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openwrt-xburst/package/uboot-ifxmips/files/board/ifx/danube/flash.c
thl 09b96811e8 [ifxmips] cleanup uboot package 
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13291 3c298f89-4303-0410-b956-a3cf2f4a3e73
2008-11-19 17:40:05 +00:00

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/*
* (C) Copyright 2003
* 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
*/
//joelin 10/07/2004 for MXIC MX29LV320ABTC-90
#include <common.h>
#include <asm/danube.h>
/*
#ifdef CONFIG_AMAZON
#define FLASH_DELAY {int i; \
for(i=0;i<800;i++) \
*((volatile u32 *)CFG_SDRAM_BASE_UNCACHE); \
}
#else
#define FLASH_DELAY
#endif
*/
flash_info_t flash_info[CFG_MAX_FLASH_BANKS]; /* info for FLASH chips */
/* NOTE - CONFIG_FLASH_16BIT means the CPU interface is 16-bit, it
* has nothing to do with the flash chip being 8-bit or 16-bit.
*/
#ifdef CONFIG_FLASH_16BIT
typedef unsigned short FLASH_PORT_WIDTH;
typedef volatile unsigned short FLASH_PORT_WIDTHV;
#define FLASH_ID_MASK 0xFFFF
#else
typedef unsigned long FLASH_PORT_WIDTH;
typedef volatile unsigned long FLASH_PORT_WIDTHV;
#define FLASH_ID_MASK 0xFFFFFFFF
#endif
#define FPW FLASH_PORT_WIDTH
#define FPWV FLASH_PORT_WIDTHV
#define ORMASK(size) ((-size) & OR_AM_MSK) // 0xffff8000
#if 0
#define FLASH_CYCLE1 0x0555
#define FLASH_CYCLE2 0x02aa
#else
#define FLASH_CYCLE1 0x0554 //joelin for MX29LV320AT/B 0x0555
#define FLASH_CYCLE2 0x02ab //joelin for MX29LV320AT/B 0x02aa
#endif
/*-----------------------------------------------------------------------
* Functions
*/
static ulong flash_get_size(FPWV *addr, flash_info_t *info);
static void flash_reset(flash_info_t *info);
static int write_word_intel(flash_info_t *info, FPWV *dest, FPW data);
static int write_word_amd(flash_info_t *info, FPWV *dest, FPW data);
static void flash_get_offsets(ulong base, flash_info_t *info);
static flash_info_t *flash_get_info(ulong base);
/*-----------------------------------------------------------------------
* flash_init()
*
* sets up flash_info and returns size of FLASH (bytes)
*/
unsigned long flash_init (void)
{
unsigned long size = 0;
int i;
/* Init: no FLASHes known */
for (i=0; i < CFG_MAX_FLASH_BANKS; ++i) { // 1 bank
ulong flashbase = (i == 0) ? PHYS_FLASH_1 : PHYS_FLASH_2; // 0xb0000000, 0xb4000000
volatile ulong * buscon = (ulong *)
((i == 0) ? DANUBE_EBU_BUSCON0 : DANUBE_EBU_BUSCON1);
/* Disable write protection */
// *buscon &= ~AMAZON_EBU_BUSCON0_WRDIS;
/* Enable write protection */
*buscon |= DANUBE_EBU_BUSCON0_WRDIS;
#if 1
memset(&flash_info[i], 0, sizeof(flash_info_t));
#endif
flash_info[i].size =
flash_get_size((FPW *)flashbase, &flash_info[i]);
if (flash_info[i].flash_id == FLASH_UNKNOWN) {
printf ("## Unknown FLASH on Bank %d - Size = 0x%08lx\n",
i, flash_info[i].size);
}
size += flash_info[i].size;
}
#if CFG_MONITOR_BASE >= CFG_FLASH_BASE // TEXT_BASE >= 0xB3000000
/* monitor protection ON by default */ /* only use software protection, info->protect[i]=0/1 */
/* flash_protect(FLAG_PROTECT_SET,
CFG_MONITOR_BASE,
CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
flash_get_info(CFG_MONITOR_BASE));
*/
flash_protect(FLAG_PROTECT_CLEAR, // clear protect
CFG_MONITOR_BASE,
CFG_MONITOR_BASE+CFG_MONITOR_LEN-1,
flash_get_info(CFG_MONITOR_BASE));
#endif
#ifdef CFG_ENV_IS_IN_FLASH /* 1 */
/* ENV protection ON by default */
/* flash_protect(FLAG_PROTECT_SET,
CFG_ENV_ADDR,
CFG_ENV_ADDR+CFG_ENV_SIZE-1,
flash_get_info(CFG_ENV_ADDR));
*/
flash_protect(FLAG_PROTECT_CLEAR,
CFG_ENV_ADDR,
CFG_ENV_ADDR+CFG_ENV_SIZE-1,
flash_get_info(CFG_ENV_ADDR));
#endif
return size;
}
/*-----------------------------------------------------------------------
*/
static void flash_reset(flash_info_t *info)
{
FPWV *base = (FPWV *)(info->start[0]);
(*DANUBE_EBU_BUSCON0)&=(~0x80000000); // enable writing
(*DANUBE_EBU_BUSCON1)&=(~0x80000000); // enable writing
(*EBU_NAND_CON)=0;
/* Put FLASH back in read mode */
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL){
*base = (FPW)0x00FF00FF; /* Intel Read Mode */
asm("SYNC");
}
else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD){
*base = (FPW)0x00F000F0; /* AMD Read Mode */
asm("SYNC"); //joelin
}
else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_MX){
*base = (FPW)0x00F000F0; /* MXIC Read Mode */
asm("SYNC"); //joelin
}
(*DANUBE_EBU_BUSCON0)|=0x80000000; // disable writing
(*DANUBE_EBU_BUSCON1)|=0x80000000; // disable writing
}
/*-----------------------------------------------------------------------
*/
static void flash_get_offsets (ulong base, flash_info_t *info)
{
int i;
/* set up sector start address table */
if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL
&& (info->flash_id & FLASH_BTYPE)) {
int bootsect_size; /* number of bytes/boot sector */
int sect_size; /* number of bytes/regular sector */
bootsect_size = 0x00002000 * (sizeof(FPW)/2);
sect_size = 0x00010000 * (sizeof(FPW)/2);
/* set sector offsets for bottom boot block type */
for (i = 0; i < 8; ++i) {
info->start[i] = base + (i * bootsect_size);
}
for (i = 8; i < info->sector_count; i++) {
info->start[i] = base + ((i - 7) * sect_size);
}
}
else if ((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_AMD
&& (info->flash_id & FLASH_TYPEMASK) == FLASH_AM640U) {
int sect_size; /* number of bytes/sector */
sect_size = 0x00010000 * (sizeof(FPW)/2);
/* set up sector start address table (uniform sector type) */
for( i = 0; i < info->sector_count; i++ )
info->start[i] = base + (i * sect_size);
}
else if(((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
&& ((info->flash_id & FLASH_TYPEMASK)==FLASH_28F128J3A)){
int sect_size;
sect_size = 0x20000;
for(i=0;i < info->sector_count; i++)
info->start[i]= base + (i*sect_size);
}
else if(((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL)
&& ((info->flash_id & FLASH_TYPEMASK)==FLASH_28F320J3A)){
int sect_size;
sect_size = 0x20000;
for(i=0;i < info->sector_count; i++)
info->start[i]= base + (i*sect_size);
}
//joelin add for MX29LV320AB-- SA0~SA7:sector size=8K bytes ,SA9~SA70 :sector size=64k bytes
else if(((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_MX)
&& ((info->flash_id & FLASH_TYPEMASK)==FLASH_29LV320AB)){
int bootsect_size; /* number of bytes/boot sector */
int sect_size; /* number of bytes/regular sector */
bootsect_size = 0x00002000 * (sizeof(FPW)/2);
sect_size = 0x00010000 * (sizeof(FPW)/2);
/* set sector offsets for bottom boot block type */
for (i = 0; i < 8; ++i) {
info->start[i] = base + (i * bootsect_size);
}
for (i = 8; i < info->sector_count; i++) {
info->start[i] = base + ((i - 7) * sect_size);
}
}
//joelin add for MX29LV160BB-- SA0=16K,SA1,SA2=8K,SA3=32K bytes ,SA4~SA34 :sector size=64k bytes
else if(((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_MX)
&& ((info->flash_id & FLASH_TYPEMASK)==FLASH_29LV160BB)){
int bootsect_size; /* number of bytes/boot sector */
int sect_size; /* number of bytes/regular sector */
bootsect_size = 0x00002000 * (sizeof(FPW)/2);
sect_size = 0x00010000 * (sizeof(FPW)/2);
/* set sector offsets for bottom boot block type */
//MX29LV160BB
info->start[0] = base ; //SA0=16K bytes
info->start[1] = info->start[0] + (1 * 0x00004000 * (sizeof(FPW)/2)); //SA1=8K bytes
info->start[2] = info->start[1] + (1 * 0x00002000 * (sizeof(FPW)/2)); //SA2=8K bytes
info->start[3] = info->start[2] + (1 * 0x00002000 * (sizeof(FPW)/2)); //SA3=32K bytes
for (i = 4; i < info->sector_count; i++) {
info->start[i] = base + ((i - 3) * sect_size);
}
}
//liupeng add for MX29LV640BB-- SA0~SA7:sector size=8k bytes ,SA8~SA134 :sector size=64k bytes
else if(((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_MX)
&& ((info->flash_id & FLASH_TYPEMASK)==FLASH_29LV640BB)){
int bootsect_size; /* number of bytes/boot sector */
int sect_size; /* number of bytes/regular sector */
bootsect_size = 0x00002000 * (sizeof(FPW)/2);
sect_size = 0x00010000 * (sizeof(FPW)/2);
/* set sector offsets for bottom boot block type */
for (i = 0; i < 8; ++i) {
info->start[i] = base + (i * bootsect_size);
}
for (i = 8; i < info->sector_count; i++) {
info->start[i] = base + ((i - 7) * sect_size);
}
}
else{
printf("flash get offsets fail\n");
}
}
/*-----------------------------------------------------------------------
*/
static flash_info_t *flash_get_info(ulong base)
{
int i;
flash_info_t * info;
for (i = 0; i < CFG_MAX_FLASH_BANKS; i ++) {
info = & flash_info[i];
if (info->start[0] <= base && base < info->start[0] + info->size)
break;
}
return i == CFG_MAX_FLASH_BANKS ? 0 : info;
}
/*-----------------------------------------------------------------------
*/
void flash_print_info (flash_info_t *info)
{
int i;
uchar *boottype;
uchar *bootletter;
uchar *fmt;
uchar botbootletter[] = "B";
uchar topbootletter[] = "T";
uchar botboottype[] = "bottom boot sector";
uchar topboottype[] = "top boot sector";
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_BM: printf ("BRIGHT MICRO "); 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_MX: printf ("MXIC "); break;
default: printf ("Unknown Vendor "); break;
}
/* check for top or bottom boot, if it applies */
if (info->flash_id & FLASH_BTYPE) {
boottype = botboottype;
bootletter = botbootletter;
}
else {
boottype = topboottype;
bootletter = topbootletter;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_AM640U:
fmt = "29LV641D (64 Mbit, uniform sectors)\n";
break;
case FLASH_28F800C3B:
case FLASH_28F800C3T:
fmt = "28F800C3%s (8 Mbit, %s)\n";
break;
case FLASH_INTEL800B:
case FLASH_INTEL800T:
fmt = "28F800B3%s (8 Mbit, %s)\n";
break;
case FLASH_28F160C3B:
case FLASH_28F160C3T:
fmt = "28F160C3%s (16 Mbit, %s)\n";
break;
case FLASH_INTEL160B:
case FLASH_INTEL160T:
fmt = "28F160B3%s (16 Mbit, %s)\n";
break;
case FLASH_28F320C3B:
case FLASH_28F320C3T:
fmt = "28F320C3%s (32 Mbit, %s)\n";
break;
case FLASH_INTEL320B:
case FLASH_INTEL320T:
fmt = "28F320B3%s (32 Mbit, %s)\n";
break;
case FLASH_28F640C3B:
case FLASH_28F640C3T:
fmt = "28F640C3%s (64 Mbit, %s)\n";
break;
case FLASH_INTEL640B:
case FLASH_INTEL640T:
fmt = "28F640B3%s (64 Mbit, %s)\n";
break;
case FLASH_28F128J3A:
fmt = "28F128J3A (128 Mbit, 128 uniform sectors)\n";
break;
case FLASH_28F320J3A:
fmt = "28F320J3A (32 Mbit, 32 uniform sectors)\n";
break;
case FLASH_29LV640BB: //liupeng for MXIC FLASH_29LV640BB
fmt = "29LV640BB (64 Mbit, boot sector SA0~SA126 size 64k bytes,other sectors SA127~SA135 size 8k bytes)\n";
break;
case FLASH_29LV320AB: //joelin for MXIC FLASH_29LV320AB
fmt = "29LV320AB (32 Mbit, boot sector SA0~SA7 size 8K bytes,other sectors SA8~SA70 size 64K bytes)\n";
break;
case FLASH_29LV160BB: //joelin for MXIC FLASH_29LV160BB
fmt = "29LV160BB (16 Mbit, boot sector SA0 size 16K bytes,SA1,SA2 size 8K bytes,SA3 size 32k bytes,other sectors SA4~SA34 size 64K bytes)\n";
break;
default:
fmt = "Unknown Chip Type\n";
break;
}
printf (fmt, bootletter, boottype);
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");
}
/*-----------------------------------------------------------------------
*/
/*
* The following code cannot be run from FLASH!
*/
ulong flash_get_size (FPWV *addr, flash_info_t *info)
{
(*DANUBE_EBU_BUSCON0)=0x1d7ff; //value from Aikann, should be used on the real chip
(*EBU_ADDR_SEL_0) = 0x10000031; //starting address from 0xb0000000
(*EBU_NAND_CON)=0;
(*DANUBE_EBU_BUSCON0)&=(~0x80000000); // enable writing
(*DANUBE_EBU_BUSCON1)&=(~0x80000000); // enable writing
/* Write auto select command: read Manufacturer ID */
/* Write auto select command sequence and test FLASH answer */
addr[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* for AMD, Intel ignores this */
asm("SYNC");
addr[FLASH_CYCLE2] = (FPW)0x00550055; /* for AMD, Intel ignores this */
asm("SYNC");
addr[FLASH_CYCLE1] = (FPW)0x00900090; /* selects Intel or AMD */
asm("SYNC");
/* The manufacturer codes are only 1 byte, so just use 1 byte.
* This works for any bus width and any FLASH device width.
*/
// printf("\n type is %08lx", addr[1] & 0xff); //joelin 10/06/2004 flash type
// printf("\n type is %08lx", addr[0] & 0xff); //joelin 10/06/2004 flash type
// asm("SYNC");
switch (addr[1] & 0xff) {
case (uchar)AMD_MANUFACT:
info->flash_id = FLASH_MAN_AMD;
break;
case (uchar)INTEL_MANUFACT: // 0x0089
info->flash_id = FLASH_MAN_INTEL; //0x00300000
break;
//joelin for MXIC
case (uchar)MX_MANUFACT: // 0x00c2
info->flash_id = FLASH_MAN_MX ;//0x00030000
break;
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
break;
/* default:
info->flash_id = FLASH_MAN_INTEL; //0x00300000
break;*/
}
/* Check 16 bits or 32 bits of ID so work on 32 or 16 bit bus. */
if (info->flash_id != FLASH_UNKNOWN) switch (addr[0]) {
case (FPW)AMD_ID_LV640U: /* 29LV640 and 29LV641 have same ID */
info->flash_id += FLASH_AM640U;
info->sector_count = 128;
info->size = 0x00800000 * (sizeof(FPW)/2);
break; /* => 8 or 16 MB */
case (FPW)INTEL_ID_28F800C3B:
info->flash_id += FLASH_28F800C3B;
info->sector_count = 23;
info->size = 0x00100000 * (sizeof(FPW)/2);
break; /* => 1 or 2 MB */
case (FPW)INTEL_ID_28F800B3B:
info->flash_id += FLASH_INTEL800B;
info->sector_count = 23;
info->size = 0x00100000 * (sizeof(FPW)/2);
break; /* => 1 or 2 MB */
case (FPW)INTEL_ID_28F160C3B:
info->flash_id += FLASH_28F160C3B;
info->sector_count = 39;
info->size = 0x00200000 * (sizeof(FPW)/2);
break; /* => 2 or 4 MB */
case (FPW)INTEL_ID_28F160B3B:
info->flash_id += FLASH_INTEL160B;
info->sector_count = 39;
info->size = 0x00200000 * (sizeof(FPW)/2);
break; /* => 2 or 4 MB */
case (FPW)INTEL_ID_28F320C3B:
info->flash_id += FLASH_28F320C3B;
info->sector_count = 71;
info->size = 0x00400000 * (sizeof(FPW)/2);
break; /* => 4 or 8 MB */
case (FPW)INTEL_ID_28F320B3B:
info->flash_id += FLASH_INTEL320B;
info->sector_count = 71;
info->size = 0x00400000 * (sizeof(FPW)/2);
break; /* => 4 or 8 MB */
case (FPW)INTEL_ID_28F640C3B:
info->flash_id += FLASH_28F640C3B;
info->sector_count = 135;
info->size = 0x00800000 * (sizeof(FPW)/2);
break; /* => 8 or 16 MB */
case (FPW)INTEL_ID_28F640B3B:
info->flash_id += FLASH_INTEL640B;
info->sector_count = 135;
info->size = 0x00800000 * (sizeof(FPW)/2);
break; /* => 8 or 16 MB */
case (FPW)INTEL_ID_28F128J3A:
info->flash_id +=FLASH_28F128J3A;
info->sector_count = 128;
info->size = 0x01000000 * (sizeof(FPW)/2);
break; /* => 16 MB */
case (FPW)INTEL_ID_28F320J3A:
info->flash_id += FLASH_28F320J3A;
info->sector_count = 32;
info->size = 0x00400000 * (sizeof(FPW)/2);
break;
//joelin for MXIC
case (FPW)MX_ID_29LV320AB:
info->flash_id += FLASH_29LV320AB;
info->sector_count = 71;
info->size = 0x00400000 * (sizeof(FPW)/2);
break; /* => 4 MB */
/* => 4 MB */
//joelin for MXIC
case (FPW)MX_ID_29LV160BB:
info->flash_id += FLASH_29LV160BB;
info->sector_count = 35;
info->size = 0x00200000 * (sizeof(FPW)/2);
break; /* => 2 MB */
/* => 2 MB */
/* liupeng*/
case (FPW)MX_ID_29LV640BB:
info->flash_id += FLASH_29LV640BB;
info->sector_count = 135;
info->size = 0x00800000 * (sizeof(FPW)/2);
break; /* => 2 MB */
default:
info->flash_id = FLASH_UNKNOWN;
info->sector_count = 0;
info->size = 0;
return (0); /* => no or unknown flash */
/* default:
info->flash_id += FLASH_28F320J3A;
info->sector_count = 32;
info->size = 0x00400000 * (sizeof(FPW)/2);
break;*/
}
(*DANUBE_EBU_BUSCON0)|=0x80000000; // disable writing
(*DANUBE_EBU_BUSCON1)|=0x80000000; // disable writing
flash_get_offsets((ulong)addr, info);
/* Put FLASH back in read mode */
flash_reset(info);
return (info->size);
}
/*-----------------------------------------------------------------------
*/
int flash_erase (flash_info_t *info, int s_first, int s_last)
{
FPWV *addr;
int flag, prot, sect;
int intel = (info->flash_id & FLASH_VENDMASK) == FLASH_MAN_INTEL;
ulong start, now, last;
int rcode = 0;
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;
}
switch (info->flash_id & FLASH_TYPEMASK) {
case FLASH_INTEL800B:
case FLASH_INTEL160B:
case FLASH_INTEL320B:
case FLASH_INTEL640B:
case FLASH_28F800C3B:
case FLASH_28F160C3B:
case FLASH_28F320C3B:
case FLASH_28F640C3B:
case FLASH_28F128J3A:
case FLASH_28F320J3A:
case FLASH_AM640U:
case FLASH_29LV640BB: //liupeng for MXIC MX29LV640BB
case FLASH_29LV320AB: //joelin for MXIC MX29LV320AB
case FLASH_29LV160BB: //joelin for MXIC MX29LV160BB
break;
case FLASH_UNKNOWN:
default:
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");
}
last = get_timer(0);
/* Start erase on unprotected sectors */
for (sect = s_first; sect<=s_last && rcode == 0; sect++) {
if (info->protect[sect] != 0) /* protected, skip it */
continue;
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
(*DANUBE_EBU_BUSCON0)&=(~0x80000000); // enable writing
(*DANUBE_EBU_BUSCON1)&=(~0x80000000); // enable writing
(*EBU_NAND_CON)=0;
addr = (FPWV *)(info->start[sect]);
if (intel) {
*addr = (FPW)0x00500050; /* clear status register */
*addr = (FPW)0x00200020; /* erase setup */
*addr = (FPW)0x00D000D0; /* erase confirm */
asm("SYNC");
}
else {
/* must be AMD style if not Intel */
FPWV *base; /* first address in bank */
base = (FPWV *)(info->start[0]);
base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
base[FLASH_CYCLE1] = (FPW)0x00800080; /* erase mode */
base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
*addr = (FPW)0x00300030; /* erase sector */
}
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
start = get_timer(0);
/* wait at least 50us for AMD, 80us for Intel.
* Let's wait 1 ms.
*/
udelay (1000);
while ((*addr & (FPW)0x00800080) != (FPW)0x00800080) {
if ((now = get_timer(start)) > CFG_FLASH_ERASE_TOUT) {
printf ("Erase Timeout\n");
if (intel) {
/* suspend erase */
*addr = (FPW)0x00B000B0;
}
flash_reset(info); /* reset to read mode */
rcode = 1; /* failed */
break;
}
/* show that we're waiting */
if ((get_timer(last)) > CFG_HZ) {/* every second */
putc ('.');
last = get_timer(0);
}
}
//joelin for MXIC
switch (info->flash_id & FLASH_VENDMASK) {
case FLASH_MAN_MX: //joelin for MXIC
break;
default:
if((*addr & (FPW)0x00200020) != (FPW)0x0)
printf("Erase Error\n");
break;
}
/* show that we're waiting */
if ((get_timer(last)) > CFG_HZ) { /* every second */
putc ('.');
last = get_timer(0);
}
//flash_reset(info); /* reset to read mode */
}
(*DANUBE_EBU_BUSCON0)|=0x80000000; // disable writing
(*DANUBE_EBU_BUSCON1)|=0x80000000; // disable writing
printf (" done\n");
return rcode;
}
/*-----------------------------------------------------------------------
* 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)
{
FPW data = 0; /* 16 or 32 bit word, matches flash bus width on MPC8XX */
int bytes; /* number of bytes to program in current word */
int left; /* number of bytes left to program */
int i, res;
for (left = cnt, res = 0;
left > 0 && res == 0;
addr += sizeof(data), left -= sizeof(data) - bytes) {
bytes = addr & (sizeof(data) - 1);
addr &= ~(sizeof(data) - 1);
/* combine source and destination data so can program
* an entire word of 16 or 32 bits
*/
for (i = 0; i < sizeof(data); i++) {
data <<= 8;
if (i < bytes || i - bytes >= left )
data += *((uchar *)addr + i);
else
data += *src++;
}
/* write one word to the flash */
switch (info->flash_id & FLASH_VENDMASK) {
case FLASH_MAN_AMD:
case FLASH_MAN_MX: //joelin for MXIC
res = write_word_amd(info, (FPWV *)addr, data);
break;
case FLASH_MAN_INTEL:
res = write_word_intel(info, (FPWV *)addr, data);
break;
default:
/* unknown flash type, error! */
printf ("missing or unknown FLASH type\n");
res = 1; /* not really a timeout, but gives error */
break;
}
}
return (res);
}
/*-----------------------------------------------------------------------
* Write a word to Flash for AMD FLASH
* A word is 16 or 32 bits, whichever the bus width of the flash bank
* (not an individual chip) is.
*
* returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
static int write_word_amd (flash_info_t *info, FPWV *dest, FPW data)
{
ulong start;
int flag;
int res = 0; /* result, assume success */
FPWV *base; /* first address in flash bank */
/* Check if Flash is (sufficiently) erased */
if ((*dest & data) != data) {
return (2);
}
base = (FPWV *)(info->start[0]);
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
(*DANUBE_EBU_BUSCON0)&=(~0x80000000); // enable writing
(*DANUBE_EBU_BUSCON1)&=(~0x80000000); // enable writing
(*EBU_NAND_CON)=0;
base[FLASH_CYCLE1] = (FPW)0x00AA00AA; /* unlock */
base[FLASH_CYCLE2] = (FPW)0x00550055; /* unlock */
base[FLASH_CYCLE1] = (FPW)0x00A000A0; /* selects program mode */
*dest = data; /* start programming the data */
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
start = get_timer (0);
/* data polling for D7 */
while (res == 0 && (*dest & (FPW)0x00800080) != (data & (FPW)0x00800080)) {
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
*dest = (FPW)0x00F000F0; /* reset bank */
res = 1;
}
}
(*DANUBE_EBU_BUSCON0)|=0x80000000; // disable writing
(*DANUBE_EBU_BUSCON1)|=0x80000000; // disable writing
return (res);
}
/*-----------------------------------------------------------------------
* Write a word to Flash for Intel FLASH
* A word is 16 or 32 bits, whichever the bus width of the flash bank
* (not an individual chip) is.
*
* returns:
* 0 - OK
* 1 - write timeout
* 2 - Flash not erased
*/
static int write_word_intel (flash_info_t *info, FPWV *dest, FPW data)
{
ulong start;
int flag;
int res = 0; /* result, assume success */
/* Check if Flash is (sufficiently) erased */
if ((*dest & data) != data) {
return (2);
}
/* Disable interrupts which might cause a timeout here */
flag = disable_interrupts();
(*DANUBE_EBU_BUSCON0)&=(~0x80000000); // enable writing
(*DANUBE_EBU_BUSCON1)&=(~0x80000000); // enable writing
(*EBU_NAND_CON)=0;
*dest = (FPW)0x00500050; /* clear status register */
*dest = (FPW)0x00FF00FF; /* make sure in read mode */
*dest = (FPW)0x00400040; /* program setup */
*dest = data; /* start programming the data */
asm("SYNC");
/* re-enable interrupts if necessary */
if (flag)
enable_interrupts();
start = get_timer (0);
while (res == 0 && (*dest & (FPW)0x00800080) != (FPW)0x00800080) {
if (get_timer(start) > CFG_FLASH_WRITE_TOUT) {
*dest = (FPW)0x00B000B0; /* Suspend program */
res = 1;
}
}
if (res == 0 && (*dest & (FPW)0x00100010))
res = 1; /* write failed, time out error is close enough */
*dest = (FPW)0x00500050; /* clear status register */
flash_reset(info);
(*DANUBE_EBU_BUSCON0)|=0x80000000; // disable writing
(*DANUBE_EBU_BUSCON1)|=0x80000000; // disable writing
return (res);
}
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