[PATCH 1/4] boot: fdt_simplefb: Enumerate framebuffer info from video handoff

[Devarsh Thakkar]

Enable and update simple-framebuffer node using the video handoff
bloblist if video was enabled at SPL stage and corresponding video
bloblist was received at u-boot proper with necessary parameters.

Signed-off-by: Devarsh Thakkar <devarsht at ti.com>
---
 boot/fdt_simplefb.c | 34 +++++++++++++++++++++++++---------
 1 file changed, 25 insertions(+), 9 deletions(-)

diff --git a/boot/fdt_simplefb.c b/boot/fdt_simplefb.c
index 069ced75a7..b0221eaf2a 100644
--- a/boot/fdt_simplefb.c
+++ b/boot/fdt_simplefb.c
@@ -12,6 +12,8 @@
 #include <asm/global_data.h>
 #include <linux/libfdt.h>
 #include <video.h>
+#include <spl.h>
+#include <bloblist.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -26,15 +28,29 @@ static int fdt_simplefb_configure_node(void *blob, int off)
 	struct udevice *dev;
 	int ret;
 
-	ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
-	if (ret)
-		return ret;
-	uc_priv = dev_get_uclass_priv(dev);
-	plat = dev_get_uclass_plat(dev);
-	xsize = uc_priv->xsize;
-	ysize = uc_priv->ysize;
-	bpix = uc_priv->bpix;
-	fb_base = plat->base;
+	if (IS_ENABLED(CONFIG_SPL_VIDEO_HANDOFF) && spl_phase() > PHASE_SPL) {
+		struct video_handoff *ho;
+
+		ho = bloblist_find(BLOBLISTT_U_BOOT_VIDEO, sizeof(*ho));
+		if (!ho)
+			return log_msg_ret("Missing video bloblist", -ENOENT);
+
+		xsize = ho->xsize;
+		ysize = ho->ysize;
+		bpix = ho->bpix;
+		fb_base = ho->fb;
+	} else {
+		ret = uclass_first_device_err(UCLASS_VIDEO, &dev);
+		if (ret)
+			return ret;
+		uc_priv = dev_get_uclass_priv(dev);
+		plat = dev_get_uclass_plat(dev);
+		xsize = uc_priv->xsize;
+		ysize = uc_priv->ysize;
+		bpix = uc_priv->bpix;
+		fb_base = plat->base;
+	}
+
 	switch (bpix) {
 	case 4: /* VIDEO_BPP16 */
 		name = "r5g6b5";
-- 
2.34.1