u-boot/board/svm_sc8xx/flash.c
Wolfgang Denk 4835324784 board/svm_sc8xx/flash.c: Fix GCC 4.6 build warning
Fix:
flash.c: In function 'write_word':
flash.c:542:15: warning: variable 'last' set but not used
[-Wunused-but-set-variable]

Signed-off-by: Wolfgang Denk <wd@denx.de>
2011-11-07 22:15:42 +01:00

683 lines
17 KiB
C

/*
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
*
* 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 <mpc8xx.h>
#ifndef CONFIG_ENV_ADDR
#define CONFIG_ENV_ADDR (CONFIG_SYS_FLASH_BASE + CONFIG_ENV_OFFSET)
#endif
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
/*-----------------------------------------------------------------------
* Functions
*/
static int write_word(flash_info_t *info, ulong dest, ulong data);
#ifdef CONFIG_BOOT_8B
static int my_in_8(unsigned char *addr);
static void my_out_8(unsigned char *addr, int val);
#endif
#ifdef CONFIG_BOOT_16B
static int my_in_be16(unsigned short *addr);
static void my_out_be16(unsigned short *addr, int val);
#endif
#ifdef CONFIG_BOOT_32B
static unsigned my_in_be32(unsigned *addr);
static void my_out_be32(unsigned *addr, int val);
#endif
/*-----------------------------------------------------------------------
*/
unsigned long flash_init(void)
{
volatile immap_t *immap = (immap_t *) CONFIG_SYS_IMMR;
volatile memctl8xx_t *memctl = &immap->im_memctl;
unsigned long size_b0, size_b1;
int i;
size_b0 = 0;
size_b1 = 0;
/* Init: no FLASHes known */
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i)
flash_info[i].flash_id = FLASH_UNKNOWN;
#ifdef CONFIG_SYS_DOC_BASE
#ifndef CONFIG_FEL8xx_AT
/* 32k bytes */
memctl->memc_or5 = (0xffff8000 | CONFIG_SYS_OR_TIMING_DOC);
memctl->memc_br5 = CONFIG_SYS_DOC_BASE | 0x401;
#else
/* 32k bytes */
memctl->memc_or3 = (0xffff8000 | CONFIG_SYS_OR_TIMING_DOC);
memctl->memc_br3 = CONFIG_SYS_DOC_BASE | 0x401;
#endif
#endif
#if defined(CONFIG_BOOT_8B)
size_b0 = 0x80000; /* 512 K */
flash_info[0].flash_id = FLASH_MAN_AMD | FLASH_AM040;
flash_info[0].sector_count = 8;
flash_info[0].size = 0x00080000;
/* set up sector start address table */
for (i = 0; i < flash_info[0].sector_count; i++)
flash_info[0].start[i] = 0x40000000 + (i * 0x10000);
/* protect all sectors */
for (i = 0; i < flash_info[0].sector_count; i++)
flash_info[0].protect[i] = 0x1;
#elif defined(CONFIG_BOOT_16B)
size_b0 = 0x400000; /* 4MB , assume AMD29LV320B */
flash_info[0].flash_id = FLASH_MAN_AMD | FLASH_AM320B;
flash_info[0].sector_count = 67;
flash_info[0].size = 0x00400000;
/* set up sector start address table */
flash_info[0].start[0] = 0x40000000;
flash_info[0].start[1] = 0x40000000 + 0x4000;
flash_info[0].start[2] = 0x40000000 + 0x6000;
flash_info[0].start[3] = 0x40000000 + 0x8000;
for (i = 4; i < flash_info[0].sector_count; i++) {
flash_info[0].start[i] =
0x40000000 + 0x10000 + ((i - 4) * 0x10000);
}
/* protect all sectors */
for (i = 0; i < flash_info[0].sector_count; i++)
flash_info[0].protect[i] = 0x1;
#endif
#ifdef CONFIG_BOOT_32B
/* 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);
}
size_b1 = flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
&flash_info[1]);
if (size_b1 > size_b0) {
printf("## ERROR: "
"Bank 1 (0x%08lx = %ld MB) > Bank 0 (0x%08lx = %ld MB)\n",
size_b1, size_b1 << 20, size_b0, size_b0 << 20);
flash_info[0].flash_id = FLASH_UNKNOWN;
flash_info[1].flash_id = FLASH_UNKNOWN;
flash_info[0].sector_count = -1;
flash_info[1].sector_count = -1;
flash_info[0].size = 0;
flash_info[1].size = 0;
return 0;
}
/* Remap FLASH according to real size */
memctl->memc_or0 = CONFIG_SYS_OR_TIMING_FLASH |
(-size_b0 & OR_AM_MSK);
memctl->memc_br0 = (CONFIG_SYS_FLASH_BASE & BR_BA_MSK) |
BR_MS_GPCM | BR_V;
/* Re-do sizing to get full correct info */
size_b0 = flash_get_size((vu_long *) CONFIG_SYS_FLASH_BASE,
&flash_info[0]);
flash_get_offsets(CONFIG_SYS_FLASH_BASE, &flash_info[0]);
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
/* monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_SYS_MONITOR_BASE,
CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
&flash_info[0]);
#endif
#ifdef CONFIG_ENV_IS_IN_FLASH
/* ENV protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
#endif
if (size_b1) {
memctl->memc_or1 = CONFIG_SYS_OR_TIMING_FLASH |
(-size_b1 & 0xFFFF8000);
memctl->memc_br1 = ((CONFIG_SYS_FLASH_BASE +
size_b0) & BR_BA_MSK) | BR_MS_GPCM | BR_V;
/* Re-do sizing to get full correct info */
size_b1 = flash_get_size((vu_long *)(CONFIG_SYS_FLASH_BASE +
size_b0), &flash_info[1]);
flash_get_offsets(CONFIG_SYS_FLASH_BASE + size_b0,
&flash_info[1]);
#if CONFIG_SYS_MONITOR_BASE >= CONFIG_SYS_FLASH_BASE
/* monitor protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_SYS_MONITOR_BASE,
CONFIG_SYS_MONITOR_BASE + monitor_flash_len - 1,
&flash_info[1]);
#endif
#ifdef CONFIG_ENV_IS_IN_FLASH
/* ENV protection ON by default */
flash_protect(FLAG_PROTECT_SET,
CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
&flash_info[1]);
#endif
} else {
memctl->memc_br1 = 0; /* invalidate bank */
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;
#endif /* CONFIG_BOOT_32B */
return size_b0 + size_b1;
}
void flash_print_info(flash_info_t *info)
{
int i;
if (info->flash_id == FLASH_UNKNOWN) {
printf("missing or unknown FLASH type\n");
return;
}
switch (info->flash_id & FLASH_VENDMASK) {
case FLASH_MAN_AMD:
printf("AMD ");
break;
case FLASH_MAN_FUJ:
printf("FUJITSU ");
break;
default:
printf("Unknown Vendor ");
break;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM400B:
printf("AM29LV400B (4 Mbit, bottom boot sect)\n");
break;
case FLASH_AM400T:
printf("AM29LV400T (4 Mbit, top boot sector)\n");
break;
case FLASH_AM800B:
printf("AM29LV800B (8 Mbit, bottom boot sect)\n");
break;
case FLASH_AM800T:
printf("AM29LV800T (8 Mbit, top boot sector)\n");
break;
case FLASH_AM160B:
printf("AM29LV160B (16 Mbit, bottom boot sect)\n");
break;
case FLASH_AM160T:
printf("AM29LV160T (16 Mbit, top boot sector)\n");
break;
case FLASH_AM320B:
printf("AM29LV320B (32 Mbit, bottom boot sect)\n");
break;
case FLASH_AM320T:
printf("AM29LV320T (32 Mbit, top boot sector)\n");
break;
default:
printf("Unknown Chip Type\n");
break;
}
printf(" Size: %ld MB in %d Sectors\n",
info->size >> 20, info->sector_count);
printf(" Sector Start Addresses:");
for (i = 0; i < info->sector_count; ++i) {
if ((i % 5) == 0)
printf("\n ");
printf(" %08lX%s",
info->start[i], info->protect[i] ? " (RO)" : " ");
}
printf("\n");
return;
}
/*
* The following code cannot be run from FLASH!
*/
int flash_erase(flash_info_t *info, int s_first, int s_last)
{
vu_long *addr = (vu_long *) (info->start[0]);
int flag, prot, sect, l_sect, in_mid, in_did;
ulong start, now, last;
if ((s_first < 0) || (s_first > s_last)) {
if (info->flash_id == FLASH_UNKNOWN)
printf("- missing\n");
else
printf("- no sectors to erase\n");
return 1;
}
if ((info->flash_id == FLASH_UNKNOWN) ||
(info->flash_id > FLASH_AMD_COMP)) {
printf("Can't erase unknown flash type %08lx - aborted\n",
info->flash_id);
return 1;
}
prot = 0;
for (sect = s_first; sect <= s_last; ++sect) {
if (info->protect[sect])
prot++;
}
if (prot) {
printf("- Warning: %d protected sectors will not be erased!\n",
prot);
} else {
printf("\n");
}
l_sect = -1;
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
#if defined(CONFIG_BOOT_8B)
my_out_8((unsigned char *)((ulong)addr + 0x555), 0xaa);
my_out_8((unsigned char *)((ulong)addr + 0x2aa), 0x55);
my_out_8((unsigned char *)((ulong)addr + 0x555), 0x90);
in_mid = my_in_8((unsigned char *)addr);
in_did = my_in_8((unsigned char *)((ulong)addr + 1));
printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
my_out_8((unsigned char *)addr, 0xf0);
udelay(1);
my_out_8((unsigned char *)((ulong)addr + 0x555), 0xaa);
my_out_8((unsigned char *)((ulong)addr + 0x2aa), 0x55);
my_out_8((unsigned char *)((ulong)addr + 0x555), 0x80);
my_out_8((unsigned char *)((ulong)addr + 0x555), 0xaa);
my_out_8((unsigned char *)((ulong)addr + 0x2aa), 0x55);
/* Start erase on unprotected sectors */
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr = (vu_long *) (info->start[sect]);
/*addr[0] = 0x00300030; */
my_out_8((unsigned char *)((ulong)addr), 0x30);
l_sect = sect;
}
}
#elif defined(CONFIG_BOOT_16B)
my_out_be16((unsigned short *)((ulong)addr + (0xaaa)), 0xaa);
my_out_be16((unsigned short *)((ulong)addr + (0x554)), 0x55);
my_out_be16((unsigned short *)((ulong)addr + (0xaaa)), 0x90);
in_mid = my_in_be16((unsigned short *)addr);
in_did = my_in_be16((unsigned short *)((ulong)addr + 2));
printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
my_out_be16((unsigned short *)addr, 0xf0);
udelay(1);
my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xaa);
my_out_be16((unsigned short *)((ulong)addr + 0x554), 0x55);
my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0x80);
my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xaa);
my_out_be16((unsigned short *)((ulong)addr + 0x554), 0x55);
/* Start erase on unprotected sectors */
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr = (vu_long *) (info->start[sect]);
my_out_be16((unsigned short *)((ulong)addr), 0x30);
l_sect = sect;
}
}
#elif defined(CONFIG_BOOT_32B)
my_out_be32((unsigned *)((ulong)addr + 0x1554), 0xaa);
my_out_be32((unsigned *)((ulong)addr + 0xaa8), 0x55);
my_out_be32((unsigned *)((ulong)addr + 0x1554), 0x90);
in_mid = my_in_be32((unsigned *)addr);
in_did = my_in_be32((unsigned *)((ulong)addr + 4));
printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
my_out_be32((unsigned *) addr, 0xf0);
udelay(1);
my_out_be32((unsigned *)((ulong)addr + 0x1554), 0xaa);
my_out_be32((unsigned *)((ulong)addr + 0xaa8), 0x55);
my_out_be32((unsigned *)((ulong)addr + 0x1554), 0x80);
my_out_be32((unsigned *)((ulong)addr + 0x1554), 0xaa);
my_out_be32((unsigned *)((ulong)addr + 0xaa8), 0x55);
/* Start erase on unprotected sectors */
for (sect = s_first; sect <= s_last; sect++) {
if (info->protect[sect] == 0) { /* not protected */
addr = (vu_long *) (info->start[sect]);
my_out_be32((unsigned *)((ulong)addr), 0x00300030);
l_sect = sect;
}
}
#else
#error CONFIG_BOOT_(size)B missing.
#endif
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* wait at least 80us - let's wait 1 ms */
udelay(1000);
/*
* We wait for the last triggered sector
*/
if (l_sect < 0)
goto DONE;
start = get_timer(0);
last = start;
addr = (vu_long *) (info->start[l_sect]);
#if defined(CONFIG_BOOT_8B)
while ((my_in_8((unsigned char *) addr) & 0x80) != 0x80)
#elif defined(CONFIG_BOOT_16B)
while ((my_in_be16((unsigned short *) addr) & 0x0080) != 0x0080)
#elif defined(CONFIG_BOOT_32B)
while ((my_in_be32((unsigned *) addr) & 0x00800080) != 0x00800080)
#else
#error CONFIG_BOOT_(size)B missing.
#endif
{
now = get_timer(start);
if (now > CONFIG_SYS_FLASH_ERASE_TOUT) {
printf("Timeout\n");
return 1;
}
/* show that we're waiting */
if ((now - last) > 1000) { /* every second */
putc('.');
last = now;
}
}
DONE:
/* reset to read mode */
addr = (volatile unsigned long *) info->start[0];
#if defined(CONFIG_BOOT_8B)
my_out_8((unsigned char *) addr, 0xf0);
#elif defined(CONFIG_BOOT_16B)
my_out_be16((unsigned short *) addr, 0x00f0);
#elif defined(CONFIG_BOOT_32B)
my_out_be32((unsigned *) addr, 0x00F000F0); /* reset bank */
#else
#error CONFIG_BOOT_(size)B missing.
#endif
printf(" done\n");
return 0;
}
/*
* Copy memory to flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
int write_buff(flash_info_t *info, uchar *src, ulong addr, ulong cnt)
{
ulong cp, wp, data;
int i, l, rc;
wp = (addr & ~3); /* get lower word aligned address */
/*
* handle unaligned start bytes
*/
l = addr - wp;
if (l != 0) {
data = 0;
for (i = 0, cp = wp; i < l; ++i, ++cp)
data = (data << 8) | (*(uchar *) cp);
for (; i < 4 && cnt > 0; ++i) {
data = (data << 8) | *src++;
--cnt;
++cp;
}
for (; cnt == 0 && i < 4; ++i, ++cp)
data = (data << 8) | (*(uchar *) cp);
rc = write_word(info, wp, data);
if (rc != 0)
return rc;
wp += 4;
}
/*
* handle word aligned part
*/
while (cnt >= 4) {
data = 0;
for (i = 0; i < 4; ++i)
data = (data << 8) | *src++;
rc = write_word(info, wp, data);
if (rc != 0)
return rc;
wp += 4;
cnt -= 4;
}
if (cnt == 0)
return 0;
/*
* handle unaligned tail bytes
*/
data = 0;
for (i = 0, cp = wp; i < 4 && cnt > 0; ++i, ++cp) {
data = (data << 8) | *src++;
--cnt;
}
for (; i < 4; ++i, ++cp)
data = (data << 8) | (*(uchar *) cp);
return write_word(info, wp, data);
}
/*
* Write a word to Flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
static int write_word(flash_info_t *info, ulong dest, ulong data)
{
ulong addr = (ulong) (info->start[0]);
ulong start;
int flag;
ulong i;
int data_short[2];
/* Check if Flash is (sufficiently) erased */
if (((ulong)*(ulong *)dest & data) != data)
return 2;
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
#if defined(CONFIG_BOOT_8B)
#ifdef DEBUG
{
int in_mid, in_did;
my_out_8((unsigned char *) (addr + 0x555), 0xaa);
my_out_8((unsigned char *) (addr + 0x2aa), 0x55);
my_out_8((unsigned char *) (addr + 0x555), 0x90);
in_mid = my_in_8((unsigned char *) addr);
in_did = my_in_8((unsigned char *) (addr + 1));
printf(" man ID=0x%x, dev ID=0x%x.\n", in_mid, in_did);
my_out_8((unsigned char *) addr, 0xf0);
udelay(1);
}
#endif
{
int data_ch[4];
data_ch[0] = (int) ((data >> 24) & 0xff);
data_ch[1] = (int) ((data >> 16) & 0xff);
data_ch[2] = (int) ((data >> 8) & 0xff);
data_ch[3] = (int) (data & 0xff);
for (i = 0; i < 4; i++) {
my_out_8((unsigned char *) (addr + 0x555), 0xaa);
my_out_8((unsigned char *) (addr + 0x2aa), 0x55);
my_out_8((unsigned char *) (addr + 0x555), 0xa0);
my_out_8((unsigned char *) (dest + i), data_ch[i]);
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
start = get_timer(0);
while ((my_in_8((unsigned char *)(dest + i))) !=
(data_ch[i])) {
if (get_timer(start) >
CONFIG_SYS_FLASH_WRITE_TOUT) {
return 1;
}
}
} /* for */
}
#elif defined(CONFIG_BOOT_16B)
data_short[0] = (int) (data >> 16) & 0xffff;
data_short[1] = (int) data & 0xffff;
for (i = 0; i < 2; i++) {
my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xaa);
my_out_be16((unsigned short *)((ulong)addr + 0x554), 0x55);
my_out_be16((unsigned short *)((ulong)addr + 0xaaa), 0xa0);
my_out_be16((unsigned short *)(dest + (i * 2)),
data_short[i]);
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
start = get_timer(0);
while ((my_in_be16((unsigned short *)(dest + (i * 2)))) !=
(data_short[i])) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
return 1;
}
}
#elif defined(CONFIG_BOOT_32B)
addr[0x0555] = 0x00AA00AA;
addr[0x02AA] = 0x00550055;
addr[0x0555] = 0x00A000A0;
*((vu_long *)dest) = data;
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer(0);
while ((*((vu_long *)dest) & 0x00800080) != (data & 0x00800080)) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
return 1;
}
#endif
return 0;
}
#ifdef CONFIG_BOOT_8B
static int my_in_8(unsigned char *addr)
{
int ret;
__asm__ __volatile__("lbz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
return ret;
}
static void my_out_8(unsigned char *addr, int val)
{
__asm__ __volatile__("stb%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
}
#endif
#ifdef CONFIG_BOOT_16B
static int my_in_be16(unsigned short *addr)
{
int ret;
__asm__ __volatile__("lhz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
return ret;
}
static void my_out_be16(unsigned short *addr, int val)
{
__asm__ __volatile__("sth%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
}
#endif
#ifdef CONFIG_BOOT_32B
static unsigned my_in_be32(unsigned *addr)
{
unsigned ret;
__asm__ __volatile__("lwz%U1%X1 %0,%1; eieio":"=r"(ret):"m"(*addr));
return ret;
}
static void my_out_be32(unsigned *addr, int val)
{
__asm__ __volatile__("stw%U0%X0 %1,%0; eieio":"=m"(*addr):"r"(val));
}
#endif