From 5bc610a7d9d1ea1b83aaab7ca54ef847087d7167 Mon Sep 17 00:00:00 2001
From: Nikhil M Jain <n-jain1@ti.com>
Date: Tue, 18 Jul 2023 14:27:31 +0530
Subject: [PATCH] common: board_f: Pass frame buffer info from SPL to u-boot

U-boot proper can use frame buffer address passed from SPL to reserve
the memory area used by framebuffer set in SPL so that splash image
set in SPL continues to get displayed while u-boot proper is running.

Put the framebuffer address and size in a bloblist to make them
available at u-boot proper, if in u-boot proper CONFIG_VIDEO is defined.

Signed-off-by: Nikhil M Jain <n-jain1@ti.com>
Reviewed-by: Devarsh Thakkar <devarsht@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
---
 common/board_f.c             | 11 ++++++++++-
 drivers/video/video-uclass.c | 12 ++++++++++++
 2 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/common/board_f.c b/common/board_f.c
index e5969ec..7d2c380 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -411,7 +411,16 @@ __weak int arch_reserve_mmu(void)
 
 static int reserve_video(void)
 {
-	if (IS_ENABLED(CONFIG_VIDEO)) {
+	if (IS_ENABLED(CONFIG_SPL_VIDEO) && spl_phase() > PHASE_SPL &&
+	    CONFIG_IS_ENABLED(BLOBLIST)) {
+		struct video_handoff *ho;
+
+		ho = bloblist_find(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho));
+		if (!ho)
+			return log_msg_ret("blf", -ENOENT);
+		video_reserve_from_bloblist(ho);
+		gd->relocaddr = ho->fb;
+	} else if (CONFIG_IS_ENABLED(VIDEO)) {
 		ulong addr;
 		int ret;
 
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 435dab1..949595f 100644
--- a/drivers/video/video-uclass.c
+++ b/drivers/video/video-uclass.c
@@ -6,12 +6,14 @@
 #define LOG_CATEGORY UCLASS_VIDEO
 
 #include <common.h>
+#include <bloblist.h>
 #include <console.h>
 #include <cpu_func.h>
 #include <dm.h>
 #include <log.h>
 #include <malloc.h>
 #include <mapmem.h>
+#include <spl.h>
 #include <stdio_dev.h>
 #include <video.h>
 #include <video_console.h>
@@ -139,6 +141,16 @@ int video_reserve(ulong *addrp)
 	debug("Video frame buffers from %lx to %lx\n", gd->video_bottom,
 	      gd->video_top);
 
+	if (spl_phase() == PHASE_SPL && CONFIG_IS_ENABLED(BLOBLIST)) {
+		struct video_handoff *ho;
+
+		ho = bloblist_add(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho), 0);
+		if (!ho)
+			return log_msg_ret("blf", -ENOENT);
+		ho->fb = *addrp;
+		ho->size = size;
+	}
+
 	return 0;
 }
 
-- 
2.7.4