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Diffstat (limited to 'board/atmel/at91rm9200dk/flash.c')
| -rw-r--r-- | board/atmel/at91rm9200dk/flash.c | 504 |
1 files changed, 0 insertions, 504 deletions
diff --git a/board/atmel/at91rm9200dk/flash.c b/board/atmel/at91rm9200dk/flash.c deleted file mode 100644 index be2274362c..0000000000 --- a/board/atmel/at91rm9200dk/flash.c +++ /dev/null @@ -1,504 +0,0 @@ -/* - * (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; -} |