https://github.com/torvalds/linux
Revision dbc9632a8c25c6efcc1ca3f3a2177c855b6e053e authored by Kumar Gala on 21 April 2010, 07:12:58 UTC, committed by Kumar Gala on 26 April 2010, 22:54:15 UTC
The following commit broke CONFIG_RELOCATABLE support on FSL Book-E parts: commit 549e8152de8039506f69c677a4546e5427aa6ae7 Author: Paul Mackerras <paulus@samba.org> Date: Sat Aug 30 11:43:47 2008 +1000 powerpc: Make the 64-bit kernel as a position-independent executable The change to __va and __pa to use PAGE_OFFSET & MEMORY_START causes problems on the Book-E parts because we don't know MEMORY_START until after we parse the device tree. We need __va to work properly to even parse the device tree so we have a chicken an egg. So go back to using he other definition of __va/__pa on CONFIG_BOOKE and use the PAGE_OFFSET/MEMORY_START version on "Classic" PPC64. Also updated casts to handle phys_addr_t being a different size from unsigned long (ie 36-bit physical on PPC32). Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
1 parent b4d0a03
Tip revision: dbc9632a8c25c6efcc1ca3f3a2177c855b6e053e authored by Kumar Gala on 21 April 2010, 07:12:58 UTC
powerpc/fsl-booke: Fix CONFIG_RELOCATABLE support on FSL Book-E ppc32
powerpc/fsl-booke: Fix CONFIG_RELOCATABLE support on FSL Book-E ppc32
Tip revision: dbc9632
Kbuild
#
# Kbuild for top-level directory of the kernel
# This file takes care of the following:
# 1) Generate bounds.h
# 2) Generate asm-offsets.h (may need bounds.h)
# 3) Check for missing system calls
#####
# 1) Generate bounds.h
bounds-file := include/generated/bounds.h
always := $(bounds-file)
targets := $(bounds-file) kernel/bounds.s
quiet_cmd_bounds = GEN $@
define cmd_bounds
(set -e; \
echo "#ifndef __LINUX_BOUNDS_H__"; \
echo "#define __LINUX_BOUNDS_H__"; \
echo "/*"; \
echo " * DO NOT MODIFY."; \
echo " *"; \
echo " * This file was generated by Kbuild"; \
echo " *"; \
echo " */"; \
echo ""; \
sed -ne $(sed-y) $<; \
echo ""; \
echo "#endif" ) > $@
endef
# We use internal kbuild rules to avoid the "is up to date" message from make
kernel/bounds.s: kernel/bounds.c FORCE
$(Q)mkdir -p $(dir $@)
$(call if_changed_dep,cc_s_c)
$(obj)/$(bounds-file): kernel/bounds.s Kbuild
$(Q)mkdir -p $(dir $@)
$(call cmd,bounds)
#####
# 2) Generate asm-offsets.h
#
offsets-file := include/generated/asm-offsets.h
always += $(offsets-file)
targets += $(offsets-file)
targets += arch/$(SRCARCH)/kernel/asm-offsets.s
# Default sed regexp - multiline due to syntax constraints
define sed-y
"/^->/{s:->#\(.*\):/* \1 */:; \
s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
s:->::; p;}"
endef
quiet_cmd_offsets = GEN $@
define cmd_offsets
(set -e; \
echo "#ifndef __ASM_OFFSETS_H__"; \
echo "#define __ASM_OFFSETS_H__"; \
echo "/*"; \
echo " * DO NOT MODIFY."; \
echo " *"; \
echo " * This file was generated by Kbuild"; \
echo " *"; \
echo " */"; \
echo ""; \
sed -ne $(sed-y) $<; \
echo ""; \
echo "#endif" ) > $@
endef
# We use internal kbuild rules to avoid the "is up to date" message from make
arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \
$(obj)/$(bounds-file) FORCE
$(Q)mkdir -p $(dir $@)
$(call if_changed_dep,cc_s_c)
$(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild
$(call cmd,offsets)
#####
# 3) Check for missing system calls
#
quiet_cmd_syscalls = CALL $<
cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)
PHONY += missing-syscalls
missing-syscalls: scripts/checksyscalls.sh FORCE
$(call cmd,syscalls)
# Delete all targets during make clean
clean-files := $(addprefix $(objtree)/,$(filter-out $(bounds-file) $(offsets-file),$(targets)))
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