upstream u-boot with additional patches for our devices/boards:
https://lists.denx.de/pipermail/u-boot/2017-March/282789.html (AXP crashes) ;
Gbit ethernet patch for some LIME2 revisions ;
with SPI flash support
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
491 lines
12 KiB
491 lines
12 KiB
/*
|
|
* (C) Copyright 2000-2004
|
|
* 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>
|
|
|
|
#if CONFIG_SYS_MAX_FLASH_BANKS != 1
|
|
#error "CONFIG_SYS_MAX_FLASH_BANKS must be 1"
|
|
#endif
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
|
|
|
|
/*-----------------------------------------------------------------------
|
|
* 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);
|
|
static void flash_get_offsets (ulong base, flash_info_t * info);
|
|
|
|
#define ADDR0 0x5555
|
|
#define ADDR1 0x2aaa
|
|
#define FLASH_WORD_SIZE unsigned char
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
unsigned long flash_init (void)
|
|
{
|
|
unsigned long size_b0;
|
|
|
|
/* Init: no FLASHes known */
|
|
flash_info[0].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 */
|
|
/* Setup offsets */
|
|
flash_get_offsets (FLASH_BASE0_PRELIM, &flash_info[0]);
|
|
|
|
/* Monitor protection ON by default */
|
|
(void) flash_protect (FLAG_PROTECT_SET,
|
|
FLASH_BASE0_PRELIM,
|
|
FLASH_BASE0_PRELIM + monitor_flash_len - 1,
|
|
&flash_info[0]);
|
|
flash_info[0].size = size_b0;
|
|
|
|
return size_b0;
|
|
}
|
|
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
/*
|
|
* This implementation assumes that the flash chips are uniform sector
|
|
* devices. This is true for all likely JSE devices.
|
|
*/
|
|
static void flash_get_offsets (ulong base, flash_info_t * info)
|
|
{
|
|
unsigned idx;
|
|
unsigned long sector_size = info->size / info->sector_count;
|
|
|
|
for (idx = 0; idx < info->sector_count; idx += 1) {
|
|
info->start[idx] = base + (idx * sector_size);
|
|
}
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
void flash_print_info (flash_info_t * info)
|
|
{
|
|
int i;
|
|
int k;
|
|
int size;
|
|
int erased;
|
|
volatile unsigned long *flash;
|
|
|
|
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 ("ST Micro ");
|
|
break;
|
|
default:
|
|
printf ("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
/* (Reduced table of only parts expected in JSE boards.) */
|
|
switch (info->flash_id) {
|
|
case FLASH_MAN_AMD | FLASH_AM040:
|
|
printf ("AM29F040 (512 Kbit, uniform sector size)\n");
|
|
break;
|
|
case FLASH_MAN_STM | FLASH_AM040:
|
|
printf ("MM29W040W (512 Kbit, uniform sector size)\n");
|
|
break;
|
|
default:
|
|
printf ("Unknown Chip Type\n");
|
|
break;
|
|
}
|
|
|
|
printf (" Size: %ld KB in %d Sectors\n",
|
|
info->size >> 10, info->sector_count);
|
|
|
|
printf (" Sector Start Addresses:");
|
|
for (i = 0; i < info->sector_count; ++i) {
|
|
/*
|
|
* Check if whole sector is erased
|
|
*/
|
|
if (i != (info->sector_count - 1))
|
|
size = info->start[i + 1] - info->start[i];
|
|
else
|
|
size = info->start[0] + info->size - info->start[i];
|
|
erased = 1;
|
|
flash = (volatile unsigned long *) info->start[i];
|
|
size = size >> 2; /* divide by 4 for longword access */
|
|
for (k = 0; k < size; k++) {
|
|
if (*flash++ != 0xffffffff) {
|
|
erased = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if ((i % 5) == 0)
|
|
printf ("\n ");
|
|
printf (" %08lX%s%s",
|
|
info->start[i],
|
|
erased ? " E" : " ", 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)
|
|
{
|
|
short i;
|
|
FLASH_WORD_SIZE value;
|
|
ulong base = (ulong) addr;
|
|
volatile FLASH_WORD_SIZE *addr2 = (FLASH_WORD_SIZE *) addr;
|
|
|
|
/* Write auto select command: read Manufacturer ID */
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00900090;
|
|
|
|
value = addr2[0];
|
|
|
|
switch (value) {
|
|
case (FLASH_WORD_SIZE) AMD_MANUFACT:
|
|
info->flash_id = FLASH_MAN_AMD;
|
|
break;
|
|
case (FLASH_WORD_SIZE) FUJ_MANUFACT:
|
|
info->flash_id = FLASH_MAN_FUJ;
|
|
break;
|
|
case (FLASH_WORD_SIZE) SST_MANUFACT:
|
|
info->flash_id = FLASH_MAN_SST;
|
|
break;
|
|
case (FLASH_WORD_SIZE)STM_MANUFACT:
|
|
info->flash_id = FLASH_MAN_STM;
|
|
break;
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
info->sector_count = 0;
|
|
info->size = 0;
|
|
printf("Unknown flash manufacturer code: 0x%x\n", value);
|
|
return (0); /* no or unknown flash */
|
|
}
|
|
|
|
value = addr2[1]; /* device ID */
|
|
|
|
switch (value) {
|
|
case (FLASH_WORD_SIZE) AMD_ID_F040B:
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x0080000; /* => 512 ko */
|
|
break;
|
|
case (FLASH_WORD_SIZE) AMD_ID_LV040B:
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x0080000; /* => 512 ko */
|
|
break;
|
|
case (FLASH_WORD_SIZE)STM_ID_M29W040B: /* most likele JSE chip */
|
|
info->flash_id += FLASH_AM040;
|
|
info->sector_count = 8;
|
|
info->size = 0x0080000; /* => 512 ko */
|
|
break;
|
|
default:
|
|
info->flash_id = FLASH_UNKNOWN;
|
|
return (0); /* => no or unknown flash */
|
|
|
|
}
|
|
|
|
/* Calculate the sector offsets (Use JSE Optimized code). */
|
|
flash_get_offsets(base, info);
|
|
|
|
/* check for protected sectors */
|
|
for (i = 0; i < info->sector_count; i++) {
|
|
/* read sector protection at sector address, (A7 .. A0) = 0x02 */
|
|
/* D0 = 1 if protected */
|
|
addr2 = (volatile FLASH_WORD_SIZE *) (info->start[i]);
|
|
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST)
|
|
info->protect[i] = 0;
|
|
else
|
|
info->protect[i] = addr2[2] & 1;
|
|
}
|
|
|
|
/*
|
|
* Prevent writes to uninitialized FLASH.
|
|
*/
|
|
if (info->flash_id != FLASH_UNKNOWN) {
|
|
addr2 = (FLASH_WORD_SIZE *) info->start[0];
|
|
*addr2 = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
|
|
}
|
|
|
|
return (info->size);
|
|
}
|
|
|
|
int wait_for_DQ7 (flash_info_t * info, int sect)
|
|
{
|
|
ulong start, now, last;
|
|
volatile FLASH_WORD_SIZE *addr =
|
|
(FLASH_WORD_SIZE *) (info->start[sect]);
|
|
|
|
start = get_timer (0);
|
|
last = start;
|
|
while ((addr[0] & (FLASH_WORD_SIZE) 0x00800080) !=
|
|
(FLASH_WORD_SIZE) 0x00800080) {
|
|
if ((now = get_timer (start)) > CONFIG_SYS_FLASH_ERASE_TOUT) {
|
|
printf ("Timeout\n");
|
|
return -1;
|
|
}
|
|
/* show that we're waiting */
|
|
if ((now - last) > 1000) { /* every second */
|
|
putc ('.');
|
|
last = now;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*-----------------------------------------------------------------------
|
|
*/
|
|
|
|
int flash_erase (flash_info_t * info, int s_first, int s_last)
|
|
{
|
|
volatile FLASH_WORD_SIZE *addr = (FLASH_WORD_SIZE *) (info->start[0]);
|
|
volatile FLASH_WORD_SIZE *addr2;
|
|
int flag, prot, sect;
|
|
int i;
|
|
|
|
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) {
|
|
printf ("Can't erase unknown flash type - 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");
|
|
}
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts ();
|
|
|
|
/* Start erase on unprotected sectors */
|
|
for (sect = s_first; sect <= s_last; sect++) {
|
|
if (info->protect[sect] == 0) { /* not protected */
|
|
addr2 = (FLASH_WORD_SIZE *) (info->start[sect]);
|
|
printf ("Erasing sector %p\n", addr2); /* CLH */
|
|
|
|
if ((info->flash_id & FLASH_VENDMASK) ==
|
|
FLASH_MAN_SST) {
|
|
addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
|
|
addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr2[0] = (FLASH_WORD_SIZE) 0x00500050; /* block erase */
|
|
for (i = 0; i < 50; i++)
|
|
udelay (1000); /* wait 1 ms */
|
|
} else {
|
|
addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr[ADDR0] = (FLASH_WORD_SIZE) 0x00800080;
|
|
addr[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr2[0] = (FLASH_WORD_SIZE) 0x00300030; /* sector erase */
|
|
}
|
|
/*
|
|
* Wait for each sector to complete, it's more
|
|
* reliable. According to AMD Spec, you must
|
|
* issue all erase commands within a specified
|
|
* timeout. This has been seen to fail, especially
|
|
* if printf()s are included (for debug)!!
|
|
*/
|
|
wait_for_DQ7 (info, sect);
|
|
}
|
|
}
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts ();
|
|
|
|
/* wait at least 80us - let's wait 1 ms */
|
|
udelay (1000);
|
|
|
|
/* reset to read mode */
|
|
addr = (FLASH_WORD_SIZE *) info->start[0];
|
|
addr[0] = (FLASH_WORD_SIZE) 0x00F000F0; /* reset bank */
|
|
|
|
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
|
|
*/
|
|
if ((l = addr - wp) != 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);
|
|
}
|
|
|
|
if ((rc = write_word (info, wp, data)) != 0) {
|
|
return (rc);
|
|
}
|
|
wp += 4;
|
|
}
|
|
|
|
/*
|
|
* handle word aligned part
|
|
*/
|
|
while (cnt >= 4) {
|
|
data = 0;
|
|
for (i = 0; i < 4; ++i) {
|
|
data = (data << 8) | *src++;
|
|
}
|
|
if ((rc = write_word (info, wp, data)) != 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)
|
|
{
|
|
volatile FLASH_WORD_SIZE *addr2 =
|
|
(FLASH_WORD_SIZE *) (info->start[0]);
|
|
volatile FLASH_WORD_SIZE *dest2 = (FLASH_WORD_SIZE *) dest;
|
|
volatile FLASH_WORD_SIZE *data2 = (FLASH_WORD_SIZE *) & data;
|
|
ulong start;
|
|
int i;
|
|
|
|
/* Check if Flash is (sufficiently) erased */
|
|
if ((*((volatile FLASH_WORD_SIZE *) dest) &
|
|
(FLASH_WORD_SIZE) data) != (FLASH_WORD_SIZE) data) {
|
|
return (2);
|
|
}
|
|
|
|
for (i = 0; i < 4 / sizeof (FLASH_WORD_SIZE); i++) {
|
|
int flag;
|
|
|
|
/* Disable interrupts which might cause a timeout here */
|
|
flag = disable_interrupts ();
|
|
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00AA00AA;
|
|
addr2[ADDR1] = (FLASH_WORD_SIZE) 0x00550055;
|
|
addr2[ADDR0] = (FLASH_WORD_SIZE) 0x00A000A0;
|
|
|
|
dest2[i] = data2[i];
|
|
|
|
/* re-enable interrupts if necessary */
|
|
if (flag)
|
|
enable_interrupts ();
|
|
|
|
/* data polling for D7 */
|
|
start = get_timer (0);
|
|
while ((dest2[i] & (FLASH_WORD_SIZE) 0x00800080) !=
|
|
(data2[i] & (FLASH_WORD_SIZE) 0x00800080)) {
|
|
|
|
if (get_timer (start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
|
|
return (1);
|
|
}
|
|
}
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|