x86: sysreset: Implement the get_last() method

Add a default implementation of this method which always indicates that
the last reset was a power-on reset. This is the most likely type of reset
and without a PCH-specific driver we cannot determine any other type.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/sysreset/sysreset_x86.c b/drivers/sysreset/sysreset_x86.c
index ca892b305e286a96194491920ef416e09ef9247f..072f7948efa1be8aa7305b82c58fbc9df5a0e47b 100644 (file)
--- a/drivers/sysreset/sysreset_x86.c
+++ b/drivers/sysreset/sysreset_x86.c
@@ -98,6 +98,11 @@ static int x86_sysreset_request(struct udevice *dev, enum sysreset_t type)
        return -EINPROGRESS;
 }
 
+static int x86_sysreset_get_last(struct udevice *dev)
+{
+       return SYSRESET_POWER;
+}
+
 #ifdef CONFIG_EFI_LOADER
 void __efi_runtime EFIAPI efi_reset_system(
                        enum efi_reset_type reset_type,
@@ -140,6 +145,7 @@ static const struct udevice_id x86_sysreset_ids[] = {
 
 static struct sysreset_ops x86_sysreset_ops = {
        .request = x86_sysreset_request,
+       .get_last = x86_sysreset_get_last,
 };
 
 U_BOOT_DRIVER(x86_sysreset) = {