[PATCH] powerpc: Add back support for booting from BootX (#2)

ARCH=powerpc couldn't boot from BootX as it uses a "different" way of
getting in the kernel. This patch adds the necessary trampolines,
creating a flattened device-tree from the tree passed from MacOS, and
initializing the btext engine early for really-early debugging.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/arch/powerpc/platforms/powermac/Makefile b/arch/powerpc/platforms/powermac/Makefile
index 3e5370eeb1b7..faa1a2c82bcf 100644
--- a/arch/powerpc/platforms/powermac/Makefile
+++ b/arch/powerpc/platforms/powermac/Makefile
@@ -1,3 +1,5 @@
+CFLAGS_bootx_init.o             += -fPIC
+
 obj-y                           += pic.o setup.o time.o feature.o pci.o \
                                    sleep.o low_i2c.o cache.o
 obj-$(CONFIG_PMAC_BACKLIGHT)    += backlight.o
@@ -6,5 +8,6 @@ obj-$(CONFIG_CPU_FREQ_PMAC64)	+= cpufreq_64.o
 obj-$(CONFIG_NVRAM)             += nvram.o
 # ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
 obj-$(CONFIG_PPC64)             += nvram.o
+obj-$(CONFIG_PPC32)             += bootx_init.o
 obj-$(CONFIG_SMP)               += smp.o
 obj-$(CONFIG_PPC_MERGE)         += udbg_scc.o udbg_adb.o