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author | Aubrey.Li <aubrey.adi@gmail.com> | 2007-03-09 05:38:44 (GMT) |
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committer | Aubrey.Li <aubrey.adi@gmail.com> | 2007-03-09 05:38:44 (GMT) |
commit | 3f0606ad0b5639f7f22848fe5b4574e754d0470f (patch) | |
tree | 3cb4fd316134b6a176607ad61739720aeb971a5a /board/bf533-ezkit/flash.c | |
parent | eb92f613556800f7483666db09d9a237ad911d4a (diff) | |
download | u-boot-3f0606ad0b5639f7f22848fe5b4574e754d0470f.tar.xz |
[Blackfin]PATCH-1/2]: Remove obsolete blackfin port and add bf533 platform support
Diffstat (limited to 'board/bf533-ezkit/flash.c')
-rw-r--r-- | board/bf533-ezkit/flash.c | 481 |
1 files changed, 481 insertions, 0 deletions
diff --git a/board/bf533-ezkit/flash.c b/board/bf533-ezkit/flash.c new file mode 100644 index 0000000..1b56d5b --- /dev/null +++ b/board/bf533-ezkit/flash.c @@ -0,0 +1,481 @@ +/* + * U-boot - flash.c Flash driver for PSD4256GV + * + * Copyright (c) 2005 blackfin.uclinux.org + * This file is based on BF533EzFlash.c originally written by Analog Devices, Inc. + * + * (C) Copyright 2000-2004 + * 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 "flash-defines.h" + +void flash_reset(void) +{ + reset_flash(); +} + +unsigned long flash_get_size(ulong baseaddr, flash_info_t * info, int bank_flag) +{ + int id = 0, i = 0; + static int FlagDev = 1; + + id = get_codes(); + if (FlagDev) { +#ifdef DEBUG + printf("Device ID of the Flash is %x\n", id); +#endif + FlagDev = 0; + } + info->flash_id = id; + + switch (bank_flag) { + case 0: + for (i = PriFlashABegin; i < SecFlashABegin; i++) + info->start[i] = (baseaddr + (i * AFP_SectorSize1)); + info->size = 0x200000; + info->sector_count = 32; + break; + case 1: + info->start[0] = baseaddr + SecFlashASec1Off; + info->start[1] = baseaddr + SecFlashASec2Off; + info->start[2] = baseaddr + SecFlashASec3Off; + info->start[3] = baseaddr + SecFlashASec4Off; + info->size = 0x10000; + info->sector_count = 4; + break; + case 2: + info->start[0] = baseaddr + SecFlashBSec1Off; + info->start[1] = baseaddr + SecFlashBSec2Off; + info->start[2] = baseaddr + SecFlashBSec3Off; + info->start[3] = baseaddr + SecFlashBSec4Off; + info->size = 0x10000; + info->sector_count = 4; + break; + } + return (info->size); +} + +unsigned long flash_init(void) +{ + unsigned long size_b0, size_b1, size_b2; + int i; + + size_b0 = size_b1 = size_b2 = 0; +#ifdef DEBUG + printf("Flash Memory Start 0x%x\n", CFG_FLASH_BASE); + printf("Memory Map for the Flash\n"); + printf("0x20000000 - 0x200FFFFF Flash A Primary (1MB)\n"); + printf("0x20100000 - 0x201FFFFF Flash B Primary (1MB)\n"); + printf("0x20200000 - 0x2020FFFF Flash A Secondary (64KB)\n"); + printf("0x20280000 - 0x2028FFFF Flash B Secondary (64KB)\n"); + printf("Please type command flinfo for information on Sectors \n"); +#endif + for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) { + flash_info[i].flash_id = FLASH_UNKNOWN; + } + + size_b0 = flash_get_size(CFG_FLASH0_BASE, &flash_info[0], 0); + size_b1 = flash_get_size(CFG_FLASH0_BASE, &flash_info[1], 1); + size_b2 = flash_get_size(CFG_FLASH0_BASE, &flash_info[2], 2); + + if (flash_info[0].flash_id == FLASH_UNKNOWN || size_b0 == 0) { + printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n", + size_b0, size_b0 >> 20); + } + + (void)flash_protect(FLAG_PROTECT_SET, CFG_FLASH0_BASE, + (flash_info[0].start[2] - 1), &flash_info[0]); + + return (size_b0 + size_b1 + size_b2); +} + +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) { + case FLASH_PSD4256GV: + printf("ST Microelectronics "); + break; + default: + printf("Unknown Vendor: (0x%08X) ", info->flash_id); + break; + } + 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; +} + +int flash_erase(flash_info_t * info, int s_first, int s_last) +{ + int cnt = 0, i; + int prot, sect; + + 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"); + + cnt = s_last - s_first + 1; + + if (cnt == FLASH_TOT_SECT) { + printf("Erasing flash, Please Wait \n"); + if (erase_flash() < 0) { + printf("Erasing flash failed \n"); + return FLASH_FAIL; + } + } else { + printf("Erasing Flash locations, Please Wait\n"); + for (i = s_first; i <= s_last; i++) { + if (info->protect[i] == 0) { /* not protected */ + if (erase_block_flash(i, info->start[i]) < 0) { + printf("Error Sector erasing \n"); + return FLASH_FAIL; + } + } + } + } + return FLASH_SUCCESS; +} + +int write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) +{ + int ret; + + ret = write_data(addr, cnt, 1, (int *)src); + if (ret == FLASH_FAIL) + return ERR_NOT_ERASED; + return FLASH_SUCCESS; +} + +int write_data(long lStart, long lCount, long lStride, int *pnData) +{ + long i = 0; + int j = 0; + unsigned long ulOffset = lStart - CFG_FLASH_BASE; + int d; + int iShift = 0; + int iNumWords = 2; + int nLeftover = lCount % 4; + int nSector = 0; + + for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) { + for (iShift = 0, j = 0; (j < iNumWords); + j++, ulOffset += (lStride * 2)) { + if ((ulOffset >= INVALIDLOCNSTART) + && (ulOffset < INVALIDLOCNEND)) { + printf + ("Invalid locations, Try writing to another location \n"); + return FLASH_FAIL; + } + get_sector_number(ulOffset, &nSector); + read_flash(ulOffset, &d); + if (d != 0xffff) { + printf + ("Flash not erased at offset 0x%x Please erase to reprogram \n", + ulOffset); + return FLASH_FAIL; + } + unlock_flash(ulOffset); + if (write_flash(ulOffset, (pnData[i] >> iShift)) < 0) { + printf("Error programming the flash \n"); + return FLASH_FAIL; + } + iShift += 16; + } + } + if (nLeftover > 0) { + if ((ulOffset >= INVALIDLOCNSTART) + && (ulOffset < INVALIDLOCNEND)) + return FLASH_FAIL; + get_sector_number(ulOffset, &nSector); + read_flash(ulOffset, &d); + if (d != 0xffff) { + printf + ("Flash already programmed. Please erase to reprogram \n"); + printf("uloffset = 0x%x \t d = 0x%x\n", ulOffset, d); + return FLASH_FAIL; + } + unlock_flash(ulOffset); + if (write_flash(ulOffset, pnData[i]) < 0) { + printf("Error programming the flash \n"); + return FLASH_FAIL; + } + } + return FLASH_SUCCESS; +} + +int read_data(long ulStart, long lCount, long lStride, int *pnData) +{ + long i = 0; + int j = 0; + long ulOffset = ulStart; + int iShift = 0; + int iNumWords = 2; + int nLeftover = lCount % 4; + int nHi, nLow; + int nSector = 0; + + for (i = 0; (i < lCount / 4) && (i < BUFFER_SIZE); i++) { + for (iShift = 0, j = 0; j < iNumWords; j += 2) { + if ((ulOffset >= INVALIDLOCNSTART) + && (ulOffset < INVALIDLOCNEND)) + return FLASH_FAIL; + + get_sector_number(ulOffset, &nSector); + read_flash(ulOffset, &nLow); + ulOffset += (lStride * 2); + read_flash(ulOffset, &nHi); + ulOffset += (lStride * 2); + pnData[i] = (nHi << 16) | nLow; + } + } + if (nLeftover > 0) { + if ((ulOffset >= INVALIDLOCNSTART) + && (ulOffset < INVALIDLOCNEND)) + return FLASH_FAIL; + + get_sector_number(ulOffset, &nSector); + read_flash(ulOffset, &pnData[i]); + } + return FLASH_SUCCESS; +} + +int write_flash(long nOffset, int nValue) +{ + long addr; + + addr = (CFG_FLASH_BASE + nOffset); + __builtin_bfin_ssync(); + *(unsigned volatile short *)addr = nValue; + __builtin_bfin_ssync(); + if (poll_toggle_bit(nOffset) < 0) + return FLASH_FAIL; + return FLASH_SUCCESS; +} + +int read_flash(long nOffset, int *pnValue) +{ + int nValue = 0x0; + long addr = (CFG_FLASH_BASE + nOffset); + + if (nOffset != 0x2) + reset_flash(); + __builtin_bfin_ssync(); + nValue = *(volatile unsigned short *)addr; + __builtin_bfin_ssync(); + *pnValue = nValue; + return TRUE; +} + +int poll_toggle_bit(long lOffset) +{ + unsigned int u1, u2; + unsigned long timeout = 0xFFFFFFFF; + volatile unsigned long *FB = + (volatile unsigned long *)(0x20000000 + lOffset); + while (1) { + if (timeout < 0) + break; + u1 = *(volatile unsigned short *)FB; + u2 = *(volatile unsigned short *)FB; + if ((u1 & 0x0040) == (u2 & 0x0040)) + return FLASH_SUCCESS; + if ((u2 & 0x0020) == 0x0000) + continue; + u1 = *(volatile unsigned short *)FB; + if ((u2 & 0x0040) == (u1 & 0x0040)) + return FLASH_SUCCESS; + else { + reset_flash(); + return FLASH_FAIL; + } + timeout--; + } + printf("Time out occured \n"); + if (timeout < 0) + return FLASH_FAIL; +} + +void reset_flash(void) +{ + write_flash(WRITESEQ1, RESET_VAL); + /* Wait for 10 micro seconds */ + udelay(10); +} + +int erase_flash(void) +{ + write_flash(WRITESEQ1, WRITEDATA1); + write_flash(WRITESEQ2, WRITEDATA2); + write_flash(WRITESEQ3, WRITEDATA3); + write_flash(WRITESEQ4, WRITEDATA4); + write_flash(WRITESEQ5, WRITEDATA5); + write_flash(WRITESEQ6, WRITEDATA6); + + if (poll_toggle_bit(0x0000) < 0) + return FLASH_FAIL; + + write_flash(SecFlashAOff + WRITESEQ1, WRITEDATA1); + write_flash(SecFlashAOff + WRITESEQ2, WRITEDATA2); + write_flash(SecFlashAOff + WRITESEQ3, WRITEDATA3); + write_flash(SecFlashAOff + WRITESEQ4, WRITEDATA4); + write_flash(SecFlashAOff + WRITESEQ5, WRITEDATA5); + write_flash(SecFlashAOff + WRITESEQ6, WRITEDATA6); + + if (poll_toggle_bit(SecFlashASec1Off) < 0) + return FLASH_FAIL; + + write_flash(PriFlashBOff + WRITESEQ1, WRITEDATA1); + write_flash(PriFlashBOff + WRITESEQ2, WRITEDATA2); + write_flash(PriFlashBOff + WRITESEQ3, WRITEDATA3); + write_flash(PriFlashBOff + WRITESEQ4, WRITEDATA4); + write_flash(PriFlashBOff + WRITESEQ5, WRITEDATA5); + write_flash(PriFlashBOff + WRITESEQ6, WRITEDATA6); + + if (poll_toggle_bit(PriFlashBOff) < 0) + return FLASH_FAIL; + + write_flash(SecFlashBOff + WRITESEQ1, WRITEDATA1); + write_flash(SecFlashBOff + WRITESEQ2, WRITEDATA2); + write_flash(SecFlashBOff + WRITESEQ3, WRITEDATA3); + write_flash(SecFlashBOff + WRITESEQ4, WRITEDATA4); + write_flash(SecFlashBOff + WRITESEQ5, WRITEDATA5); + write_flash(SecFlashBOff + WRITESEQ6, WRITEDATA6); + + if (poll_toggle_bit(SecFlashBOff) < 0) + return FLASH_FAIL; + + return FLASH_SUCCESS; +} + +int erase_block_flash(int nBlock, unsigned long address) +{ + long ulSectorOff = 0x0; + + if ((nBlock < 0) || (nBlock > AFP_NumSectors)) + return FALSE; + + ulSectorOff = (address - CFG_FLASH_BASE); + + write_flash((WRITESEQ1 | ulSectorOff), WRITEDATA1); + write_flash((WRITESEQ2 | ulSectorOff), WRITEDATA2); + write_flash((WRITESEQ3 | ulSectorOff), WRITEDATA3); + write_flash((WRITESEQ4 | ulSectorOff), WRITEDATA4); + write_flash((WRITESEQ5 | ulSectorOff), WRITEDATA5); + + write_flash(ulSectorOff, BlockEraseVal); + + if (poll_toggle_bit(ulSectorOff) < 0) + return FLASH_FAIL; + + return FLASH_SUCCESS; +} + +void unlock_flash(long ulOffset) +{ + unsigned long ulOffsetAddr = ulOffset; + ulOffsetAddr &= 0xFFFF0000; + + write_flash((WRITESEQ1 | ulOffsetAddr), UNLOCKDATA1); + write_flash((WRITESEQ2 | ulOffsetAddr), UNLOCKDATA2); + write_flash((WRITESEQ3 | ulOffsetAddr), UNLOCKDATA3); +} + +int get_codes() +{ + int dev_id = 0; + + write_flash(WRITESEQ1, GETCODEDATA1); + write_flash(WRITESEQ2, GETCODEDATA2); + write_flash(WRITESEQ3, GETCODEDATA3); + + read_flash(0x0002, &dev_id); + dev_id &= 0x00FF; + + reset_flash(); + + return dev_id; +} + +void get_sector_number(long ulOffset, int *pnSector) +{ + int nSector = 0; + + if (ulOffset >= SecFlashAOff) { + if ((ulOffset < SecFlashASec1Off) + && (ulOffset < SecFlashASec2Off)) { + nSector = SECT32; + } else if ((ulOffset >= SecFlashASec2Off) + && (ulOffset < SecFlashASec3Off)) { + nSector = SECT33; + } else if ((ulOffset >= SecFlashASec3Off) + && (ulOffset < SecFlashASec4Off)) { + nSector = SECT34; + } else if ((ulOffset >= SecFlashASec4Off) + && (ulOffset < SecFlashAEndOff)) { + nSector = SECT35; + } + } else if (ulOffset >= SecFlashBOff) { + if ((ulOffset < SecFlashBSec1Off) + && (ulOffset < SecFlashBSec2Off)) { + nSector = SECT36; + } + if ((ulOffset < SecFlashBSec2Off) + && (ulOffset < SecFlashBSec3Off)) { + nSector = SECT37; + } + if ((ulOffset < SecFlashBSec3Off) + && (ulOffset < SecFlashBSec4Off)) { + nSector = SECT38; + } + if ((ulOffset < SecFlashBSec4Off) + && (ulOffset < SecFlashBEndOff)) { + nSector = SECT39; + } + } else if ((ulOffset >= PriFlashAOff) && (ulOffset < SecFlashAOff)) { + nSector = ulOffset & 0xffff0000; + nSector = ulOffset >> 16; + nSector = nSector & 0x000ff; + } + + if ((nSector >= 0) && (nSector < AFP_NumSectors)) { + *pnSector = nSector; + } +} |