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Commit 3a5f8c5f authored by Stephen Rothwell's avatar Stephen Rothwell
Browse files

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: default avatarStephen Rothwell <sfr@canb.auug.org.au>
parent f255f0dd

arch/powerpc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -570,7 +570,7 @@ config SCHED_SMT 


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

arch/powerpc/mm/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -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

arch/powerpc/platforms/iseries/Makefile

+2 −0
Original line number Diff line number Diff line 
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

arch/powerpc/platforms/iseries/setup.c

+1 −5
Original line number Diff line number Diff line
@@ -430,7 +430,6 @@ static void __init build_iSeries_Memory_Map(void) 
	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 @@ static void __init build_iSeries_Memory_Map(void) 
	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,