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1110 lines
27 KiB
1110 lines
27 KiB
// SPDX-License-Identifier: GPL-2.0+ |
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/* |
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* (C) Copyright 2007 |
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* Gerald Van Baren, Custom IDEAS, [email protected] |
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* Based on code written by: |
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* Pantelis Antoniou <[email protected]> and |
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* Matthew McClintock <[email protected]> |
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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 <linux/ctype.h> |
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#include <linux/types.h> |
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#include <asm/global_data.h> |
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#include <linux/libfdt.h> |
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#include <fdt_support.h> |
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#include <mapmem.h> |
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#include <asm/io.h> |
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|
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#define MAX_LEVEL 32 /* how deeply nested we will go */ |
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#define SCRATCHPAD 1024 /* bytes of scratchpad memory */ |
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#define CMD_FDT_MAX_DUMP 64 |
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|
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/* |
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* Global data (for the gd->bd) |
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*/ |
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DECLARE_GLOBAL_DATA_PTR; |
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|
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static int fdt_valid(struct fdt_header **blobp); |
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static int fdt_parse_prop(char *const*newval, int count, char *data, int *len); |
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static int fdt_print(const char *pathp, char *prop, int depth); |
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static int is_printable_string(const void *data, int len); |
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|
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/* |
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* The working_fdt points to our working flattened device tree. |
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*/ |
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struct fdt_header *working_fdt; |
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|
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void set_working_fdt_addr(ulong addr) |
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{ |
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void *buf; |
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|
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buf = map_sysmem(addr, 0); |
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working_fdt = buf; |
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env_set_hex("fdtaddr", addr); |
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} |
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|
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/* |
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* Get a value from the fdt and format it to be set in the environment |
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*/ |
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static int fdt_value_env_set(const void *nodep, int len, const char *var) |
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{ |
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if (is_printable_string(nodep, len)) |
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env_set(var, (void *)nodep); |
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else if (len == 4) { |
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char buf[11]; |
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|
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sprintf(buf, "0x%08X", fdt32_to_cpu(*(fdt32_t *)nodep)); |
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env_set(var, buf); |
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} else if (len%4 == 0 && len <= 20) { |
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/* Needed to print things like sha1 hashes. */ |
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char buf[41]; |
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int i; |
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|
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for (i = 0; i < len; i += sizeof(unsigned int)) |
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sprintf(buf + (i * 2), "%08x", |
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*(unsigned int *)(nodep + i)); |
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env_set(var, buf); |
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} else { |
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printf("error: unprintable value\n"); |
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return 1; |
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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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* Flattened Device Tree command, see the help for parameter definitions. |
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*/ |
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static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) |
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{ |
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if (argc < 2) |
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return CMD_RET_USAGE; |
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|
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/* |
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* Set the address of the fdt |
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*/ |
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if (strncmp(argv[1], "ad", 2) == 0) { |
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unsigned long addr; |
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int control = 0; |
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struct fdt_header *blob; |
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/* |
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* Set the address [and length] of the fdt. |
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*/ |
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argc -= 2; |
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argv += 2; |
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/* Temporary #ifdef - some archs don't have fdt_blob yet */ |
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#ifdef CONFIG_OF_CONTROL |
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if (argc && !strcmp(*argv, "-c")) { |
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control = 1; |
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argc--; |
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argv++; |
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} |
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#endif |
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if (argc == 0) { |
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if (control) |
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blob = (struct fdt_header *)gd->fdt_blob; |
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else |
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blob = working_fdt; |
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if (!blob || !fdt_valid(&blob)) |
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return 1; |
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printf("The address of the fdt is %#08lx\n", |
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control ? (ulong)map_to_sysmem(blob) : |
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env_get_hex("fdtaddr", 0)); |
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return 0; |
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} |
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|
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addr = simple_strtoul(argv[0], NULL, 16); |
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blob = map_sysmem(addr, 0); |
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if (!fdt_valid(&blob)) |
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return 1; |
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if (control) |
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gd->fdt_blob = blob; |
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else |
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set_working_fdt_addr(addr); |
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|
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if (argc >= 2) { |
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int len; |
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int err; |
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/* |
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* Optional new length |
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*/ |
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len = simple_strtoul(argv[1], NULL, 16); |
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if (len < fdt_totalsize(blob)) { |
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printf ("New length %d < existing length %d, " |
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"ignoring.\n", |
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len, fdt_totalsize(blob)); |
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} else { |
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/* |
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* Open in place with a new length. |
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*/ |
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err = fdt_open_into(blob, blob, len); |
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if (err != 0) { |
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printf ("libfdt fdt_open_into(): %s\n", |
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fdt_strerror(err)); |
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} |
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} |
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} |
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|
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return CMD_RET_SUCCESS; |
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} |
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|
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if (!working_fdt) { |
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puts( |
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"No FDT memory address configured. Please configure\n" |
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"the FDT address via \"fdt addr <address>\" command.\n" |
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"Aborting!\n"); |
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return CMD_RET_FAILURE; |
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} |
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|
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/* |
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* Move the working_fdt |
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*/ |
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if (strncmp(argv[1], "mo", 2) == 0) { |
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struct fdt_header *newaddr; |
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int len; |
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int err; |
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|
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if (argc < 4) |
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return CMD_RET_USAGE; |
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|
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/* |
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* Set the address and length of the fdt. |
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*/ |
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working_fdt = (struct fdt_header *)simple_strtoul(argv[2], NULL, 16); |
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if (!fdt_valid(&working_fdt)) |
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return 1; |
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|
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newaddr = (struct fdt_header *)simple_strtoul(argv[3],NULL,16); |
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|
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/* |
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* If the user specifies a length, use that. Otherwise use the |
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* current length. |
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*/ |
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if (argc <= 4) { |
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len = fdt_totalsize(working_fdt); |
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} else { |
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len = simple_strtoul(argv[4], NULL, 16); |
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if (len < fdt_totalsize(working_fdt)) { |
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printf ("New length 0x%X < existing length " |
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"0x%X, aborting.\n", |
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len, fdt_totalsize(working_fdt)); |
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return 1; |
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} |
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} |
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|
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/* |
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* Copy to the new location. |
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*/ |
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err = fdt_open_into(working_fdt, newaddr, len); |
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if (err != 0) { |
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printf ("libfdt fdt_open_into(): %s\n", |
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fdt_strerror(err)); |
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return 1; |
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} |
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working_fdt = newaddr; |
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#ifdef CONFIG_OF_SYSTEM_SETUP |
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/* Call the board-specific fixup routine */ |
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} else if (strncmp(argv[1], "sys", 3) == 0) { |
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int err = ft_system_setup(working_fdt, gd->bd); |
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|
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if (err) { |
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printf("Failed to add system information to FDT: %s\n", |
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fdt_strerror(err)); |
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return CMD_RET_FAILURE; |
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} |
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#endif |
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/* |
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* Make a new node |
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*/ |
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} else if (strncmp(argv[1], "mk", 2) == 0) { |
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char *pathp; /* path */ |
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char *nodep; /* new node to add */ |
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int nodeoffset; /* node offset from libfdt */ |
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int err; |
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|
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/* |
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* Parameters: Node path, new node to be appended to the path. |
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*/ |
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if (argc < 4) |
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return CMD_RET_USAGE; |
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|
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pathp = argv[2]; |
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nodep = argv[3]; |
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|
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nodeoffset = fdt_path_offset (working_fdt, pathp); |
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if (nodeoffset < 0) { |
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/* |
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* Not found or something else bad happened. |
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*/ |
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printf ("libfdt fdt_path_offset() returned %s\n", |
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fdt_strerror(nodeoffset)); |
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return 1; |
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} |
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err = fdt_add_subnode(working_fdt, nodeoffset, nodep); |
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if (err < 0) { |
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printf ("libfdt fdt_add_subnode(): %s\n", |
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fdt_strerror(err)); |
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return 1; |
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} |
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|
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/* |
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* Set the value of a property in the working_fdt. |
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*/ |
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} else if (argv[1][0] == 's') { |
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char *pathp; /* path */ |
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char *prop; /* property */ |
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int nodeoffset; /* node offset from libfdt */ |
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static char data[SCRATCHPAD] __aligned(4);/* property storage */ |
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const void *ptmp; |
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int len; /* new length of the property */ |
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int ret; /* return value */ |
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|
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/* |
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* Parameters: Node path, property, optional value. |
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*/ |
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if (argc < 4) |
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return CMD_RET_USAGE; |
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|
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pathp = argv[2]; |
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prop = argv[3]; |
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|
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nodeoffset = fdt_path_offset (working_fdt, pathp); |
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if (nodeoffset < 0) { |
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/* |
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* Not found or something else bad happened. |
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*/ |
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printf ("libfdt fdt_path_offset() returned %s\n", |
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fdt_strerror(nodeoffset)); |
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return 1; |
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} |
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|
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if (argc == 4) { |
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len = 0; |
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} else { |
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ptmp = fdt_getprop(working_fdt, nodeoffset, prop, &len); |
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if (len > SCRATCHPAD) { |
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printf("prop (%d) doesn't fit in scratchpad!\n", |
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len); |
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return 1; |
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} |
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if (ptmp != NULL) |
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memcpy(data, ptmp, len); |
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|
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ret = fdt_parse_prop(&argv[4], argc - 4, data, &len); |
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if (ret != 0) |
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return ret; |
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} |
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|
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ret = fdt_setprop(working_fdt, nodeoffset, prop, data, len); |
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if (ret < 0) { |
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printf ("libfdt fdt_setprop(): %s\n", fdt_strerror(ret)); |
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return 1; |
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} |
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|
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/******************************************************************** |
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* Get the value of a property in the working_fdt. |
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********************************************************************/ |
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} else if (argv[1][0] == 'g') { |
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char *subcmd; /* sub-command */ |
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char *pathp; /* path */ |
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char *prop; /* property */ |
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char *var; /* variable to store result */ |
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int nodeoffset; /* node offset from libfdt */ |
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const void *nodep; /* property node pointer */ |
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int len = 0; /* new length of the property */ |
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|
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/* |
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* Parameters: Node path, property, optional value. |
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*/ |
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if (argc < 5) |
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return CMD_RET_USAGE; |
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|
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subcmd = argv[2]; |
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|
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if (argc < 6 && subcmd[0] != 's') |
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return CMD_RET_USAGE; |
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var = argv[3]; |
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pathp = argv[4]; |
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prop = argv[5]; |
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|
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nodeoffset = fdt_path_offset(working_fdt, pathp); |
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if (nodeoffset < 0) { |
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/* |
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* Not found or something else bad happened. |
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*/ |
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printf("libfdt fdt_path_offset() returned %s\n", |
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fdt_strerror(nodeoffset)); |
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return 1; |
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} |
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|
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if (subcmd[0] == 'n' || (subcmd[0] == 's' && argc == 5)) { |
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int reqIndex = -1; |
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int startDepth = fdt_node_depth( |
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working_fdt, nodeoffset); |
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int curDepth = startDepth; |
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int curIndex = -1; |
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int nextNodeOffset = fdt_next_node( |
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working_fdt, nodeoffset, &curDepth); |
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|
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if (subcmd[0] == 'n') |
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reqIndex = simple_strtoul(argv[5], NULL, 16); |
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|
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while (curDepth > startDepth) { |
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if (curDepth == startDepth + 1) |
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curIndex++; |
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if (subcmd[0] == 'n' && curIndex == reqIndex) { |
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const char *node_name; |
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|
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node_name = fdt_get_name(working_fdt, |
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nextNodeOffset, |
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NULL); |
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env_set(var, node_name); |
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return 0; |
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} |
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nextNodeOffset = fdt_next_node( |
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working_fdt, nextNodeOffset, &curDepth); |
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if (nextNodeOffset < 0) |
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break; |
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} |
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if (subcmd[0] == 's') { |
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/* get the num nodes at this level */ |
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env_set_ulong(var, curIndex + 1); |
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} else { |
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/* node index not found */ |
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printf("libfdt node not found\n"); |
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return 1; |
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} |
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} else { |
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nodep = fdt_getprop( |
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working_fdt, nodeoffset, prop, &len); |
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if (len == 0) { |
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/* no property value */ |
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env_set(var, ""); |
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return 0; |
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} else if (nodep && len > 0) { |
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if (subcmd[0] == 'v') { |
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int ret; |
|
|
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ret = fdt_value_env_set(nodep, len, |
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var); |
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if (ret != 0) |
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return ret; |
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} else if (subcmd[0] == 'a') { |
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/* Get address */ |
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char buf[11]; |
|
|
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sprintf(buf, "0x%p", nodep); |
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env_set(var, buf); |
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} else if (subcmd[0] == 's') { |
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/* Get size */ |
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char buf[11]; |
|
|
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sprintf(buf, "0x%08X", len); |
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env_set(var, buf); |
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} else |
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return CMD_RET_USAGE; |
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return 0; |
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} else { |
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printf("libfdt fdt_getprop(): %s\n", |
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fdt_strerror(len)); |
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return 1; |
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} |
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} |
|
|
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/* |
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* Print (recursive) / List (single level) |
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*/ |
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} else if ((argv[1][0] == 'p') || (argv[1][0] == 'l')) { |
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int depth = MAX_LEVEL; /* how deep to print */ |
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char *pathp; /* path */ |
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char *prop; /* property */ |
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int ret; /* return value */ |
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static char root[2] = "/"; |
|
|
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/* |
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* list is an alias for print, but limited to 1 level |
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*/ |
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if (argv[1][0] == 'l') { |
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depth = 1; |
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} |
|
|
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/* |
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* Get the starting path. The root node is an oddball, |
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* the offset is zero and has no name. |
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*/ |
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if (argc == 2) |
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pathp = root; |
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else |
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pathp = argv[2]; |
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if (argc > 3) |
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prop = argv[3]; |
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else |
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prop = NULL; |
|
|
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ret = fdt_print(pathp, prop, depth); |
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if (ret != 0) |
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return ret; |
|
|
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/* |
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* Remove a property/node |
|
*/ |
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} else if (strncmp(argv[1], "rm", 2) == 0) { |
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int nodeoffset; /* node offset from libfdt */ |
|
int err; |
|
|
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/* |
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* Get the path. The root node is an oddball, the offset |
|
* is zero and has no name. |
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*/ |
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nodeoffset = fdt_path_offset (working_fdt, argv[2]); |
|
if (nodeoffset < 0) { |
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/* |
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* Not found or something else bad happened. |
|
*/ |
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printf ("libfdt fdt_path_offset() returned %s\n", |
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fdt_strerror(nodeoffset)); |
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return 1; |
|
} |
|
/* |
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* Do the delete. A fourth parameter means delete a property, |
|
* otherwise delete the node. |
|
*/ |
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if (argc > 3) { |
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err = fdt_delprop(working_fdt, nodeoffset, argv[3]); |
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if (err < 0) { |
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printf("libfdt fdt_delprop(): %s\n", |
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fdt_strerror(err)); |
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return err; |
|
} |
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} else { |
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err = fdt_del_node(working_fdt, nodeoffset); |
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if (err < 0) { |
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printf("libfdt fdt_del_node(): %s\n", |
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fdt_strerror(err)); |
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return err; |
|
} |
|
} |
|
|
|
/* |
|
* Display header info |
|
*/ |
|
} else if (argv[1][0] == 'h') { |
|
u32 version = fdt_version(working_fdt); |
|
printf("magic:\t\t\t0x%x\n", fdt_magic(working_fdt)); |
|
printf("totalsize:\t\t0x%x (%d)\n", fdt_totalsize(working_fdt), |
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fdt_totalsize(working_fdt)); |
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printf("off_dt_struct:\t\t0x%x\n", |
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fdt_off_dt_struct(working_fdt)); |
|
printf("off_dt_strings:\t\t0x%x\n", |
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fdt_off_dt_strings(working_fdt)); |
|
printf("off_mem_rsvmap:\t\t0x%x\n", |
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fdt_off_mem_rsvmap(working_fdt)); |
|
printf("version:\t\t%d\n", version); |
|
printf("last_comp_version:\t%d\n", |
|
fdt_last_comp_version(working_fdt)); |
|
if (version >= 2) |
|
printf("boot_cpuid_phys:\t0x%x\n", |
|
fdt_boot_cpuid_phys(working_fdt)); |
|
if (version >= 3) |
|
printf("size_dt_strings:\t0x%x\n", |
|
fdt_size_dt_strings(working_fdt)); |
|
if (version >= 17) |
|
printf("size_dt_struct:\t\t0x%x\n", |
|
fdt_size_dt_struct(working_fdt)); |
|
printf("number mem_rsv:\t\t0x%x\n", |
|
fdt_num_mem_rsv(working_fdt)); |
|
printf("\n"); |
|
|
|
/* |
|
* Set boot cpu id |
|
*/ |
|
} else if (strncmp(argv[1], "boo", 3) == 0) { |
|
unsigned long tmp = simple_strtoul(argv[2], NULL, 16); |
|
fdt_set_boot_cpuid_phys(working_fdt, tmp); |
|
|
|
/* |
|
* memory command |
|
*/ |
|
} else if (strncmp(argv[1], "me", 2) == 0) { |
|
uint64_t addr, size; |
|
int err; |
|
addr = simple_strtoull(argv[2], NULL, 16); |
|
size = simple_strtoull(argv[3], NULL, 16); |
|
err = fdt_fixup_memory(working_fdt, addr, size); |
|
if (err < 0) |
|
return err; |
|
|
|
/* |
|
* mem reserve commands |
|
*/ |
|
} else if (strncmp(argv[1], "rs", 2) == 0) { |
|
if (argv[2][0] == 'p') { |
|
uint64_t addr, size; |
|
int total = fdt_num_mem_rsv(working_fdt); |
|
int j, err; |
|
printf("index\t\t start\t\t size\n"); |
|
printf("-------------------------------" |
|
"-----------------\n"); |
|
for (j = 0; j < total; j++) { |
|
err = fdt_get_mem_rsv(working_fdt, j, &addr, &size); |
|
if (err < 0) { |
|
printf("libfdt fdt_get_mem_rsv(): %s\n", |
|
fdt_strerror(err)); |
|
return err; |
|
} |
|
printf(" %x\t%08x%08x\t%08x%08x\n", j, |
|
(u32)(addr >> 32), |
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(u32)(addr & 0xffffffff), |
|
(u32)(size >> 32), |
|
(u32)(size & 0xffffffff)); |
|
} |
|
} else if (argv[2][0] == 'a') { |
|
uint64_t addr, size; |
|
int err; |
|
addr = simple_strtoull(argv[3], NULL, 16); |
|
size = simple_strtoull(argv[4], NULL, 16); |
|
err = fdt_add_mem_rsv(working_fdt, addr, size); |
|
|
|
if (err < 0) { |
|
printf("libfdt fdt_add_mem_rsv(): %s\n", |
|
fdt_strerror(err)); |
|
return err; |
|
} |
|
} else if (argv[2][0] == 'd') { |
|
unsigned long idx = simple_strtoul(argv[3], NULL, 16); |
|
int err = fdt_del_mem_rsv(working_fdt, idx); |
|
|
|
if (err < 0) { |
|
printf("libfdt fdt_del_mem_rsv(): %s\n", |
|
fdt_strerror(err)); |
|
return err; |
|
} |
|
} else { |
|
/* Unrecognized command */ |
|
return CMD_RET_USAGE; |
|
} |
|
} |
|
#ifdef CONFIG_OF_BOARD_SETUP |
|
/* Call the board-specific fixup routine */ |
|
else if (strncmp(argv[1], "boa", 3) == 0) { |
|
int err = ft_board_setup(working_fdt, gd->bd); |
|
|
|
if (err) { |
|
printf("Failed to update board information in FDT: %s\n", |
|
fdt_strerror(err)); |
|
return CMD_RET_FAILURE; |
|
} |
|
} |
|
#endif |
|
/* Create a chosen node */ |
|
else if (strncmp(argv[1], "cho", 3) == 0) { |
|
unsigned long initrd_start = 0, initrd_end = 0; |
|
|
|
if ((argc != 2) && (argc != 4)) |
|
return CMD_RET_USAGE; |
|
|
|
if (argc == 4) { |
|
initrd_start = simple_strtoul(argv[2], NULL, 16); |
|
initrd_end = simple_strtoul(argv[3], NULL, 16); |
|
} |
|
|
|
fdt_chosen(working_fdt); |
|
fdt_initrd(working_fdt, initrd_start, initrd_end); |
|
|
|
#if defined(CONFIG_FIT_SIGNATURE) |
|
} else if (strncmp(argv[1], "che", 3) == 0) { |
|
int cfg_noffset; |
|
int ret; |
|
unsigned long addr; |
|
struct fdt_header *blob; |
|
|
|
if (!working_fdt) |
|
return CMD_RET_FAILURE; |
|
|
|
if (argc > 2) { |
|
addr = simple_strtoul(argv[2], NULL, 16); |
|
blob = map_sysmem(addr, 0); |
|
} else { |
|
blob = (struct fdt_header *)gd->fdt_blob; |
|
} |
|
if (!fdt_valid(&blob)) |
|
return 1; |
|
|
|
gd->fdt_blob = blob; |
|
cfg_noffset = fit_conf_get_node(working_fdt, NULL); |
|
if (!cfg_noffset) { |
|
printf("Could not find configuration node: %s\n", |
|
fdt_strerror(cfg_noffset)); |
|
return CMD_RET_FAILURE; |
|
} |
|
|
|
ret = fit_config_verify(working_fdt, cfg_noffset); |
|
if (ret == 0) |
|
return CMD_RET_SUCCESS; |
|
else |
|
return CMD_RET_FAILURE; |
|
#endif |
|
|
|
} |
|
#ifdef CONFIG_OF_LIBFDT_OVERLAY |
|
/* apply an overlay */ |
|
else if (strncmp(argv[1], "ap", 2) == 0) { |
|
unsigned long addr; |
|
struct fdt_header *blob; |
|
int ret; |
|
|
|
if (argc != 3) |
|
return CMD_RET_USAGE; |
|
|
|
if (!working_fdt) |
|
return CMD_RET_FAILURE; |
|
|
|
addr = simple_strtoul(argv[2], NULL, 16); |
|
blob = map_sysmem(addr, 0); |
|
if (!fdt_valid(&blob)) |
|
return CMD_RET_FAILURE; |
|
|
|
/* apply method prints messages on error */ |
|
ret = fdt_overlay_apply_verbose(working_fdt, blob); |
|
if (ret) |
|
return CMD_RET_FAILURE; |
|
} |
|
#endif |
|
/* resize the fdt */ |
|
else if (strncmp(argv[1], "re", 2) == 0) { |
|
uint extrasize; |
|
if (argc > 2) |
|
extrasize = simple_strtoul(argv[2], NULL, 16); |
|
else |
|
extrasize = 0; |
|
fdt_shrink_to_minimum(working_fdt, extrasize); |
|
} |
|
else { |
|
/* Unrecognized command */ |
|
return CMD_RET_USAGE; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/****************************************************************************/ |
|
|
|
/** |
|
* fdt_valid() - Check if an FDT is valid. If not, change it to NULL |
|
* |
|
* @blobp: Pointer to FDT pointer |
|
* @return 1 if OK, 0 if bad (in which case *blobp is set to NULL) |
|
*/ |
|
static int fdt_valid(struct fdt_header **blobp) |
|
{ |
|
const void *blob = *blobp; |
|
int err; |
|
|
|
if (blob == NULL) { |
|
printf ("The address of the fdt is invalid (NULL).\n"); |
|
return 0; |
|
} |
|
|
|
err = fdt_check_header(blob); |
|
if (err == 0) |
|
return 1; /* valid */ |
|
|
|
if (err < 0) { |
|
printf("libfdt fdt_check_header(): %s", fdt_strerror(err)); |
|
/* |
|
* Be more informative on bad version. |
|
*/ |
|
if (err == -FDT_ERR_BADVERSION) { |
|
if (fdt_version(blob) < |
|
FDT_FIRST_SUPPORTED_VERSION) { |
|
printf (" - too old, fdt %d < %d", |
|
fdt_version(blob), |
|
FDT_FIRST_SUPPORTED_VERSION); |
|
} |
|
if (fdt_last_comp_version(blob) > |
|
FDT_LAST_SUPPORTED_VERSION) { |
|
printf (" - too new, fdt %d > %d", |
|
fdt_version(blob), |
|
FDT_LAST_SUPPORTED_VERSION); |
|
} |
|
} |
|
printf("\n"); |
|
*blobp = NULL; |
|
return 0; |
|
} |
|
return 1; |
|
} |
|
|
|
/****************************************************************************/ |
|
|
|
/* |
|
* Parse the user's input, partially heuristic. Valid formats: |
|
* <0x00112233 4 05> - an array of cells. Numbers follow standard |
|
* C conventions. |
|
* [00 11 22 .. nn] - byte stream |
|
* "string" - If the the value doesn't start with "<" or "[", it is |
|
* treated as a string. Note that the quotes are |
|
* stripped by the parser before we get the string. |
|
* newval: An array of strings containing the new property as specified |
|
* on the command line |
|
* count: The number of strings in the array |
|
* data: A bytestream to be placed in the property |
|
* len: The length of the resulting bytestream |
|
*/ |
|
static int fdt_parse_prop(char * const *newval, int count, char *data, int *len) |
|
{ |
|
char *cp; /* temporary char pointer */ |
|
char *newp; /* temporary newval char pointer */ |
|
unsigned long tmp; /* holds converted values */ |
|
int stridx = 0; |
|
|
|
*len = 0; |
|
newp = newval[0]; |
|
|
|
/* An array of cells */ |
|
if (*newp == '<') { |
|
newp++; |
|
while ((*newp != '>') && (stridx < count)) { |
|
/* |
|
* Keep searching until we find that last ">" |
|
* That way users don't have to escape the spaces |
|
*/ |
|
if (*newp == '\0') { |
|
newp = newval[++stridx]; |
|
continue; |
|
} |
|
|
|
cp = newp; |
|
tmp = simple_strtoul(cp, &newp, 0); |
|
if (*cp != '?') |
|
*(fdt32_t *)data = cpu_to_fdt32(tmp); |
|
else |
|
newp++; |
|
|
|
data += 4; |
|
*len += 4; |
|
|
|
/* If the ptr didn't advance, something went wrong */ |
|
if ((newp - cp) <= 0) { |
|
printf("Sorry, I could not convert \"%s\"\n", |
|
cp); |
|
return 1; |
|
} |
|
|
|
while (*newp == ' ') |
|
newp++; |
|
} |
|
|
|
if (*newp != '>') { |
|
printf("Unexpected character '%c'\n", *newp); |
|
return 1; |
|
} |
|
} else if (*newp == '[') { |
|
/* |
|
* Byte stream. Convert the values. |
|
*/ |
|
newp++; |
|
while ((stridx < count) && (*newp != ']')) { |
|
while (*newp == ' ') |
|
newp++; |
|
if (*newp == '\0') { |
|
newp = newval[++stridx]; |
|
continue; |
|
} |
|
if (!isxdigit(*newp)) |
|
break; |
|
tmp = simple_strtoul(newp, &newp, 16); |
|
*data++ = tmp & 0xFF; |
|
*len = *len + 1; |
|
} |
|
if (*newp != ']') { |
|
printf("Unexpected character '%c'\n", *newp); |
|
return 1; |
|
} |
|
} else { |
|
/* |
|
* Assume it is one or more strings. Copy it into our |
|
* data area for convenience (including the |
|
* terminating '\0's). |
|
*/ |
|
while (stridx < count) { |
|
size_t length = strlen(newp) + 1; |
|
strcpy(data, newp); |
|
data += length; |
|
*len += length; |
|
newp = newval[++stridx]; |
|
} |
|
} |
|
return 0; |
|
} |
|
|
|
/****************************************************************************/ |
|
|
|
/* |
|
* Heuristic to guess if this is a string or concatenated strings. |
|
*/ |
|
|
|
static int is_printable_string(const void *data, int len) |
|
{ |
|
const char *s = data; |
|
|
|
/* zero length is not */ |
|
if (len == 0) |
|
return 0; |
|
|
|
/* must terminate with zero or '\n' */ |
|
if (s[len - 1] != '\0' && s[len - 1] != '\n') |
|
return 0; |
|
|
|
/* printable or a null byte (concatenated strings) */ |
|
while (((*s == '\0') || isprint(*s) || isspace(*s)) && (len > 0)) { |
|
/* |
|
* If we see a null, there are three possibilities: |
|
* 1) If len == 1, it is the end of the string, printable |
|
* 2) Next character also a null, not printable. |
|
* 3) Next character not a null, continue to check. |
|
*/ |
|
if (s[0] == '\0') { |
|
if (len == 1) |
|
return 1; |
|
if (s[1] == '\0') |
|
return 0; |
|
} |
|
s++; |
|
len--; |
|
} |
|
|
|
/* Not the null termination, or not done yet: not printable */ |
|
if (*s != '\0' || (len != 0)) |
|
return 0; |
|
|
|
return 1; |
|
} |
|
|
|
|
|
/* |
|
* Print the property in the best format, a heuristic guess. Print as |
|
* a string, concatenated strings, a byte, word, double word, or (if all |
|
* else fails) it is printed as a stream of bytes. |
|
*/ |
|
static void print_data(const void *data, int len) |
|
{ |
|
int j; |
|
|
|
/* no data, don't print */ |
|
if (len == 0) |
|
return; |
|
|
|
/* |
|
* It is a string, but it may have multiple strings (embedded '\0's). |
|
*/ |
|
if (is_printable_string(data, len)) { |
|
puts("\""); |
|
j = 0; |
|
while (j < len) { |
|
if (j > 0) |
|
puts("\", \""); |
|
puts(data); |
|
j += strlen(data) + 1; |
|
data += strlen(data) + 1; |
|
} |
|
puts("\""); |
|
return; |
|
} |
|
|
|
if ((len %4) == 0) { |
|
if (len > CMD_FDT_MAX_DUMP) |
|
printf("* 0x%p [0x%08x]", data, len); |
|
else { |
|
const __be32 *p; |
|
|
|
printf("<"); |
|
for (j = 0, p = data; j < len/4; j++) |
|
printf("0x%08x%s", fdt32_to_cpu(p[j]), |
|
j < (len/4 - 1) ? " " : ""); |
|
printf(">"); |
|
} |
|
} else { /* anything else... hexdump */ |
|
if (len > CMD_FDT_MAX_DUMP) |
|
printf("* 0x%p [0x%08x]", data, len); |
|
else { |
|
const u8 *s; |
|
|
|
printf("["); |
|
for (j = 0, s = data; j < len; j++) |
|
printf("%02x%s", s[j], j < len - 1 ? " " : ""); |
|
printf("]"); |
|
} |
|
} |
|
} |
|
|
|
/****************************************************************************/ |
|
|
|
/* |
|
* Recursively print (a portion of) the working_fdt. The depth parameter |
|
* determines how deeply nested the fdt is printed. |
|
*/ |
|
static int fdt_print(const char *pathp, char *prop, int depth) |
|
{ |
|
static char tabs[MAX_LEVEL+1] = |
|
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t" |
|
"\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t"; |
|
const void *nodep; /* property node pointer */ |
|
int nodeoffset; /* node offset from libfdt */ |
|
int nextoffset; /* next node offset from libfdt */ |
|
uint32_t tag; /* tag */ |
|
int len; /* length of the property */ |
|
int level = 0; /* keep track of nesting level */ |
|
const struct fdt_property *fdt_prop; |
|
|
|
nodeoffset = fdt_path_offset (working_fdt, pathp); |
|
if (nodeoffset < 0) { |
|
/* |
|
* Not found or something else bad happened. |
|
*/ |
|
printf ("libfdt fdt_path_offset() returned %s\n", |
|
fdt_strerror(nodeoffset)); |
|
return 1; |
|
} |
|
/* |
|
* The user passed in a property as well as node path. |
|
* Print only the given property and then return. |
|
*/ |
|
if (prop) { |
|
nodep = fdt_getprop (working_fdt, nodeoffset, prop, &len); |
|
if (len == 0) { |
|
/* no property value */ |
|
printf("%s %s\n", pathp, prop); |
|
return 0; |
|
} else if (nodep && len > 0) { |
|
printf("%s = ", prop); |
|
print_data (nodep, len); |
|
printf("\n"); |
|
return 0; |
|
} else { |
|
printf ("libfdt fdt_getprop(): %s\n", |
|
fdt_strerror(len)); |
|
return 1; |
|
} |
|
} |
|
|
|
/* |
|
* The user passed in a node path and no property, |
|
* print the node and all subnodes. |
|
*/ |
|
while(level >= 0) { |
|
tag = fdt_next_tag(working_fdt, nodeoffset, &nextoffset); |
|
switch(tag) { |
|
case FDT_BEGIN_NODE: |
|
pathp = fdt_get_name(working_fdt, nodeoffset, NULL); |
|
if (level <= depth) { |
|
if (pathp == NULL) |
|
pathp = "/* NULL pointer error */"; |
|
if (*pathp == '\0') |
|
pathp = "/"; /* root is nameless */ |
|
printf("%s%s {\n", |
|
&tabs[MAX_LEVEL - level], pathp); |
|
} |
|
level++; |
|
if (level >= MAX_LEVEL) { |
|
printf("Nested too deep, aborting.\n"); |
|
return 1; |
|
} |
|
break; |
|
case FDT_END_NODE: |
|
level--; |
|
if (level <= depth) |
|
printf("%s};\n", &tabs[MAX_LEVEL - level]); |
|
if (level == 0) { |
|
level = -1; /* exit the loop */ |
|
} |
|
break; |
|
case FDT_PROP: |
|
fdt_prop = fdt_offset_ptr(working_fdt, nodeoffset, |
|
sizeof(*fdt_prop)); |
|
pathp = fdt_string(working_fdt, |
|
fdt32_to_cpu(fdt_prop->nameoff)); |
|
len = fdt32_to_cpu(fdt_prop->len); |
|
nodep = fdt_prop->data; |
|
if (len < 0) { |
|
printf ("libfdt fdt_getprop(): %s\n", |
|
fdt_strerror(len)); |
|
return 1; |
|
} else if (len == 0) { |
|
/* the property has no value */ |
|
if (level <= depth) |
|
printf("%s%s;\n", |
|
&tabs[MAX_LEVEL - level], |
|
pathp); |
|
} else { |
|
if (level <= depth) { |
|
printf("%s%s = ", |
|
&tabs[MAX_LEVEL - level], |
|
pathp); |
|
print_data (nodep, len); |
|
printf(";\n"); |
|
} |
|
} |
|
break; |
|
case FDT_NOP: |
|
printf("%s/* NOP */\n", &tabs[MAX_LEVEL - level]); |
|
break; |
|
case FDT_END: |
|
return 1; |
|
default: |
|
if (level <= depth) |
|
printf("Unknown tag 0x%08X\n", tag); |
|
return 1; |
|
} |
|
nodeoffset = nextoffset; |
|
} |
|
return 0; |
|
} |
|
|
|
/********************************************************************/ |
|
#ifdef CONFIG_SYS_LONGHELP |
|
static char fdt_help_text[] = |
|
"addr [-c] <addr> [<length>] - Set the [control] fdt location to <addr>\n" |
|
#ifdef CONFIG_OF_LIBFDT_OVERLAY |
|
"fdt apply <addr> - Apply overlay to the DT\n" |
|
#endif |
|
#ifdef CONFIG_OF_BOARD_SETUP |
|
"fdt boardsetup - Do board-specific set up\n" |
|
#endif |
|
#ifdef CONFIG_OF_SYSTEM_SETUP |
|
"fdt systemsetup - Do system-specific set up\n" |
|
#endif |
|
"fdt move <fdt> <newaddr> <length> - Copy the fdt to <addr> and make it active\n" |
|
"fdt resize [<extrasize>] - Resize fdt to size + padding to 4k addr + some optional <extrasize> if needed\n" |
|
"fdt print <path> [<prop>] - Recursive print starting at <path>\n" |
|
"fdt list <path> [<prop>] - Print one level starting at <path>\n" |
|
"fdt get value <var> <path> <prop> - Get <property> and store in <var>\n" |
|
"fdt get name <var> <path> <index> - Get name of node <index> and store in <var>\n" |
|
"fdt get addr <var> <path> <prop> - Get start address of <property> and store in <var>\n" |
|
"fdt get size <var> <path> [<prop>] - Get size of [<property>] or num nodes and store in <var>\n" |
|
"fdt set <path> <prop> [<val>] - Set <property> [to <val>]\n" |
|
"fdt mknode <path> <node> - Create a new node after <path>\n" |
|
"fdt rm <path> [<prop>] - Delete the node or <property>\n" |
|
"fdt header - Display header info\n" |
|
"fdt bootcpu <id> - Set boot cpuid\n" |
|
"fdt memory <addr> <size> - Add/Update memory node\n" |
|
"fdt rsvmem print - Show current mem reserves\n" |
|
"fdt rsvmem add <addr> <size> - Add a mem reserve\n" |
|
"fdt rsvmem delete <index> - Delete a mem reserves\n" |
|
"fdt chosen [<start> <end>] - Add/update the /chosen branch in the tree\n" |
|
" <start>/<end> - initrd start/end addr\n" |
|
#if defined(CONFIG_FIT_SIGNATURE) |
|
"fdt checksign [<addr>] - check FIT signature\n" |
|
" <start> - addr of key blob\n" |
|
" default gd->fdt_blob\n" |
|
#endif |
|
"NOTE: Dereference aliases by omitting the leading '/', " |
|
"e.g. fdt print ethernet0."; |
|
#endif |
|
|
|
U_BOOT_CMD( |
|
fdt, 255, 0, do_fdt, |
|
"flattened device tree utility commands", fdt_help_text |
|
);
|
|
|