-/*
- * (C) Copyright 2002
- * Lineo, Inc. <www.lineo.com>
- * Bernhard Kuhn <bkuhn@lineo.com>
- *
- * (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);
-
-
-/* Flash Organization Structure */
-typedef struct OrgDef
-{
- unsigned int sector_number;
- unsigned int sector_size;
-} OrgDef;
-
-
-/* Flash Organizations */
-OrgDef OrgAT49BV16x4[] =
-{
- { 8, 8*1024 }, /* 8 * 8 kBytes sectors */
- { 2, 32*1024 }, /* 2 * 32 kBytes sectors */
- { 30, 64*1024 }, /* 30 * 64 kBytes sectors */
-};
-
-OrgDef OrgAT49BV16x4A[] =
-{
- { 8, 8*1024 }, /* 8 * 8 kBytes sectors */
- { 31, 64*1024 }, /* 31 * 64 kBytes sectors */
-};
-
-OrgDef OrgAT49BV6416[] =
-{
- { 8, 8*1024 }, /* 8 * 8 kBytes sectors */
- { 127, 64*1024 }, /* 127 * 64 kBytes sectors */
-};
-
-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
-
-/* AT49BV1614A Codes */
-#define FLASH_CODE1 0xAA
-#define FLASH_CODE2 0x55
-#define ID_IN_CODE 0x90
-#define ID_OUT_CODE 0xF0
-
-
-#define CMD_READ_ARRAY 0x00F0
-#define CMD_UNLOCK1 0x00AA
-#define CMD_UNLOCK2 0x0055
-#define CMD_ERASE_SETUP 0x0080
-#define CMD_ERASE_CONFIRM 0x0030
-#define CMD_PROGRAM 0x00A0
-#define CMD_UNLOCK_BYPASS 0x0020
-#define CMD_SECTOR_UNLOCK 0x0070
-
-#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00005555<<1)))
-#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00002AAA<<1)))
-
-#define BIT_ERASE_DONE 0x0080
-#define BIT_RDY_MASK 0x0080
-#define BIT_PROGRAM_ERROR 0x0020
-#define BIT_TIMEOUT 0x80000000 /* our flag */
-
-#define READY 1
-#define ERR 2
-#define TMO 4
-
-/*-----------------------------------------------------------------------
- */
-void flash_identification (flash_info_t * info)
-{
- volatile u16 manuf_code, device_code, add_device_code;
-
- MEM_FLASH_ADDR1 = FLASH_CODE1;
- MEM_FLASH_ADDR2 = FLASH_CODE2;
- MEM_FLASH_ADDR1 = ID_IN_CODE;
-
- manuf_code = *(volatile u16 *) CONFIG_SYS_FLASH_BASE;
- device_code = *(volatile u16 *) (CONFIG_SYS_FLASH_BASE + 2);
- add_device_code = *(volatile u16 *) (CONFIG_SYS_FLASH_BASE + (3 << 1));
-
- MEM_FLASH_ADDR1 = FLASH_CODE1;
- MEM_FLASH_ADDR2 = FLASH_CODE2;
- MEM_FLASH_ADDR1 = ID_OUT_CODE;
-
- /* Vendor type */
- info->flash_id = ATM_MANUFACT & FLASH_VENDMASK;
- printf ("Atmel: ");
-
- if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
-
- if ((add_device_code & FLASH_TYPEMASK) ==
- (ATM_ID_BV1614A & FLASH_TYPEMASK)) {
- info->flash_id |= ATM_ID_BV1614A & FLASH_TYPEMASK;
- printf ("AT49BV1614A (16Mbit)\n");
- } else { /* AT49BV1614 Flash */
- info->flash_id |= ATM_ID_BV1614 & FLASH_TYPEMASK;
- printf ("AT49BV1614 (16Mbit)\n");
- }
-
- } else if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV6416 & FLASH_TYPEMASK)) {
- info->flash_id |= ATM_ID_BV6416 & FLASH_TYPEMASK;
- printf ("AT49BV6416 (64Mbit)\n");
- }
-}
-
-ushort flash_number_sector(OrgDef *pOrgDef, unsigned int nb_blocks)
-{
- int i, nb_sectors = 0;
-
- for (i=0; i<nb_blocks; i++){
- nb_sectors += pOrgDef[i].sector_number;
- }
-
- return nb_sectors;
-}
-
-void flash_unlock_sector(flash_info_t * info, unsigned int sector)
-{
- volatile u16 *addr = (volatile u16 *) (info->start[sector]);
-
- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
- *addr = CMD_SECTOR_UNLOCK;
-}
-
-
-ulong flash_init (void)
-{
- int i, j, k;
- unsigned int flash_nb_blocks, sector;
- unsigned int start_address;
- OrgDef *pOrgDef;
-
- ulong size = 0;
-
- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
- ulong flashbase = 0;
-
- flash_identification (&flash_info[i]);
-
- if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
- (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
-
- pOrgDef = OrgAT49BV16x4;
- flash_nb_blocks = sizeof (OrgAT49BV16x4) / sizeof (OrgDef);
- } else if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
- (ATM_ID_BV1614A & FLASH_TYPEMASK)){ /* AT49BV1614A Flash */
-
- pOrgDef = OrgAT49BV16x4A;
- flash_nb_blocks = sizeof (OrgAT49BV16x4A) / sizeof (OrgDef);
- } else if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
- (ATM_ID_BV6416 & FLASH_TYPEMASK)){ /* AT49BV6416 Flash */
-
- pOrgDef = OrgAT49BV6416;
- flash_nb_blocks = sizeof (OrgAT49BV6416) / sizeof (OrgDef);
- } else {
- flash_nb_blocks = 0;
- pOrgDef = OrgAT49BV16x4;
- }
-
- flash_info[i].sector_count = flash_number_sector(pOrgDef, flash_nb_blocks);
- memset (flash_info[i].protect, 0, flash_info[i].sector_count);
-
- if (i == 0)
- flashbase = PHYS_FLASH_1;
- else
- panic ("configured too many flash banks!\n");
-
- sector = 0;
- start_address = flashbase;
- flash_info[i].size = 0;
-
- for (j = 0; j < flash_nb_blocks; j++) {
- for (k = 0; k < pOrgDef[j].sector_number; k++) {
- flash_info[i].start[sector++] = start_address;
- start_address += pOrgDef[j].sector_size;
- flash_info[i].size += pOrgDef[j].sector_size;
- }
- }
-
- size += flash_info[i].size;
-
- if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
- (ATM_ID_BV6416 & FLASH_TYPEMASK)){ /* AT49BV6416 Flash */
-
- /* Unlock all sectors at reset */
- for (j=0; j<flash_info[i].sector_count; j++){
- flash_unlock_sector(&flash_info[i], j);
- }
- }
- }
-
- /* Protect binary boot image */
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_SYS_FLASH_BASE,
- CONFIG_SYS_FLASH_BASE + CONFIG_SYS_BOOT_SIZE - 1, &flash_info[0]);
-
- /* Protect environment variables */
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_ENV_ADDR,
- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
-
- /* Protect U-Boot gzipped image */
- flash_protect (FLAG_PROTECT_SET,
- CONFIG_SYS_U_BOOT_BASE,
- CONFIG_SYS_U_BOOT_BASE + CONFIG_SYS_U_BOOT_SIZE - 1, &flash_info[0]);
-
- return size;
-}
-
-/*-----------------------------------------------------------------------
- */
-void flash_print_info (flash_info_t * info)
-{
- int i;
-
- switch (info->flash_id & FLASH_VENDMASK) {
- case (ATM_MANUFACT & FLASH_VENDMASK):
- printf ("Atmel: ");
- break;
- default:
- printf ("Unknown Vendor ");
- break;
- }
-
- switch (info->flash_id & FLASH_TYPEMASK) {
- case (ATM_ID_BV1614 & FLASH_TYPEMASK):
- printf ("AT49BV1614 (16Mbit)\n");
- break;
- case (ATM_ID_BV1614A & FLASH_TYPEMASK):
- printf ("AT49BV1614A (16Mbit)\n");
- break;
- case (ATM_ID_BV6416 & FLASH_TYPEMASK):
- printf ("AT49BV6416 (64Mbit)\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");
-}
-
-/*-----------------------------------------------------------------------
- */
-
-int flash_erase (flash_info_t * info, int s_first, int s_last)
-{
- ulong result;
- int iflag, cflag, prot, sect;
- int rc = ERR_OK;
- int chip1;
- ulong start;
-
- /* 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) !=
- (ATM_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 */
- start = get_timer(0);
-
- if (info->protect[sect] == 0) { /* not protected */
- volatile u16 *addr = (volatile u16 *) (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 */
- chip1 = 0;
-
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
- chip1 = TMO;
- break;
- }
-
- if (!chip1 && (result & 0xFFFF) & BIT_ERASE_DONE)
- chip1 = READY;
-
- } while (!chip1);
-
- MEM_FLASH_ADDR1 = CMD_READ_ARRAY;
-
- if (chip1 == ERR) {
- rc = ERR_PROG_ERROR;
- goto outahere;
- }
- if (chip1 == 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_word (flash_info_t * info, ulong dest, ulong data)
-{
- volatile u16 *addr = (volatile u16 *) dest;
- ulong result;
- int rc = ERR_OK;
- int cflag, iflag;
- int chip1;
- ulong start;
-
- /*
- * 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_PROGRAM;
- *addr = data;
-
- /* arm simple, non interrupt dependent timer */
- start = get_timer(0);
-
- /* wait until flash is ready */
- chip1 = 0;
- do {
- result = *addr;
-
- /* check timeout */
- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
- chip1 = ERR | TMO;
- break;
- }
- if (!chip1 && ((result & 0x80) == (data & 0x80)))
- chip1 = READY;
-
- } while (!chip1);
-
- *addr = CMD_READ_ARRAY;
-
- if (chip1 == 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 wp, data;
- int rc;
-
- if (addr & 1) {
- printf ("unaligned destination not supported\n");
- return ERR_ALIGN;
- };
-
- if ((int) src & 1) {
- printf ("unaligned source not supported\n");
- return ERR_ALIGN;
- };
-
- wp = addr;
-
- while (cnt >= 2) {
- data = *((volatile u16 *) src);
- if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
- }
- src += 2;
- wp += 2;
- cnt -= 2;
- }
-
- if (cnt == 1) {
- data = (*((volatile u8 *) src)) | (*((volatile u8 *) (wp + 1)) <<
- 8);
- if ((rc = write_word (info, wp, data)) != 0) {
- return (rc);
- }
- src += 1;
- wp += 1;
- cnt -= 1;
- };
-
- return ERR_OK;
-}
projects / kernel / u-boot.git / commitdiff