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powerpc/boot: Add a global entry point for pseries

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When entering the boot wrapper in little endian, we will need to fix
the endian order using a fixup trampoline like in the kernel. This
patch overrides the _zimage_start entry point for this purpose.

Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Cédric Le Goater 2014-04-24 09:23:38 +02:00 committed by Benjamin Herrenschmidt
parent f16e968499
commit 2d9afb369b
3 changed files with 11 additions and 1 deletions
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5
arch/powerpc/boot/Makefile
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@ -99,6 +99,11 @@ src-plat-$(CONFIG_EMBEDDED6xx) += cuboot-pq2.c cuboot-mpc7448hpc2.c \
src-plat-$(CONFIG_AMIGAONE) += cuboot-amigaone.c src-plat-$(CONFIG_AMIGAONE) += cuboot-amigaone.c
src-plat-$(CONFIG_PPC_PS3) += ps3-head.S ps3-hvcall.S ps3.c src-plat-$(CONFIG_PPC_PS3) += ps3-head.S ps3-hvcall.S ps3.c
src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c epapr-wrapper.c src-plat-$(CONFIG_EPAPR_BOOT) += epapr.c epapr-wrapper.c
src-plat-$(CONFIG_PPC_PSERIES) += pseries-head.S
src-plat-$(CONFIG_PPC_POWERNV) += pseries-head.S
src-plat-$(CONFIG_PPC_IBM_CELL_BLADE) += pseries-head.S
src-plat-$(CONFIG_PPC_CELLEB) += pseries-head.S
src-plat-$(CONFIG_PPC_CELL_QPACE) += pseries-head.S
src-wlib := $(sort $(src-wlib-y)) src-wlib := $(sort $(src-wlib-y))
src-plat := $(sort $(src-plat-y)) src-plat := $(sort $(src-plat-y))

5
arch/powerpc/boot/pseries-head.S Normal file
View file

@ -0,0 +1,5 @@
.text
.globl _zimage_start
_zimage_start:
b _zimage_start_lib

2
arch/powerpc/boot/wrapper
View file

@ -152,7 +152,7 @@ of)
make_space=n make_space=n
;; ;;
pseries) pseries)
platformo="$object/of.o $object/epapr.o" platformo="$object/pseries-head.o $object/of.o $object/epapr.o"
link_address='0x4000000' link_address='0x4000000'
make_space=n make_space=n
;; ;;