?? flash.c
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#define SIZE_4MiB 22static const struct jedec_flash_info jedec_table[] = { { mfr_id: (uint16_t)AMD_MANUFACT, dev_id: (uint16_t)AMD_ID_LV800T, name: "AMD AM29LV800T", DevSize: SIZE_1MiB, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,15), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: (uint16_t)AMD_MANUFACT, dev_id: (uint16_t)AMD_ID_LV800B, name: "AMD AM29LV800B", DevSize: SIZE_1MiB, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,15), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: (uint16_t)AMD_MANUFACT, dev_id: (uint16_t)AMD_ID_LV160T, name: "AMD AM29LV160T", DevSize: SIZE_2MiB, NumEraseRegions: 4, regions: {ERASEINFO(0x10000,31), ERASEINFO(0x08000,1), ERASEINFO(0x02000,2), ERASEINFO(0x04000,1) } }, { mfr_id: (uint16_t)AMD_MANUFACT, dev_id: (uint16_t)AMD_ID_LV160B, name: "AMD AM29LV160B", DevSize: SIZE_2MiB, NumEraseRegions: 4, regions: {ERASEINFO(0x04000,1), ERASEINFO(0x02000,2), ERASEINFO(0x08000,1), ERASEINFO(0x10000,31) } }, { mfr_id: (uint16_t)AMD_MANUFACT, dev_id: (uint16_t)AMD_ID_LV320T, name: "AMD AM29LV320T", DevSize: SIZE_4MiB, NumEraseRegions: 2, regions: {ERASEINFO(0x10000,63), ERASEINFO(0x02000,8) } }, { mfr_id: (uint16_t)AMD_MANUFACT, dev_id: (uint16_t)AMD_ID_LV320B, name: "AMD AM29LV320B", DevSize: SIZE_4MiB, NumEraseRegions: 2, regions: {ERASEINFO(0x02000,8), ERASEINFO(0x10000,63) } }};static ulong cfi_init(uint32_t base, flash_info_t *flash){ int sector; int block; int block_count; int offset = 0; int reverse = 0; int primary; int mfr_id; int dev_id; flash->start[0] = base; cfi_cmd(flash, 0xF0, 0); cfi_cmd(flash, 0x98, 0); if ( !( cfi_read_query(flash, 0x10) == 'Q' && cfi_read_query(flash, 0x11) == 'R' && cfi_read_query(flash, 0x12) == 'Y' )) { cfi_cmd(flash, 0xff, 0); return 0; } flash->size = 1 << cfi_read_query(flash, 0x27); flash->size *= 4; block_count = cfi_read_query(flash, 0x2c); primary = cfi_read_query(flash, 0x15); if ( cfi_read_query(flash, primary + 4) == 0x30) reverse = (cfi_read_query(flash, 0x1) & 0x01); else reverse = (cfi_read_query(flash, primary+15) == 3); flash->sector_count = 0; for ( block = reverse ? block_count - 1 : 0; reverse ? block >= 0 : block < block_count; reverse ? block-- : block ++) { int sector_size = (cfi_read_query(flash, 0x2d + block*4+2) | (cfi_read_query(flash, 0x2d + block*4+3) << 8)) << 8; int sector_count = (cfi_read_query(flash, 0x2d + block*4+0) | (cfi_read_query(flash, 0x2d + block*4+1) << 8)) + 1; for(sector = 0; sector < sector_count; sector++) { flash->start[flash->sector_count++] = base + offset; offset += sector_size * 4; } } mfr_id = cfi_read_query(flash, 0x00); dev_id = cfi_read_query(flash, 0x01); cfi_cmd(flash, 0xff, 0); flash->flash_id = (mfr_id << 16) | dev_id; for (sector = 0; sector < flash->sector_count; sector++) { write32(flash->start[sector], 0x00600060); write32(flash->start[sector], 0x00d000d0); } cfi_cmd(flash, 0xff, 0); for (sector = 0; sector < flash->sector_count; sector++) flash->protect[sector] = 0; do_flash_erase = cfi_erase; write_dword = cfi_write_dword; return flash->size;}static ulong jedec_init(unsigned long base, flash_info_t *flash){ int i; int block, block_count; int sector, offset; int mfr_id, dev_id; flash->start[0] = base; cfi_cmd(flash, 0xF0, 0x000); cfi_cmd(flash, 0xAA, 0x555); cfi_cmd(flash, 0x55, 0x2AA); cfi_cmd(flash, 0x90, 0x555); mfr_id = cfi_read_query(flash, 0x000); dev_id = cfi_read_query(flash, 0x0001); cfi_cmd(flash, 0xf0, 0x000); for(i=0; i<sizeof(jedec_table)/sizeof(struct jedec_flash_info); i++) { if((jedec_table[i].mfr_id == mfr_id) && (jedec_table[i].dev_id == dev_id)) { flash->flash_id = (mfr_id << 16) | dev_id; flash->size = 1 << jedec_table[0].DevSize; flash->size *= 4; block_count = jedec_table[i].NumEraseRegions; offset = 0; flash->sector_count = 0; for (block = 0; block < block_count; block++) { int sector_size = jedec_table[i].regions[block]; int sector_count = (sector_size & 0xff) + 1; sector_size >>= 8; for (sector=0; sector<sector_count; sector++) { flash->start[flash->sector_count++] = base + offset; offset += sector_size * 4; } } break; } } for (sector = 0; sector < flash->sector_count; sector++) flash->protect[sector] = 0; do_flash_erase = jedec_erase; write_dword = jedec_write_dword; return flash->size;}inline void mtibat1u(unsigned int x){ __asm__ __volatile__ ("mtspr 530, %0" :: "r" (x));}inline void mtibat1l(unsigned int x){ __asm__ __volatile__ ("mtspr 531, %0" :: "r" (x));}inline void mtdbat1u(unsigned int x){ __asm__ __volatile__ ("mtspr 538, %0" :: "r" (x));}inline void mtdbat1l(unsigned int x){ __asm__ __volatile__ ("mtspr 539, %0" :: "r" (x));}unsigned long flash_init (void){ unsigned long size = 0; int i; unsigned int msr; /* BAT1 */ CONFIG_WRITE_WORD(ERCR3, 0x0C00000C); CONFIG_WRITE_WORD(ERCR4, 0x0800000C); msr = get_msr(); set_msr(msr & ~(MSR_IR | MSR_DR)); mtibat1l(0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT); mtibat1u(0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP); mtdbat1l(0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT); mtdbat1u(0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP); set_msr(msr); for (i = 0; i < CFG_MAX_FLASH_BANKS; i++) flash_info[i].flash_id = FLASH_UNKNOWN; size = cfi_init(FLASH_BASE0_PRELIM, &flash_info[0]); if (!size) size = jedec_init(FLASH_BASE0_PRELIM, &flash_info[0]); if (flash_info[0].flash_id == FLASH_UNKNOWN) printf ("# Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n", size, size<<20); return size;}void flash_print_info (flash_info_t *flash){ int i; int k; int size; int erased; volatile unsigned long *p; if (flash->flash_id == FLASH_UNKNOWN) { printf ("missing or unknown FLASH type\n"); flash_init(); } if (flash->flash_id == FLASH_UNKNOWN) { printf ("missing or unknown FLASH type\n"); return; } switch (((flash->flash_id) >> 16) & 0xff) { case 0x01: printf ("AMD "); break; case 0x04: printf("FUJITSU "); break; case 0x20: printf("STM "); break; case 0xBF: printf("SST "); break; case 0x89: case 0xB0: printf("INTEL "); break; default: printf ("Unknown Vendor "); break; } switch ((flash->flash_id) & 0xffff) { case (uint16_t)AMD_ID_LV800T: printf ("AM29LV800T\n"); break; case (uint16_t)AMD_ID_LV800B: printf ("AM29LV800B\n"); break; case (uint16_t)AMD_ID_LV160T: printf ("AM29LV160T\n"); break; case (uint16_t)AMD_ID_LV160B: printf ("AM29LV160B\n"); break; case (uint16_t)AMD_ID_LV320T: printf ("AM29LV320T\n"); break; case (uint16_t)AMD_ID_LV320B: printf ("AM29LV320B\n"); break; case (uint16_t)INTEL_ID_28F800C3T: printf ("28F800C3T\n"); break; case (uint16_t)INTEL_ID_28F800C3B: printf ("28F800C3B\n"); break; case (uint16_t)INTEL_ID_28F160C3T: printf ("28F160C3T\n"); break; case (uint16_t)INTEL_ID_28F160C3B: printf ("28F160C3B\n"); break; case (uint16_t)INTEL_ID_28F320C3T: printf ("28F320C3T\n"); break; case (uint16_t)INTEL_ID_28F320C3B: printf ("28F320C3B\n"); break; case (uint16_t)INTEL_ID_28F640C3T: printf ("28F640C3T\n"); break; case (uint16_t)INTEL_ID_28F640C3B: printf ("28F640C3B\n"); break; default: printf ("Unknown Chip Type\n"); break; } if (flash->size >= (1 << 20)) { printf (" Size: %ld MB in %d Sectors\n", flash->size >> 20, flash->sector_count); } else { printf (" Size: %ld kB in %d Sectors\n", flash->size >> 10, flash->sector_count); } printf (" Sector Start Addresses:"); for (i = 0; i < flash->sector_count; ++i) { /* Check if whole sector is erased*/ if (i != (flash->sector_count-1)) size = flash->start[i+1] - flash->start[i]; else size = flash->start[0] + flash->size - flash->start[i]; erased = 1; p = (volatile unsigned long *)flash->start[i]; size = size >> 2; /* divide by 4 for longword access */ for (k=0; k<size; k++) { if (*p++ != 0xffffffff) { erased = 0; break; } } if ((i % 5) == 0) printf ("\n "); printf (" %08lX%s%s", flash->start[i], erased ? " E" : " ", flash->protect[i] ? "RO " : " "); } printf ("\n");}?? 快捷鍵說明
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