From 50c6509ee017c87cf59c450e670b2196af7f31e1 Mon Sep 17 00:00:00 2001
From: Steven Shiau <steven@stevenshiau.org>
Date: Fri, 8 Nov 2024 08:02:53 +0800
Subject: [PATCH] Add the support for riscv64 arch.

---
 scripts/build/binary_grub-efi            | 16 +++++++++++++++-
 scripts/build/installer_debian-installer | 12 +++++++++---
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/scripts/build/binary_grub-efi b/scripts/build/binary_grub-efi
index 41a8c526e..7eb86ec7f 100755
--- a/scripts/build/binary_grub-efi
+++ b/scripts/build/binary_grub-efi
@@ -54,6 +54,9 @@ case "${LB_ARCHITECTURE}" in
 	armhf)
 		Check_package chroot /usr/lib/grub/arm-efi/configfile.mod grub-efi-arm-bin
 		;;
+	riscv64)
+		Check_package chroot /usr/lib/grub/riscv64-efi/configfile.mod grub-efi-riscv64-bin
+		;;
 esac
 Check_package chroot /usr/bin/grub-mkimage grub-common
 Check_package chroot /usr/bin/mcopy mtools
@@ -83,6 +86,11 @@ case "${LB_ARCHITECTURE}" in
 		_SB_EFI_NAME="arm"
 		_SB_EFI_DEB="arm"
 		;;
+	riscv64)
+		_SB_EFI_PLATFORM="riscv64"
+		_SB_EFI_NAME="riscv64"
+		_SB_EFI_DEB="riscv64"
+		;;
 esac
 
 # Restoring cache
@@ -136,7 +144,7 @@ case "${LB_UEFI_SECURE_BOOT}" in
 esac
 
 # Cleanup files that we generate
-rm -rf binary/boot/efi.img binary/boot/grub/i386-efi/ binary/boot/grub/x86_64-efi binary/boot/grub/arm64-efi binary/boot/grub/arm-efi
+rm -rf binary/boot/efi.img binary/boot/grub/i386-efi/ binary/boot/grub/x86_64-efi binary/boot/grub/arm64-efi binary/boot/grub/arm-efi binary/boot/grub/riscv64
 
 # This is workaround till both efi-image and grub-cpmodules are put into a binary package
 case "${LB_BUILD_WITH_CHROOT}" in
@@ -243,6 +251,10 @@ case "${LB_ARCHITECTURE}" in
 		gen_efi_boot_img "arm-efi" "arm" "debian-live/arm"
 		PATH="\${PRE_EFI_IMAGE_PATH}"
 		;;
+	riscv64)
+		gen_efi_boot_img "riscv64-efi" "riscv64" "debian-live/riscv64"
+		PATH="\${PRE_EFI_IMAGE_PATH}"
+		;;
 esac
 
 
@@ -324,6 +336,7 @@ rm -f chroot/grub-efi-temp/bootnetia32.efi
 rm -f chroot/grub-efi-temp/bootnetx64.efi
 rm -f chroot/grub-efi-temp/bootnetaa64.efi
 rm -f chroot/grub-efi-temp/bootnetarm.efi
+rm -f chroot/grub-efi-temp/bootnetriscv64.efi
 
 mkdir -p binary
 cp -a chroot/grub-efi-temp/* binary/
@@ -331,6 +344,7 @@ rm -rf chroot/grub-efi-temp-x86_64-efi
 rm -rf chroot/grub-efi-temp-i386-efi
 rm -rf chroot/grub-efi-temp-arm64-efi
 rm -rf chroot/grub-efi-temp-arm-efi
+rm -rf chroot/grub-efi-temp-riscv64-efi
 rm -rf chroot/grub-efi-temp-cfg
 rm -rf chroot/grub-efi-temp
 
diff --git a/scripts/build/installer_debian-installer b/scripts/build/installer_debian-installer
index 96ee4a4c5..e8f650094 100755
--- a/scripts/build/installer_debian-installer
+++ b/scripts/build/installer_debian-installer
@@ -106,7 +106,7 @@ case "${LB_ARCHITECTURE}" in
 		DI_REMOTE_BASE_GTK="${DI_REMOTE_BASE}/gtk"
 		;;
 
-	powerpc)
+	powerpc|riscv64)
 		case "${DI_IMAGE_TYPE}" in
 			cdrom)
 				DI_REMOTE_BASE="${LB_ARCHITECTURE}/cdrom"
@@ -267,7 +267,7 @@ case "${LB_DERIVATIVE}" in
 
 				# Set architecture-specific variables
 				case "${LB_ARCHITECTURE}" in
-					arm64)
+					arm64|riscv64)
 						TARGETS="build_cdrom_gtk build_cdrom_grub"
 						;;
 
@@ -365,7 +365,7 @@ DOWNLOAD_GTK_INSTALLER=false
 if [ "${LB_DEBIAN_INSTALLER_GUI}" = "true" ]
 then
 	case "${LB_ARCHITECTURE}" in
-		amd64|i386|arm64)
+		amd64|i386|arm64|riscv64)
 			DOWNLOAD_GTK_INSTALLER=true
 			;;
 
@@ -437,6 +437,12 @@ then
 			DI_REQ_PACKAGES="yaboot"
 			DI_PACKAGES="linux-image-powerpc linux-image-powerpc64 linux-image-powerpc-smp"
 			;;
+
+		riscv64)
+			DI_REQ_PACKAGES="grub-efi-riscv64 efibootmgr" # UEFI (required for d-i, includes suggested packages)
+			DI_REQ_PACKAGES="${DI_REQ_PACKAGES} grub-efi grub-efi-riscv64-bin grub2-common grub-efi-riscv64-unsigned" # UEFI (required by Calamares)
+			DI_PACKAGES="linux-image-riscv64"
+			;;
 	esac
 
 	DI_PACKAGES="${DI_PACKAGES} busybox cryptsetup mdadm lvm2 xfsprogs jfsutils"