mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 17:07:38 +00:00
249 lines
6.1 KiB
C
249 lines
6.1 KiB
C
/*
|
|
* (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
|
|
*
|
|
* Modified to remove all but the IAP-command related code by
|
|
* Gary Jennejohn <garyj@denx.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation; either version 2 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/arch/hardware.h>
|
|
|
|
/* IAP commands use 32 bytes at the top of CPU internal sram, we
|
|
use 512 bytes below that */
|
|
#define COPY_BUFFER_LOCATION 0x40003de0
|
|
|
|
#define IAP_LOCATION 0x7ffffff1
|
|
#define IAP_CMD_PREPARE 50
|
|
#define IAP_CMD_COPY 51
|
|
#define IAP_CMD_ERASE 52
|
|
#define IAP_CMD_CHECK 53
|
|
#define IAP_CMD_ID 54
|
|
#define IAP_CMD_VERSION 55
|
|
#define IAP_CMD_COMPARE 56
|
|
|
|
#define IAP_RET_CMD_SUCCESS 0
|
|
|
|
static unsigned long command[5];
|
|
static unsigned long result[2];
|
|
|
|
extern void iap_entry(unsigned long * command, unsigned long * result);
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*
|
|
*/
|
|
static int get_flash_sector(flash_info_t * info, ulong flash_addr)
|
|
{
|
|
int i;
|
|
|
|
for(i = 1; i < (info->sector_count); i++) {
|
|
if (flash_addr < (info->start[i]))
|
|
break;
|
|
}
|
|
|
|
return (i-1);
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* This function assumes that flash_addr is aligned on 512 bytes boundary
|
|
* in flash. This function also assumes that prepare have been called
|
|
* for the sector in question.
|
|
*/
|
|
int lpc2292_copy_buffer_to_flash(flash_info_t * info, ulong flash_addr)
|
|
{
|
|
int first_sector;
|
|
int last_sector;
|
|
|
|
first_sector = get_flash_sector(info, flash_addr);
|
|
last_sector = get_flash_sector(info, flash_addr + 512 - 1);
|
|
|
|
/* prepare sectors for write */
|
|
command[0] = IAP_CMD_PREPARE;
|
|
command[1] = first_sector;
|
|
command[2] = last_sector;
|
|
iap_entry(command, result);
|
|
if (result[0] != IAP_RET_CMD_SUCCESS) {
|
|
printf("IAP prepare failed\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
command[0] = IAP_CMD_COPY;
|
|
command[1] = flash_addr;
|
|
command[2] = COPY_BUFFER_LOCATION;
|
|
command[3] = 512;
|
|
command[4] = CONFIG_SYS_SYS_CLK_FREQ >> 10;
|
|
iap_entry(command, result);
|
|
if (result[0] != IAP_RET_CMD_SUCCESS) {
|
|
printf("IAP copy failed\n");
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int lpc2292_flash_erase (flash_info_t * info, int s_first, int s_last)
|
|
{
|
|
int flag;
|
|
int prot;
|
|
int sect;
|
|
|
|
prot = 0;
|
|
for (sect = s_first; sect <= s_last; ++sect) {
|
|
if (info->protect[sect]) {
|
|
prot++;
|
|
}
|
|
}
|
|
if (prot)
|
|
return ERR_PROTECTED;
|
|
|
|
|
|
flag = disable_interrupts();
|
|
|
|
printf ("Erasing %d sectors starting at sector %2d.\n"
|
|
"This make take some time ... ",
|
|
s_last - s_first + 1, s_first);
|
|
|
|
command[0] = IAP_CMD_PREPARE;
|
|
command[1] = s_first;
|
|
command[2] = s_last;
|
|
iap_entry(command, result);
|
|
if (result[0] != IAP_RET_CMD_SUCCESS) {
|
|
printf("IAP prepare failed\n");
|
|
return ERR_PROTECTED;
|
|
}
|
|
|
|
command[0] = IAP_CMD_ERASE;
|
|
command[1] = s_first;
|
|
command[2] = s_last;
|
|
command[3] = CONFIG_SYS_SYS_CLK_FREQ >> 10;
|
|
iap_entry(command, result);
|
|
if (result[0] != IAP_RET_CMD_SUCCESS) {
|
|
printf("IAP erase failed\n");
|
|
return ERR_PROTECTED;
|
|
}
|
|
|
|
if (flag)
|
|
enable_interrupts();
|
|
|
|
return ERR_OK;
|
|
}
|
|
|
|
int lpc2292_write_buff (flash_info_t * info, uchar * src, ulong addr,
|
|
ulong cnt)
|
|
{
|
|
int first_copy_size;
|
|
int last_copy_size;
|
|
int first_block;
|
|
int last_block;
|
|
int nbr_mid_blocks;
|
|
uchar memmap_value;
|
|
ulong i;
|
|
uchar* src_org;
|
|
uchar* dst_org;
|
|
int ret = ERR_OK;
|
|
|
|
src_org = src;
|
|
dst_org = (uchar*)addr;
|
|
|
|
first_block = addr / 512;
|
|
last_block = (addr + cnt) / 512;
|
|
nbr_mid_blocks = last_block - first_block - 1;
|
|
|
|
first_copy_size = 512 - (addr % 512);
|
|
last_copy_size = (addr + cnt) % 512;
|
|
|
|
debug("\ncopy first block: (1) %lX -> %lX 0x200 bytes, "
|
|
"(2) %lX -> %lX 0x%X bytes, (3) %lX -> %lX 0x200 bytes\n",
|
|
(ulong)(first_block * 512),
|
|
(ulong)COPY_BUFFER_LOCATION,
|
|
(ulong)src,
|
|
(ulong)(COPY_BUFFER_LOCATION + 512 - first_copy_size),
|
|
first_copy_size,
|
|
(ulong)COPY_BUFFER_LOCATION,
|
|
(ulong)(first_block * 512));
|
|
|
|
/* copy first block */
|
|
memcpy((void*)COPY_BUFFER_LOCATION,
|
|
(void*)(first_block * 512), 512);
|
|
memcpy((void*)(COPY_BUFFER_LOCATION + 512 - first_copy_size),
|
|
src, first_copy_size);
|
|
lpc2292_copy_buffer_to_flash(info, first_block * 512);
|
|
src += first_copy_size;
|
|
addr += first_copy_size;
|
|
|
|
/* copy middle blocks */
|
|
for (i = 0; i < nbr_mid_blocks; i++) {
|
|
debug("copy middle block: %lX -> %lX 512 bytes, "
|
|
"%lX -> %lX 512 bytes\n",
|
|
(ulong)src,
|
|
(ulong)COPY_BUFFER_LOCATION,
|
|
(ulong)COPY_BUFFER_LOCATION,
|
|
(ulong)addr);
|
|
|
|
memcpy((void*)COPY_BUFFER_LOCATION, src, 512);
|
|
lpc2292_copy_buffer_to_flash(info, addr);
|
|
src += 512;
|
|
addr += 512;
|
|
}
|
|
|
|
|
|
if (last_copy_size > 0) {
|
|
debug("copy last block: (1) %lX -> %lX 0x200 bytes, "
|
|
"(2) %lX -> %lX 0x%X bytes, (3) %lX -> %lX x200 bytes\n",
|
|
(ulong)(last_block * 512),
|
|
(ulong)COPY_BUFFER_LOCATION,
|
|
(ulong)src,
|
|
(ulong)(COPY_BUFFER_LOCATION),
|
|
last_copy_size,
|
|
(ulong)COPY_BUFFER_LOCATION,
|
|
(ulong)addr);
|
|
|
|
/* copy last block */
|
|
memcpy((void*)COPY_BUFFER_LOCATION,
|
|
(void*)(last_block * 512), 512);
|
|
memcpy((void*)COPY_BUFFER_LOCATION,
|
|
src, last_copy_size);
|
|
lpc2292_copy_buffer_to_flash(info, addr);
|
|
}
|
|
|
|
/* verify write */
|
|
memmap_value = GET8(MEMMAP);
|
|
|
|
disable_interrupts();
|
|
|
|
PUT8(MEMMAP, 01); /* we must make sure that initial 64
|
|
bytes are taken from flash when we
|
|
do the compare */
|
|
|
|
for (i = 0; i < cnt; i++) {
|
|
if (*dst_org != *src_org){
|
|
printf("Write failed. Byte %lX differs\n", i);
|
|
ret = ERR_PROG_ERROR;
|
|
break;
|
|
}
|
|
dst_org++;
|
|
src_org++;
|
|
}
|
|
|
|
PUT8(MEMMAP, memmap_value);
|
|
enable_interrupts();
|
|
|
|
return ret;
|
|
}
|