efi/efi_test: add exporting ResetSystem runtime service

Add exporting the UEFI runtime service ResetSystem for upper application or test
tools to use.

Signed-off-by: Ivan Hu <ivan.hu@canonical.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>

diff --git a/drivers/firmware/efi/test/efi_test.c b/drivers/firmware/efi/test/efi_test.c
index 41c48a1e8baaa8e46e9609c0b76a2698b5ac5c49..769640940c9fc86dff2ce107e3500aeb6a33f93f 100644 (file)
--- a/drivers/firmware/efi/test/efi_test.c
+++ b/drivers/firmware/efi/test/efi_test.c
@@ -542,6 +542,30 @@ static long efi_runtime_get_nexthighmonocount(unsigned long arg)
        return 0;
 }
 
+static long efi_runtime_reset_system(unsigned long arg)
+{
+       struct efi_resetsystem __user *resetsystem_user;
+       struct efi_resetsystem resetsystem;
+       void *data = NULL;
+
+       resetsystem_user = (struct efi_resetsystem __user *)arg;
+       if (copy_from_user(&resetsystem, resetsystem_user,
+                                               sizeof(resetsystem)))
+               return -EFAULT;
+       if (resetsystem.data_size != 0) {
+               data = memdup_user((void *)resetsystem.data,
+                                               resetsystem.data_size);
+               if (IS_ERR(data))
+                       return PTR_ERR(data);
+       }
+
+       efi.reset_system(resetsystem.reset_type, resetsystem.status,
+                               resetsystem.data_size, (efi_char16_t *)data);
+
+       kfree(data);
+       return 0;
+}
+
 static long efi_runtime_query_variableinfo(unsigned long arg)
 {
        struct efi_queryvariableinfo __user *queryvariableinfo_user;
@@ -682,6 +706,9 @@ static long efi_test_ioctl(struct file *file, unsigned int cmd,
 
        case EFI_RUNTIME_QUERY_CAPSULECAPABILITIES:
                return efi_runtime_query_capsulecaps(arg);
+
+       case EFI_RUNTIME_RESET_SYSTEM:
+               return efi_runtime_reset_system(arg);
        }
 
        return -ENOTTY;

diff --git a/drivers/firmware/efi/test/efi_test.h b/drivers/firmware/efi/test/efi_test.h
index 9812c6a02b40082b44807529d8c7093d6852675b..5f4818bf112f0de741d2482598eefc77a4e74f44 100644 (file)
--- a/drivers/firmware/efi/test/efi_test.h
+++ b/drivers/firmware/efi/test/efi_test.h
@@ -81,6 +81,13 @@ struct efi_querycapsulecapabilities {
        efi_status_t            *status;
 } __packed;
 
+struct efi_resetsystem {
+       int                     reset_type;
+       efi_status_t            status;
+       unsigned long           data_size;
+       efi_char16_t            *data;
+} __packed;
+
 #define EFI_RUNTIME_GET_VARIABLE \
        _IOWR('p', 0x01, struct efi_getvariable)
 #define EFI_RUNTIME_SET_VARIABLE \
@@ -108,4 +115,7 @@ struct efi_querycapsulecapabilities {
 #define EFI_RUNTIME_QUERY_CAPSULECAPABILITIES \
        _IOR('p', 0x0A, struct efi_querycapsulecapabilities)
 
+#define EFI_RUNTIME_RESET_SYSTEM \
+       _IOW('p', 0x0B, struct efi_resetsystem)
+
 #endif /* _DRIVERS_FIRMWARE_EFI_TEST_H_ */