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| author |   Anup Patel <anup.patel@wdc.com> | 2019-02-13 16:38:36 +0530 |
|---|---|---|
| committer |   Anup Patel <anup@brainfault.org> | 2019-02-21 11:26:31 +0530 |
| commit | 6f1e9e946f0bc32cf55a7d7c36f80cb365e1877a (patch) | |
| tree | 39204f33014cf0c840794ca1ca774dfd7262b218 /arch/riscv/kernel | |
| parent | RISC-V: Move setup_bootmem() to mm/init.c (diff) | |
| download | linux-dev-6f1e9e946f0bc32cf55a7d7c36f80cb365e1877a.tar.xz linux-dev-6f1e9e946f0bc32cf55a7d7c36f80cb365e1877a.zip | |
RISC-V: Move setup_vm() to mm/init.c
The setup_vm() is responsible for setting up initial page table hence
should be placed in mm/init.c.
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/kernel')
| -rw-r--r-- | arch/riscv/kernel/setup.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 49bce6692f39..cffe0b3caba4 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -69,55 +69,6 @@ void __init smp_setup_processor_id(void) cpuid_to_hartid_map(0) = boot_cpu_hartid; } -pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss; -pgd_t trampoline_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE); - -#ifndef __PAGETABLE_PMD_FOLDED -#define NUM_SWAPPER_PMDS ((uintptr_t)-PAGE_OFFSET >> PGDIR_SHIFT) -pmd_t swapper_pmd[PTRS_PER_PMD*((-PAGE_OFFSET)/PGDIR_SIZE)] __page_aligned_bss; -pmd_t trampoline_pmd[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE); -#endif - -asmlinkage void __init setup_vm(void) -{ - extern char _start; - uintptr_t i; - uintptr_t pa = (uintptr_t) &_start; - pgprot_t prot = __pgprot(pgprot_val(PAGE_KERNEL) | _PAGE_EXEC); - - va_pa_offset = PAGE_OFFSET - pa; - pfn_base = PFN_DOWN(pa); - - /* Sanity check alignment and size */ - BUG_ON((PAGE_OFFSET % PGDIR_SIZE) != 0); - BUG_ON((pa % (PAGE_SIZE * PTRS_PER_PTE)) != 0); - -#ifndef __PAGETABLE_PMD_FOLDED - trampoline_pg_dir[(PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD] = - pfn_pgd(PFN_DOWN((uintptr_t)trampoline_pmd), - __pgprot(_PAGE_TABLE)); - trampoline_pmd[0] = pfn_pmd(PFN_DOWN(pa), prot); - - for (i = 0; i < (-PAGE_OFFSET)/PGDIR_SIZE; ++i) { - size_t o = (PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD + i; - swapper_pg_dir[o] = - pfn_pgd(PFN_DOWN((uintptr_t)swapper_pmd) + i, - __pgprot(_PAGE_TABLE)); - } - for (i = 0; i < ARRAY_SIZE(swapper_pmd); i++) - swapper_pmd[i] = pfn_pmd(PFN_DOWN(pa + i * PMD_SIZE), prot); -#else - trampoline_pg_dir[(PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD] = - pfn_pgd(PFN_DOWN(pa), prot); - - for (i = 0; i < (-PAGE_OFFSET)/PGDIR_SIZE; ++i) { - size_t o = (PAGE_OFFSET >> PGDIR_SHIFT) % PTRS_PER_PGD + i; - swapper_pg_dir[o] = - pfn_pgd(PFN_DOWN(pa + i * PGDIR_SIZE), prot); - } -#endif -} - void __init parse_dtb(unsigned int hartid, void *dtb) { if (!early_init_dt_scan(__va(dtb))) |