mirror of
https://github.com/AsahiLinux/u-boot
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86 lines
2.3 KiB
C
86 lines
2.3 KiB
C
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/*
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* (C) Copyright 2006
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* Stefan Roese, DENX Software Engineering, sr@denx.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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#include <common.h>
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#include <asm/arch/ixp425.h>
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/*
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* include common flash code (for esd boards)
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*/
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#include "../common/flash.c"
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/*
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* Prototypes
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*/
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static ulong flash_get_size (vu_long * addr, flash_info_t * info);
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static inline ulong ld(ulong x)
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{
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ulong k = 0;
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while (x >>= 1)
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++k;
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return k;
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}
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unsigned long flash_init(void)
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{
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unsigned long size;
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int i;
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/* Init: no FLASHes known */
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for (i=0; i<CFG_MAX_FLASH_BANKS; i++)
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flash_info[i].flash_id = FLASH_UNKNOWN;
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size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
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if (flash_info[0].flash_id == FLASH_UNKNOWN)
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printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
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size, size<<20);
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/* Reconfigure CS0 to actual FLASH size */
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*IXP425_EXP_CS0 = (*IXP425_EXP_CS0 & ~0x00003C00) | ((ld(size) - 9) << 10);
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/* Monitor protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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CFG_MONITOR_BASE, CFG_MONITOR_BASE + monitor_flash_len - 1,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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/* Environment protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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CFG_ENV_ADDR,
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CFG_ENV_ADDR + CFG_ENV_SECT_SIZE - 1,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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/* Redundant environment protection ON by default */
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flash_protect(FLAG_PROTECT_SET,
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CFG_ENV_ADDR_REDUND,
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CFG_ENV_ADDR_REDUND + CFG_ENV_SIZE_REDUND - 1,
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&flash_info[CFG_MAX_FLASH_BANKS - 1]);
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flash_info[0].size = size;
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return size;
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}
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