[PATCH V3 06/10] common: board_f: Pass frame buffer info from SPL to u-boot

[Nikhil M Jain]

When video is set up in SPL, U-Boot proper needs to use the correct
frame  buffer address to reserve particular location in memory, to avoid
displaying artifacts on the screen.

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 at ti.com>
---
V3 (patch introduced):
- Pass video buffer info from SPL to U-boot.

This patch depends on a patch sent by Simon Glass
https://lore.kernel.org/u-boot/20230504165823.v3.25.Ieb0824a81d8ad4109fa501c9497b01b8749f913a@changeid/

 common/board_f.c             | 13 ++++++++++++-
 drivers/video/video-uclass.c | 12 ++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/common/board_f.c b/common/board_f.c
index f3c1ab53b1..432195f79e 100644
--- a/common/board_f.c
+++ b/common/board_f.c
@@ -411,7 +411,17 @@ __weak int arch_reserve_mmu(void)
 
 static int reserve_video(void)
 {
-	if (IS_ENABLED(CONFIG_VIDEO)) {
+#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_blob(ho);
+		gd->relocaddr = ho->fb;
+	} else {
 		ulong addr;
 		int ret;
 
@@ -423,6 +433,7 @@ static int reserve_video(void)
 		      ((unsigned long)gd->relocaddr - addr) >> 10, addr);
 		gd->relocaddr = addr;
 	}
+#endif
 
 	return 0;
 }
diff --git a/drivers/video/video-uclass.c b/drivers/video/video-uclass.c
index 1264ad1101..324216b0f5 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;
 }
 
-- 
2.34.1