+++ /dev/null
-/*
- * 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);
-
-}
projects / karo-tx-uboot.git / blobdiff