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-rw-r--r--arch/arm/boot/compressed/Makefile2
-rw-r--r--arch/arm/boot/compressed/head.S18
2 files changed, 16 insertions, 4 deletions
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 0c6852d9350..79b5c62746d 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -98,8 +98,6 @@ endif
ccflags-y := -fpic -fno-builtin
asflags-y := -Wa,-march=all
-# Provide size of uncompressed kernel to the decompressor via a linker symbol.
-LDFLAGS_vmlinux = --defsym _image_size=$(shell stat -c "%s" $(obj)/../Image)
# Supply ZRELADDR to the decompressor via a linker symbol.
ifneq ($(CONFIG_AUTO_ZRELADDR),y)
LDFLAGS_vmlinux += --defsym zreladdr=$(ZRELADDR)
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index d1fd1cfca9c..b541217bd04 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -187,7 +187,7 @@ not_angel:
bl cache_on
restart: adr r0, LC0
- ldmia r0, {r1, r2, r3, r6, r9, r11, r12}
+ ldmia r0, {r1, r2, r3, r6, r10, r11, r12}
ldr sp, [r0, #28]
/*
@@ -196,6 +196,20 @@ restart: adr r0, LC0
*/
sub r0, r0, r1 @ calculate the delta offset
add r6, r6, r0 @ _edata
+ add r10, r10, r0 @ inflated kernel size location
+
+ /*
+ * The kernel build system appends the size of the
+ * decompressed kernel at the end of the compressed data
+ * in little-endian form.
+ */
+ ldrb r9, [r10, #0]
+ ldrb lr, [r10, #1]
+ orr r9, r9, lr, lsl #8
+ ldrb lr, [r10, #2]
+ ldrb r10, [r10, #3]
+ orr r9, r9, lr, lsl #16
+ orr r9, r9, r10, lsl #24
#ifndef CONFIG_ZBOOT_ROM
/* malloc space is above the relocated stack (64k max) */
@@ -355,7 +369,7 @@ LC0: .word LC0 @ r1
.word __bss_start @ r2
.word _end @ r3
.word _edata @ r6
- .word _image_size @ r9
+ .word input_data_end - 4 @ r10 (inflated size location)
.word _got_start @ r11
.word _got_end @ ip
.word user_stack_end @ sp