/* * (C) Copyright 2000 * Wolfgang Denk, DENX Software Engineering, wd@denx.de. * * SPDX-License-Identifier: GPL-2.0+ */ /* * FLASH support */ #include <common.h> #include <command.h> #ifdef CONFIG_HAS_DATAFLASH #include <dataflash.h> #endif #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 #ifndef CONFIG_SYS_NO_FLASH #include <flash.h> #include <mtd/cfi_flash.h> extern flash_info_t flash_info[]; /* info for FLASH chips */ /* * 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; if ((p = strchr (str, ':')) == NULL) return 0; *p++ = '\0'; bank = simple_strtoul (str, &ep, 10); if (ep == str || *ep != '\0' || bank < 1 || bank > CONFIG_SYS_MAX_FLASH_BANKS || (fp = &flash_info[bank - 1])->flash_id == FLASH_UNKNOWN) return -1; str = p; if ((p = strchr (str, '-')) != NULL) *p++ = '\0'; first = simple_strtoul (str, &ep, 10); if (ep == str || *ep != '\0' || first >= fp->sector_count) return -1; if (p != NULL) { last = simple_strtoul (p, &ep, 10); 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 < CONFIG_SYS_MAX_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 = simple_strtoul(arg1, &ep, 16); if (ep == arg1 || *ep != '\0') return -1; len_used = 0; if (arg2 && *arg2 == '+'){ len_used = 1; ++arg2; } *addr_last = simple_strtoul(arg2, &ep, 16); 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 < CONFIG_SYS_MAX_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 < CONFIG_SYS_MAX_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_SYS_NO_FLASH */ static int do_flinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { #ifndef CONFIG_SYS_NO_FLASH ulong bank; #endif #ifdef CONFIG_HAS_DATAFLASH dataflash_print_info(); #endif #ifndef CONFIG_SYS_NO_FLASH if (argc == 1) { /* print info for all FLASH banks */ for (bank=0; bank <CONFIG_SYS_MAX_FLASH_BANKS; ++bank) { printf ("\nBank # %ld: ", bank+1); flash_print_info (&flash_info[bank]); } return 0; } bank = simple_strtoul(argv[1], NULL, 16); if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) { printf ("Only FLASH Banks # 1 ... # %d supported\n", CONFIG_SYS_MAX_FLASH_BANKS); return 1; } printf ("\nBank # %ld: ", bank); flash_print_info (&flash_info[bank-1]); #endif /* CONFIG_SYS_NO_FLASH */ return 0; } static int do_flerase(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { #ifndef CONFIG_SYS_NO_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<=CONFIG_SYS_MAX_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; } if ((n = abbrev_spec(argv[1], &info, §_first, §_last)) != 0) { 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 = simple_strtoul(argv[2], NULL, 16); if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) { printf ("Only FLASH Banks # 1 ... # %d supported\n", CONFIG_SYS_MAX_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_SYS_NO_FLASH */ } #ifndef CONFIG_SYS_NO_FLASH int flash_sect_erase (ulong addr_first, ulong addr_last) { flash_info_t *info; ulong bank; int s_first[CONFIG_SYS_MAX_FLASH_BANKS], s_last[CONFIG_SYS_MAX_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 < CONFIG_SYS_MAX_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_SYS_NO_FLASH */ static int do_protect(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { int rcode = 0; #ifndef CONFIG_SYS_NO_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_SYS_NO_FLASH */ #ifdef CONFIG_HAS_DATAFLASH int status; #endif #if !defined(CONFIG_SYS_NO_FLASH) || defined(CONFIG_HAS_DATAFLASH) int p; ulong addr_first, addr_last; #endif if (argc < 3) return CMD_RET_USAGE; #if !defined(CONFIG_SYS_NO_FLASH) || defined(CONFIG_HAS_DATAFLASH) 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_HAS_DATAFLASH if ((strcmp(argv[2], "all") != 0) && (strcmp(argv[2], "bank") != 0)) { addr_first = simple_strtoul(argv[2], NULL, 16); addr_last = simple_strtoul(argv[3], NULL, 16); if (addr_dataflash(addr_first) && addr_dataflash(addr_last)) { status = dataflash_real_protect(p,addr_first,addr_last); if (status < 0){ puts ("Bad DataFlash sector specification\n"); return 1; } printf("%sProtect %d DataFlash Sectors\n", p ? "" : "Un-", status); return 0; } } #endif #ifndef CONFIG_SYS_NO_FLASH if (strcmp(argv[2], "all") == 0) { for (bank=1; bank<=CONFIG_SYS_MAX_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; } if ((n = abbrev_spec(argv[2], &info, §_first, §_last)) != 0) { 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 = simple_strtoul(argv[3], NULL, 16); if ((bank < 1) || (bank > CONFIG_SYS_MAX_FLASH_BANKS)) { printf ("Only FLASH Banks # 1 ... # %d supported\n", CONFIG_SYS_MAX_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_SYS_NO_FLASH */ return rcode; } #ifndef CONFIG_SYS_NO_FLASH int flash_sect_protect (int p, ulong addr_first, ulong addr_last) { flash_info_t *info; ulong bank; int s_first[CONFIG_SYS_MAX_FLASH_BANKS], s_last[CONFIG_SYS_MAX_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 < CONFIG_SYS_MAX_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_SYS_NO_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