mirror of
https://github.com/AsahiLinux/u-boot
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1a4596601f
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
691 lines
19 KiB
C
691 lines
19 KiB
C
/*
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* (C) Copyright 2001
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* Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/processor.h>
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flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
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/*-----------------------------------------------------------------------
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* Functions
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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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*/
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static void flash_get_offsets (ulong base, flash_info_t *info)
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{
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int i;
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short n;
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
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/* set sector offsets for bottom boot block type */
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for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
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info->start[i] = base;
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base += 8 << 10;
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}
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while (i < info->sector_count) { /* 64k regular sectors */
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info->start[i] = base;
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base += 64 << 10;
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++i;
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}
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} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
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/* set sector offsets for top boot block type */
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base += info->size;
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i = info->sector_count;
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for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
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base -= 8 << 10;
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--i;
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info->start[i] = base;
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}
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while (i > 0) { /* 64k regular sectors */
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base -= 64 << 10;
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--i;
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info->start[i] = base;
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}
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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}
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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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int k;
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int size;
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int erased;
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volatile unsigned long *flash;
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("missing or unknown FLASH type\n");
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return;
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}
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switch (info->flash_id & FLASH_VENDMASK) {
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case FLASH_MAN_AMD: printf ("AMD "); break;
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case FLASH_MAN_FUJ: printf ("FUJITSU "); break;
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case FLASH_MAN_SST: printf ("SST "); break;
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case FLASH_MAN_STM: printf ("ST "); break;
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default: printf ("Unknown Vendor "); break;
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}
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switch (info->flash_id & FLASH_TYPEMASK) {
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case FLASH_AM400B: printf ("AM29LV400B (4 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM400T: printf ("AM29LV400T (4 Mbit, top boot sector)\n");
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break;
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case FLASH_AM800B: printf ("AM29LV800B (8 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM800T: printf ("AM29LV800T (8 Mbit, top boot sector)\n");
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break;
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case FLASH_AM160B: printf ("AM29LV160B (16 Mbit, bottom boot sect)\n");
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break;
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case FLASH_AM160T: printf ("AM29LV160T (16 Mbit, top boot sector)\n");
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break;
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case FLASH_AM320T: printf ("AM29LV320T (32 M, top sector)\n");
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break;
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case FLASH_AM320B: printf ("AM29LV320B (32 M, bottom sector)\n");
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break;
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case FLASH_AMDL322T: printf ("AM29DL322T (32 M, top sector)\n");
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break;
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case FLASH_AMDL322B: printf ("AM29DL322B (32 M, bottom sector)\n");
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break;
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case FLASH_AMDL323T: printf ("AM29DL323T (32 M, top sector)\n");
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break;
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case FLASH_AMDL323B: printf ("AM29DL323B (32 M, bottom sector)\n");
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break;
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case FLASH_AM640U: printf ("AM29LV640D (64 M, uniform sector)\n");
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break;
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case FLASH_SST800A: printf ("SST39LF/VF800 (8 Mbit, uniform sector size)\n");
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break;
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case FLASH_SST160A: printf ("SST39LF/VF160 (16 Mbit, uniform sector size)\n");
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break;
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case FLASH_STMW320DT: printf ("M29W320DT (32 M, top sector)\n");
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break;
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default: printf ("Unknown Chip Type\n");
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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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#ifdef CONFIG_SYS_FLASH_EMPTY_INFO
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/*
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* Check if whole sector is erased
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*/
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if (i != (info->sector_count-1))
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size = info->start[i+1] - info->start[i];
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else
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size = info->start[0] + info->size - info->start[i];
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erased = 1;
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flash = (volatile unsigned long *)info->start[i];
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size = size >> 2; /* divide by 4 for longword access */
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for (k=0; k<size; k++)
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{
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if (*flash++ != 0xffffffff)
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{
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erased = 0;
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break;
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}
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}
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if ((i % 5) == 0)
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printf ("\n ");
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/* print empty and read-only info */
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printf (" %08lX%s%s",
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info->start[i],
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erased ? " E" : " ",
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info->protect[i] ? "RO " : " ");
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#else
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if ((i % 5) == 0)
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printf ("\n ");
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printf (" %08lX%s",
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info->start[i],
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info->protect[i] ? " (RO)" : " ");
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#endif
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}
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printf ("\n");
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return;
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}
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/*-----------------------------------------------------------------------
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*/
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/*-----------------------------------------------------------------------
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*/
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/*
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* The following code cannot be run from FLASH!
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*/
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static ulong flash_get_size (vu_long *addr, flash_info_t *info)
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{
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short i;
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short n;
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CONFIG_SYS_FLASH_WORD_SIZE value;
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ulong base = (ulong)addr;
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volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)addr;
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debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
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/* Write auto select command: read Manufacturer ID */
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addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
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addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
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addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00900090;
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value = addr2[CONFIG_SYS_FLASH_READ0];
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switch (value) {
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_MANUFACT:
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info->flash_id = FLASH_MAN_AMD;
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break;
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case (CONFIG_SYS_FLASH_WORD_SIZE)FUJ_MANUFACT:
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info->flash_id = FLASH_MAN_FUJ;
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break;
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case (CONFIG_SYS_FLASH_WORD_SIZE)SST_MANUFACT:
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info->flash_id = FLASH_MAN_SST;
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break;
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case (CONFIG_SYS_FLASH_WORD_SIZE)STM_MANUFACT:
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info->flash_id = FLASH_MAN_STM;
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break;
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default:
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info->flash_id = FLASH_UNKNOWN;
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info->sector_count = 0;
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info->size = 0;
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return (0); /* no or unknown flash */
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}
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value = addr2[CONFIG_SYS_FLASH_READ1]; /* device ID */
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switch (value) {
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400T:
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info->flash_id += FLASH_AM400T;
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info->sector_count = 11;
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info->size = 0x00080000;
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break; /* => 0.5 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV400B:
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info->flash_id += FLASH_AM400B;
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info->sector_count = 11;
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info->size = 0x00080000;
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break; /* => 0.5 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800T:
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info->flash_id += FLASH_AM800T;
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info->sector_count = 19;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV800B:
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info->flash_id += FLASH_AM800B;
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info->sector_count = 19;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160T:
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info->flash_id += FLASH_AM160T;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV160B:
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info->flash_id += FLASH_AM160B;
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info->sector_count = 35;
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info->size = 0x00200000;
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break; /* => 2 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)STM_ID_29W320DT:
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info->flash_id += FLASH_STMW320DT;
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info->sector_count = 67;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
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info->flash_id += FLASH_AM320T;
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info->sector_count = 71;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
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info->flash_id += FLASH_AM320B;
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info->sector_count = 71;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322T:
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info->flash_id += FLASH_AMDL322T;
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info->sector_count = 71;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL322B:
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info->flash_id += FLASH_AMDL322B;
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info->sector_count = 71;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323T:
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info->flash_id += FLASH_AMDL323T;
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info->sector_count = 71;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_DL323B:
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info->flash_id += FLASH_AMDL323B;
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info->sector_count = 71;
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info->size = 0x00400000; break; /* => 4 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV640U:
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info->flash_id += FLASH_AM640U;
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info->sector_count = 128;
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info->size = 0x00800000; break; /* => 8 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF800A:
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info->flash_id += FLASH_SST800A;
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info->sector_count = 16;
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info->size = 0x00100000;
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break; /* => 1 MB */
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case (CONFIG_SYS_FLASH_WORD_SIZE)SST_ID_xF160A:
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info->flash_id += FLASH_SST160A;
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info->sector_count = 32;
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info->size = 0x00200000;
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break; /* => 2 MB */
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default:
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info->flash_id = FLASH_UNKNOWN;
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return (0); /* => no or unknown flash */
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}
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/* set up sector start address table */
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if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U)) {
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for (i = 0; i < info->sector_count; i++)
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info->start[i] = base + (i * 0x00010000);
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} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322B) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323B) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324B)) {
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/* set sector offsets for bottom boot block type */
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for (i=0; i<8; ++i) { /* 8 x 8k boot sectors */
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info->start[i] = base;
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base += 8 << 10;
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}
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while (i < info->sector_count) { /* 64k regular sectors */
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info->start[i] = base;
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base += 64 << 10;
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++i;
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}
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} else if (((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL322T) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL323T) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320T) ||
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((info->flash_id & FLASH_TYPEMASK) == FLASH_AMDL324T)) {
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/* set sector offsets for top boot block type */
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base += info->size;
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i = info->sector_count;
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for (n=0; n<8; ++n) { /* 8 x 8k boot sectors */
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base -= 8 << 10;
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--i;
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info->start[i] = base;
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}
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while (i > 0) { /* 64k regular sectors */
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base -= 64 << 10;
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--i;
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info->start[i] = base;
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}
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} else if ((info->flash_id & FLASH_TYPEMASK) == FLASH_STMW320DT) {
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/* set sector offsets for top boot block type */
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base += info->size;
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i = info->sector_count;
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/* 1 x 16k boot sector */
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base -= 16 << 10;
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--i;
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info->start[i] = base;
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/* 2 x 8k boot sectors */
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for (n=0; n<2; ++n) {
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base -= 8 << 10;
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--i;
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info->start[i] = base;
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}
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/* 1 x 32k boot sector */
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base -= 32 << 10;
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--i;
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info->start[i] = base;
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while (i > 0) { /* 64k regular sectors */
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base -= 64 << 10;
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--i;
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info->start[i] = base;
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}
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} else {
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if (info->flash_id & FLASH_BTYPE) {
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/* set sector offsets for bottom boot block type */
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info->start[0] = base + 0x00000000;
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info->start[1] = base + 0x00004000;
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info->start[2] = base + 0x00006000;
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info->start[3] = base + 0x00008000;
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for (i = 4; i < info->sector_count; i++) {
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info->start[i] = base + (i * 0x00010000) - 0x00030000;
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}
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} else {
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/* set sector offsets for top boot block type */
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i = info->sector_count - 1;
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info->start[i--] = base + info->size - 0x00004000;
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info->start[i--] = base + info->size - 0x00006000;
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info->start[i--] = base + info->size - 0x00008000;
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for (; i >= 0; i--) {
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info->start[i] = base + i * 0x00010000;
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}
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}
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}
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/* check for protected sectors */
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for (i = 0; i < info->sector_count; i++) {
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/* read sector protection at sector address, (A7 .. A0) = 0x02 */
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/* D0 = 1 if protected */
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addr2 = (volatile CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
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if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
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info->protect[i] = 0;
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else
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info->protect[i] = addr2[CONFIG_SYS_FLASH_READ2] & 1;
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}
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/*
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* Prevent writes to uninitialized FLASH.
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*/
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if (info->flash_id != FLASH_UNKNOWN) {
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addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
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*addr2 = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
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}
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return (info->size);
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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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volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
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volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
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int flag, prot, sect, l_sect;
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ulong start, now, last;
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int i;
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if ((s_first < 0) || (s_first > s_last)) {
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if (info->flash_id == FLASH_UNKNOWN) {
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printf ("- missing\n");
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} else {
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printf ("- no sectors to erase\n");
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}
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return 1;
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}
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if (info->flash_id == FLASH_UNKNOWN) {
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|
printf ("Can't erase unknown flash type - 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");
|
|
}
|
|
|
|
l_sect = -1;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect<=s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[sect]);
|
|
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) {
|
|
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
|
|
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
|
|
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
|
|
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
|
|
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
|
|
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00500050; /* block erase */
|
|
for (i=0; i<50; i++)
|
|
udelay(1000); /* wait 1 ms */
|
|
} else {
|
|
if (sect == s_first) {
|
|
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
|
|
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
|
|
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080;
|
|
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
|
|
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
|
|
}
|
|
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00300030; /* sector erase */
|
|
}
|
|
l_sect = sect;
|
|
}
|
|
}
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* wait at least 80us - let's wait 1 ms */
|
|
udelay (1000);
|
|
|
|
/*
|
|
* We wait for the last triggered sector
|
|
*/
|
|
if (l_sect < 0)
|
|
goto DONE;
|
|
|
|
start = get_timer (0);
|
|
last = start;
|
|
addr = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[l_sect]);
|
|
while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) != (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) {
|
|
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout\n");
|
|
return 1;
|
|
}
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
|
|
DONE:
|
|
/* reset to read mode */
|
|
addr = (CONFIG_SYS_FLASH_WORD_SIZE *)info->start[0];
|
|
addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00F000F0; /* reset bank */
|
|
|
|
printf (" done\n");
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Copy memory to flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
|
{
|
|
ulong cp, wp, data;
|
|
int i, l, rc;
|
|
|
|
wp = (addr & ~3); /* get lower word aligned address */
|
|
|
|
/*
|
|
* handle unaligned start bytes
|
|
*/
|
|
if ((l = addr - wp) != 0) {
|
|
data = 0;
|
|
for (i=0, cp=wp; i<l; ++i, ++cp) {
|
|
#ifdef CONFIG_B2
|
|
data = data | ((*(uchar *)cp)<<(8*i));
|
|
#else
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
#endif
|
|
}
|
|
for (; i<4 && cnt>0; ++i) {
|
|
#ifdef CONFIG_B2
|
|
data = data | ((*src++)<<(8*i));
|
|
#else
|
|
data = (data << 8) | *src++;
|
|
#endif
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
for (; cnt==0 && i<4; ++i, ++cp) {
|
|
#ifdef CONFIG_B2
|
|
data = data | ((*(uchar *)cp)<<(8*i));
|
|
#else
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
#endif
|
|
}
|
|
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
data = 0;
|
|
#ifdef CONFIG_B2
|
|
data = (*(ulong*)src);
|
|
src += 4;
|
|
#else
|
|
for (i=0; i<4; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
#endif
|
|
if ((rc = write_word(info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
cnt -= 4;
|
|
}
|
|
|
|
if (cnt == 0) {
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* handle unaligned tail bytes
|
|
*/
|
|
data = 0;
|
|
for (i=0, cp=wp; i<4 && cnt>0; ++i, ++cp) {
|
|
#ifdef CONFIG_B2
|
|
data = data | ((*src++)<<(8*i));
|
|
#else
|
|
data = (data << 8) | *src++;
|
|
#endif
|
|
--cnt;
|
|
}
|
|
for (; i<4; ++i, ++cp) {
|
|
#ifdef CONFIG_B2
|
|
data = data | ((*(uchar *)cp)<<(8*i));
|
|
#else
|
|
data = (data << 8) | (*(uchar *)cp);
|
|
#endif
|
|
}
|
|
|
|
return (write_word(info, wp, data));
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* Write a word to Flash, returns:
|
|
* 0 - OK
|
|
* 1 - write timeout
|
|
* 2 - Flash not erased
|
|
*/
|
|
static int write_word (flash_info_t *info, ulong dest, ulong data)
|
|
{
|
|
ulong *data_ptr = &data;
|
|
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[0]);
|
|
volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *)dest;
|
|
volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 = (CONFIG_SYS_FLASH_WORD_SIZE *)data_ptr;
|
|
ulong start;
|
|
int flag;
|
|
int i;
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((*((volatile ulong *)dest) & data) != data) {
|
|
return (2);
|
|
}
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts();
|
|
|
|
for (i=0; i<4/sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++)
|
|
{
|
|
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00AA00AA;
|
|
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00550055;
|
|
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE)0x00A000A0;
|
|
|
|
dest2[i] = data2[i];
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080) !=
|
|
(data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE)0x00800080)) {
|
|
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|