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authorKhalid Aziz <khalid.aziz@hp.com>2005-09-19 15:42:36 -0700
committerTony Luck <tony.luck@intel.com>2005-09-19 15:42:36 -0700
commitbe379124c0a5abfbe57dab2823fe8a71ce797aee (patch)
treec16b8dce920a001431add24bcd12cc1f12bf824d
parentd8c97d5f3aa348272df2ccb4e224b1cf9a1eb6d7 (diff)
[IA64] include EFI memory information in /proc/iomem
User mode kexec tools expect to find information about physical memory in /proc/iomem (as they do on x86) to validate the addresses that the new kernel will use. Signed-off-by: Khalid Aziz <khalid.aziz@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
-rw-r--r--arch/ia64/kernel/efi.c87
-rw-r--r--arch/ia64/kernel/setup.c29
2 files changed, 116 insertions, 0 deletions
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 1291db58172..f72ea6aebcb 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -923,3 +923,90 @@ efi_memmap_init(unsigned long *s, unsigned long *e)
*s = (u64)kern_memmap;
*e = (u64)++k;
}
+
+void
+efi_initialize_iomem_resources(struct resource *code_resource,
+ struct resource *data_resource)
+{
+ struct resource *res;
+ void *efi_map_start, *efi_map_end, *p;
+ efi_memory_desc_t *md;
+ u64 efi_desc_size;
+ char *name;
+ unsigned long flags;
+
+ efi_map_start = __va(ia64_boot_param->efi_memmap);
+ efi_map_end = efi_map_start + ia64_boot_param->efi_memmap_size;
+ efi_desc_size = ia64_boot_param->efi_memdesc_size;
+
+ res = NULL;
+
+ for (p = efi_map_start; p < efi_map_end; p += efi_desc_size) {
+ md = p;
+
+ if (md->num_pages == 0) /* should not happen */
+ continue;
+
+ flags = IORESOURCE_MEM;
+ switch (md->type) {
+
+ case EFI_MEMORY_MAPPED_IO:
+ case EFI_MEMORY_MAPPED_IO_PORT_SPACE:
+ continue;
+
+ case EFI_LOADER_CODE:
+ case EFI_LOADER_DATA:
+ case EFI_BOOT_SERVICES_DATA:
+ case EFI_BOOT_SERVICES_CODE:
+ case EFI_CONVENTIONAL_MEMORY:
+ if (md->attribute & EFI_MEMORY_WP) {
+ name = "System ROM";
+ flags |= IORESOURCE_READONLY;
+ } else {
+ name = "System RAM";
+ }
+ break;
+
+ case EFI_ACPI_MEMORY_NVS:
+ name = "ACPI Non-volatile Storage";
+ flags |= IORESOURCE_BUSY;
+ break;
+
+ case EFI_UNUSABLE_MEMORY:
+ name = "reserved";
+ flags |= IORESOURCE_BUSY | IORESOURCE_DISABLED;
+ break;
+
+ case EFI_RESERVED_TYPE:
+ case EFI_RUNTIME_SERVICES_CODE:
+ case EFI_RUNTIME_SERVICES_DATA:
+ case EFI_ACPI_RECLAIM_MEMORY:
+ default:
+ name = "reserved";
+ flags |= IORESOURCE_BUSY;
+ break;
+ }
+
+ if ((res = kcalloc(1, sizeof(struct resource), GFP_KERNEL)) == NULL) {
+ printk(KERN_ERR "failed to alocate resource for iomem\n");
+ return;
+ }
+
+ res->name = name;
+ res->start = md->phys_addr;
+ res->end = md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT) - 1;
+ res->flags = flags;
+
+ if (insert_resource(&iomem_resource, res) < 0)
+ kfree(res);
+ else {
+ /*
+ * We don't know which region contains
+ * kernel data so we try it repeatedly and
+ * let the resource manager test it.
+ */
+ insert_resource(res, code_resource);
+ insert_resource(res, data_resource);
+ }
+ }
+}
diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 1658d687b79..83b37c410cc 100644
--- a/arch/ia64/kernel/setup.c
+++ b/arch/ia64/kernel/setup.c
@@ -78,6 +78,19 @@ struct screen_info screen_info;
unsigned long vga_console_iobase;
unsigned long vga_console_membase;
+static struct resource data_resource = {
+ .name = "Kernel data",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+
+static struct resource code_resource = {
+ .name = "Kernel code",
+ .flags = IORESOURCE_BUSY | IORESOURCE_MEM
+};
+extern void efi_initialize_iomem_resources(struct resource *,
+ struct resource *);
+extern char _text[], _edata[], _etext[];
+
unsigned long ia64_max_cacheline_size;
unsigned long ia64_iobase; /* virtual address for I/O accesses */
EXPORT_SYMBOL(ia64_iobase);
@@ -171,6 +184,22 @@ sort_regions (struct rsvd_region *rsvd_region, int max)
}
}
+/*
+ * Request address space for all standard resources
+ */
+static int __init register_memory(void)
+{
+ code_resource.start = ia64_tpa(_text);
+ code_resource.end = ia64_tpa(_etext) - 1;
+ data_resource.start = ia64_tpa(_etext);
+ data_resource.end = ia64_tpa(_edata) - 1;
+ efi_initialize_iomem_resources(&code_resource, &data_resource);
+
+ return 0;
+}
+
+__initcall(register_memory);
+
/**
* reserve_memory - setup reserved memory areas
*