diff options
| author | Ingo Molnar <mingo@kernel.org> | 2013-06-19 12:55:31 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-06-19 12:55:31 +0200 |
| commit | d81344c50824a4d28a9397e97135d60075ac37ff (patch) | |
| tree | d25c443fb4a764cd788db857c49dd3d3f8f722d3 /arch/mips/kernel/setup.c | |
| parent | 0de358f1c2642710d41190b73fbc295e675c4ab8 (diff) | |
| parent | 29bb9e5a75684106a37593ad75ec75ff8312731b (diff) | |
Merge branch 'sched/urgent' into sched/core
Merge in fixes before applying ongoing new work.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/mips/kernel/setup.c')
| -rw-r--r-- | arch/mips/kernel/setup.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/mips/kernel/setup.c b/arch/mips/kernel/setup.c index 4c774d5d5087..c7f90519e58c 100644 --- a/arch/mips/kernel/setup.c +++ b/arch/mips/kernel/setup.c @@ -23,6 +23,7 @@ #include <linux/pfn.h> #include <linux/debugfs.h> #include <linux/kexec.h> +#include <linux/sizes.h> #include <asm/addrspace.h> #include <asm/bootinfo.h> @@ -77,6 +78,8 @@ EXPORT_SYMBOL(mips_io_port_base); static struct resource code_resource = { .name = "Kernel code", }; static struct resource data_resource = { .name = "Kernel data", }; +static void *detect_magic __initdata = detect_memory_region; + void __init add_memory_region(phys_t start, phys_t size, long type) { int x = boot_mem_map.nr_map; @@ -122,6 +125,25 @@ void __init add_memory_region(phys_t start, phys_t size, long type) boot_mem_map.nr_map++; } +void __init detect_memory_region(phys_t start, phys_t sz_min, phys_t sz_max) +{ + void *dm = &detect_magic; + phys_t size; + + for (size = sz_min; size < sz_max; size <<= 1) { + if (!memcmp(dm, dm + size, sizeof(detect_magic))) + break; + } + + pr_debug("Memory: %lluMB of RAM detected at 0x%llx (min: %lluMB, max: %lluMB)\n", + ((unsigned long long) size) / SZ_1M, + (unsigned long long) start, + ((unsigned long long) sz_min) / SZ_1M, + ((unsigned long long) sz_max) / SZ_1M); + + add_memory_region(start, size, BOOT_MEM_RAM); +} + static void __init print_memory_map(void) { int i; |