1 files changed, 72 insertions, 0 deletions
diff --git a/target/linux/amazon/files/arch/mips/amazon/prom.c b/target/linux/amazon/files/arch/mips/amazon/prom.c
new file mode 100644
index 000000000..3095fd50b
--- /dev/null
+++ b/target/linux/amazon/files/arch/mips/amazon/prom.c
@@ -0,0 +1,72 @@
+/*
+ *   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.
+ *
+ *   Copyright 2007 John Crispin <blogic@openwrt.org> 
+ */
+
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/ioport.h>
+#include <asm/bootinfo.h>
+#include <asm/amazon/amazon.h>
+#include <asm/amazon/irq.h>
+#include <asm/amazon/model.h>
+#include <asm/cpu.h>
+
+void prom_putchar(char c)
+{
+	/* Wait for FIFO to empty */
+	while ((amazon_readl(AMAZON_ASC_FSTAT) >> 8) != 0x00) ;
+	/* Crude cr/nl handling is better than none */
+	if(c == '\n')
+		amazon_writel('\r', AMAZON_ASC_TBUF);
+	amazon_writel(c, AMAZON_ASC_TBUF);
+}
+
+void __init prom_init(void)
+{
+	char **envp = (char **) fw_arg2;
+
+	int memsize = 16; /* assume 16M as default */
+
+	envp = (char **)KSEG1ADDR((unsigned long)envp);
+	while (*envp) {
+		char *e = (char *)KSEG1ADDR(*envp);
+
+		if (!strncmp(e, "memsize=", 8)) {
+			e += 8;
+			memsize = simple_strtoul(e, NULL, 10);
+		}
+		envp++;
+	}
+	memsize *= 1024 * 1024;
+
+	strcpy(&(arcs_cmdline[0]), "console=ttyS0,115200 rootfstype=squashfs,jffs2");
+	
+	add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
+}
+
+void prom_free_prom_memory(void)
+{
+}
+
+const char *get_system_type(void)
+{
+	return BOARD_SYSTEM_TYPE;
+}