Ladislav Michl
16 years ago
committed by
Jean-Christophe PLAGNIOL-VILLARD
parent
3f464b0fc0
commit
71f7bd305d
@ -1,343 +0,0 @@ |
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/*
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* (C) Copyright 2002 |
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com> |
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* Alex Zuepke <azu@sysgo.de> |
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* |
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* (C) Copyright 2005 |
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* 2N Telekomunikace, a.s. <www.2n.cz> |
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* Ladislav Michl <michl@2n.cz> |
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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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/*#if 0 */ |
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#if (PHYS_SDRAM_1_SIZE != SZ_32M) |
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#include "crcek.h" |
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#if (CONFIG_SYS_MAX_FLASH_BANKS > 1) |
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#error There is always only _one_ flash chip |
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#endif |
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flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; |
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#define CMD_READ_ARRAY 0x000000f0 |
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#define CMD_UNLOCK1 0x000000aa |
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#define CMD_UNLOCK2 0x00000055 |
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#define CMD_ERASE_SETUP 0x00000080 |
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#define CMD_ERASE_CONFIRM 0x00000030 |
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#define CMD_PROGRAM 0x000000a0 |
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#define CMD_UNLOCK_BYPASS 0x00000020 |
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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 0x00000080 |
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#define BIT_RDY_MASK 0x00000080 |
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#define BIT_PROGRAM_ERROR 0x00000020 |
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#define BIT_TIMEOUT 0x80000000 /* our flag */ |
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/*-----------------------------------------------------------------------
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*/ |
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ulong flash_init(void) |
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{ |
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int i; |
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flash_info[0].flash_id = (AMD_MANUFACT & FLASH_VENDMASK) | |
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(AMD_ID_LV800B & FLASH_TYPEMASK); |
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flash_info[0].size = PHYS_FLASH_1_SIZE; |
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flash_info[0].sector_count = CONFIG_SYS_MAX_FLASH_SECT; |
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memset(flash_info[0].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); |
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for (i = 0; i < flash_info[0].sector_count; i++) { |
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switch (i) { |
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case 0: /* 16kB */ |
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flash_info[0].start[0] = CONFIG_SYS_FLASH_BASE; |
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break; |
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case 1: /* 8kB */ |
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flash_info[0].start[1] = CONFIG_SYS_FLASH_BASE + 0x4000; |
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break; |
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case 2: /* 8kB */ |
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flash_info[0].start[2] = CONFIG_SYS_FLASH_BASE + 0x4000 + |
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0x2000; |
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break; |
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case 3: /* 32 KB */ |
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flash_info[0].start[3] = CONFIG_SYS_FLASH_BASE + 0x4000 + |
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2 * 0x2000; |
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break; |
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case 4: |
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flash_info[0].start[4] = CONFIG_SYS_FLASH_BASE + 0x4000 + |
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2 * 0x2000 + 0x8000; |
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break; |
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default: /* 64kB */ |
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flash_info[0].start[i] = flash_info[0].start[i-1] + |
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0x10000; |
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break; |
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} |
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} |
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/* U-Boot */ |
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flash_protect(FLAG_PROTECT_SET, |
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LOADER1_OFFSET, |
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LOADER1_OFFSET + LOADER_SIZE - 1, flash_info); |
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/* Protect crcek, env and r_env as well */ |
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flash_protect(FLAG_PROTECT_SET, 0, 0x8000 - 1, flash_info); |
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return flash_info[0].size; |
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} |
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/*-----------------------------------------------------------------------
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*/ |
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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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puts("AMD: "); |
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break; |
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default: |
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puts("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_LV800B & FLASH_TYPEMASK): |
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puts("AM29LV800BB (8Mb)\n"); |
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break; |
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default: |
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puts("Unknown chip type\n"); |
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return; |
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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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puts(" 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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puts("\n "); |
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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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puts("\n"); |
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} |
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/*-----------------------------------------------------------------------
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*/ |
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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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ushort result; |
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int prot, sect; |
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int rc = ERR_OK; |
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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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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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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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if (prot) |
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printf("- Warning: %d protected sectors will not be erased!\n", |
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prot); |
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else |
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putc('\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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if (info->protect[sect] == 0) { /* not protected */ |
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vu_short *addr = (vu_short *) (info->start[sect]); |
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/* arm simple, non interrupt dependent timer */ |
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reset_timer_masked(); |
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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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while (1) { |
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result = *addr; |
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/* check timeout */ |
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if (get_timer_masked() > CONFIG_SYS_FLASH_ERASE_TOUT) { |
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MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
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rc = ERR_TIMOUT; |
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break; |
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} |
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if ((result & 0xfff) & BIT_ERASE_DONE) |
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break; |
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if ((result & 0xffff) & BIT_PROGRAM_ERROR) { |
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rc = ERR_PROG_ERROR; |
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break; |
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} |
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} |
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MEM_FLASH_ADDR1 = CMD_READ_ARRAY; |
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if (rc != ERR_OK) |
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goto out; |
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putc('.'); |
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} |
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} |
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out: |
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/* allow flash to settle - wait 10 ms */ |
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udelay_masked(10000); |
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return rc; |
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} |
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/*-----------------------------------------------------------------------
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* Copy memory to flash |
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*/ |
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static int write_hword(flash_info_t *info, ulong dest, ushort data) |
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{ |
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vu_short *addr = (vu_short *) dest; |
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ushort result; |
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int rc = ERR_OK; |
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/* check if flash is (sufficiently) erased */ |
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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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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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reset_timer_masked(); |
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/* wait until flash is ready */ |
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while (1) { |
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result = *addr; |
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/* check timeout */ |
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if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) { |
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rc = ERR_TIMOUT; |
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break; |
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} |
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if ((result & 0x80) == (data & 0x80)) |
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break; |
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if ((result & 0xffff) & BIT_PROGRAM_ERROR) { |
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result = *addr; |
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if ((result & 0x80) != (data & 0x80)) |
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rc = ERR_PROG_ERROR; |
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} |
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} |
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*addr = CMD_READ_ARRAY; |
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if (*addr != data) |
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rc = ERR_PROG_ERROR; |
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return rc; |
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} |
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/*-----------------------------------------------------------------------
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* Copy memory to flash. |
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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 cp, wp; |
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int l; |
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int i, rc; |
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ushort data; |
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wp = (addr & ~1); /* get lower word aligned address */ |
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/*
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* handle unaligned start bytes |
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*/ |
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if ((l = addr - wp) != 0) { |
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data = 0; |
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for (i = 0, cp = wp; i < l; ++i, ++cp) |
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data = (data >> 8) | (*(uchar *) cp << 8); |
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for (; i < 2 && cnt > 0; ++i) { |
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data = (data >> 8) | (*src++ << 8); |
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--cnt; |
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++cp; |
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} |
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for (; cnt == 0 && i < 2; ++i, ++cp) |
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data = (data >> 8) | (*(uchar *) cp << 8); |
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if ((rc = write_hword(info, wp, data)) != 0) |
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return (rc); |
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wp += 2; |
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} |
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/*
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* handle word aligned part |
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*/ |
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while (cnt >= 2) { |
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data = *((vu_short *) src); |
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if ((rc = write_hword(info, wp, data)) != 0) |
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return (rc); |
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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 == 0) |
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return ERR_OK; |
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/*
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* handle unaligned tail bytes |
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*/ |
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data = 0; |
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for (i = 0, cp = wp; i < 2 && cnt > 0; ++i, ++cp) { |
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data = (data >> 8) | (*src++ << 8); |
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--cnt; |
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} |
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for (; i < 2; ++i, ++cp) |
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data = (data >> 8) | (*(uchar *) cp << 8); |
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return write_hword(info, wp, data); |
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} |
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#endif |
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