diff options
| author | Borislav Petkov <bp@suse.de> | 2013-03-01 17:07:44 +0100 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2013-03-04 16:23:56 +0100 |
| commit | 15b9c359f288b09003cb70f7ed204affc0c6614d (patch) | |
| tree | 57303057c296b330a3f543919f236f2a57bbb928 /arch/x86/platform | |
| parent | efivarfs: convert to use simple_open() (diff) | |
| download | linux-15b9c359f288b09003cb70f7ed204affc0c6614d.tar.xz linux-15b9c359f288b09003cb70f7ed204affc0c6614d.zip | |
x86, efi: Make efi_memblock_x86_reserve_range more readable
So basically this function copies EFI memmap stuff from boot_params into
the EFI memmap descriptor and reserves memory for it. Make it much more
readable.
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Matthew Garret <mjg59@srcf.ucam.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to 'arch/x86/platform')
| -rw-r--r-- | arch/x86/platform/efi/efi.c | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c index e075e474245b..430cd784a0de 100644 --- a/arch/x86/platform/efi/efi.c +++ b/arch/x86/platform/efi/efi.c @@ -350,24 +350,25 @@ static void __init do_add_efi_memmap(void) int __init efi_memblock_x86_reserve_range(void) { + struct efi_info *e = &boot_params.efi_info; unsigned long pmap; #ifdef CONFIG_X86_32 /* Can't handle data above 4GB at this time */ - if (boot_params.efi_info.efi_memmap_hi) { + if (e->efi_memmap_hi) { pr_err("Memory map is above 4GB, disabling EFI.\n"); return -EINVAL; } - pmap = boot_params.efi_info.efi_memmap; + pmap = e->efi_memmap; #else - pmap = (boot_params.efi_info.efi_memmap | - ((__u64)boot_params.efi_info.efi_memmap_hi<<32)); + pmap = (e->efi_memmap | ((__u64)e->efi_memmap_hi << 32)); #endif - memmap.phys_map = (void *)pmap; - memmap.nr_map = boot_params.efi_info.efi_memmap_size / - boot_params.efi_info.efi_memdesc_size; - memmap.desc_version = boot_params.efi_info.efi_memdesc_version; - memmap.desc_size = boot_params.efi_info.efi_memdesc_size; + memmap.phys_map = (void *)pmap; + memmap.nr_map = e->efi_memmap_size / + e->efi_memdesc_size; + memmap.desc_size = e->efi_memdesc_size; + memmap.desc_version = e->efi_memdesc_version; + memblock_reserve(pmap, memmap.nr_map * memmap.desc_size); return 0; |