+++ /dev/null
-/*
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Alex Zuepke <azu@sysgo.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>
-
-ulong myflush (void);
-
-
-#define FLASH_BANK_SIZE PHYS_FLASH_SIZE
-#define MAIN_SECT_SIZE 0x10000 /* 64 KB */
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-
-#define CMD_READ_ARRAY 0x000000F0
-#define CMD_UNLOCK1 0x000000AA
-#define CMD_UNLOCK2 0x00000055
-#define CMD_ERASE_SETUP 0x00000080
-#define CMD_ERASE_CONFIRM 0x00000030
-#define CMD_PROGRAM 0x000000A0
-#define CMD_UNLOCK_BYPASS 0x00000020
-
-#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00000555 << 1)))
-#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x000002AA << 1)))
-
-#define BIT_ERASE_DONE 0x00000080
-#define BIT_RDY_MASK 0x00000080
-#define BIT_PROGRAM_ERROR 0x00000020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
-
-#define READY 1
-#define ERR 2
-#define TMO 4
-
-/*-----------------------------------------------------------------------
- */
-
-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 =
-#if defined(CONFIG_AMD_LV400)
- (AMD_MANUFACT & FLASH_VENDMASK) |
- (AMD_ID_LV400B & FLASH_TYPEMASK);
-#elif defined(CONFIG_AMD_LV800)
- (AMD_MANUFACT & FLASH_VENDMASK) |
- (AMD_ID_LV800B & FLASH_TYPEMASK);
-#else
-#error "Unknown flash configured"
-#endif
- 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 = PHYS_FLASH_1;
- else
- panic ("configured too many flash banks!\n");
- for (j = 0; j < flash_info[i].sector_count; j++) {
- if (j <= 3) {
- /* 1st one is 16 KB */
- if (j == 0) {
- flash_info[i].start[j] =
- flashbase + 0;
- }
-
- /* 2nd and 3rd are both 8 KB */
- if ((j == 1) || (j == 2)) {
- flash_info[i].start[j] =
- flashbase + 0x4000 + (j -
- 1) *
- 0x2000;
- }
-
- /* 4th 32 KB */
- if (j == 3) {
- flash_info[i].start[j] =
- flashbase + 0x8000;
- }
- } else {
- flash_info[i].start[j] =
- flashbase + (j - 3) * MAIN_SECT_SIZE;
- }
- }
- size += flash_info[i].size;
- }
-
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + monitor_flash_len - 1,
- &flash_info[0]);
-
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
-
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t * info)
-{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case (AMD_MANUFACT & FLASH_VENDMASK):
- printf ("AMD: ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (AMD_ID_LV400B & FLASH_TYPEMASK):
- printf ("1x Amd29LV400BB (4Mbit)\n");
- break;
- case (AMD_ID_LV800B & FLASH_TYPEMASK):
- printf ("1x Amd29LV800BB (8Mbit)\n");
- break;
- default:
- printf ("Unknown Chip Type\n");
- goto Done;
- 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");
-
- Done:;
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- ushort result;
- int iflag, cflag, prot, sect;
- int rc = ERR_OK;
- int chip;
-
- /* first look for protection bits */
-
- 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) !=
- (AMD_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.
- */
- cflag = icache_status ();
- icache_disable ();
- iflag = disable_interrupts ();
-
- /* Start erase on unprotected sectors */
- for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
- printf ("Erasing sector %2d ... ", sect);
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- if (info->protect[sect] == 0) { /* not protected */
- vu_short *addr = (vu_short *) (info->start[sect]);
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- *addr = CMD_ERASE_CONFIRM;
-
- /* wait until flash is ready */
- chip = 0;
-
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer_masked () >
- CONFIG_SYS_FLASH_ERASE_TOUT) {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip = TMO;
- break;
- }
-
- if (!chip
- && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip = READY;
-
- if (!chip
- && (result & 0xFFFF) & BIT_PROGRAM_ERROR)
- chip = ERR;
-
- } while (!chip);
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (chip == ERR) {
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- if (chip == TMO) {
- rc = ERR_TIMOUT;
- goto outahere;
- }
-
- printf ("ok.\n");
- } else { /* it was protected */
-
- printf ("protected!\n");
- }
- }
-
- if (ctrlc ())
- printf ("User Interrupt!\n");
-
- outahere:
- /* allow flash to settle - wait 10 ms */
- udelay_masked (10000);
-
- if (iflag)
- enable_interrupts ();
-
- if (cflag)
- icache_enable ();
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash
- */
-
-static int write_hword (flash_info_t * info, ulong dest, ushort data)
-{
- vu_short *addr = (vu_short *) dest;
- ushort result;
- int rc = ERR_OK;
- int cflag, iflag;
- int chip;
-
- /*
- * Check if Flash is (sufficiently) erased
- */
- result = *addr;
- if ((result & 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.
- */
- cflag = icache_status ();
- icache_disable ();
- iflag = disable_interrupts ();
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
- MEM_FLASH_ADDR1 = CMD_UNLOCK_BYPASS;
- *addr = CMD_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- reset_timer_masked ();
-
- /* wait until flash is ready */
- chip = 0;
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer_masked () > CONFIG_SYS_FLASH_ERASE_TOUT) {
- chip = ERR | TMO;
- break;
- }
- if (!chip && ((result & 0x80) == (data & 0x80)))
- chip = READY;
-
- if (!chip && ((result & 0xFFFF) & BIT_PROGRAM_ERROR)) {
- result = *addr;
-
- if ((result & 0x80) == (data & 0x80))
- chip = READY;
- else
- chip = ERR;
- }
-
- } while (!chip);
-
- *addr = CMD_READ_ARRAY;
-
- if (chip == ERR || *addr != data)
- rc = ERR_PROG_ERROR;
-
- if (iflag)
- enable_interrupts ();
-
- if (cflag)
- icache_enable ();
-
- return rc;
-}
-
-/*-----------------------------------------------------------------------
- * Copy memory to flash.
- */
-
-int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt)
-{
- ulong cp, wp;
- int l;
- int i, rc;
- ushort data;
-
- 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_hword (info, wp, data)) != 0) {
- return (rc);
- }
- wp += 2;
- }
-
- /*
- * handle word aligned part
- */
- while (cnt >= 2) {
- data = *((vu_short *) src);
- if ((rc = write_hword (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_hword (info, wp, data);
-}
projects / people / ms / u-boot.git / commitdiff
