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/*
* (C) Copyright 2006 Embedded Artists AB <www.embeddedartists.com>
*
* Modified to use the routines in cpu/arm720t/lpc2292/flash.c 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>
#define SST_BASEADDR 0x80000000
#define SST_ADDR1 ((volatile ushort*)(SST_BASEADDR + (0x5555 << 1)))
#define SST_ADDR2 ((volatile ushort*)(SST_BASEADDR + (0x2AAA << 1)))
flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
extern int lpc2292_copy_buffer_to_flash(flash_info_t *, ulong);
extern int lpc2292_flash_erase(flash_info_t *, int, int);
extern int lpc2292_write_buff (flash_info_t *, uchar *, ulong, ulong);
/*-----------------------------------------------------------------------
*
*/
void write_word_sst(ulong addr, ushort data)
{
ushort tmp;
*SST_ADDR1 = 0x00AA;
*SST_ADDR2 = 0x0055;
*SST_ADDR1 = 0x00A0;
*((volatile ushort*)addr) = data;
/* do data polling */
do {
tmp = *((volatile ushort*)addr);
} while (tmp != data);
}
/*-----------------------------------------------------------------------
*/
ulong flash_init (void)
{
int j, k;
ulong size = 0;
ulong flashbase = 0;
flash_info[0].flash_id = (PHILIPS_LPC2292 & FLASH_VENDMASK);
flash_info[0].size = 0x003E000; /* 256 - 8 KB */
flash_info[0].sector_count = 17;
memset (flash_info[0].protect, 0, 17);
flashbase = 0x00000000;
for (j = 0, k = 0; j < 8; j++, k++) {
flash_info[0].start[k] = flashbase;
flashbase += 0x00002000;
}
for (j = 0; j < 2; j++, k++) {
flash_info[0].start[k] = flashbase;
flashbase += 0x00010000;
}
for (j = 0; j < 7; j++, k++) {
flash_info[0].start[k] = flashbase;
flashbase += 0x00002000;
}
size += flash_info[0].size;
flash_info[1].flash_id = (SST_MANUFACT & FLASH_VENDMASK);
flash_info[1].size = 0x00200000; /* 2 MB */
flash_info[1].sector_count = 512;
memset (flash_info[1].protect, 0, 512);
flashbase = SST_BASEADDR;
for (j=0; j<512; j++) {
flash_info[1].start[j] = flashbase;
flashbase += 0x1000; /* 4 KB sectors */
}
size += flash_info[1].size;
/* Protect monitor and environment sectors */
flash_protect (FLAG_PROTECT_SET,
0x0,
0x0 + monitor_flash_len - 1,
&flash_info[0]);
flash_protect (FLAG_PROTECT_SET,
CFG_ENV_ADDR,
CFG_ENV_ADDR + CFG_ENV_SIZE - 1,
&flash_info[0]);
return size;
}
/*-----------------------------------------------------------------------
*/
void flash_print_info (flash_info_t * info)
{
int i;
int erased = 0;
unsigned long j;
unsigned long count;
unsigned char *p;
switch (info->flash_id & FLASH_VENDMASK) {
case (SST_MANUFACT & FLASH_VENDMASK):
printf("SST: ");
break;
case (PHILIPS_LPC2292 & FLASH_VENDMASK):
printf("Philips: ");
break;
default:
printf ("Unknown Vendor ");
break;
}
printf (" Size: %ld KB in %d Sectors\n",
info->size >> 10, info->sector_count);
printf (" Sector Start Addresses:");
for (i = 0; i < info->sector_count; i++) {
if ((i % 5) == 0) {
printf ("\n ");
}
if (i < (info->sector_count - 1)) {
count = info->start[i+1] - info->start[i];
}
else {
count = info->start[0] + info->size - info->start[i];
}
p = (unsigned char*)(info->start[i]);
erased = 1;
for (j = 0; j < count; j++) {
if (*p != 0xFF) {
erased = 0;
break;
}
p++;
}
printf (" %08lX%s%s", info->start[i], info->protect[i] ? " RO" : " ",
erased ? " E" : " ");
}
printf ("\n");
}
int flash_erase_sst (flash_info_t * info, int s_first, int s_last)
{
int i;
for (i = s_first; i <= s_last; i++) {
*SST_ADDR1 = 0x00AA;
*SST_ADDR2 = 0x0055;
*SST_ADDR1 = 0x0080;
*SST_ADDR1 = 0x00AA;
*SST_ADDR2 = 0x0055;
*((volatile ushort*)(info->start[i])) = 0x0030;
/* wait for erase to finish */
udelay(25000);
}
return ERR_OK;
}
int flash_erase (flash_info_t * info, int s_first, int s_last)
{
switch (info->flash_id & FLASH_VENDMASK) {
case (SST_MANUFACT & FLASH_VENDMASK):
return flash_erase_sst(info, s_first, s_last);
case (PHILIPS_LPC2292 & FLASH_VENDMASK):
return lpc2292_flash_erase(info, s_first, s_last);
default:
return ERR_PROTECTED;
}
return ERR_PROTECTED;
}
/*-----------------------------------------------------------------------
* Copy memory to flash.
*
* cnt is in bytes
*/
int write_buff_sst (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
ushort tmp;
ulong i;
uchar* src_org;
uchar* dst_org;
ulong cnt_org = cnt;
int ret = ERR_OK;
src_org = src;
dst_org = (uchar*)addr;
if (addr & 1) { /* if odd address */
tmp = *((uchar*)(addr - 1)); /* little endian */
tmp |= (*src << 8);
write_word_sst(addr - 1, tmp);
addr += 1;
cnt -= 1;
src++;
}
while (cnt > 1) {
tmp = ((*(src+1)) << 8) + (*src); /* little endian */
write_word_sst(addr, tmp);
addr += 2;
src += 2;
cnt -= 2;
}
if (cnt > 0) {
tmp = (*((uchar*)(addr + 1))) << 8;
tmp |= *src;
write_word_sst(addr, tmp);
}
for (i = 0; i < cnt_org; i++) {
if (*dst_org != *src_org) {
printf("Write failed. Byte %lX differs\n", i);
ret = ERR_PROG_ERROR;
break;
}
dst_org++;
src_org++;
}
return ret;
}
int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
{
switch (info->flash_id & FLASH_VENDMASK) {
case (SST_MANUFACT & FLASH_VENDMASK):
return write_buff_sst(info, src, addr, cnt);
case (PHILIPS_LPC2292 & FLASH_VENDMASK):
return lpc2292_write_buff(info, src, addr, cnt);
default:
return ERR_PROG_ERROR;
}
return ERR_PROG_ERROR;
}
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