summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/setup.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/setup.c')
-rw-r--r--arch/x86/kernel/setup.c196
1 files changed, 151 insertions, 45 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 6a8811a6932..b4158439bf6 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -74,14 +74,15 @@
#include <asm/e820.h>
#include <asm/mpspec.h>
#include <asm/setup.h>
-#include <asm/arch_hooks.h>
#include <asm/efi.h>
+#include <asm/timer.h>
+#include <asm/i8259.h>
#include <asm/sections.h>
#include <asm/dmi.h>
#include <asm/io_apic.h>
#include <asm/ist.h>
#include <asm/vmi.h>
-#include <setup_arch.h>
+#include <asm/setup_arch.h>
#include <asm/bios_ebda.h>
#include <asm/cacheflush.h>
#include <asm/processor.h>
@@ -89,7 +90,7 @@
#include <asm/system.h>
#include <asm/vsyscall.h>
-#include <asm/smp.h>
+#include <asm/cpu.h>
#include <asm/desc.h>
#include <asm/dma.h>
#include <asm/iommu.h>
@@ -97,7 +98,6 @@
#include <asm/mmu_context.h>
#include <asm/proto.h>
-#include <mach_apic.h>
#include <asm/paravirt.h>
#include <asm/hypervisor.h>
@@ -112,6 +112,25 @@
#define ARCH_SETUP
#endif
+RESERVE_BRK(dmi_alloc, 65536);
+
+unsigned int boot_cpu_id __read_mostly;
+
+static __initdata unsigned long _brk_start = (unsigned long)__brk_base;
+unsigned long _brk_end = (unsigned long)__brk_base;
+
+#ifdef CONFIG_X86_64
+int default_cpu_present_to_apicid(int mps_cpu)
+{
+ return __default_cpu_present_to_apicid(mps_cpu);
+}
+
+int default_check_phys_apicid_present(int boot_cpu_physical_apicid)
+{
+ return __default_check_phys_apicid_present(boot_cpu_physical_apicid);
+}
+#endif
+
#ifndef CONFIG_DEBUG_BOOT_PARAMS
struct boot_params __initdata boot_params;
#else
@@ -144,12 +163,6 @@ static struct resource bss_resource = {
#ifdef CONFIG_X86_32
-/* This value is set up by the early boot code to point to the value
- immediately after the boot time page tables. It contains a *physical*
- address, and must not be in the .bss segment! */
-unsigned long init_pg_tables_start __initdata = ~0UL;
-unsigned long init_pg_tables_end __initdata = ~0UL;
-
static struct resource video_ram_resource = {
.name = "Video RAM area",
.start = 0xa0000,
@@ -188,7 +201,9 @@ struct ist_info ist_info;
#endif
#else
-struct cpuinfo_x86 boot_cpu_data __read_mostly;
+struct cpuinfo_x86 boot_cpu_data __read_mostly = {
+ .x86_phys_bits = MAX_PHYSMEM_BITS,
+};
EXPORT_SYMBOL(boot_cpu_data);
#endif
@@ -203,12 +218,6 @@ unsigned long mmu_cr4_features = X86_CR4_PAE;
int bootloader_type;
/*
- * Early DMI memory
- */
-int dmi_alloc_index;
-char dmi_alloc_data[DMI_MAX_DATA];
-
-/*
* Setup options
*/
struct screen_info screen_info;
@@ -253,6 +262,35 @@ static inline void copy_edd(void)
}
#endif
+void * __init extend_brk(size_t size, size_t align)
+{
+ size_t mask = align - 1;
+ void *ret;
+
+ BUG_ON(_brk_start == 0);
+ BUG_ON(align & mask);
+
+ _brk_end = (_brk_end + mask) & ~mask;
+ BUG_ON((char *)(_brk_end + size) > __brk_limit);
+
+ ret = (void *)_brk_end;
+ _brk_end += size;
+
+ memset(ret, 0, size);
+
+ return ret;
+}
+
+static void __init reserve_brk(void)
+{
+ if (_brk_end > _brk_start)
+ reserve_early(__pa(_brk_start), __pa(_brk_end), "BRK");
+
+ /* Mark brk area as locked down and no longer taking any
+ new allocations */
+ _brk_start = 0;
+}
+
#ifdef CONFIG_BLK_DEV_INITRD
#ifdef CONFIG_X86_32
@@ -586,20 +624,7 @@ static int __init setup_elfcorehdr(char *arg)
early_param("elfcorehdr", setup_elfcorehdr);
#endif
-static int __init default_update_genapic(void)
-{
-#ifdef CONFIG_X86_SMP
-# if defined(CONFIG_X86_GENERICARCH) || defined(CONFIG_X86_64)
- genapic->wakeup_cpu = wakeup_secondary_cpu_via_init;
-# endif
-#endif
-
- return 0;
-}
-
-static struct x86_quirks default_x86_quirks __initdata = {
- .update_genapic = default_update_genapic,
-};
+static struct x86_quirks default_x86_quirks __initdata;
struct x86_quirks *x86_quirks __initdata = &default_x86_quirks;
@@ -656,7 +681,6 @@ void __init setup_arch(char **cmdline_p)
#ifdef CONFIG_X86_32
memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
visws_early_detect();
- pre_setup_arch_hook();
#else
printk(KERN_INFO "Command line: %s\n", boot_command_line);
#endif
@@ -715,11 +739,7 @@ void __init setup_arch(char **cmdline_p)
init_mm.start_code = (unsigned long) _text;
init_mm.end_code = (unsigned long) _etext;
init_mm.end_data = (unsigned long) _edata;
-#ifdef CONFIG_X86_32
- init_mm.brk = init_pg_tables_end + PAGE_OFFSET;
-#else
- init_mm.brk = (unsigned long) &_end;
-#endif
+ init_mm.brk = _brk_end;
code_resource.start = virt_to_phys(_text);
code_resource.end = virt_to_phys(_etext)-1;
@@ -824,8 +844,7 @@ void __init setup_arch(char **cmdline_p)
#else
num_physpages = max_pfn;
- if (cpu_has_x2apic)
- check_x2apic();
+ check_x2apic();
/* How many end-of-memory variables you have, grandma! */
/* need this before calling reserve_initrd */
@@ -841,6 +860,8 @@ void __init setup_arch(char **cmdline_p)
setup_bios_corruption_check();
#endif
+ reserve_brk();
+
/* max_pfn_mapped is updated here */
max_low_pfn_mapped = init_memory_mapping(0, max_low_pfn<<PAGE_SHIFT);
max_pfn_mapped = max_low_pfn_mapped;
@@ -865,9 +886,7 @@ void __init setup_arch(char **cmdline_p)
reserve_initrd();
-#ifdef CONFIG_X86_64
vsmp_init();
-#endif
io_delay_init();
@@ -893,12 +912,11 @@ void __init setup_arch(char **cmdline_p)
*/
acpi_reserve_bootmem();
#endif
-#ifdef CONFIG_X86_FIND_SMP_CONFIG
/*
* Find and reserve possible boot-time SMP configuration:
*/
find_smp_config();
-#endif
+
reserve_crashkernel();
#ifdef CONFIG_X86_64
@@ -925,9 +943,7 @@ void __init setup_arch(char **cmdline_p)
map_vsyscall();
#endif
-#ifdef CONFIG_X86_GENERICARCH
generic_apic_probe();
-#endif
early_quirks();
@@ -978,4 +994,94 @@ void __init setup_arch(char **cmdline_p)
#endif
}
+#ifdef CONFIG_X86_32
+
+/**
+ * x86_quirk_pre_intr_init - initialisation prior to setting up interrupt vectors
+ *
+ * Description:
+ * Perform any necessary interrupt initialisation prior to setting up
+ * the "ordinary" interrupt call gates. For legacy reasons, the ISA
+ * interrupts should be initialised here if the machine emulates a PC
+ * in any way.
+ **/
+void __init x86_quirk_pre_intr_init(void)
+{
+ if (x86_quirks->arch_pre_intr_init) {
+ if (x86_quirks->arch_pre_intr_init())
+ return;
+ }
+ init_ISA_irqs();
+}
+/**
+ * x86_quirk_intr_init - post gate setup interrupt initialisation
+ *
+ * Description:
+ * Fill in any interrupts that may have been left out by the general
+ * init_IRQ() routine. interrupts having to do with the machine rather
+ * than the devices on the I/O bus (like APIC interrupts in intel MP
+ * systems) are started here.
+ **/
+void __init x86_quirk_intr_init(void)
+{
+ if (x86_quirks->arch_intr_init) {
+ if (x86_quirks->arch_intr_init())
+ return;
+ }
+}
+
+/**
+ * x86_quirk_trap_init - initialise system specific traps
+ *
+ * Description:
+ * Called as the final act of trap_init(). Used in VISWS to initialise
+ * the various board specific APIC traps.
+ **/
+void __init x86_quirk_trap_init(void)
+{
+ if (x86_quirks->arch_trap_init) {
+ if (x86_quirks->arch_trap_init())
+ return;
+ }
+}
+
+static struct irqaction irq0 = {
+ .handler = timer_interrupt,
+ .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL | IRQF_TIMER,
+ .name = "timer"
+};
+
+/**
+ * x86_quirk_pre_time_init - do any specific initialisations before.
+ *
+ **/
+void __init x86_quirk_pre_time_init(void)
+{
+ if (x86_quirks->arch_pre_time_init)
+ x86_quirks->arch_pre_time_init();
+}
+
+/**
+ * x86_quirk_time_init - do any specific initialisations for the system timer.
+ *
+ * Description:
+ * Must plug the system timer interrupt source at HZ into the IRQ listed
+ * in irq_vectors.h:TIMER_IRQ
+ **/
+void __init x86_quirk_time_init(void)
+{
+ if (x86_quirks->arch_time_init) {
+ /*
+ * A nonzero return code does not mean failure, it means
+ * that the architecture quirk does not want any
+ * generic (timer) setup to be performed after this:
+ */
+ if (x86_quirks->arch_time_init())
+ return;
+ }
+
+ irq0.mask = cpumask_of_cpu(0);
+ setup_irq(0, &irq0);
+}
+#endif /* CONFIG_X86_32 */