ti-sci-fw: k3-image-gen: Revert SPL address change for mainline

Commit 02a2433c ("ti-sci-fw: Update image gen to latest") switched to a
newer commit in k3-image-gen that also picked up TISCI firmware release,
However, does include a change where the SPL address changed.

This switch in address has been queued for upstream in a future release
(v5.14 + u-boot 2021.10) and current mainline formal tags do not support
this address change. As a result, we have a broken AM64x mainline
support.

Revert this specific change from k3-image-gen for mainline alone for
now.

NOTE: This uses ARAGO_BRAND=mainline which is NOT accurate for meta-ti
which is distro independent, hence without appropriate changes while
using alternate distros, this change will not take effect.

Reported-by: Tom Rini <trini@konsulko.com>
Suggested-by: Denys Dmytriyenko <denys@konsulko.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Denys Dmytriyenko <denys@konsulko.com>
Signed-off-by: Yogesh Siraswar <yogeshs@ti.com>

recipes-bsp/ti-sci-fw/files/0001-Revert-soc-am64x-Makefile-Move-the-SPL-Load-address-.patch

@@ -0,0 +1,36 @@
+From 83d29d5e346083254e71fbe483cb14f6657b9965 Mon Sep 17 00:00:00 2001
+From: Nishanth Menon <nm@ti.com>
+Date: Tue, 29 Jun 2021 12:03:29 -0500
+Subject: [PATCH] Revert "soc: am64x: Makefile: Move the SPL Load address to
+ 0x70000000"
+
+This reverts commit e411dc16862b5bb2d8befb12496b03d7b01c87b2.
+
+Mainline is NOT ready for the change yet as of u-boot 2021.07 + v5.13,
+So, this patch reverts the SPL address change.
+
+This patch needs to be dropped once mainline u-boot and kernel have
+migrated over to newer releases.
+
+Upstream-Status: Not applicable
+Signed-off-by: Nishanth Menon <nm@ti.com>
+---
+ soc/am64x/Makefile | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/soc/am64x/Makefile b/soc/am64x/Makefile
+index 45425428f9c6..e8747376f153 100644
+--- a/soc/am64x/Makefile
++++ b/soc/am64x/Makefile
+@@ -30,7 +30,7 @@
+ #  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ #
+ 
+-SBL_LOADADDDR ?= 0x70000000
++SBL_LOADADDDR ?= 0x70020000
+ COMBINED_SYSFW_BRDCFG_LOADADDR ?= 0x70000
+ LOADADDR  ?= 0x44000
+ SCIFS = sci
+-- 
+2.32.0
+

recipes-bsp/ti-sci-fw/ti-sci-fw.inc

@@ -15,4 +15,15 @@ SRC_URI = " \
 	git://git.ti.com/k3-image-gen/k3-image-gen.git;protocol=git;branch=master;destsuffix=imggen;name=imggen \
 "
 
+# This is a protection in case the definition is not present in other distros.
+ARAGO_BRAND ?= ""
+
+# Mainline u_boot 2021.07 and upstream kernel v5.13 tag cannot use new SPL address
+# in K3-Imagegen
+SRC_URI += "\
+	${@oe.utils.conditional('ARAGO_BRAND', 'mainline', '\
+	file://0001-Revert-soc-am64x-Makefile-Move-the-SPL-Load-address-.patch;patchdir=../imggen \
+	', '', d)} \
+"
+
 S = "${WORKDIR}/git"