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authorAnup Patel <anup.patel@wdc.com>2019-02-21 11:25:49 +0530
committerAnup Patel <anup@brainfault.org>2019-02-21 11:25:49 +0530
commit0651c263c8e39f409a72ba01bfd73ddf3d3e6748 (patch)
tree6fd8e3a02a4dfa7ef04f97cdd0a79966befc8153 /arch/riscv
parentRISC-V: Setup init_mm before parse_early_param() (diff)
downloadlinux-dev-0651c263c8e39f409a72ba01bfd73ddf3d3e6748.tar.xz
linux-dev-0651c263c8e39f409a72ba01bfd73ddf3d3e6748.zip
RISC-V: Move setup_bootmem() to mm/init.c
The setup_bootmem() mainly populates memblocks and does early memory reservations. The right location for this function is mm/init.c. It calls setup_initrd() so we move that as well. Signed-off-by: Anup Patel <anup.patel@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Diffstat (limited to 'arch/riscv')
-rw-r--r--arch/riscv/include/asm/pgtable.h1
-rw-r--r--arch/riscv/kernel/setup.c72
-rw-r--r--arch/riscv/mm/init.c70
3 files changed, 71 insertions, 72 deletions
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index a8179a8c1491..1141364d990e 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 6a8a89740b7c..49bce6692f39 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -23,7 +23,6 @@
#include <linux/mm.h>
#include <linux/memblock.h>
#include <linux/sched.h>
-#include <linux/initrd.h>
#include <linux/console.h>
#include <linux/screen_info.h>
#include <linux/of_fdt.h>
@@ -70,34 +69,6 @@ void __init smp_setup_processor_id(void)
cpuid_to_hartid_map(0) = boot_cpu_hartid;
}
-#ifdef CONFIG_BLK_DEV_INITRD
-static void __init setup_initrd(void)
-{
- unsigned long size;
-
- if (initrd_start >= initrd_end) {
- pr_info("initrd not found or empty");
- goto disable;
- }
- if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
- pr_err("initrd extends beyond end of memory");
- goto disable;
- }
-
- size = initrd_end - initrd_start;
- memblock_reserve(__pa(initrd_start), size);
- initrd_below_start_ok = 1;
-
- pr_info("Initial ramdisk at: 0x%p (%lu bytes)\n",
- (void *)(initrd_start), size);
- return;
-disable:
- pr_cont(" - disabling initrd\n");
- initrd_start = 0;
- initrd_end = 0;
-}
-#endif /* CONFIG_BLK_DEV_INITRD */
-
pgd_t swapper_pg_dir[PTRS_PER_PGD] __page_aligned_bss;
pgd_t trampoline_pg_dir[PTRS_PER_PGD] __initdata __aligned(PAGE_SIZE);
@@ -159,49 +130,6 @@ 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;
diff --git a/arch/riscv/mm/init.c b/arch/riscv/mm/init.c
index 658ebf645f42..30af42d78e35 100644
--- a/arch/riscv/mm/init.c
+++ b/arch/riscv/mm/init.c
@@ -17,6 +17,7 @@
#include <linux/initrd.h>
#include <linux/swap.h>
#include <linux/sizes.h>
+#include <linux/of_fdt.h>
#include <asm/tlbflush.h>
#include <asm/sections.h>
@@ -66,7 +67,76 @@ void free_initmem(void)
}
#ifdef CONFIG_BLK_DEV_INITRD
+static void __init setup_initrd(void)
+{
+ unsigned long size;
+
+ if (initrd_start >= initrd_end) {
+ pr_info("initrd not found or empty");
+ goto disable;
+ }
+ if (__pa(initrd_end) > PFN_PHYS(max_low_pfn)) {
+ pr_err("initrd extends beyond end of memory");
+ goto disable;
+ }
+
+ size = initrd_end - initrd_start;
+ memblock_reserve(__pa(initrd_start), size);
+ initrd_below_start_ok = 1;
+
+ pr_info("Initial ramdisk at: 0x%p (%lu bytes)\n",
+ (void *)(initrd_start), size);
+ return;
+disable:
+ pr_cont(" - disabling initrd\n");
+ initrd_start = 0;
+ initrd_end = 0;
+}
+
void free_initrd_mem(unsigned long start, unsigned long end)
{
}
#endif /* CONFIG_BLK_DEV_INITRD */
+
+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);
+ }
+}