From 99c62dd773797b68f3b1ca6bb3274725d1852fa2 Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Wed, 16 Apr 2008 05:52:21 +1000 Subject: [POWERPC] Remove and replace uses of PPC_MEMSTART with memstart_addr A number of users of PPC_MEMSTART (40x, ppc_mmu_32) can just always use 0 as we don't support booting these kernels at non-zero physical addresses since their exception vectors must be at 0 (or 0xfffx_xxxx). For the sub-arches that support relocatable interrupt vectors (book-e), it's reasonable to have memory start at a non-zero physical address. For those cases use the variable memstart_addr instead of the #define PPC_MEMSTART since the only uses of PPC_MEMSTART are for initialization and in the future we can set memstart_addr at runtime to have a relocatable kernel. Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras --- arch/powerpc/mm/init_32.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'arch/powerpc/mm/init_32.c') diff --git a/arch/powerpc/mm/init_32.c b/arch/powerpc/mm/init_32.c index 0c66a9fe63f5..1d7e5b8ade6a 100644 --- a/arch/powerpc/mm/init_32.c +++ b/arch/powerpc/mm/init_32.c @@ -59,8 +59,8 @@ DEFINE_PER_CPU(struct mmu_gather, mmu_gathers); unsigned long total_memory; unsigned long total_lowmem; -unsigned long ppc_memstart; -unsigned long ppc_memoffset = PAGE_OFFSET; +phys_addr_t memstart_addr; +phys_addr_t lowmem_end_addr; int boot_mapsize; #ifdef CONFIG_PPC_PMAC @@ -145,8 +145,7 @@ void __init MMU_init(void) printk(KERN_WARNING "Only using first contiguous memory region"); } - total_memory = lmb_end_of_DRAM(); - total_lowmem = total_memory; + total_lowmem = total_memory = lmb_end_of_DRAM() - memstart_addr; #ifdef CONFIG_FSL_BOOKE /* Freescale Book-E parts expect lowmem to be mapped by fixed TLB -- cgit v1.2.2