Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

[sfrench/cifs-2.6.git] / arch / i386 / kernel / setup.c

diff --git a/arch/i386/kernel/setup.c b/arch/i386/kernel/setup.c
index 7306353c520ec6dc4c74a6cac328f8b5ba446d64..dc39ca6a7eca82f546c649cb6b2e1b3c6a20b4a2 100644 (file)
--- a/arch/i386/kernel/setup.c
+++ b/arch/i386/kernel/setup.c
@@ -82,19 +82,19 @@ EXPORT_SYMBOL(efi_enabled);
 /* cpu data as detected by the assembly code in head.S */
 struct cpuinfo_x86 new_cpu_data __initdata = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
 /* common cpu data for all cpus */
-struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
+struct cpuinfo_x86 boot_cpu_data __read_mostly = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
 EXPORT_SYMBOL(boot_cpu_data);
 
 unsigned long mmu_cr4_features;
 
-#ifdef CONFIG_ACPI_INTERPRETER
+#ifdef CONFIG_ACPI
        int acpi_disabled = 0;
 #else
        int acpi_disabled = 1;
 #endif
 EXPORT_SYMBOL(acpi_disabled);
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
 int __initdata acpi_force = 0;
 extern acpi_interrupt_flags    acpi_sci_flags;
 #endif
@@ -139,6 +139,7 @@ struct sys_desc_table_struct {
        unsigned char table[0];
 };
 struct edid_info edid_info;
+EXPORT_SYMBOL_GPL(edid_info);
 struct ist_info ist_info;
 #if defined(CONFIG_X86_SPEEDSTEP_SMI) || \
        defined(CONFIG_X86_SPEEDSTEP_SMI_MODULE)
@@ -370,12 +371,16 @@ static void __init limit_regions(unsigned long long size)
        int i;
 
        if (efi_enabled) {
-               for (i = 0; i < memmap.nr_map; i++) {
-                       current_addr = memmap.map[i].phys_addr +
-                                      (memmap.map[i].num_pages << 12);
-                       if (memmap.map[i].type == EFI_CONVENTIONAL_MEMORY) {
+               efi_memory_desc_t *md;
+               void *p;
+
+               for (p = memmap.map, i = 0; p < memmap.map_end;
+                       p += memmap.desc_size, i++) {
+                       md = p;
+                       current_addr = md->phys_addr + (md->num_pages << 12);
+                       if (md->type == EFI_CONVENTIONAL_MEMORY) {
                                if (current_addr >= size) {
-                                       memmap.map[i].num_pages -=
+                                       md->num_pages -=
                                                (((current_addr-size) + PAGE_SIZE-1) >> PAGE_SHIFT);
                                        memmap.nr_map = i + 1;
                                        return;
@@ -794,7 +799,7 @@ static void __init parse_cmdline_early (char ** cmdline_p)
                }
 #endif
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
                /* "acpi=off" disables both ACPI table parsing and interpreter */
                else if (!memcmp(from, "acpi=off", 8)) {
                        disable_acpi();
@@ -846,11 +851,16 @@ static void __init parse_cmdline_early (char ** cmdline_p)
 #endif
 
 #ifdef CONFIG_X86_LOCAL_APIC
+               if (!memcmp(from, "disable_timer_pin_1", 19))
+                       disable_timer_pin_1 = 1;
+               if (!memcmp(from, "enable_timer_pin_1", 18))
+                       disable_timer_pin_1 = -1;
+
                /* disable IO-APIC */
                else if (!memcmp(from, "noapic", 6))
                        disable_ioapic_setup();
 #endif /* CONFIG_X86_LOCAL_APIC */
-#endif /* CONFIG_ACPI_BOOT */
+#endif /* CONFIG_ACPI */
 
 #ifdef CONFIG_X86_LOCAL_APIC
                /* enable local APIC */
@@ -1295,7 +1305,7 @@ legacy_init_iomem_resources(struct resource *code_resource, struct resource *dat
  */
 static void __init register_memory(void)
 {
-       unsigned long gapstart, gapsize;
+       unsigned long gapstart, gapsize, round;
        unsigned long long last;
        int           i;
 
@@ -1340,14 +1350,14 @@ static void __init register_memory(void)
        }
 
        /*
-        * Start allocating dynamic PCI memory a bit into the gap,
-        * aligned up to the nearest megabyte.
-        *
-        * Question: should we try to pad it up a bit (do something
-        * like " + (gapsize >> 3)" in there too?). We now have the
-        * technology.
+        * See how much we want to round up: start off with
+        * rounding to the next 1MB area.
         */
-       pci_mem_start = (gapstart + 0xfffff) & ~0xfffff;
+       round = 0x100000;
+       while ((gapsize >> 4) > round)
+               round += round;
+       /* Fun with two's complement */
+       pci_mem_start = (gapstart + round) & -round;
 
        printk("Allocating PCI resources starting at %08lx (gap: %08lx:%08lx)\n",
                pci_mem_start, gapstart, gapsize);
@@ -1414,7 +1424,7 @@ static struct nop {
    This runs before SMP is initialized to avoid SMP problems with
    self modifying code. This implies that assymetric systems where
    APs have less capabilities than the boot processor are not handled. 
-   In this case boot with "noreplacement". */ 
+   Tough. Make sure you disable such features by hand. */ 
 void apply_alternatives(void *start, void *end) 
 { 
        struct alt_instr *a; 
@@ -1442,24 +1452,12 @@ void apply_alternatives(void *start, void *end)
        }
 } 
 
-static int no_replacement __initdata = 0; 
- 
 void __init alternative_instructions(void)
 {
        extern struct alt_instr __alt_instructions[], __alt_instructions_end[];
-       if (no_replacement) 
-               return;
        apply_alternatives(__alt_instructions, __alt_instructions_end);
 }
 
-static int __init noreplacement_setup(char *s)
-{ 
-     no_replacement = 1; 
-     return 0; 
-} 
-
-__setup("noreplacement", noreplacement_setup); 
-
 static char * __init machine_specific_memory_setup(void);
 
 #ifdef CONFIG_MCA
@@ -1587,14 +1585,20 @@ void __init setup_arch(char **cmdline_p)
        if (efi_enabled)
                efi_map_memmap();
 
-#ifdef CONFIG_ACPI_BOOT
+#ifdef CONFIG_ACPI
        /*
         * Parse the ACPI tables for possible boot-time SMP configuration.
         */
        acpi_boot_table_init();
        acpi_boot_init();
-#endif
 
+#if defined(CONFIG_SMP) && defined(CONFIG_X86_PC)
+       if (def_to_bigsmp)
+               printk(KERN_WARNING "More than 8 CPUs detected and "
+                       "CONFIG_X86_PC cannot handle it.\nUse "
+                       "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
+#endif
+#endif
 #ifdef CONFIG_X86_LOCAL_APIC
        if (smp_found_config)
                get_smp_config();