[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>

1 files changed, 29 insertions, 0 deletions

diff --git a/arch/ia64/kernel/setup.c b/arch/ia64/kernel/setup.c
index 1658d687b79c..83b37c410ccd 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
  *