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authorAlban Bedel <albeu@free.fr>2014-11-07 12:44:36 +0100
committerRalf Baechle <ralf@linux-mips.org>2014-11-24 07:45:30 +0100
commitebf71ec7e14bd55d0114f625686304979ecff4d0 (patch)
tree5525eedbbefe3e711b62f71fb38ed3bfe2c13f17 /arch/mips/ath79
parent11a0f40bc98d6ae34cb3283e6008abc433e252bb (diff)
downloadlinux-ebf71ec7e14bd55d0114f625686304979ecff4d0.tar.gz
MIPS: ath79: Read the initrd address from the firmware environment
Allow loading an initrd passed by the firmware. Signed-off-by: Alban Bedel <albeu@free.fr> Cc: linux-kernel@vger.kernel.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/8354/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/ath79')
-rw-r--r--arch/mips/ath79/prom.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/ath79/prom.c b/arch/mips/ath79/prom.c
index 80a0bffe5e1..e1fe6305113 100644
--- a/arch/mips/ath79/prom.c
+++ b/arch/mips/ath79/prom.c
@@ -13,6 +13,7 @@
#include <linux/init.h>
#include <linux/io.h>
#include <linux/string.h>
+#include <linux/initrd.h>
#include <asm/bootinfo.h>
#include <asm/addrspace.h>
@@ -23,6 +24,13 @@
void __init prom_init(void)
{
fw_init_cmdline();
+
+ /* Read the initrd address from the firmware environment */
+ initrd_start = fw_getenvl("initrd_start");
+ if (initrd_start) {
+ initrd_start = KSEG0ADDR(initrd_start);
+ initrd_end = initrd_start + fw_getenvl("initrd_size");
+ }
}
void __init prom_free_prom_memory(void)