X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Fhead64.c;h=388e05a5fc17ec05dc68fc881c169608390538b5;hb=684f2888847b896faafed87ce4733501d2cc283c;hp=38f32e798a99913ff2b1995159e771559e990164;hpb=b4e0409a36f4533770a12095bde2a574a08a319e;p=safe%2Fjmp%2Flinux-2.6

diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index 38f32e7..388e05a 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -11,6 +11,7 @@
 #include <linux/string.h>
 #include <linux/percpu.h>
 #include <linux/start_kernel.h>
+#include <linux/io.h>
 
 #include <asm/processor.h>
 #include <asm/proto.h>
@@ -22,6 +23,29 @@
 #include <asm/sections.h>
 #include <asm/kdebug.h>
 #include <asm/e820.h>
+#include <asm/bios_ebda.h>
+#include <asm/trampoline.h>
+
+/* boot cpu pda */
+static struct x8664_pda _boot_cpu_pda __read_mostly;
+
+#ifdef CONFIG_SMP
+/*
+ * We install an empty cpu_pda pointer table to indicate to early users
+ * (numa_set_node) that the cpu_pda pointer table for cpus other than
+ * the boot cpu is not yet setup.
+ */
+static struct x8664_pda *__cpu_pda[NR_CPUS] __initdata;
+#else
+static struct x8664_pda *__cpu_pda[NR_CPUS] __read_mostly;
+#endif
+
+void __init x86_64_init_pda(void)
+{
+	_cpu_pda = __cpu_pda;
+	cpu_pda(0) = &_boot_cpu_pda;
+	pda_init(0);
+}
 
 static void __init zap_identity_mappings(void)
 {
@@ -49,35 +73,6 @@ static void __init copy_bootdata(char *real_mode_data)
 	}
 }
 
-#define EBDA_ADDR_POINTER 0x40E
-
-static __init void reserve_ebda(void)
-{
-	unsigned ebda_addr, ebda_size;
-
-	/*
-	 * there is a real-mode segmented pointer pointing to the
-	 * 4K EBDA area at 0x40E
-	 */
-	ebda_addr = *(unsigned short *)__va(EBDA_ADDR_POINTER);
-	ebda_addr <<= 4;
-
-	if (!ebda_addr)
-		return;
-
-	ebda_size = *(unsigned short *)__va(ebda_addr);
-
-	/* Round EBDA up to pages */
-	if (ebda_size == 0)
-		ebda_size = 1;
-	ebda_size <<= 10;
-	ebda_size = round_up(ebda_size + (ebda_addr & ~PAGE_MASK), PAGE_SIZE);
-	if (ebda_size > 64*1024)
-		ebda_size = 64*1024;
-
-	reserve_early(ebda_addr, ebda_addr + ebda_size, "EBDA");
-}
-
 void __init x86_64_start_kernel(char * real_mode_data)
 {
 	int i;
@@ -94,6 +89,7 @@ void __init x86_64_start_kernel(char * real_mode_data)
 	BUILD_BUG_ON(!(MODULES_VADDR > __START_KERNEL));
 	BUILD_BUG_ON(!(((MODULES_END - 1) & PGDIR_MASK) ==
 				(__START_KERNEL & PGDIR_MASK)));
+	BUILD_BUG_ON(__fix_to_virt(__end_of_fixed_addresses) <= MODULES_END);
 
 	/* clear bss before set_intr_gate with early_idt_handler */
 	clear_bss();
@@ -104,7 +100,7 @@ void __init x86_64_start_kernel(char * real_mode_data)
 	/* Cleanup the over mapped high alias */
 	cleanup_highmap();
 
-	for (i = 0; i < IDT_ENTRIES; i++) {
+	for (i = 0; i < NUM_EXCEPTION_VECTORS; i++) {
 #ifdef CONFIG_EARLY_PRINTK
 		set_intr_gate(i, &early_idt_handlers[i]);
 #else
@@ -113,16 +109,23 @@ void __init x86_64_start_kernel(char * real_mode_data)
 	}
 	load_idt((const struct desc_ptr *)&idt_descr);
 
-	early_printk("Kernel alive\n");
+	if (console_loglevel == 10)
+		early_printk("Kernel alive\n");
 
- 	for (i = 0; i < NR_CPUS; i++)
- 		cpu_pda(i) = &boot_cpu_pda[i];
+	x86_64_init_pda();
 
-	pda_init(0);
+	x86_64_start_reservations(real_mode_data);
+}
+
+void __init x86_64_start_reservations(char *real_mode_data)
+{
 	copy_bootdata(__va(real_mode_data));
 
+	reserve_trampoline_memory();
+
 	reserve_early(__pa_symbol(&_text), __pa_symbol(&_end), "TEXT DATA BSS");
 
+#ifdef CONFIG_BLK_DEV_INITRD
 	/* Reserve INITRD */
 	if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
 		unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
@@ -130,8 +133,9 @@ void __init x86_64_start_kernel(char * real_mode_data)
 		unsigned long ramdisk_end   = ramdisk_image + ramdisk_size;
 		reserve_early(ramdisk_image, ramdisk_end, "RAMDISK");
 	}
+#endif
 
-	reserve_ebda();
+	reserve_ebda_region();
 
 	/*
 	 * At this point everything still needed from the boot loader