mirror of
https://github.com/AsahiLinux/u-boot
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252 lines
6 KiB
C
252 lines
6 KiB
C
/*
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* (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
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*
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* Modified to use the routines in cpu/arm720t/lpc2292/flash.c by
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* Gary Jennejohn <garyj@denx,de>
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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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#include <asm/arch/hardware.h>
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#define SST_BASEADDR 0x80000000
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#define SST_ADDR1 ((volatile ushort*)(SST_BASEADDR + (0x5555 << 1)))
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#define SST_ADDR2 ((volatile ushort*)(SST_BASEADDR + (0x2AAA << 1)))
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flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
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extern int lpc2292_copy_buffer_to_flash(flash_info_t *, ulong);
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extern int lpc2292_flash_erase(flash_info_t *, int, int);
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extern int lpc2292_write_buff (flash_info_t *, uchar *, ulong, ulong);
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/*-----------------------------------------------------------------------
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*
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*/
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void write_word_sst(ulong addr, ushort data)
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{
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ushort tmp;
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*SST_ADDR1 = 0x00AA;
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*SST_ADDR2 = 0x0055;
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*SST_ADDR1 = 0x00A0;
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*((volatile ushort*)addr) = data;
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/* do data polling */
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do {
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tmp = *((volatile ushort*)addr);
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} while (tmp != data);
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}
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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 j, k;
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ulong size = 0;
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ulong flashbase = 0;
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flash_info[0].flash_id = (PHILIPS_LPC2292 & FLASH_VENDMASK);
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flash_info[0].size = 0x003E000; /* 256 - 8 KB */
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flash_info[0].sector_count = 17;
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memset (flash_info[0].protect, 0, 17);
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flashbase = 0x00000000;
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for (j = 0, k = 0; j < 8; j++, k++) {
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flash_info[0].start[k] = flashbase;
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flashbase += 0x00002000;
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}
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for (j = 0; j < 2; j++, k++) {
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flash_info[0].start[k] = flashbase;
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flashbase += 0x00010000;
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}
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for (j = 0; j < 7; j++, k++) {
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flash_info[0].start[k] = flashbase;
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flashbase += 0x00002000;
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}
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size += flash_info[0].size;
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flash_info[1].flash_id = (SST_MANUFACT & FLASH_VENDMASK);
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flash_info[1].size = 0x00200000; /* 2 MB */
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flash_info[1].sector_count = 512;
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memset (flash_info[1].protect, 0, 512);
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flashbase = SST_BASEADDR;
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for (j=0; j<512; j++) {
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flash_info[1].start[j] = flashbase;
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flashbase += 0x1000; /* 4 KB sectors */
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}
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size += flash_info[1].size;
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/* Protect monitor and environment sectors */
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flash_protect (FLAG_PROTECT_SET,
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0x0,
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0x0 + monitor_flash_len - 1,
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&flash_info[0]);
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flash_protect (FLAG_PROTECT_SET,
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CONFIG_ENV_ADDR,
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CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
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&flash_info[0]);
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return 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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int erased = 0;
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unsigned long j;
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unsigned long count;
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unsigned char *p;
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switch (info->flash_id & FLASH_VENDMASK) {
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case (SST_MANUFACT & FLASH_VENDMASK):
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printf("SST: ");
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break;
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case (PHILIPS_LPC2292 & FLASH_VENDMASK):
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printf("Philips: ");
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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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printf (" Size: %ld KB in %d Sectors\n",
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info->size >> 10, 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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if (i < (info->sector_count - 1)) {
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count = info->start[i+1] - info->start[i];
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}
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else {
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count = info->start[0] + info->size - info->start[i];
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}
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p = (unsigned char*)(info->start[i]);
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erased = 1;
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for (j = 0; j < count; j++) {
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if (*p != 0xFF) {
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erased = 0;
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break;
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}
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p++;
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}
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printf (" %08lX%s%s", info->start[i], info->protect[i] ? " RO" : " ",
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erased ? " E" : " ");
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}
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printf ("\n");
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}
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int flash_erase_sst (flash_info_t * info, int s_first, int s_last)
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{
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int i;
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for (i = s_first; i <= s_last; i++) {
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*SST_ADDR1 = 0x00AA;
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*SST_ADDR2 = 0x0055;
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*SST_ADDR1 = 0x0080;
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*SST_ADDR1 = 0x00AA;
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*SST_ADDR2 = 0x0055;
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*((volatile ushort*)(info->start[i])) = 0x0030;
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/* wait for erase to finish */
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udelay(25000);
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}
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return ERR_OK;
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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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switch (info->flash_id & FLASH_VENDMASK) {
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case (SST_MANUFACT & FLASH_VENDMASK):
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return flash_erase_sst(info, s_first, s_last);
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case (PHILIPS_LPC2292 & FLASH_VENDMASK):
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return lpc2292_flash_erase(info, s_first, s_last);
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default:
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return ERR_PROTECTED;
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}
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return ERR_PROTECTED;
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}
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/*-----------------------------------------------------------------------
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* Copy memory to flash.
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*
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* cnt is in bytes
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*/
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int write_buff_sst (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
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{
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ushort tmp;
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ulong i;
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uchar* src_org;
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uchar* dst_org;
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ulong cnt_org = cnt;
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int ret = ERR_OK;
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src_org = src;
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dst_org = (uchar*)addr;
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if (addr & 1) { /* if odd address */
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tmp = *((uchar*)(addr - 1)); /* little endian */
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tmp |= (*src << 8);
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write_word_sst(addr - 1, tmp);
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addr += 1;
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cnt -= 1;
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src++;
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}
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while (cnt > 1) {
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tmp = ((*(src+1)) << 8) + (*src); /* little endian */
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write_word_sst(addr, tmp);
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addr += 2;
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src += 2;
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cnt -= 2;
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}
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if (cnt > 0) {
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tmp = (*((uchar*)(addr + 1))) << 8;
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tmp |= *src;
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write_word_sst(addr, tmp);
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}
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for (i = 0; i < cnt_org; i++) {
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if (*dst_org != *src_org) {
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printf("Write failed. Byte %lX differs\n", i);
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ret = ERR_PROG_ERROR;
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break;
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}
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dst_org++;
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src_org++;
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}
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return ret;
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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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switch (info->flash_id & FLASH_VENDMASK) {
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case (SST_MANUFACT & FLASH_VENDMASK):
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return write_buff_sst(info, src, addr, cnt);
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case (PHILIPS_LPC2292 & FLASH_VENDMASK):
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return lpc2292_write_buff(info, src, addr, cnt);
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default:
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return ERR_PROG_ERROR;
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}
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return ERR_PROG_ERROR;
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}
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