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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2016-02-09 17:07:54 +0100 |
|---|---|---|
| committer | Scott Wood <oss@buserror.net> | 2016-03-12 00:18:01 +0100 |
| commit | 516d91893b548d7868adb9e0173a7ca307dc9c17 (patch) | |
| tree | 625e64ab92a3e78c7c63ce216eeb687998088338 /arch/powerpc/mm/8xx_mmu.c | |
| parent | powerpc: Update documentation for noltlbs kernel parameter (diff) | |
| download | linux-516d91893b548d7868adb9e0173a7ca307dc9c17.tar.xz linux-516d91893b548d7868adb9e0173a7ca307dc9c17.zip | |
powerpc/8xx: move setup_initial_memory_limit() into 8xx_mmu.c
Now we have a 8xx specific .c file for that so put it in there
as other powerpc variants do
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <oss@buserror.net>
Diffstat (limited to 'arch/powerpc/mm/8xx_mmu.c')
| -rw-r--r-- | arch/powerpc/mm/8xx_mmu.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/powerpc/mm/8xx_mmu.c b/arch/powerpc/mm/8xx_mmu.c index 2d42745f6cff..a84f5ebed1c1 100644 --- a/arch/powerpc/mm/8xx_mmu.c +++ b/arch/powerpc/mm/8xx_mmu.c @@ -81,3 +81,20 @@ unsigned long __init mmu_mapin_ram(unsigned long top) return mapped; } + +void setup_initial_memory_limit(phys_addr_t first_memblock_base, + phys_addr_t first_memblock_size) +{ + /* We don't currently support the first MEMBLOCK not mapping 0 + * physical on those processors + */ + BUG_ON(first_memblock_base != 0); + +#ifdef CONFIG_PIN_TLB + /* 8xx can only access 24MB at the moment */ + memblock_set_current_limit(min_t(u64, first_memblock_size, 0x01800000)); +#else + /* 8xx can only access 8MB at the moment */ + memblock_set_current_limit(min_t(u64, first_memblock_size, 0x00800000)); +#endif +} |