From ed895db95d8a50e4c03d736863c3a6aa16ad0dc9 Mon Sep 17 00:00:00 2001
From: aqua <aqua@iserlohn-fortress.net>
Date: Sat, 5 Nov 2022 22:05:12 +0200
Subject: Add sha512sum checksum to grub

---
 Makefile      | 5 +++++
 grub/grub.cfg | 1 +
 2 files changed, 6 insertions(+)

diff --git a/Makefile b/Makefile
index ffb4e2e..9e781b3 100644
--- a/Makefile
+++ b/Makefile
@@ -49,6 +49,8 @@ src/kernel.a: FORCE
 glitch.elf: ${ARCH}/arch.a src/kernel.a devices/devs.a lib/libk.a
 	@echo '  LD   $@'
 	@${LD} ${LDFLAGS} -T ${ARCH}/linker.ld -o $@ $^
+	@echo -n '  B2b  '
+	@b2sum $@ | cut -d ' ' -f1
 
 glitch.iso: glitch.elf grub/grub.cfg
 	@grub-file --is-x86-multiboot2 glitch.elf
@@ -58,5 +60,8 @@ glitch.iso: glitch.elf grub/grub.cfg
 	@cp grub/grub.cfg isodir/boot/grub/grub.cfg
 	@cp glitch.elf isodir/boot/glitch/glitch.elf
 	@${STRIP} isodir/boot/glitch/glitch.elf
+	@rm -f isodir/boot/glitch/checksums
+	@sha512sum isodir/boot/glitch/* > isodir/boot/glitch/checksums
+	@sed -i s/isodir// isodir/boot/glitch/checksums
 	@grub-mkrescue -o glitch.iso isodir
 
diff --git a/grub/grub.cfg b/grub/grub.cfg
index bd7c5fb..bb965e1 100644
--- a/grub/grub.cfg
+++ b/grub/grub.cfg
@@ -2,6 +2,7 @@ set timeout=0
 set default=0
 
 menuentry "glitch" {
+    sha512sum -c /boot/glitch/checksums
     multiboot2 /boot/glitch/glitch.elf quiet
     boot
 }
-- 
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