72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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, MA 02111-1307, USA.
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*
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* Copyright 2007 John Crispin <blogic@openwrt.org>
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*/
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#include <linux/init.h>
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#include <linux/string.h>
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#include <linux/ctype.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/bootmem.h>
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#include <linux/ioport.h>
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#include <asm/bootinfo.h>
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#include <asm/amazon/amazon.h>
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#include <asm/amazon/irq.h>
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#include <asm/amazon/model.h>
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#include <asm/cpu.h>
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void prom_putchar(char c)
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{
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/* Wait for FIFO to empty */
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while ((amazon_readl(AMAZON_ASC_FSTAT) >> 8) != 0x00) ;
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/* Crude cr/nl handling is better than none */
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if(c == '\n')
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amazon_writel('\r', AMAZON_ASC_TBUF);
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amazon_writel(c, AMAZON_ASC_TBUF);
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}
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void __init prom_init(void)
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{
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char **envp = (char **) fw_arg2;
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int memsize = 16; /* assume 16M as default */
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envp = (char **)KSEG1ADDR((unsigned long)envp);
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while (*envp) {
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char *e = (char *)KSEG1ADDR(*envp);
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if (!strncmp(e, "memsize=", 8)) {
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e += 8;
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memsize = simple_strtoul(e, NULL, 10);
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}
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envp++;
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}
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memsize *= 1024 * 1024;
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strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2");
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add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
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}
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void prom_free_prom_memory(void)
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{
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}
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const char *get_system_type(void)
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{
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return BOARD_SYSTEM_TYPE;
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}
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