#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/console.h>
+#include <linux/mca.h>
#include <linux/root_dev.h>
#include <linux/highmem.h>
#include <linux/module.h>
#include <linux/efi.h>
#include <linux/init.h>
#include <linux/edd.h>
+#include <linux/nodemask.h>
#include <video/edid.h>
#include <asm/e820.h>
#include <asm/mpspec.h>
struct cpuinfo_x86 boot_cpu_data = { 0, 0, 0, 0, -1, 1, 0, 0, -1 };
unsigned long mmu_cr4_features;
-EXPORT_SYMBOL_GPL(mmu_cr4_features);
#ifdef CONFIG_ACPI_INTERPRETER
int acpi_disabled = 0;
extern acpi_interrupt_flags acpi_sci_flags;
#endif
-int MCA_bus;
/* for MCA, but anyone else can use it if they want */
unsigned int machine_id;
unsigned int machine_submodel_id;
/* For PCI or other memory-mapped resources */
unsigned long pci_mem_start = 0x10000000;
+/* Boot loader ID as an integer, for the benefit of proc_dointvec */
+int bootloader_type;
+
/* user-defined highmem size */
static unsigned int highmem_pages = -1;
struct ist_info ist_info;
struct e820map e820;
-unsigned char aux_device_present;
-
extern void early_cpu_init(void);
extern void dmi_scan_machine(void);
extern void generic_apic_probe(char *);
struct e820entry *pbios; /* pointer to original bios entry */
unsigned long long addr; /* address for this change point */
};
-struct change_member change_point_list[2*E820MAX] __initdata;
-struct change_member *change_point[2*E820MAX] __initdata;
-struct e820entry *overlap_list[E820MAX] __initdata;
-struct e820entry new_bios[E820MAX] __initdata;
+static struct change_member change_point_list[2*E820MAX] __initdata;
+static struct change_member *change_point[2*E820MAX] __initdata;
+static struct e820entry *overlap_list[E820MAX] __initdata;
+static struct e820entry new_bios[E820MAX] __initdata;
static int __init sanitize_e820_map(struct e820entry * biosmap, char * pnr_map)
{
saved_command_line[COMMAND_LINE_SIZE-1] = '\0';
for (;;) {
+ if (c != ' ')
+ goto next_char;
/*
* "mem=nopentium" disables the 4MB page tables.
* "mem=XXX[kKmM]" defines a memory region from HIGH_MEM
* HPA tells me bootloaders need to parse mem=, so no new
* option should be mem= [also see Documentation/i386/boot.txt]
*/
- if (c == ' ' && !memcmp(from, "mem=", 4)) {
+ if (!memcmp(from, "mem=", 4)) {
if (to != command_line)
to--;
if (!memcmp(from+4, "nopentium", 9)) {
}
}
- if (c == ' ' && !memcmp(from, "memmap=", 7)) {
+ else if (!memcmp(from, "memmap=", 7)) {
if (to != command_line)
to--;
if (!memcmp(from+7, "exactmap", 8)) {
}
}
+ else if (!memcmp(from, "noexec=", 7))
+ noexec_setup(from + 7);
+
+
#ifdef CONFIG_X86_SMP
/*
* If the BIOS enumerates physical processors before logical,
* This works even on boxes that have no highmem otherwise.
* This also works to reduce highmem size on bigger boxes.
*/
- if (c == ' ' && !memcmp(from, "highmem=", 8))
+ else if (!memcmp(from, "highmem=", 8))
highmem_pages = memparse(from+8, &from) >> PAGE_SHIFT;
if (!memcmp(from, "dump", 4))
* bytes. This can be used to increase (or decrease) the
* vmalloc area - the default is 128m.
*/
- if (c == ' ' && !memcmp(from, "vmalloc=", 8))
+ else if (!memcmp(from, "vmalloc=", 8))
__VMALLOC_RESERVE = memparse(from+8, &from);
+ next_char:
c = *(from++);
if (!c)
break;
return max_low_pfn;
}
-#ifndef CONFIG_DISCONTIGMEM
-
/*
* Free all available memory for boot time allocation. Used
* as a callback function by efi_memory_walk()
reserve_bootmem(addr, PAGE_SIZE);
}
+#ifndef CONFIG_DISCONTIGMEM
+void __init setup_bootmem_allocator(void);
static unsigned long __init setup_memory(void)
{
- unsigned long bootmap_size, start_pfn, max_low_pfn;
-
/*
* partially used pages are not usable - thus
* we are rounding upwards:
*/
- start_pfn = PFN_UP(init_pg_tables_end);
+ min_low_pfn = PFN_UP(init_pg_tables_end);
find_max_pfn();
#endif
printk(KERN_NOTICE "%ldMB LOWMEM available.\n",
pages_to_mb(max_low_pfn));
+
+ setup_bootmem_allocator();
+
+ return max_low_pfn;
+}
+
+void __init zone_sizes_init(void)
+{
+ unsigned long zones_size[MAX_NR_ZONES] = {0, 0, 0};
+ unsigned int max_dma, low;
+
+ max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
+ low = max_low_pfn;
+
+ if (low < max_dma)
+ zones_size[ZONE_DMA] = low;
+ else {
+ zones_size[ZONE_DMA] = max_dma;
+ zones_size[ZONE_NORMAL] = low - max_dma;
+#ifdef CONFIG_HIGHMEM
+ zones_size[ZONE_HIGHMEM] = highend_pfn - low;
+#endif
+ }
+ free_area_init(zones_size);
+}
+#else
+extern unsigned long setup_memory(void);
+extern void zone_sizes_init(void);
+#endif /* !CONFIG_DISCONTIGMEM */
+
+void __init setup_bootmem_allocator(void)
+{
+ unsigned long bootmap_size;
/*
* Initialize the boot-time allocator (with low memory only):
*/
- bootmap_size = init_bootmem(start_pfn, max_low_pfn);
+ bootmap_size = init_bootmem(min_low_pfn, max_low_pfn);
register_bootmem_low_pages(max_low_pfn);
* the (very unlikely) case of us accidentally initializing the
* bootmem allocator with an invalid RAM area.
*/
- reserve_bootmem(HIGH_MEMORY, (PFN_PHYS(start_pfn) +
+ reserve_bootmem(HIGH_MEMORY, (PFN_PHYS(min_low_pfn) +
bootmap_size + PAGE_SIZE-1) - (HIGH_MEMORY));
/*
}
}
#endif
+}
- crash_reserve_bootmem();
+/*
+ * The node 0 pgdat is initialized before all of these because
+ * it's needed for bootmem. node>0 pgdats have their virtual
+ * space allocated before the pagetables are in place to access
+ * them, so they can't be cleared then.
+ *
+ * This should all compile down to nothing when NUMA is off.
+ */
+void __init remapped_pgdat_init(void)
+{
+ int nid;
- return max_low_pfn;
+ for_each_online_node(nid) {
+ if (nid != 0)
+ memset(NODE_DATA(nid), 0, sizeof(struct pglist_data));
+ }
}
-#else
-extern unsigned long setup_memory(void);
-#endif /* !CONFIG_DISCONTIGMEM */
/*
* Request address space for all standard RAM and ROM resources
/*
* Request address space for all standard resources
*/
-static void __init register_memory(unsigned long max_low_pfn)
+static void __init register_memory(void)
{
- unsigned long low_mem_size;
+ unsigned long gapstart, gapsize;
+ unsigned long long last;
int i;
if (efi_enabled)
for (i = 0; i < STANDARD_IO_RESOURCES; i++)
request_resource(&ioport_resource, &standard_io_resources[i]);
- /* Tell the PCI layer not to allocate too close to the RAM area.. */
- low_mem_size = ((max_low_pfn << PAGE_SHIFT) + 0xfffff) & ~0xfffff;
- if (low_mem_size > pci_mem_start)
- pci_mem_start = low_mem_size;
+ /*
+ * Search for the bigest gap in the low 32 bits of the e820
+ * memory space.
+ */
+ last = 0x100000000ull;
+ gapstart = 0x10000000;
+ gapsize = 0x400000;
+ i = e820.nr_map;
+ while (--i >= 0) {
+ unsigned long long start = e820.map[i].addr;
+ unsigned long long end = start + e820.map[i].size;
+
+ /*
+ * Since "last" is at most 4GB, we know we'll
+ * fit in 32 bits if this condition is true
+ */
+ if (last > end) {
+ unsigned long gap = last - end;
+
+ if (gap > gapsize) {
+ gapsize = gap;
+ gapstart = end;
+ }
+ }
+ if (start < last)
+ last = start;
+ }
+
+ /*
+ * 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.
+ */
+ pci_mem_start = (gapstart + 0xfffff) & ~0xfffff;
+
+ printk("Allocating PCI resources starting at %08lx (gap: %08lx:%08lx)\n",
+ pci_mem_start, gapstart, gapsize);
}
/* Use inline assembly to define this because the nops are defined
extern void crashdump_reserve(void);
#endif
+#ifdef CONFIG_MCA
+static void set_mca_bus(int x)
+{
+ MCA_bus = x;
+}
+#else
+static void set_mca_bus(int x) { }
+#endif
+
/*
* Determine if we were loaded by an EFI loader. If so, then we have also been
* passed the efi memmap, systab, etc., so we should use these data structures
ist_info = IST_INFO;
saved_videomode = VIDEO_MODE;
if( SYS_DESC_TABLE.length != 0 ) {
- MCA_bus = SYS_DESC_TABLE.table[3] &0x2;
+ set_mca_bus(SYS_DESC_TABLE.table[3] & 0x2);
machine_id = SYS_DESC_TABLE.table[0];
machine_submodel_id = SYS_DESC_TABLE.table[1];
BIOS_revision = SYS_DESC_TABLE.table[2];
}
- aux_device_present = AUX_DEVICE_INFO;
+ bootloader_type = LOADER_TYPE;
#ifdef CONFIG_BLK_DEV_RAM
rd_image_start = RAMDISK_FLAGS & RAMDISK_IMAGE_START_MASK;
smp_alloc_memory(); /* AP processor realmode stacks in low memory*/
#endif
paging_init();
+ remapped_pgdat_init();
+ zone_sizes_init();
/*
* NOTE: at this point the bootmem allocator is fully available.
if (efi_enabled)
efi_map_memmap();
+#ifdef CONFIG_ACPI_BOOT
/*
* Parse the ACPI tables for possible boot-time SMP configuration.
*/
+ acpi_boot_table_init();
acpi_boot_init();
+#endif
#ifdef CONFIG_X86_LOCAL_APIC
if (smp_found_config)
get_smp_config();
#endif
- register_memory(max_low_pfn);
+ register_memory();
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
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