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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.c73
1 files changed, 42 insertions, 31 deletions
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 9035c1b74d58..3061bb8629dc 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -115,15 +115,24 @@ EFI_ATTR_SHOW(fw_vendor);
EFI_ATTR_SHOW(runtime);
EFI_ATTR_SHOW(config_table);
+static ssize_t fw_platform_size_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *buf)
+{
+ return sprintf(buf, "%d\n", efi_enabled(EFI_64BIT) ? 64 : 32);
+}
+
static struct kobj_attribute efi_attr_fw_vendor = __ATTR_RO(fw_vendor);
static struct kobj_attribute efi_attr_runtime = __ATTR_RO(runtime);
static struct kobj_attribute efi_attr_config_table = __ATTR_RO(config_table);
+static struct kobj_attribute efi_attr_fw_platform_size =
+ __ATTR_RO(fw_platform_size);
static struct attribute *efi_subsys_attrs[] = {
&efi_attr_systab.attr,
&efi_attr_fw_vendor.attr,
&efi_attr_runtime.attr,
&efi_attr_config_table.attr,
+ &efi_attr_fw_platform_size.attr,
NULL,
};
@@ -272,15 +281,10 @@ static __init int match_config_table(efi_guid_t *guid,
unsigned long table,
efi_config_table_type_t *table_types)
{
- u8 str[EFI_VARIABLE_GUID_LEN + 1];
int i;
if (table_types) {
- efi_guid_unparse(guid, str);
-
for (i = 0; efi_guidcmp(table_types[i].guid, NULL_GUID); i++) {
- efi_guid_unparse(&table_types[i].guid, str);
-
if (!efi_guidcmp(*guid, table_types[i].guid)) {
*(table_types[i].ptr) = table;
pr_cont(" %s=0x%lx ",
@@ -293,29 +297,15 @@ static __init int match_config_table(efi_guid_t *guid,
return 0;
}
-int __init efi_config_init(efi_config_table_type_t *arch_tables)
+int __init efi_config_parse_tables(void *config_tables, int count, int sz,
+ efi_config_table_type_t *arch_tables)
{
- void *config_tables, *tablep;
- int i, sz;
-
- if (efi_enabled(EFI_64BIT))
- sz = sizeof(efi_config_table_64_t);
- else
- sz = sizeof(efi_config_table_32_t);
-
- /*
- * Let's see what config tables the firmware passed to us.
- */
- config_tables = early_memremap(efi.systab->tables,
- efi.systab->nr_tables * sz);
- if (config_tables == NULL) {
- pr_err("Could not map Configuration table!\n");
- return -ENOMEM;
- }
+ void *tablep;
+ int i;
tablep = config_tables;
pr_info("");
- for (i = 0; i < efi.systab->nr_tables; i++) {
+ for (i = 0; i < count; i++) {
efi_guid_t guid;
unsigned long table;
@@ -328,8 +318,6 @@ 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_memunmap(config_tables,
- efi.systab->nr_tables * sz);
return -EINVAL;
}
#endif
@@ -344,13 +332,37 @@ int __init efi_config_init(efi_config_table_type_t *arch_tables)
tablep += sz;
}
pr_cont("\n");
- early_memunmap(config_tables, efi.systab->nr_tables * sz);
-
set_bit(EFI_CONFIG_TABLES, &efi.flags);
-
return 0;
}
+int __init efi_config_init(efi_config_table_type_t *arch_tables)
+{
+ void *config_tables;
+ int sz, ret;
+
+ if (efi_enabled(EFI_64BIT))
+ sz = sizeof(efi_config_table_64_t);
+ else
+ sz = sizeof(efi_config_table_32_t);
+
+ /*
+ * Let's see what config tables the firmware passed to us.
+ */
+ config_tables = early_memremap(efi.systab->tables,
+ efi.systab->nr_tables * sz);
+ if (config_tables == NULL) {
+ pr_err("Could not map Configuration table!\n");
+ return -ENOMEM;
+ }
+
+ ret = efi_config_parse_tables(config_tables, efi.systab->nr_tables, sz,
+ arch_tables);
+
+ early_memunmap(config_tables, efi.systab->nr_tables * sz);
+ return ret;
+}
+
#ifdef CONFIG_EFI_VARS_MODULE
static int __init efi_load_efivars(void)
{
@@ -403,8 +415,7 @@ static int __init fdt_find_uefi_params(unsigned long node, const char *uname,
u64 val;
int i, len;
- if (depth != 1 ||
- (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
+ if (depth != 1 || strcmp(uname, "chosen") != 0)
return 0;
for (i = 0; i < ARRAY_SIZE(dt_params); i++) {