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authorYinghai Lu <yhlu.kernel@gmail.com>2008-06-10 12:55:54 -0700
committerIngo Molnar <mingo@elte.hu>2008-07-08 10:35:38 +0200
commitab4a465e96adf2f3a8aaa95384bacfa9ab661e35 (patch)
treea4c72ba76c93ff362b404106f6a6ce756a2075cf /arch/x86/kernel/e820_32.c
parentdf5f6c212cc049d1989b5ce71bb863a367c261e9 (diff)
x86: e820 merge parsing of the mem=/memmap= boot parameters
since we now have 32-bit support for e820_register_active_regions(), we can merge the parsing of the mem=/memmap= boot parameters. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/e820_32.c')
-rw-r--r--arch/x86/kernel/e820_32.c120
1 files changed, 0 insertions, 120 deletions
diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c
index e8a3b968c9f..8de3df9548d 100644
--- a/arch/x86/kernel/e820_32.c
+++ b/arch/x86/kernel/e820_32.c
@@ -207,36 +207,6 @@ void __init init_iomem_resources(struct resource *code_resource,
}
}
-void __init limit_regions(unsigned long long size)
-{
- unsigned long long current_addr;
- int i;
-
- e820_print_map("limit_regions start");
- for (i = 0; i < e820.nr_map; i++) {
- current_addr = e820.map[i].addr + e820.map[i].size;
- if (current_addr < size)
- continue;
-
- if (e820.map[i].type != E820_RAM)
- continue;
-
- if (e820.map[i].addr >= size) {
- /*
- * This region starts past the end of the
- * requested size, skip it completely.
- */
- e820.nr_map = i;
- } else {
- e820.nr_map = i + 1;
- e820.map[i].size -= current_addr - size;
- }
- e820_print_map("limit_regions endfor");
- return;
- }
- e820_print_map("limit_regions endfunc");
-}
-
/* Overridden in paravirt.c if CONFIG_PARAVIRT */
char * __init __attribute__((weak)) memory_setup(void)
{
@@ -249,93 +219,3 @@ void __init setup_memory_map(void)
e820_print_map(memory_setup());
}
-static int __initdata user_defined_memmap;
-
-/*
- * "mem=nopentium" disables the 4MB page tables.
- * "mem=XXX[kKmM]" defines a memory region from HIGH_MEM
- * to <mem>, overriding the bios size.
- * "memmap=XXX[KkmM]@XXX[KkmM]" defines a memory region from
- * <start> to <start>+<mem>, overriding the bios size.
- *
- * HPA tells me bootloaders need to parse mem=, so no new
- * option should be mem= [also see Documentation/i386/boot.txt]
- */
-static int __init parse_mem(char *arg)
-{
- if (!arg)
- return -EINVAL;
-
- if (strcmp(arg, "nopentium") == 0) {
- setup_clear_cpu_cap(X86_FEATURE_PSE);
- } else {
- /* If the user specifies memory size, we
- * limit the BIOS-provided memory map to
- * that size. exactmap can be used to specify
- * the exact map. mem=number can be used to
- * trim the existing memory map.
- */
- unsigned long long mem_size;
-
- mem_size = memparse(arg, &arg);
- limit_regions(mem_size);
- user_defined_memmap = 1;
- }
- return 0;
-}
-early_param("mem", parse_mem);
-
-static int __init parse_memmap(char *arg)
-{
- if (!arg)
- return -EINVAL;
-
- if (strcmp(arg, "exactmap") == 0) {
-#ifdef CONFIG_CRASH_DUMP
- /* If we are doing a crash dump, we
- * still need to know the real mem
- * size before original memory map is
- * reset.
- */
- e820_register_active_regions(0, 0, -1UL);
- saved_max_pfn = e820_end_of_ram();
- remove_all_active_ranges();
-#endif
- e820.nr_map = 0;
- user_defined_memmap = 1;
- } else {
- /* If the user specifies memory size, we
- * limit the BIOS-provided memory map to
- * that size. exactmap can be used to specify
- * the exact map. mem=number can be used to
- * trim the existing memory map.
- */
- unsigned long long start_at, mem_size;
-
- mem_size = memparse(arg, &arg);
- if (*arg == '@') {
- start_at = memparse(arg+1, &arg);
- add_memory_region(start_at, mem_size, E820_RAM);
- } else if (*arg == '#') {
- start_at = memparse(arg+1, &arg);
- add_memory_region(start_at, mem_size, E820_ACPI);
- } else if (*arg == '$') {
- start_at = memparse(arg+1, &arg);
- add_memory_region(start_at, mem_size, E820_RESERVED);
- } else {
- limit_regions(mem_size);
- user_defined_memmap = 1;
- }
- }
- return 0;
-}
-early_param("memmap", parse_memmap);
-
-void __init finish_e820_parsing(void)
-{
- if (user_defined_memmap) {
- printk(KERN_INFO "user-defined physical RAM map:\n");
- e820_print_map("user");
- }
-}
-