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sh: kexec: Add PHYSICAL_START

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Add PHYSICAL_START kernel configuration parameter to set the address at
which the kernel should be loaded.

It has been observed on an sh7757lcr that simply modifying MEMORY_START
does not achieve this goal for 32bit sh. This is due to MEMORY_OFFSET in
arch/sh/kernel/vmlinux.lds.S bot being based on MEMORY_START on such
systems.

Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Simon Horman
2011-09-15 20:13:00 +09:00
committed by Paul Mundt
parent d11584a044
commit e66ac3f26a
5 changed files with 31 additions and 8 deletions
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6
arch/sh/boot/Makefile
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@@ -19,6 +19,7 @@ CONFIG_MEMORY_START ?= 0x0c000000
CONFIG_BOOT_LINK_OFFSET ?= 0x00800000
CONFIG_ZERO_PAGE_OFFSET ?= 0x00001000
CONFIG_ENTRY_OFFSET ?= 0x00001000
CONFIG_PHYSICAL_START ?= $(CONFIG_MEMORY_START)
suffix-y := bin
suffix-$(CONFIG_KERNEL_GZIP) := gz
@@ -48,7 +49,7 @@ $(obj)/romimage/vmlinux: $(obj)/zImage FORCE
$(Q)$(MAKE) $(build)=$(obj)/romimage $@
KERNEL_MEMORY := $(shell /bin/bash -c 'printf "0x%08x" \
$$[$(CONFIG_MEMORY_START) & 0x1fffffff]')
$$[$(CONFIG_PHYSICAL_START) & 0x1fffffff]')
KERNEL_LOAD := $(shell /bin/bash -c 'printf "0x%08x" \
$$[$(CONFIG_PAGE_OFFSET) + \
@@ -114,4 +115,5 @@ $(obj)/uImage: $(obj)/uImage.$(suffix-y)
@echo ' Image $@ is ready'
export CONFIG_PAGE_OFFSET CONFIG_MEMORY_START CONFIG_BOOT_LINK_OFFSET \
CONFIG_ZERO_PAGE_OFFSET CONFIG_ENTRY_OFFSET KERNEL_MEMORY suffix-y
CONFIG_PHYSICAL_START CONFIG_ZERO_PAGE_OFFSET CONFIG_ENTRY_OFFSET \
KERNEL_MEMORY suffix-y