Messages in this thread Patch in this message | | | From | Anup Patel <> | Subject | [PATCH v4 3/6] RISC-V: Move setup_bootmem() to mm/init.c | Date | Wed, 13 Feb 2019 06:32:11 +0000 |
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The setup_bootmem() mainly populates memblocks and does early memory reservations. The right location for this function is 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> --- arch/riscv/include/asm/pgtable.h | 1 + arch/riscv/kernel/setup.c | 48 ++++---------------------------- arch/riscv/mm/init.c | 40 ++++++++++++++++++++++++++ 3 files changed, 46 insertions(+), 43 deletions(-)
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 16301966d65b..35893810cba3 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -404,6 +404,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma, #define kern_addr_valid(addr) (1) /* FIXME */ #endif +extern void setup_bootmem(void); extern void paging_init(void); static inline void pgtable_cache_init(void) diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c index 9e6395b7d409..ab29a66a17fc 100644 --- a/arch/riscv/kernel/setup.c +++ b/arch/riscv/kernel/setup.c @@ -163,49 +163,6 @@ void __init parse_dtb(unsigned int hartid, void *dtb) #endif } -static void __init setup_bootmem(void) -{ - struct memblock_region *reg; - phys_addr_t mem_size = 0; - - /* Find the memory region containing the kernel */ - for_each_memblock(memory, reg) { - phys_addr_t vmlinux_end = __pa(_end); - phys_addr_t end = reg->base + reg->size; - - if (reg->base <= vmlinux_end && vmlinux_end <= end) { - /* - * Reserve from the start of the region to the end of - * the kernel - */ - memblock_reserve(reg->base, vmlinux_end - reg->base); - mem_size = min(reg->size, (phys_addr_t)-PAGE_OFFSET); - } - } - BUG_ON(mem_size == 0); - - set_max_mapnr(PFN_DOWN(mem_size)); - max_low_pfn = PFN_DOWN(memblock_end_of_DRAM()); - -#ifdef CONFIG_BLK_DEV_INITRD - setup_initrd(); -#endif /* CONFIG_BLK_DEV_INITRD */ - - early_init_fdt_reserve_self(); - early_init_fdt_scan_reserved_mem(); - memblock_allow_resize(); - memblock_dump_all(); - - for_each_memblock(memory, reg) { - unsigned long start_pfn = memblock_region_memory_base_pfn(reg); - unsigned long end_pfn = memblock_region_memory_end_pfn(reg); - - memblock_set_node(PFN_PHYS(start_pfn), - PFN_PHYS(end_pfn - start_pfn), - &memblock.memory, 0); - } -} - void __init setup_arch(char **cmdline_p) { init_mm.start_code = (unsigned long) _stext; @@ -218,6 +175,11 @@ void __init setup_arch(char **cmdline_p) parse_early_param(); setup_bootmem(); + +#ifdef CONFIG_BLK_DEV_INITRD + setup_initrd(); +#endif /* CONFIG_BLK_DEV_INITRD */ + paging_init(); unflatten_device_tree(); diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c index 504a5e491f5a..a57dba8ac9e7 100644 --- a/arch/riscv/mm/init.c +++ b/arch/riscv/mm/init.c @@ -16,6 +16,7 @@ #include <linux/memblock.h> #include <linux/swap.h> #include <linux/sizes.h> +#include <linux/of_fdt.h> #include <asm/tlbflush.h> #include <asm/sections.h> @@ -63,3 +64,42 @@ void free_initmem(void) { free_initmem_default(0); } + +void __init setup_bootmem(void) +{ + struct memblock_region *reg; + phys_addr_t mem_size = 0; + + /* Find the memory region containing the kernel */ + for_each_memblock(memory, reg) { + phys_addr_t vmlinux_end = __pa(_end); + phys_addr_t end = reg->base + reg->size; + + if (reg->base <= vmlinux_end && vmlinux_end <= end) { + /* + * Reserve from the start of the region to the end of + * the kernel + */ + memblock_reserve(reg->base, vmlinux_end - reg->base); + mem_size = min(reg->size, (phys_addr_t)-PAGE_OFFSET); + } + } + BUG_ON(mem_size == 0); + + set_max_mapnr(PFN_DOWN(mem_size)); + max_low_pfn = memblock_end_of_DRAM(); + + early_init_fdt_reserve_self(); + early_init_fdt_scan_reserved_mem(); + memblock_allow_resize(); + memblock_dump_all(); + + for_each_memblock(memory, reg) { + unsigned long start_pfn = memblock_region_memory_base_pfn(reg); + unsigned long end_pfn = memblock_region_memory_end_pfn(reg); + + memblock_set_node(PFN_PHYS(start_pfn), + PFN_PHYS(end_pfn - start_pfn), + &memblock.memory, 0); + } +} -- 2.17.1
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