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2130 lines
53 KiB
2130 lines
53 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2002 |
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* Wolfgang Denk, DENX Software Engineering, [email protected]. |
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* |
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* (C) Copyright 2002 |
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* Robert Schwebel, Pengutronix, <[email protected]> |
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* |
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* (C) Copyright 2003 |
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* Kai-Uwe Bloem, Auerswald GmbH & Co KG, <[email protected]> |
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* |
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* (C) Copyright 2005 |
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* Wolfgang Denk, DENX Software Engineering, [email protected]. |
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* |
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* Added support for reading flash partition table from environment. |
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* Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4 |
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* kernel tree. |
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* |
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* (C) Copyright 2008 |
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* Harald Welte, OpenMoko, Inc., Harald Welte <[email protected]> |
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* |
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* $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $ |
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* Copyright 2002 SYSGO Real-Time Solutions GmbH |
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*/ |
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|
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/* |
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* Three environment variables are used by the parsing routines: |
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* |
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* 'partition' - keeps current partition identifier |
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* |
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* partition := <part-id> |
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* <part-id> := <dev-id>,part_num |
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* |
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* |
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* 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping |
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* |
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* mtdids=<idmap>[,<idmap>,...] |
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* |
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* <idmap> := <dev-id>=<mtd-id> |
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* <dev-id> := 'nand'|'nor'|'onenand'<dev-num> |
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* <dev-num> := mtd device number, 0... |
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* <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) |
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* |
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* |
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* 'mtdparts' - partition list |
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* |
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* mtdparts=mtdparts=<mtd-def>[;<mtd-def>...] |
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* |
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* <mtd-def> := <mtd-id>:<part-def>[,<part-def>...] |
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* <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) |
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* <part-def> := <size>[@<offset>][<name>][<ro-flag>] |
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* <size> := standard linux memsize OR '-' to denote all remaining space |
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* <offset> := partition start offset within the device |
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* <name> := '(' NAME ')' |
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* <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel) |
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* |
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* Notes: |
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* - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping |
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* - if the above variables are not set defaults for a given target are used |
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* |
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* Examples: |
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* |
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* 1 NOR Flash, with 1 single writable partition: |
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* mtdids=nor0=edb7312-nor |
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* mtdparts=mtdparts=edb7312-nor:- |
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* |
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* 1 NOR Flash with 2 partitions, 1 NAND with one |
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* mtdids=nor0=edb7312-nor,nand0=edb7312-nand |
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* mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home) |
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* |
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*/ |
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|
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#include <common.h> |
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#include <command.h> |
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#include <malloc.h> |
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#include <jffs2/load_kernel.h> |
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#include <linux/list.h> |
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#include <linux/ctype.h> |
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#include <linux/err.h> |
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#include <linux/mtd/mtd.h> |
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|
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#if defined(CONFIG_CMD_NAND) |
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#include <linux/mtd/rawnand.h> |
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#include <nand.h> |
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#endif |
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|
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#if defined(CONFIG_CMD_ONENAND) |
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#include <linux/mtd/onenand.h> |
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#include <onenand_uboot.h> |
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#endif |
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DECLARE_GLOBAL_DATA_PTR; |
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|
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/* special size referring to all the remaining space in a partition */ |
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#define SIZE_REMAINING (~0llu) |
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|
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/* special offset value, it is used when not provided by user |
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* |
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* this value is used temporarily during parsing, later such offests |
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* are recalculated */ |
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#define OFFSET_NOT_SPECIFIED (~0llu) |
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|
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/* minimum partition size */ |
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#define MIN_PART_SIZE 4096 |
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|
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/* this flag needs to be set in part_info struct mask_flags |
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* field for read-only partitions */ |
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#define MTD_WRITEABLE_CMD 1 |
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|
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/* default values for mtdids and mtdparts variables */ |
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#if !defined(MTDIDS_DEFAULT) |
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#ifdef CONFIG_MTDIDS_DEFAULT |
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#define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT |
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#else |
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#define MTDIDS_DEFAULT NULL |
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#endif |
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#endif |
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#if !defined(MTDPARTS_DEFAULT) |
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#ifdef CONFIG_MTDPARTS_DEFAULT |
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#define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT |
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#else |
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#define MTDPARTS_DEFAULT NULL |
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#endif |
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#endif |
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#if defined(CONFIG_SYS_MTDPARTS_RUNTIME) |
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extern void board_mtdparts_default(const char **mtdids, const char **mtdparts); |
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#endif |
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static const char *mtdids_default = MTDIDS_DEFAULT; |
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static const char *mtdparts_default = MTDPARTS_DEFAULT; |
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|
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/* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */ |
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#define MTDIDS_MAXLEN 128 |
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#define MTDPARTS_MAXLEN 512 |
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#define PARTITION_MAXLEN 16 |
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static char last_ids[MTDIDS_MAXLEN + 1]; |
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static char last_parts[MTDPARTS_MAXLEN + 1]; |
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static char last_partition[PARTITION_MAXLEN + 1]; |
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|
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/* low level jffs2 cache cleaning routine */ |
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extern void jffs2_free_cache(struct part_info *part); |
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|
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/* mtdids mapping list, filled by parse_ids() */ |
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static struct list_head mtdids; |
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|
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/* device/partition list, parse_cmdline() parses into here */ |
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static struct list_head devices; |
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|
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/* current active device and partition number */ |
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struct mtd_device *current_mtd_dev = NULL; |
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u8 current_mtd_partnum = 0; |
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u8 use_defaults; |
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static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num); |
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|
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/* command line only routines */ |
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static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len); |
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static int device_del(struct mtd_device *dev); |
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|
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/** |
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* Parses a string into a number. The number stored at ptr is |
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* potentially suffixed with K (for kilobytes, or 1024 bytes), |
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* M (for megabytes, or 1048576 bytes), or G (for gigabytes, or |
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* 1073741824). If the number is suffixed with K, M, or G, then |
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* the return value is the number multiplied by one kilobyte, one |
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* megabyte, or one gigabyte, respectively. |
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* |
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* @param ptr where parse begins |
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* @param retptr output pointer to next char after parse completes (output) |
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* @return resulting unsigned int |
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*/ |
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static u64 memsize_parse (const char *const ptr, const char **retptr) |
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{ |
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u64 ret = simple_strtoull(ptr, (char **)retptr, 0); |
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|
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switch (**retptr) { |
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case 'G': |
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case 'g': |
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ret <<= 10; |
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case 'M': |
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case 'm': |
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ret <<= 10; |
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case 'K': |
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case 'k': |
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ret <<= 10; |
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(*retptr)++; |
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default: |
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break; |
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} |
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|
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return ret; |
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} |
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|
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/** |
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* Format string describing supplied size. This routine does the opposite job |
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* to memsize_parse(). Size in bytes is converted to string and if possible |
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* shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix. |
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* |
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* Note, that this routine does not check for buffer overflow, it's the caller |
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* who must assure enough space. |
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* |
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* @param buf output buffer |
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* @param size size to be converted to string |
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*/ |
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static void memsize_format(char *buf, u64 size) |
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{ |
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#define SIZE_GB ((u32)1024*1024*1024) |
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#define SIZE_MB ((u32)1024*1024) |
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#define SIZE_KB ((u32)1024) |
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|
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if ((size % SIZE_GB) == 0) |
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sprintf(buf, "%llug", size/SIZE_GB); |
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else if ((size % SIZE_MB) == 0) |
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sprintf(buf, "%llum", size/SIZE_MB); |
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else if (size % SIZE_KB == 0) |
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sprintf(buf, "%lluk", size/SIZE_KB); |
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else |
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sprintf(buf, "%llu", size); |
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} |
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|
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/** |
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* This routine does global indexing of all partitions. Resulting index for |
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* current partition is saved in 'mtddevnum'. Current partition name in |
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* 'mtddevname'. |
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*/ |
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static void index_partitions(void) |
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{ |
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u16 mtddevnum; |
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struct part_info *part; |
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struct list_head *dentry; |
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struct mtd_device *dev; |
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|
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debug("--- index partitions ---\n"); |
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|
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if (current_mtd_dev) { |
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mtddevnum = 0; |
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list_for_each(dentry, &devices) { |
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dev = list_entry(dentry, struct mtd_device, link); |
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if (dev == current_mtd_dev) { |
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mtddevnum += current_mtd_partnum; |
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env_set_ulong("mtddevnum", mtddevnum); |
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debug("=> mtddevnum %d,\n", mtddevnum); |
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break; |
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} |
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mtddevnum += dev->num_parts; |
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} |
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part = mtd_part_info(current_mtd_dev, current_mtd_partnum); |
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if (part) { |
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env_set("mtddevname", part->name); |
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debug("=> mtddevname %s\n", part->name); |
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} else { |
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env_set("mtddevname", NULL); |
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debug("=> mtddevname NULL\n"); |
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} |
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} else { |
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env_set("mtddevnum", NULL); |
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env_set("mtddevname", NULL); |
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debug("=> mtddevnum NULL\n=> mtddevname NULL\n"); |
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} |
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} |
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/** |
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* Save current device and partition in environment variable 'partition'. |
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*/ |
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static void current_save(void) |
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{ |
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char buf[16]; |
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debug("--- current_save ---\n"); |
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if (current_mtd_dev) { |
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sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type), |
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current_mtd_dev->id->num, current_mtd_partnum); |
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env_set("partition", buf); |
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strncpy(last_partition, buf, 16); |
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debug("=> partition %s\n", buf); |
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} else { |
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env_set("partition", NULL); |
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last_partition[0] = '\0'; |
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debug("=> partition NULL\n"); |
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} |
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index_partitions(); |
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} |
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|
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/** |
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* Produce a mtd_info given a type and num. |
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* |
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* @param type mtd type |
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* @param num mtd number |
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* @param mtd a pointer to an mtd_info instance (output) |
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* @return 0 if device is valid, 1 otherwise |
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*/ |
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static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd) |
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{ |
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char mtd_dev[16]; |
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sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num); |
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*mtd = get_mtd_device_nm(mtd_dev); |
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if (IS_ERR(*mtd)) { |
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printf("Device %s not found!\n", mtd_dev); |
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return 1; |
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} |
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put_mtd_device(*mtd); |
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return 0; |
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} |
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/** |
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* Performs sanity check for supplied flash partition. |
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* Table of existing MTD flash devices is searched and partition device |
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* is located. Alignment with the granularity of nand erasesize is verified. |
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* |
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* @param id of the parent device |
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* @param part partition to validate |
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* @return 0 if partition is valid, 1 otherwise |
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*/ |
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static int part_validate_eraseblock(struct mtdids *id, struct part_info *part) |
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{ |
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struct mtd_info *mtd = NULL; |
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int i, j; |
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ulong start; |
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u64 offset, size; |
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if (get_mtd_info(id->type, id->num, &mtd)) |
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return 1; |
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part->sector_size = mtd->erasesize; |
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if (!mtd->numeraseregions) { |
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/* |
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* Only one eraseregion (NAND, OneNAND or uniform NOR), |
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* checking for alignment is easy here |
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*/ |
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offset = part->offset; |
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if (do_div(offset, mtd->erasesize)) { |
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printf("%s%d: partition (%s) start offset" |
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"alignment incorrect\n", |
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MTD_DEV_TYPE(id->type), id->num, part->name); |
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return 1; |
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} |
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size = part->size; |
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if (do_div(size, mtd->erasesize)) { |
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printf("%s%d: partition (%s) size alignment incorrect\n", |
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MTD_DEV_TYPE(id->type), id->num, part->name); |
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return 1; |
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} |
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} else { |
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/* |
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* Multiple eraseregions (non-uniform NOR), |
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* checking for alignment is more complex here |
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*/ |
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|
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/* Check start alignment */ |
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for (i = 0; i < mtd->numeraseregions; i++) { |
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start = mtd->eraseregions[i].offset; |
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for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { |
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if (part->offset == start) |
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goto start_ok; |
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start += mtd->eraseregions[i].erasesize; |
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} |
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} |
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printf("%s%d: partition (%s) start offset alignment incorrect\n", |
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MTD_DEV_TYPE(id->type), id->num, part->name); |
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return 1; |
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|
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start_ok: |
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|
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/* Check end/size alignment */ |
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for (i = 0; i < mtd->numeraseregions; i++) { |
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start = mtd->eraseregions[i].offset; |
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for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { |
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if ((part->offset + part->size) == start) |
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goto end_ok; |
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start += mtd->eraseregions[i].erasesize; |
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} |
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} |
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/* Check last sector alignment */ |
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if ((part->offset + part->size) == start) |
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goto end_ok; |
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printf("%s%d: partition (%s) size alignment incorrect\n", |
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MTD_DEV_TYPE(id->type), id->num, part->name); |
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return 1; |
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|
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end_ok: |
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return 0; |
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} |
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|
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return 0; |
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} |
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|
|
|
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/** |
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* Performs sanity check for supplied partition. Offset and size are |
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* verified to be within valid range. Partition type is checked and |
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* part_validate_eraseblock() is called with the argument of part. |
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* |
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* @param id of the parent device |
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* @param part partition to validate |
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* @return 0 if partition is valid, 1 otherwise |
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*/ |
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static int part_validate(struct mtdids *id, struct part_info *part) |
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{ |
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if (part->size == SIZE_REMAINING) |
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part->size = id->size - part->offset; |
|
|
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if (part->offset > id->size) { |
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printf("%s: offset %08llx beyond flash size %08llx\n", |
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id->mtd_id, part->offset, id->size); |
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return 1; |
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} |
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|
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if ((part->offset + part->size) <= part->offset) { |
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printf("%s%d: partition (%s) size too big\n", |
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MTD_DEV_TYPE(id->type), id->num, part->name); |
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return 1; |
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} |
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|
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if (part->offset + part->size > id->size) { |
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printf("%s: partitioning exceeds flash size\n", id->mtd_id); |
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return 1; |
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} |
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|
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/* |
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* Now we need to check if the partition starts and ends on |
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* sector (eraseblock) regions |
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*/ |
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return part_validate_eraseblock(id, part); |
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} |
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|
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/** |
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* Delete selected partition from the partition list of the specified device. |
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* |
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* @param dev device to delete partition from |
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* @param part partition to delete |
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* @return 0 on success, 1 otherwise |
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*/ |
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static int part_del(struct mtd_device *dev, struct part_info *part) |
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{ |
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u8 current_save_needed = 0; |
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|
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/* if there is only one partition, remove whole device */ |
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if (dev->num_parts == 1) |
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return device_del(dev); |
|
|
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/* otherwise just delete this partition */ |
|
|
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if (dev == current_mtd_dev) { |
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/* we are modyfing partitions for the current device, |
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* update current */ |
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struct part_info *curr_pi; |
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curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum); |
|
|
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if (curr_pi) { |
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if (curr_pi == part) { |
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printf("current partition deleted, resetting current to 0\n"); |
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current_mtd_partnum = 0; |
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} else if (part->offset <= curr_pi->offset) { |
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current_mtd_partnum--; |
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} |
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current_save_needed = 1; |
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} |
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} |
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|
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list_del(&part->link); |
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free(part); |
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dev->num_parts--; |
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|
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if (current_save_needed > 0) |
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current_save(); |
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else |
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index_partitions(); |
|
|
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return 0; |
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} |
|
|
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/** |
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* Delete all partitions from parts head list, free memory. |
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* |
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* @param head list of partitions to delete |
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*/ |
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static void part_delall(struct list_head *head) |
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{ |
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struct list_head *entry, *n; |
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struct part_info *part_tmp; |
|
|
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/* clean tmp_list and free allocated memory */ |
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list_for_each_safe(entry, n, head) { |
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part_tmp = list_entry(entry, struct part_info, link); |
|
|
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list_del(entry); |
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free(part_tmp); |
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} |
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} |
|
|
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/** |
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* Add new partition to the supplied partition list. Make sure partitions are |
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* sorted by offset in ascending order. |
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* |
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* @param head list this partition is to be added to |
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* @param new partition to be added |
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*/ |
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static int part_sort_add(struct mtd_device *dev, struct part_info *part) |
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{ |
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struct list_head *entry; |
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struct part_info *new_pi, *curr_pi; |
|
|
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/* link partition to parrent dev */ |
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part->dev = dev; |
|
|
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if (list_empty(&dev->parts)) { |
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debug("part_sort_add: list empty\n"); |
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list_add(&part->link, &dev->parts); |
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dev->num_parts++; |
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index_partitions(); |
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return 0; |
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} |
|
|
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new_pi = list_entry(&part->link, struct part_info, link); |
|
|
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/* get current partition info if we are updating current device */ |
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curr_pi = NULL; |
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if (dev == current_mtd_dev) |
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curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum); |
|
|
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list_for_each(entry, &dev->parts) { |
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struct part_info *pi; |
|
|
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pi = list_entry(entry, struct part_info, link); |
|
|
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/* be compliant with kernel cmdline, allow only one partition at offset zero */ |
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if ((new_pi->offset == pi->offset) && (pi->offset == 0)) { |
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printf("cannot add second partition at offset 0\n"); |
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return 1; |
|
} |
|
|
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if (new_pi->offset <= pi->offset) { |
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list_add_tail(&part->link, entry); |
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dev->num_parts++; |
|
|
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if (curr_pi && (pi->offset <= curr_pi->offset)) { |
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/* we are modyfing partitions for the current |
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* device, update current */ |
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current_mtd_partnum++; |
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current_save(); |
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} else { |
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index_partitions(); |
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} |
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return 0; |
|
} |
|
} |
|
|
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list_add_tail(&part->link, &dev->parts); |
|
dev->num_parts++; |
|
index_partitions(); |
|
return 0; |
|
} |
|
|
|
/** |
|
* Add provided partition to the partition list of a given device. |
|
* |
|
* @param dev device to which partition is added |
|
* @param part partition to be added |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int part_add(struct mtd_device *dev, struct part_info *part) |
|
{ |
|
/* verify alignment and size */ |
|
if (part_validate(dev->id, part) != 0) |
|
return 1; |
|
|
|
/* partition is ok, add it to the list */ |
|
if (part_sort_add(dev, part) != 0) |
|
return 1; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Parse one partition definition, allocate memory and return pointer to this |
|
* location in retpart. |
|
* |
|
* @param partdef pointer to the partition definition string i.e. <part-def> |
|
* @param ret output pointer to next char after parse completes (output) |
|
* @param retpart pointer to the allocated partition (output) |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart) |
|
{ |
|
struct part_info *part; |
|
u64 size; |
|
u64 offset; |
|
const char *name; |
|
int name_len; |
|
unsigned int mask_flags; |
|
const char *p; |
|
|
|
p = partdef; |
|
*retpart = NULL; |
|
*ret = NULL; |
|
|
|
/* fetch the partition size */ |
|
if (*p == '-') { |
|
/* assign all remaining space to this partition */ |
|
debug("'-': remaining size assigned\n"); |
|
size = SIZE_REMAINING; |
|
p++; |
|
} else { |
|
size = memsize_parse(p, &p); |
|
if (size < MIN_PART_SIZE) { |
|
printf("partition size too small (%llx)\n", size); |
|
return 1; |
|
} |
|
} |
|
|
|
/* check for offset */ |
|
offset = OFFSET_NOT_SPECIFIED; |
|
if (*p == '@') { |
|
p++; |
|
offset = memsize_parse(p, &p); |
|
} |
|
|
|
/* now look for the name */ |
|
if (*p == '(') { |
|
name = ++p; |
|
if ((p = strchr(name, ')')) == NULL) { |
|
printf("no closing ) found in partition name\n"); |
|
return 1; |
|
} |
|
name_len = p - name + 1; |
|
if ((name_len - 1) == 0) { |
|
printf("empty partition name\n"); |
|
return 1; |
|
} |
|
p++; |
|
} else { |
|
/* 0x00000000@0x00000000 */ |
|
name_len = 22; |
|
name = NULL; |
|
} |
|
|
|
/* test for options */ |
|
mask_flags = 0; |
|
if (strncmp(p, "ro", 2) == 0) { |
|
mask_flags |= MTD_WRITEABLE_CMD; |
|
p += 2; |
|
} |
|
|
|
/* check for next partition definition */ |
|
if (*p == ',') { |
|
if (size == SIZE_REMAINING) { |
|
*ret = NULL; |
|
printf("no partitions allowed after a fill-up partition\n"); |
|
return 1; |
|
} |
|
*ret = ++p; |
|
} else if ((*p == ';') || (*p == '\0')) { |
|
*ret = p; |
|
} else { |
|
printf("unexpected character '%c' at the end of partition\n", *p); |
|
*ret = NULL; |
|
return 1; |
|
} |
|
|
|
/* allocate memory */ |
|
part = (struct part_info *)malloc(sizeof(struct part_info) + name_len); |
|
if (!part) { |
|
printf("out of memory\n"); |
|
return 1; |
|
} |
|
memset(part, 0, sizeof(struct part_info) + name_len); |
|
part->size = size; |
|
part->offset = offset; |
|
part->mask_flags = mask_flags; |
|
part->name = (char *)(part + 1); |
|
|
|
if (name) { |
|
/* copy user provided name */ |
|
strncpy(part->name, name, name_len - 1); |
|
part->auto_name = 0; |
|
} else { |
|
/* auto generated name in form of size@offset */ |
|
snprintf(part->name, name_len, "0x%08llx@0x%08llx", size, offset); |
|
part->auto_name = 1; |
|
} |
|
|
|
part->name[name_len - 1] = '\0'; |
|
INIT_LIST_HEAD(&part->link); |
|
|
|
debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n", |
|
part->name, part->size, |
|
part->offset, part->mask_flags); |
|
|
|
*retpart = part; |
|
return 0; |
|
} |
|
|
|
/** |
|
* Check device number to be within valid range for given device type. |
|
* |
|
* @param type mtd type |
|
* @param num mtd number |
|
* @param size a pointer to the size of the mtd device (output) |
|
* @return 0 if device is valid, 1 otherwise |
|
*/ |
|
static int mtd_device_validate(u8 type, u8 num, u64 *size) |
|
{ |
|
struct mtd_info *mtd = NULL; |
|
|
|
if (get_mtd_info(type, num, &mtd)) |
|
return 1; |
|
|
|
*size = mtd->size; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Delete all mtd devices from a supplied devices list, free memory allocated for |
|
* each device and delete all device partitions. |
|
* |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int device_delall(struct list_head *head) |
|
{ |
|
struct list_head *entry, *n; |
|
struct mtd_device *dev_tmp; |
|
|
|
/* clean devices list */ |
|
list_for_each_safe(entry, n, head) { |
|
dev_tmp = list_entry(entry, struct mtd_device, link); |
|
list_del(entry); |
|
part_delall(&dev_tmp->parts); |
|
free(dev_tmp); |
|
} |
|
INIT_LIST_HEAD(&devices); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* If provided device exists it's partitions are deleted, device is removed |
|
* from device list and device memory is freed. |
|
* |
|
* @param dev device to be deleted |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int device_del(struct mtd_device *dev) |
|
{ |
|
part_delall(&dev->parts); |
|
list_del(&dev->link); |
|
free(dev); |
|
|
|
if (dev == current_mtd_dev) { |
|
/* we just deleted current device */ |
|
if (list_empty(&devices)) { |
|
current_mtd_dev = NULL; |
|
} else { |
|
/* reset first partition from first dev from the |
|
* devices list as current */ |
|
current_mtd_dev = list_entry(devices.next, struct mtd_device, link); |
|
current_mtd_partnum = 0; |
|
} |
|
current_save(); |
|
return 0; |
|
} |
|
|
|
index_partitions(); |
|
return 0; |
|
} |
|
|
|
/** |
|
* Search global device list and return pointer to the device of type and num |
|
* specified. |
|
* |
|
* @param type device type |
|
* @param num device number |
|
* @return NULL if requested device does not exist |
|
*/ |
|
struct mtd_device *device_find(u8 type, u8 num) |
|
{ |
|
struct list_head *entry; |
|
struct mtd_device *dev_tmp; |
|
|
|
list_for_each(entry, &devices) { |
|
dev_tmp = list_entry(entry, struct mtd_device, link); |
|
|
|
if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num)) |
|
return dev_tmp; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/** |
|
* Add specified device to the global device list. |
|
* |
|
* @param dev device to be added |
|
*/ |
|
static void device_add(struct mtd_device *dev) |
|
{ |
|
u8 current_save_needed = 0; |
|
|
|
if (list_empty(&devices)) { |
|
current_mtd_dev = dev; |
|
current_mtd_partnum = 0; |
|
current_save_needed = 1; |
|
} |
|
|
|
list_add_tail(&dev->link, &devices); |
|
|
|
if (current_save_needed > 0) |
|
current_save(); |
|
else |
|
index_partitions(); |
|
} |
|
|
|
/** |
|
* Parse device type, name and mtd-id. If syntax is ok allocate memory and |
|
* return pointer to the device structure. |
|
* |
|
* @param mtd_dev pointer to the device definition string i.e. <mtd-dev> |
|
* @param ret output pointer to next char after parse completes (output) |
|
* @param retdev pointer to the allocated device (output) |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev) |
|
{ |
|
struct mtd_device *dev; |
|
struct part_info *part; |
|
struct mtdids *id; |
|
const char *mtd_id; |
|
unsigned int mtd_id_len; |
|
const char *p; |
|
const char *pend; |
|
LIST_HEAD(tmp_list); |
|
struct list_head *entry, *n; |
|
u16 num_parts; |
|
u64 offset; |
|
int err = 1; |
|
|
|
debug("===device_parse===\n"); |
|
|
|
assert(retdev); |
|
*retdev = NULL; |
|
|
|
if (ret) |
|
*ret = NULL; |
|
|
|
/* fetch <mtd-id> */ |
|
mtd_id = p = mtd_dev; |
|
if (!(p = strchr(mtd_id, ':'))) { |
|
printf("no <mtd-id> identifier\n"); |
|
return 1; |
|
} |
|
mtd_id_len = p - mtd_id + 1; |
|
p++; |
|
|
|
/* verify if we have a valid device specified */ |
|
if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) { |
|
printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id); |
|
return 1; |
|
} |
|
|
|
pend = strchr(p, ';'); |
|
debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n", |
|
id->type, MTD_DEV_TYPE(id->type), |
|
id->num, id->mtd_id); |
|
debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p); |
|
|
|
/* parse partitions */ |
|
num_parts = 0; |
|
|
|
offset = 0; |
|
if ((dev = device_find(id->type, id->num)) != NULL) { |
|
/* if device already exists start at the end of the last partition */ |
|
part = list_entry(dev->parts.prev, struct part_info, link); |
|
offset = part->offset + part->size; |
|
} |
|
|
|
while (p && (*p != '\0') && (*p != ';')) { |
|
err = 1; |
|
if ((part_parse(p, &p, &part) != 0) || (!part)) |
|
break; |
|
|
|
/* calculate offset when not specified */ |
|
if (part->offset == OFFSET_NOT_SPECIFIED) |
|
part->offset = offset; |
|
else |
|
offset = part->offset; |
|
|
|
/* verify alignment and size */ |
|
if (part_validate(id, part) != 0) |
|
break; |
|
|
|
offset += part->size; |
|
|
|
/* partition is ok, add it to the list */ |
|
list_add_tail(&part->link, &tmp_list); |
|
num_parts++; |
|
err = 0; |
|
} |
|
if (err == 1) { |
|
part_delall(&tmp_list); |
|
return 1; |
|
} |
|
|
|
debug("\ntotal partitions: %d\n", num_parts); |
|
|
|
/* check for next device presence */ |
|
if (p) { |
|
if (*p == ';') { |
|
if (ret) |
|
*ret = ++p; |
|
} else if (*p == '\0') { |
|
if (ret) |
|
*ret = p; |
|
} else { |
|
printf("unexpected character '%c' at the end of device\n", *p); |
|
if (ret) |
|
*ret = NULL; |
|
return 1; |
|
} |
|
} |
|
|
|
/* allocate memory for mtd_device structure */ |
|
if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) { |
|
printf("out of memory\n"); |
|
return 1; |
|
} |
|
memset(dev, 0, sizeof(struct mtd_device)); |
|
dev->id = id; |
|
dev->num_parts = 0; /* part_sort_add increments num_parts */ |
|
INIT_LIST_HEAD(&dev->parts); |
|
INIT_LIST_HEAD(&dev->link); |
|
|
|
/* move partitions from tmp_list to dev->parts */ |
|
list_for_each_safe(entry, n, &tmp_list) { |
|
part = list_entry(entry, struct part_info, link); |
|
list_del(entry); |
|
if (part_sort_add(dev, part) != 0) { |
|
device_del(dev); |
|
return 1; |
|
} |
|
} |
|
|
|
*retdev = dev; |
|
|
|
debug("===\n\n"); |
|
return 0; |
|
} |
|
|
|
/** |
|
* Initialize global device list. |
|
* |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int mtd_devices_init(void) |
|
{ |
|
last_parts[0] = '\0'; |
|
current_mtd_dev = NULL; |
|
current_save(); |
|
|
|
return device_delall(&devices); |
|
} |
|
|
|
/* |
|
* Search global mtdids list and find id of requested type and number. |
|
* |
|
* @return pointer to the id if it exists, NULL otherwise |
|
*/ |
|
static struct mtdids* id_find(u8 type, u8 num) |
|
{ |
|
struct list_head *entry; |
|
struct mtdids *id; |
|
|
|
list_for_each(entry, &mtdids) { |
|
id = list_entry(entry, struct mtdids, link); |
|
|
|
if ((id->type == type) && (id->num == num)) |
|
return id; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/** |
|
* Search global mtdids list and find id of a requested mtd_id. |
|
* |
|
* Note: first argument is not null terminated. |
|
* |
|
* @param mtd_id string containing requested mtd_id |
|
* @param mtd_id_len length of supplied mtd_id |
|
* @return pointer to the id if it exists, NULL otherwise |
|
*/ |
|
static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len) |
|
{ |
|
struct list_head *entry; |
|
struct mtdids *id; |
|
|
|
debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n", |
|
mtd_id_len, mtd_id, mtd_id_len); |
|
|
|
list_for_each(entry, &mtdids) { |
|
id = list_entry(entry, struct mtdids, link); |
|
|
|
debug("entry: '%s' (len = %zu)\n", |
|
id->mtd_id, strlen(id->mtd_id)); |
|
|
|
if (mtd_id_len != strlen(id->mtd_id)) |
|
continue; |
|
if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0) |
|
return id; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/** |
|
* Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>, |
|
* return device type and number. |
|
* |
|
* @param id string describing device id |
|
* @param ret_id output pointer to next char after parse completes (output) |
|
* @param dev_type parsed device type (output) |
|
* @param dev_num parsed device number (output) |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, |
|
u8 *dev_num) |
|
{ |
|
const char *p = id; |
|
|
|
*dev_type = 0; |
|
if (strncmp(p, "nand", 4) == 0) { |
|
*dev_type = MTD_DEV_TYPE_NAND; |
|
p += 4; |
|
} else if (strncmp(p, "nor", 3) == 0) { |
|
*dev_type = MTD_DEV_TYPE_NOR; |
|
p += 3; |
|
} else if (strncmp(p, "onenand", 7) == 0) { |
|
*dev_type = MTD_DEV_TYPE_ONENAND; |
|
p += 7; |
|
} else { |
|
printf("incorrect device type in %s\n", id); |
|
return 1; |
|
} |
|
|
|
if (!isdigit(*p)) { |
|
printf("incorrect device number in %s\n", id); |
|
return 1; |
|
} |
|
|
|
*dev_num = simple_strtoul(p, (char **)&p, 0); |
|
if (ret_id) |
|
*ret_id = p; |
|
return 0; |
|
} |
|
|
|
/** |
|
* Process all devices and generate corresponding mtdparts string describing |
|
* all partitions on all devices. |
|
* |
|
* @param buf output buffer holding generated mtdparts string (output) |
|
* @param buflen buffer size |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int generate_mtdparts(char *buf, u32 buflen) |
|
{ |
|
struct list_head *pentry, *dentry; |
|
struct mtd_device *dev; |
|
struct part_info *part, *prev_part; |
|
char *p = buf; |
|
char tmpbuf[32]; |
|
u64 size, offset; |
|
u32 len, part_cnt; |
|
u32 maxlen = buflen - 1; |
|
|
|
debug("--- generate_mtdparts ---\n"); |
|
|
|
if (list_empty(&devices)) { |
|
buf[0] = '\0'; |
|
return 0; |
|
} |
|
|
|
strcpy(p, "mtdparts="); |
|
p += 9; |
|
|
|
list_for_each(dentry, &devices) { |
|
dev = list_entry(dentry, struct mtd_device, link); |
|
|
|
/* copy mtd_id */ |
|
len = strlen(dev->id->mtd_id) + 1; |
|
if (len > maxlen) |
|
goto cleanup; |
|
memcpy(p, dev->id->mtd_id, len - 1); |
|
p += len - 1; |
|
*(p++) = ':'; |
|
maxlen -= len; |
|
|
|
/* format partitions */ |
|
prev_part = NULL; |
|
part_cnt = 0; |
|
list_for_each(pentry, &dev->parts) { |
|
part = list_entry(pentry, struct part_info, link); |
|
size = part->size; |
|
offset = part->offset; |
|
part_cnt++; |
|
|
|
/* partition size */ |
|
memsize_format(tmpbuf, size); |
|
len = strlen(tmpbuf); |
|
if (len > maxlen) |
|
goto cleanup; |
|
memcpy(p, tmpbuf, len); |
|
p += len; |
|
maxlen -= len; |
|
|
|
|
|
/* add offset only when there is a gap between |
|
* partitions */ |
|
if ((!prev_part && (offset != 0)) || |
|
(prev_part && ((prev_part->offset + prev_part->size) != part->offset))) { |
|
|
|
memsize_format(tmpbuf, offset); |
|
len = strlen(tmpbuf) + 1; |
|
if (len > maxlen) |
|
goto cleanup; |
|
*(p++) = '@'; |
|
memcpy(p, tmpbuf, len - 1); |
|
p += len - 1; |
|
maxlen -= len; |
|
} |
|
|
|
/* copy name only if user supplied */ |
|
if(!part->auto_name) { |
|
len = strlen(part->name) + 2; |
|
if (len > maxlen) |
|
goto cleanup; |
|
|
|
*(p++) = '('; |
|
memcpy(p, part->name, len - 2); |
|
p += len - 2; |
|
*(p++) = ')'; |
|
maxlen -= len; |
|
} |
|
|
|
/* ro mask flag */ |
|
if (part->mask_flags && MTD_WRITEABLE_CMD) { |
|
len = 2; |
|
if (len > maxlen) |
|
goto cleanup; |
|
*(p++) = 'r'; |
|
*(p++) = 'o'; |
|
maxlen -= 2; |
|
} |
|
|
|
/* print ',' separator if there are other partitions |
|
* following */ |
|
if (dev->num_parts > part_cnt) { |
|
if (1 > maxlen) |
|
goto cleanup; |
|
*(p++) = ','; |
|
maxlen--; |
|
} |
|
prev_part = part; |
|
} |
|
/* print ';' separator if there are other devices following */ |
|
if (dentry->next != &devices) { |
|
if (1 > maxlen) |
|
goto cleanup; |
|
*(p++) = ';'; |
|
maxlen--; |
|
} |
|
} |
|
|
|
/* we still have at least one char left, as we decremented maxlen at |
|
* the begining */ |
|
*p = '\0'; |
|
|
|
return 0; |
|
|
|
cleanup: |
|
last_parts[0] = '\0'; |
|
return 1; |
|
} |
|
|
|
/** |
|
* Call generate_mtdparts to process all devices and generate corresponding |
|
* mtdparts string, save it in mtdparts environment variable. |
|
* |
|
* @param buf output buffer holding generated mtdparts string (output) |
|
* @param buflen buffer size |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int generate_mtdparts_save(char *buf, u32 buflen) |
|
{ |
|
int ret; |
|
|
|
ret = generate_mtdparts(buf, buflen); |
|
|
|
if ((buf[0] != '\0') && (ret == 0)) |
|
env_set("mtdparts", buf); |
|
else |
|
env_set("mtdparts", NULL); |
|
|
|
return ret; |
|
} |
|
|
|
#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) |
|
/** |
|
* Get the net size (w/o bad blocks) of the given partition. |
|
* |
|
* @param mtd the mtd info |
|
* @param part the partition |
|
* @return the calculated net size of this partition |
|
*/ |
|
static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part) |
|
{ |
|
uint64_t i, net_size = 0; |
|
|
|
if (!mtd->block_isbad) |
|
return part->size; |
|
|
|
for (i = 0; i < part->size; i += mtd->erasesize) { |
|
if (!mtd->block_isbad(mtd, part->offset + i)) |
|
net_size += mtd->erasesize; |
|
} |
|
|
|
return net_size; |
|
} |
|
#endif |
|
|
|
static void print_partition_table(void) |
|
{ |
|
struct list_head *dentry, *pentry; |
|
struct part_info *part; |
|
struct mtd_device *dev; |
|
int part_num; |
|
|
|
list_for_each(dentry, &devices) { |
|
dev = list_entry(dentry, struct mtd_device, link); |
|
/* list partitions for given device */ |
|
part_num = 0; |
|
#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) |
|
struct mtd_info *mtd; |
|
|
|
if (get_mtd_info(dev->id->type, dev->id->num, &mtd)) |
|
return; |
|
|
|
printf("\ndevice %s%d <%s>, # parts = %d\n", |
|
MTD_DEV_TYPE(dev->id->type), dev->id->num, |
|
dev->id->mtd_id, dev->num_parts); |
|
printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n"); |
|
|
|
list_for_each(pentry, &dev->parts) { |
|
u32 net_size; |
|
char *size_note; |
|
|
|
part = list_entry(pentry, struct part_info, link); |
|
net_size = net_part_size(mtd, part); |
|
size_note = part->size == net_size ? " " : " (!)"; |
|
printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n", |
|
part_num, part->name, part->size, |
|
net_size, size_note, part->offset, |
|
part->mask_flags); |
|
#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */ |
|
printf("\ndevice %s%d <%s>, # parts = %d\n", |
|
MTD_DEV_TYPE(dev->id->type), dev->id->num, |
|
dev->id->mtd_id, dev->num_parts); |
|
printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n"); |
|
|
|
list_for_each(pentry, &dev->parts) { |
|
part = list_entry(pentry, struct part_info, link); |
|
printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", |
|
part_num, part->name, part->size, |
|
part->offset, part->mask_flags); |
|
#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */ |
|
part_num++; |
|
} |
|
} |
|
|
|
if (list_empty(&devices)) |
|
printf("no partitions defined\n"); |
|
} |
|
|
|
/** |
|
* Format and print out a partition list for each device from global device |
|
* list. |
|
*/ |
|
static void list_partitions(void) |
|
{ |
|
struct part_info *part; |
|
|
|
debug("\n---list_partitions---\n"); |
|
print_partition_table(); |
|
|
|
/* current_mtd_dev is not NULL only when we have non empty device list */ |
|
if (current_mtd_dev) { |
|
part = mtd_part_info(current_mtd_dev, current_mtd_partnum); |
|
if (part) { |
|
printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n", |
|
MTD_DEV_TYPE(current_mtd_dev->id->type), |
|
current_mtd_dev->id->num, current_mtd_partnum, |
|
part->name, part->size, part->offset); |
|
} else { |
|
printf("could not get current partition info\n\n"); |
|
} |
|
} |
|
|
|
printf("\ndefaults:\n"); |
|
printf("mtdids : %s\n", |
|
mtdids_default ? mtdids_default : "none"); |
|
/* |
|
* Using printf() here results in printbuffer overflow |
|
* if default mtdparts string is greater than console |
|
* printbuffer. Use puts() to prevent system crashes. |
|
*/ |
|
puts("mtdparts: "); |
|
puts(mtdparts_default ? mtdparts_default : "none"); |
|
puts("\n"); |
|
} |
|
|
|
/** |
|
* Given partition identifier in form of <dev_type><dev_num>,<part_num> find |
|
* corresponding device and verify partition number. |
|
* |
|
* @param id string describing device and partition or partition name |
|
* @param dev pointer to the requested device (output) |
|
* @param part_num verified partition number (output) |
|
* @param part pointer to requested partition (output) |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
int find_dev_and_part(const char *id, struct mtd_device **dev, |
|
u8 *part_num, struct part_info **part) |
|
{ |
|
struct list_head *dentry, *pentry; |
|
u8 type, dnum, pnum; |
|
const char *p; |
|
|
|
debug("--- find_dev_and_part ---\nid = %s\n", id); |
|
|
|
list_for_each(dentry, &devices) { |
|
*part_num = 0; |
|
*dev = list_entry(dentry, struct mtd_device, link); |
|
list_for_each(pentry, &(*dev)->parts) { |
|
*part = list_entry(pentry, struct part_info, link); |
|
if (strcmp((*part)->name, id) == 0) |
|
return 0; |
|
(*part_num)++; |
|
} |
|
} |
|
|
|
p = id; |
|
*dev = NULL; |
|
*part = NULL; |
|
*part_num = 0; |
|
|
|
if (mtd_id_parse(p, &p, &type, &dnum) != 0) |
|
return 1; |
|
|
|
if ((*p++ != ',') || (*p == '\0')) { |
|
printf("no partition number specified\n"); |
|
return 1; |
|
} |
|
pnum = simple_strtoul(p, (char **)&p, 0); |
|
if (*p != '\0') { |
|
printf("unexpected trailing character '%c'\n", *p); |
|
return 1; |
|
} |
|
|
|
if ((*dev = device_find(type, dnum)) == NULL) { |
|
printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum); |
|
return 1; |
|
} |
|
|
|
if ((*part = mtd_part_info(*dev, pnum)) == NULL) { |
|
printf("no such partition\n"); |
|
*dev = NULL; |
|
return 1; |
|
} |
|
|
|
*part_num = pnum; |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Find and delete partition. For partition id format see find_dev_and_part(). |
|
* |
|
* @param id string describing device and partition |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int delete_partition(const char *id) |
|
{ |
|
u8 pnum; |
|
struct mtd_device *dev; |
|
struct part_info *part; |
|
|
|
if (find_dev_and_part(id, &dev, &pnum, &part) == 0) { |
|
|
|
debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n", |
|
MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum, |
|
part->name, part->size, part->offset); |
|
|
|
if (part_del(dev, part) != 0) |
|
return 1; |
|
|
|
if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) { |
|
printf("generated mtdparts too long, resetting to null\n"); |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
|
|
printf("partition %s not found\n", id); |
|
return 1; |
|
} |
|
|
|
#if defined(CONFIG_CMD_MTDPARTS_SPREAD) |
|
/** |
|
* Increase the size of the given partition so that it's net size is at least |
|
* as large as the size member and such that the next partition would start on a |
|
* good block if it were adjacent to this partition. |
|
* |
|
* @param mtd the mtd device |
|
* @param part the partition |
|
* @param next_offset pointer to the offset of the next partition after this |
|
* partition's size has been modified (output) |
|
*/ |
|
static void spread_partition(struct mtd_info *mtd, struct part_info *part, |
|
uint64_t *next_offset) |
|
{ |
|
uint64_t net_size, padding_size = 0; |
|
int truncated; |
|
|
|
mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size, |
|
&truncated); |
|
|
|
/* |
|
* Absorb bad blocks immediately following this |
|
* partition also into the partition, such that |
|
* the next partition starts with a good block. |
|
*/ |
|
if (!truncated) { |
|
mtd_get_len_incl_bad(mtd, part->offset + net_size, |
|
mtd->erasesize, &padding_size, &truncated); |
|
if (truncated) |
|
padding_size = 0; |
|
else |
|
padding_size -= mtd->erasesize; |
|
} |
|
|
|
if (truncated) { |
|
printf("truncated partition %s to %lld bytes\n", part->name, |
|
(uint64_t) net_size + padding_size); |
|
} |
|
|
|
part->size = net_size + padding_size; |
|
*next_offset = part->offset + part->size; |
|
} |
|
|
|
/** |
|
* Adjust all of the partition sizes, such that all partitions are at least |
|
* as big as their mtdparts environment variable sizes and they each start |
|
* on a good block. |
|
* |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int spread_partitions(void) |
|
{ |
|
struct list_head *dentry, *pentry; |
|
struct mtd_device *dev; |
|
struct part_info *part; |
|
struct mtd_info *mtd; |
|
int part_num; |
|
uint64_t cur_offs; |
|
|
|
list_for_each(dentry, &devices) { |
|
dev = list_entry(dentry, struct mtd_device, link); |
|
|
|
if (get_mtd_info(dev->id->type, dev->id->num, &mtd)) |
|
return 1; |
|
|
|
part_num = 0; |
|
cur_offs = 0; |
|
list_for_each(pentry, &dev->parts) { |
|
part = list_entry(pentry, struct part_info, link); |
|
|
|
debug("spread_partitions: device = %s%d, partition %d =" |
|
" (%s) 0x%08llx@0x%08llx\n", |
|
MTD_DEV_TYPE(dev->id->type), dev->id->num, |
|
part_num, part->name, part->size, |
|
part->offset); |
|
|
|
if (cur_offs > part->offset) |
|
part->offset = cur_offs; |
|
|
|
spread_partition(mtd, part, &cur_offs); |
|
|
|
part_num++; |
|
} |
|
} |
|
|
|
index_partitions(); |
|
|
|
if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) { |
|
printf("generated mtdparts too long, resetting to null\n"); |
|
return 1; |
|
} |
|
return 0; |
|
} |
|
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */ |
|
|
|
/** |
|
* The mtdparts variable tends to be long. If we need to access it |
|
* before the env is relocated, then we need to use our own stack |
|
* buffer. gd->env_buf will be too small. |
|
* |
|
* @param buf temporary buffer pointer MTDPARTS_MAXLEN long |
|
* @return mtdparts variable string, NULL if not found |
|
*/ |
|
static const char *env_get_mtdparts(char *buf) |
|
{ |
|
if (gd->flags & GD_FLG_ENV_READY) |
|
return env_get("mtdparts"); |
|
if (env_get_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1) |
|
return buf; |
|
return NULL; |
|
} |
|
|
|
/** |
|
* Accept character string describing mtd partitions and call device_parse() |
|
* for each entry. Add created devices to the global devices list. |
|
* |
|
* @param mtdparts string specifing mtd partitions |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int parse_mtdparts(const char *const mtdparts) |
|
{ |
|
const char *p; |
|
struct mtd_device *dev; |
|
int err = 1; |
|
char tmp_parts[MTDPARTS_MAXLEN]; |
|
|
|
debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts); |
|
|
|
/* delete all devices and partitions */ |
|
if (mtd_devices_init() != 0) { |
|
printf("could not initialise device list\n"); |
|
return err; |
|
} |
|
|
|
/* re-read 'mtdparts' variable, mtd_devices_init may be updating env */ |
|
p = env_get_mtdparts(tmp_parts); |
|
if (!p) |
|
p = mtdparts; |
|
|
|
if (strncmp(p, "mtdparts=", 9) != 0) { |
|
printf("mtdparts variable doesn't start with 'mtdparts='\n"); |
|
return err; |
|
} |
|
p += 9; |
|
|
|
while (*p != '\0') { |
|
err = 1; |
|
if ((device_parse(p, &p, &dev) != 0) || (!dev)) |
|
break; |
|
|
|
debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type), |
|
dev->id->num, dev->id->mtd_id); |
|
|
|
/* check if parsed device is already on the list */ |
|
if (device_find(dev->id->type, dev->id->num) != NULL) { |
|
printf("device %s%d redefined, please correct mtdparts variable\n", |
|
MTD_DEV_TYPE(dev->id->type), dev->id->num); |
|
break; |
|
} |
|
|
|
list_add_tail(&dev->link, &devices); |
|
err = 0; |
|
} |
|
if (err == 1) { |
|
free(dev); |
|
device_delall(&devices); |
|
} |
|
|
|
return err; |
|
} |
|
|
|
/** |
|
* Parse provided string describing mtdids mapping (see file header for mtdids |
|
* variable format). Allocate memory for each entry and add all found entries |
|
* to the global mtdids list. |
|
* |
|
* @param ids mapping string |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int parse_mtdids(const char *const ids) |
|
{ |
|
const char *p = ids; |
|
const char *mtd_id; |
|
int mtd_id_len; |
|
struct mtdids *id; |
|
struct list_head *entry, *n; |
|
struct mtdids *id_tmp; |
|
u8 type, num; |
|
u64 size; |
|
int ret = 1; |
|
|
|
debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids); |
|
|
|
/* clean global mtdids list */ |
|
list_for_each_safe(entry, n, &mtdids) { |
|
id_tmp = list_entry(entry, struct mtdids, link); |
|
debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num); |
|
list_del(entry); |
|
free(id_tmp); |
|
} |
|
last_ids[0] = '\0'; |
|
INIT_LIST_HEAD(&mtdids); |
|
|
|
while(p && (*p != '\0')) { |
|
|
|
ret = 1; |
|
/* parse 'nor'|'nand'|'onenand'<dev-num> */ |
|
if (mtd_id_parse(p, &p, &type, &num) != 0) |
|
break; |
|
|
|
if (*p != '=') { |
|
printf("mtdids: incorrect <dev-num>\n"); |
|
break; |
|
} |
|
p++; |
|
|
|
/* check if requested device exists */ |
|
if (mtd_device_validate(type, num, &size) != 0) |
|
return 1; |
|
|
|
/* locate <mtd-id> */ |
|
mtd_id = p; |
|
if ((p = strchr(mtd_id, ',')) != NULL) { |
|
mtd_id_len = p - mtd_id + 1; |
|
p++; |
|
} else { |
|
mtd_id_len = strlen(mtd_id) + 1; |
|
} |
|
if (mtd_id_len == 0) { |
|
printf("mtdids: no <mtd-id> identifier\n"); |
|
break; |
|
} |
|
|
|
/* check if this id is already on the list */ |
|
int double_entry = 0; |
|
list_for_each(entry, &mtdids) { |
|
id_tmp = list_entry(entry, struct mtdids, link); |
|
if ((id_tmp->type == type) && (id_tmp->num == num)) { |
|
double_entry = 1; |
|
break; |
|
} |
|
} |
|
if (double_entry) { |
|
printf("device id %s%d redefined, please correct mtdids variable\n", |
|
MTD_DEV_TYPE(type), num); |
|
break; |
|
} |
|
|
|
/* allocate mtdids structure */ |
|
if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) { |
|
printf("out of memory\n"); |
|
break; |
|
} |
|
memset(id, 0, sizeof(struct mtdids) + mtd_id_len); |
|
id->num = num; |
|
id->type = type; |
|
id->size = size; |
|
id->mtd_id = (char *)(id + 1); |
|
strncpy(id->mtd_id, mtd_id, mtd_id_len - 1); |
|
id->mtd_id[mtd_id_len - 1] = '\0'; |
|
INIT_LIST_HEAD(&id->link); |
|
|
|
debug("+ id %s%d\t%16lld bytes\t%s\n", |
|
MTD_DEV_TYPE(id->type), id->num, |
|
id->size, id->mtd_id); |
|
|
|
list_add_tail(&id->link, &mtdids); |
|
ret = 0; |
|
} |
|
if (ret == 1) { |
|
/* clean mtdids list and free allocated memory */ |
|
list_for_each_safe(entry, n, &mtdids) { |
|
id_tmp = list_entry(entry, struct mtdids, link); |
|
list_del(entry); |
|
free(id_tmp); |
|
} |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
|
|
/** |
|
* Parse and initialize global mtdids mapping and create global |
|
* device/partition list. |
|
* |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
int mtdparts_init(void) |
|
{ |
|
static int initialized = 0; |
|
const char *ids, *parts; |
|
const char *current_partition; |
|
int ids_changed; |
|
char tmp_ep[PARTITION_MAXLEN + 1]; |
|
char tmp_parts[MTDPARTS_MAXLEN]; |
|
|
|
debug("\n---mtdparts_init---\n"); |
|
if (!initialized) { |
|
INIT_LIST_HEAD(&mtdids); |
|
INIT_LIST_HEAD(&devices); |
|
memset(last_ids, 0, sizeof(last_ids)); |
|
memset(last_parts, 0, sizeof(last_parts)); |
|
memset(last_partition, 0, sizeof(last_partition)); |
|
#if defined(CONFIG_SYS_MTDPARTS_RUNTIME) |
|
board_mtdparts_default(&mtdids_default, &mtdparts_default); |
|
#endif |
|
use_defaults = 1; |
|
initialized = 1; |
|
} |
|
|
|
/* get variables */ |
|
ids = env_get("mtdids"); |
|
parts = env_get_mtdparts(tmp_parts); |
|
current_partition = env_get("partition"); |
|
|
|
/* save it for later parsing, cannot rely on current partition pointer |
|
* as 'partition' variable may be updated during init */ |
|
memset(tmp_parts, 0, sizeof(tmp_parts)); |
|
memset(tmp_ep, 0, sizeof(tmp_ep)); |
|
if (current_partition) |
|
strncpy(tmp_ep, current_partition, PARTITION_MAXLEN); |
|
|
|
debug("last_ids : %s\n", last_ids); |
|
debug("env_ids : %s\n", ids); |
|
debug("last_parts: %s\n", last_parts); |
|
debug("env_parts : %s\n\n", parts); |
|
|
|
debug("last_partition : %s\n", last_partition); |
|
debug("env_partition : %s\n", current_partition); |
|
|
|
/* if mtdids variable is empty try to use defaults */ |
|
if (!ids) { |
|
if (mtdids_default) { |
|
debug("mtdids variable not defined, using default\n"); |
|
ids = mtdids_default; |
|
env_set("mtdids", (char *)ids); |
|
} else { |
|
printf("mtdids not defined, no default present\n"); |
|
return 1; |
|
} |
|
} |
|
if (strlen(ids) > MTDIDS_MAXLEN - 1) { |
|
printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN); |
|
return 1; |
|
} |
|
|
|
/* use defaults when mtdparts variable is not defined |
|
* once mtdparts is saved environment, drop use_defaults flag */ |
|
if (!parts) { |
|
if (mtdparts_default && use_defaults) { |
|
parts = mtdparts_default; |
|
if (env_set("mtdparts", (char *)parts) == 0) |
|
use_defaults = 0; |
|
} else |
|
printf("mtdparts variable not set, see 'help mtdparts'\n"); |
|
} |
|
|
|
if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) { |
|
printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN); |
|
return 1; |
|
} |
|
|
|
/* check if we have already parsed those mtdids */ |
|
if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) { |
|
ids_changed = 0; |
|
} else { |
|
ids_changed = 1; |
|
|
|
if (parse_mtdids(ids) != 0) { |
|
mtd_devices_init(); |
|
return 1; |
|
} |
|
|
|
/* ok it's good, save new ids */ |
|
strncpy(last_ids, ids, MTDIDS_MAXLEN); |
|
} |
|
|
|
/* parse partitions if either mtdparts or mtdids were updated */ |
|
if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) { |
|
if (parse_mtdparts(parts) != 0) |
|
return 1; |
|
|
|
if (list_empty(&devices)) { |
|
printf("mtdparts_init: no valid partitions\n"); |
|
return 1; |
|
} |
|
|
|
/* ok it's good, save new parts */ |
|
strncpy(last_parts, parts, MTDPARTS_MAXLEN); |
|
|
|
/* reset first partition from first dev from the list as current */ |
|
current_mtd_dev = list_entry(devices.next, struct mtd_device, link); |
|
current_mtd_partnum = 0; |
|
current_save(); |
|
|
|
debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n", |
|
MTD_DEV_TYPE(current_mtd_dev->id->type), |
|
current_mtd_dev->id->num, current_mtd_partnum); |
|
} |
|
|
|
/* mtdparts variable was reset to NULL, delete all devices/partitions */ |
|
if (!parts && (last_parts[0] != '\0')) |
|
return mtd_devices_init(); |
|
|
|
/* do not process current partition if mtdparts variable is null */ |
|
if (!parts) |
|
return 0; |
|
|
|
/* is current partition set in environment? if so, use it */ |
|
if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) { |
|
struct part_info *p; |
|
struct mtd_device *cdev; |
|
u8 pnum; |
|
|
|
debug("--- getting current partition: %s\n", tmp_ep); |
|
|
|
if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) { |
|
current_mtd_dev = cdev; |
|
current_mtd_partnum = pnum; |
|
current_save(); |
|
} |
|
} else if (env_get("partition") == NULL) { |
|
debug("no partition variable set, setting...\n"); |
|
current_save(); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Return pointer to the partition of a requested number from a requested |
|
* device. |
|
* |
|
* @param dev device that is to be searched for a partition |
|
* @param part_num requested partition number |
|
* @return pointer to the part_info, NULL otherwise |
|
*/ |
|
static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num) |
|
{ |
|
struct list_head *entry; |
|
struct part_info *part; |
|
int num; |
|
|
|
if (!dev) |
|
return NULL; |
|
|
|
debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n", |
|
part_num, MTD_DEV_TYPE(dev->id->type), |
|
dev->id->num, dev->id->mtd_id); |
|
|
|
if (part_num >= dev->num_parts) { |
|
printf("invalid partition number %d for device %s%d (%s)\n", |
|
part_num, MTD_DEV_TYPE(dev->id->type), |
|
dev->id->num, dev->id->mtd_id); |
|
return NULL; |
|
} |
|
|
|
/* locate partition number, return it */ |
|
num = 0; |
|
list_for_each(entry, &dev->parts) { |
|
part = list_entry(entry, struct part_info, link); |
|
|
|
if (part_num == num++) { |
|
return part; |
|
} |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
/***************************************************/ |
|
/* U-Boot commands */ |
|
/***************************************************/ |
|
/* command line only */ |
|
/** |
|
* Routine implementing u-boot chpart command. Sets new current partition based |
|
* on the user supplied partition id. For partition id format see find_dev_and_part(). |
|
* |
|
* @param cmdtp command internal data |
|
* @param flag command flag |
|
* @param argc number of arguments supplied to the command |
|
* @param argv arguments list |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
|
{ |
|
/* command line only */ |
|
struct mtd_device *dev; |
|
struct part_info *part; |
|
u8 pnum; |
|
|
|
if (mtdparts_init() !=0) |
|
return 1; |
|
|
|
if (argc < 2) { |
|
printf("no partition id specified\n"); |
|
return 1; |
|
} |
|
|
|
if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0) |
|
return 1; |
|
|
|
current_mtd_dev = dev; |
|
current_mtd_partnum = pnum; |
|
current_save(); |
|
|
|
printf("partition changed to %s%d,%d\n", |
|
MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum); |
|
|
|
return 0; |
|
} |
|
|
|
/** |
|
* Routine implementing u-boot mtdparts command. Initialize/update default global |
|
* partition list and process user partition request (list, add, del). |
|
* |
|
* @param cmdtp command internal data |
|
* @param flag command flag |
|
* @param argc number of arguments supplied to the command |
|
* @param argv arguments list |
|
* @return 0 on success, 1 otherwise |
|
*/ |
|
static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc, |
|
char * const argv[]) |
|
{ |
|
if (argc == 2) { |
|
if (strcmp(argv[1], "default") == 0) { |
|
env_set("mtdids", NULL); |
|
env_set("mtdparts", NULL); |
|
env_set("partition", NULL); |
|
use_defaults = 1; |
|
|
|
mtdparts_init(); |
|
return 0; |
|
} else if (strcmp(argv[1], "delall") == 0) { |
|
/* this may be the first run, initialize lists if needed */ |
|
mtdparts_init(); |
|
|
|
env_set("mtdparts", NULL); |
|
|
|
/* mtd_devices_init() calls current_save() */ |
|
return mtd_devices_init(); |
|
} |
|
} |
|
|
|
/* make sure we are in sync with env variables */ |
|
if (mtdparts_init() != 0) |
|
return 1; |
|
|
|
if (argc == 1) { |
|
list_partitions(); |
|
return 0; |
|
} |
|
|
|
/* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */ |
|
if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) { |
|
#define PART_ADD_DESC_MAXLEN 64 |
|
char tmpbuf[PART_ADD_DESC_MAXLEN]; |
|
#if defined(CONFIG_CMD_MTDPARTS_SPREAD) |
|
struct mtd_info *mtd; |
|
uint64_t next_offset; |
|
#endif |
|
u8 type, num, len; |
|
struct mtd_device *dev; |
|
struct mtd_device *dev_tmp; |
|
struct mtdids *id; |
|
struct part_info *p; |
|
|
|
if (mtd_id_parse(argv[2], NULL, &type, &num) != 0) |
|
return 1; |
|
|
|
if ((id = id_find(type, num)) == NULL) { |
|
printf("no such device %s defined in mtdids variable\n", argv[2]); |
|
return 1; |
|
} |
|
|
|
len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */ |
|
len += strlen(argv[3]); /* size@offset */ |
|
len += strlen(argv[4]) + 2; /* '(' name ')' */ |
|
if (argv[5] && (strlen(argv[5]) == 2)) |
|
len += 2; /* 'ro' */ |
|
|
|
if (len >= PART_ADD_DESC_MAXLEN) { |
|
printf("too long partition description\n"); |
|
return 1; |
|
} |
|
sprintf(tmpbuf, "%s:%s(%s)%s", |
|
id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : ""); |
|
debug("add tmpbuf: %s\n", tmpbuf); |
|
|
|
if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev)) |
|
return 1; |
|
|
|
debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type), |
|
dev->id->num, dev->id->mtd_id); |
|
|
|
p = list_entry(dev->parts.next, struct part_info, link); |
|
|
|
#if defined(CONFIG_CMD_MTDPARTS_SPREAD) |
|
if (get_mtd_info(dev->id->type, dev->id->num, &mtd)) |
|
return 1; |
|
|
|
if (!strcmp(&argv[1][3], ".spread")) { |
|
spread_partition(mtd, p, &next_offset); |
|
debug("increased %s to %llu bytes\n", p->name, p->size); |
|
} |
|
#endif |
|
|
|
dev_tmp = device_find(dev->id->type, dev->id->num); |
|
if (dev_tmp == NULL) { |
|
device_add(dev); |
|
} else if (part_add(dev_tmp, p) != 0) { |
|
/* merge new partition with existing ones*/ |
|
device_del(dev); |
|
return 1; |
|
} |
|
|
|
if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) { |
|
printf("generated mtdparts too long, resetting to null\n"); |
|
return 1; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* mtdparts del part-id */ |
|
if ((argc == 3) && (strcmp(argv[1], "del") == 0)) { |
|
debug("del: part-id = %s\n", argv[2]); |
|
|
|
return delete_partition(argv[2]); |
|
} |
|
|
|
#if defined(CONFIG_CMD_MTDPARTS_SPREAD) |
|
if ((argc == 2) && (strcmp(argv[1], "spread") == 0)) |
|
return spread_partitions(); |
|
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */ |
|
|
|
return CMD_RET_USAGE; |
|
} |
|
|
|
/***************************************************/ |
|
U_BOOT_CMD( |
|
chpart, 2, 0, do_chpart, |
|
"change active partition", |
|
"part-id\n" |
|
" - change active partition (e.g. part-id = nand0,1)" |
|
); |
|
|
|
#ifdef CONFIG_SYS_LONGHELP |
|
static char mtdparts_help_text[] = |
|
"\n" |
|
" - list partition table\n" |
|
"mtdparts delall\n" |
|
" - delete all partitions\n" |
|
"mtdparts del part-id\n" |
|
" - delete partition (e.g. part-id = nand0,1)\n" |
|
"mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n" |
|
" - add partition\n" |
|
#if defined(CONFIG_CMD_MTDPARTS_SPREAD) |
|
"mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n" |
|
" - add partition, padding size by skipping bad blocks\n" |
|
#endif |
|
"mtdparts default\n" |
|
" - reset partition table to defaults\n" |
|
#if defined(CONFIG_CMD_MTDPARTS_SPREAD) |
|
"mtdparts spread\n" |
|
" - adjust the sizes of the partitions so they are\n" |
|
" at least as big as the mtdparts variable specifies\n" |
|
" and they each start on a good block\n\n" |
|
#else |
|
"\n" |
|
#endif /* CONFIG_CMD_MTDPARTS_SPREAD */ |
|
"-----\n\n" |
|
"this command uses three environment variables:\n\n" |
|
"'partition' - keeps current partition identifier\n\n" |
|
"partition := <part-id>\n" |
|
"<part-id> := <dev-id>,part_num\n\n" |
|
"'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n" |
|
"mtdids=<idmap>[,<idmap>,...]\n\n" |
|
"<idmap> := <dev-id>=<mtd-id>\n" |
|
"<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n" |
|
"<dev-num> := mtd device number, 0...\n" |
|
"<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n" |
|
"'mtdparts' - partition list\n\n" |
|
"mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n" |
|
"<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n" |
|
"<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n" |
|
"<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n" |
|
"<size> := standard linux memsize OR '-' to denote all remaining space\n" |
|
"<offset> := partition start offset within the device\n" |
|
"<name> := '(' NAME ')'\n" |
|
"<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)"; |
|
#endif |
|
|
|
U_BOOT_CMD( |
|
mtdparts, 6, 0, do_mtdparts, |
|
"define flash/nand partitions", mtdparts_help_text |
|
); |
|
/***************************************************/
|
|
|