x86: move e820_resource_resources to e820.c

and make 32-bit resource registration more like 64 bit. also move probe_roms back to setup_32.c Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
author: Yinghai Lu <yhlu.kernel@gmail.com> 2008-06-16 16:03:31 -0400
committer: Ingo Molnar <mingo@elte.hu> 2008-07-08 04:38:14 -0400
commit: 41c094fd3ca54f1a71233049cf136ff94c91f4ae (patch)
tree: 9ce8de894276e69d30c893700a9b70fb4e176511
parent: 8c5beb50d3ec915d15c4d38aa37282309a65f14e (diff)
7 files changed, 208 insertions, 254 deletions
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 544dd12c70f4..432c49178577 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -998,3 +998,35 @@ void __init finish_e820_parsing(void)
                e820_print_map("user");
        }
 }
+/*
+ * Mark e820 reserved areas as busy for the resource manager.
+ */
+void __init e820_reserve_resources(void)
+{
+        int i;
+        struct resource *res;
+        res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
+        for (i = 0; i < e820.nr_map; i++) {
+                switch (e820.map[i].type) {
+                case E820_RAM:  res->name = "System RAM"; break;
+                case E820_ACPI: res->name = "ACPI Tables"; break;
+                case E820_NVS:  res->name = "ACPI Non-volatile Storage"; break;
+                default:        res->name = "reserved";
+                }
+                res->start = e820.map[i].addr;
+                res->end = res->start + e820.map[i].size - 1;
+#ifndef CONFIG_RESOURCES_64BIT
+                if (res->end > 0x100000000ULL) {
+                        res++;
+                        continue;
+                }
+#endif
+                res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+                insert_resource(&iomem_resource, res);
+                res++;
+        }
+}
diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c
index 8de3df9548db..1205ccf086d7 100644
--- a/arch/x86/kernel/e820_32.c
+++ b/arch/x86/kernel/e820_32.c
@@ -15,198 +15,6 @@
 #include <asm/e820.h>
 #include <asm/setup.h>
-static struct resource system_rom_resource = {
-        .name   = "System ROM",
-        .start  = 0xf0000,
-        .end    = 0xfffff,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-static struct resource extension_rom_resource = {
-        .name   = "Extension ROM",
-        .start  = 0xe0000,
-        .end    = 0xeffff,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-static struct resource adapter_rom_resources[] = { {
-        .name   = "Adapter ROM",
-        .start  = 0xc8000,
-        .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
-        .name   = "Adapter ROM",
-        .start  = 0,
-        .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
-        .name   = "Adapter ROM",
-        .start  = 0,
-        .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
-        .name   = "Adapter ROM",
-        .start  = 0,
-        .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
-        .name   = "Adapter ROM",
-        .start  = 0,
-        .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-}, {
-        .name   = "Adapter ROM",
-        .start  = 0,
-        .end    = 0,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-} };
-static struct resource video_rom_resource = {
-        .name   = "Video ROM",
-        .start  = 0xc0000,
-        .end    = 0xc7fff,
-        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
-};
-#define ROMSIGNATURE 0xaa55
-static int __init romsignature(const unsigned char *rom)
-{
-        const unsigned short * const ptr = (const unsigned short *)rom;
-        unsigned short sig;
-        return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
-}
-static int __init romchecksum(const unsigned char *rom, unsigned long length)
-{
-        unsigned char sum, c;
-        for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
-                sum += c;
-        return !length && !sum;
-}
-static void __init probe_roms(void)
-{
-        const unsigned char *rom;
-        unsigned long start, length, upper;
-        unsigned char c;
-        int i;
-        /* video rom */
-        upper = adapter_rom_resources[0].start;
-        for (start = video_rom_resource.start; start < upper; start += 2048) {
-                rom = isa_bus_to_virt(start);
-                if (!romsignature(rom))
-                        continue;
-                video_rom_resource.start = start;
-                if (probe_kernel_address(rom + 2, c) != 0)
-                        continue;
-                /* 0 < length <= 0x7f * 512, historically */
-                length = c * 512;
-                /* if checksum okay, trust length byte */
-                if (length && romchecksum(rom, length))
-                        video_rom_resource.end = start + length - 1;
-                request_resource(&iomem_resource, &video_rom_resource);
-                break;
-        }
-        start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
-        if (start < upper)
-                start = upper;
-        /* system rom */
-        request_resource(&iomem_resource, &system_rom_resource);
-        upper = system_rom_resource.start;
-        /* check for extension rom (ignore length byte!) */
-        rom = isa_bus_to_virt(extension_rom_resource.start);
-        if (romsignature(rom)) {
-                length = extension_rom_resource.end - extension_rom_resource.start + 1;
-                if (romchecksum(rom, length)) {
-                        request_resource(&iomem_resource, &extension_rom_resource);
-                        upper = extension_rom_resource.start;
-                }
-        }
-        /* check for adapter roms on 2k boundaries */
-        for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; start += 2048) {
-                rom = isa_bus_to_virt(start);
-                if (!romsignature(rom))
-                        continue;
-                if (probe_kernel_address(rom + 2, c) != 0)
-                        continue;
-                /* 0 < length <= 0x7f * 512, historically */
-                length = c * 512;
-                /* but accept any length that fits if checksum okay */
-                if (!length || start + length > upper || !romchecksum(rom, length))
-                        continue;
-                adapter_rom_resources[i].start = start;
-                adapter_rom_resources[i].end = start + length - 1;
-                request_resource(&iomem_resource, &adapter_rom_resources[i]);
-                start = adapter_rom_resources[i++].end & ~2047UL;
-        }
-}
-/*
- * Request address space for all standard RAM and ROM resources
- * and also for regions reported as reserved by the e820.
- */
-void __init init_iomem_resources(struct resource *code_resource,
-                struct resource *data_resource,
-                struct resource *bss_resource)
-{
-        int i;
-        probe_roms();
-        for (i = 0; i < e820.nr_map; i++) {
-                struct resource *res;
-#ifndef CONFIG_RESOURCES_64BIT
-                if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
-                        continue;
-#endif
-                res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
-                switch (e820.map[i].type) {
-                case E820_RAM:  res->name = "System RAM"; break;
-                case E820_ACPI: res->name = "ACPI Tables"; break;
-                case E820_NVS:  res->name = "ACPI Non-volatile Storage"; break;
-                default:        res->name = "reserved";
-                }
-                res->start = e820.map[i].addr;
-                res->end = res->start + e820.map[i].size - 1;
-                res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-                if (request_resource(&iomem_resource, res)) {
-                        kfree(res);
-                        continue;
-                }
-                if (e820.map[i].type == E820_RAM) {
-                        /*
-                         *  We don't know which RAM region contains kernel data,
-                         *  so we try it repeatedly and let the resource manager
-                         *  test it.
-                         */
-                        request_resource(res, code_resource);
-                        request_resource(res, data_resource);
-                        request_resource(res, bss_resource);
-#ifdef CONFIG_KEXEC
-                        if (crashk_res.start != crashk_res.end)
-                                request_resource(res, &crashk_res);
-#endif
-                }
-        }
-}
 /* Overridden in paravirt.c if CONFIG_PARAVIRT */
 char * __init __attribute__((weak)) memory_setup(void)
 {
diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c
index 47952b1690b6..cb03bff9fa2f 100644
--- a/arch/x86/kernel/e820_64.c
+++ b/arch/x86/kernel/e820_64.c
@@ -41,30 +41,6 @@ unsigned long end_pfn;
 */
 unsigned long max_pfn_mapped;
-/*
- * Mark e820 reserved areas as busy for the resource manager.
- */
-void __init e820_reserve_resources(void)
-{
-        int i;
-        struct resource *res;
-        res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
-        for (i = 0; i < e820.nr_map; i++) {
-                switch (e820.map[i].type) {
-                case E820_RAM:  res->name = "System RAM"; break;
-                case E820_ACPI: res->name = "ACPI Tables"; break;
-                case E820_NVS:  res->name = "ACPI Non-volatile Storage"; break;
-                default:        res->name = "reserved";
-                }
-                res->start = e820.map[i].addr;
-                res->end = res->start + e820.map[i].size - 1;
-                res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-                insert_resource(&iomem_resource, res);
-                res++;
-        }
-}
 static void early_panic(char *msg)
 {
        early_printk(msg);
diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c
index 72b11d4557b7..f3ddba5ed9a7 100644
--- a/arch/x86/kernel/setup_32.c
+++ b/arch/x86/kernel/setup_32.c
@@ -445,25 +445,28 @@ static void __init reserve_crashkernel(void)
        ret = parse_crashkernel(boot_command_line, total_mem,
                        &crash_size, &crash_base);
        if (ret == 0 && crash_size > 0) {
-                if (crash_base > 0) {
+                if (crash_base <= 0) {
-                        printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
-                                        "for crashkernel (System RAM: %ldMB)\n",
-                                        (unsigned long)(crash_size >> 20),
-                                        (unsigned long)(crash_base >> 20),
-                                        (unsigned long)(total_mem >> 20));
-                        if (reserve_bootmem(crash_base, crash_size,
-                                        BOOTMEM_EXCLUSIVE) < 0) {
-                                printk(KERN_INFO "crashkernel reservation "
-                                        "failed - memory is in use\n");
-                                return;
-                        }
-                        crashk_res.start = crash_base;
-                        crashk_res.end   = crash_base + crash_size - 1;
-                } else
                        printk(KERN_INFO "crashkernel reservation failed - "
                                        "you have to specify a base address\n");
+                        return;
+                }
+                if (reserve_bootmem_generic(crash_base, crash_size,
+                                        BOOTMEM_EXCLUSIVE) < 0) {
+                        printk(KERN_INFO "crashkernel reservation failed - "
+                                        "memory is in use\n");
+                        return;
+                }
+                printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
+                                "for crashkernel (System RAM: %ldMB)\n",
+                                (unsigned long)(crash_size >> 20),
+                                (unsigned long)(crash_base >> 20),
+                                (unsigned long)(total_mem >> 20));
+                crashk_res.start = crash_base;
+                crashk_res.end   = crash_base + crash_size - 1;
+                insert_resource(&iomem_resource, &crashk_res);
        }
 }
 #else
@@ -675,6 +678,8 @@ int x86_cpu_to_node_map_init[NR_CPUS] = {
 DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;
 #endif
+static void probe_roms(void);
 /*
 * 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
@@ -684,6 +689,7 @@ DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;
 */
 void __init setup_arch(char **cmdline_p)
 {
+        int i;
        unsigned long max_low_pfn;
        memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
@@ -745,6 +751,13 @@ void __init setup_arch(char **cmdline_p)
        finish_e820_parsing();
+        probe_roms();
+        /* after parse_early_param, so could debug it */
+        insert_resource(&iomem_resource, &code_resource);
+        insert_resource(&iomem_resource, &data_resource);
+        insert_resource(&iomem_resource, &bss_resource);
        strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
        *cmdline_p = command_line;
@@ -861,9 +874,16 @@ void __init setup_arch(char **cmdline_p)
                        "CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
 #endif
-        e820_setup_gap();
+        e820_reserve_resources();
        e820_mark_nosave_regions(max_low_pfn);
+        request_resource(&iomem_resource, &video_ram_resource);
+        /* request I/O space for devices used on all i[345]86 PCs */
+        for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
+                request_resource(&ioport_resource, &standard_io_resources[i]);
+        e820_setup_gap();
 #ifdef CONFIG_VT
 #if defined(CONFIG_VGA_CONSOLE)
        if (!efi_enabled || (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
@@ -874,25 +894,147 @@ void __init setup_arch(char **cmdline_p)
 #endif
 }
-/*
+static struct resource system_rom_resource = {
- * Request address space for all standard resources
+        .name   = "System ROM",
- *
+        .start  = 0xf0000,
- * This is called just before pcibios_init(), which is also a
+        .end    = 0xfffff,
- * subsys_initcall, but is linked in later (in arch/i386/pci/common.c).
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
- */
+};
-static int __init request_standard_resources(void)
+static struct resource extension_rom_resource = {
+        .name   = "Extension ROM",
+        .start  = 0xe0000,
+        .end    = 0xeffff,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+};
+static struct resource adapter_rom_resources[] = { {
+        .name   = "Adapter ROM",
+        .start  = 0xc8000,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+        .name   = "Adapter ROM",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+        .name   = "Adapter ROM",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+        .name   = "Adapter ROM",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+        .name   = "Adapter ROM",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+}, {
+        .name   = "Adapter ROM",
+        .start  = 0,
+        .end    = 0,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+} };
+static struct resource video_rom_resource = {
+        .name   = "Video ROM",
+        .start  = 0xc0000,
+        .end    = 0xc7fff,
+        .flags  = IORESOURCE_BUSY | IORESOURCE_READONLY | IORESOURCE_MEM
+};
+#define ROMSIGNATURE 0xaa55
+static int __init romsignature(const unsigned char *rom)
+{
+        const unsigned short * const ptr = (const unsigned short *)rom;
+        unsigned short sig;
+        return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
+}
+static int __init romchecksum(const unsigned char *rom, unsigned long length)
+{
+        unsigned char sum, c;
+        for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
+                sum += c;
+        return !length && !sum;
+}
+static void __init probe_roms(void)
 {
+        const unsigned char *rom;
+        unsigned long start, length, upper;
+        unsigned char c;
        int i;
-        printk(KERN_INFO "Setting up standard PCI resources\n");
+        /* video rom */
-        init_iomem_resources(&code_resource, &data_resource, &bss_resource);
+        upper = adapter_rom_resources[0].start;
+        for (start = video_rom_resource.start; start < upper; start += 2048) {
+                rom = isa_bus_to_virt(start);
+                if (!romsignature(rom))
+                        continue;
-        request_resource(&iomem_resource, &video_ram_resource);
+                video_rom_resource.start = start;
-        /* request I/O space for devices used on all i[345]86 PCs */
+                if (probe_kernel_address(rom + 2, c) != 0)
-        for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
+                        continue;
-                request_resource(&ioport_resource, &standard_io_resources[i]);
-        return 0;
+                /* 0 < length <= 0x7f * 512, historically */
+                length = c * 512;
+                /* if checksum okay, trust length byte */
+                if (length && romchecksum(rom, length))
+                        video_rom_resource.end = start + length - 1;
+                request_resource(&iomem_resource, &video_rom_resource);
+                break;
+        }
+        start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
+        if (start < upper)
+                start = upper;
+        /* system rom */
+        request_resource(&iomem_resource, &system_rom_resource);
+        upper = system_rom_resource.start;
+        /* check for extension rom (ignore length byte!) */
+        rom = isa_bus_to_virt(extension_rom_resource.start);
+        if (romsignature(rom)) {
+                length = extension_rom_resource.end - extension_rom_resource.start + 1;
+                if (romchecksum(rom, length)) {
+                        request_resource(&iomem_resource, &extension_rom_resource);
+                        upper = extension_rom_resource.start;
+                }
+        }
+        /* check for adapter roms on 2k boundaries */
+        for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; start += 2048) {
+                rom = isa_bus_to_virt(start);
+                if (!romsignature(rom))
+                        continue;
+                if (probe_kernel_address(rom + 2, c) != 0)
+                        continue;
+                /* 0 < length <= 0x7f * 512, historically */
+                length = c * 512;
+                /* but accept any length that fits if checksum okay */
+                if (!length || start + length > upper || !romchecksum(rom, length))
+                        continue;
+                adapter_rom_resources[i].start = start;
+                adapter_rom_resources[i].end = start + length - 1;
+                request_resource(&iomem_resource, &adapter_rom_resources[i]);
+                start = adapter_rom_resources[i++].end & ~2047UL;
+        }
 }
-subsys_initcall(request_standard_resources);
diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h
index 77fc24d89163..e860fe758e79 100644
--- a/include/asm-x86/e820.h
+++ b/include/asm-x86/e820.h
@@ -100,6 +100,7 @@ extern void e820_register_active_regions(int nid, unsigned long start_pfn,
                                         unsigned long end_pfn);
 extern u64 e820_hole_size(u64 start, u64 end);
 extern void finish_e820_parsing(void);
+extern void e820_reserve_resources(void);
 #endif /* __ASSEMBLY__ */
diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h
index 9135ce6e617e..557b890549ff 100644
--- a/include/asm-x86/e820_32.h
+++ b/include/asm-x86/e820_32.h
@@ -20,9 +20,5 @@
 extern void setup_memory_map(void);
-extern void init_iomem_resources(struct resource *code_resource,
-                                 struct resource *data_resource,
-                                 struct resource *bss_resource);
 #endif/*!__ASSEMBLY__*/
 #endif/*__E820_HEADER*/
diff --git a/include/asm-x86/e820_64.h b/include/asm-x86/e820_64.h
index 478547c63222..8d992109969b 100644
--- a/include/asm-x86/e820_64.h
+++ b/include/asm-x86/e820_64.h
@@ -16,7 +16,6 @@
 #ifndef __ASSEMBLY__
 extern void setup_memory_region(void);
 extern void contig_e820_setup(void);
-extern void e820_reserve_resources(void);
 extern int e820_any_non_reserved(unsigned long start, unsigned long end);
 extern int is_memory_any_valid(unsigned long start, unsigned long end);
 extern int e820_all_non_reserved(unsigned long start, unsigned long end);
author	Yinghai Lu <yhlu.kernel@gmail.com>	2008-06-16 16:03:31 -0400
committer	Ingo Molnar <mingo@elte.hu>	2008-07-08 04:38:14 -0400
commit	41c094fd3ca54f1a71233049cf136ff94c91f4ae (patch)
tree	9ce8de894276e69d30c893700a9b70fb4e176511
parent	8c5beb50d3ec915d15c4d38aa37282309a65f14e (diff)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c index 544dd12c70f4..432c49178577 100644 --- a/arch/x86/kernel/e820.c +++ b/arch/x86/kernel/e820.c
@@ -998,3 +998,35 @@ void __init finish_e820_parsing(void)
998	e820_print_map("user");	998	e820_print_map("user");
999	}	999	}
1000	}	1000	}
		1001
		1002	/*
		1003	* Mark e820 reserved areas as busy for the resource manager.
		1004	*/
		1005	void __init e820_reserve_resources(void)
		1006	{
		1007	int i;
		1008	struct resource *res;
		1009
		1010	res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
		1011	for (i = 0; i < e820.nr_map; i++) {
		1012	switch (e820.map[i].type) {
		1013	case E820_RAM: res->name = "System RAM"; break;
		1014	case E820_ACPI: res->name = "ACPI Tables"; break;
		1015	case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
		1016	default: res->name = "reserved";
		1017	}
		1018	res->start = e820.map[i].addr;
		1019	res->end = res->start + e820.map[i].size - 1;
		1020	#ifndef CONFIG_RESOURCES_64BIT
		1021	if (res->end > 0x100000000ULL) {
		1022	res++;
		1023	continue;
		1024	}
		1025	#endif
		1026	res->flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
		1027	insert_resource(&iomem_resource, res);
		1028	res++;
		1029	}
		1030	}
		1031
		1032


diff --git a/arch/x86/kernel/e820_32.c b/arch/x86/kernel/e820_32.c index 8de3df9548db..1205ccf086d7 100644 --- a/arch/x86/kernel/e820_32.c +++ b/arch/x86/kernel/e820_32.c
@@ -15,198 +15,6 @@
15	#include <asm/e820.h>	15	#include <asm/e820.h>
16	#include <asm/setup.h>	16	#include <asm/setup.h>
17		17
18	static struct resource system_rom_resource = {
19	.name = "System ROM",
20	.start = 0xf0000,
21	.end = 0xfffff,
22	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
23	};
24
25	static struct resource extension_rom_resource = {
26	.name = "Extension ROM",
27	.start = 0xe0000,
28	.end = 0xeffff,
29	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
30	};
31
32	static struct resource adapter_rom_resources[] = { {
33	.name = "Adapter ROM",
34	.start = 0xc8000,
35	.end = 0,
36	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
37	}, {
38	.name = "Adapter ROM",
39	.start = 0,
40	.end = 0,
41	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
42	}, {
43	.name = "Adapter ROM",
44	.start = 0,
45	.end = 0,
46	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
47	}, {
48	.name = "Adapter ROM",
49	.start = 0,
50	.end = 0,
51	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
52	}, {
53	.name = "Adapter ROM",
54	.start = 0,
55	.end = 0,
56	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
57	}, {
58	.name = "Adapter ROM",
59	.start = 0,
60	.end = 0,
61	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
62	} };
63
64	static struct resource video_rom_resource = {
65	.name = "Video ROM",
66	.start = 0xc0000,
67	.end = 0xc7fff,
68	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
69	};
70
71	#define ROMSIGNATURE 0xaa55
72
73	static int __init romsignature(const unsigned char *rom)
74	{
75	const unsigned short * const ptr = (const unsigned short *)rom;
76	unsigned short sig;
77
78	return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
79	}
80
81	static int __init romchecksum(const unsigned char *rom, unsigned long length)
82	{
83	unsigned char sum, c;
84
85	for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
86	sum += c;
87	return !length && !sum;
88	}
89
90	static void __init probe_roms(void)
91	{
92	const unsigned char *rom;
93	unsigned long start, length, upper;
94	unsigned char c;
95	int i;
96
97	/* video rom */
98	upper = adapter_rom_resources[0].start;
99	for (start = video_rom_resource.start; start < upper; start += 2048) {
100	rom = isa_bus_to_virt(start);
101	if (!romsignature(rom))
102	continue;
103
104	video_rom_resource.start = start;
105
106	if (probe_kernel_address(rom + 2, c) != 0)
107	continue;
108
109	/* 0 < length <= 0x7f * 512, historically */
110	length = c * 512;
111
112	/* if checksum okay, trust length byte */
113	if (length && romchecksum(rom, length))
114	video_rom_resource.end = start + length - 1;
115
116	request_resource(&iomem_resource, &video_rom_resource);
117	break;
118	}
119
120	start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
121	if (start < upper)
122	start = upper;
123
124	/* system rom */
125	request_resource(&iomem_resource, &system_rom_resource);
126	upper = system_rom_resource.start;
127
128	/* check for extension rom (ignore length byte!) */
129	rom = isa_bus_to_virt(extension_rom_resource.start);
130	if (romsignature(rom)) {
131	length = extension_rom_resource.end - extension_rom_resource.start + 1;
132	if (romchecksum(rom, length)) {
133	request_resource(&iomem_resource, &extension_rom_resource);
134	upper = extension_rom_resource.start;
135	}
136	}
137
138	/* check for adapter roms on 2k boundaries */
139	for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; start += 2048) {
140	rom = isa_bus_to_virt(start);
141	if (!romsignature(rom))
142	continue;
143
144	if (probe_kernel_address(rom + 2, c) != 0)
145	continue;
146
147	/* 0 < length <= 0x7f * 512, historically */
148	length = c * 512;
149
150	/* but accept any length that fits if checksum okay */
151	if (!length \|\| start + length > upper \|\| !romchecksum(rom, length))
152	continue;
153
154	adapter_rom_resources[i].start = start;
155	adapter_rom_resources[i].end = start + length - 1;
156	request_resource(&iomem_resource, &adapter_rom_resources[i]);
157
158	start = adapter_rom_resources[i++].end & ~2047UL;
159	}
160	}
161
162	/*
163	* Request address space for all standard RAM and ROM resources
164	* and also for regions reported as reserved by the e820.
165	*/
166	void __init init_iomem_resources(struct resource *code_resource,
167	struct resource *data_resource,
168	struct resource *bss_resource)
169	{
170	int i;
171
172	probe_roms();
173	for (i = 0; i < e820.nr_map; i++) {
174	struct resource *res;
175	#ifndef CONFIG_RESOURCES_64BIT
176	if (e820.map[i].addr + e820.map[i].size > 0x100000000ULL)
177	continue;
178	#endif
179	res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
180	switch (e820.map[i].type) {
181	case E820_RAM: res->name = "System RAM"; break;
182	case E820_ACPI: res->name = "ACPI Tables"; break;
183	case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
184	default: res->name = "reserved";
185	}
186	res->start = e820.map[i].addr;
187	res->end = res->start + e820.map[i].size - 1;
188	res->flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
189	if (request_resource(&iomem_resource, res)) {
190	kfree(res);
191	continue;
192	}
193	if (e820.map[i].type == E820_RAM) {
194	/*
195	* We don't know which RAM region contains kernel data,
196	* so we try it repeatedly and let the resource manager
197	* test it.
198	*/
199	request_resource(res, code_resource);
200	request_resource(res, data_resource);
201	request_resource(res, bss_resource);
202	#ifdef CONFIG_KEXEC
203	if (crashk_res.start != crashk_res.end)
204	request_resource(res, &crashk_res);
205	#endif
206	}
207	}
208	}
209
210	/* Overridden in paravirt.c if CONFIG_PARAVIRT */	18	/* Overridden in paravirt.c if CONFIG_PARAVIRT */
211	char * __init __attribute__((weak)) memory_setup(void)	19	char * __init __attribute__((weak)) memory_setup(void)
212	{	20	{


diff --git a/arch/x86/kernel/e820_64.c b/arch/x86/kernel/e820_64.c index 47952b1690b6..cb03bff9fa2f 100644 --- a/arch/x86/kernel/e820_64.c +++ b/arch/x86/kernel/e820_64.c
@@ -41,30 +41,6 @@ unsigned long end_pfn;
41	*/	41	*/
42	unsigned long max_pfn_mapped;	42	unsigned long max_pfn_mapped;
43		43
44	/*
45	* Mark e820 reserved areas as busy for the resource manager.
46	*/
47	void __init e820_reserve_resources(void)
48	{
49	int i;
50	struct resource *res;
51
52	res = alloc_bootmem_low(sizeof(struct resource) * e820.nr_map);
53	for (i = 0; i < e820.nr_map; i++) {
54	switch (e820.map[i].type) {
55	case E820_RAM: res->name = "System RAM"; break;
56	case E820_ACPI: res->name = "ACPI Tables"; break;
57	case E820_NVS: res->name = "ACPI Non-volatile Storage"; break;
58	default: res->name = "reserved";
59	}
60	res->start = e820.map[i].addr;
61	res->end = res->start + e820.map[i].size - 1;
62	res->flags = IORESOURCE_MEM \| IORESOURCE_BUSY;
63	insert_resource(&iomem_resource, res);
64	res++;
65	}
66	}
67
68	static void early_panic(char *msg)	44	static void early_panic(char *msg)
69	{	45	{
70	early_printk(msg);	46	early_printk(msg);


diff --git a/arch/x86/kernel/setup_32.c b/arch/x86/kernel/setup_32.c index 72b11d4557b7..f3ddba5ed9a7 100644 --- a/arch/x86/kernel/setup_32.c +++ b/arch/x86/kernel/setup_32.c
@@ -445,25 +445,28 @@ static void __init reserve_crashkernel(void)
445	ret = parse_crashkernel(boot_command_line, total_mem,	445	ret = parse_crashkernel(boot_command_line, total_mem,
446	&crash_size, &crash_base);	446	&crash_size, &crash_base);
447	if (ret == 0 && crash_size > 0) {	447	if (ret == 0 && crash_size > 0) {
448	if (crash_base > 0) {	448	if (crash_base <= 0) {
449	printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
450	"for crashkernel (System RAM: %ldMB)\n",
451	(unsigned long)(crash_size >> 20),
452	(unsigned long)(crash_base >> 20),
453	(unsigned long)(total_mem >> 20));
454
455	if (reserve_bootmem(crash_base, crash_size,
456	BOOTMEM_EXCLUSIVE) < 0) {
457	printk(KERN_INFO "crashkernel reservation "
458	"failed - memory is in use\n");
459	return;
460	}
461
462	crashk_res.start = crash_base;
463	crashk_res.end = crash_base + crash_size - 1;
464	} else
465	printk(KERN_INFO "crashkernel reservation failed - "	449	printk(KERN_INFO "crashkernel reservation failed - "
466	"you have to specify a base address\n");	450	"you have to specify a base address\n");
		451	return;
		452	}
		453
		454	if (reserve_bootmem_generic(crash_base, crash_size,
		455	BOOTMEM_EXCLUSIVE) < 0) {
		456	printk(KERN_INFO "crashkernel reservation failed - "
		457	"memory is in use\n");
		458	return;
		459	}
		460
		461	printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
		462	"for crashkernel (System RAM: %ldMB)\n",
		463	(unsigned long)(crash_size >> 20),
		464	(unsigned long)(crash_base >> 20),
		465	(unsigned long)(total_mem >> 20));
		466
		467	crashk_res.start = crash_base;
		468	crashk_res.end = crash_base + crash_size - 1;
		469	insert_resource(&iomem_resource, &crashk_res);
467	}	470	}
468	}	471	}
469	#else	472	#else
@@ -675,6 +678,8 @@ int x86_cpu_to_node_map_init[NR_CPUS] = {
675	DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;	678	DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;
676	#endif	679	#endif
677		680
		681	static void probe_roms(void);
		682
678	/*	683	/*
679	* Determine if we were loaded by an EFI loader. If so, then we have also been	684	* Determine if we were loaded by an EFI loader. If so, then we have also been
680	* passed the efi memmap, systab, etc., so we should use these data structures	685	* passed the efi memmap, systab, etc., so we should use these data structures
@@ -684,6 +689,7 @@ DEFINE_PER_CPU(int, x86_cpu_to_node_map) = NUMA_NO_NODE;
684	*/	689	*/
685	void __init setup_arch(char **cmdline_p)	690	void __init setup_arch(char **cmdline_p)
686	{	691	{
		692	int i;
687	unsigned long max_low_pfn;	693	unsigned long max_low_pfn;
688		694
689	memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));	695	memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data));
@@ -745,6 +751,13 @@ void __init setup_arch(char **cmdline_p)
745		751
746	finish_e820_parsing();	752	finish_e820_parsing();
747		753
		754	probe_roms();
		755
		756	/* after parse_early_param, so could debug it */
		757	insert_resource(&iomem_resource, &code_resource);
		758	insert_resource(&iomem_resource, &data_resource);
		759	insert_resource(&iomem_resource, &bss_resource);
		760
748	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);	761	strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
749	*cmdline_p = command_line;	762	*cmdline_p = command_line;
750		763
@@ -861,9 +874,16 @@ void __init setup_arch(char **cmdline_p)
861	"CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");	874	"CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.\n");
862	#endif	875	#endif
863		876
864	e820_setup_gap();	877	e820_reserve_resources();
865	e820_mark_nosave_regions(max_low_pfn);	878	e820_mark_nosave_regions(max_low_pfn);
866		879
		880	request_resource(&iomem_resource, &video_ram_resource);
		881	/* request I/O space for devices used on all i[345]86 PCs */
		882	for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
		883	request_resource(&ioport_resource, &standard_io_resources[i]);
		884
		885	e820_setup_gap();
		886
867	#ifdef CONFIG_VT	887	#ifdef CONFIG_VT
868	#if defined(CONFIG_VGA_CONSOLE)	888	#if defined(CONFIG_VGA_CONSOLE)
869	if (!efi_enabled \|\| (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))	889	if (!efi_enabled \|\| (efi_mem_type(0xa0000) != EFI_CONVENTIONAL_MEMORY))
@@ -874,25 +894,147 @@ void __init setup_arch(char **cmdline_p)
874	#endif	894	#endif
875	}	895	}
876		896
877	/*	897	static struct resource system_rom_resource = {
878	* Request address space for all standard resources	898	.name = "System ROM",
879	*	899	.start = 0xf0000,
880	* This is called just before pcibios_init(), which is also a	900	.end = 0xfffff,
881	* subsys_initcall, but is linked in later (in arch/i386/pci/common.c).	901	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
882	*/	902	};
883	static int __init request_standard_resources(void)	903
		904	static struct resource extension_rom_resource = {
		905	.name = "Extension ROM",
		906	.start = 0xe0000,
		907	.end = 0xeffff,
		908	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		909	};
		910
		911	static struct resource adapter_rom_resources[] = { {
		912	.name = "Adapter ROM",
		913	.start = 0xc8000,
		914	.end = 0,
		915	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		916	}, {
		917	.name = "Adapter ROM",
		918	.start = 0,
		919	.end = 0,
		920	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		921	}, {
		922	.name = "Adapter ROM",
		923	.start = 0,
		924	.end = 0,
		925	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		926	}, {
		927	.name = "Adapter ROM",
		928	.start = 0,
		929	.end = 0,
		930	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		931	}, {
		932	.name = "Adapter ROM",
		933	.start = 0,
		934	.end = 0,
		935	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		936	}, {
		937	.name = "Adapter ROM",
		938	.start = 0,
		939	.end = 0,
		940	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		941	} };
		942
		943	static struct resource video_rom_resource = {
		944	.name = "Video ROM",
		945	.start = 0xc0000,
		946	.end = 0xc7fff,
		947	.flags = IORESOURCE_BUSY \| IORESOURCE_READONLY \| IORESOURCE_MEM
		948	};
		949
		950	#define ROMSIGNATURE 0xaa55
		951
		952	static int __init romsignature(const unsigned char *rom)
		953	{
		954	const unsigned short * const ptr = (const unsigned short *)rom;
		955	unsigned short sig;
		956
		957	return probe_kernel_address(ptr, sig) == 0 && sig == ROMSIGNATURE;
		958	}
		959
		960	static int __init romchecksum(const unsigned char *rom, unsigned long length)
		961	{
		962	unsigned char sum, c;
		963
		964	for (sum = 0; length && probe_kernel_address(rom++, c) == 0; length--)
		965	sum += c;
		966	return !length && !sum;
		967	}
		968
		969	static void __init probe_roms(void)
884	{	970	{
		971	const unsigned char *rom;
		972	unsigned long start, length, upper;
		973	unsigned char c;
885	int i;	974	int i;
886		975
887	printk(KERN_INFO "Setting up standard PCI resources\n");	976	/* video rom */
888	init_iomem_resources(&code_resource, &data_resource, &bss_resource);	977	upper = adapter_rom_resources[0].start;
		978	for (start = video_rom_resource.start; start < upper; start += 2048) {
		979	rom = isa_bus_to_virt(start);
		980	if (!romsignature(rom))
		981	continue;
889		982
890	request_resource(&iomem_resource, &video_ram_resource);	983	video_rom_resource.start = start;
891		984
892	/* request I/O space for devices used on all i[345]86 PCs */	985	if (probe_kernel_address(rom + 2, c) != 0)
893	for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)	986	continue;
894	request_resource(&ioport_resource, &standard_io_resources[i]);	987
895	return 0;	988	/* 0 < length <= 0x7f * 512, historically */
		989	length = c * 512;
		990
		991	/* if checksum okay, trust length byte */
		992	if (length && romchecksum(rom, length))
		993	video_rom_resource.end = start + length - 1;
		994
		995	request_resource(&iomem_resource, &video_rom_resource);
		996	break;
		997	}
		998
		999	start = (video_rom_resource.end + 1 + 2047) & ~2047UL;
		1000	if (start < upper)
		1001	start = upper;
		1002
		1003	/* system rom */
		1004	request_resource(&iomem_resource, &system_rom_resource);
		1005	upper = system_rom_resource.start;
		1006
		1007	/* check for extension rom (ignore length byte!) */
		1008	rom = isa_bus_to_virt(extension_rom_resource.start);
		1009	if (romsignature(rom)) {
		1010	length = extension_rom_resource.end - extension_rom_resource.start + 1;
		1011	if (romchecksum(rom, length)) {
		1012	request_resource(&iomem_resource, &extension_rom_resource);
		1013	upper = extension_rom_resource.start;
		1014	}
		1015	}
		1016
		1017	/* check for adapter roms on 2k boundaries */
		1018	for (i = 0; i < ARRAY_SIZE(adapter_rom_resources) && start < upper; start += 2048) {
		1019	rom = isa_bus_to_virt(start);
		1020	if (!romsignature(rom))
		1021	continue;
		1022
		1023	if (probe_kernel_address(rom + 2, c) != 0)
		1024	continue;
		1025
		1026	/* 0 < length <= 0x7f * 512, historically */
		1027	length = c * 512;
		1028
		1029	/* but accept any length that fits if checksum okay */
		1030	if (!length \|\| start + length > upper \|\| !romchecksum(rom, length))
		1031	continue;
		1032
		1033	adapter_rom_resources[i].start = start;
		1034	adapter_rom_resources[i].end = start + length - 1;
		1035	request_resource(&iomem_resource, &adapter_rom_resources[i]);
		1036
		1037	start = adapter_rom_resources[i++].end & ~2047UL;
		1038	}
896	}	1039	}
897		1040
898	subsys_initcall(request_standard_resources);


diff --git a/include/asm-x86/e820.h b/include/asm-x86/e820.h index 77fc24d89163..e860fe758e79 100644 --- a/include/asm-x86/e820.h +++ b/include/asm-x86/e820.h
@@ -100,6 +100,7 @@ extern void e820_register_active_regions(int nid, unsigned long start_pfn,
100	unsigned long end_pfn);	100	unsigned long end_pfn);
101	extern u64 e820_hole_size(u64 start, u64 end);	101	extern u64 e820_hole_size(u64 start, u64 end);
102	extern void finish_e820_parsing(void);	102	extern void finish_e820_parsing(void);
		103	extern void e820_reserve_resources(void);
103		104
104	#endif /* __ASSEMBLY__ */	105	#endif /* __ASSEMBLY__ */
105		106


diff --git a/include/asm-x86/e820_32.h b/include/asm-x86/e820_32.h index 9135ce6e617e..557b890549ff 100644 --- a/include/asm-x86/e820_32.h +++ b/include/asm-x86/e820_32.h
@@ -20,9 +20,5 @@
20		20
21	extern void setup_memory_map(void);	21	extern void setup_memory_map(void);
22		22
23	extern void init_iomem_resources(struct resource *code_resource,
24	struct resource *data_resource,
25	struct resource *bss_resource);
26
27	#endif/!__ASSEMBLY__/	23	#endif/!__ASSEMBLY__/
28	#endif/__E820_HEADER/	24	#endif/__E820_HEADER/


diff --git a/include/asm-x86/e820_64.h b/include/asm-x86/e820_64.h index 478547c63222..8d992109969b 100644 --- a/include/asm-x86/e820_64.h +++ b/include/asm-x86/e820_64.h
@@ -16,7 +16,6 @@
16	#ifndef __ASSEMBLY__	16	#ifndef __ASSEMBLY__
17	extern void setup_memory_region(void);	17	extern void setup_memory_region(void);
18	extern void contig_e820_setup(void);	18	extern void contig_e820_setup(void);
19	extern void e820_reserve_resources(void);
20	extern int e820_any_non_reserved(unsigned long start, unsigned long end);	19	extern int e820_any_non_reserved(unsigned long start, unsigned long end);
21	extern int is_memory_any_valid(unsigned long start, unsigned long end);	20	extern int is_memory_any_valid(unsigned long start, unsigned long end);
22	extern int e820_all_non_reserved(unsigned long start, unsigned long end);	21	extern int e820_all_non_reserved(unsigned long start, unsigned long end);