118 lines
3.1 KiB
C
118 lines
3.1 KiB
C
/*
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* (C) Copyright 2002
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* Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com
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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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* SPI Read/Write Utilities
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*/
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#include <common.h>
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#include <command.h>
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#include <malloc.h>
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#include <config.h>
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#include <ar7240_soc.h>
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#if (CONFIG_COMMANDS & CFG_CMD_DDR)
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/*-----------------------------------------------------------------------
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* Definitions
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*/
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static void prepare_flash(char **buff_ptr,long **val)
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{
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if((long)*buff_ptr % 4)
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*buff_ptr = *buff_ptr + ((long)*buff_ptr % 4);
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memcpy(*buff_ptr,(void *)((long)UBOOT_ENV_SEC_START),CFG_FLASH_SECTOR_SIZE);
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flash_sect_erase(UBOOT_ENV_SEC_START,UBOOT_ENV_SEC_START + (CFG_FLASH_SECTOR_SIZE - 1));
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*val = (long *)(*buff_ptr + CFG_FLASH_SECTOR_SIZE - 0x30);
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}
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int do_ddr (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
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{
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char *buff,*buff_ptr = NULL;
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int ddr_config,ddr_config2,ext_mod;
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long *val;
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/*
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* We use the last specified parameters, unless new ones are
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* entered.
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*/
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/* last sector of uboot 0xbf040000 - 0xbf050000
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* write MAGIC at 0xbf04ffe0
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* write sector at 0xbf04ffe4
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* write size at 0xbf04ffe8
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*/
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if ((flag & CMD_FLAG_REPEAT) == 0)
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{
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if (argc == 2) {
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ddr_config = simple_strtoul(argv[1], NULL, 10);
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ddr_config2 = CFG_DDR_CONFIG2_VAL;
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ext_mod = CFG_DDR_EXT_MODE_VAL;
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}
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else if (argc == 3) {
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ddr_config = simple_strtoul(argv[1], NULL, 10);
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ddr_config2 = simple_strtoul(argv[2], NULL, 10);
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ext_mod = CFG_DDR_EXT_MODE_VAL;
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}
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else if (argc == 4) {
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ddr_config = simple_strtoul(argv[1], NULL, 10);
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ddr_config2 = simple_strtoul(argv[2], NULL, 10);
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ext_mod = simple_strtoul(argv[3], NULL, 10);
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}
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else {
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printf("Invalid number of arguments:%d\n",argc);
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return -1;
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}
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}
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buff = (char *) malloc(CFG_FLASH_SECTOR_SIZE + 4);
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buff_ptr = buff;
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prepare_flash(&buff_ptr,&val);
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*val++ = (long)CFG_DDR_MAGIC;
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*val++ = ddr_config;
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*val++ = ddr_config2;
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*val = ext_mod;
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flash_write(buff_ptr,(long)(UBOOT_ENV_SEC_START),CFG_FLASH_SECTOR_SIZE);
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printf("Programed values ext_mod:0x%0.8x ",*val--);
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printf(" ddr_config2:0x%0.8x ddr_config:0x%0.8x \n",*val--,*val);
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free(buff);
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return 0;
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}
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/***************************************************/
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U_BOOT_CMD(
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ddr, 6, 1, do_ddr,
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"fls - Set to change DDR settings on reboot\n",
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"<value> - DDR CONFIG\n"
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"<value> - DDR CONFIG2\n"
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"<value> - EXT MOD\n"
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);
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#endif /* CFG_CMD_SPI */
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