diff options
Diffstat (limited to 'board/BuS/eb_cpu5282/flash.c')
-rw-r--r-- | board/BuS/eb_cpu5282/flash.c | 415 |
1 files changed, 0 insertions, 415 deletions
diff --git a/board/BuS/eb_cpu5282/flash.c b/board/BuS/eb_cpu5282/flash.c deleted file mode 100644 index 8b7f9578fc8..00000000000 --- a/board/BuS/eb_cpu5282/flash.c +++ /dev/null @@ -1,415 +0,0 @@ -/* - * (C) Copyright 2005 - * BuS Elektronik GmbH & Co.KG <esw@bus-elektonik.de> - * - * Based On - * Wolfgang Denk, DENX Software Engineering, wd@denx.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 "cfm_flash.h" - -#define PHYS_FLASH_1 CONFIG_SYS_FLASH_BASE -#define FLASH_BANK_SIZE 0x200000 - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -void flash_print_info (flash_info_t * info) -{ - int i; - - switch (info->flash_id & FLASH_VENDMASK) { - case (AMD_MANUFACT & FLASH_VENDMASK): - printf ("AMD: "); - switch (info->flash_id & FLASH_TYPEMASK) { - case (AMD_ID_LV160B & FLASH_TYPEMASK): - printf ("AM29LV160B (16Bit)\n"); - break; - default: - printf ("Unknown Chip Type\n"); - break; - } - break; - case FREESCALE_MANUFACT & FLASH_VENDMASK: - cfm_flash_print_info (info); - break; - default: - printf ("Unknown Vendor "); - break; - } - - puts (" Size: "); - if ((info->size >> 20) > 0) - { - printf ("%ld MiB",info->size >> 20); - } - else - { - printf ("%ld KiB",info->size >> 10); - } - printf (" in %d Sectors\n", info->sector_count); - - printf (" Sector Start Addresses:"); - for (i = 0; i < info->sector_count; i++) { - if ((i % 4) == 0) { - printf ("\n "); - } - printf ("%02d: %08lX%s ", i,info->start[i], - info->protect[i] ? " P" : " "); - } - printf ("\n\n"); -} - -unsigned long flash_init (void) -{ - int i, j; - ulong size = 0; - - for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) { - ulong flashbase = 0; - - switch (i) - { - case 1: - flash_info[i].flash_id = - (AMD_MANUFACT & FLASH_VENDMASK) | - (AMD_ID_LV160B & 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); - flashbase = PHYS_FLASH_1; - for (j = 0; j < flash_info[i].sector_count; j++) { - if (j == 0) { - /* 1st is 16 KiB */ - flash_info[i].start[j] = flashbase; - } - if ((j >= 1) && (j <= 2)) { - /* 2nd and 3rd are 8 KiB */ - flash_info[i].start[j] = - flashbase + 0x4000 + 0x2000 * (j - 1); - } - if (j == 3) { - /* 4th is 32 KiB */ - flash_info[i].start[j] = flashbase + 0x8000; - } - if ((j >= 4) && (j <= 34)) { - /* rest is 256 KiB */ - flash_info[i].start[j] = - flashbase + 0x10000 + 0x10000 * (j - 4); - } - } - break; - case 0: - cfm_flash_init (&flash_info[i]); - break; - default: - panic ("configured to many flash banks!\n"); - } - - size += flash_info[i].size; - } - - flash_protect (FLAG_PROTECT_SET, - CONFIG_SYS_FLASH_BASE, - CONFIG_SYS_FLASH_BASE + 0xffff, &flash_info[0]); - - return size; -} - -#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 MEM_FLASH_ADDR1 (*(volatile u16 *)(info->start[0] + (0x00000555<<1))) -#define MEM_FLASH_ADDR2 (*(volatile u16 *)(info->start[0] + (0x000002AA<<1))) - - -#define BIT_ERASE_DONE 0x0080 -#define BIT_RDY_MASK 0x0080 -#define BIT_PROGRAM_ERROR 0x0020 -#define BIT_TIMEOUT 0x80000000 /* our flag */ - -#define ERR_READY -1 - -int amd_flash_erase_sector(flash_info_t * info, int sector) -{ - int state; - ulong result; - ulong start; - - volatile u16 *addr = - (volatile u16 *) (info->start[sector]); - - 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 */ - state = 0; - start = get_timer(0); - - do { - result = *addr; - - /* check timeout */ - if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) { - MEM_FLASH_ADDR1 = CMD_READ_ARRAY; - state = ERR_TIMOUT; - } - - if (!state && (result & 0xFFFF) & BIT_ERASE_DONE) - state = ERR_READY; - } - while (!state); - if (state == ERR_READY) - state = ERR_OK; - - MEM_FLASH_ADDR1 = CMD_READ_ARRAY; - - return state; -} - -int flash_erase (flash_info_t * info, int s_first, int s_last) -{ - int iflag, cflag; - int sector; - int rc; - - rc = ERR_OK; - - if (info->flash_id == FLASH_UNKNOWN) - { - rc = ERR_UNKNOWN_FLASH_TYPE; - } /* (info->flash_id == FLASH_UNKNOWN) */ - - if ((s_first < 0) || (s_first > s_last) || s_last >= info->sector_count) - { - rc = ERR_INVAL; - } - - cflag = icache_status (); - icache_disable (); - iflag = disable_interrupts (); - - for (sector = s_first; (sector <= s_last) && (rc == ERR_OK); sector++) { - - if (info->protect[sector]) - { - putc('P'); /* protected sector will not erase */ - } - else - { - /* erase on unprotected sector */ - puts("E\b"); - switch (info->flash_id & FLASH_VENDMASK) - { - case (AMD_MANUFACT & FLASH_VENDMASK): - rc = amd_flash_erase_sector(info,sector); - break; - case (FREESCALE_MANUFACT & FLASH_VENDMASK): - rc = cfm_flash_erase_sector(info,sector); - break; - default: - return ERR_UNKNOWN_FLASH_VENDOR; - } - putc('.'); - } - } - if (rc!=ERR_OK) - { - printf ("\n "); - flash_perror (rc); - } - else - { - printf (" done\n"); - } - - udelay (10000); /* allow flash to settle - wait 10 ms */ - - if (iflag) - enable_interrupts (); - - if (cflag) - icache_enable (); - - return rc; -} - -volatile static int amd_write_word (flash_info_t * info, ulong dest, u16 data) -{ - volatile u16 *addr; - ulong result; - int cflag, iflag; - int state; - ulong start; - - /* - * Check if Flash is (sufficiently) erased - */ - addr = (volatile u16 *) dest; - - 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 */ - state = 0; - do { - result = *addr; - - /* check timeout */ - if (get_timer(start) > CONFIG_SYS_FLASH_ERASE_TOUT) { - state = ERR_TIMOUT; - } - if (!state && ((result & BIT_RDY_MASK) == (data & BIT_RDY_MASK))) - state = ERR_READY; - - } while (!state); - - *addr = CMD_READ_ARRAY; - - if (state == ERR_READY) - state = ERR_OK; - if ((*addr != data) && (state != ERR_TIMOUT)) - state = ERR_PROG_ERROR; - - if (iflag) - enable_interrupts (); - - if (cflag) - icache_enable (); - - return state; -} - -int amd_flash_write_buff(flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ - int rc; - ulong dest; - u16 data; - - rc = ERR_OK; - if (addr & 1) - { - debug ("Byte alignment not supported\n"); - rc = ERR_ALIGN; - } - if (cnt & 1) - { - debug ("Byte transfer not supported\n"); - rc = ERR_ALIGN; - } - - dest = addr; - while ((cnt>=2) && (rc == ERR_OK)) - { - data = *((volatile u16 *) src); - rc=amd_write_word (info,dest,data); - src +=2; - dest +=2; - cnt -=2; - } - return rc; -} - -int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ - int rc; - - switch (info->flash_id & FLASH_VENDMASK) - { - case (AMD_MANUFACT & FLASH_VENDMASK): - rc = amd_flash_write_buff(info,src,addr,cnt); - break; - case (FREESCALE_MANUFACT & FLASH_VENDMASK): - rc = cfm_flash_write_buff(info,src,addr,cnt); - break; - default: - rc = ERR_UNKNOWN_FLASH_VENDOR; - } - return rc; - -} -int amd_flash_protect(flash_info_t * info,long sector,int prot) -{ - int rc; - rc= ERR_OK; - if (prot) - { - info->protect[sector]=1; - } - else - { - info->protect[sector]=0; - } - return rc; -} - -#ifdef CONFIG_SYS_FLASH_PROTECTION - -int flash_real_protect(flash_info_t * info,long sector,int prot) -{ - int rc; - - switch (info->flash_id & FLASH_VENDMASK) - { - case (AMD_MANUFACT & FLASH_VENDMASK): - rc = amd_flash_protect(info,sector,prot); - break; - case (FREESCALE_MANUFACT & FLASH_VENDMASK): - rc = cfm_flash_protect(info,sector,prot); - break; - default: - rc = ERR_UNKNOWN_FLASH_VENDOR; - } - return rc; -} - -#endif |