| /* |
| * (C) Copyright 2001 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * |
| * See file CREDITS for list of people who contributed to this |
| * project. |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License as |
| * published by the Free Software Foundation; either version 2 of |
| * the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| * MA 02111-1307 USA |
| */ |
| |
| #include <common.h> |
| #include <mpc8xx.h> |
| |
| flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */ |
| |
| #if defined(CONFIG_ENV_IS_IN_FLASH) |
| # ifndef CONFIG_ENV_ADDR |
| # define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET) |
| # endif |
| # ifndef CONFIG_ENV_SIZE |
| # define CONFIG_ENV_SIZE CONFIG_ENV_SECT_SIZE |
| # endif |
| # ifndef CONFIG_ENV_SECT_SIZE |
| # define CONFIG_ENV_SECT_SIZE CONFIG_ENV_SIZE |
| # endif |
| #endif |
| |
| /*---------------------------------------------------------------------*/ |
| #undef DEBUG_FLASH |
| |
| #ifdef DEBUG_FLASH |
| #define DEBUGF(fmt,args...) printf(fmt ,##args) |
| #else |
| #define DEBUGF(fmt,args...) |
| #endif |
| /*---------------------------------------------------------------------*/ |
| |
| /*----------------------------------------------------------------------- |
| * Functions |
| */ |
| static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
| static int write_word (flash_info_t *info, ulong dest, ulong data); |
| static void flash_get_offsets (ulong base, flash_info_t *info); |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| unsigned long flash_init (void) |
| { |
| volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR; |
| volatile memctl8xx_t *memctl = &immap->im_memctl; |
| unsigned long size_b0, size_b1; |
| int i; |
| |
| /* Init: no FLASHes known */ |
| for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) { |
| flash_info[i].flash_id = FLASH_UNKNOWN; |
| } |
| |
| /* Static FLASH Bank configuration here - FIXME XXX */ |
| |
| DEBUGF("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM); |
| |
| 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); |
| } |
| |
| #if defined(FLASH_BASE1_PRELIM) && (FLASH_BASE1_PRELIM != 0) |
| DEBUGF("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM); |
| |
| size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]); |
| |
| if (size_b1 > size_b0) { |
| printf ("## ERROR: " |
| "Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n", |
| size_b1, size_b1<<20, |
| size_b0, size_b0<<20 |
| ); |
| flash_info[0].flash_id = FLASH_UNKNOWN; |
| flash_info[1].flash_id = FLASH_UNKNOWN; |
| flash_info[0].sector_count = -1; |
| flash_info[1].sector_count = -1; |
| flash_info[0].size = 0; |
| flash_info[1].size = 0; |
| return (0); |
| } |
| #else |
| size_b1 = 0; |
| #endif /* FLASH_BASE1_PRELIM */ |
| |
| DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1); |
| |
| DEBUGF ("## Before remap: " |
| "BR0: 0x%08x OR0: 0x%08x " |
| "BR1: 0x%08x OR1: 0x%08x\n", |
| memctl->memc_br0, memctl->memc_or0, |
| memctl->memc_br1, memctl->memc_or1); |
| |
| /* Remap FLASH according to real size */ |
| memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & OR_AM_MSK); |
| memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | BR_MS_GPCM | BR_V; |
| |
| DEBUGF("## BR0: 0x%08x OR0: 0x%08x\n", |
| memctl->memc_br0, memctl->memc_or0); |
| |
| /* Re-do sizing to get full correct info */ |
| size_b0 = flash_get_size((vu_long *)CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
| |
| flash_get_offsets (CONFIG_SYS_FLASH_BASE, &flash_info[0]); |
| |
| flash_info[0].size = size_b0; |
| |
| #if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
| /* monitor protection ON by default */ |
| flash_protect(FLAG_PROTECT_SET, |
| CONFIG_SYS_MONITOR_BASE, |
| CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, |
| &flash_info[0]); |
| #endif |
| |
| #ifdef CONFIG_ENV_IS_IN_FLASH |
| /* ENV protection ON by default */ |
| flash_protect(FLAG_PROTECT_SET, |
| CONFIG_ENV_ADDR, |
| CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, |
| &flash_info[0]); |
| #endif |
| |
| if (size_b1) { |
| memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b1 & OR_AM_MSK); |
| memctl->memc_br1 = ((CONFIG_SYS_FLASH_BASE + size_b0) & BR_BA_MSK) | |
| BR_MS_GPCM | BR_V; |
| |
| DEBUGF("## BR1: 0x%08x OR1: 0x%08x\n", |
| memctl->memc_br1, memctl->memc_or1); |
| |
| /* Re-do sizing to get full correct info */ |
| size_b1 = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE + size_b0), |
| &flash_info[1]); |
| |
| flash_info[1].size = size_b1; |
| |
| flash_get_offsets (CONFIG_SYS_FLASH_BASE + size_b0, &flash_info[1]); |
| |
| # if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE |
| /* monitor protection ON by default */ |
| flash_protect(FLAG_PROTECT_SET, |
| CONFIG_SYS_MONITOR_BASE, |
| CONFIG_SYS_MONITOR_BASE+monitor_flash_len-1, |
| &flash_info[1]); |
| # endif |
| |
| # ifdef CONFIG_ENV_IS_IN_FLASH |
| /* ENV protection ON by default */ |
| flash_protect(FLAG_PROTECT_SET, |
| CONFIG_ENV_ADDR, |
| CONFIG_ENV_ADDR+CONFIG_ENV_SECT_SIZE-1, |
| &flash_info[1]); |
| #endif |
| } else { |
| #ifndef CONFIG_AMX_RAM_EXT |
| memctl->memc_br1 = 0; /* invalidate bank */ |
| memctl->memc_or1 = 0; /* invalidate bank */ |
| #endif |
| |
| DEBUGF("## DISABLE BR1: 0x%08x OR1: 0x%08x\n", |
| memctl->memc_br1, memctl->memc_or1); |
| |
| flash_info[1].flash_id = FLASH_UNKNOWN; |
| flash_info[1].sector_count = -1; |
| flash_info[1].size = 0; |
| } |
| |
| DEBUGF("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1); |
| |
| return (size_b0 + size_b1); |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| static void flash_get_offsets (ulong base, flash_info_t *info) |
| { |
| int i; |
| |
| /* set up sector start address table */ |
| if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM040) { |
| /* set sector offsets for uniform sector type */ |
| for (i = 0; i < info->sector_count; i++) { |
| info->start[i] = base + (i * 0x00040000); |
| } |
| } else if (info->flash_id & FLASH_BTYPE) { |
| /* set sector offsets for bottom boot block type */ |
| info->start[0] = base + 0x00000000; |
| info->start[1] = base + 0x00008000; |
| info->start[2] = base + 0x0000C000; |
| info->start[3] = base + 0x00010000; |
| for (i = 4; i < info->sector_count; i++) { |
| info->start[i] = base + (i * 0x00020000) - 0x00060000; |
| } |
| } else { |
| /* set sector offsets for top boot block type */ |
| i = info->sector_count - 1; |
| info->start[i--] = base + info->size - 0x00008000; |
| info->start[i--] = base + info->size - 0x0000C000; |
| info->start[i--] = base + info->size - 0x00010000; |
| for (; i >= 0; i--) { |
| info->start[i] = base + i * 0x00020000; |
| } |
| } |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| void flash_print_info (flash_info_t *info) |
| { |
| int i; |
| |
| 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 ("AMD "); break; |
| case FLASH_MAN_FUJ: printf ("FUJITSU "); break; |
| case FLASH_MAN_BM: printf ("BRIGHT MICRO "); break; |
| default: printf ("Unknown Vendor "); break; |
| } |
| |
| switch (info->flash_id & FLASH_TYPEMASK) { |
| case FLASH_AM040: printf ("29F040 or 29LV040 (4 Mbit, uniform sectors)\n"); |
| break; |
| case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n"); |
| break; |
| case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n"); |
| break; |
| case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n"); |
| break; |
| case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n"); |
| break; |
| case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n"); |
| break; |
| case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n"); |
| break; |
| case FLASH_AM320B: printf ("AM29LV320B (32 Mbit, bottom boot sect)\n"); |
| break; |
| case FLASH_AM320T: printf ("AM29LV320T (32 Mbit, top boot sector)\n"); |
| break; |
| default: printf ("Unknown Chip Type\n"); |
| break; |
| } |
| |
| printf (" Size: %ld MB in %d Sectors\n", |
| info->size >> 20, info->sector_count); |
| |
| printf (" Sector Start Addresses:"); |
| for (i=0; i<info->sector_count; ++i) { |
| if ((i % 5) == 0) |
| printf ("\n "); |
| printf (" %08lX%s", |
| info->start[i], |
| info->protect[i] ? " (RO)" : " " |
| ); |
| } |
| printf ("\n"); |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| /* |
| * The following code cannot be run from FLASH! |
| */ |
| |
| static ulong flash_get_size (vu_long *addr, flash_info_t *info) |
| { |
| short i; |
| ulong value; |
| ulong base = (ulong)addr; |
| |
| /* Write auto select command: read Manufacturer ID */ |
| addr[0x0555] = 0x00AA00AA; |
| addr[0x02AA] = 0x00550055; |
| addr[0x0555] = 0x00900090; |
| |
| value = addr[0]; |
| |
| DEBUGF("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value); |
| |
| switch (value) { |
| case AMD_MANUFACT: |
| info->flash_id = FLASH_MAN_AMD; |
| break; |
| case FUJ_MANUFACT: |
| info->flash_id = FLASH_MAN_FUJ; |
| break; |
| default: |
| info->flash_id = FLASH_UNKNOWN; |
| info->sector_count = 0; |
| info->size = 0; |
| return (0); /* no or unknown flash */ |
| } |
| |
| value = addr[1]; /* device ID */ |
| |
| DEBUGF("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value); |
| |
| switch (value) { |
| case AMD_ID_F040B: |
| info->flash_id += FLASH_AM040; |
| info->sector_count = 8; |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| |
| case AMD_ID_LV400T: |
| info->flash_id += FLASH_AM400T; |
| info->sector_count = 11; |
| info->size = 0x00100000; |
| break; /* => 1 MB */ |
| |
| case AMD_ID_LV400B: |
| info->flash_id += FLASH_AM400B; |
| info->sector_count = 11; |
| info->size = 0x00100000; |
| break; /* => 1 MB */ |
| |
| case AMD_ID_LV800T: |
| info->flash_id += FLASH_AM800T; |
| info->sector_count = 19; |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| |
| case AMD_ID_LV800B: |
| info->flash_id += FLASH_AM800B; |
| info->sector_count = 19; |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| |
| case AMD_ID_LV160T: |
| info->flash_id += FLASH_AM160T; |
| info->sector_count = 35; |
| info->size = 0x00400000; |
| break; /* => 4 MB */ |
| |
| case AMD_ID_LV160B: |
| info->flash_id += FLASH_AM160B; |
| info->sector_count = 35; |
| info->size = 0x00400000; |
| break; /* => 4 MB */ |
| #if 0 /* enable when device IDs are available */ |
| case AMD_ID_LV320T: |
| info->flash_id += FLASH_AM320T; |
| info->sector_count = 67; |
| info->size = 0x00800000; |
| break; /* => 8 MB */ |
| |
| case AMD_ID_LV320B: |
| info->flash_id += FLASH_AM320B; |
| info->sector_count = 67; |
| info->size = 0x00800000; |
| break; /* => 8 MB */ |
| #endif |
| default: |
| info->flash_id = FLASH_UNKNOWN; |
| return (0); /* => no or unknown flash */ |
| } |
| |
| /* set up sector start address table */ |
| if (info->flash_id & FLASH_BTYPE) { |
| /* set sector offsets for bottom boot block type */ |
| info->start[0] = base + 0x00000000; |
| info->start[1] = base + 0x00008000; |
| info->start[2] = base + 0x0000C000; |
| info->start[3] = base + 0x00010000; |
| for (i = 4; i < info->sector_count; i++) { |
| info->start[i] = base + (i * 0x00020000) - 0x00060000; |
| } |
| } else { |
| /* set sector offsets for top boot block type */ |
| i = info->sector_count - 1; |
| info->start[i--] = base + info->size - 0x00008000; |
| info->start[i--] = base + info->size - 0x0000C000; |
| info->start[i--] = base + info->size - 0x00010000; |
| for (; i >= 0; i--) { |
| info->start[i] = base + i * 0x00020000; |
| } |
| } |
| |
| /* check for protected sectors */ |
| for (i = 0; i < info->sector_count; i++) { |
| /* read sector protection at sector address, (A7 .. A0) = 0x02 */ |
| /* D0 = 1 if protected */ |
| addr = (volatile unsigned long *)(info->start[i]); |
| info->protect[i] = addr[2] & 1; |
| } |
| |
| /* |
| * Prevent writes to uninitialized FLASH. |
| */ |
| if (info->flash_id != FLASH_UNKNOWN) { |
| addr = (volatile unsigned long *)info->start[0]; |
| |
| *addr = 0x00F000F0; /* reset bank */ |
| } |
| |
| return (info->size); |
| } |
| |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| int flash_erase (flash_info_t *info, int s_first, int s_last) |
| { |
| vu_long *addr = (vu_long*)(info->start[0]); |
| int flag, prot, sect, l_sect; |
| ulong start, now, last; |
| |
| 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; |
| } |
| |
| if ((info->flash_id == FLASH_UNKNOWN) || |
| (info->flash_id > FLASH_AMD_COMP)) { |
| printf ("Can't erase unknown flash type %08lx - aborted\n", |
| info->flash_id); |
| return 1; |
| } |
| |
| 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"); |
| } |
| |
| l_sect = -1; |
| |
| /* Disable interrupts which might cause a timeout here */ |
| flag = disable_interrupts(); |
| |
| addr[0x0555] = 0x00AA00AA; |
| addr[0x02AA] = 0x00550055; |
| addr[0x0555] = 0x00800080; |
| addr[0x0555] = 0x00AA00AA; |
| addr[0x02AA] = 0x00550055; |
| |
| /* Start erase on unprotected sectors */ |
| for (sect = s_first; sect<=s_last; sect++) { |
| if (info->protect[sect] == 0) { /* not protected */ |
| addr = (vu_long*)(info->start[sect]); |
| addr[0] = 0x00300030; |
| l_sect = sect; |
| } |
| } |
| |
| /* re-enable interrupts if necessary */ |
| if (flag) |
| enable_interrupts(); |
| |
| /* wait at least 80us - let's wait 1 ms */ |
| udelay (1000); |
| |
| /* |
| * We wait for the last triggered sector |
| */ |
| if (l_sect < 0) |
| goto DONE; |
| |
| start = get_timer (0); |
| last = start; |
| addr = (vu_long*)(info->start[l_sect]); |
| while ((addr[0] & 0x00800080) != 0x00800080) { |
| if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
| printf ("Timeout\n"); |
| return 1; |
| } |
| /* show that we're waiting */ |
| if ((now - last) > 1000) { /* every second */ |
| putc ('.'); |
| last = now; |
| } |
| } |
| |
| DONE: |
| /* reset to read mode */ |
| addr = (volatile unsigned long *)info->start[0]; |
| addr[0] = 0x00F000F0; /* reset bank */ |
| |
| printf (" done\n"); |
| return 0; |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Copy memory to flash, returns: |
| * 0 - OK |
| * 1 - write timeout |
| * 2 - Flash not erased |
| */ |
| |
| int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| { |
| ulong cp, wp, data; |
| int i, l, rc; |
| |
| wp = (addr & ~3); /* get lower word aligned address */ |
| |
| /* |
| * 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<4 && cnt>0; ++i) { |
| data = (data << 8) | *src++; |
| --cnt; |
| ++cp; |
| } |
| for (; cnt==0 && i<4; ++i, ++cp) { |
| data = (data << 8) | (*(uchar *)cp); |
| } |
| |
| if ((rc = write_word(info, wp, data)) != 0) { |
| return (rc); |
| } |
| wp += 4; |
| } |
| |
| /* |
| * handle word aligned part |
| */ |
| while (cnt >= 4) { |
| data = 0; |
| for (i=0; i<4; ++i) { |
| data = (data << 8) | *src++; |
| } |
| if ((rc = write_word(info, wp, data)) != 0) { |
| return (rc); |
| } |
| wp += 4; |
| cnt -= 4; |
| } |
| |
| 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_word(info, wp, data)); |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Write a word to Flash, returns: |
| * 0 - OK |
| * 1 - write timeout |
| * 2 - Flash not erased |
| */ |
| static int write_word (flash_info_t *info, ulong dest, ulong data) |
| { |
| vu_long *addr = (vu_long*)(info->start[0]); |
| ulong start; |
| int flag; |
| |
| /* Check if Flash is (sufficiently) erased */ |
| if ((*((vu_long *)dest) & data) != data) { |
| return (2); |
| } |
| /* Disable interrupts which might cause a timeout here */ |
| flag = disable_interrupts(); |
| |
| addr[0x0555] = 0x00AA00AA; |
| addr[0x02AA] = 0x00550055; |
| addr[0x0555] = 0x00A000A0; |
| |
| *((vu_long *)dest) = data; |
| |
| /* re-enable interrupts if necessary */ |
| if (flag) |
| enable_interrupts(); |
| |
| /* data polling for D7 */ |
| start = get_timer (0); |
| while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) { |
| if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
| return (1); |
| } |
| } |
| return (0); |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |