d/patches: rcar: Add ATF overlay

The patch is needed to make sure that the reserved memory regions are
transfered to the linux FDT.

Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>

debian/patches/apertis/renesas/0077-renesas-rcar-Apply-ATF-overlay-for-reserved-memory.patch

+From: Detlev Casanova <detlev.casanova@collabora.com>
+Date: Tue, 6 Dec 2022 10:17:55 -0500
+Subject: renesas: rcar: Apply ATF overlay for reserved-memory
+
+The function fdtdec_board_setup() is called early and adds the overlay
+from ATF to the u-boot device tree. That is necessary so that u-boot
+doesn't use reserved memory.
+
+Linux also needs to know about that reserved memory so the overlay from
+ATF needs to be aplied on the linux device tree as well.
+
+This commit makes sure that the ATF overlay is applied to both device trees.
+
+Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
+---
+ board/renesas/rcar-common/common.c | 10 ++++++++--
+ 1 file changed, 8 insertions(+), 2 deletions(-)
+
+diff --git a/board/renesas/rcar-common/common.c b/board/renesas/rcar-common/common.c
+index daa1beb..903959c 100644
+--- a/board/renesas/rcar-common/common.c
++++ b/board/renesas/rcar-common/common.c
+@@ -25,12 +25,17 @@ extern u64 rcar_atf_boot_args[];
+ 
+ #define FDT_RPC_PATH	"/soc/spi@ee200000"
+ 
+-int fdtdec_board_setup(const void *fdt_blob)
++static void apply_atf_overlay(void *fdt_blob)
+ {
+ 	void *atf_fdt_blob = (void *)(rcar_atf_boot_args[1]);
+ 
+ 	if (fdt_magic(atf_fdt_blob) == FDT_MAGIC)
+-		fdt_overlay_apply_node((void *)fdt_blob, 0, atf_fdt_blob, 0);
++		fdt_overlay_apply_node(fdt_blob, 0, atf_fdt_blob, 0);
++}
++
++int fdtdec_board_setup(const void *fdt_blob)
++{
++	apply_atf_overlay((void *)fdt_blob);
+ 
+ 	return 0;
+ }
+@@ -159,6 +164,7 @@ static void update_rpc_status(void *blob)
+ 
+ int ft_board_setup(void *blob, struct bd_info *bd)
+ {
++	apply_atf_overlay(blob);
+ 	scrub_duplicate_memory(blob);
+ 	update_rpc_status(blob);
+ 

debian/patches/series

@@ -54,6 +54,7 @@ apertis/renesas/0003-renesas-enable-bootcount.patch
 apertis/renesas/0004-renesas-use-alternative-boot-for-rollback.patch
 apertis/renesas/0005-renesas-Disable-CMD_I2C-config-option.patch
 apertis/renesas/0058-Disable-CMD_SPI-config-option.patch
+apertis/renesas/0077-renesas-rcar-Apply-ATF-overlay-for-reserved-memory.patch
 
 # Patches for Renesas allowing to boot images with different FDT naming schemas
 apertis/renesas/0101-ARM-rcar_gen3-boot-with-legacy-FDT.patch