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authorhauke <hauke@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-11-29 16:53:50 +0000
committerhauke <hauke@3c298f89-4303-0410-b956-a3cf2f4a3e73>2009-11-29 16:53:50 +0000
commitdeecd2f2a20b0fd7f5bcd72babf00f32f2c6a82b (patch)
treeeed7b999f00a83e335ac2e0a87f05c4eaf4c120f /target/linux/amazon/files/arch/mips
parent6da3163ec75863d4d7345d1cfada517ddacacd34 (diff)
[amazon] Read the size of the available memory from parameters passed to the kernel by firmware.
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18604 3c298f89-4303-0410-b956-a3cf2f4a3e73
Diffstat (limited to 'target/linux/amazon/files/arch/mips')
-rw-r--r--target/linux/amazon/files/arch/mips/amazon/prom.c18
1 files changed, 17 insertions, 1 deletions
diff --git a/target/linux/amazon/files/arch/mips/amazon/prom.c b/target/linux/amazon/files/arch/mips/amazon/prom.c
index f138bcbef..c5db4f5cd 100644
--- a/target/linux/amazon/files/arch/mips/amazon/prom.c
+++ b/target/linux/amazon/files/arch/mips/amazon/prom.c
@@ -59,12 +59,28 @@ void prom_printf(const char * fmt, ...)
void __init prom_init(void)
{
+ char **envp = (char **) fw_arg2;
+
+ int memsize = 16; /* assume 16M as default */
+
mips_machgroup = MACH_GROUP_INFINEON;
mips_machtype = MACH_INFINEON_AMAZON;
+ 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, 0x1000000, BOOT_MEM_RAM);
+ add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
}
void prom_free_prom_memory(void)