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u-boot/board/etin/debris/flash.c
Becky Bruce d35ae5a938 powerpc: Move duplicated BAT defines to mmu.h 
The BAT fields are architected; there's no need for these to be in
cpu-specific files.  Drop the duplication and move these to
include/asm-ppc/mmu.h.  Also, remove the BL_xxx defines that were only
used by the alaska board, and switch to using the BATU_BL_xxx defines
used by all the other boards.  The BL_ defines previously in use
had to be shifted into the proper position for use, which was inefficient.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
2009-02-10 00:27:40 +01:00

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/*
* board/eva/flash.c
*
* (C) Copyright 2002
* Sangmoon Kim, Etin Systems, dogoil@etinsys.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/processor.h>
#include <asm/pci_io.h>
#include <mpc824x.h>
#include <asm/mmu.h>
int (*do_flash_erase)(flash_info_t*, uint32_t, uint32_t);
int (*write_dword)(flash_info_t*, ulong, uint64_t);
typedef uint64_t cfi_word;
#define cfi_read(flash, addr) *((volatile cfi_word*)(flash->start[0] + addr))
#define cfi_write(flash, val, addr) \
move64((cfi_word*)&val, \
(cfi_word*)(flash->start[0] + addr))
#define CMD(x) ((((cfi_word)x)<<48)|(((cfi_word)x)<<32)|(((cfi_word)x)<<16)|(((cfi_word)x)))
static void write32(unsigned long addr, uint32_t value)
{
*(volatile uint32_t*)(addr) = value;
asm volatile("sync");
}
static uint32_t read32(unsigned long addr)
{
uint32_t value;
value = *(volatile uint32_t*)addr;
asm volatile("sync");
return value;
}
static cfi_word cfi_cmd(flash_info_t *flash, uint8_t cmd, uint32_t addr)
{
uint32_t base = flash->start[0];
uint32_t val=(cmd << 16) | cmd;
addr <<= 3;
write32(base + addr, val);
return addr;
}
static uint16_t cfi_read_query(flash_info_t *flash, uint32_t addr)
{
uint32_t base = flash->start[0];
addr <<= 3;
return (uint16_t)read32(base + addr);
}
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
static void move64(uint64_t *src, uint64_t *dest)
{
asm volatile("lfd 0, 0(3)\n\t" /* fpr0 = *scr */
"stfd 0, 0(4)" /* *dest = fpr0 */
: : : "fr0" ); /* Clobbers fr0 */
return;
}
static int cfi_write_dword(flash_info_t *flash, ulong dest, cfi_word data)
{
unsigned long start;
cfi_word status = 0;
status = cfi_read(flash, dest);
data &= status;
cfi_cmd(flash, 0x40, 0);
cfi_write(flash, data, dest);
udelay(10);
start = get_timer (0);
for(;;) {
status = cfi_read(flash, dest);
status &= CMD(0x80);
if(status == CMD(0x80))
break;
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
cfi_cmd(flash, 0xff, 0);
return 1;
}
udelay(1);
}
cfi_cmd(flash, 0xff, 0);
return 0;
}
static int jedec_write_dword (flash_info_t *flash, ulong dest, cfi_word data)
{
ulong start;
cfi_word status = 0;
status = cfi_read(flash, dest);
if(status != CMD(0xffff)) return 2;
cfi_cmd(flash, 0xaa, 0x555);
cfi_cmd(flash, 0x55, 0x2aa);
cfi_cmd(flash, 0xa0, 0x555);
cfi_write(flash, data, dest);
udelay(10);
start = get_timer (0);
status = ~data;
while(status != data) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
return 1;
status = cfi_read(flash, dest);
udelay(1);
}
return 0;
}
static __inline__ unsigned long get_msr(void)
{
unsigned long msr;
__asm__ __volatile__ ("mfmsr %0" : "=r" (msr) :);
return msr;
}
static __inline__ void set_msr(unsigned long msr)
{
__asm__ __volatile__ ("mtmsr %0" : : "r" (msr));
}
int write_buff (flash_info_t *flash, uchar *src, ulong addr, ulong cnt)
{
ulong wp;
int i, s, l, rc;
cfi_word data;
uint8_t *t = (uint8_t*)&data;
unsigned long base = flash->start[0];
uint32_t msr;
if (flash->flash_id == FLASH_UNKNOWN)
return 4;
if (cnt == 0)
return 0;
addr -= base;
msr = get_msr();
set_msr(msr|MSR_FP);
wp = (addr & ~7); /* get lower word aligned address */
if((addr-wp) != 0) {
data = cfi_read(flash, wp);
s = addr & 7;
l = ( cnt < (8-s) ) ? cnt : (8-s);
for(i = 0; i < l; i++)
t[s+i] = *src++;
if ((rc = write_dword(flash, wp, data)) != 0)
goto DONE;
wp += 8;
cnt -= l;
}
while (cnt >= 8) {
for (i = 0; i < 8; i++)
t[i] = *src++;
if ((rc = write_dword(flash, wp, data)) != 0)
goto DONE;
wp += 8;
cnt -= 8;
}
if (cnt == 0) {
rc = 0;
goto DONE;
}
data = cfi_read(flash, wp);
for(i = 0; i < cnt; i++)
t[i] = *src++;
rc = write_dword(flash, wp, data);
DONE:
set_msr(msr);
return rc;
}
static int cfi_erase_oneblock(flash_info_t *flash, uint32_t sect)
{
int sa;
int flag;
ulong start, last, now;
cfi_word status;
flag = disable_interrupts();
sa = (flash->start[sect] - flash->start[0]);
write32(flash->start[sect], 0x00200020);
write32(flash->start[sect], 0x00d000d0);
if (flag)
enable_interrupts();
udelay(1000);
start = get_timer (0);
last = start;
for (;;) {
status = cfi_read(flash, sa);
status &= CMD(0x80);
if (status == CMD(0x80))
break;
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
cfi_cmd(flash, 0xff, 0);
printf ("Timeout\n");
return ERR_TIMOUT;
}
if ((now - last) > 1000) {
serial_putc ('.');
last = now;
}
udelay(10);
}
cfi_cmd(flash, 0xff, 0);
return ERR_OK;
}
static int cfi_erase(flash_info_t *flash, uint32_t s_first, uint32_t s_last)
{
int sect;
int rc = ERR_OK;
for (sect = s_first; sect <= s_last; sect++) {
if (flash->protect[sect] == 0) {
rc = cfi_erase_oneblock(flash, sect);
if (rc != ERR_OK) break;
}
}
printf (" done\n");
return rc;
}
static int jedec_erase(flash_info_t *flash, uint32_t s_first, uint32_t s_last)
{
int sect;
cfi_word status;
int sa = -1;
int flag;
ulong start, last, now;
flag = disable_interrupts();
cfi_cmd(flash, 0xaa, 0x555);
cfi_cmd(flash, 0x55, 0x2aa);
cfi_cmd(flash, 0x80, 0x555);
cfi_cmd(flash, 0xaa, 0x555);
cfi_cmd(flash, 0x55, 0x2aa);
for ( sect = s_first; sect <= s_last; sect++) {
if (flash->protect[sect] == 0) {
sa = flash->start[sect] - flash->start[0];
write32(flash->start[sect], 0x00300030);
}
}
if (flag)
enable_interrupts();
if (sa < 0)
goto DONE;
udelay (1000);
start = get_timer (0);
last = start;
for(;;) {
status = cfi_read(flash, sa);
if (status == CMD(0xffff))
break;
if ((now = get_timer(start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
printf ("Timeout\n");
return ERR_TIMOUT;
}
if ((now - last) > 1000) {
serial_putc ('.');
last = now;
}
udelay(10);
}
DONE:
cfi_cmd(flash, 0xf0, 0);
printf (" done\n");
return ERR_OK;
}
int flash_erase (flash_info_t *flash, int s_first, int s_last)
{
int sect;
int prot;
if ((s_first < 0) || (s_first > s_last)) {
if (flash->flash_id == FLASH_UNKNOWN)
printf ("- missing\n");
else
printf ("- no sectors to erase\n");
return ERR_NOT_ERASED;
}
if (flash->flash_id == FLASH_UNKNOWN) {
printf ("Can't erase unknown flash type - aborted\n");
return ERR_NOT_ERASED;
}
prot = 0;
for (sect = s_first; sect <= s_last; sect++)
if (flash->protect[sect]) prot++;
if (prot)
printf ("- Warning: %d protected sectors will not be erased!\n",
prot);
else
printf ("\n");
return do_flash_erase(flash, s_first, s_last);
}
struct jedec_flash_info {
const uint16_t mfr_id;
const uint16_t dev_id;
const char *name;
const int DevSize;
const int InterfaceDesc;
const int NumEraseRegions;
const ulong regions[4];
};
#define ERASEINFO(size,blocks) (size<<8)|(blocks-1)
#define SIZE_1MiB 20
#define SIZE_2MiB 21
#define SIZE_4MiB 22
static const struct jedec_flash_info jedec_table[] = {
{
mfr_id: (uint16_t)AMD_MANUFACT,
dev_id: (uint16_t)AMD_ID_LV800T,
name: "AMD AM29LV800T",
DevSize: SIZE_1MiB,
NumEraseRegions: 4,
regions: {ERASEINFO(0x10000,15),
ERASEINFO(0x08000,1),
ERASEINFO(0x02000,2),
ERASEINFO(0x04000,1)
}
}, {
mfr_id: (uint16_t)AMD_MANUFACT,
dev_id: (uint16_t)AMD_ID_LV800B,
name: "AMD AM29LV800B",
DevSize: SIZE_1MiB,
NumEraseRegions: 4,
regions: {ERASEINFO(0x10000,15),
ERASEINFO(0x08000,1),
ERASEINFO(0x02000,2),
ERASEINFO(0x04000,1)
}
}, {
mfr_id: (uint16_t)AMD_MANUFACT,
dev_id: (uint16_t)AMD_ID_LV160T,
name: "AMD AM29LV160T",
DevSize: SIZE_2MiB,
NumEraseRegions: 4,
regions: {ERASEINFO(0x10000,31),
ERASEINFO(0x08000,1),
ERASEINFO(0x02000,2),
ERASEINFO(0x04000,1)
}
}, {
mfr_id: (uint16_t)AMD_MANUFACT,
dev_id: (uint16_t)AMD_ID_LV160B,
name: "AMD AM29LV160B",
DevSize: SIZE_2MiB,
NumEraseRegions: 4,
regions: {ERASEINFO(0x04000,1),
ERASEINFO(0x02000,2),
ERASEINFO(0x08000,1),
ERASEINFO(0x10000,31)
}
}, {
mfr_id: (uint16_t)AMD_MANUFACT,
dev_id: (uint16_t)AMD_ID_LV320T,
name: "AMD AM29LV320T",
DevSize: SIZE_4MiB,
NumEraseRegions: 2,
regions: {ERASEINFO(0x10000,63),
ERASEINFO(0x02000,8)
}
}, {
mfr_id: (uint16_t)AMD_MANUFACT,
dev_id: (uint16_t)AMD_ID_LV320B,
name: "AMD AM29LV320B",
DevSize: SIZE_4MiB,
NumEraseRegions: 2,
regions: {ERASEINFO(0x02000,8),
ERASEINFO(0x10000,63)
}
}
};
static ulong cfi_init(uint32_t base, flash_info_t *flash)
{
int sector;
int block;
int block_count;
int offset = 0;
int reverse = 0;
int primary;
int mfr_id;
int dev_id;
flash->start[0] = base;
cfi_cmd(flash, 0xF0, 0);
cfi_cmd(flash, 0x98, 0);
if ( !( cfi_read_query(flash, 0x10) == 'Q' &&
cfi_read_query(flash, 0x11) == 'R' &&
cfi_read_query(flash, 0x12) == 'Y' )) {
cfi_cmd(flash, 0xff, 0);
return 0;
}
flash->size = 1 << cfi_read_query(flash, 0x27);
flash->size *= 4;
block_count = cfi_read_query(flash, 0x2c);
primary = cfi_read_query(flash, 0x15);
if ( cfi_read_query(flash, primary + 4) == 0x30)
reverse = (cfi_read_query(flash, 0x1) & 0x01);
else
reverse = (cfi_read_query(flash, primary+15) == 3);
flash->sector_count = 0;
for ( block = reverse ? block_count - 1 : 0;
reverse ? block >= 0 : block < block_count;
reverse ? block-- : block ++) {
int sector_size =
(cfi_read_query(flash, 0x2d + block*4+2) |
(cfi_read_query(flash, 0x2d + block*4+3) << 8)) << 8;
int sector_count =
(cfi_read_query(flash, 0x2d + block*4+0) |
(cfi_read_query(flash, 0x2d + block*4+1) << 8)) + 1;
for(sector = 0; sector < sector_count; sector++) {
flash->start[flash->sector_count++] = base + offset;
offset += sector_size * 4;
}
}
mfr_id = cfi_read_query(flash, 0x00);
dev_id = cfi_read_query(flash, 0x01);
cfi_cmd(flash, 0xff, 0);
flash->flash_id = (mfr_id << 16) | dev_id;
for (sector = 0; sector < flash->sector_count; sector++) {
write32(flash->start[sector], 0x00600060);
write32(flash->start[sector], 0x00d000d0);
}
cfi_cmd(flash, 0xff, 0);
for (sector = 0; sector < flash->sector_count; sector++)
flash->protect[sector] = 0;
do_flash_erase = cfi_erase;
write_dword = cfi_write_dword;
return flash->size;
}
static ulong jedec_init(unsigned long base, flash_info_t *flash)
{
int i;
int block, block_count;
int sector, offset;
int mfr_id, dev_id;
flash->start[0] = base;
cfi_cmd(flash, 0xF0, 0x000);
cfi_cmd(flash, 0xAA, 0x555);
cfi_cmd(flash, 0x55, 0x2AA);
cfi_cmd(flash, 0x90, 0x555);
mfr_id = cfi_read_query(flash, 0x000);
dev_id = cfi_read_query(flash, 0x0001);
cfi_cmd(flash, 0xf0, 0x000);
for(i=0; i<sizeof(jedec_table)/sizeof(struct jedec_flash_info); i++) {
if((jedec_table[i].mfr_id == mfr_id) &&
(jedec_table[i].dev_id == dev_id)) {
flash->flash_id = (mfr_id << 16) | dev_id;
flash->size = 1 << jedec_table[0].DevSize;
flash->size *= 4;
block_count = jedec_table[i].NumEraseRegions;
offset = 0;
flash->sector_count = 0;
for (block = 0; block < block_count; block++) {
int sector_size = jedec_table[i].regions[block];
int sector_count = (sector_size & 0xff) + 1;
sector_size >>= 8;
for (sector=0; sector<sector_count; sector++) {
flash->start[flash->sector_count++] =
base + offset;
offset += sector_size * 4;
}
}
break;
}
}
for (sector = 0; sector < flash->sector_count; sector++)
flash->protect[sector] = 0;
do_flash_erase = jedec_erase;
write_dword = jedec_write_dword;
return flash->size;
}
inline void mtibat1u(unsigned int x)
{
__asm__ __volatile__ ("mtspr 530, %0" :: "r" (x));
}
inline void mtibat1l(unsigned int x)
{
__asm__ __volatile__ ("mtspr 531, %0" :: "r" (x));
}
inline void mtdbat1u(unsigned int x)
{
__asm__ __volatile__ ("mtspr 538, %0" :: "r" (x));
}
inline void mtdbat1l(unsigned int x)
{
__asm__ __volatile__ ("mtspr 539, %0" :: "r" (x));
}
unsigned long flash_init (void)
{
unsigned long size = 0;
int i;
unsigned int msr;
/* BAT1 */
CONFIG_WRITE_WORD(ERCR3, 0x0C00000C);
CONFIG_WRITE_WORD(ERCR4, 0x0800000C);
msr = get_msr();
set_msr(msr & ~(MSR_IR | MSR_DR));
mtibat1l(0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT);
mtibat1u(0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP);
mtdbat1l(0x70000000 | BATL_PP_10 | BATL_CACHEINHIBIT);
mtdbat1u(0x70000000 | BATU_BL_256M | BATU_VS | BATU_VP);
set_msr(msr);
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++)
flash_info[i].flash_id = FLASH_UNKNOWN;
size = cfi_init(FLASH_BASE0_PRELIM, &flash_info[0]);
if (!size)
size = jedec_init(FLASH_BASE0_PRELIM, &flash_info[0]);
if (flash_info[0].flash_id == FLASH_UNKNOWN)
printf ("# Unknown FLASH on Bank 1 - Size = 0x%08lx = %ld MB\n",
size, size<<20);
return size;
}
void flash_print_info (flash_info_t *flash)
{
int i;
int k;
int size;
int erased;
volatile unsigned long *p;
if (flash->flash_id == FLASH_UNKNOWN) {
printf ("missing or unknown FLASH type\n");
flash_init();
}
if (flash->flash_id == FLASH_UNKNOWN) {
printf ("missing or unknown FLASH type\n");
return;
}
switch (((flash->flash_id) >> 16) & 0xff) {
case 0x01:
printf ("AMD ");
break;
case 0x04:
printf("FUJITSU ");
break;
case 0x20:
printf("STM ");
break;
case 0xBF:
printf("SST ");
break;
case 0x89:
case 0xB0:
printf("INTEL ");
break;
default:
printf ("Unknown Vendor ");
break;
}
switch ((flash->flash_id) & 0xffff) {
case (uint16_t)AMD_ID_LV800T:
printf ("AM29LV800T\n");
break;
case (uint16_t)AMD_ID_LV800B:
printf ("AM29LV800B\n");
break;
case (uint16_t)AMD_ID_LV160T:
printf ("AM29LV160T\n");
break;
case (uint16_t)AMD_ID_LV160B:
printf ("AM29LV160B\n");
break;
case (uint16_t)AMD_ID_LV320T:
printf ("AM29LV320T\n");
break;
case (uint16_t)AMD_ID_LV320B:
printf ("AM29LV320B\n");
break;
case (uint16_t)INTEL_ID_28F800C3T:
printf ("28F800C3T\n");
break;
case (uint16_t)INTEL_ID_28F800C3B:
printf ("28F800C3B\n");
break;
case (uint16_t)INTEL_ID_28F160C3T:
printf ("28F160C3T\n");
break;
case (uint16_t)INTEL_ID_28F160C3B:
printf ("28F160C3B\n");
break;
case (uint16_t)INTEL_ID_28F320C3T:
printf ("28F320C3T\n");
break;
case (uint16_t)INTEL_ID_28F320C3B:
printf ("28F320C3B\n");
break;
case (uint16_t)INTEL_ID_28F640C3T:
printf ("28F640C3T\n");
break;
case (uint16_t)INTEL_ID_28F640C3B:
printf ("28F640C3B\n");
break;
default:
printf ("Unknown Chip Type\n");
break;
}
if (flash->size >= (1 << 20)) {
printf (" Size: %ld MB in %d Sectors\n",
flash->size >> 20, flash->sector_count);
} else {
printf (" Size: %ld kB in %d Sectors\n",
flash->size >> 10, flash->sector_count);
}
printf (" Sector Start Addresses:");
for (i = 0; i < flash->sector_count; ++i) {
/* Check if whole sector is erased*/
if (i != (flash->sector_count-1))
size = flash->start[i+1] - flash->start[i];
else
size = flash->start[0] + flash->size - flash->start[i];
erased = 1;
p = (volatile unsigned long *)flash->start[i];
size = size >> 2; /* divide by 4 for longword access */
for (k=0; k<size; k++) {
if (*p++ != 0xffffffff) {
erased = 0;
break;
}
}
if ((i % 5) == 0)
printf ("\n ");
printf (" %08lX%s%s",
flash->start[i],
erased ? " E" : " ",
flash->protect[i] ? "RO " : " ");
}
printf ("\n");
}
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