MIPS: BMIPS: Support APPENDED_DTB
Use appended DTB when available.
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14337/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/bmips/setup.c b/arch/mips/bmips/setup.c
index edf1b31..3b6f687 100644
--- a/arch/mips/bmips/setup.c
+++ b/arch/mips/bmips/setup.c
@@ -17,6 +17,7 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/of_platform.h>
+#include <linux/libfdt.h>
#include <linux/smp.h>
#include <asm/addrspace.h>
#include <asm/bmips.h>
@@ -152,6 +153,8 @@
mips_hpt_frequency = freq;
}
+extern const char __appended_dtb;
+
void __init plat_mem_setup(void)
{
void *dtb;
@@ -161,6 +164,11 @@
ioport_resource.start = 0;
ioport_resource.end = ~0;
+#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
+ if (!fdt_check_header(&__appended_dtb))
+ dtb = (void *)&__appended_dtb;
+ else
+#endif
/* intended to somewhat resemble ARM; see Documentation/arm/Booting */
if (fw_arg0 == 0 && fw_arg1 == 0xffffffff)
dtb = phys_to_virt(fw_arg2);