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path: root/drivers/firmware/efi/efi.c
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Diffstat (limited to 'drivers/firmware/efi/efi.c')
-rw-r--r--drivers/firmware/efi/efi.c40
1 files changed, 29 insertions, 11 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index dc79346689e6..64ecbb501c50 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -23,6 +23,7 @@
#include <linux/of.h>
#include <linux/of_fdt.h>
#include <linux/io.h>
+#include <linux/platform_device.h>
struct efi __read_mostly efi = {
.mps = EFI_INVALID_TABLE_ADDR,
@@ -104,16 +105,19 @@ static struct attribute *efi_subsys_attrs[] = {
static umode_t efi_attr_is_visible(struct kobject *kobj,
struct attribute *attr, int n)
{
- umode_t mode = attr->mode;
-
- if (attr == &efi_attr_fw_vendor.attr)
- return (efi.fw_vendor == EFI_INVALID_TABLE_ADDR) ? 0 : mode;
- else if (attr == &efi_attr_runtime.attr)
- return (efi.runtime == EFI_INVALID_TABLE_ADDR) ? 0 : mode;
- else if (attr == &efi_attr_config_table.attr)
- return (efi.config_table == EFI_INVALID_TABLE_ADDR) ? 0 : mode;
+ if (attr == &efi_attr_fw_vendor.attr) {
+ if (efi_enabled(EFI_PARAVIRT) ||
+ efi.fw_vendor == EFI_INVALID_TABLE_ADDR)
+ return 0;
+ } else if (attr == &efi_attr_runtime.attr) {
+ if (efi.runtime == EFI_INVALID_TABLE_ADDR)
+ return 0;
+ } else if (attr == &efi_attr_config_table.attr) {
+ if (efi.config_table == EFI_INVALID_TABLE_ADDR)
+ return 0;
+ }
- return mode;
+ return attr->mode;
}
static struct attribute_group efi_subsys_attr_group = {
@@ -298,7 +302,7 @@ int __init efi_config_init(efi_config_table_type_t *arch_tables)
if (table64 >> 32) {
pr_cont("\n");
pr_err("Table located above 4GB, disabling EFI.\n");
- early_iounmap(config_tables,
+ early_memunmap(config_tables,
efi.systab->nr_tables * sz);
return -EINVAL;
}
@@ -314,13 +318,27 @@ int __init efi_config_init(efi_config_table_type_t *arch_tables)
tablep += sz;
}
pr_cont("\n");
- early_iounmap(config_tables, efi.systab->nr_tables * sz);
+ early_memunmap(config_tables, efi.systab->nr_tables * sz);
set_bit(EFI_CONFIG_TABLES, &efi.flags);
return 0;
}
+#ifdef CONFIG_EFI_VARS_MODULE
+static int __init efi_load_efivars(void)
+{
+ struct platform_device *pdev;
+
+ if (!efi_enabled(EFI_RUNTIME_SERVICES))
+ return 0;
+
+ pdev = platform_device_register_simple("efivars", 0, NULL, 0);
+ return IS_ERR(pdev) ? PTR_ERR(pdev) : 0;
+}
+device_initcall(efi_load_efivars);
+#endif
+
#ifdef CONFIG_EFI_PARAMS_FROM_FDT
#define UEFI_PARAM(name, prop, field) \