mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-18 18:59:44 +00:00
300 lines
6.3 KiB
C
300 lines
6.3 KiB
C
/*
|
|
* flash.c: Support code for the flash chips on the Xilinx ML2 board
|
|
*
|
|
* Copyright 2002 Mind NV
|
|
*
|
|
* http://www.mind.be/
|
|
*
|
|
* Author : Peter De Schrijver (p2@mind.be)
|
|
*
|
|
* This software may be used and distributed according to the terms of
|
|
* the GNU General Public License (GPL) version 2, incorporated herein by
|
|
* reference. Drivers based on or derived from this code fall under the GPL
|
|
* and must retain the authorship, copyright and this license notice. This
|
|
* file is not a complete program and may only be used when the entire program
|
|
* is licensed under the GPL.
|
|
*
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <asm/u-boot.h>
|
|
#include <configs/ML2.h>
|
|
|
|
#define FLASH_BANK_SIZE (64*1024*1024)
|
|
|
|
flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
|
|
|
|
#define SECT_SIZE (512*1024)
|
|
|
|
#define CMD_READ_ARRAY 0x00FF00FF00FF00FULL
|
|
#define CMD_IDENTIFY 0x0090009000900090ULL
|
|
#define CMD_ERASE_SETUP 0x0020002000200020ULL
|
|
#define CMD_ERASE_CONFIRM 0x00D000D000D000D0ULL
|
|
#define CMD_PROGRAM 0x0040004000400040ULL
|
|
#define CMD_RESUME 0x00D000D000D000D0ULL
|
|
#define CMD_SUSPEND 0x00B000B000B000B0ULL
|
|
#define CMD_STATUS_READ 0x0070007000700070ULL
|
|
#define CMD_STATUS_RESET 0x0050005000500050ULL
|
|
|
|
#define BIT_BUSY 0x0080008000800080ULL
|
|
#define BIT_ERASE_SUSPEND 0x004000400400040ULL
|
|
#define BIT_ERASE_ERROR 0x0020002000200020ULL
|
|
#define BIT_PROGRAM_ERROR 0x0010001000100010ULL
|
|
#define BIT_VPP_RANGE_ERROR 0x0008000800080008ULL
|
|
#define BIT_PROGRAM_SUSPEND 0x0004000400040004ULL
|
|
#define BIT_PROTECT_ERROR 0x0002000200020002ULL
|
|
#define BIT_UNDEFINED 0x0001000100010001ULL
|
|
|
|
#define BIT_SEQUENCE_ERROR 0x0030003000300030ULL
|
|
|
|
#define BIT_TIMEOUT 0x80000000
|
|
|
|
|
|
inline void eieio(void) {
|
|
|
|
__asm__ __volatile__ ("eieio" : : : "memory");
|
|
|
|
}
|
|
|
|
ulong flash_init(void) {
|
|
|
|
int i, j;
|
|
ulong size = 0;
|
|
|
|
for(i=0;i<CONFIG_SYS_MAX_FLASH_BANKS;i++) {
|
|
ulong flashbase = 0;
|
|
|
|
flash_info[i].flash_id = (INTEL_MANUFACT & FLASH_VENDMASK) |
|
|
(INTEL_ID_28F128J3A & FLASH_TYPEMASK);
|
|
flash_info[i].size = FLASH_BANK_SIZE;
|
|
flash_info[i].sector_count = CONFIG_SYS_MAX_FLASH_SECT;
|
|
memset(flash_info[i].protect, 0, CONFIG_SYS_MAX_FLASH_SECT);
|
|
if (i==0)
|
|
flashbase = CONFIG_SYS_FLASH_BASE;
|
|
else
|
|
panic("configured too many flash banks!\n");
|
|
for (j = 0; j < flash_info[i].sector_count; j++)
|
|
flash_info[i].start[j]=flashbase + j * SECT_SIZE;
|
|
|
|
size += flash_info[i].size;
|
|
}
|
|
|
|
return size;
|
|
}
|
|
|
|
void flash_print_info (flash_info_t *info) {
|
|
|
|
int i;
|
|
|
|
switch (info->flash_id & FLASH_VENDMASK) {
|
|
case (INTEL_MANUFACT & FLASH_VENDMASK):
|
|
printf("Intel: ");
|
|
break;
|
|
default:
|
|
printf("Unknown Vendor ");
|
|
break;
|
|
}
|
|
|
|
switch (info->flash_id & FLASH_TYPEMASK) {
|
|
case (INTEL_ID_28F128J3A & FLASH_TYPEMASK):
|
|
printf("4x 28F128J3A (128Mbit)\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");
|
|
}
|
|
|
|
int flash_error (unsigned long long code) {
|
|
|
|
if (code & BIT_TIMEOUT) {
|
|
printf ("Timeout\n");
|
|
return ERR_TIMOUT;
|
|
}
|
|
|
|
if (~code & BIT_BUSY) {
|
|
printf ("Busy\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_VPP_RANGE_ERROR) {
|
|
printf ("Vpp range error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_PROTECT_ERROR) {
|
|
printf ("Device protect error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_SEQUENCE_ERROR) {
|
|
printf ("Command seqence error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_ERASE_ERROR) {
|
|
printf ("Block erase error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_PROGRAM_ERROR) {
|
|
printf ("Program error\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_ERASE_SUSPEND) {
|
|
printf ("Block erase suspended\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
if (code & BIT_PROGRAM_SUSPEND) {
|
|
printf ("Program suspended\n");
|
|
return ERR_PROG_ERROR;
|
|
}
|
|
|
|
return ERR_OK;
|
|
|
|
}
|
|
|
|
int flash_erase (flash_info_t *info, int s_first, int s_last) {
|
|
|
|
int rc = ERR_OK;
|
|
int sect;
|
|
unsigned long long result;
|
|
|
|
if (info->flash_id == FLASH_UNKNOWN)
|
|
return ERR_UNKNOWN_FLASH_TYPE;
|
|
|
|
if ((s_first < 0) || (s_first > s_last))
|
|
return ERR_INVAL;
|
|
|
|
if ((info->flash_id & FLASH_VENDMASK) != (INTEL_MANUFACT & FLASH_VENDMASK))
|
|
return ERR_UNKNOWN_FLASH_VENDOR;
|
|
|
|
for (sect=s_first; sect<=s_last; ++sect)
|
|
if (info->protect[sect])
|
|
return ERR_PROTECTED;
|
|
|
|
for (sect = s_first; sect<=s_last && !ctrlc(); sect++) {
|
|
volatile unsigned long long *addr=
|
|
(unsigned long long *)(info->start[sect]);
|
|
|
|
printf("Erasing sector %2d ... ", sect);
|
|
|
|
*addr=CMD_STATUS_RESET;
|
|
eieio();
|
|
*addr=CMD_ERASE_SETUP;
|
|
eieio();
|
|
*addr=CMD_ERASE_CONFIRM;
|
|
eieio();
|
|
|
|
do {
|
|
result = *addr;
|
|
} while(~result & BIT_BUSY);
|
|
|
|
*addr=CMD_READ_ARRAY;
|
|
|
|
if ((rc = flash_error(result)) == ERR_OK)
|
|
printf("ok.\n");
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (ctrlc())
|
|
printf("User Interrupt!\n");
|
|
|
|
return rc;
|
|
}
|
|
|
|
static int write_word (flash_info_t *info, ulong dest, unsigned long long data) {
|
|
|
|
volatile unsigned long long *addr=(unsigned long long *)dest;
|
|
unsigned long long result;
|
|
int rc = ERR_OK;
|
|
|
|
result = *addr;
|
|
if ((result & data) != data)
|
|
return ERR_NOT_ERASED;
|
|
|
|
*addr=CMD_STATUS_RESET;
|
|
eieio();
|
|
*addr=CMD_PROGRAM;
|
|
eieio();
|
|
*addr=data;
|
|
eieio();
|
|
|
|
do {
|
|
result = *addr;
|
|
} while(~result & BIT_BUSY);
|
|
|
|
*addr=CMD_READ_ARRAY;
|
|
|
|
rc = flash_error(result);
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt) {
|
|
|
|
ulong cp, wp;
|
|
unsigned long long data;
|
|
int l;
|
|
int i,rc;
|
|
|
|
wp=(addr & ~7);
|
|
|
|
if((l=addr-wp) != 0) {
|
|
data=0;
|
|
for(i=0,cp=wp;i<l;++i,++cp)
|
|
data = (data >> 8) | (*(uchar *)cp << 24);
|
|
|
|
for (; i<8 && cnt>0; ++i) {
|
|
data = (data >> 8) | (*src++ << 24);
|
|
--cnt;
|
|
++cp;
|
|
}
|
|
|
|
for (; i<8; ++i, ++cp)
|
|
data = (data >> 8) | (*(uchar *)cp << 24);
|
|
|
|
if ((rc = write_word(info, wp, data)) != 0)
|
|
return rc;
|
|
|
|
wp+=8;
|
|
}
|
|
|
|
while(cnt>=8) {
|
|
data = *((unsigned long long *)src);
|
|
if ((rc = write_word(info, wp, data)) != 0)
|
|
return rc;
|
|
src+=8;
|
|
wp+=8;
|
|
cnt-=8;
|
|
}
|
|
|
|
if(cnt == 0)
|
|
return ERR_OK;
|
|
|
|
data = 0;
|
|
for (i=0, cp=wp; i<8 && cnt>0; ++i, ++cp) {
|
|
data = (data >> 8) | (*src++ << 24);
|
|
--cnt;
|
|
}
|
|
for (; i<8; ++i, ++cp) {
|
|
data = (data >> 8) | (*(uchar *)cp << 24);
|
|
}
|
|
|
|
return write_word(info, wp, data);
|
|
|
|
}
|