[PATCH v5 04/16] powerpc/mm/32s: use generic mmu_mapin_ram() for all blocks.

Christophe Leroy
2019-02-21T19:09:52Z

Now that mmu_mapin_ram() is able to handle other blocks
than the one starting at 0, the WII can use it for all
its blocks.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
---
arch/powerpc/mm/pgtable_32.c | 27 +++++++++------------------
1 file changed, 9 insertions(+), 18 deletions(-)

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index b4858818523f..c4b0eb51f6d8 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -254,26 +254,17 @@ static void __init __mapin_ram_chunk(unsigned long offset, unsigned long top)

void __init mapin_ram(void)
{
- unsigned long s, top;
-
-#ifndef CONFIG_WII
- top = total_lowmem;
- s = mmu_mapin_ram(0, top);
- __mapin_ram_chunk(s, top);
-#else
- if (!wii_hole_size) {
- s = mmu_mapin_ram(0, total_lowmem);
- __mapin_ram_chunk(s, total_lowmem);
- } else {
- top = wii_hole_start;
- s = mmu_mapin_ram(0, top);
- __mapin_ram_chunk(s, top);
+ struct memblock_region *reg;
+
+ for_each_memblock(memory, reg) {
+ phys_addr_t base = reg->base;
+ phys_addr_t top = min(base + reg->size, total_lowmem);

- top = memblock_end_of_DRAM();
- s = wii_mmu_mapin_mem2(top);
- __mapin_ram_chunk(s, top);
+ if (base >= top)
+ continue;
+ base = mmu_mapin_ram(base, top);
+ __mapin_ram_chunk(base, top);
}
-#endif
}

/* Scan the real Linux page tables and return a PTE pointer for
--
2.13.3