+++ /dev/null
-/*
- * (C) Copyright 2002
- * Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * (C) Copyright 2002
- * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
- *
- * (C) Copyright 2002
- * Auerswald GmbH & Co KG, Germany
- * Kai-Uwe Bloem <kai-uwe.bloem@auerswald.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 <asm/arch/pxa-regs.h>
-
-/* Debugging macros ------------------------------------------------------ */
-
-#undef FLASH_DEBUG
-
-/* Some debug macros */
-#if (FLASH_DEBUG > 2 )
-#define PRINTK3(args...) printf(args)
-#else
-#define PRINTK3(args...)
-#endif
-
-#if FLASH_DEBUG > 1
-#define PRINTK2(args...) printf(args)
-#else
-#define PRINTK2(args...)
-#endif
-
-#ifdef FLASH_DEBUG
-#define PRINTK(args...) printf(args)
-#else
-#define PRINTK(args...)
-#endif
-
-/* ------------------------------------------------------------------------ */
-
-/* Development system: we have only 16 MB Flash */
-#ifdef CONFIG_MTD_INNOKOM_16MB
-#define FLASH_BANK_SIZE 0x01000000 /* 16 MB (during development) */
-#define MAIN_SECT_SIZE 0x00020000 /* 128k per sector */
-#endif
-
-/* Production system: we have 64 MB Flash */
-#ifdef CONFIG_MTD_INNOKOM_64MB
-#define FLASH_BANK_SIZE 0x04000000 /* 64 MB */
-#define MAIN_SECT_SIZE 0x00020000 /* 128k per sector */
-#endif
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-/**
- * flash_init: - initialize data structures for flash chips
- *
- * @return: size of the flash
- */
-
-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_28F128J3 & 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);
-
- switch (i) {
- case 0:
- flashbase = PHYS_FLASH_1;
- break;
- default:
- panic("configured too many flash banks!\n");
- break;
- }
- for (j = 0; j < flash_info[i].sector_count; j++) {
- flash_info[i].start[j] = flashbase + j*MAIN_SECT_SIZE;
- }
- size += flash_info[i].size;
- }
-
- /* Protect u-boot sectors */
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + (256*1024) - 1,
- &flash_info[0]);
-
-#ifdef CONFIG_ENV_IS_IN_FLASH
- flash_protect(FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1,
- &flash_info[0]);
-#endif
-
- return size;
-}
-
-
-/**
- * flash_print_info: - print information about the flash situation
- *
- * @param info:
- */
-
-void flash_print_info (flash_info_t *info)
-{
- int i, j;
-
- for (j=0; j<CONFIG_SYS_MAX_FLASH_BANKS; j++) {
-
- 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_28F128J3 & FLASH_TYPEMASK):
- printf("28F128J3 (128Mbit)\n");
- break;
- default:
- printf("Unknown Chip Type\n");
- return;
- }
-
- 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");
- info++;
- }
-}
-
-
-/**
- * flash_erase: - erase flash sectors
- *
- */
-
-int flash_erase(flash_info_t *info, int s_first, int s_last)
-{
- int flag, prot, sect;
- int rc = ERR_OK;
- ulong start;
-
- 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;
-
- prot = 0;
- for (sect=s_first; sect<=s_last; ++sect) {
- if (info->protect[sect]) prot++;
- }
-
- if (prot) return ERR_PROTECTED;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
-
- flag = disable_interrupts();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect<=s_last && !ctrlc(); sect++) {
-
- printf("Erasing sector %2d ... ", sect);
-
- PRINTK("\n");
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- if (info->protect[sect] == 0) { /* not protected */
- u16 * volatile addr = (u16 * volatile)(info->start[sect]);
-
- PRINTK("unlocking sector\n");
- *addr = 0x0060;
- *addr = 0x00d0;
- *addr = 0x00ff;
-
- PRINTK("erasing sector\n");
- *addr = 0x0020;
- PRINTK("confirming erase\n");
- *addr = 0x00D0;
-
- while ((*addr & 0x0080) != 0x0080) {
- PRINTK(".");
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- *addr = 0x00B0; /* suspend erase*/
- *addr = 0x00FF; /* read mode */
- rc = ERR_TIMOUT;
- goto outahere;
- }
- }
-
- PRINTK("clearing status register\n");
- *addr = 0x0050;
- PRINTK("resetting to read mode");
- *addr = 0x00FF;
- }
-
- printf("ok.\n");
- }
-
- if (ctrlc()) printf("User Interrupt!\n");
-
- outahere:
-
- /* allow flash to settle - wait 10 ms */
- udelay_masked(10000);
-
- if (flag) enable_interrupts();
-
- return rc;
-}
-
-
-/**
- * write_word: - copy memory to flash
- *
- * @param info:
- * @param dest:
- * @param data:
- * @return:
- */
-
-static int write_word (flash_info_t *info, ulong dest, ushort data)
-{
- volatile u16 *addr = (u16 *)dest, val;
- int rc = ERR_OK;
- int flag;
- ulong start;
-
- /* Check if Flash is (sufficiently) erased */
- if ((*addr & data) != data) return ERR_NOT_ERASED;
-
- /*
- * Disable interrupts which might cause a timeout
- * here. Remember that our exception vectors are
- * at address 0 in the flash, and we don't want a
- * (ticker) exception to happen while the flash
- * chip is in programming mode.
- */
- flag = disable_interrupts();
-
- /* clear status register command */
- *addr = 0x50;
-
- /* program set-up command */
- *addr = 0x40;
-
- /* latch address/data */
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- /* wait while polling the status register */
- while(((val = *addr) & 0x80) != 0x80) {
- if (get_timer(start) > CONFIG_SYS_FLASH_WRITE_TOUT) {
- rc = ERR_TIMOUT;
- *addr = 0xB0; /* suspend program command */
- goto outahere;
- }
- }
-
- if(val & 0x1A) { /* check for error */
- printf("\nFlash write error %02x at address %08lx\n",
- (int)val, (unsigned long)dest);
- if(val & (1<<3)) {
- printf("Voltage range error.\n");
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- if(val & (1<<1)) {
- printf("Device protect error.\n");
- rc = ERR_PROTECTED;
- goto outahere;
- }
- if(val & (1<<4)) {
- printf("Programming error.\n");
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
-
- outahere:
-
- *addr = 0xFF; /* read array command */
- if (flag) enable_interrupts();
-
- return rc;
-}
-
-
-/**
- * write_buf: - Copy memory to flash.
- *
- * @param info:
- * @param src: source of copy transaction
- * @param addr: where to copy to
- * @param cnt: number of bytes to copy
- *
- * @return error code
- */
-
-int write_buff (flash_info_t *info, uchar *src, ulong addr, ulong cnt)
-{
- ulong cp, wp;
- ushort data;
- int l;
- int i, rc;
-
- wp = (addr & ~1); /* 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 << 8);
- }
- for (; i<2 && cnt>0; ++i) {
- data = (data >> 8) | (*src++ << 8);
- --cnt;
- ++cp;
- }
- for (; cnt==0 && i<2; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 8);
- }
-
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- wp += 2;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 2) {
- /* data = *((vushort*)src); */
- data = *((ushort*)src);
- if ((rc = write_word(info, wp, data)) != 0) {
- return (rc);
- }
- src += 2;
- wp += 2;
- cnt -= 2;
- }
-
- if (cnt == 0) return ERR_OK;
-
- /*
- * handle unaligned tail bytes
- */
- data = 0;
- for (i=0, cp=wp; i<2 && cnt>0; ++i, ++cp) {
- data = (data >> 8) | (*src++ << 8);
- --cnt;
- }
- for (; i<2; ++i, ++cp) {
- data = (data >> 8) | (*(uchar *)cp << 8);
- }
-
- return write_word(info, wp, data);
-}
projects / karo-tx-uboot.git / blobdiff