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gerrit.devboardsforandroid.linaro.org / platform / external / u-boot / efc05ae13196e8ceaeff91a146168489c5d8cee5 / . / board / tqc / tqm5200 / cam5200_flash.c
blob: 4c8922f35f5c69a5203ab0c67487db2a7ab93034 [file] [log] [blame]
/*
* (C) Copyright 2006
* 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 <mpc5xxx.h>
#include <asm/processor.h>
#if defined(CONFIG_CAM5200) && defined(CONFIG_CAM5200_NIOSFLASH)
#if 0
#define DEBUGF(x...) printf(x)
#else
#define DEBUGF(x...)
#endif
#define swap16(x) __swab16(x)
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; /* info for FLASH chips */
/*
* CAM5200 is a TQM5200B based board. Additionally it also features
* a NIOS cpu. The NIOS CPU peripherals are accessible through MPC5xxx
* Local Bus on CS5. This includes 32 bit wide RAM and SRAM as well as
* 16 bit wide flash device. Big Endian order on a 32 bit CS5 makes
* access to flash chip slightly more complicated as additional byte
* swapping is necessary within each 16 bit wide flash 'word'.
*
* This driver's task is to handle both flash devices: 32 bit TQM5200B
* flash chip and 16 bit NIOS cpu flash chip. In the below
* flash_addr_table table we use least significant address bit to mark
* 16 bit flash bank and two sets of routines *_32 and *_16 to handle
* specifics of both flashes.
*/
static unsigned long flash_addr_table[][CONFIG_SYS_MAX_FLASH_BANKS] = {
{CONFIG_SYS_BOOTCS_START, CONFIG_SYS_CS5_START | 1}
};
/*-----------------------------------------------------------------------
* Functions
*/
static int write_word(flash_info_t * info, ulong dest, ulong data);
#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
static int write_word_32(flash_info_t * info, ulong dest, ulong data);
static int write_word_16(flash_info_t * info, ulong dest, ulong data);
static int flash_erase_32(flash_info_t * info, int s_first, int s_last);
static int flash_erase_16(flash_info_t * info, int s_first, int s_last);
static ulong flash_get_size_32(vu_long * addr, flash_info_t * info);
static ulong flash_get_size_16(vu_long * addr, flash_info_t * info);
#endif
void flash_print_info(flash_info_t * info)
{
int i, k;
int size, 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;
default:
printf("Unknown Vendor ");
break;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_S29GL128N:
printf ("S29GL128N (256 Mbit, uniform sector size)\n");
break;
case FLASH_AM320B:
printf ("29LV320B (32 Mbit, bottom boot sect)\n");
break;
case FLASH_AM320T:
printf ("29LV320T (32 Mbit, top boot sect)\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!
*/
#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
static ulong flash_get_size(vu_long * addr, flash_info_t * info)
{
DEBUGF("get_size: FLASH ADDR %08lx\n", addr);
/* bit 0 used for big flash marking */
if ((ulong)addr & 0x1)
return flash_get_size_16((vu_long *)((ulong)addr & 0xfffffffe), info);
else
return flash_get_size_32(addr, info);
}
static ulong flash_get_size_32(vu_long * addr, flash_info_t * info)
#else
static ulong flash_get_size(vu_long * addr, flash_info_t * info)
#endif
{
short i;
CONFIG_SYS_FLASH_WORD_SIZE value;
ulong base = (ulong) addr;
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
DEBUGF("get_size32: FLASH ADDR: %08x\n", (unsigned)addr);
/* Write auto select command: read Manufacturer ID */
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00900090;
udelay(1000);
value = addr2[0];
DEBUGF("FLASH MANUFACT: %x\n", value);
switch (value) {
case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
value = addr2[1]; /* device ID */
DEBUGF("\nFLASH DEVICEID: %x\n", value);
switch (value) {
case AMD_ID_MIRROR:
DEBUGF("Mirror Bit flash: addr[14] = %08lX addr[15] = %08lX\n",
addr[14], addr[15]);
switch(addr[14]) {
case AMD_ID_GL128N_2:
if (addr[15] != AMD_ID_GL128N_3) {
DEBUGF("Chip: S29GL128N -> unknown\n");
info->flash_id = FLASH_UNKNOWN;
} else {
DEBUGF("Chip: S29GL128N\n");
info->flash_id += FLASH_S29GL128N;
info->sector_count = 128;
info->size = 0x02000000;
}
break;
default:
info->flash_id = FLASH_UNKNOWN;
return(0);
}
break;
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
/* set up sector start address table */
for (i = 0; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00040000);
/* 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 CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
info->protect[i] = addr2[2] & 1;
}
/* issue bank reset to return to read mode */
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00F000F0;
return (info->size);
}
static int wait_for_DQ7_32(flash_info_t * info, int sect)
{
ulong start, now, last;
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
(CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
start = get_timer(0);
last = start;
while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
(CONFIG_SYS_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;
}
#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
int flash_erase(flash_info_t * info, int s_first, int s_last)
{
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) {
return flash_erase_16(info, s_first, s_last);
} else {
return flash_erase_32(info, s_first, s_last);
}
}
static int flash_erase_32(flash_info_t * info, int s_first, int s_last)
#else
int flash_erase(flash_info_t * info, int s_first, int s_last)
#endif
{
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
int flag, prot, sect, l_sect;
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!", prot);
printf("\n");
l_sect = -1;
/* 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 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00300030; /* sector erase */
l_sect = sect;
/*
* 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_32(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 = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
addr[0] = (CONFIG_SYS_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));
}
/*-----------------------------------------------------------------------
* Copy memory to flash, returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
static int write_word(flash_info_t * info, ulong dest, ulong data)
{
if ((info->flash_id & FLASH_TYPEMASK) == FLASH_AM320B) {
return write_word_16(info, dest, data);
} else {
return write_word_32(info, dest, data);
}
}
static int write_word_32(flash_info_t * info, ulong dest, ulong data)
#else
static int write_word(flash_info_t * info, ulong dest, ulong data)
#endif
{
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
ulong *datap = &data;
volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 =
(volatile CONFIG_SYS_FLASH_WORD_SIZE *)datap;
ulong start;
int i, flag;
/* Check if Flash is (sufficiently) erased */
if ((*((vu_long *)dest) & data) != data)
return (2);
for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00AA00AA;
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x00550055;
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_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] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080) !=
(data2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x00800080)) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT)
return (1);
}
}
return (0);
}
#ifdef CONFIG_SYS_FLASH_2ND_16BIT_DEV
#undef CONFIG_SYS_FLASH_WORD_SIZE
#define CONFIG_SYS_FLASH_WORD_SIZE unsigned short
/*
* The following code cannot be run from FLASH!
*/
static ulong flash_get_size_16(vu_long * addr, flash_info_t * info)
{
short i;
CONFIG_SYS_FLASH_WORD_SIZE value;
ulong base = (ulong) addr;
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) addr;
DEBUGF("get_size16: FLASH ADDR: %08x\n", (unsigned)addr);
/* issue bank reset to return to read mode */
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xF000F000;
/* Write auto select command: read Manufacturer ID */
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAA00AA00;
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55005500;
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x90009000;
udelay(1000);
value = swap16(addr2[0]);
DEBUGF("FLASH MANUFACT: %x\n", value);
switch (value) {
case (CONFIG_SYS_FLASH_WORD_SIZE) AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
case (CONFIG_SYS_FLASH_WORD_SIZE) FUJ_MANUFACT:
info->flash_id = FLASH_MAN_FUJ;
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* no or unknown flash */
}
value = swap16(addr2[1]); /* device ID */
DEBUGF("\nFLASH DEVICEID: %x\n", value);
switch (value) {
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320B:
info->flash_id += FLASH_AM320B;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
case (CONFIG_SYS_FLASH_WORD_SIZE)AMD_ID_LV320T:
info->flash_id += FLASH_AM320T;
info->sector_count = 71;
info->size = 0x00400000;
break; /* => 4 MB */
default:
info->flash_id = FLASH_UNKNOWN;
return (0); /* => no or unknown flash */
}
if (info->flash_id & FLASH_BTYPE) {
/* set sector offsets for bottom boot block type */
info->start[0] = base + 0x00000000;
info->start[1] = base + 0x00002000;
info->start[2] = base + 0x00004000;
info->start[3] = base + 0x00006000;
info->start[4] = base + 0x00008000;
info->start[5] = base + 0x0000a000;
info->start[6] = base + 0x0000c000;
info->start[7] = base + 0x0000e000;
for (i = 8; i < info->sector_count; i++)
info->start[i] = base + (i * 0x00010000) - 0x00070000;
} else {
/* set sector offsets for top boot block type */
i = info->sector_count - 1;
info->start[i--] = base + info->size - 0x00002000;
info->start[i--] = base + info->size - 0x00004000;
info->start[i--] = base + info->size - 0x00006000;
info->start[i--] = base + info->size - 0x00008000;
info->start[i--] = base + info->size - 0x0000a000;
info->start[i--] = base + info->size - 0x0000c000;
info->start[i--] = base + info->size - 0x0000e000;
for (; i >= 0; i--)
info->start[i] = base + i * 0x00010000;
}
/* 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 CONFIG_SYS_FLASH_WORD_SIZE *)(info->start[i]);
info->protect[i] = addr2[2] & 1;
}
/* issue bank reset to return to read mode */
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xF000F000;
return (info->size);
}
static int wait_for_DQ7_16(flash_info_t * info, int sect)
{
ulong start, now, last;
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr =
(CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
start = get_timer(0);
last = start;
while ((addr[0] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x80008000) !=
(CONFIG_SYS_FLASH_WORD_SIZE) 0x80008000) {
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;
}
static int flash_erase_16(flash_info_t * info, int s_first, int s_last)
{
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2;
int flag, prot, sect, l_sect;
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!", prot);
printf("\n");
l_sect = -1;
/* 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 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[sect]);
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAA00AA00;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55005500;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x80008000;
addr[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAA00AA00;
addr[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55005500;
addr2[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x30003000; /* sector erase */
l_sect = sect;
/*
* 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_16(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 = (CONFIG_SYS_FLASH_WORD_SIZE *) info->start[0];
addr[0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xF000F000; /* reset bank */
printf(" done\n");
return 0;
}
static int write_word_16(flash_info_t * info, ulong dest, ulong data)
{
volatile CONFIG_SYS_FLASH_WORD_SIZE *addr2 = (CONFIG_SYS_FLASH_WORD_SIZE *) (info->start[0]);
volatile CONFIG_SYS_FLASH_WORD_SIZE *dest2 = (CONFIG_SYS_FLASH_WORD_SIZE *) dest;
ulong *datap = &data;
volatile CONFIG_SYS_FLASH_WORD_SIZE *data2 =
(volatile CONFIG_SYS_FLASH_WORD_SIZE *)datap;
ulong start;
int i;
/* Check if Flash is (sufficiently) erased */
for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
if ((dest2[i] & swap16(data2[i])) != swap16(data2[i]))
return (2);
}
for (i = 0; i < 4 / sizeof(CONFIG_SYS_FLASH_WORD_SIZE); i++) {
int flag;
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xAA00AA00;
addr2[CONFIG_SYS_FLASH_ADDR1] = (CONFIG_SYS_FLASH_WORD_SIZE) 0x55005500;
addr2[CONFIG_SYS_FLASH_ADDR0] = (CONFIG_SYS_FLASH_WORD_SIZE) 0xA000A000;
dest2[i] = swap16(data2[i]);
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
/* data polling for D7 */
start = get_timer(0);
while ((dest2[i] & (CONFIG_SYS_FLASH_WORD_SIZE) 0x80008000) !=
(swap16(data2[i]) & (CONFIG_SYS_FLASH_WORD_SIZE) 0x80008000)) {
if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
return (1);
}
}
}
return (0);
}
#endif /* CONFIG_SYS_FLASH_2ND_16BIT_DEV */
/*-----------------------------------------------------------------------
* 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);
/*-----------------------------------------------------------------------
*/
unsigned long flash_init(void)
{
unsigned long total_b = 0;
unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
unsigned short index = 0;
int i;
DEBUGF("\n");
DEBUGF("FLASH: Index: %d\n", index);
/* Init: no FLASHes known */
for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
flash_info[i].flash_id = FLASH_UNKNOWN;
flash_info[i].sector_count = -1;
flash_info[i].size = 0;
/* check whether the address is 0 */
if (flash_addr_table[index][i] == 0)
continue;
/* call flash_get_size() to initialize sector address */
size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
&flash_info[i]);
flash_info[i].size = size_b[i];
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
i+1, size_b[i], size_b[i] << 20);
flash_info[i].sector_count = -1;
flash_info[i].size = 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[i]);
#if defined(CONFIG_ENV_IS_IN_FLASH)
(void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[i]);
#if defined(CONFIG_ENV_ADDR_REDUND)
(void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
&flash_info[i]);
#endif
#endif
total_b += flash_info[i].size;
}
return total_b;
}
#endif /* if defined(CONFIG_CAM5200) && defined(CONFIG_CAM5200_NIOSFLASH) */