X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=arch%2Fx86%2Fkernel%2Fsetup_32.c;h=2b3e5d45176bda99d2172a2484076e973d53cfd4;hb=866bc13fc4c625186dd01429c68c5cf708f1cfd5;hp=704550fdb84c56ad7673e483ee9b603bb4f535cb;hpb=8b2cb7a8f531d6ca72a8aff873b9bb1c6b3122ba;p=safe%2Fjmp%2Flinux-2.6

diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 704550f..2b3e5d4 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -45,9 +45,11 @@
 #include <linux/dmi.h>
 #include <linux/pfn.h>
 #include <linux/pci.h>
+#include <linux/init_ohci1394_dma.h>
 
 #include <video/edid.h>
 
+#include <asm/mtrr.h>
 #include <asm/apic.h>
 #include <asm/e820.h>
 #include <asm/mpspec.h>
@@ -68,8 +70,6 @@
    address, and must not be in the .bss segment! */
 unsigned long init_pg_tables_end __initdata = ~0UL;
 
-int disable_pse __cpuinitdata = 0;
-
 /*
  * Machine setup..
  */
@@ -154,13 +154,16 @@ struct cpuinfo_x86 new_cpu_data __cpuinitdata = { 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);
 
+#ifndef CONFIG_X86_PAE
 unsigned long mmu_cr4_features;
+#else
+unsigned long mmu_cr4_features = X86_CR4_PAE;
+#endif
 
 /* for MCA, but anyone else can use it if they want */
 unsigned int machine_id;
 unsigned int machine_submodel_id;
 unsigned int BIOS_revision;
-unsigned int mca_pentium_flag;
 
 /* Boot loader ID as an integer, for the benefit of proc_dointvec */
 int bootloader_type;
@@ -188,13 +191,17 @@ extern int root_mountflags;
 
 unsigned long saved_videomode;
 
-#define RAMDISK_IMAGE_START_MASK  	0x07FF
+#define RAMDISK_IMAGE_START_MASK	0x07FF
 #define RAMDISK_PROMPT_FLAG		0x8000
-#define RAMDISK_LOAD_FLAG		0x4000	
+#define RAMDISK_LOAD_FLAG		0x4000
 
 static char __initdata command_line[COMMAND_LINE_SIZE];
 
+#ifndef CONFIG_DEBUG_BOOT_PARAMS
 struct boot_params __initdata boot_params;
+#else
+struct boot_params boot_params;
+#endif
 
 #if defined(CONFIG_EDD) || defined(CONFIG_EDD_MODULE)
 struct edd edd;
@@ -238,8 +245,7 @@ static int __init parse_mem(char *arg)
 		return -EINVAL;
 
 	if (strcmp(arg, "nopentium") == 0) {
-		clear_cpu_cap(&boot_cpu_data, X86_FEATURE_PSE);
-		disable_pse = 1;
+		setup_clear_cpu_cap(X86_FEATURE_PSE);
 	} else {
 		/* If the user specifies memory size, we
 		 * limit the BIOS-provided memory map to
@@ -248,7 +254,7 @@ static int __init parse_mem(char *arg)
 		 * trim the existing memory map.
 		 */
 		unsigned long long mem_size;
- 
+
 		mem_size = memparse(arg, &arg);
 		limit_regions(mem_size);
 		user_defined_memmap = 1;
@@ -387,7 +393,7 @@ static void __init reserve_ebda_region(void)
 	unsigned int addr;
 	addr = get_bios_ebda();
 	if (addr)
-		reserve_bootmem(addr, PAGE_SIZE);	
+		reserve_bootmem(addr, PAGE_SIZE, BOOTMEM_DEFAULT);
 }
 
 #ifndef CONFIG_NEED_MULTIPLE_NODES
@@ -400,8 +406,6 @@ static unsigned long __init setup_memory(void)
 	 */
 	min_low_pfn = PFN_UP(init_pg_tables_end);
 
-	find_max_pfn();
-
 	max_low_pfn = find_max_low_pfn();
 
 #ifdef CONFIG_HIGHMEM
@@ -481,7 +485,8 @@ static void __init reserve_crashkernel(void)
 					(unsigned long)(total_mem >> 20));
 			crashk_res.start = crash_base;
 			crashk_res.end   = crash_base + crash_size - 1;
-			reserve_bootmem(crash_base, crash_size);
+			reserve_bootmem(crash_base, crash_size,
+					BOOTMEM_DEFAULT);
 		} else
 			printk(KERN_INFO "crashkernel reservation failed - "
 					"you have to specify a base address\n");
@@ -492,6 +497,100 @@ static inline void __init reserve_crashkernel(void)
 {}
 #endif
 
+#ifdef CONFIG_BLK_DEV_INITRD
+
+static bool do_relocate_initrd = false;
+
+static void __init reserve_initrd(void)
+{
+	unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
+	unsigned long ramdisk_size  = boot_params.hdr.ramdisk_size;
+	unsigned long ramdisk_end   = ramdisk_image + ramdisk_size;
+	unsigned long end_of_lowmem = max_low_pfn << PAGE_SHIFT;
+	unsigned long ramdisk_here;
+
+	initrd_start = 0;
+
+	if (!boot_params.hdr.type_of_loader ||
+	    !ramdisk_image || !ramdisk_size)
+		return;		/* No initrd provided by bootloader */
+
+	if (ramdisk_end < ramdisk_image) {
+		printk(KERN_ERR "initrd wraps around end of memory, "
+		       "disabling initrd\n");
+		return;
+	}
+	if (ramdisk_size >= end_of_lowmem/2) {
+		printk(KERN_ERR "initrd too large to handle, "
+		       "disabling initrd\n");
+		return;
+	}
+	if (ramdisk_end <= end_of_lowmem) {
+		/* All in lowmem, easy case */
+		reserve_bootmem(ramdisk_image, ramdisk_size, BOOTMEM_DEFAULT);
+		initrd_start = ramdisk_image + PAGE_OFFSET;
+		initrd_end = initrd_start+ramdisk_size;
+		return;
+	}
+
+	/* We need to move the initrd down into lowmem */
+	ramdisk_here = (end_of_lowmem - ramdisk_size) & PAGE_MASK;
+
+	/* Note: this includes all the lowmem currently occupied by
+	   the initrd, we rely on that fact to keep the data intact. */
+	reserve_bootmem(ramdisk_here, ramdisk_size, BOOTMEM_DEFAULT);
+	initrd_start = ramdisk_here + PAGE_OFFSET;
+	initrd_end   = initrd_start + ramdisk_size;
+
+	do_relocate_initrd = true;
+}
+
+#define MAX_MAP_CHUNK	(NR_FIX_BTMAPS << PAGE_SHIFT)
+
+static void __init relocate_initrd(void)
+{
+	unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
+	unsigned long ramdisk_size  = boot_params.hdr.ramdisk_size;
+	unsigned long end_of_lowmem = max_low_pfn << PAGE_SHIFT;
+	unsigned long ramdisk_here;
+	unsigned long slop, clen, mapaddr;
+	char *p, *q;
+
+	if (!do_relocate_initrd)
+		return;
+
+	ramdisk_here = initrd_start - PAGE_OFFSET;
+
+	q = (char *)initrd_start;
+
+	/* Copy any lowmem portion of the initrd */
+	if (ramdisk_image < end_of_lowmem) {
+		clen = end_of_lowmem - ramdisk_image;
+		p = (char *)__va(ramdisk_image);
+		memcpy(q, p, clen);
+		q += clen;
+		ramdisk_image += clen;
+		ramdisk_size  -= clen;
+	}
+
+	/* Copy the highmem portion of the initrd */
+	while (ramdisk_size) {
+		slop = ramdisk_image & ~PAGE_MASK;
+		clen = ramdisk_size;
+		if (clen > MAX_MAP_CHUNK-slop)
+			clen = MAX_MAP_CHUNK-slop;
+		mapaddr = ramdisk_image & PAGE_MASK;
+		p = early_ioremap(mapaddr, clen+slop);
+		memcpy(q, p+slop, clen);
+		early_iounmap(p, clen+slop);
+		q += clen;
+		ramdisk_image += clen;
+		ramdisk_size  -= clen;
+	}
+}
+
+#endif /* CONFIG_BLK_DEV_INITRD */
+
 void __init setup_bootmem_allocator(void)
 {
 	unsigned long bootmap_size;
@@ -509,13 +608,14 @@ void __init setup_bootmem_allocator(void)
 	 * bootmem allocator with an invalid RAM area.
 	 */
 	reserve_bootmem(__pa_symbol(_text), (PFN_PHYS(min_low_pfn) +
-			 bootmap_size + PAGE_SIZE-1) - __pa_symbol(_text));
+			 bootmap_size + PAGE_SIZE-1) - __pa_symbol(_text),
+			 BOOTMEM_DEFAULT);
 
 	/*
 	 * reserve physical page 0 - it's a special BIOS page on many boxes,
 	 * enabling clean reboots, SMP operation, laptop functions.
 	 */
-	reserve_bootmem(0, PAGE_SIZE);
+	reserve_bootmem(0, PAGE_SIZE, BOOTMEM_DEFAULT);
 
 	/* reserve EBDA region, it's a 4K region */
 	reserve_ebda_region();
@@ -525,7 +625,7 @@ void __init setup_bootmem_allocator(void)
        unless you have no PS/2 mouse plugged in. */
 	if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
 	    boot_cpu_data.x86 == 6)
-	     reserve_bootmem(0xa0000 - 4096, 4096);
+	     reserve_bootmem(0xa0000 - 4096, 4096, BOOTMEM_DEFAULT);
 
 #ifdef CONFIG_SMP
 	/*
@@ -533,7 +633,7 @@ void __init setup_bootmem_allocator(void)
 	 * FIXME: Don't need the extra page at 4K, but need to fix
 	 * trampoline before removing it. (see the GDT stuff)
 	 */
-	reserve_bootmem(PAGE_SIZE, PAGE_SIZE);
+	reserve_bootmem(PAGE_SIZE, PAGE_SIZE, BOOTMEM_DEFAULT);
 #endif
 #ifdef CONFIG_ACPI_SLEEP
 	/*
@@ -547,26 +647,10 @@ void __init setup_bootmem_allocator(void)
 	 */
 	find_smp_config();
 #endif
-	numa_kva_reserve();
 #ifdef CONFIG_BLK_DEV_INITRD
-	if (boot_params.hdr.type_of_loader && boot_params.hdr.ramdisk_image) {
-		unsigned long ramdisk_image = boot_params.hdr.ramdisk_image;
-		unsigned long ramdisk_size  = boot_params.hdr.ramdisk_size;
-		unsigned long ramdisk_end   = ramdisk_image + ramdisk_size;
-		unsigned long end_of_lowmem = max_low_pfn << PAGE_SHIFT;
-
-		if (ramdisk_end <= end_of_lowmem) {
-			reserve_bootmem(ramdisk_image, ramdisk_size);
-			initrd_start = ramdisk_image + PAGE_OFFSET;
-			initrd_end = initrd_start+ramdisk_size;
-		} else {
-			printk(KERN_ERR "initrd extends beyond end of memory "
-			       "(0x%08lx > 0x%08lx)\ndisabling initrd\n",
-			       ramdisk_end, end_of_lowmem);
-			initrd_start = 0;
-		}
-	}
+	reserve_initrd();
 #endif
+	numa_kva_reserve();
 	reserve_crashkernel();
 }
 
@@ -617,6 +701,7 @@ void __init setup_arch(char **cmdline_p)
 	memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
 	pre_setup_arch_hook();
 	early_cpu_init();
+	early_ioremap_init();
 
 #ifdef CONFIG_EFI
 	if (!strncmp((char *)&boot_params.efi_info.efi_loader_signature,
@@ -677,6 +762,12 @@ void __init setup_arch(char **cmdline_p)
 	if (efi_enabled)
 		efi_init();
 
+	/* update e820 for memory not covered by WB MTRRs */
+	find_max_pfn();
+	mtrr_bp_init();
+	if (mtrr_trim_uncached_memory(max_pfn))
+		find_max_pfn();
+
 	max_low_pfn = setup_memory();
 
 #ifdef CONFIG_VMI
@@ -701,6 +792,16 @@ void __init setup_arch(char **cmdline_p)
 	smp_alloc_memory(); /* AP processor realmode stacks in low memory*/
 #endif
 	paging_init();
+
+	/*
+	 * NOTE: On x86-32, only from this point on, fixmaps are ready for use.
+	 */
+
+#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
+	if (init_ohci1394_dma_early)
+		init_ohci1394_dma_on_all_controllers();
+#endif
+
 	remapped_pgdat_init();
 	sparse_init();
 	zone_sizes_init();
@@ -709,17 +810,19 @@ void __init setup_arch(char **cmdline_p)
 	 * NOTE: at this point the bootmem allocator is fully available.
 	 */
 
+#ifdef CONFIG_BLK_DEV_INITRD
+	relocate_initrd();
+#endif
+
 	paravirt_post_allocator_init();
 
 	dmi_scan_machine();
 
-	io_delay_init();;
+	io_delay_init();
 
 #ifdef CONFIG_X86_GENERICARCH
 	generic_apic_probe();
-#endif	
-	if (efi_enabled)
-		efi_map_memmap();
+#endif
 
 #ifdef CONFIG_ACPI
 	/*