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| author | Wolfgang Denk <wd@denx.de> | 2010-11-12 22:24:06 +0100 | 
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| committer | Wolfgang Denk <wd@denx.de> | 2010-11-12 22:24:06 +0100 | 
| commit | d963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0 (patch) | |
| tree | 07dd5889d73f4b66ad608815adcf6f2f953d9501 /board/wepep250/flash.c | |
| parent | 66fca016057b1c6b697552cc7220ebada9d4f82d (diff) | |
| parent | 0c0892be0d93a5a892b93739c5eb3bf692fed4ff (diff) | |
| download | olio-uboot-2014.01-d963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0.tar.xz olio-uboot-2014.01-d963e84c92a63b4e6c4f2f80482a5ecbe9b24fe0.zip | |
Merge branch 'master' of /home/wd/git/u-boot/master
Diffstat (limited to 'board/wepep250/flash.c')
| -rw-r--r-- | board/wepep250/flash.c | 324 | 
1 files changed, 0 insertions, 324 deletions
| diff --git a/board/wepep250/flash.c b/board/wepep250/flash.c deleted file mode 100644 index c6e917167..000000000 --- a/board/wepep250/flash.c +++ /dev/null @@ -1,324 +0,0 @@ -/* - * Copyright (C) 2003 ETC s.r.o. - * - * This code was inspired by Marius Groeger and Kyle Harris code - * available in other board ports for U-Boot - * - * 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 - * - * Written by Peter Figuli <peposh@etc.sk>, 2003. - * - */ - -#include <common.h> -#include "intel.h" - - -/* - * This code should handle CFI FLASH memory device. This code is very - * minimalistic approach without many essential error handling code as well. - * Because U-Boot actually is missing smart handling of FLASH device, - * we just set flash_id to anything else to FLASH_UNKNOW, so common code - * can call us without any restrictions. - * TODO: Add CFI Query, to be able to determine FLASH device. - * TODO: Add error handling code - * NOTE: This code was tested with BUS_WIDTH 4 and ITERLEAVE 2 only, but - *       hopefully may work with other configurations. - */ - -#if ( WEP_FLASH_BUS_WIDTH == 1 ) -#  define FLASH_BUS vu_char -#  define FLASH_BUS_RET u_char -#  if ( WEP_FLASH_INTERLEAVE == 1 ) -#    define FLASH_CMD( x ) x -#  else -#    error "With 8bit bus only one chip is allowed" -#  endif - - -#elif ( WEP_FLASH_BUS_WIDTH == 2 ) -#  define FLASH_BUS vu_short -#  define FLASH_BUS_RET u_short -#  if ( WEP_FLASH_INTERLEAVE == 1 ) -#    define FLASH_CMD( x ) x -#  elif ( WEP_FLASH_INTERLEAVE == 2 ) -#    define FLASH_CMD( x ) (( x << 8 )| x ) -#  else -#    error "With 16bit bus only 1 or 2 chip(s) are allowed" -#  endif - - -#elif ( WEP_FLASH_BUS_WIDTH == 4 ) -#  define FLASH_BUS vu_long -#  define FLASH_BUS_RET u_long -#  if ( WEP_FLASH_INTERLEAVE == 1 ) -#    define FLASH_CMD( x ) x -#  elif ( WEP_FLASH_INTERLEAVE == 2 ) -#    define FLASH_CMD( x ) (( x << 16 )| x ) -#  elif ( WEP_FLASH_INTERLEAVE == 4 ) -#    define FLASH_CMD( x ) (( x << 24 )|( x << 16 ) ( x << 8 )| x ) -#  else -#    error "With 32bit bus only 1,2 or 4 chip(s) are allowed" -#  endif - -#else -#  error "Flash bus width might be 1,2,4 for 8,16,32 bit configuration" -#endif - - -flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS]; - -static FLASH_BUS_RET flash_status_reg (void) -{ - -	FLASH_BUS *addr = (FLASH_BUS *) 0; - -	*addr = FLASH_CMD (CFI_INTEL_CMD_READ_STATUS_REGISTER); - -	return *addr; -} - -static int flash_ready (ulong timeout) -{ -	int ok = 1; - -	reset_timer_masked (); -	while ((flash_status_reg () & FLASH_CMD (CFI_INTEL_SR_READY)) != -		   FLASH_CMD (CFI_INTEL_SR_READY)) { -		if (get_timer_masked () > timeout && timeout != 0) { -			ok = 0; -			break; -		} -	} -	return ok; -} - -#if ( CONFIG_SYS_MAX_FLASH_BANKS != 1 ) -#  error "WEP platform has only one flash bank!" -#endif - - -ulong flash_init (void) -{ -	int i; -	FLASH_BUS address = WEP_FLASH_BASE; - -	flash_info[0].size = WEP_FLASH_BANK_SIZE; -	flash_info[0].sector_count = CONFIG_SYS_MAX_FLASH_SECT; -	flash_info[0].flash_id = INTEL_MANUFACT; -	memset (flash_info[0].protect, 0, CONFIG_SYS_MAX_FLASH_SECT); - -	for (i = 0; i < CONFIG_SYS_MAX_FLASH_SECT; i++) { -		flash_info[0].start[i] = address; -#ifdef WEP_FLASH_UNLOCK -		/* Some devices are hw locked after start. */ -		*((FLASH_BUS *) address) = FLASH_CMD (CFI_INTEL_CMD_LOCK_SETUP); -		*((FLASH_BUS *) address) = FLASH_CMD (CFI_INTEL_CMD_UNLOCK_BLOCK); -		flash_ready (0); -		*((FLASH_BUS *) address) = FLASH_CMD (CFI_INTEL_CMD_READ_ARRAY); -#endif -		address += WEP_FLASH_SECT_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 WEP_FLASH_BANK_SIZE; -} - -void flash_print_info (flash_info_t * info) -{ -	int i; - -	printf (" Intel vendor\n"); -	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)) { -			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) -{ -	int flag, non_protected = 0, sector; -	int rc = ERR_OK; - -	FLASH_BUS *address; - -	for (sector = s_first; sector <= s_last; sector++) { -		if (!info->protect[sector]) { -			non_protected++; -		} -	} - -	if (!non_protected) { -		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. -	 */ -	flag = disable_interrupts (); - - -	/* Start erase on unprotected sectors */ -	for (sector = s_first; sector <= s_last && !ctrlc (); sector++) { -		if (info->protect[sector]) { -			printf ("Protected sector %2d skipping...\n", sector); -			continue; -		} else { -			printf ("Erasing sector %2d ... ", sector); -		} - -		address = (FLASH_BUS *) (info->start[sector]); - -		*address = FLASH_CMD (CFI_INTEL_CMD_BLOCK_ERASE); -		*address = FLASH_CMD (CFI_INTEL_CMD_CONFIRM); -		if (flash_ready (CONFIG_SYS_FLASH_ERASE_TOUT)) { -			*address = FLASH_CMD (CFI_INTEL_CMD_CLEAR_STATUS_REGISTER); -			printf ("ok.\n"); -		} else { -			*address = FLASH_CMD (CFI_INTEL_CMD_SUSPEND); -			rc = ERR_TIMOUT; -			printf ("timeout! Aborting...\n"); -			break; -		} -		*address = FLASH_CMD (CFI_INTEL_CMD_READ_ARRAY); -	} -	if (ctrlc ()) -		printf ("User Interrupt!\n"); - -	/* allow flash to settle - wait 10 ms */ -	udelay_masked (10000); -	if (flag) { -		enable_interrupts (); -	} - -	return rc; -} - -static int write_data (flash_info_t * info, ulong dest, FLASH_BUS data) -{ -	FLASH_BUS *address = (FLASH_BUS *) dest; -	int rc = ERR_OK; -	int flag; - -	/* Check if Flash is (sufficiently) erased */ -	if ((*address & 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. -	 */ - -	flag = disable_interrupts (); - -	*address = FLASH_CMD (CFI_INTEL_CMD_CLEAR_STATUS_REGISTER); -	*address = FLASH_CMD (CFI_INTEL_CMD_PROGRAM1); -	*address = data; - -	if (!flash_ready (CONFIG_SYS_FLASH_WRITE_TOUT)) { -		*address = FLASH_CMD (CFI_INTEL_CMD_SUSPEND); -		rc = ERR_TIMOUT; -		printf ("timeout! Aborting...\n"); -	} - -	*address = FLASH_CMD (CFI_INTEL_CMD_READ_ARRAY); -	if (flag) { -		enable_interrupts (); -	} - -	return rc; -} - -int write_buff (flash_info_t * info, uchar * src, ulong addr, ulong cnt) -{ -	ulong read_addr, write_addr; -	FLASH_BUS data; -	int i, result = ERR_OK; - - -	read_addr = addr & ~(sizeof (FLASH_BUS) - 1); -	write_addr = read_addr; -	if (read_addr != addr) { -		data = 0; -		for (i = 0; i < sizeof (FLASH_BUS); i++) { -			if (read_addr < addr || cnt == 0) { -				data |= *((uchar *) read_addr) << i * 8; -			} else { -				data |= (*src++) << i * 8; -				cnt--; -			} -			read_addr++; -		} -		if ((result = write_data (info, write_addr, data)) != ERR_OK) { -			return result; -		} -		write_addr += sizeof (FLASH_BUS); -	} -	for (; cnt >= sizeof (FLASH_BUS); cnt -= sizeof (FLASH_BUS)) { -		if ((result = write_data (info, write_addr, -								  *((FLASH_BUS *) src))) != ERR_OK) { -			return result; -		} -		write_addr += sizeof (FLASH_BUS); -		src += sizeof (FLASH_BUS); -	} -	if (cnt > 0) { -		read_addr = write_addr; -		data = 0; -		for (i = 0; i < sizeof (FLASH_BUS); i++) { -			if (cnt > 0) { -				data |= (*src++) << i * 8; -				cnt--; -			} else { -				data |= *((uchar *) read_addr) << i * 8; -			} -			read_addr++; -		} -		if ((result = write_data (info, write_addr, data)) != 0) { -			return result; -		} -	} -	return ERR_OK; -} |