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-/*
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- * (C) Copyright 2002
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- * Lineo, Inc. <www.lineo.com>
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- * Bernhard Kuhn <bkuhn@lineo.com>
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- *
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- * (C) Copyright 2002
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- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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- * Alex Zuepke <azu@sysgo.de>
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- *
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- * See file CREDITS for list of people who contributed to this
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- * project.
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License as
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- * published by the Free Software Foundation; either version 2 of
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- * the License, or (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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- * MA 02111-1307 USA
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- */
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-
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-#include <common.h>
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-
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-ulong myflush(void);
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-
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-
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-/* Flash Organization Structure */
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-typedef struct OrgDef
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-{
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- unsigned int sector_number;
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- unsigned int sector_size;
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-} OrgDef;
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-
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-
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-/* Flash Organizations */
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-OrgDef OrgAT49BV16x4[] =
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-{
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- { 8, 8*1024 }, /* 8 * 8 kBytes sectors */
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- { 2, 32*1024 }, /* 2 * 32 kBytes sectors */
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- { 30, 64*1024 }, /* 30 * 64 kBytes sectors */
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-};
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-
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-OrgDef OrgAT49BV16x4A[] =
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-{
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- { 8, 8*1024 }, /* 8 * 8 kBytes sectors */
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- { 31, 64*1024 }, /* 31 * 64 kBytes sectors */
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-};
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-
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-OrgDef OrgAT49BV6416[] =
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-{
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- { 8, 8*1024 }, /* 8 * 8 kBytes sectors */
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- { 127, 64*1024 }, /* 127 * 64 kBytes sectors */
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-};
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-
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-flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];
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-
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-/* AT49BV1614A Codes */
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-#define FLASH_CODE1 0xAA
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-#define FLASH_CODE2 0x55
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-#define ID_IN_CODE 0x90
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-#define ID_OUT_CODE 0xF0
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-
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-
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-#define CMD_READ_ARRAY 0x00F0
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-#define CMD_UNLOCK1 0x00AA
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-#define CMD_UNLOCK2 0x0055
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-#define CMD_ERASE_SETUP 0x0080
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-#define CMD_ERASE_CONFIRM 0x0030
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-#define CMD_PROGRAM 0x00A0
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-#define CMD_UNLOCK_BYPASS 0x0020
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-#define CMD_SECTOR_UNLOCK 0x0070
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-
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-#define MEM_FLASH_ADDR1 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00005555<<1)))
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-#define MEM_FLASH_ADDR2 (*(volatile u16 *)(CONFIG_SYS_FLASH_BASE + (0x00002AAA<<1)))
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-
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-#define BIT_ERASE_DONE 0x0080
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-#define BIT_RDY_MASK 0x0080
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-#define BIT_PROGRAM_ERROR 0x0020
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-#define BIT_TIMEOUT 0x80000000 /* our flag */
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-
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-#define READY 1
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-#define ERR 2
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-#define TMO 4
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-
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-/*-----------------------------------------------------------------------
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- */
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-void flash_identification (flash_info_t * info)
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-{
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- volatile u16 manuf_code, device_code, add_device_code;
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-
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- MEM_FLASH_ADDR1 = FLASH_CODE1;
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- MEM_FLASH_ADDR2 = FLASH_CODE2;
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- MEM_FLASH_ADDR1 = ID_IN_CODE;
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-
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- manuf_code = *(volatile u16 *) CONFIG_SYS_FLASH_BASE;
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- device_code = *(volatile u16 *) (CONFIG_SYS_FLASH_BASE + 2);
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- add_device_code = *(volatile u16 *) (CONFIG_SYS_FLASH_BASE + (3 << 1));
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-
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- MEM_FLASH_ADDR1 = FLASH_CODE1;
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- MEM_FLASH_ADDR2 = FLASH_CODE2;
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- MEM_FLASH_ADDR1 = ID_OUT_CODE;
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-
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- /* Vendor type */
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- info->flash_id = ATM_MANUFACT & FLASH_VENDMASK;
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- printf ("Atmel: ");
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-
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- if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
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-
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- if ((add_device_code & FLASH_TYPEMASK) ==
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- (ATM_ID_BV1614A & FLASH_TYPEMASK)) {
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- info->flash_id |= ATM_ID_BV1614A & FLASH_TYPEMASK;
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- printf ("AT49BV1614A (16Mbit)\n");
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- } else { /* AT49BV1614 Flash */
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- info->flash_id |= ATM_ID_BV1614 & FLASH_TYPEMASK;
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- printf ("AT49BV1614 (16Mbit)\n");
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- }
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-
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- } else if ((device_code & FLASH_TYPEMASK) == (ATM_ID_BV6416 & FLASH_TYPEMASK)) {
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- info->flash_id |= ATM_ID_BV6416 & FLASH_TYPEMASK;
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- printf ("AT49BV6416 (64Mbit)\n");
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- }
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-}
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-
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-ushort flash_number_sector(OrgDef *pOrgDef, unsigned int nb_blocks)
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-{
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- int i, nb_sectors = 0;
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-
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- for (i=0; i<nb_blocks; i++){
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- nb_sectors += pOrgDef[i].sector_number;
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- }
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-
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- return nb_sectors;
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-}
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-
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-void flash_unlock_sector(flash_info_t * info, unsigned int sector)
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-{
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- volatile u16 *addr = (volatile u16 *) (info->start[sector]);
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-
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- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
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- *addr = CMD_SECTOR_UNLOCK;
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-}
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-
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-
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-ulong flash_init (void)
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-{
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- int i, j, k;
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- unsigned int flash_nb_blocks, sector;
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- unsigned int start_address;
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- OrgDef *pOrgDef;
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-
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- ulong size = 0;
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-
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- for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
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- ulong flashbase = 0;
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-
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- flash_identification (&flash_info[i]);
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-
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- if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
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- (ATM_ID_BV1614 & FLASH_TYPEMASK)) {
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-
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- pOrgDef = OrgAT49BV16x4;
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- flash_nb_blocks = sizeof (OrgAT49BV16x4) / sizeof (OrgDef);
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- } else if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
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- (ATM_ID_BV1614A & FLASH_TYPEMASK)){ /* AT49BV1614A Flash */
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-
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- pOrgDef = OrgAT49BV16x4A;
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- flash_nb_blocks = sizeof (OrgAT49BV16x4A) / sizeof (OrgDef);
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- } else if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
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- (ATM_ID_BV6416 & FLASH_TYPEMASK)){ /* AT49BV6416 Flash */
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-
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- pOrgDef = OrgAT49BV6416;
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- flash_nb_blocks = sizeof (OrgAT49BV6416) / sizeof (OrgDef);
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- } else {
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- flash_nb_blocks = 0;
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- pOrgDef = OrgAT49BV16x4;
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- }
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-
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- flash_info[i].sector_count = flash_number_sector(pOrgDef, flash_nb_blocks);
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- memset (flash_info[i].protect, 0, flash_info[i].sector_count);
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-
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- if (i == 0)
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- flashbase = PHYS_FLASH_1;
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- else
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- panic ("configured too many flash banks!\n");
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-
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- sector = 0;
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- start_address = flashbase;
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- flash_info[i].size = 0;
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-
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- for (j = 0; j < flash_nb_blocks; j++) {
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- for (k = 0; k < pOrgDef[j].sector_number; k++) {
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- flash_info[i].start[sector++] = start_address;
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- start_address += pOrgDef[j].sector_size;
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- flash_info[i].size += pOrgDef[j].sector_size;
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- }
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- }
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-
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- size += flash_info[i].size;
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-
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- if ((flash_info[i].flash_id & FLASH_TYPEMASK) ==
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- (ATM_ID_BV6416 & FLASH_TYPEMASK)){ /* AT49BV6416 Flash */
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-
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- /* Unlock all sectors at reset */
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- for (j=0; j<flash_info[i].sector_count; j++){
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- flash_unlock_sector(&flash_info[i], j);
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- }
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- }
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- }
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-
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- /* Protect binary boot image */
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- flash_protect (FLAG_PROTECT_SET,
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- CONFIG_SYS_FLASH_BASE,
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- CONFIG_SYS_FLASH_BASE + CONFIG_SYS_BOOT_SIZE - 1, &flash_info[0]);
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-
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- /* Protect environment variables */
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- flash_protect (FLAG_PROTECT_SET,
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- CONFIG_ENV_ADDR,
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- CONFIG_ENV_ADDR + CONFIG_ENV_SIZE - 1, &flash_info[0]);
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-
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- /* Protect U-Boot gzipped image */
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- flash_protect (FLAG_PROTECT_SET,
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- CONFIG_SYS_U_BOOT_BASE,
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- CONFIG_SYS_U_BOOT_BASE + CONFIG_SYS_U_BOOT_SIZE - 1, &flash_info[0]);
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-
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- return size;
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-void flash_print_info (flash_info_t * info)
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-{
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- int i;
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-
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- switch (info->flash_id & FLASH_VENDMASK) {
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- case (ATM_MANUFACT & FLASH_VENDMASK):
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- printf ("Atmel: ");
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- break;
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- default:
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- printf ("Unknown Vendor ");
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- break;
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- }
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-
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- switch (info->flash_id & FLASH_TYPEMASK) {
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- case (ATM_ID_BV1614 & FLASH_TYPEMASK):
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- printf ("AT49BV1614 (16Mbit)\n");
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- break;
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- case (ATM_ID_BV1614A & FLASH_TYPEMASK):
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- printf ("AT49BV1614A (16Mbit)\n");
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- break;
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- case (ATM_ID_BV6416 & FLASH_TYPEMASK):
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- printf ("AT49BV6416 (64Mbit)\n");
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- break;
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- default:
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- printf ("Unknown Chip Type\n");
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- return;
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- }
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-
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- printf (" Size: %ld MB in %d Sectors\n",
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- info->size >> 20, info->sector_count);
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-
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- printf (" Sector Start Addresses:");
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- for (i = 0; i < info->sector_count; i++) {
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- if ((i % 5) == 0) {
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- printf ("\n ");
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- }
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- printf (" %08lX%s", info->start[i],
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- info->protect[i] ? " (RO)" : " ");
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- }
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- printf ("\n");
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-}
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-
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-/*-----------------------------------------------------------------------
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- */
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-
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-int flash_erase (flash_info_t * info, int s_first, int s_last)
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-{
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- ulong result;
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- int iflag, cflag, prot, sect;
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- int rc = ERR_OK;
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- int chip1;
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- ulong start;
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-
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- /* first look for protection bits */
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-
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- if (info->flash_id == FLASH_UNKNOWN)
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- return ERR_UNKNOWN_FLASH_TYPE;
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-
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- if ((s_first < 0) || (s_first > s_last)) {
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- return ERR_INVAL;
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- }
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-
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- if ((info->flash_id & FLASH_VENDMASK) !=
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- (ATM_MANUFACT & FLASH_VENDMASK)) {
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- return ERR_UNKNOWN_FLASH_VENDOR;
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- }
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-
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- prot = 0;
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- for (sect = s_first; sect <= s_last; ++sect) {
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- if (info->protect[sect]) {
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- prot++;
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- }
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- }
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- if (prot)
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- return ERR_PROTECTED;
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-
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- /*
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- * Disable interrupts which might cause a timeout
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- * here. Remember that our exception vectors are
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- * at address 0 in the flash, and we don't want a
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- * (ticker) exception to happen while the flash
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- * chip is in programming mode.
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- */
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- cflag = icache_status ();
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- icache_disable ();
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- iflag = disable_interrupts ();
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-
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- /* Start erase on unprotected sectors */
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- for (sect = s_first; sect <= s_last && !ctrlc (); sect++) {
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- printf ("Erasing sector %2d ... ", sect);
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-
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- /* arm simple, non interrupt dependent timer */
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- start = get_timer(0);
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-
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- if (info->protect[sect] == 0) { /* not protected */
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- volatile u16 *addr = (volatile u16 *) (info->start[sect]);
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-
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- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
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- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
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- MEM_FLASH_ADDR1 = CMD_ERASE_SETUP;
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-
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- MEM_FLASH_ADDR1 = CMD_UNLOCK1;
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- MEM_FLASH_ADDR2 = CMD_UNLOCK2;
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- *addr = CMD_ERASE_CONFIRM;
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-
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- /* wait until flash is ready */
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- chip1 = 0;
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-
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- do {
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- result = *addr;
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-
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- /* check timeout */
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- if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) {
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|
|
- 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;
|
|
|
|
-}
|
|
|