From d8bf49fa20bf1bf8b94e574a651e117da21a632c Mon Sep 17 00:00:00 2001
From: Simon Glass <sjg@chromium.org>
Date: Fri, 19 Nov 2021 13:24:05 -0700
Subject: [PATCH] video: Support virtio devices with the splash screen

This is useful for showing a logo when booting from qemu.

Signed-off-by: Simon Glass <sjg@chromium.org>
---
 common/splash_source.c | 14 ++++++++++++++
 include/splash.h       |  1 +
 include/virtio.h       |  1 +
 3 files changed, 16 insertions(+)

diff --git a/common/splash_source.c b/common/splash_source.c
index d05670f..2c03cbd 100644
--- a/common/splash_source.c
+++ b/common/splash_source.c
@@ -20,6 +20,7 @@
 #include <spi_flash.h>
 #include <splash.h>
 #include <usb.h>
+#include <virtio.h>
 #include <asm/global_data.h>
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -179,6 +180,16 @@ static inline int splash_init_sata(void)
 }
 #endif
 
+static int splash_init_virtio(void)
+{
+	if (!IS_ENABLED(CONFIG_VIRTIO)) {
+		printf("Cannot load splash image: no virtio support\n");
+		return -ENOSYS;
+	} else {
+		return virtio_init();
+	}
+}
+
 #ifdef CONFIG_CMD_UBIFS
 static int splash_mount_ubifs(struct splash_location *location)
 {
@@ -233,6 +244,9 @@ static int splash_load_fs(struct splash_location *location, u32 bmp_load_addr)
 	if (location->storage == SPLASH_STORAGE_SATA)
 		res = splash_init_sata();
 
+	if (location->storage == SPLASH_STORAGE_VIRTIO)
+		res = splash_init_virtio();
+
 	if (location->ubivol != NULL)
 		res = splash_mount_ubifs(location);
 
diff --git a/include/splash.h b/include/splash.h
index 7fd2de8..33e45e6 100644
--- a/include/splash.h
+++ b/include/splash.h
@@ -30,6 +30,7 @@ enum splash_storage {
 	SPLASH_STORAGE_MMC,
 	SPLASH_STORAGE_USB,
 	SPLASH_STORAGE_SATA,
+	SPLASH_STORAGE_VIRTIO,
 };
 
 enum splash_flags {
diff --git a/include/virtio.h b/include/virtio.h
index a42bdad..34e2bfd 100644
--- a/include/virtio.h
+++ b/include/virtio.h
@@ -20,6 +20,7 @@
 #ifndef __VIRTIO_H__
 #define __VIRTIO_H__
 
+#include <virtio_types.h>
 #include <linux/bitops.h>
 #include <linux/bug.h>
 #define VIRTIO_ID_NET		1 /* virtio net */
-- 
2.7.4