powerpc: make iSeries boot again
On ARCH=ppc64 we were getting htab_hash_mask recalculated
to the correct value for our particular machine by accident.
In the merge tree, that code was commented out, so htab_hash_mask
was being corrupted.
We now set ppc64_pft_size instead which gets htab_has_mask
calculated correctly for us later. We should put an
ibm,pft-size property in the device tree at some point.
Also set -mno-minimal-toc in some makefiles.
Allow iSeries to configure PROC_DEVICETREE.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 330376b..cd55c9b 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -570,7 +570,7 @@
config PROC_DEVICETREE
bool "Support for Open Firmware device tree in /proc"
- depends on PPC_OF && PROC_FS
+ depends on (PPC_OF || PPC_ISERIES) && PROC_FS
help
This option adds a device-tree directory under /proc which contains
an image of the device tree that the kernel copies from Open
diff --git a/arch/powerpc/mm/Makefile b/arch/powerpc/mm/Makefile
index 612bc4e..14b2ffb 100644
--- a/arch/powerpc/mm/Makefile
+++ b/arch/powerpc/mm/Makefile
@@ -2,6 +2,10 @@
# Makefile for the linux ppc-specific parts of the memory manager.
#
+ifeq ($(CONFIG_PPC64),y)
+EXTRA_CFLAGS += -mno-minimal-toc
+endif
+
obj-y := fault.o mem.o lmb.o
obj-$(CONFIG_PPC32) += init_32.o pgtable_32.o mmu_context_32.o \
tlb_32.o
diff --git a/arch/powerpc/platforms/iseries/Makefile b/arch/powerpc/platforms/iseries/Makefile
index 18bf400..127b465 100644
--- a/arch/powerpc/platforms/iseries/Makefile
+++ b/arch/powerpc/platforms/iseries/Makefile
@@ -1,3 +1,5 @@
+EXTRA_CFLAGS += -mno-minimal-toc
+
obj-y += hvlog.o hvlpconfig.o lpardata.o setup.o mf.o lpevents.o \
hvcall.o proc.o htab.o iommu.o misc.o
obj-$(CONFIG_PCI) += pci.o irq.o vpdinfo.o
diff --git a/arch/powerpc/platforms/iseries/setup.c b/arch/powerpc/platforms/iseries/setup.c
index c3e532b..b6cf050 100644
--- a/arch/powerpc/platforms/iseries/setup.c
+++ b/arch/powerpc/platforms/iseries/setup.c
@@ -430,7 +430,6 @@
u32 loadAreaFirstChunk, loadAreaLastChunk, loadAreaSize;
u32 nextPhysChunk;
u32 hptFirstChunk, hptLastChunk, hptSizeChunks, hptSizePages;
- u32 num_ptegs;
u32 totalChunks,moreChunks;
u32 currChunk, thisChunk, absChunk;
u32 currDword;
@@ -493,10 +492,7 @@
printk("HPT absolute addr = %016lx, size = %dK\n",
chunk_to_addr(hptFirstChunk), hptSizeChunks * 256);
- /* Fill in the hashed page table hash mask */
- num_ptegs = hptSizePages *
- (PAGE_SIZE / (sizeof(hpte_t) * HPTES_PER_GROUP));
- htab_hash_mask = num_ptegs - 1;
+ ppc64_pft_size = __ilog2(hptSizePages * PAGE_SIZE);
/*
* The actual hashed page table is in the hypervisor,