mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 23:51:33 +00:00
Initial revision
This commit is contained in:
wdenk
parent
d9fd6ff598
commit
a17d0ff41d
1 changed files with 556 additions and 0 deletions
556
board/lwmon/flash.c
Normal file
556
board/lwmon/flash.c
Normal file
|
|
@ -0,0 +1,556 @@
|
|||
/*
|
||||
* (C) Copyright 2001
|
||||
* 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
|
||||
*/
|
||||
|
||||
/* #define DEBUG */
|
||||
|
||||
#include <common.h>
|
||||
#include <mpc8xx.h>
|
||||
|
||||
#if defined(CFG_ENV_IS_IN_FLASH)
|
||||
# ifndef CFG_ENV_ADDR
|
||||
# define CFG_ENV_ADDR (CFG_FLASH_BASE + CFG_ENV_OFFSET)
|
||||
# endif
|
||||
# ifndef CFG_ENV_SIZE
|
||||
# define CFG_ENV_SIZE CFG_ENV_SECT_SIZE
|
||||
# endif
|
||||
# ifndef CFG_ENV_SECT_SIZE
|
||||
# define CFG_ENV_SECT_SIZE CFG_ENV_SIZE
|
||||
# endif
|
||||
#endif
|
||||
|
||||
/*---------------------------------------------------------------------*/
|
||||
|
||||
flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
* Functions
|
||||
*/
|
||||
static ulong flash_get_size (vu_long *addr, flash_info_t *info);
|
||||
static int write_data (flash_info_t *info, ulong dest, ulong data);
|
||||
static void flash_get_offsets (ulong base, flash_info_t *info);
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
unsigned long flash_init (void)
|
||||
{
|
||||
volatile immap_t *immap = (immap_t *)CFG_IMMR;
|
||||
volatile memctl8xx_t *memctl = &immap->im_memctl;
|
||||
unsigned long size_b0, size_b1;
|
||||
int i;
|
||||
|
||||
/* Init: no FLASHes known */
|
||||
for (i=0; i<CFG_MAX_FLASH_BANKS; ++i) {
|
||||
flash_info[i].flash_id = FLASH_UNKNOWN;
|
||||
}
|
||||
|
||||
/* Static FLASH Bank configuration here - FIXME XXX */
|
||||
|
||||
debug ("\n## Get flash bank 1 size @ 0x%08x\n",FLASH_BASE0_PRELIM);
|
||||
|
||||
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: "
|
||||
"ID 0x%lx, Size = 0x%08lx = %ld MB\n",
|
||||
flash_info[0].flash_id,
|
||||
size_b0, size_b0<<20);
|
||||
}
|
||||
|
||||
debug ("## Get flash bank 2 size @ 0x%08x\n",FLASH_BASE1_PRELIM);
|
||||
|
||||
size_b1 = flash_get_size((vu_long *)FLASH_BASE1_PRELIM, &flash_info[1]);
|
||||
|
||||
debug ("## Prelim. Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
|
||||
|
||||
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);
|
||||
}
|
||||
|
||||
debug ("## Before remap: "
|
||||
"BR0: 0x%08x OR0: 0x%08x "
|
||||
"BR1: 0x%08x OR1: 0x%08x\n",
|
||||
memctl->memc_br0, memctl->memc_or0,
|
||||
memctl->memc_br1, memctl->memc_or1);
|
||||
|
||||
/* Remap FLASH according to real size */
|
||||
memctl->memc_or0 = (-size_b0 & 0xFFFF8000) | CFG_OR_TIMING_FLASH |
|
||||
OR_CSNT_SAM | OR_ACS_DIV1;
|
||||
memctl->memc_br0 = (CFG_FLASH_BASE & BR_BA_MSK) | BR_PS_32 | BR_V;
|
||||
|
||||
debug ("## BR0: 0x%08x OR0: 0x%08x\n",
|
||||
memctl->memc_br0, memctl->memc_or0);
|
||||
|
||||
/* Re-do sizing to get full correct info */
|
||||
size_b0 = flash_get_size((vu_long *)CFG_FLASH_BASE, &flash_info[0]);
|
||||
|
||||
flash_get_offsets (CFG_FLASH_BASE, &flash_info[0]);
|
||||
|
||||
flash_info[0].size = size_b0;
|
||||
|
||||
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
|
||||
/* monitor protection ON by default */
|
||||
flash_protect(FLAG_PROTECT_SET,
|
||||
CFG_MONITOR_BASE,
|
||||
CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
|
||||
&flash_info[0]);
|
||||
#endif
|
||||
|
||||
#ifdef CFG_ENV_IS_IN_FLASH
|
||||
/* ENV protection ON by default */
|
||||
flash_protect(FLAG_PROTECT_SET,
|
||||
CFG_ENV_ADDR,
|
||||
CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
|
||||
&flash_info[0]);
|
||||
#endif
|
||||
|
||||
if (size_b1) {
|
||||
memctl->memc_or1 = (-size_b1 & 0xFFFF8000) | CFG_OR_TIMING_FLASH |
|
||||
OR_CSNT_SAM | OR_ACS_DIV1;
|
||||
memctl->memc_br1 = ((CFG_FLASH_BASE + size_b0) & BR_BA_MSK) |
|
||||
BR_PS_32 | BR_V;
|
||||
|
||||
debug ("## BR1: 0x%08x OR1: 0x%08x\n",
|
||||
memctl->memc_br1, memctl->memc_or1);
|
||||
|
||||
/* Re-do sizing to get full correct info */
|
||||
size_b1 = flash_get_size((vu_long *)(CFG_FLASH_BASE + size_b0),
|
||||
&flash_info[1]);
|
||||
|
||||
flash_info[1].size = size_b1;
|
||||
|
||||
flash_get_offsets (CFG_FLASH_BASE + size_b0, &flash_info[1]);
|
||||
|
||||
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE
|
||||
/* monitor protection ON by default */
|
||||
flash_protect(FLAG_PROTECT_SET,
|
||||
CFG_MONITOR_BASE,
|
||||
CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
|
||||
&flash_info[1]);
|
||||
#endif
|
||||
|
||||
#ifdef CFG_ENV_IS_IN_FLASH
|
||||
/* ENV protection ON by default */
|
||||
flash_protect(FLAG_PROTECT_SET,
|
||||
CFG_ENV_ADDR,
|
||||
CFG_ENV_ADDR+CFG_ENV_SECT_SIZE-1,
|
||||
&flash_info[1]);
|
||||
#endif
|
||||
} else {
|
||||
memctl->memc_br1 = 0; /* invalidate bank */
|
||||
memctl->memc_or1 = 0; /* invalidate bank */
|
||||
|
||||
debug ("## DISABLE BR1: 0x%08x OR1: 0x%08x\n",
|
||||
memctl->memc_br1, memctl->memc_or1);
|
||||
|
||||
flash_info[1].flash_id = FLASH_UNKNOWN;
|
||||
flash_info[1].sector_count = -1;
|
||||
flash_info[1].size = 0;
|
||||
}
|
||||
|
||||
debug ("## Final Flash bank sizes: %08lx + 0x%08lx\n",size_b0,size_b1);
|
||||
|
||||
return (size_b0 + size_b1);
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/
|
||||
static void flash_get_offsets (ulong base, flash_info_t *info)
|
||||
{
|
||||
int i;
|
||||
|
||||
if (info->flash_id == FLASH_UNKNOWN) {
|
||||
return;
|
||||
}
|
||||
|
||||
switch (info->flash_id & FLASH_VENDMASK) {
|
||||
case FLASH_MAN_INTEL:
|
||||
for (i = 0; i < info->sector_count; i++) {
|
||||
info->start[i] = base;
|
||||
base += 0x00020000 * 2; /* 128k * 2 chips per bank */
|
||||
}
|
||||
return;
|
||||
|
||||
default:
|
||||
printf ("Don't know sector ofsets for flash type 0x%lx\n",
|
||||
info->flash_id);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/
|
||||
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;
|
||||
case FLASH_MAN_SST: printf ("SST "); break;
|
||||
case FLASH_MAN_STM: printf ("STM "); break;
|
||||
case FLASH_MAN_INTEL: printf ("Intel "); break;
|
||||
case FLASH_MAN_MT: printf ("MT "); break;
|
||||
default: printf ("Unknown Vendor "); break;
|
||||
}
|
||||
|
||||
switch (info->flash_id & FLASH_TYPEMASK) {
|
||||
case FLASH_28F320J3A: printf ("28F320J3A (32Mbit = 128K x 32)\n");
|
||||
break;
|
||||
case FLASH_28F640J3A: printf ("28F640J3A (64Mbit = 128K x 64)\n");
|
||||
break;
|
||||
case FLASH_28F128J3A: printf ("28F128J3A (128Mbit = 128K x 128)\n");
|
||||
break;
|
||||
default: printf ("Unknown Chip Type\n");
|
||||
break;
|
||||
}
|
||||
|
||||
if (info->size >= (1 << 20)) {
|
||||
i = 20;
|
||||
} else {
|
||||
i = 10;
|
||||
}
|
||||
printf (" Size: %ld %cB in %d Sectors\n",
|
||||
info->size >> i,
|
||||
(i == 20) ? 'M' : 'k',
|
||||
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!
|
||||
*/
|
||||
|
||||
static ulong flash_get_size (vu_long *addr, flash_info_t *info)
|
||||
{
|
||||
ulong value;
|
||||
|
||||
/* Read Manufacturer ID */
|
||||
addr[0] = 0x00900090;
|
||||
value = addr[0];
|
||||
|
||||
debug ("Manuf. ID @ 0x%08lx: 0x%08lx\n", (ulong)addr, value);
|
||||
|
||||
switch (value) {
|
||||
case AMD_MANUFACT:
|
||||
info->flash_id = FLASH_MAN_AMD;
|
||||
break;
|
||||
case FUJ_MANUFACT:
|
||||
info->flash_id = FLASH_MAN_FUJ;
|
||||
break;
|
||||
case SST_MANUFACT:
|
||||
info->flash_id = FLASH_MAN_SST;
|
||||
break;
|
||||
case STM_MANUFACT:
|
||||
info->flash_id = FLASH_MAN_STM;
|
||||
break;
|
||||
case INTEL_MANUFACT:
|
||||
info->flash_id = FLASH_MAN_INTEL;
|
||||
break;
|
||||
default:
|
||||
info->flash_id = FLASH_UNKNOWN;
|
||||
info->sector_count = 0;
|
||||
info->size = 0;
|
||||
addr[0] = 0x00FF00FF; /* restore read mode */
|
||||
return (0); /* no or unknown flash */
|
||||
}
|
||||
|
||||
value = addr[1]; /* device ID */
|
||||
|
||||
debug ("Device ID @ 0x%08lx: 0x%08lx\n", (ulong)(&addr[1]), value);
|
||||
|
||||
switch (value) {
|
||||
case INTEL_ID_28F320J3A:
|
||||
info->flash_id += FLASH_28F320J3A;
|
||||
info->sector_count = 32;
|
||||
info->size = 0x00400000 * 2;
|
||||
break; /* => 8 MB */
|
||||
|
||||
case INTEL_ID_28F640J3A:
|
||||
info->flash_id += FLASH_28F640J3A;
|
||||
info->sector_count = 64;
|
||||
info->size = 0x00800000 * 2;
|
||||
break; /* => 16 MB */
|
||||
|
||||
case INTEL_ID_28F128J3A:
|
||||
info->flash_id += FLASH_28F128J3A;
|
||||
info->sector_count = 128;
|
||||
info->size = 0x01000000 * 2;
|
||||
break; /* => 32 MB */
|
||||
|
||||
default:
|
||||
info->flash_id = FLASH_UNKNOWN;
|
||||
addr[0] = 0x00FF00FF; /* restore read mode */
|
||||
return (0); /* => no or unknown flash */
|
||||
|
||||
}
|
||||
|
||||
if (info->sector_count > CFG_MAX_FLASH_SECT) {
|
||||
printf ("** ERROR: sector count %d > max (%d) **\n",
|
||||
info->sector_count, CFG_MAX_FLASH_SECT);
|
||||
info->sector_count = CFG_MAX_FLASH_SECT;
|
||||
}
|
||||
|
||||
addr[0] = 0x00FF00FF; /* restore read mode */
|
||||
|
||||
return (info->size);
|
||||
}
|
||||
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
int flash_erase (flash_info_t *info, int s_first, int s_last)
|
||||
{
|
||||
int flag, prot, sect;
|
||||
ulong start, now, last;
|
||||
|
||||
debug ("flash_erase: first: %d last: %d\n", s_first, s_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_VENDMASK) != FLASH_MAN_INTEL) {
|
||||
printf ("Can erase only Intel flash types - aborted\n");
|
||||
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");
|
||||
}
|
||||
|
||||
start = get_timer (0);
|
||||
last = start;
|
||||
/* Start erase on unprotected sectors */
|
||||
for (sect = s_first; sect<=s_last; sect++) {
|
||||
if (info->protect[sect] == 0) { /* not protected */
|
||||
vu_long *addr = (vu_long *)(info->start[sect]);
|
||||
unsigned long status;
|
||||
|
||||
/* Disable interrupts which might cause a timeout here */
|
||||
flag = disable_interrupts();
|
||||
|
||||
*addr = 0x00500050; /* clear status register */
|
||||
*addr = 0x00200020; /* erase setup */
|
||||
*addr = 0x00D000D0; /* erase confirm */
|
||||
|
||||
/* re-enable interrupts if necessary */
|
||||
if (flag)
|
||||
enable_interrupts();
|
||||
|
||||
/* wait at least 80us - let's wait 1 ms */
|
||||
udelay (1000);
|
||||
|
||||
while (((status = *addr) & 0x00800080) != 0x00800080) {
|
||||
if ((now=get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
|
||||
printf ("Timeout\n");
|
||||
*addr = 0x00B000B0; /* suspend erase */
|
||||
*addr = 0x00FF00FF; /* reset to read mode */
|
||||
return 1;
|
||||
}
|
||||
|
||||
/* show that we're waiting */
|
||||
if ((now - last) > 1000) { /* every second */
|
||||
putc ('.');
|
||||
last = now;
|
||||
}
|
||||
}
|
||||
|
||||
*addr = 0x00FF00FF; /* reset to read mode */
|
||||
}
|
||||
}
|
||||
printf (" done\n");
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
* Copy memory to flash, returns:
|
||||
* 0 - OK
|
||||
* 1 - write timeout
|
||||
* 2 - Flash not erased
|
||||
* 4 - Flash not identified
|
||||
*/
|
||||
|
||||
#define FLASH_WIDTH 4 /* flash bus width in bytes */
|
||||
|
||||
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
|
||||
{
|
||||
ulong cp, wp, data;
|
||||
int i, l, rc;
|
||||
|
||||
if (info->flash_id == FLASH_UNKNOWN) {
|
||||
return 4;
|
||||
}
|
||||
|
||||
wp = (addr & ~(FLASH_WIDTH-1)); /* get lower FLASH_WIDTH aligned address */
|
||||
|
||||
/*
|
||||
* handle unaligned start bytes
|
||||
*/
|
||||
if ((l = addr - wp) != 0) {
|
||||
data = 0;
|
||||
for (i=0, cp=wp; i<l; ++i, ++cp) {
|
||||
data = (data << 8) | (*(uchar *)cp);
|
||||
}
|
||||
for (; i<FLASH_WIDTH && cnt>0; ++i) {
|
||||
data = (data << 8) | *src++;
|
||||
--cnt;
|
||||
++cp;
|
||||
}
|
||||
for (; cnt==0 && i<FLASH_WIDTH; ++i, ++cp) {
|
||||
data = (data << 8) | (*(uchar *)cp);
|
||||
}
|
||||
|
||||
if ((rc = write_data(info, wp, data)) != 0) {
|
||||
return (rc);
|
||||
}
|
||||
wp += FLASH_WIDTH;
|
||||
}
|
||||
|
||||
/*
|
||||
* handle FLASH_WIDTH aligned part
|
||||
*/
|
||||
while (cnt >= FLASH_WIDTH) {
|
||||
data = 0;
|
||||
for (i=0; i<FLASH_WIDTH; ++i) {
|
||||
data = (data << 8) | *src++;
|
||||
}
|
||||
if ((rc = write_data(info, wp, data)) != 0) {
|
||||
return (rc);
|
||||
}
|
||||
wp += FLASH_WIDTH;
|
||||
cnt -= FLASH_WIDTH;
|
||||
}
|
||||
|
||||
if (cnt == 0) {
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* handle unaligned tail bytes
|
||||
*/
|
||||
data = 0;
|
||||
for (i=0, cp=wp; i<FLASH_WIDTH && cnt>0; ++i, ++cp) {
|
||||
data = (data << 8) | *src++;
|
||||
--cnt;
|
||||
}
|
||||
for (; i<FLASH_WIDTH; ++i, ++cp) {
|
||||
data = (data << 8) | (*(uchar *)cp);
|
||||
}
|
||||
|
||||
return (write_data(info, wp, data));
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
* Write a word to Flash, returns:
|
||||
* 0 - OK
|
||||
* 1 - write timeout
|
||||
* 2 - Flash not erased
|
||||
*/
|
||||
static int write_data (flash_info_t *info, ulong dest, ulong data)
|
||||
{
|
||||
vu_long *addr = (vu_long *)dest;
|
||||
ulong status;
|
||||
ulong start;
|
||||
int flag;
|
||||
|
||||
/* Check if Flash is (sufficiently) erased */
|
||||
if ((*addr & data) != data) {
|
||||
return (2);
|
||||
}
|
||||
/* Disable interrupts which might cause a timeout here */
|
||||
flag = disable_interrupts();
|
||||
|
||||
*addr = 0x00400040; /* write setup */
|
||||
*addr = data;
|
||||
|
||||
/* re-enable interrupts if necessary */
|
||||
if (flag)
|
||||
enable_interrupts();
|
||||
|
||||
start = get_timer (0);
|
||||
|
||||
while (((status = *addr) & 0x00800080) != 0x00800080) {
|
||||
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
|
||||
*addr = 0x00FF00FF; /* restore read mode */
|
||||
return (1);
|
||||
}
|
||||
}
|
||||
|
||||
*addr = 0x00FF00FF; /* restore read mode */
|
||||
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*-----------------------------------------------------------------------
|
||||
*/
|
||||
Loading…
Reference in a new issue