x86 boot: use E820 memory map on EFI 32 platform

Because the EFI memory map are converted to e820 memory map in bootloader, the
EFI memory map handling code is removed to clean up.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Andi Kleen <ak@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 0 insertions, 150 deletions

diff --git a/arch/x86/kernel/efi_32.c b/arch/x86/kernel/efi_32.c
index 1df13725e519..30f937116288 100644
--- a/arch/x86/kernel/efi_32.c
+++ b/arch/x86/kernel/efi_32.c
@@ -125,22 +125,6 @@ void efi_call_phys_epilog(void) __releases(efi_rt_lock)
         spin_unlock(&efi_rt_lock);
 }
 
-int is_available_memory(efi_memory_desc_t * md)
-{
-        if (!(md->attribute & EFI_MEMORY_WB))
-                return 0;
-
-        switch (md->type) {
-                case EFI_LOADER_CODE:
-                case EFI_LOADER_DATA:
-                case EFI_BOOT_SERVICES_CODE:
-                case EFI_BOOT_SERVICES_DATA:
-                case EFI_CONVENTIONAL_MEMORY:
-                        return 1;
-        }
-        return 0;
-}
-
 /*
  * We need to map the EFI memory map again after paging_init().
  */
@@ -155,137 +139,3 @@ void __init efi_map_memmap(void)
 
         memmap.map_end = memmap.map + (memmap.nr_map * memmap.desc_size);
 }
-
-/*
- * Walks the EFI memory map and calls CALLBACK once for each EFI
- * memory descriptor that has memory that is available for kernel use.
- */
-void efi_memmap_walk(efi_freemem_callback_t callback, void *arg)
-{
-        int prev_valid = 0;
-        struct range {
-                unsigned long start;
-                unsigned long end;
-        } uninitialized_var(prev), curr;
-        efi_memory_desc_t *md;
-        unsigned long start, end;
-        void *p;
-
-        for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
-                md = p;
-
-                if ((md->num_pages == 0) || (!is_available_memory(md)))
-                        continue;
-
-                curr.start = md->phys_addr;
-                curr.end = curr.start + (md->num_pages << EFI_PAGE_SHIFT);
-
-                if (!prev_valid) {
-                        prev = curr;
-                        prev_valid = 1;
-                } else {
-                        if (curr.start < prev.start)
-                                printk(KERN_INFO PFX "Unordered memory map\n");
-                        if (prev.end == curr.start)
-                                prev.end = curr.end;
-                        else {
-                                start =
-                                    (unsigned long) (PAGE_ALIGN(prev.start));
-                                end = (unsigned long) (prev.end & PAGE_MASK);
-                                if ((end > start)
-                                    && (*callback) (start, end, arg) < 0)
-                                        return;
-                                prev = curr;
-                        }
-                }
-        }
-        if (prev_valid) {
-                start = (unsigned long) PAGE_ALIGN(prev.start);
-                end = (unsigned long) (prev.end & PAGE_MASK);
-                if (end > start)
-                        (*callback) (start, end, arg);
-        }
-}
-
-void __init
-efi_initialize_iomem_resources(struct resource *code_resource,
-                               struct resource *data_resource,
-                               struct resource *bss_resource)
-{
-        struct resource *res;
-        efi_memory_desc_t *md;
-        void *p;
-
-        for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
-                md = p;
-
-                if ((md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT)) >
-                    0x100000000ULL)
-                        continue;
-                res = kzalloc(sizeof(struct resource), GFP_ATOMIC);
-                switch (md->type) {
-                case EFI_RESERVED_TYPE:
-                        res->name = "Reserved Memory";
-                        break;
-                case EFI_LOADER_CODE:
-                        res->name = "Loader Code";
-                        break;
-                case EFI_LOADER_DATA:
-                        res->name = "Loader Data";
-                        break;
-                case EFI_BOOT_SERVICES_DATA:
-                        res->name = "BootServices Data";
-                        break;
-                case EFI_BOOT_SERVICES_CODE:
-                        res->name = "BootServices Code";
-                        break;
-                case EFI_RUNTIME_SERVICES_CODE:
-                        res->name = "Runtime Service Code";
-                        break;
-                case EFI_RUNTIME_SERVICES_DATA:
-                        res->name = "Runtime Service Data";
-                        break;
-                case EFI_CONVENTIONAL_MEMORY:
-                        res->name = "Conventional Memory";
-                        break;
-                case EFI_UNUSABLE_MEMORY:
-                        res->name = "Unusable Memory";
-                        break;
-                case EFI_ACPI_RECLAIM_MEMORY:
-                        res->name = "ACPI Reclaim";
-                        break;
-                case EFI_ACPI_MEMORY_NVS:
-                        res->name = "ACPI NVS";
-                        break;
-                case EFI_MEMORY_MAPPED_IO:
-                        res->name = "Memory Mapped IO";
-                        break;
-                case EFI_MEMORY_MAPPED_IO_PORT_SPACE:
-                        res->name = "Memory Mapped IO Port Space";
-                        break;
-                default:
-                        res->name = "Reserved";
-                        break;
-                }
-                res->start = md->phys_addr;
-                res->end = res->start + ((md->num_pages << EFI_PAGE_SHIFT) - 1);
-                res->flags = IORESOURCE_MEM | IORESOURCE_BUSY;
-                if (request_resource(&iomem_resource, res) < 0)
-                        printk(KERN_ERR PFX "Failed to allocate res %s : "
-                                "0x%llx-0x%llx\n", res->name,
-                                (unsigned long long)res->start,
-                                (unsigned long long)res->end);
-                /*
-                 * We don't know which region contains kernel data so we try
-                 * it repeatedly and let the resource manager test it.
-                 */
-                if (md->type == EFI_CONVENTIONAL_MEMORY) {
-                        request_resource(res, code_resource);
-                        request_resource(res, data_resource);
-                        request_resource(res, bss_resource);
-#ifdef CONFIG_KEXEC
-                        request_resource(res, &crashk_res);
-#endif
-                }
-        }
-}