From 3511e1e3fbfefa678de083297d8f2a70bab485d2 Mon Sep 17 00:00:00 2001
From: Marek Vasut <marek.vasut+renesas@mailbox.org>
Date: Sun, 9 Aug 2026 03:41:41 +0200
Subject: arm64: renesas: r8a779g3: Add bootloader update environment on
 Retronix R-Car V4H Sparrow Hawk

Add bootloader update environment to Retronix R-Car V4H Sparrow Hawk.
The "update_loader_from_{mmc,nvme,usb}" script updates U-Boot "flash.bin"
in SPI NOR at offset 0x0 from SD card, NVMe SSD and USB mass storage
device respectively. Each script sets up parameters for the generic
update script "update_loader_from_blk", which can be used to update
the "flash.bin" from any block device. The parameters are these:
- renesas_update_loader_iface ....... Update block device (mmc, nvme, usb, ...)
- renesas_update_loader_dev ......... Update block device number (0, 1, ...)
- renesas_update_loader_part ........ Update block device partition (1, 2, ...)
- renesas_update_loader_filename .... Update file name (flash.bin)
- renesas_update_loader_sf_offset ... SPI NOR target offset (0x0)

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
 include/configs/sparrowhawk.h | 33 ++++++++++++++++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/include/configs/sparrowhawk.h b/include/configs/sparrowhawk.h
index 731455c9d8e..e6e18bc97b0 100644
--- a/include/configs/sparrowhawk.h
+++ b/include/configs/sparrowhawk.h
@@ -31,6 +31,37 @@
 		"sf probe && "						\
 		"sf update ${loadaddr} "				\
 			"${renesas_rcar_gen4_pcie_firmware_sf_offset} "	\
-			"${filesize}\0"
+			"${filesize}\0" \
+	\
+	"renesas_update_loader_iface=mmc\0"				\
+	"renesas_update_loader_dev=0\0"					\
+	"renesas_update_loader_part=1\0"				\
+	"renesas_update_loader_sf_offset=0x0\0"				\
+	"renesas_update_loader_filename=flash.bin\0"			\
+	"update_loader_from_blk="					\
+		"load ${renesas_update_loader_iface} "			\
+			"${renesas_update_loader_dev}:${renesas_update_loader_part} "  \
+			"${loadaddr} "					\
+			"${renesas_update_loader_filename} && "		\
+		"sf probe && "						\
+		"sf update ${loadaddr} "				\
+			"${renesas_update_loader_sf_offset} "		\
+			"${filesize} && "				\
+		"reset\0"						\
+	"update_loader_from_blk01="					\
+		"env set renesas_update_loader_dev 0 && "		\
+		"env set renesas_update_loader_part 1 && "		\
+		"run update_loader_from_blk\0"				\
+	"update_loader_from_mmc="					\
+		"env set renesas_update_loader_iface mmc && "		\
+		"run update_loader_from_blk01\0"			\
+	"update_loader_from_nvme="					\
+		"pci enum && nvme scan && "				\
+		"env set renesas_update_loader_iface nvme && "		\
+		"run update_loader_from_blk01\0"			\
+	"update_loader_from_usb="					\
+		"pci enum && usb start && "				\
+		"env set renesas_update_loader_iface usb && "		\
+		"run update_loader_from_blk01\0"
 
 #endif /* __SPARROWHAWK_H */
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