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Subject[PATCH V2 2/5] MIPS: Allow platforms to specify the decompressor load address
Date
Platforms which use raw zboot images may need to link the image at
a fixed address if there is no other way to communicate the load
address to the bootloader. Allow the per-platform Kbuild files
to specify an optional zboot image load address (zload-y) and fall
back to calc_vmlinuz_load_addr if unset.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
---
No changes from v1.
---
arch/mips/boot/compressed/Makefile | 6 ++++--
arch/mips/jz4740/Platform | 1 +
2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/arch/mips/boot/compressed/Makefile b/arch/mips/boot/compressed/Makefile
index 61af6b6..82d0b13 100644
--- a/arch/mips/boot/compressed/Makefile
+++ b/arch/mips/boot/compressed/Makefile
@@ -12,6 +12,8 @@
# Author: Wu Zhangjin <wuzhangjin@gmail.com>
#

+include $(srctree)/arch/mips/Kbuild.platforms
+
# set the default size of the mallocing area for decompressing
BOOT_HEAP_SIZE := 0x400000

@@ -66,8 +68,8 @@ $(obj)/piggy.o: $(obj)/dummy.o $(obj)/vmlinux.bin.z FORCE
# Calculate the load address of the compressed kernel image
hostprogs-y := calc_vmlinuz_load_addr

-ifeq ($(CONFIG_MACH_JZ4740),y)
-VMLINUZ_LOAD_ADDRESS := 0x80600000
+ifneq ($(zload-y),)
+VMLINUZ_LOAD_ADDRESS := $(zload-y)
else
VMLINUZ_LOAD_ADDRESS = $(shell $(obj)/calc_vmlinuz_load_addr \
$(obj)/vmlinux.bin $(VMLINUX_LOAD_ADDRESS))
diff --git a/arch/mips/jz4740/Platform b/arch/mips/jz4740/Platform
index ba91be9..c41d300 100644
--- a/arch/mips/jz4740/Platform
+++ b/arch/mips/jz4740/Platform
@@ -1,3 +1,4 @@
platform-$(CONFIG_MACH_JZ4740) += jz4740/
cflags-$(CONFIG_MACH_JZ4740) += -I$(srctree)/arch/mips/include/asm/mach-jz4740
load-$(CONFIG_MACH_JZ4740) += 0xffffffff80010000
+zload-$(CONFIG_MACH_JZ4740) += 0xffffffff80600000
--
2.2.0.rc0.207.ga3a616c


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