flash.c
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/*
* (C) Copyright 2000-2005
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* 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 <asm/ppc4xx.h>
#include <asm/processor.h>
#undef DEBUG
#ifdef DEBUG
#define DEBUGF(x...) printf(x)
#else
#define DEBUGF(x...)
#endif /* DEBUG */
/*
* 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 void flash_get_offsets(ulong base, flash_info_t * info);
unsigned long flash_init(void)
{
unsigned long size_b0, size_b1;
int i;
uint pbcr;
unsigned long base_b0, base_b1;
/* Init: no FLASHes known */
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
}
/* Static FLASH Bank configuration here - FIXME XXX */
size_b0 =
flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
if (flash_info[0].flash_id == FLASH_UNKNOWN) {
printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
size_b0, size_b0 << 20);
}
/* Only one bank */
if (CONFIG_SYS_MAX_FLASH_BANKS == 1) {
/* Setup offsets */
flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]);
/* Monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET,
CONFIG_SYS_MONITOR_BASE,
CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
&flash_info[0]);
#ifdef CONFIG_ENV_IS_IN_FLASH
(void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[0]);
(void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[0]);
#endif
size_b1 = 0;
flash_info[0].size = size_b0;
} else {
/* 2 banks */
size_b1 =
flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
&flash_info[1]);
/* Re-do sizing to get full correct info */
if (size_b1) {
mtdcr(EBC0_CFGADDR, PB0CR);
pbcr = mfdcr(EBC0_CFGDATA);
mtdcr(EBC0_CFGADDR, PB0CR);
base_b1 = -size_b1;
pbcr =
(pbcr & 0x0001ffff) | base_b1 |
(((size_b1 / 1024 / 1024) - 1) << 17);
mtdcr(EBC0_CFGDATA, pbcr);
/* printf("PB1CR = %x\n", pbcr); */
}
if (size_b0) {
mtdcr(EBC0_CFGADDR, PB1CR);
pbcr = mfdcr(EBC0_CFGDATA);
mtdcr(EBC0_CFGADDR, PB1CR);
base_b0 = base_b1 - size_b0;
pbcr =
(pbcr & 0x0001ffff) | base_b0 |
(((size_b0 / 1024 / 1024) - 1) << 17);
mtdcr(EBC0_CFGDATA, pbcr);
/* printf("PB0CR = %x\n", pbcr); */
}
size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]);
flash_get_offsets(base_b0, &flash_info[0]);
/* monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET,
base_b0 + size_b0 - monitor_flash_len,
base_b0 + size_b0 - 1, &flash_info[0]);
if (size_b1) {
/* Re-do sizing to get full correct info */
size_b1 =
flash_get_size((vu_long *) base_b1, &flash_info[1]);
flash_get_offsets(base_b1, &flash_info[1]);
/* monitor protection ON by default */
(void)flash_protect(FLAG_PROTECT_SET,
base_b1 + size_b1 -
monitor_flash_len,
base_b1 + size_b1 - 1,
&flash_info[1]);
/* monitor protection OFF by default (one is enough) */
(void)flash_protect(FLAG_PROTECT_CLEAR,
base_b0 + size_b0 -
monitor_flash_len,
base_b0 + size_b0 - 1,
&flash_info[0]);
} else {
flash_info[1].flash_id = FLASH_UNKNOWN;
flash_info[1].sector_count = -1;
}
flash_info[0].size = size_b0;
flash_info[1].size = size_b1;
} /* else 2 banks */
return (size_b0 + size_b1);
}
static void flash_get_offsets(ulong base, flash_info_t * info)
{
int i;
/* set up sector start address table */
if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
(info->flash_id == FLASH_AM040)) {
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00010000);
} else {
if (info->flash_id & FLASH_BTYPE) {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00004000;
info->start[2] = base + 0x00006000;
info->start[3] = base + 0x00008000;
for (i = 4; i < info->sector_count; i++) {
info->start[i] =
base + (i * 0x00010000) - 0x00030000;
}
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
for (; i >= 0; i--) {
info->start[i] = base + i * 0x00010000;
}
}
}
}