x86: merge setup_memory_map with e820
... and kill e820_32/64.c and e820_32/64.h
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index dc3c636..bcc2b12 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -22,7 +22,7 @@
obj-$(CONFIG_X86_32) += sys_i386_32.o i386_ksyms_32.o
obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o
obj-$(CONFIG_X86_64) += syscall_64.o vsyscall_64.o setup64.o
-obj-y += bootflag.o e820_$(BITS).o e820.o
+obj-y += bootflag.o e820.o
obj-y += pci-dma.o quirks.o i8237.o topology.o kdebugfs.o
obj-y += alternative.o i8253.o pci-nommu.o
obj-$(CONFIG_X86_64) += bugs_64.o
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 432c491..49477484 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1029,4 +1029,76 @@
}
}
+char *__init __attribute__((weak)) machine_specific_memory_setup(void)
+{
+ char *who = "BIOS-e820";
+ int new_nr;
+ /*
+ * Try to copy the BIOS-supplied E820-map.
+ *
+ * Otherwise fake a memory map; one section from 0k->640k,
+ * the next section from 1mb->appropriate_mem_k
+ */
+ new_nr = boot_params.e820_entries;
+ sanitize_e820_map(boot_params.e820_map,
+ ARRAY_SIZE(boot_params.e820_map),
+ &new_nr);
+ boot_params.e820_entries = new_nr;
+ if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0) {
+#ifdef CONFIG_X86_64
+ early_panic("Cannot find a valid memory map");
+#else
+ unsigned long mem_size;
+ /* compare results from other methods and take the greater */
+ if (boot_params.alt_mem_k
+ < boot_params.screen_info.ext_mem_k) {
+ mem_size = boot_params.screen_info.ext_mem_k;
+ who = "BIOS-88";
+ } else {
+ mem_size = boot_params.alt_mem_k;
+ who = "BIOS-e801";
+ }
+
+ e820.nr_map = 0;
+ e820_add_region(0, LOWMEMSIZE(), E820_RAM);
+ e820_add_region(HIGH_MEMORY, mem_size << 10, E820_RAM);
+#endif
+ }
+
+ /* In case someone cares... */
+ return who;
+}
+
+/* Overridden in paravirt.c if CONFIG_PARAVIRT */
+char * __init __attribute__((weak)) memory_setup(void)
+{
+ return machine_specific_memory_setup();
+}
+
+void __init setup_memory_map(void)
+{
+ printk(KERN_INFO "BIOS-provided physical RAM map:\n");
+ e820_print_map(memory_setup());
+}
+
+#ifdef CONFIG_X86_64
+int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
+{
+ int i;
+
+ if (slot < 0 || slot >= e820.nr_map)
+ return -1;
+ for (i = slot; i < e820.nr_map; i++) {
+ if (e820.map[i].type != E820_RAM)
+ continue;
+ break;
+ }
+ if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT))
+ return -1;
+ *addr = e820.map[i].addr;
+ *size = min_t(u64, e820.map[i].size + e820.map[i].addr,
+ max_pfn << PAGE_SHIFT) - *addr;
+ return i + 1;
+}
+#endif
diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c
deleted file mode 100644
index 1205ccf..0000000
--- a/arch/x86/kernel/e820_32.c
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/kexec.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/pfn.h>
-#include <linux/uaccess.h>
-
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/e820.h>
-#include <asm/setup.h>
-
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-char * __init __attribute__((weak)) memory_setup(void)
-{
- return machine_specific_memory_setup();
-}
-
-void __init setup_memory_map(void)
-{
- printk(KERN_INFO "BIOS-provided physical RAM map:\n");
- e820_print_map(memory_setup());
-}
-
diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c
deleted file mode 100644
index cb03bff..0000000
--- a/arch/x86/kernel/e820_64.c
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * Handle the memory map.
- * The functions here do the job until bootmem takes over.
- *
- * Getting sanitize_e820_map() in sync with i386 version by applying change:
- * - Provisions for empty E820 memory regions (reported by certain BIOSes).
- * Alex Achenbach <xela@slit.de>, December 2002.
- * Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
- *
- */
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/bootmem.h>
-#include <linux/ioport.h>
-#include <linux/string.h>
-#include <linux/kexec.h>
-#include <linux/module.h>
-#include <linux/mm.h>
-#include <linux/pfn.h>
-#include <linux/pci.h>
-
-#include <asm/pgtable.h>
-#include <asm/page.h>
-#include <asm/e820.h>
-#include <asm/proto.h>
-#include <asm/setup.h>
-#include <asm/sections.h>
-#include <asm/kdebug.h>
-#include <asm/trampoline.h>
-
-/*
- * PFN of last memory page.
- */
-unsigned long end_pfn;
-
-/*
- * end_pfn only includes RAM, while max_pfn_mapped includes all e820 entries.
- * The direct mapping extends to max_pfn_mapped, so that we can directly access
- * apertures, ACPI and other tables without having to play with fixmaps.
- */
-unsigned long max_pfn_mapped;
-
-static void early_panic(char *msg)
-{
- early_printk(msg);
- panic(msg);
-}
-
-/* We're not void only for x86 32-bit compat */
-char *__init machine_specific_memory_setup(void)
-{
- char *who = "BIOS-e820";
- int new_nr;
- /*
- * Try to copy the BIOS-supplied E820-map.
- *
- * Otherwise fake a memory map; one section from 0k->640k,
- * the next section from 1mb->appropriate_mem_k
- */
- new_nr = boot_params.e820_entries;
- sanitize_e820_map(boot_params.e820_map,
- ARRAY_SIZE(boot_params.e820_map),
- &new_nr);
- boot_params.e820_entries = new_nr;
- if (copy_e820_map(boot_params.e820_map, boot_params.e820_entries) < 0)
- early_panic("Cannot find a valid memory map");
- printk(KERN_INFO "BIOS-provided physical RAM map:\n");
- e820_print_map(who);
-
- /* In case someone cares... */
- return who;
-}
-
-int __init arch_get_ram_range(int slot, u64 *addr, u64 *size)
-{
- int i;
-
- if (slot < 0 || slot >= e820.nr_map)
- return -1;
- for (i = slot; i < e820.nr_map; i++) {
- if (e820.map[i].type != E820_RAM)
- continue;
- break;
- }
- if (i == e820.nr_map || e820.map[i].addr > (max_pfn << PAGE_SHIFT))
- return -1;
- *addr = e820.map[i].addr;
- *size = min_t(u64, e820.map[i].size + e820.map[i].addr,
- max_pfn << PAGE_SHIFT) - *addr;
- return i + 1;
-}
diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index ec65696..3220c7b 100644
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -266,12 +266,6 @@
{}
#endif
-/* Overridden in paravirt.c if CONFIG_PARAVIRT */
-void __attribute__((weak)) __init memory_setup(void)
-{
- machine_specific_memory_setup();
-}
-
#ifdef CONFIG_PCI_MMCONFIG
extern void __cpuinit fam10h_check_enable_mmcfg(void);
extern void __init check_enable_amd_mmconf_dmi(void);
@@ -316,7 +310,7 @@
ARCH_SETUP
- memory_setup();
+ setup_memory_map();
copy_edd();
if (!boot_params.hdr.root_flags)
