4 files changed, 112 insertions, 10 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index a53ac6570b66..0b0cf0d2872f 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1490,6 +1490,105 @@ config ATAGS_PROC
           Should the atags used to boot the kernel be exported in an "atags"
           file in procfs. Useful with kexec.
 
+config AUTO_ZRELADDR
+        bool "Auto calculation of the decompressed kernel image address"
+        depends on !ZBOOT_ROM && !ARCH_U300
+        help
+          ZRELADDR is the physical address where the decompressed kernel
+          image will be placed. If AUTO_ZRELADDR is selected, the address
+          will be determined at run-time by masking the current IP with
+          0xf8000000. This assumes the zImage being placed in the first 128MB
+          from start of memory.
+
+config ZRELADDR
+        hex "Physical address of the decompressed kernel image"
+        depends on !AUTO_ZRELADDR
+        default 0x00008000 if ARCH_BCMRING ||\
+                ARCH_CNS3XXX ||\
+                ARCH_DOVE ||\
+                ARCH_EBSA110 ||\
+                ARCH_FOOTBRIDGE ||\
+                ARCH_INTEGRATOR ||\
+                ARCH_IOP13XX ||\
+                ARCH_IOP33X ||\
+                ARCH_IXP2000 ||\
+                ARCH_IXP23XX ||\
+                ARCH_IXP4XX ||\
+                ARCH_KIRKWOOD ||\
+                ARCH_KS8695 ||\
+                ARCH_LOKI ||\
+                ARCH_MMP ||\
+                ARCH_MV78XX0 ||\
+                ARCH_NOMADIK ||\
+                ARCH_NUC93X ||\
+                ARCH_NS9XXX ||\
+                ARCH_ORION5X ||\
+                ARCH_SPEAR3XX ||\
+                ARCH_SPEAR6XX ||\
+                ARCH_U8500 ||\
+                ARCH_VERSATILE ||\
+                ARCH_W90X900
+        default 0x08008000 if ARCH_MX1 ||\
+                ARCH_SHARK
+        default 0x10008000 if ARCH_MSM ||\
+                ARCH_OMAP1 ||\
+                ARCH_RPC
+        default 0x20008000 if ARCH_S5P6440 ||\
+                ARCH_S5P6442 ||\
+                ARCH_S5PC100 ||\
+                ARCH_S5PV210
+        default 0x30008000 if ARCH_S3C2410 ||\
+                ARCH_S3C2400 ||\
+                ARCH_S3C2412 ||\
+                ARCH_S3C2416 ||\
+                ARCH_S3C2440 ||\
+                ARCH_S3C2443
+        default 0x40008000 if ARCH_STMP378X ||\
+                ARCH_STMP37XX ||\
+                ARCH_SH7372 ||\
+                ARCH_SH7377
+        default 0x50008000 if ARCH_S3C64XX ||\
+                ARCH_SH7367
+        default 0x60008000 if ARCH_VEXPRESS
+        default 0x80008000 if ARCH_MX25 ||\
+                ARCH_MX3 ||\
+                ARCH_NETX ||\
+                ARCH_OMAP2PLUS ||\
+                ARCH_PNX4008
+        default 0x90008000 if ARCH_MX5 ||\
+                ARCH_MX91231
+        default 0xa0008000 if ARCH_IOP32X ||\
+                ARCH_PXA ||\
+                MACH_MX27
+        default 0xc0008000 if ARCH_LH7A40X ||\
+                MACH_MX21
+        default 0xf0008000 if ARCH_AAEC2000 ||\
+                ARCH_L7200
+        default 0xc0028000 if ARCH_CLPS711X
+        default 0x70008000 if ARCH_AT91 && (ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
+        default 0x20008000 if ARCH_AT91 && !(ARCH_AT91CAP9 || ARCH_AT91SAM9G45)
+        default 0xc0008000 if ARCH_DAVINCI && ARCH_DAVINCI_DA8XX
+        default 0x80008000 if ARCH_DAVINCI && !ARCH_DAVINCI_DA8XX
+        default 0x00008000 if ARCH_EP93XX && EP93XX_SDCE3_SYNC_PHYS_OFFSET
+        default 0xc0008000 if ARCH_EP93XX && EP93XX_SDCE0_PHYS_OFFSET
+        default 0xd0008000 if ARCH_EP93XX && EP93XX_SDCE1_PHYS_OFFSET
+        default 0xe0008000 if ARCH_EP93XX && EP93XX_SDCE2_PHYS_OFFSET
+        default 0xf0008000 if ARCH_EP93XX && EP93XX_SDCE3_ASYNC_PHYS_OFFSET
+        default 0x00008000 if ARCH_GEMINI && GEMINI_MEM_SWAP
+        default 0x10008000 if ARCH_GEMINI && !GEMINI_MEM_SWAP
+        default 0x70008000 if ARCH_REALVIEW && REALVIEW_HIGH_PHYS_OFFSET
+        default 0x00008000 if ARCH_REALVIEW && !REALVIEW_HIGH_PHYS_OFFSET
+        default 0xc0208000 if ARCH_SA1100 && SA1111
+        default 0xc0008000 if ARCH_SA1100 && !SA1111
+        default 0x30108000 if ARCH_S3C2410 && PM_H1940
+        default 0x28E08000 if ARCH_U300 && MACH_U300_SINGLE_RAM
+        default 0x48008000 if ARCH_U300 && !MACH_U300_SINGLE_RAM
+        help
+          ZRELADDR is the physical address where the decompressed kernel
+          image will be placed. ZRELADDR has to be specified when the
+          assumption of AUTO_ZRELADDR is not valid, or when ZBOOT_ROM is
+          selected.
+
 endmenu
 
 menu "CPU Power Management"
diff --git a/arch/arm/boot/Makefile b/arch/arm/boot/Makefile
index 4a590f4113e2..f705213caa88 100644
--- a/arch/arm/boot/Makefile
+++ b/arch/arm/boot/Makefile
@@ -14,18 +14,16 @@
 MKIMAGE         := $(srctree)/scripts/mkuboot.sh
 
 ifneq ($(MACHINE),)
-include $(srctree)/$(MACHINE)/Makefile.boot
+-include $(srctree)/$(MACHINE)/Makefile.boot
 endif
 
 # Note: the following conditions must always be true:
-#   ZRELADDR == virt_to_phys(PAGE_OFFSET + TEXT_OFFSET)
 #   PARAMS_PHYS must be within 4MB of ZRELADDR
 #   INITRD_PHYS must be in RAM
-ZRELADDR    := $(zreladdr-y)
 PARAMS_PHYS := $(params_phys-y)
 INITRD_PHYS := $(initrd_phys-y)
 
-export ZRELADDR INITRD_PHYS PARAMS_PHYS
+export INITRD_PHYS PARAMS_PHYS
 
 targets := Image zImage xipImage bootpImage uImage
 
@@ -67,7 +65,7 @@ quiet_cmd_uimage = UIMAGE  $@
 ifeq ($(CONFIG_ZBOOT_ROM),y)
 $(obj)/uImage: LOADADDR=$(CONFIG_ZBOOT_ROM_TEXT)
 else
-$(obj)/uImage: LOADADDR=$(ZRELADDR)
+$(obj)/uImage: LOADADDR=$(CONFIG_ZRELADDR)
 endif
 
 ifeq ($(CONFIG_THUMB2_KERNEL),y)
diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile
index 2a80c9de6eaf..cc8380b879fe 100644
--- a/arch/arm/boot/compressed/Makefile
+++ b/arch/arm/boot/compressed/Makefile
@@ -4,6 +4,7 @@
 # create a compressed vmlinuz image from the original vmlinux
 #
 
+AFLAGS_head.o += -DTEXT_OFFSET=$(TEXT_OFFSET)
 HEAD    = head.o
 OBJS    = misc.o decompress.o
 FONTC   = $(srctree)/drivers/video/console/font_acorn_8x8.c
@@ -79,8 +80,6 @@ endif
 EXTRA_CFLAGS  := -fpic -fno-builtin
 EXTRA_AFLAGS  := -Wa,-march=all
 
-# Supply ZRELADDR to the decompressor via a linker symbol.
-LDFLAGS_vmlinux := --defsym zreladdr=$(ZRELADDR)
 ifeq ($(CONFIG_CPU_ENDIAN_BE8),y)
 LDFLAGS_vmlinux += --be8
 endif
diff --git a/arch/arm/boot/compressed/head.S b/arch/arm/boot/compressed/head.S
index d27faa131796..abf4d65acf62 100644
--- a/arch/arm/boot/compressed/head.S
+++ b/arch/arm/boot/compressed/head.S
@@ -170,9 +170,16 @@ not_angel:
 
                 .text
                 adr     r0, LC0
- ARM(           ldmia   r0, {r1, r2, r3, r4, r5, r6, r11, ip, sp})
- THUMB(         ldmia   r0, {r1, r2, r3, r4, r5, r6, r11, ip}   )
+ ARM(           ldmia   r0, {r1, r2, r3, r5, r6, r11, ip, sp})
+ THUMB(         ldmia   r0, {r1, r2, r3, r5, r6, r11, ip}       )
  THUMB(         ldr     sp, [r0, #32]                           )
+#ifdef CONFIG_AUTO_ZRELADDR
+                @ determine final kernel image address
+                and     r4, pc, #0xf8000000
+                add     r4, r4, #TEXT_OFFSET
+#else
+                ldr     r4, =CONFIG_ZRELADDR
+#endif
                 subs    r0, r0, r1              @ calculate the delta offset
 
                                                 @ if delta is zero, we are
@@ -310,7 +317,6 @@ wont_overwrite:	mov	r0, r4
 LC0:            .word   LC0                     @ r1
                 .word   __bss_start             @ r2
                 .word   _end                    @ r3
-                .word   zreladdr                @ r4
                 .word   _start                  @ r5
                 .word   _image_size             @ r6
                 .word   _got_start              @ r11