LM
/
u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
u-boot/cmd/flash.c

700 lines
18 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2000
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*/
/*
* FLASH support
*/
#include <common.h>
#include <command.h>
#include <log.h>
#include <uuid.h>
#if defined(CONFIG_CMD_MTDPARTS)
#include <jffs2/jffs2.h>
/* partition handling routines */
int mtdparts_init(void);
int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
int find_dev_and_part(const char *id, struct mtd_device **dev,
u8 *part_num, struct part_info **part);
#endif
#ifdef CONFIG_MTD_NOR_FLASH
#include <flash.h>
#include <mtd/cfi_flash.h>
/*
* The user interface starts numbering for Flash banks with 1
* for historical reasons.
*/
/*
* this routine looks for an abbreviated flash range specification.
* the syntax is B:SF[-SL], where B is the bank number, SF is the first
* sector to erase, and SL is the last sector to erase (defaults to SF).
* bank numbers start at 1 to be consistent with other specs, sector numbers
* start at zero.
*
* returns: 1 - correct spec; *pinfo, *psf and *psl are
* set appropriately
* 0 - doesn't look like an abbreviated spec
* -1 - looks like an abbreviated spec, but got
* a parsing error, a number out of range,
* or an invalid flash bank.
*/
static int
abbrev_spec(char *str, flash_info_t **pinfo, int *psf, int *psl)
{
flash_info_t *fp;
int bank, first, last;
char *p, *ep;
p = strchr(str, ':');
if (!p)
return 0;
*p++ = '\0';
bank = dectoul(str, &ep);
if (ep == str || *ep != '\0' ||
bank < 1 || bank > CFI_FLASH_BANKS)
return -1;
fp = &flash_info[bank - 1];
if (fp->flash_id == FLASH_UNKNOWN)
return -1;
str = p;
p = strchr(str, '-');
if (p)
*p++ = '\0';
first = dectoul(str, &ep);
if (ep == str || *ep != '\0' || first >= fp->sector_count)
return -1;
if (p) {
last = dectoul(p, &ep);
if (ep == p || *ep != '\0' ||
last < first || last >= fp->sector_count)
return -1;
} else {
last = first;
}
*pinfo = fp;
*psf = first;
*psl = last;
return 1;
}
/*
* Take *addr in Flash and adjust it to fall on the end of its sector
*/
int flash_sect_roundb(ulong *addr)
{
flash_info_t *info;
ulong bank, sector_end_addr;
char found;
int i;
/* find the end addr of the sector where the *addr is */
found = 0;
for (bank = 0; bank < CFI_FLASH_BANKS && !found; ++bank) {
info = &flash_info[bank];
for (i = 0; i < info->sector_count && !found; ++i) {
/* get the end address of the sector */
if (i == info->sector_count - 1) {
sector_end_addr = info->start[0] +
info->size - 1;
} else {
sector_end_addr = info->start[i + 1] - 1;
}
if (*addr <= sector_end_addr && *addr >= info->start[i]) {
found = 1;
/* adjust *addr if necessary */
if (*addr < sector_end_addr)
*addr = sector_end_addr;
} /* sector */
} /* bank */
}
if (!found) {
/* error, address not in flash */
printf("Error: end address (0x%08lx) not in flash!\n", *addr);
return 1;
}
return 0;
}
/*
* This function computes the start and end addresses for both
* erase and protect commands. The range of the addresses on which
* either of the commands is to operate can be given in two forms:
* 1. <cmd> start end - operate on <'start', 'end')
* 2. <cmd> start +length - operate on <'start', start + length)
* If the second form is used and the end address doesn't fall on the
* sector boundary, than it will be adjusted to the next sector boundary.
* If it isn't in the flash, the function will fail (return -1).
* Input:
* arg1, arg2: address specification (i.e. both command arguments)
* Output:
* addr_first, addr_last: computed address range
* Return:
* 1: success
* -1: failure (bad format, bad address).
*/
static int
addr_spec(char *arg1, char *arg2, ulong *addr_first, ulong *addr_last)
{
char *ep;
char len_used; /* indicates if the "start +length" form used */
*addr_first = hextoul(arg1, &ep);
if (ep == arg1 || *ep != '\0')
return -1;
len_used = 0;
if (arg2 && *arg2 == '+') {
len_used = 1;
++arg2;
}
*addr_last = hextoul(arg2, &ep);
if (ep == arg2 || *ep != '\0')
return -1;
if (len_used) {
/*
* *addr_last has the length, compute correct *addr_last
* XXX watch out for the integer overflow! Right now it is
* checked for in both the callers.
*/
*addr_last = *addr_first + *addr_last - 1;
/*
* It may happen that *addr_last doesn't fall on the sector
* boundary. We want to round such an address to the next
* sector boundary, so that the commands don't fail later on.
*/
if (flash_sect_roundb(addr_last) > 0)
return -1;
} /* "start +length" from used */
return 1;
}
static int
flash_fill_sect_ranges(ulong addr_first, ulong addr_last,
int *s_first, int *s_last,
int *s_count)
{
flash_info_t *info;
ulong bank;
int rcode = 0;
*s_count = 0;
for (bank = 0; bank < CFI_FLASH_BANKS; ++bank) {
s_first[bank] = -1; /* first sector to erase */
s_last[bank] = -1; /* last sector to erase */
}
for (bank = 0, info = &flash_info[0];
(bank < CFI_FLASH_BANKS) && (addr_first <= addr_last);
++bank, ++info) {
ulong b_end;
int sect;
short s_end;
if (info->flash_id == FLASH_UNKNOWN)
continue;
b_end = info->start[0] + info->size - 1; /* bank end addr */
s_end = info->sector_count - 1; /* last sector */
for (sect = 0; sect < info->sector_count; ++sect) {
ulong end; /* last address in current sect */
end = (sect == s_end) ? b_end : info->start[sect + 1] - 1;
if (addr_first > end)
continue;
if (addr_last < info->start[sect])
continue;
if (addr_first == info->start[sect])
s_first[bank] = sect;
if (addr_last == end)
s_last[bank] = sect;
}
if (s_first[bank] >= 0) {
if (s_last[bank] < 0) {
if (addr_last > b_end) {
s_last[bank] = s_end;
} else {
puts("Error: end address not on sector boundary\n");
rcode = 1;
break;
}
}
if (s_last[bank] < s_first[bank]) {
puts("Error: end sector precedes start sector\n");
rcode = 1;
break;
}
sect = s_last[bank];
addr_first = (sect == s_end) ? b_end + 1 : info->start[sect + 1];
(*s_count) += s_last[bank] - s_first[bank] + 1;
} else if (addr_first >= info->start[0] && addr_first < b_end) {
puts("Error: start address not on sector boundary\n");
rcode = 1;
break;
} else if (s_last[bank] >= 0) {
puts("Error: cannot span across banks when they are"
" mapped in reverse order\n");
rcode = 1;
break;
}
}
return rcode;
}
#endif /* CONFIG_MTD_NOR_FLASH */
static int do_flinfo(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
#ifdef CONFIG_MTD_NOR_FLASH
ulong bank;
#endif
#ifdef CONFIG_MTD_NOR_FLASH
if (argc == 1) { /* print info for all FLASH banks */
for (bank = 0; bank < CFI_FLASH_BANKS; ++bank) {
printf("\nBank # %ld: ", bank + 1);
flash_print_info(&flash_info[bank]);
}
return 0;
}
bank = hextoul(argv[1], NULL);
if (bank < 1 || bank > CFI_FLASH_BANKS) {
printf("Only FLASH Banks # 1 ... # %d supported\n",
CFI_FLASH_BANKS);
return 1;
}
printf("\nBank # %ld: ", bank);
flash_print_info(&flash_info[bank - 1]);
#endif /* CONFIG_MTD_NOR_FLASH */
return 0;
}
static int do_flerase(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
#ifdef CONFIG_MTD_NOR_FLASH
flash_info_t *info = NULL;
ulong bank, addr_first, addr_last;
int n, sect_first = 0, sect_last = 0;
#if defined(CONFIG_CMD_MTDPARTS)
struct mtd_device *dev;
struct part_info *part;
u8 dev_type, dev_num, pnum;
#endif
int rcode = 0;
if (argc < 2)
return CMD_RET_USAGE;
if (strcmp(argv[1], "all") == 0) {
for (bank = 1; bank <= CFI_FLASH_BANKS; ++bank) {
printf("Erase Flash Bank # %ld ", bank);
info = &flash_info[bank - 1];
rcode = flash_erase(info, 0, info->sector_count - 1);
}
return rcode;
}
n = abbrev_spec(argv[1], &info, &sect_first, &sect_last);
if (n) {
if (n < 0) {
puts("Bad sector specification\n");
return 1;
}
printf("Erase Flash Sectors %d-%d in Bank # %zu ",
sect_first, sect_last, (info - flash_info) + 1);
rcode = flash_erase(info, sect_first, sect_last);
return rcode;
}
#if defined(CONFIG_CMD_MTDPARTS)
/* erase <part-id> - erase partition */
if (argc == 2 && mtd_id_parse(argv[1], NULL, &dev_type, &dev_num) == 0) {
mtdparts_init();
if (find_dev_and_part(argv[1], &dev, &pnum, &part) == 0) {
if (dev->id->type == MTD_DEV_TYPE_NOR) {
bank = dev->id->num;
info = &flash_info[bank];
addr_first = part->offset + info->start[0];
addr_last = addr_first + part->size - 1;
printf("Erase Flash Partition %s, bank %ld, 0x%08lx - 0x%08lx ",
argv[1], bank, addr_first,
addr_last);
rcode = flash_sect_erase(addr_first, addr_last);
return rcode;
}
printf("cannot erase, not a NOR device\n");
return 1;
}
}
#endif
if (argc != 3)
return CMD_RET_USAGE;
if (strcmp(argv[1], "bank") == 0) {
bank = hextoul(argv[2], NULL);
if (bank < 1 || bank > CFI_FLASH_BANKS) {
printf("Only FLASH Banks # 1 ... # %d supported\n",
CFI_FLASH_BANKS);
return 1;
}
printf("Erase Flash Bank # %ld ", bank);
info = &flash_info[bank - 1];
rcode = flash_erase(info, 0, info->sector_count - 1);
return rcode;
}
if (addr_spec(argv[1], argv[2], &addr_first, &addr_last) < 0) {
printf("Bad address format\n");
return 1;
}
if (addr_first >= addr_last)
return CMD_RET_USAGE;
rcode = flash_sect_erase(addr_first, addr_last);
return rcode;
#else
return 0;
#endif /* CONFIG_MTD_NOR_FLASH */
}
#ifdef CONFIG_MTD_NOR_FLASH
int flash_sect_erase(ulong addr_first, ulong addr_last)
{
flash_info_t *info;
ulong bank;
int s_first[CFI_FLASH_BANKS], s_last[CFI_FLASH_BANKS];
int erased = 0;
int planned;
int rcode = 0;
rcode = flash_fill_sect_ranges(addr_first, addr_last, s_first, s_last, &planned);
if (planned && rcode == 0) {
for (bank = 0, info = &flash_info[0];
bank < CFI_FLASH_BANKS && rcode == 0;
++bank, ++info) {
if (s_first[bank] >= 0) {
erased += s_last[bank] - s_first[bank] + 1;
debug("Erase Flash from 0x%08lx to 0x%08lx in Bank # %ld ",
info->start[s_first[bank]],
(s_last[bank] == info->sector_count) ?
info->start[0] + info->size - 1 :
info->start[s_last[bank] + 1] - 1,
bank + 1);
rcode = flash_erase(info, s_first[bank],
s_last[bank]);
}
}
if (rcode == 0)
printf("Erased %d sectors\n", erased);
} else if (rcode == 0) {
puts("Error: start and/or end address not on sector boundary\n");
rcode = 1;
}
return rcode;
}
#endif /* CONFIG_MTD_NOR_FLASH */
static int do_protect(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
int rcode = 0;
#ifdef CONFIG_MTD_NOR_FLASH
flash_info_t *info = NULL;
ulong bank;
int i, n, sect_first = 0, sect_last = 0;
#if defined(CONFIG_CMD_MTDPARTS)
struct mtd_device *dev;
struct part_info *part;
u8 dev_type, dev_num, pnum;
#endif
#endif /* CONFIG_MTD_NOR_FLASH */
#if defined(CONFIG_MTD_NOR_FLASH)
int p;
ulong addr_first, addr_last;
#endif
if (argc < 3)
return CMD_RET_USAGE;
#if defined(CONFIG_MTD_NOR_FLASH)
if (strcmp(argv[1], "off") == 0)
p = 0;
else if (strcmp(argv[1], "on") == 0)
p = 1;
else
return CMD_RET_USAGE;
#endif
#ifdef CONFIG_MTD_NOR_FLASH
if (strcmp(argv[2], "all") == 0) {
for (bank = 1; bank <= CFI_FLASH_BANKS; ++bank) {
info = &flash_info[bank - 1];
if (info->flash_id == FLASH_UNKNOWN)
continue;
printf("%sProtect Flash Bank # %ld\n",
p ? "" : "Un-", bank);
for (i = 0; i < info->sector_count; ++i) {
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (flash_real_protect(info, i, p))
rcode = 1;
putc('.');
#else
info->protect[i] = p;
#endif /* CONFIG_SYS_FLASH_PROTECTION */
}
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (!rcode)
puts(" done\n");
#endif /* CONFIG_SYS_FLASH_PROTECTION */
}
return rcode;
}
n = abbrev_spec(argv[2], &info, &sect_first, &sect_last);
if (n) {
if (n < 0) {
puts("Bad sector specification\n");
return 1;
}
printf("%sProtect Flash Sectors %d-%d in Bank # %zu\n",
p ? "" : "Un-", sect_first, sect_last,
(info - flash_info) + 1);
for (i = sect_first; i <= sect_last; i++) {
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (flash_real_protect(info, i, p))
rcode = 1;
putc('.');
#else
info->protect[i] = p;
#endif /* CONFIG_SYS_FLASH_PROTECTION */
}
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (!rcode)
puts(" done\n");
#endif /* CONFIG_SYS_FLASH_PROTECTION */
return rcode;
}
#if defined(CONFIG_CMD_MTDPARTS)
/* protect on/off <part-id> */
if (argc == 3 && mtd_id_parse(argv[2], NULL, &dev_type, &dev_num) == 0) {
mtdparts_init();
if (find_dev_and_part(argv[2], &dev, &pnum, &part) == 0) {
if (dev->id->type == MTD_DEV_TYPE_NOR) {
bank = dev->id->num;
info = &flash_info[bank];
addr_first = part->offset + info->start[0];
addr_last = addr_first + part->size - 1;
printf("%sProtect Flash Partition %s, "
"bank %ld, 0x%08lx - 0x%08lx\n",
p ? "" : "Un", argv[1],
bank, addr_first, addr_last);
rcode = flash_sect_protect(p, addr_first,
addr_last);
return rcode;
}
printf("cannot %sprotect, not a NOR device\n",
p ? "" : "un");
return 1;
}
}
#endif
if (argc != 4)
return CMD_RET_USAGE;
if (strcmp(argv[2], "bank") == 0) {
bank = hextoul(argv[3], NULL);
if (bank < 1 || bank > CFI_FLASH_BANKS) {
printf("Only FLASH Banks # 1 ... # %d supported\n",
CFI_FLASH_BANKS);
return 1;
}
printf("%sProtect Flash Bank # %ld\n",
p ? "" : "Un-", bank);
info = &flash_info[bank - 1];
if (info->flash_id == FLASH_UNKNOWN) {
puts("missing or unknown FLASH type\n");
return 1;
}
for (i = 0; i < info->sector_count; ++i) {
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (flash_real_protect(info, i, p))
rcode = 1;
putc('.');
#else
info->protect[i] = p;
#endif /* CONFIG_SYS_FLASH_PROTECTION */
}
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (!rcode)
puts(" done\n");
#endif /* CONFIG_SYS_FLASH_PROTECTION */
return rcode;
}
if (addr_spec(argv[2], argv[3], &addr_first, &addr_last) < 0) {
printf("Bad address format\n");
return 1;
}
if (addr_first >= addr_last)
return CMD_RET_USAGE;
rcode = flash_sect_protect(p, addr_first, addr_last);
#endif /* CONFIG_MTD_NOR_FLASH */
return rcode;
}
#ifdef CONFIG_MTD_NOR_FLASH
int flash_sect_protect(int p, ulong addr_first, ulong addr_last)
{
flash_info_t *info;
ulong bank;
int s_first[CFI_FLASH_BANKS], s_last[CFI_FLASH_BANKS];
int protected, i;
int planned;
int rcode;
rcode = flash_fill_sect_ranges(addr_first, addr_last, s_first, s_last, &planned);
protected = 0;
if (planned && rcode == 0) {
for (bank = 0, info = &flash_info[0];
bank < CFI_FLASH_BANKS; ++bank, ++info) {
if (info->flash_id == FLASH_UNKNOWN)
continue;
if (s_first[bank] >= 0 && s_first[bank] <= s_last[bank]) {
debug("%sProtecting sectors %d..%d in bank %ld\n",
p ? "" : "Un-", s_first[bank],
s_last[bank], bank + 1);
protected += s_last[bank] - s_first[bank] + 1;
for (i = s_first[bank]; i <= s_last[bank]; ++i) {
#if defined(CONFIG_SYS_FLASH_PROTECTION)
if (flash_real_protect(info, i, p))
rcode = 1;
putc('.');
#else
info->protect[i] = p;
#endif /* CONFIG_SYS_FLASH_PROTECTION */
}
}
}
#if defined(CONFIG_SYS_FLASH_PROTECTION)
puts(" done\n");
#endif /* CONFIG_SYS_FLASH_PROTECTION */
printf("%sProtected %d sectors\n",
p ? "" : "Un-", protected);
} else if (rcode == 0) {
puts("Error: start and/or end address not on sector boundary\n");
rcode = 1;
}
return rcode;
}
#endif /* CONFIG_MTD_NOR_FLASH */
/**************************************************/
#if defined(CONFIG_CMD_MTDPARTS)
# define TMP_ERASE "erase <part-id>\n - erase partition\n"
# define TMP_PROT_ON "protect on <part-id>\n - protect partition\n"
# define TMP_PROT_OFF "protect off <part-id>\n - make partition writable\n"
#else
# define TMP_ERASE /* empty */
# define TMP_PROT_ON /* empty */
# define TMP_PROT_OFF /* empty */
#endif
U_BOOT_CMD(
flinfo, 2, 1, do_flinfo,
"print FLASH memory information",
"\n - print information for all FLASH memory banks\n"
"flinfo N\n - print information for FLASH memory bank # N"
);
U_BOOT_CMD(
erase, 3, 0, do_flerase,
"erase FLASH memory",
"start end\n"
" - erase FLASH from addr 'start' to addr 'end'\n"
"erase start +len\n"
" - erase FLASH from addr 'start' to the end of sect w/addr 'start'+'len'-1\n"
"erase N:SF[-SL]\n - erase sectors SF-SL in FLASH bank # N\n"
"erase bank N\n - erase FLASH bank # N\n"
TMP_ERASE
"erase all\n - erase all FLASH banks"
);
U_BOOT_CMD(
protect, 4, 0, do_protect,
"enable or disable FLASH write protection",
"on start end\n"
" - protect FLASH from addr 'start' to addr 'end'\n"
"protect on start +len\n"
" - protect FLASH from addr 'start' to end of sect w/addr 'start'+'len'-1\n"
"protect on N:SF[-SL]\n"
" - protect sectors SF-SL in FLASH bank # N\n"
"protect on bank N\n - protect FLASH bank # N\n"
TMP_PROT_ON
"protect on all\n - protect all FLASH banks\n"
"protect off start end\n"
" - make FLASH from addr 'start' to addr 'end' writable\n"
"protect off start +len\n"
" - make FLASH from addr 'start' to end of sect w/addr 'start'+'len'-1 wrtable\n"
"protect off N:SF[-SL]\n"
" - make sectors SF-SL writable in FLASH bank # N\n"
"protect off bank N\n - make FLASH bank # N writable\n"
TMP_PROT_OFF
"protect off all\n - make all FLASH banks writable"
);
#undef TMP_ERASE
#undef TMP_PROT_ON
#undef TMP_PROT_OFF
Reference in New Issue View Git Blame Copy Permalink