mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-20 08:58:52 +09:00
477 lines
11 KiB
C
477 lines
11 KiB
C
/*
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* (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
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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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/* IAP commands use 32 bytes at the top of CPU internal sram, we
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use 512 bytes below that */
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#define COPY_BUFFER_LOCATION 0x40003de0
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#define IAP_LOCATION 0x7ffffff1
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#define IAP_CMD_PREPARE 50
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#define IAP_CMD_COPY 51
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#define IAP_CMD_ERASE 52
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#define IAP_CMD_CHECK 53
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#define IAP_CMD_ID 54
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#define IAP_CMD_VERSION 55
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#define IAP_CMD_COMPARE 56
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#define IAP_RET_CMD_SUCCESS 0
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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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static unsigned long command[5];
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static unsigned long result[2];
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flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
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extern void iap_entry(unsigned long * command, unsigned long * result);
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/*-----------------------------------------------------------------------
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*
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*/
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int get_flash_sector(flash_info_t * info, ulong flash_addr)
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{
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int i;
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for(i=1; i < (info->sector_count); i++) {
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if (flash_addr < (info->start[i]))
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break;
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}
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return (i-1);
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}
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/*-----------------------------------------------------------------------
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* This function assumes that flash_addr is aligned on 512 bytes boundary
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* in flash. This function also assumes that prepare have been called
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* for the sector in question.
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*/
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int copy_buffer_to_flash(flash_info_t * info, ulong flash_addr)
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{
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int first_sector;
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int last_sector;
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first_sector = get_flash_sector(info, flash_addr);
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last_sector = get_flash_sector(info, flash_addr + 512 - 1);
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/* prepare sectors for write */
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command[0] = IAP_CMD_PREPARE;
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command[1] = first_sector;
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command[2] = last_sector;
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iap_entry(command, result);
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if (result[0] != IAP_RET_CMD_SUCCESS) {
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printf("IAP prepare failed\n");
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return ERR_PROG_ERROR;
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}
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command[0] = IAP_CMD_COPY;
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command[1] = flash_addr;
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command[2] = COPY_BUFFER_LOCATION;
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command[3] = 512;
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command[4] = CFG_SYS_CLK_FREQ >> 10;
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iap_entry(command, result);
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if (result[0] != IAP_RET_CMD_SUCCESS) {
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printf("IAP copy failed\n");
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return 1;
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}
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return 0;
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}
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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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CFG_ENV_ADDR,
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CFG_ENV_ADDR + CFG_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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/*-----------------------------------------------------------------------
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*/
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int flash_erase_philips (flash_info_t * info, int s_first, int s_last)
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{
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int flag;
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int prot;
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int sect;
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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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flag = disable_interrupts();
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printf ("Erasing %d sectors starting at sector %2d.\n"
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"This make take some time ... ",
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s_last - s_first + 1, s_first);
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command[0] = IAP_CMD_PREPARE;
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command[1] = s_first;
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command[2] = s_last;
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iap_entry(command, result);
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if (result[0] != IAP_RET_CMD_SUCCESS) {
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printf("IAP prepare failed\n");
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return ERR_PROTECTED;
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}
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command[0] = IAP_CMD_ERASE;
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command[1] = s_first;
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command[2] = s_last;
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command[3] = CFG_SYS_CLK_FREQ >> 10;
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iap_entry(command, result);
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if (result[0] != IAP_RET_CMD_SUCCESS) {
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printf("IAP erase failed\n");
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return ERR_PROTECTED;
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}
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if (flag)
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enable_interrupts();
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return ERR_OK;
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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 flash_erase_philips(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_philips (flash_info_t * info,
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uchar * src,
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ulong addr,
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ulong cnt)
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{
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int first_copy_size;
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int last_copy_size;
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int first_block;
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int last_block;
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int nbr_mid_blocks;
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uchar memmap_value;
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ulong i;
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uchar* src_org;
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uchar* dst_org;
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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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first_block = addr / 512;
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last_block = (addr + cnt) / 512;
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nbr_mid_blocks = last_block - first_block - 1;
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first_copy_size = 512 - (addr % 512);
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last_copy_size = (addr + cnt) % 512;
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#if 0
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printf("\ncopy first block: (1) %lX -> %lX 0x200 bytes, "
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"(2) %lX -> %lX 0x%X bytes, (3) %lX -> %lX 0x200 bytes\n",
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(ulong)(first_block * 512),
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(ulong)COPY_BUFFER_LOCATION,
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(ulong)src,
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(ulong)(COPY_BUFFER_LOCATION + 512 - first_copy_size),
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first_copy_size,
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(ulong)COPY_BUFFER_LOCATION,
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(ulong)(first_block * 512));
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#endif
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/* copy first block */
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memcpy((void*)COPY_BUFFER_LOCATION,
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(void*)(first_block * 512), 512);
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memcpy((void*)(COPY_BUFFER_LOCATION + 512 - first_copy_size),
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src, first_copy_size);
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copy_buffer_to_flash(info, first_block * 512);
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src += first_copy_size;
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addr += first_copy_size;
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/* copy middle blocks */
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for (i = 0; i < nbr_mid_blocks; i++) {
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#if 0
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printf("copy middle block: %lX -> %lX 512 bytes, "
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"%lX -> %lX 512 bytes\n",
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(ulong)src,
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(ulong)COPY_BUFFER_LOCATION,
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(ulong)COPY_BUFFER_LOCATION,
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(ulong)addr);
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#endif
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memcpy((void*)COPY_BUFFER_LOCATION, src, 512);
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copy_buffer_to_flash(info, addr);
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src += 512;
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addr += 512;
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}
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if (last_copy_size > 0) {
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#if 0
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printf("copy last block: (1) %lX -> %lX 0x200 bytes, "
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"(2) %lX -> %lX 0x%X bytes, (3) %lX -> %lX x200 bytes\n",
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(ulong)(last_block * 512),
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(ulong)COPY_BUFFER_LOCATION,
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(ulong)src,
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(ulong)(COPY_BUFFER_LOCATION),
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last_copy_size,
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(ulong)COPY_BUFFER_LOCATION,
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(ulong)addr);
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#endif
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/* copy last block */
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memcpy((void*)COPY_BUFFER_LOCATION,
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(void*)(last_block * 512), 512);
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memcpy((void*)COPY_BUFFER_LOCATION,
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src, last_copy_size);
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copy_buffer_to_flash(info, addr);
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}
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/* verify write */
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memmap_value = GET8(MEMMAP);
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disable_interrupts();
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PUT8(MEMMAP, 01); /* we must make sure that initial 64
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bytes are taken from flash when we
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do the compare */
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for (i = 0; i < cnt; 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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PUT8(MEMMAP, memmap_value);
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enable_interrupts();
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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 write_buff_philips(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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