mirror of
https://source.denx.de/u-boot/u-boot.git
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100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
/*
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* (C) Copyright 2005
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* Greg Ungerer, OpenGear Inc, <greg.ungerer@opengear.com>
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*
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* (C) Copyright 2002
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* Kyle Harris, Nexus Technologies, Inc. kharris@nexus-tech.net
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*
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* (C) Copyright 2002
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* Sysgo Real-Time Solutions, GmbH <www.elinos.com>
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* Marius Groeger <mgroeger@sysgo.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/platform.h>
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DECLARE_GLOBAL_DATA_PTR;
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/* ------------------------------------------------------------------------- */
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#define ks8695_read(a) *((volatile unsigned int *) (KS8695_IO_BASE+(a)))
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#define ks8695_write(a,b) *((volatile unsigned int *) (KS8695_IO_BASE+(a))) = (b)
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/* ------------------------------------------------------------------------- */
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/*
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* Miscelaneous platform dependent initialisations
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*/
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int env_flash_cmdline (void)
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{
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unsigned char *sp = (unsigned char *) 0x0201c020;
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unsigned char *ep;
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int len;
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/* Check if "erase" push button is depressed */
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if ((ks8695_read(KS8695_GPIO_DATA) & 0x8) == 0) {
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printf("### Entering network recovery mode...\n");
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setenv("bootargs", "console=ttyAM0,115200 mem=32M initrd=0x400000,8M root=/dev/ram0");
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setenv("bootcmd", "bootp 0x400000; gofsk 0x400000");
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setenv("bootdelay", "2");
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return 0;
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}
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/* Check for flash based kernel boot args to use as default */
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for (ep = sp, len = 0; ((len < 1024) && (*ep != 0)); ep++, len++)
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;
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if ((len > 0) && (len <1024))
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setenv("bootargs", sp);
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return 0;
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}
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int board_late_init (void)
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{
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return 0;
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}
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int board_init (void)
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{
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/* arch number of CM41xx */
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gd->bd->bi_arch_number = 672;
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/* adress of boot parameters */
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gd->bd->bi_boot_params = 0x00000100;
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/* power down all but port 0 on the switch */
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ks8695_write(KS8695_SWITCH_LPPM12, 0x00000005);
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ks8695_write(KS8695_SWITCH_LPPM34, 0x00050005);
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return 0;
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}
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int dram_init (void)
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{
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gd->bd->bi_dram[0].start = PHYS_SDRAM_1;
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gd->bd->bi_dram[0].size = PHYS_SDRAM_1_SIZE;
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return (0);
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}
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