x86: move definitions to processor.h

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / x86 / kernel / setup_64.c

diff --git a/arch/x86/kernel/setup_64.c b/arch/x86/kernel/setup_64.c
index f2b131ef844e085cb8ff1a97f71b7a374948395f..02409100f45606845805b316293b4e6d59dcb2bd 100644 (file)
--- a/arch/x86/kernel/setup_64.c
+++ b/arch/x86/kernel/setup_64.c
@@ -30,6 +30,7 @@
 #include <linux/crash_dump.h>
 #include <linux/root_dev.h>
 #include <linux/pci.h>
+#include <linux/efi.h>
 #include <linux/acpi.h>
 #include <linux/kallsyms.h>
 #include <linux/edd.h>
@@ -39,6 +40,7 @@
 #include <linux/dmi.h>
 #include <linux/dma-mapping.h>
 #include <linux/ctype.h>
+#include <linux/uaccess.h>
 
 #include <asm/mtrr.h>
 #include <asm/uaccess.h>
@@ -62,6 +64,12 @@
 #include <asm/mce.h>
 #include <asm/ds.h>
 
+#ifdef CONFIG_PARAVIRT
+#include <asm/paravirt.h>
+#else
+#define ARCH_SETUP
+#endif
+
 /*
  * Machine setup..
  */
@@ -246,6 +254,16 @@ static void discover_ebda(void)
         * 4K EBDA area at 0x40E
         */
        ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER);
+       /*
+        * There can be some situations, like paravirtualized guests,
+        * in which there is no available ebda information. In such
+        * case, just skip it
+        */
+       if (!ebda_addr) {
+               ebda_size = 0;
+               return;
+       }
+
        ebda_addr <<= 4;
 
        ebda_size = *(unsigned short *)__va(ebda_addr);
@@ -259,6 +277,12 @@ static void discover_ebda(void)
                ebda_size = 64*1024;
 }
 
+/* Overridden in paravirt.c if CONFIG_PARAVIRT */
+void __attribute__((weak)) memory_setup(void)
+{
+       machine_specific_memory_setup();
+}
+
 void __init setup_arch(char **cmdline_p)
 {
        unsigned i;
@@ -276,7 +300,15 @@ void __init setup_arch(char **cmdline_p)
        rd_prompt = ((boot_params.hdr.ram_size & RAMDISK_PROMPT_FLAG) != 0);
        rd_doload = ((boot_params.hdr.ram_size & RAMDISK_LOAD_FLAG) != 0);
 #endif
-       setup_memory_region();
+#ifdef CONFIG_EFI
+       if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
+                    "EL64", 4))
+               efi_enabled = 1;
+#endif
+
+       ARCH_SETUP
+
+       memory_setup();
        copy_edd();
 
        if (!boot_params.hdr.root_flags)
@@ -315,6 +347,8 @@ void __init setup_arch(char **cmdline_p)
        discover_ebda();
 
        init_memory_mapping(0, (end_pfn_map << PAGE_SHIFT));
+       if (efi_enabled)
+               efi_init();
 
        dmi_scan_machine();
 
@@ -388,6 +422,12 @@ void __init setup_arch(char **cmdline_p)
         */
        acpi_reserve_bootmem();
 #endif
+
+       if (efi_enabled) {
+               efi_map_memmap();
+               efi_reserve_bootmem();
+       }
+
        /*
        * Find and reserve possible boot-time SMP configuration:
        */
@@ -453,7 +493,8 @@ void __init setup_arch(char **cmdline_p)
 
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)
-       conswitchp = &vga_con;
+       if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
+               conswitchp = &vga_con;
 #elif defined(CONFIG_DUMMY_CONSOLE)
        conswitchp = &dummy_con;
 #endif
@@ -716,7 +757,7 @@ static void __cpuinit init_amd(struct cpuinfo_x86 *c)
                disable_apic_timer = 1;
 }
 
-static void __cpuinit detect_ht(struct cpuinfo_x86 *c)
+void __cpuinit detect_ht(struct cpuinfo_x86 *c)
 {
 #ifdef CONFIG_SMP
        u32 eax, ebx, ecx, edx;