upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
136 lines
3.5 KiB
136 lines
3.5 KiB
/*
|
|
* (C) Copyright 2005-2008 Samsung Electronis
|
|
* Kyungmin Park <kyungmin.park@samsung.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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/io.h>
|
|
#include <asm/string.h>
|
|
|
|
#include "onenand_ipl.h"
|
|
|
|
#define onenand_block_address(block) (block)
|
|
#define onenand_sector_address(page) (page << 2)
|
|
#define onenand_buffer_address() ((1 << 3) << 8)
|
|
#define onenand_bufferram_address(block) (0)
|
|
|
|
#ifdef __HAVE_ARCH_MEMCPY32
|
|
extern void *memcpy32(void *dest, void *src, int size);
|
|
#endif
|
|
|
|
/* read a page with ECC */
|
|
static inline int onenand_read_page(ulong block, ulong page,
|
|
u_char * buf, int pagesize)
|
|
{
|
|
unsigned long *base;
|
|
|
|
#ifndef __HAVE_ARCH_MEMCPY32
|
|
unsigned int offset, value;
|
|
unsigned long *p;
|
|
#endif
|
|
|
|
onenand_writew(onenand_block_address(block),
|
|
ONENAND_REG_START_ADDRESS1);
|
|
|
|
onenand_writew(onenand_bufferram_address(block),
|
|
ONENAND_REG_START_ADDRESS2);
|
|
|
|
onenand_writew(onenand_sector_address(page),
|
|
ONENAND_REG_START_ADDRESS8);
|
|
|
|
onenand_writew(onenand_buffer_address(),
|
|
ONENAND_REG_START_BUFFER);
|
|
|
|
onenand_writew(ONENAND_INT_CLEAR, ONENAND_REG_INTERRUPT);
|
|
|
|
onenand_writew(ONENAND_CMD_READ, ONENAND_REG_COMMAND);
|
|
|
|
#ifndef __HAVE_ARCH_MEMCPY32
|
|
p = (unsigned long *) buf;
|
|
#endif
|
|
base = (unsigned long *) (CONFIG_SYS_ONENAND_BASE + ONENAND_DATARAM);
|
|
|
|
while (!(READ_INTERRUPT() & ONENAND_INT_READ))
|
|
continue;
|
|
|
|
/* Check for invalid block mark */
|
|
if (page < 2 && (onenand_readw(ONENAND_SPARERAM) != 0xffff))
|
|
return 1;
|
|
|
|
#ifdef __HAVE_ARCH_MEMCPY32
|
|
/* 32 bytes boundary memory copy */
|
|
memcpy32(buf, base, pagesize);
|
|
#else
|
|
for (offset = 0; offset < (pagesize >> 2); offset++) {
|
|
value = *(base + offset);
|
|
*p++ = value;
|
|
}
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define ONENAND_START_PAGE 1
|
|
#define ONENAND_PAGES_PER_BLOCK 64
|
|
|
|
/**
|
|
* onenand_read_block - Read CONFIG_SYS_MONITOR_LEN from begining
|
|
* of OneNAND, skipping bad blocks
|
|
* @return 0 on success
|
|
*/
|
|
int onenand_read_block(unsigned char *buf)
|
|
{
|
|
int block;
|
|
int page = ONENAND_START_PAGE, offset = 0;
|
|
int pagesize = 0, erase_shift = 0;
|
|
int erasesize = 0, nblocks = 0;
|
|
|
|
if (onenand_readw(ONENAND_REG_TECHNOLOGY)) {
|
|
pagesize = 4096; /* MLC OneNAND has 4KiB pagesize */
|
|
erase_shift = 18;
|
|
} else {
|
|
pagesize = 2048;
|
|
erase_shift = 17;
|
|
}
|
|
|
|
erasesize = ONENAND_PAGES_PER_BLOCK * pagesize;
|
|
nblocks = (CONFIG_SYS_MONITOR_LEN + erasesize - 1) >> erase_shift;
|
|
|
|
/* NOTE: you must read page from page 1 of block 0 */
|
|
/* read the block page by page*/
|
|
for (block = 0; block < nblocks; block++) {
|
|
for (; page < ONENAND_PAGES_PER_BLOCK; page++) {
|
|
if (onenand_read_page(block, page, buf + offset,
|
|
pagesize)) {
|
|
/* This block is bad. Skip it
|
|
* and read next block */
|
|
offset -= page * pagesize;
|
|
nblocks++;
|
|
break;
|
|
}
|
|
offset += pagesize;
|
|
}
|
|
page = 0;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|