| /* |
| * (C) Copyright 2000 |
| * Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
| * |
| * SPDX-License-Identifier: GPL-2.0+ |
| */ |
| |
| #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 |
| |
| /*----------------------------------------------------------------------- |
| * Functions |
| */ |
| static ulong flash_get_size (vu_long *addr, flash_info_t *info); |
| static int write_data (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; |
| 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 */ |
| |
| 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: " |
| "ID 0x%lx, Size = 0x%08lx = %ld MB\n", |
| flash_info[0].flash_id, |
| size_b0, size_b0<<20); |
| } |
| |
| /* Remap FLASH according to real size */ |
| memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH | (-size_b0 & 0xFFFF8000); |
| memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) | \ |
| BR_MS_GPCM | BR_PS_16 | BR_V; |
| |
| /* 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 |
| |
| return (size_b0); |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| static void flash_get_offsets (ulong base, flash_info_t *info) |
| { |
| int i; |
| |
| if (info->flash_id == FLASH_UNKNOWN) { |
| return; |
| } |
| |
| switch (info->flash_id & FLASH_VENDMASK) { |
| case FLASH_MAN_MT: |
| if (info->flash_id & FLASH_BTYPE) { |
| /* set sector offsets for bottom boot block type */ |
| info->start[0] = base + 0x00000000; |
| info->start[1] = base + 0x00004000; |
| info->start[2] = base + 0x00006000; |
| info->start[3] = base + 0x00008000; |
| for (i = 4; i < info->sector_count; i++) { |
| info->start[i] = base + ((i-3) * 0x00020000); |
| } |
| } else { |
| /* set sector offsets for top boot block type */ |
| i = info->sector_count - 1; |
| info->start[i--] = base + info->size - 0x00004000; |
| info->start[i--] = base + info->size - 0x00006000; |
| info->start[i--] = base + info->size - 0x00008000; |
| for (; i >= 0; i--) { |
| info->start[i] = base + i * 0x00020000; |
| } |
| } |
| return; |
| |
| case FLASH_MAN_SST: |
| for (i = 0; i < info->sector_count; i++) { |
| info->start[i] = base + (i * 0x00002000); |
| } |
| return; |
| |
| case FLASH_MAN_AMD: |
| case FLASH_MAN_FUJ: |
| |
| /* 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; |
| } |
| } |
| return; |
| default: |
| printf ("Don't know sector ofsets for flash type 0x%lx\n", |
| info->flash_id); |
| return; |
| } |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| 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_SST: printf ("SST "); break; |
| case FLASH_MAN_STM: printf ("STM "); break; |
| case FLASH_MAN_MT: printf ("MT "); break; |
| case FLASH_MAN_INTEL: printf ("Intel "); break; |
| default: printf ("Unknown Vendor "); break; |
| } |
| |
| switch (info->flash_id & FLASH_TYPEMASK) { |
| 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; |
| case FLASH_SST200A: printf ("39xF200A (2M = 128K x 16)\n"); |
| break; |
| case FLASH_SST400A: printf ("39xF400A (4M = 256K x 16)\n"); |
| break; |
| case FLASH_SST800A: printf ("39xF800A (8M = 512K x 16)\n"); |
| break; |
| case FLASH_STM800AB: printf ("M29W800AB (8M = 512K x 16)\n"); |
| break; |
| case FLASH_28F008S5: printf ("28F008S5 (1M = 64K x 16)\n"); |
| break; |
| case FLASH_28F400_T: printf ("28F400B3 (4Mbit, top boot sector)\n"); |
| break; |
| case FLASH_28F400_B: printf ("28F400B3 (4Mbit, bottom boot sector)\n"); |
| break; |
| default: printf ("Unknown Chip Type\n"); |
| break; |
| } |
| |
| if (info->size >= (1 << 20)) { |
| i = 20; |
| } else { |
| i = 10; |
| } |
| printf (" Size: %ld %cB in %d Sectors\n", |
| info->size >> i, |
| (i == 20) ? 'M' : 'k', |
| 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"); |
| return; |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| /* |
| * The following code cannot be run from FLASH! |
| */ |
| |
| static ulong flash_get_size (vu_long *addr, flash_info_t *info) |
| { |
| ushort value; |
| vu_short *saddr = (vu_short *)addr; |
| |
| /* Read Manufacturer ID */ |
| saddr[0] = 0x0090; |
| value = saddr[0]; |
| |
| switch (value) { |
| case (AMD_MANUFACT & 0xFFFF): |
| info->flash_id = FLASH_MAN_AMD; |
| break; |
| case (FUJ_MANUFACT & 0xFFFF): |
| info->flash_id = FLASH_MAN_FUJ; |
| break; |
| case (SST_MANUFACT & 0xFFFF): |
| info->flash_id = FLASH_MAN_SST; |
| break; |
| case (STM_MANUFACT & 0xFFFF): |
| info->flash_id = FLASH_MAN_STM; |
| break; |
| case (MT_MANUFACT & 0xFFFF): |
| info->flash_id = FLASH_MAN_MT; |
| break; |
| default: |
| info->flash_id = FLASH_UNKNOWN; |
| info->sector_count = 0; |
| info->size = 0; |
| saddr[0] = 0x00FF; /* restore read mode */ |
| return (0); /* no or unknown flash */ |
| } |
| |
| value = saddr[1]; /* device ID */ |
| |
| switch (value) { |
| case (AMD_ID_LV400T & 0xFFFF): |
| info->flash_id += FLASH_AM400T; |
| info->sector_count = 11; |
| info->size = 0x00100000; |
| break; /* => 1 MB */ |
| |
| case (AMD_ID_LV400B & 0xFFFF): |
| info->flash_id += FLASH_AM400B; |
| info->sector_count = 11; |
| info->size = 0x00100000; |
| break; /* => 1 MB */ |
| |
| case (AMD_ID_LV800T & 0xFFFF): |
| info->flash_id += FLASH_AM800T; |
| info->sector_count = 19; |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| |
| case (AMD_ID_LV800B & 0xFFFF): |
| info->flash_id += FLASH_AM800B; |
| info->sector_count = 19; |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| |
| case (AMD_ID_LV160T & 0xFFFF): |
| info->flash_id += FLASH_AM160T; |
| info->sector_count = 35; |
| info->size = 0x00400000; |
| break; /* => 4 MB */ |
| |
| case (AMD_ID_LV160B & 0xFFFF): |
| 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 & 0xFFFF): |
| info->flash_id += FLASH_AM320T; |
| info->sector_count = 67; |
| info->size = 0x00800000; |
| break; /* => 8 MB */ |
| |
| case (AMD_ID_LV320B & 0xFFFF): |
| info->flash_id += FLASH_AM320B; |
| info->sector_count = 67; |
| info->size = 0x00800000; |
| break; /* => 8 MB */ |
| #endif |
| case (SST_ID_xF200A & 0xFFFF): |
| info->flash_id += FLASH_SST200A; |
| info->sector_count = 64; /* 39xF200A ID ( 2M = 128K x 16 ) */ |
| info->size = 0x00080000; |
| break; |
| case (SST_ID_xF400A & 0xFFFF): |
| info->flash_id += FLASH_SST400A; |
| info->sector_count = 128; /* 39xF400A ID ( 4M = 256K x 16 ) */ |
| info->size = 0x00100000; |
| break; |
| case (SST_ID_xF800A & 0xFFFF): |
| info->flash_id += FLASH_SST800A; |
| info->sector_count = 256; /* 39xF800A ID ( 8M = 512K x 16 ) */ |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| case (STM_ID_x800AB & 0xFFFF): |
| info->flash_id += FLASH_STM800AB; |
| info->sector_count = 19; |
| info->size = 0x00200000; |
| break; /* => 2 MB */ |
| case (MT_ID_28F400_T & 0xFFFF): |
| info->flash_id += FLASH_28F400_T; |
| info->sector_count = 7; |
| info->size = 0x00080000; |
| break; /* => 512 kB */ |
| case (MT_ID_28F400_B & 0xFFFF): |
| info->flash_id += FLASH_28F400_B; |
| info->sector_count = 7; |
| info->size = 0x00080000; |
| break; /* => 512 kB */ |
| default: |
| info->flash_id = FLASH_UNKNOWN; |
| saddr[0] = 0x00FF; /* restore read mode */ |
| return (0); /* => no or unknown flash */ |
| |
| } |
| |
| 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; |
| } |
| |
| saddr[0] = 0x00FF; /* restore read mode */ |
| |
| return (info->size); |
| } |
| |
| |
| /*----------------------------------------------------------------------- |
| */ |
| |
| int flash_erase (flash_info_t *info, int s_first, int s_last) |
| { |
| int flag, prot, 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_VENDMASK) != FLASH_MAN_MT) { |
| printf ("Can erase only MT flash types - aborted\n"); |
| 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"); |
| } |
| |
| start = get_timer (0); |
| last = start; |
| /* Start erase on unprotected sectors */ |
| for (sect = s_first; sect<=s_last; sect++) { |
| if (info->protect[sect] == 0) { /* not protected */ |
| vu_short *addr = (vu_short *)(info->start[sect]); |
| unsigned short status; |
| |
| /* Disable interrupts which might cause a timeout here */ |
| flag = disable_interrupts(); |
| |
| *addr = 0x0050; /* clear status register */ |
| *addr = 0x0020; /* erase setup */ |
| *addr = 0x00D0; /* 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) & 0x0080) != 0x0080) { |
| if ((now=get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
| printf ("Timeout\n"); |
| *addr = 0x00FF; /* reset to read mode */ |
| return 1; |
| } |
| |
| /* show that we're waiting */ |
| if ((now - last) > 1000) { /* every second */ |
| putc ('.'); |
| last = now; |
| } |
| } |
| |
| *addr = 0x00FF; /* reset to read mode */ |
| } |
| } |
| printf (" done\n"); |
| return 0; |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Copy memory to flash, returns: |
| * 0 - OK |
| * 1 - write timeout |
| * 2 - Flash not erased |
| * 4 - Flash not identified |
| */ |
| |
| #define FLASH_WIDTH 2 /* flash bus width in bytes */ |
| |
| int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) |
| { |
| ulong cp, wp, data; |
| int i, l, rc; |
| |
| if (info->flash_id == FLASH_UNKNOWN) { |
| return 4; |
| } |
| |
| wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH 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<FLASH_WIDTH && cnt>0; ++i) { |
| data = (data << 8) | *src++; |
| --cnt; |
| ++cp; |
| } |
| for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) { |
| data = (data << 8) | (*(uchar *)cp); |
| } |
| |
| if ((rc = write_data(info, wp, data)) != 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++; |
| } |
| if ((rc = write_data(info, wp, data)) != 0) { |
| return (rc); |
| } |
| wp += FLASH_WIDTH; |
| cnt -= FLASH_WIDTH; |
| } |
| |
| 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_data(info, wp, data)); |
| } |
| |
| /*----------------------------------------------------------------------- |
| * Write a word to Flash, returns: |
| * 0 - OK |
| * 1 - write timeout |
| * 2 - Flash not erased |
| */ |
| static int write_data (flash_info_t *info, ulong dest, ulong data) |
| { |
| vu_short *addr = (vu_short *)dest; |
| ushort sdata = (ushort)data; |
| ushort status; |
| ulong start; |
| int flag; |
| |
| /* Check if Flash is (sufficiently) erased */ |
| if ((*addr & sdata) != sdata) { |
| return (2); |
| } |
| /* Disable interrupts which might cause a timeout here */ |
| flag = disable_interrupts(); |
| |
| *addr = 0x0040; /* write setup */ |
| *addr = sdata; |
| |
| /* re-enable interrupts if necessary */ |
| if (flag) |
| enable_interrupts(); |
| |
| start = get_timer (0); |
| |
| while (((status = *addr) & 0x0080) != 0x0080) { |
| if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) { |
| *addr = 0x00FF; /* restore read mode */ |
| return (1); |
| } |
| } |
| |
| *addr = 0x00FF; /* restore read mode */ |
| |
| return (0); |
| } |
| |
| /*----------------------------------------------------------------------- |
| */ |