summaryrefslogtreecommitdiffstats
path: root/arch/x86/platform
diff options
context:
space:
mode:
authorLeif Lindholm <leif.lindholm@linaro.org>2013-09-05 11:34:55 +0100
committerMatt Fleming <matt.fleming@intel.com>2013-09-05 13:29:29 +0100
commit258f6fd738221766b512cd8c7120563b78d62829 (patch)
treef2796181d313ef0cb9f0d516fd6a63e910d8b9a7 /arch/x86/platform
parent272686bf46a34f86d270cf192f68769667792026 (diff)
downloadlinux-258f6fd738221766b512cd8c7120563b78d62829.tar.bz2
efi: x86: make efi_lookup_mapped_addr() a common function
efi_lookup_mapped_addr() is a handy utility for other platforms than x86. Move it from arch/x86 to drivers/firmware. Add memmap pointer to global efi structure, and initialise it on x86. Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org> Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86/platform')
-rw-r--r--arch/x86/platform/efi/efi.c30
1 files changed, 2 insertions, 28 deletions
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index ed2be58ea3f1..fbc1d70188f8 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -393,6 +393,8 @@ int __init efi_memblock_x86_reserve_range(void)
memblock_reserve(pmap, memmap.nr_map * memmap.desc_size);
+ efi.memmap = &memmap;
+
return 0;
}
@@ -736,34 +738,6 @@ static void __init runtime_code_page_mkexec(void)
}
}
-/*
- * We can't ioremap data in EFI boot services RAM, because we've already mapped
- * it as RAM. So, look it up in the existing EFI memory map instead. Only
- * callable after efi_enter_virtual_mode and before efi_free_boot_services.
- */
-void __iomem *efi_lookup_mapped_addr(u64 phys_addr)
-{
- void *p;
- if (WARN_ON(!memmap.map))
- return NULL;
- for (p = memmap.map; p < memmap.map_end; p += memmap.desc_size) {
- efi_memory_desc_t *md = p;
- u64 size = md->num_pages << EFI_PAGE_SHIFT;
- u64 end = md->phys_addr + size;
- if (!(md->attribute & EFI_MEMORY_RUNTIME) &&
- md->type != EFI_BOOT_SERVICES_CODE &&
- md->type != EFI_BOOT_SERVICES_DATA)
- continue;
- if (!md->virt_addr)
- continue;
- if (phys_addr >= md->phys_addr && phys_addr < end) {
- phys_addr += md->virt_addr - md->phys_addr;
- return (__force void __iomem *)(unsigned long)phys_addr;
- }
- }
- return NULL;
-}
-
void efi_memory_uc(u64 addr, unsigned long size)
{
unsigned long page_shift = 1UL << EFI_PAGE_SHIFT;