Signed-off-by: TsiChung Liew <Tsi-Chung.Liew@freescale.com>master
TsiChung Liew
16 years ago
committed by
John Rigby
parent
f3962d3f57
commit
b202816c61
@ -1,378 +0,0 @@ |
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/*
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* (C) Copyright 2000-2003 |
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
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* |
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* See file CREDITS for list of people who contributed to this |
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* project. |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License as |
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* published by the Free Software Foundation; either version 2 of |
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* the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
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* MA 02111-1307 USA |
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*/ |
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#include <common.h> |
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#define PHYS_FLASH_1 CONFIG_SYS_FLASH_BASE |
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#define FLASH_BANK_SIZE 0x200000 |
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flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
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void flash_print_info (flash_info_t * info) |
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{ |
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int i; |
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switch (info->flash_id & FLASH_VENDMASK) { |
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case (AMD_MANUFACT & FLASH_VENDMASK): |
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printf ("AMD: "); |
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break; |
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default: |
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printf ("Unknown Vendor "); |
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break; |
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} |
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switch (info->flash_id & FLASH_TYPEMASK) { |
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case (AMD_ID_PL160CB & FLASH_TYPEMASK): |
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printf ("AM29PL160CB (16Mbit)\n"); |
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break; |
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default: |
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printf ("Unknown Chip Type\n"); |
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goto Done; |
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break; |
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} |
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printf (" Size: %ld MB in %d Sectors\n", |
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info->size >> 20, info->sector_count); |
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printf (" Sector Start Addresses:"); |
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for (i = 0; i < info->sector_count; i++) { |
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if ((i % 5) == 0) { |
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printf ("\n "); |
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} |
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printf (" %08lX%s", info->start[i], |
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info->protect[i] ? " (RO)" : " "); |
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} |
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printf ("\n"); |
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Done: |
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return; |
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} |
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unsigned long flash_init (void) |
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{ |
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int i, j; |
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ulong size = 0; |
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for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { |
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ulong flashbase = 0; |
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flash_info[i].flash_id = |
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(AMD_MANUFACT & FLASH_VENDMASK) | |
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(AMD_ID_PL160CB & FLASH_TYPEMASK); |
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flash_info[i].size = FLASH_BANK_SIZE; |
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flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT; |
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memset (flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); |
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if (i == 0) |
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flashbase = PHYS_FLASH_1; |
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else |
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panic ("configured to many flash banks!\n"); |
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for (j = 0; j < flash_info[i].sector_count; j++) { |
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if (j == 0) { |
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/* 1st is 16 KiB */ |
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flash_info[i].start[j] = flashbase; |
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} |
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if ((j >= 1) && (j <= 2)) { |
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/* 2nd and 3rd are 8 KiB */ |
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flash_info[i].start[j] = |
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flashbase + 0x4000 + 0x2000 * (j - 1); |
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} |
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if (j == 3) { |
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/* 4th is 224 KiB */ |
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flash_info[i].start[j] = flashbase + 0x8000; |
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} |
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if ((j >= 4) && (j <= 10)) { |
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/* rest is 256 KiB */ |
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flash_info[i].start[j] = |
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flashbase + 0x40000 + 0x40000 * (j - |
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4); |
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} |
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} |
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size += flash_info[i].size; |
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} |
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flash_protect (FLAG_PROTECT_SET, |
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CONFIG_SYS_FLASH_BASE, |
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CONFIG_SYS_FLASH_BASE + 0x3ffff, &flash_info[0]); |
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return size; |
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} |
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#define CMD_READ_ARRAY 0x00F0 |
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#define CMD_UNLOCK1 0x00AA |
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#define CMD_UNLOCK2 0x0055 |
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#define CMD_ERASE_SETUP 0x0080 |
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#define CMD_ERASE_CONFIRM 0x0030 |
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#define CMD_PROGRAM 0x00A0 |
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#define CMD_UNLOCK_BYPASS 0x0020 |
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#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00000555<<1))) |
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#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA<<1))) |
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#define BIT_ERASE_DONE 0x0080 |
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#define BIT_RDY_MASK 0x0080 |
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#define BIT_PROGRAM_ERROR 0x0020 |
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#define BIT_TIMEOUT 0x80000000 /* our flag */ |
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#define READY 1 |
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#define ERR 2 |
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#define TMO 4 |
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int flash_erase (flash_info_t * info, int s_first, int s_last) |
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{ |
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ulong result; |
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int iflag, cflag, prot, sect; |
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int rc = ERR_OK; |
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int chip1; |
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/* first look for protection bits */ |
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if (info->flash_id == FLASH_UNKNOWN) |
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return ERR_UNKNOWN_FLASH_TYPE; |
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if ((s_first < 0) || (s_first > s_last)) { |
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return ERR_INVAL; |
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} |
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if ((info->flash_id & FLASH_VENDMASK) != |
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(AMD_MANUFACT & FLASH_VENDMASK)) { |
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return ERR_UNKNOWN_FLASH_VENDOR; |
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} |
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prot = 0; |
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for (sect = s_first; sect <= s_last; ++sect) { |
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if (info->protect[sect]) { |
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prot++; |
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} |
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} |
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if (prot) |
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return ERR_PROTECTED; |
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/*
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* Disable interrupts which might cause a timeout |
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* here. Remember that our exception vectors are |
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* at address 0 in the flash, and we don't want a |
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* (ticker) exception to happen while the flash |
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* chip is in programming mode. |
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*/ |
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cflag = icache_status (); |
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icache_disable (); |
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iflag = disable_interrupts (); |
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printf ("\n"); |
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/* Start erase on unprotected sectors */ |
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for (sect = s_first; sect <= s_last && !ctrlc (); sect++) { |
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printf ("Erasing sector %2d ... ", sect); |
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/* arm simple, non interrupt dependent timer */ |
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set_timer (0); |
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if (info->protect[sect] == 0) { /* not protected */ |
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volatile u16 *addr = |
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(volatile u16 *) (info->start[sect]); |
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MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
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MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
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MEM_FLASH_ADDR1 = CMD_ERASE_SETUP; |
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MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
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MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
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*addr = CMD_ERASE_CONFIRM; |
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/* wait until flash is ready */ |
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chip1 = 0; |
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do { |
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result = *addr; |
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/* check timeout */ |
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if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
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MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
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chip1 = TMO; |
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break; |
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} |
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if (!chip1 |
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&& (result & 0xFFFF) & BIT_ERASE_DONE) |
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chip1 = READY; |
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} while (!chip1); |
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MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
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if (chip1 == ERR) { |
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rc = ERR_PROG_ERROR; |
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goto outahere; |
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} |
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if (chip1 == TMO) { |
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rc = ERR_TIMOUT; |
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goto outahere; |
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} |
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printf ("ok.\n"); |
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} else { /* it was protected */ |
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printf ("protected!\n"); |
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} |
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} |
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if (ctrlc ()) |
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printf ("User Interrupt!\n"); |
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outahere: |
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/* allow flash to settle - wait 10 ms */ |
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udelay (10000); |
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if (iflag) |
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enable_interrupts (); |
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if (cflag) |
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icache_enable (); |
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return rc; |
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} |
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static int write_word (flash_info_t * info, ulong dest, ulong data) |
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{ |
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volatile u16 *addr = (volatile u16 *) dest; |
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ulong result; |
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int rc = ERR_OK; |
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int cflag, iflag; |
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int chip1; |
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/*
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* Check if Flash is (sufficiently) erased |
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*/ |
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result = *addr; |
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if ((result & data) != data) |
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return ERR_NOT_ERASED; |
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/*
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* Disable interrupts which might cause a timeout |
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* here. Remember that our exception vectors are |
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* at address 0 in the flash, and we don't want a |
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* (ticker) exception to happen while the flash |
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* chip is in programming mode. |
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*/ |
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cflag = icache_status (); |
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icache_disable (); |
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iflag = disable_interrupts (); |
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MEM_FLASH_ADDR1 = CMD_UNLOCK1; |
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MEM_FLASH_ADDR2 = CMD_UNLOCK2; |
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MEM_FLASH_ADDR1 = CMD_PROGRAM; |
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*addr = data; |
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/* arm simple, non interrupt dependent timer */ |
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set_timer (0); |
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/* wait until flash is ready */ |
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chip1 = 0; |
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do { |
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result = *addr; |
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/* check timeout */ |
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if (get_timer (0) > CONFIG_SYS_FLASH_ERASE_TOUT) { |
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chip1 = ERR | TMO; |
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break; |
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} |
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if (!chip1 && ((result & 0x80) == (data & 0x80))) |
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chip1 = READY; |
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} while (!chip1); |
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*addr = CMD_READ_ARRAY; |
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if (chip1 == ERR || *addr != data) |
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rc = ERR_PROG_ERROR; |
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if (iflag) |
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enable_interrupts (); |
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if (cflag) |
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icache_enable (); |
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return rc; |
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} |
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int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) |
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{ |
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ulong wp, data; |
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int rc; |
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if (addr & 1) { |
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printf ("unaligned destination not supported\n"); |
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return ERR_ALIGN; |
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} |
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#if 0 |
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if (cnt & 1) { |
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printf ("odd transfer sizes not supported\n"); |
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return ERR_ALIGN; |
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} |
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#endif |
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wp = addr; |
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if (addr & 1) { |
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data = (*((volatile u8 *) addr) << 8) | *((volatile u8 *) |
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src); |
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if ((rc = write_word (info, wp - 1, data)) != 0) { |
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return (rc); |
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} |
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src += 1; |
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wp += 1; |
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cnt -= 1; |
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} |
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while (cnt >= 2) { |
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data = *((volatile u16 *) src); |
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if ((rc = write_word (info, wp, data)) != 0) { |
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return (rc); |
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} |
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src += 2; |
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wp += 2; |
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cnt -= 2; |
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} |
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if (cnt == 1) { |
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data = (*((volatile u8 *) src) << 8) | |
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*((volatile u8 *) (wp + 1)); |
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if ((rc = write_word (info, wp, data)) != 0) { |
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return (rc); |
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} |
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src += 1; |
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wp += 1; |
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cnt -= 1; |
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} |
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return ERR_OK; |
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} |
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