diff options
Diffstat (limited to 'arch/powerpc/mm/fsl_booke_mmu.c')
| -rw-r--r-- | arch/powerpc/mm/fsl_booke_mmu.c | 22 |
1 files changed, 15 insertions, 7 deletions
diff --git a/arch/powerpc/mm/fsl_booke_mmu.c b/arch/powerpc/mm/fsl_booke_mmu.c index bb1f88c10377..f3afe3d97f6b 100644 --- a/arch/powerpc/mm/fsl_booke_mmu.c +++ b/arch/powerpc/mm/fsl_booke_mmu.c @@ -169,7 +169,8 @@ unsigned long calc_cam_sz(unsigned long ram, unsigned long virt, } static unsigned long map_mem_in_cams_addr(phys_addr_t phys, unsigned long virt, - unsigned long ram, int max_cam_idx) + unsigned long ram, int max_cam_idx, + bool dryrun) { int i; unsigned long amount_mapped = 0; @@ -179,7 +180,9 @@ static unsigned long map_mem_in_cams_addr(phys_addr_t phys, unsigned long virt, unsigned long cam_sz; cam_sz = calc_cam_sz(ram, virt, phys); - settlbcam(i, virt, phys, cam_sz, pgprot_val(PAGE_KERNEL_X), 0); + if (!dryrun) + settlbcam(i, virt, phys, cam_sz, + pgprot_val(PAGE_KERNEL_X), 0); ram -= cam_sz; amount_mapped += cam_sz; @@ -187,6 +190,9 @@ static unsigned long map_mem_in_cams_addr(phys_addr_t phys, unsigned long virt, phys += cam_sz; } + if (dryrun) + return amount_mapped; + loadcam_multi(0, i, max_cam_idx); tlbcam_index = i; @@ -199,12 +205,12 @@ static unsigned long map_mem_in_cams_addr(phys_addr_t phys, unsigned long virt, return amount_mapped; } -unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx) +unsigned long map_mem_in_cams(unsigned long ram, int max_cam_idx, bool dryrun) { unsigned long virt = PAGE_OFFSET; phys_addr_t phys = memstart_addr; - return map_mem_in_cams_addr(phys, virt, ram, max_cam_idx); + return map_mem_in_cams_addr(phys, virt, ram, max_cam_idx, dryrun); } #ifdef CONFIG_PPC32 @@ -235,7 +241,7 @@ void __init adjust_total_lowmem(void) ram = min((phys_addr_t)__max_low_memory, (phys_addr_t)total_lowmem); i = switch_to_as1(); - __max_low_memory = map_mem_in_cams(ram, CONFIG_LOWMEM_CAM_NUM); + __max_low_memory = map_mem_in_cams(ram, CONFIG_LOWMEM_CAM_NUM, false); restore_to_as0(i, 0, 0, 1); pr_info("Memory CAM mapping: "); @@ -303,10 +309,12 @@ notrace void __init relocate_init(u64 dt_ptr, phys_addr_t start) n = switch_to_as1(); /* map a 64M area for the second relocation */ if (memstart_addr > start) - map_mem_in_cams(0x4000000, CONFIG_LOWMEM_CAM_NUM); + map_mem_in_cams(0x4000000, CONFIG_LOWMEM_CAM_NUM, + false); else map_mem_in_cams_addr(start, PAGE_OFFSET + offset, - 0x4000000, CONFIG_LOWMEM_CAM_NUM); + 0x4000000, CONFIG_LOWMEM_CAM_NUM, + false); restore_to_as0(n, offset, __va(dt_ptr), 1); /* We should never reach here */ panic("Relocation error"); |