/* * (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 <mpc824x.h> #if defined(CFG_ENV_IS_IN_FLASH) # ifndef CFG_ENV_ADDR # define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET) # endif # ifndef CFG_ENV_SIZE # define CFG_ENV_SIZE CFG_ENV_SECT_SIZE # endif # ifndef CFG_ENV_SECT_SIZE # define CFG_ENV_SECT_SIZE CFG_ENV_SIZE # endif #endif /*---------------------------------------------------------------------*/ #undef DEBUG_FLASH #ifdef DEBUG_FLASH #define DEBUGF(fmt,args...) printf(fmt ,##args) #else #define DEBUGF(fmt,args...) #endif /*---------------------------------------------------------------------*/ flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */ /*----------------------------------------------------------------------- * Functions */ static ulong flash_get_size (vu_char *addr, flash_info_t *info); static int write_data (flash_info_t *info, uchar *dest, uchar data); static void flash_get_offsets (ulong base, flash_info_t *info); /* * don't ask. its stupid, but more than one soul has had to live with this mistake * "swaptab[i]" is the value of "i" with the bits reversed. */ #define MUSENKI_BROKEN_FLASH 1 #ifdef MUSENKI_BROKEN_FLASH unsigned char swaptab[256] = { 0x00, 0x80, 0x40, 0xc0, 0x20, 0xa0, 0x60, 0xe0, 0x10, 0x90, 0x50, 0xd0, 0x30, 0xb0, 0x70, 0xf0, 0x08, 0x88, 0x48, 0xc8, 0x28, 0xa8, 0x68, 0xe8, 0x18, 0x98, 0x58, 0xd8, 0x38, 0xb8, 0x78, 0xf8, 0x04, 0x84, 0x44, 0xc4, 0x24, 0xa4, 0x64, 0xe4, 0x14, 0x94, 0x54, 0xd4, 0x34, 0xb4, 0x74, 0xf4, 0x0c, 0x8c, 0x4c, 0xcc, 0x2c, 0xac, 0x6c, 0xec, 0x1c, 0x9c, 0x5c, 0xdc, 0x3c, 0xbc, 0x7c, 0xfc, 0x02, 0x82, 0x42, 0xc2, 0x22, 0xa2, 0x62, 0xe2, 0x12, 0x92, 0x52, 0xd2, 0x32, 0xb2, 0x72, 0xf2, 0x0a, 0x8a, 0x4a, 0xca, 0x2a, 0xaa, 0x6a, 0xea, 0x1a, 0x9a, 0x5a, 0xda, 0x3a, 0xba, 0x7a, 0xfa, 0x06, 0x86, 0x46, 0xc6, 0x26, 0xa6, 0x66, 0xe6, 0x16, 0x96, 0x56, 0xd6, 0x36, 0xb6, 0x76, 0xf6, 0x0e, 0x8e, 0x4e, 0xce, 0x2e, 0xae, 0x6e, 0xee, 0x1e, 0x9e, 0x5e, 0xde, 0x3e, 0xbe, 0x7e, 0xfe, 0x01, 0x81, 0x41, 0xc1, 0x21, 0xa1, 0x61, 0xe1, 0x11, 0x91, 0x51, 0xd1, 0x31, 0xb1, 0x71, 0xf1, 0x09, 0x89, 0x49, 0xc9, 0x29, 0xa9, 0x69, 0xe9, 0x19, 0x99, 0x59, 0xd9, 0x39, 0xb9, 0x79, 0xf9, 0x05, 0x85, 0x45, 0xc5, 0x25, 0xa5, 0x65, 0xe5, 0x15, 0x95, 0x55, 0xd5, 0x35, 0xb5, 0x75, 0xf5, 0x0d, 0x8d, 0x4d, 0xcd, 0x2d, 0xad, 0x6d, 0xed, 0x1d, 0x9d, 0x5d, 0xdd, 0x3d, 0xbd, 0x7d, 0xfd, 0x03, 0x83, 0x43, 0xc3, 0x23, 0xa3, 0x63, 0xe3, 0x13, 0x93, 0x53, 0xd3, 0x33, 0xb3, 0x73, 0xf3, 0x0b, 0x8b, 0x4b, 0xcb, 0x2b, 0xab, 0x6b, 0xeb, 0x1b, 0x9b, 0x5b, 0xdb, 0x3b, 0xbb, 0x7b, 0xfb, 0x07, 0x87, 0x47, 0xc7, 0x27, 0xa7, 0x67, 0xe7, 0x17, 0x97, 0x57, 0xd7, 0x37, 0xb7, 0x77, 0xf7, 0x0f, 0x8f, 0x4f, 0xcf, 0x2f, 0xaf, 0x6f, 0xef, 0x1f, 0x9f, 0x5f, 0xdf, 0x3f, 0xbf, 0x7f, 0xff, }; #define BS(b) (swaptab[b]) #else #define BS(b) (b) #endif #define BYTEME(x) ((x) & 0xFF) /*----------------------------------------------------------------------- */ unsigned long flash_init (void) { unsigned long size_b0, size_b1; int i; /* Init: no FLASHes known */ for (i=0; i<CFG_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",CFG_FLASH_BASE0_PRELIM); size_b0 = flash_get_size((vu_char *)CFG_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); } DEBUGF("## Get flash bank 2 size @ 0x%08x\n",CFG_FLASH_BASE1_PRELIM); size_b1 = flash_get_size((vu_char *)CFG_FLASH_BASE1_PRELIM, &flash_info[1]); DEBUGF("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1); flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]); flash_info[0].size = size_b0; #if CFG_MONITOR_BASE >= CFG_FLASH_BASE DEBUGF("protect monitor %x @ %x\n", CFG_MONITOR_BASE, monitor_flash_len); /* monitor protection ON by default */ flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE+monitor_flash_len-1, &flash_info[0]); #endif #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ DEBUGF("protect environtment %x @ %x\n", CFG_ENV_ADDR, CFG_ENV_SECT_SIZE); flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1, &flash_info[0]); #endif if (size_b1) { flash_info[1].size = size_b1; flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]); #if CFG_MONITOR_BASE >= CFG_FLASH_BASE /* monitor protection ON by default */ flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE, CFG_MONITOR_BASE+monitor_flash_len-1, &flash_info[1]); #endif #ifdef CFG_ENV_IS_IN_FLASH /* ENV protection ON by default */ flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR, CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1, &flash_info[1]); #endif } else { 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; if (info->flash_id == FLASH_UNKNOWN) { return; } switch (info->flash_id & FLASH_VENDMASK) { case FLASH_MAN_INTEL: for (i = 0; i < info->sector_count; i++) { info->start[i] = base; base += 0x00020000; /* 128k per bank */ } 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_INTEL: printf ("Intel "); break; case FLASH_MAN_MT: printf ("MT "); break; default: printf ("Unknown Vendor "); break; } switch (info->flash_id & FLASH_TYPEMASK) { case FLASH_28F320J3A: printf ("28F320J3A (32Mbit = 128K x 32)\n"); break; case FLASH_28F640J3A: printf ("28F640J3A (64Mbit = 128K x 64)\n"); break; case FLASH_28F128J3A: printf ("28F128J3A (128Mbit = 128K x 128)\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_char *addr, flash_info_t *info) { vu_char manuf, device; addr[0] = BS(0x90); manuf = BS(addr[0]); DEBUGF("Manuf. ID @ 0x%08lx: 0x%08x\n", (vu_char *)addr, manuf); switch (manuf) { case BYTEME(AMD_MANUFACT): info->flash_id = FLASH_MAN_AMD; break; case BYTEME(FUJ_MANUFACT): info->flash_id = FLASH_MAN_FUJ; break; case BYTEME(SST_MANUFACT): info->flash_id = FLASH_MAN_SST; break; case BYTEME(STM_MANUFACT): info->flash_id = FLASH_MAN_STM; break; case BYTEME(INTEL_MANUFACT): info->flash_id = FLASH_MAN_INTEL; break; default: info->flash_id = FLASH_UNKNOWN; info->sector_count = 0; info->size = 0; addr[0] = BS(0xFF); /* restore read mode, (yes, BS is a NOP) */ return 0; /* no or unknown flash */ } device = BS(addr[2]); /* device ID */ DEBUGF("Device ID @ 0x%08x: 0x%08x\n", (&addr[1]), device); switch (device) { case BYTEME(INTEL_ID_28F320J3A): info->flash_id += FLASH_28F320J3A; info->sector_count = 32; info->size = 0x00400000; break; /* => 4 MB */ case BYTEME(INTEL_ID_28F640J3A): info->flash_id += FLASH_28F640J3A; info->sector_count = 64; info->size = 0x00800000; break; /* => 8 MB */ case BYTEME(INTEL_ID_28F128J3A): info->flash_id += FLASH_28F128J3A; info->sector_count = 128; info->size = 0x01000000; break; /* => 16 MB */ default: info->flash_id = FLASH_UNKNOWN; addr[0] = BS(0xFF); /* restore read mode (yes, a NOP) */ return 0; /* => no or unknown flash */ } if (info->sector_count > CFG_MAX_FLASH_SECT) { printf ("** ERROR: sector count %d > max (%d) **\n", info->sector_count, CFG_MAX_FLASH_SECT); info->sector_count = CFG_MAX_FLASH_SECT; } addr[0] = BS(0xFF); /* 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_INTEL) { printf ("Can erase only Intel 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_char *addr = (vu_char *)(info->start[sect]); unsigned long status; /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); *addr = BS(0x50); /* clear status register */ *addr = BS(0x20); /* erase setup */ *addr = BS(0xD0); /* erase confirm */ /* re-enable interrupts if necessary */ if (flag) { enable_interrupts(); } /* wait at least 80us - let's wait 1 ms */ udelay (1000); while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) { if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) { printf ("Timeout\n"); *addr = BS(0xB0); /* suspend erase */ *addr = BS(0xFF); /* reset to read mode */ return 1; } /* show that we're waiting */ if ((now - last) > 1000) { /* every second */ putc ('.'); last = now; } } *addr = BS(0xFF); /* 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 1 /* flash bus width in bytes */ int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) { uchar *wp = (uchar *)addr; int rc; if (info->flash_id == FLASH_UNKNOWN) { return 4; } while (cnt > 0) { if ((rc = write_data(info, wp, *src)) != 0) { return rc; } wp++; src++; cnt--; } return cnt; } /*----------------------------------------------------------------------- * Write a word to Flash, returns: * 0 - OK * 1 - write timeout * 2 - Flash not erased */ static int write_data (flash_info_t *info, uchar *dest, uchar data) { vu_char *addr = (vu_char *)dest; ulong status; ulong start; int flag; /* Check if Flash is (sufficiently) erased */ if ((BS(*addr) & data) != data) { return 2; } /* Disable interrupts which might cause a timeout here */ flag = disable_interrupts(); *addr = BS(0x40); /* write setup */ *addr = data; /* re-enable interrupts if necessary */ if (flag) { enable_interrupts(); } start = get_timer (0); while (((status = BS(*addr)) & BYTEME(0x00800080)) != BYTEME(0x00800080)) { if (get_timer(start) > CFG_FLASH_WRITE_TOUT) { *addr = BS(0xFF); /* restore read mode */ return 1; } } *addr = BS(0xFF); /* restore read mode */ return 0; } /*----------------------------------------------------------------------- */