diff options
Diffstat (limited to 'board/w7o/flash.c')
| -rw-r--r-- | board/w7o/flash.c | 927 |
1 files changed, 0 insertions, 927 deletions
diff --git a/board/w7o/flash.c b/board/w7o/flash.c deleted file mode 100644 index 26bddc4235..0000000000 --- a/board/w7o/flash.c +++ /dev/null @@ -1,927 +0,0 @@ -/* - * (C) Copyright 2001 - * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com. - * Based on code by: - * Wolfgang Denk, DENX Software Engineering, wd@denx.de. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <asm/ppc4xx.h> -#include <asm/processor.h> - -#include <watchdog.h> - -/* info for FLASH chips */ -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -/* - * Functions - */ -static ulong flash_get_size(vu_long *addr, flash_info_t *info); -static int write_word8(flash_info_t *info, ulong dest, ulong data); -static int write_word32(flash_info_t *info, ulong dest, ulong data); -static void flash_get_offsets(ulong base, flash_info_t *info); - -unsigned long flash_init(void) -{ - int i; - unsigned long size_b0, base_b0; - unsigned long size_b1; - - /* Init: no FLASHes known */ - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) - flash_info[i].flash_id = FLASH_UNKNOWN; - - /* Get Size of Boot and Main Flashes */ - size_b0 = flash_get_size((vu_long *) FLASH_BASE0_PRELIM, - &flash_info[0]); - if (flash_info[0].flash_id == FLASH_UNKNOWN) { - printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", - size_b0, size_b0 << 20); - return 0; - } - size_b1 = - flash_get_size((vu_long *) FLASH_BASE1_PRELIM, - &flash_info[1]); - if (flash_info[1].flash_id == FLASH_UNKNOWN) { - printf("## Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", - size_b1, size_b1 << 20); - return 0; - } - - /* Calculate base addresses */ - base_b0 = -size_b0; - - /* Setup offsets for Boot Flash */ - flash_get_offsets(base_b0, &flash_info[0]); - - /* Protect board level data */ - (void) flash_protect(FLAG_PROTECT_SET, - base_b0, - flash_info[0].start[1] - 1, &flash_info[0]); - - /* Monitor protection ON by default */ - (void) flash_protect(FLAG_PROTECT_SET, - base_b0 + size_b0 - monitor_flash_len, - base_b0 + size_b0 - 1, &flash_info[0]); - - /* Protect the FPGA image */ - (void) flash_protect(FLAG_PROTECT_SET, - FLASH_BASE1_PRELIM, - FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN - - 1, &flash_info[1]); - - /* Protect the default boot image */ - (void) flash_protect(FLAG_PROTECT_SET, - FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN, - FLASH_BASE1_PRELIM + CONFIG_SYS_FPGA_IMAGE_LEN + - 0x600000 - 1, &flash_info[1]); - - /* Setup offsets for Main Flash */ - flash_get_offsets(FLASH_BASE1_PRELIM, &flash_info[1]); - - return size_b0 + size_b1; -} - -static void flash_get_offsets(ulong base, flash_info_t *info) -{ - int i; - - /* set up sector start address table - FOR BOOT ROM ONLY!!! */ - if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { - for (i = 0; i < info->sector_count; i++) - info->start[i] = base + (i * 0x00010000); - } -} /* end flash_get_offsets() */ - -void flash_print_info(flash_info_t *info) -{ - int i; - int k; - int size; - int erased; - volatile unsigned long *flash; - - if (info->flash_id == FLASH_UNKNOWN) { - printf("missing or unknown FLASH type\n"); - return; - } - - switch (info->flash_id & FLASH_VENDMASK) { - case FLASH_MAN_AMD: - printf("1 x AMD "); - break; - case FLASH_MAN_STM: - printf("1 x STM "); - break; - case FLASH_MAN_INTEL: - printf("2 x Intel "); - break; - default: - printf("Unknown Vendor "); - } - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_AM040: - if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD) - printf("AM29LV040 (4096 Kbit, uniform sector size)\n"); - else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) - printf("M29W040B (4096 Kbit, uniform block size)\n"); - else - printf("UNKNOWN 29x040x (4096 Kbit, uniform sector size)\n"); - break; - case FLASH_28F320J3A: - printf("28F320J3A (32 Mbit = 128K x 32)\n"); - break; - case FLASH_28F640J3A: - printf("28F640J3A (64 Mbit = 128K x 64)\n"); - break; - case FLASH_28F128J3A: - printf("28F128J3A (128 Mbit = 128K x 128)\n"); - break; - default: - printf("Unknown Chip Type\n"); - } - - if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_STM) { - printf(" Size: %ld KB in %d Blocks\n", - info->size >> 10, info->sector_count); - } else { - printf(" Size: %ld KB in %d Sectors\n", - info->size >> 10, info->sector_count); - } - - printf(" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; ++i) { - /* - * Check if whole sector is erased - */ - if (i != (info->sector_count - 1)) - size = info->start[i + 1] - info->start[i]; - else - size = info->start[0] + info->size - info->start[i]; - erased = 1; - flash = (volatile unsigned long *) info->start[i]; - size = size >> 2; /* divide by 4 for longword access */ - for (k = 0; k < size; k++) { - if (*flash++ != 0xffffffff) { - erased = 0; - break; - } - } - - if ((i % 5) == 0) - printf("\n "); - printf(" %08lX%s%s", - info->start[i], - erased ? " E" : " ", - info->protect[i] ? "RO " : " "); - } - printf("\n"); -} /* end flash_print_info() */ - -/* - * The following code cannot be run from FLASH! - */ -static ulong flash_get_size(vu_long *addr, flash_info_t *info) -{ - short i; - ulong base = (ulong) addr; - - /* Setup default type */ - info->flash_id = FLASH_UNKNOWN; - info->sector_count = 0; - info->size = 0; - - /* Test for Boot Flash */ - if (base == FLASH_BASE0_PRELIM) { - unsigned char value; - volatile unsigned char *addr2 = (unsigned char *) addr; - - /* Write auto select command: read Manufacturer ID */ - *(addr2 + 0x555) = 0xaa; - *(addr2 + 0x2aa) = 0x55; - *(addr2 + 0x555) = 0x90; - - /* Manufacture ID */ - value = *addr2; - switch (value) { - case (unsigned char) AMD_MANUFACT: - info->flash_id = FLASH_MAN_AMD; - break; - case (unsigned char) STM_MANUFACT: - info->flash_id = FLASH_MAN_STM; - break; - default: - *addr2 = 0xf0; /* no or unknown flash */ - return 0; - } - - /* Device ID */ - value = *(addr2 + 1); - switch (value) { - case (unsigned char) AMD_ID_LV040B: - case (unsigned char) STM_ID_29W040B: - info->flash_id += FLASH_AM040; - info->sector_count = 8; - info->size = 0x00080000; - break; /* => 512Kb */ - default: - *addr2 = 0xf0; /* => no or unknown flash */ - return 0; - } - } else { /* MAIN Flash */ - unsigned long value; - volatile unsigned long *addr2 = (unsigned long *) addr; - - /* Write auto select command: read Manufacturer ID */ - *addr2 = 0x90909090; - - /* Manufacture ID */ - value = *addr2; - switch (value) { - case (unsigned long) INTEL_MANUFACT: - info->flash_id = FLASH_MAN_INTEL; - break; - default: - *addr2 = 0xff; /* no or unknown flash */ - return 0; - } - - /* Device ID - This shit is interleaved... */ - value = *(addr2 + 1); - switch (value) { - case (unsigned long) INTEL_ID_28F320J3A: - info->flash_id += FLASH_28F320J3A; - info->sector_count = 32; - info->size = 0x00400000 * 2; - break; /* => 2 X 4 MB */ - case (unsigned long) INTEL_ID_28F640J3A: - info->flash_id += FLASH_28F640J3A; - info->sector_count = 64; - info->size = 0x00800000 * 2; - break; /* => 2 X 8 MB */ - case (unsigned long) INTEL_ID_28F128J3A: - info->flash_id += FLASH_28F128J3A; - info->sector_count = 128; - info->size = 0x01000000 * 2; - break; /* => 2 X 16 MB */ - default: - *addr2 = 0xff; /* => no or unknown flash */ - } - } - - /* Make sure we don't exceed CONFIG_SYS_MAX_FLASH_SECT */ - if (info->sector_count > CONFIG_SYS_MAX_FLASH_SECT) { - printf("** ERROR: sector count %d > max (%d) **\n", - info->sector_count, CONFIG_SYS_MAX_FLASH_SECT); - info->sector_count = CONFIG_SYS_MAX_FLASH_SECT; - } - - /* set up sector start address table */ - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_AM040: - for (i = 0; i < info->sector_count; i++) - info->start[i] = base + (i * 0x00010000); - break; - case FLASH_28F320J3A: - case FLASH_28F640J3A: - case FLASH_28F128J3A: - for (i = 0; i < info->sector_count; i++) - info->start[i] = base + - (i * 0x00020000 * 2); /* 2 Banks */ - break; - } - - /* Test for Boot Flash */ - if (base == FLASH_BASE0_PRELIM) { - volatile unsigned char *addr2; - - /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) { - /* - * read sector protection at sector address, - * (AX .. A0) = 0x02 - * D0 = 1 if protected - */ - addr2 = (volatile unsigned char *) (info->start[i]); - info->protect[i] = *(addr2 + 2) & 1; - } - - /* Restore read mode */ - *(unsigned char *) base = 0xF0; /* Reset NORMAL Flash */ - } else { /* Main Flash */ - volatile unsigned long *addr2; - - /* check for protected sectors */ - for (i = 0; i < info->sector_count; i++) { - /* - * read sector protection at sector address, - * (AX .. A0) = 0x02 - * D0 = 1 if protected - */ - addr2 = (volatile unsigned long *) (info->start[i]); - info->protect[i] = *(addr2 + 2) & 0x1; - } - - /* Restore read mode */ - *(unsigned long *) base = 0xFFFFFFFF; /* Reset Flash */ - } - - return info->size; -} /* end flash_get_size() */ - -static int wait_for_DQ7(ulong addr, uchar cmp_val, ulong tout) -{ - int i; - - volatile uchar *vaddr = (uchar *) addr; - - /* Loop X times */ - for (i = 1; i <= (100 * tout); i++) { /* Wait up to tout ms */ - udelay(10); - /* Pause 10 us */ - - /* Check for completion */ - if ((vaddr[0] & 0x80) == (cmp_val & 0x80)) - return 0; - - /* KEEP THE LUSER HAPPY - Print a dot every 1.1 seconds */ - if (!(i % 110000)) - putc('.'); - - /* Kick the dog if needed */ - WATCHDOG_RESET(); - } - - return 1; -} /* wait_for_DQ7() */ - -static int flash_erase8(flash_info_t *info, int s_first, int s_last) -{ - int tcode, rcode = 0; - volatile uchar *addr = (uchar *) (info->start[0]); - volatile uchar *sector_addr; - int flag, prot, sect; - - /* Validate arguments */ - if ((s_first < 0) || (s_first > s_last)) { - if (info->flash_id == FLASH_UNKNOWN) - printf("- missing\n"); - else - printf("- no sectors to erase\n"); - return 1; - } - - /* Check for KNOWN flash type */ - if (info->flash_id == FLASH_UNKNOWN) { - printf("Can't erase unknown flash type - aborted\n"); - return 1; - } - - /* Check for protected sectors */ - prot = 0; - for (sect = s_first; sect <= s_last; ++sect) { - if (info->protect[sect]) - prot++; - } - if (prot) { - printf("- Warning: %d protected sectors will not be erased!\n", - prot); - } else { - printf("\n"); - } - - /* Start erase on unprotected sectors */ - for (sect = s_first; sect <= s_last; sect++) { - if (info->protect[sect] == 0) { /* not protected */ - sector_addr = (uchar *) (info->start[sect]); - - if ((info->flash_id & FLASH_VENDMASK) == - FLASH_MAN_STM) - printf("Erasing block %p\n", sector_addr); - else - printf("Erasing sector %p\n", sector_addr); - - /* Disable interrupts which might cause timeout */ - flag = disable_interrupts(); - - *(addr + 0x555) = (uchar) 0xAA; - *(addr + 0x2aa) = (uchar) 0x55; - *(addr + 0x555) = (uchar) 0x80; - *(addr + 0x555) = (uchar) 0xAA; - *(addr + 0x2aa) = (uchar) 0x55; - *sector_addr = (uchar) 0x30; /* sector erase */ - - /* - * Wait for each sector to complete, it's more - * reliable. According to AMD Spec, you must - * issue all erase commands within a specified - * timeout. This has been seen to fail, especially - * if printf()s are included (for debug)!! - * Takes up to 6 seconds. - */ - tcode = wait_for_DQ7((ulong) sector_addr, 0x80, 6000); - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* Make sure we didn't timeout */ - if (tcode) { - printf("Timeout\n"); - rcode = 1; - } - } - } - - /* wait at least 80us - let's wait 1 ms */ - udelay(1000); - - /* reset to read mode */ - addr = (uchar *) info->start[0]; - *addr = (uchar) 0xF0; /* reset bank */ - - printf(" done\n"); - return rcode; -} /* end flash_erase8() */ - -static int flash_erase32(flash_info_t *info, int s_first, int s_last) -{ - int flag, sect; - ulong start, now, last; - int prot = 0; - - /* Validate arguments */ - if ((s_first < 0) || (s_first > s_last)) { - if (info->flash_id == FLASH_UNKNOWN) - printf("- missing\n"); - else - printf("- no sectors to erase\n"); - return 1; - } - - /* Check for KNOWN flash type */ - if ((info->flash_id & FLASH_VENDMASK) != FLASH_MAN_INTEL) { - printf("Can erase only Intel flash types - aborted\n"); - return 1; - } - - /* Check for protected sectors */ - for (sect = s_first; sect <= s_last; ++sect) { - if (info->protect[sect]) - prot++; - } - if (prot) { - printf("- Warning: %d protected sectors will not be erased!\n", - prot); - } else { - printf("\n"); - } - - start = get_timer(0); - last = start; - /* Start erase on unprotected sectors */ - for (sect = s_first; sect <= s_last; sect++) { - WATCHDOG_RESET(); - if (info->protect[sect] == 0) { /* not protected */ - vu_long *addr = (vu_long *) (info->start[sect]); - unsigned long status; - - /* Disable interrupts which might cause a timeout */ - flag = disable_interrupts(); - - *addr = 0x00500050; /* clear status register */ - *addr = 0x00200020; /* erase setup */ - *addr = 0x00D000D0; /* erase confirm */ - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* Wait at least 80us - let's wait 1 ms */ - udelay(1000); - - while (((status = *addr) & 0x00800080) != 0x00800080) { - now = get_timer(start); - if (now > CONFIG_SYS_FLASH_ERASE_TOUT) { - printf("Timeout\n"); - /* suspend erase */ - *addr = 0x00B000B0; - /* reset to read mode */ - *addr = 0x00FF00FF; - return 1; - } - - /* - * show that we're waiting - * every second (?) - */ - if ((now - last) > 990) { - putc('.'); - last = now; - } - } - *addr = 0x00FF00FF; /* reset to read mode */ - } - } - printf(" done\n"); - return 0; -} - -int flash_erase(flash_info_t *info, int s_first, int s_last) -{ - if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) - return flash_erase8(info, s_first, s_last); - else - return flash_erase32(info, s_first, s_last); -} - -/* - * Copy memory to flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ -static int write_buff8(flash_info_t *info, uchar *src, ulong addr, - ulong cnt) -{ - ulong cp, wp, data; - ulong start; - int i, l, rc; - - start = get_timer(0); - - wp = (addr & ~3); /* get lower word - aligned address */ - - /* - * handle unaligned start bytes - */ - l = addr - wp; - if (l != 0) { - data = 0; - for (i = 0, cp = wp; i < l; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - for (; i < 4 && cnt > 0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - - for (; cnt == 0 && i < 4; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - rc = write_word8(info, wp, data); - if (rc != 0) - return rc; - - wp += 4; - } - - /* - * handle word aligned part - */ - while (cnt >= 4) { - data = 0; - for (i = 0; i < 4; ++i) - data = (data << 8) | *src++; - - rc = write_word8(info, wp, data); - if (rc != 0) - return rc; - - wp += 4; - cnt -= 4; - if (get_timer(start) > 1000) { /* every second */ - WATCHDOG_RESET(); - putc('.'); - start = get_timer(0); - } - } - - if (cnt == 0) - return 0; - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - - for (; i < 4; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - return write_word8(info, wp, data); -} - -#define FLASH_WIDTH 4 /* flash bus width in bytes */ -static int write_buff32(flash_info_t *info, uchar *src, ulong addr, - ulong cnt) -{ - ulong cp, wp, data; - int i, l, rc; - ulong start; - - start = get_timer(0); - - if (info->flash_id == FLASH_UNKNOWN) - return 4; - - /* get lower FLASH_WIDTH aligned address */ - wp = (addr & ~(FLASH_WIDTH - 1)); - - /* - * handle unaligned start bytes - */ - if ((l = addr - wp) != 0) { - data = 0; - for (i = 0, cp = wp; i < l; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - for (; i < FLASH_WIDTH && cnt > 0; ++i) { - data = (data << 8) | *src++; - --cnt; - ++cp; - } - - for (; cnt == 0 && i < FLASH_WIDTH; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - rc = write_word32(info, wp, data); - if (rc != 0) - return rc; - - wp += FLASH_WIDTH; - } - - /* - * handle FLASH_WIDTH aligned part - */ - while (cnt >= FLASH_WIDTH) { - data = 0; - for (i = 0; i < FLASH_WIDTH; ++i) - data = (data << 8) | *src++; - - rc = write_word32(info, wp, data); - if (rc != 0) - return rc; - - wp += FLASH_WIDTH; - cnt -= FLASH_WIDTH; - if (get_timer(start) > 990) { /* every second */ - putc('.'); - start = get_timer(0); - } - } - - if (cnt == 0) - return 0; - - /* - * handle unaligned tail bytes - */ - data = 0; - for (i = 0, cp = wp; i < FLASH_WIDTH && cnt > 0; ++i, ++cp) { - data = (data << 8) | *src++; - --cnt; - } - - for (; i < FLASH_WIDTH; ++i, ++cp) - data = (data << 8) | (*(uchar *) cp); - - return write_word32(info, wp, data); -} - -int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt) -{ - int retval; - - if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) - retval = write_buff8(info, src, addr, cnt); - else - retval = write_buff32(info, src, addr, cnt); - - return retval; -} - -/* - * Write a word to Flash, returns: - * 0 - OK - * 1 - write timeout - * 2 - Flash not erased - */ - -static int write_word8(flash_info_t *info, ulong dest, ulong data) -{ - volatile uchar *addr2 = (uchar *) (info->start[0]); - volatile uchar *dest2 = (uchar *) dest; - volatile uchar *data2 = (uchar *) &data; - int flag; - int i, tcode, rcode = 0; - - /* Check if Flash is (sufficently) erased */ - if ((*((volatile uchar *)dest) & (uchar)data) != (uchar)data) - return 2; - - for (i = 0; i < (4 / sizeof(uchar)); i++) { - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - *(addr2 + 0x555) = (uchar) 0xAA; - *(addr2 + 0x2aa) = (uchar) 0x55; - *(addr2 + 0x555) = (uchar) 0xA0; - - dest2[i] = data2[i]; - - /* Wait for write to complete, up to 1ms */ - tcode = wait_for_DQ7((ulong) &dest2[i], data2[i], 1); - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - /* Make sure we didn't timeout */ - if (tcode) - rcode = 1; - } - - return rcode; -} - -static int write_word32(flash_info_t *info, ulong dest, ulong data) -{ - vu_long *addr = (vu_long *) dest; - ulong status; - ulong start; - int flag; - - /* Check if Flash is (sufficiently) erased */ - if ((*addr & data) != data) - return 2; - - /* Disable interrupts which might cause a timeout here */ - flag = disable_interrupts(); - - *addr = 0x00400040; /* write setup */ - *addr = data; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - start = get_timer(0); - - while (((status = *addr) & 0x00800080) != 0x00800080) { - WATCHDOG_RESET(); - if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { - *addr = 0x00FF00FF; /* restore read mode */ - return 1; - } - } - - *addr = 0x00FF00FF; /* restore read mode */ - - return 0; -} - -static int _flash_protect(flash_info_t *info, long sector) -{ - int i; - int flag; - ulong status; - int rcode = 0; - volatile long *addr = (long *)sector; - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F320J3A: - case FLASH_28F640J3A: - case FLASH_28F128J3A: - /* Disable interrupts which might cause Flash to timeout */ - flag = disable_interrupts(); - - /* Issue command */ - *addr = 0x00500050L; /* Clear the status register */ - *addr = 0x00600060L; /* Set lock bit setup */ - *addr = 0x00010001L; /* Set lock bit confirm */ - - /* Wait for command completion */ - for (i = 0; i < 10; i++) { /* 75us timeout, wait 100us */ - udelay(10); - if ((*addr & 0x00800080L) == 0x00800080L) - break; - } - - /* Not successful? */ - status = *addr; - if (status != 0x00800080L) { - printf("Protect %x sector failed: %x\n", - (uint) sector, (uint) status); - rcode = 1; - } - - /* Restore read mode */ - *addr = 0x00ff00ffL; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - break; - case FLASH_AM040: /* No soft sector protection */ - break; - } - - /* Turn protection on for this sector */ - for (i = 0; i < info->sector_count; i++) { - if (info->start[i] == sector) { - info->protect[i] = 1; - break; - } - } - - return rcode; -} - -static int _flash_unprotect(flash_info_t *info, long sector) -{ - int i; - int flag; - ulong status; - int rcode = 0; - volatile long *addr = (long *) sector; - - switch (info->flash_id & FLASH_TYPEMASK) { - case FLASH_28F320J3A: - case FLASH_28F640J3A: - case FLASH_28F128J3A: - /* Disable interrupts which might cause Flash to timeout */ - flag = disable_interrupts(); - - *addr = 0x00500050L; /* Clear the status register */ - *addr = 0x00600060L; /* Clear lock bit setup */ - *addr = 0x00D000D0L; /* Clear lock bit confirm */ - - /* Wait for command completion */ - for (i = 0; i < 80; i++) { /* 700ms timeout, wait 800 */ - udelay(10000); /* Delay 10ms */ - if ((*addr & 0x00800080L) == 0x00800080L) - break; - } - - /* Not successful? */ - status = *addr; - if (status != 0x00800080L) { - printf("Un-protect %x sector failed: %x\n", - (uint) sector, (uint) status); - *addr = 0x00ff00ffL; - rcode = 1; - } - - /* restore read mode */ - *addr = 0x00ff00ffL; - - /* re-enable interrupts if necessary */ - if (flag) - enable_interrupts(); - - break; - case FLASH_AM040: /* No soft sector protection */ - break; - } - - /* - * Fix Intel's little red wagon. Reprotect - * sectors that were protected before we undid - * protection on a specific sector. - */ - for (i = 0; i < info->sector_count; i++) { - if (info->start[i] != sector) { - if (info->protect[i]) { - if (_flash_protect(info, info->start[i])) - rcode = 1; - } - } else /* Turn protection off for this sector */ - info->protect[i] = 0; - } - - return rcode; -} - -int flash_real_protect(flash_info_t *info, long sector, int prot) -{ - int rcode; - - if (prot) - rcode = _flash_protect(info, info->start[sector]); - else - rcode = _flash_unprotect(info, info->start[sector]); - - return rcode; -} |