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/*
* (C) Copyright 2004-2005
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
* Add support for Am29F016D and dynamic switch setting.
*
* 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
*/
/*
* Modified 4/5/2001
* Wait for completion of each sector erase command issued
* 4/5/2001
* Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
*/
#include <common.h>
#include <ppc4xx.h>
#include <asm/processor.h>
#include <ppc440.h>
#include "bamboo.h"
#undef DEBUG
#ifdef DEBUG
#define DEBUGF(x...) printf(x)
#else
#define DEBUGF(x...)
#endif /* DEBUG */
flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*
* Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
*/
static unsigned long flash_addr_table[][CFG_MAX_FLASH_BANKS] = {
{0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
{0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66 */
{0x00000000, 0x00000000, 0x00000000}, /* 2:boot from nand flash */
{0x87F00000, 0x87F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
{0x87F00000, 0x87F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
{0x00000000, 0x00000000, 0x00000000}, /* 5:boot from */
{0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66 */
{0x00000000, 0x00000000, 0x00000000}, /* 7:boot from */
{0x87C00001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
};
/*
* include common flash code (for amcc boards)
*/
#include "../common/flash.c"
/*-----------------------------------------------------------------------
* Functions
*/
static ulong flash_get_size(vu_long * addr, flash_info_t * info);
static int write_word(flash_info_t * info, ulong dest, ulong data);
/*-----------------------------------------------------------------------
*/
unsigned long flash_init(void)
{
unsigned long total_b = 0;
unsigned long size_b[CFG_MAX_FLASH_BANKS];
unsigned short index = 0;
int i;
unsigned long val;
unsigned long ebc_boot_size;
unsigned long boot_selection;
mfsdr(sdr_pstrp0, val);
index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;
if ((index == 5) || (index == 7)) {
/*
* Boot Settings in IIC EEprom address 0xA8 or 0xA4
* Read Serial Device Strap Register1 in PPC440EP
*/
mfsdr(sdr_sdstp1, val);
boot_selection = val & SDR0_SDSTP1_BOOT_SEL_MASK;
ebc_boot_size = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
switch(boot_selection) {
case SDR0_SDSTP1_BOOT_SEL_EBC:
switch(ebc_boot_size) {
case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
index = 3;
break;
case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
index = 0;
break;
}
break;
case SDR0_SDSTP1_BOOT_SEL_PCI:
index = 1;
break;
case SDR0_SDSTP1_BOOT_SEL_NDFC:
index = 2;
break;
}
} else if (index == 0) {
if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE) {
index = 8; /* sram below op code flash -> new index 8 */
}
}
DEBUGF("\n");
DEBUGF("FLASH: Index: %d\n", index);
/* Init: no FLASHes known */
for (i = 0; i < CFG_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
flash_info[i].sector_count = -1;
flash_info[i].size = 0;
/* check whether the address is 0 */
if (flash_addr_table[index][i] == 0) {
continue;
}
/* call flash_get_size() to initialize sector address */
size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
&flash_info[i]);
flash_info[i].size = size_b[i];
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
i, size_b[i], size_b[i] << 20);
flash_info[i].sector_count = -1;
flash_info[i].size = 0;
}
/* Monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET, CFG_MONITOR_BASE,
CFG_MONITOR_BASE + CFG_MONITOR_LEN - 1,
&flash_info[i]);
#if defined(CFG_ENV_IS_IN_FLASH)
(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR,
CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
&flash_info[i]);
#if defined(CFG_ENV_IS_IN_FLASH) && defined(CFG_ENV_ADDR_REDUND)
(void)flash_protect(FLAG_PROTECT_SET, CFG_ENV_ADDR_REDUND,
CFG_ENV_ADDR_REDUND + CFG_ENV_SECT_SIZE - 1,
&flash_info[i]);
#endif
#endif
total_b += flash_info[i].size;
}
return total_b;
}
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