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Diffstat (limited to 'arch/x86/platform/efi/efi.c')
-rw-r--r--arch/x86/platform/efi/efi.c52
1 files changed, 23 insertions, 29 deletions
diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index 850da94fef30..dbc8627a5cdf 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -70,17 +70,7 @@ static efi_config_table_type_t arch_tables[] __initdata = {
u64 efi_setup; /* efi setup_data physical address */
-static bool disable_runtime __initdata = false;
-static int __init setup_noefi(char *arg)
-{
- disable_runtime = true;
- return 0;
-}
-early_param("noefi", setup_noefi);
-
-int add_efi_memmap;
-EXPORT_SYMBOL(add_efi_memmap);
-
+static int add_efi_memmap __initdata;
static int __init setup_add_efi_memmap(char *arg)
{
add_efi_memmap = 1;
@@ -96,7 +86,7 @@ static efi_status_t __init phys_efi_set_virtual_address_map(
{
efi_status_t status;
- efi_call_phys_prelog();
+ efi_call_phys_prolog();
status = efi_call_phys(efi_phys.set_virtual_address_map,
memory_map_size, descriptor_size,
descriptor_version, virtual_map);
@@ -210,9 +200,12 @@ static void __init print_efi_memmap(void)
for (p = memmap.map, i = 0;
p < memmap.map_end;
p += memmap.desc_size, i++) {
+ char buf[64];
+
md = p;
- pr_info("mem%02u: type=%u, attr=0x%llx, range=[0x%016llx-0x%016llx) (%lluMB)\n",
- i, md->type, md->attribute, md->phys_addr,
+ pr_info("mem%02u: %s range=[0x%016llx-0x%016llx) (%lluMB)\n",
+ i, efi_md_typeattr_format(buf, sizeof(buf), md),
+ md->phys_addr,
md->phys_addr + (md->num_pages << EFI_PAGE_SHIFT),
(md->num_pages >> (20 - EFI_PAGE_SHIFT)));
}
@@ -344,9 +337,9 @@ static int __init efi_runtime_init32(void)
}
/*
- * We will only need *early* access to the following two
- * EFI runtime services before set_virtual_address_map
- * is invoked.
+ * We will only need *early* access to the SetVirtualAddressMap
+ * EFI runtime service. All other runtime services will be called
+ * via the virtual mapping.
*/
efi_phys.set_virtual_address_map =
(efi_set_virtual_address_map_t *)
@@ -368,9 +361,9 @@ static int __init efi_runtime_init64(void)
}
/*
- * We will only need *early* access to the following two
- * EFI runtime services before set_virtual_address_map
- * is invoked.
+ * We will only need *early* access to the SetVirtualAddressMap
+ * EFI runtime service. All other runtime services will be called
+ * via the virtual mapping.
*/
efi_phys.set_virtual_address_map =
(efi_set_virtual_address_map_t *)
@@ -492,7 +485,7 @@ void __init efi_init(void)
if (!efi_runtime_supported())
pr_info("No EFI runtime due to 32/64-bit mismatch with kernel\n");
else {
- if (disable_runtime || efi_runtime_init())
+ if (efi_runtime_disabled() || efi_runtime_init())
return;
}
if (efi_memmap_init())
@@ -537,7 +530,7 @@ void __init runtime_code_page_mkexec(void)
}
}
-void efi_memory_uc(u64 addr, unsigned long size)
+void __init efi_memory_uc(u64 addr, unsigned long size)
{
unsigned long page_shift = 1UL << EFI_PAGE_SHIFT;
u64 npages;
@@ -732,6 +725,7 @@ static void __init kexec_enter_virtual_mode(void)
*/
if (!efi_is_native()) {
efi_unmap_memmap();
+ clear_bit(EFI_RUNTIME_SERVICES, &efi.flags);
return;
}
@@ -805,6 +799,7 @@ static void __init __efi_enter_virtual_mode(void)
new_memmap = efi_map_regions(&count, &pg_shift);
if (!new_memmap) {
pr_err("Error reallocating memory, EFI runtime non-functional!\n");
+ clear_bit(EFI_RUNTIME_SERVICES, &efi.flags);
return;
}
@@ -812,8 +807,10 @@ static void __init __efi_enter_virtual_mode(void)
BUG_ON(!efi.systab);
- if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift))
+ if (efi_setup_page_tables(__pa(new_memmap), 1 << pg_shift)) {
+ clear_bit(EFI_RUNTIME_SERVICES, &efi.flags);
return;
+ }
efi_sync_low_kernel_mappings();
efi_dump_pagetable();
@@ -938,14 +935,11 @@ u64 efi_mem_attributes(unsigned long phys_addr)
return 0;
}
-static int __init parse_efi_cmdline(char *str)
+static int __init arch_parse_efi_cmdline(char *str)
{
- if (*str == '=')
- str++;
-
- if (!strncmp(str, "old_map", 7))
+ if (parse_option_str(str, "old_map"))
set_bit(EFI_OLD_MEMMAP, &efi.flags);
return 0;
}
-early_param("efi", parse_efi_cmdline);
+early_param("efi", arch_parse_efi_cmdline);