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113 lines
2.4 KiB
113 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2010 DENX Software Engineering |
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* Wolfgang Denk <[email protected]> |
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* |
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* (C) Copyright 2005-2009 Samsung Electronics |
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* Kyungmin Park <[email protected]> |
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*/ |
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#include <common.h> |
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#include <command.h> |
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#include <environment.h> |
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#include <linux/stddef.h> |
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#include <malloc.h> |
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#include <search.h> |
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#include <errno.h> |
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#include <onenand_uboot.h> |
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#include <linux/compat.h> |
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#include <linux/mtd/mtd.h> |
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#include <linux/mtd/onenand.h> |
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#define ONENAND_MAX_ENV_SIZE CONFIG_ENV_SIZE |
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#define ONENAND_ENV_SIZE(mtd) (ONENAND_MAX_ENV_SIZE - ENV_HEADER_SIZE) |
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DECLARE_GLOBAL_DATA_PTR; |
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static int env_onenand_load(void) |
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{ |
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struct mtd_info *mtd = &onenand_mtd; |
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#ifdef CONFIG_ENV_ADDR_FLEX |
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struct onenand_chip *this = &onenand_chip; |
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#endif |
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int rc; |
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size_t retlen; |
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#ifdef ENV_IS_EMBEDDED |
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char *buf = (char *)&environment; |
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#else |
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loff_t env_addr = CONFIG_ENV_ADDR; |
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char onenand_env[ONENAND_MAX_ENV_SIZE]; |
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char *buf = (char *)&onenand_env[0]; |
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#endif /* ENV_IS_EMBEDDED */ |
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#ifndef ENV_IS_EMBEDDED |
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# ifdef CONFIG_ENV_ADDR_FLEX |
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if (FLEXONENAND(this)) |
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env_addr = CONFIG_ENV_ADDR_FLEX; |
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# endif |
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/* Check OneNAND exist */ |
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if (mtd->writesize) |
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/* Ignore read fail */ |
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mtd_read(mtd, env_addr, ONENAND_MAX_ENV_SIZE, |
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&retlen, (u_char *)buf); |
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else |
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mtd->writesize = MAX_ONENAND_PAGESIZE; |
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#endif /* !ENV_IS_EMBEDDED */ |
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rc = env_import(buf, 1); |
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if (!rc) |
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gd->env_valid = ENV_VALID; |
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return rc; |
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} |
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static int env_onenand_save(void) |
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{ |
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env_t env_new; |
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int ret; |
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struct mtd_info *mtd = &onenand_mtd; |
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#ifdef CONFIG_ENV_ADDR_FLEX |
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struct onenand_chip *this = &onenand_chip; |
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#endif |
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loff_t env_addr = CONFIG_ENV_ADDR; |
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size_t retlen; |
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struct erase_info instr = { |
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.callback = NULL, |
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}; |
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ret = env_export(&env_new); |
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if (ret) |
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return ret; |
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instr.len = CONFIG_ENV_SIZE; |
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#ifdef CONFIG_ENV_ADDR_FLEX |
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if (FLEXONENAND(this)) { |
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env_addr = CONFIG_ENV_ADDR_FLEX; |
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instr.len = CONFIG_ENV_SIZE_FLEX; |
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instr.len <<= onenand_mtd.eraseregions[0].numblocks == 1 ? |
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1 : 0; |
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} |
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#endif |
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instr.addr = env_addr; |
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instr.mtd = mtd; |
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if (mtd_erase(mtd, &instr)) { |
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printf("OneNAND: erase failed at 0x%08llx\n", env_addr); |
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return 1; |
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} |
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if (mtd_write(mtd, env_addr, ONENAND_MAX_ENV_SIZE, &retlen, |
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(u_char *)&env_new)) { |
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printf("OneNAND: write failed at 0x%llx\n", instr.addr); |
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return 2; |
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} |
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return 0; |
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} |
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U_BOOT_ENV_LOCATION(onenand) = { |
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.location = ENVL_ONENAND, |
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ENV_NAME("OneNAND") |
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.load = env_onenand_load, |
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.save = env_save_ptr(env_onenand_save), |
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};
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