From 7c031f95e44f49dcb298168672c943ce62e4884a Mon Sep 17 00:00:00 2001
From: Vasilito <adminpupkin@gmail.com>
Date: Fri, 17 Apr 2026 22:27:12 +0100
Subject: [PATCH] Add BLAKE3 hash to GRUB source, remove redundant chain module
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Add blake3 checksum for grub-2.12.tar.xz for recipe integrity
verification. Remove the chain module from grub-mkimage — the
chainloader command is built-in in GRUB 2.12, no separate module
needed. Image shrinks from 540 KiB to 512 KiB. Update module table
and size estimate in GRUB integration plan.
---
 local/docs/GRUB-INTEGRATION-PLAN.md | 7 ++++---
 local/recipes/core/grub/recipe.toml | 2 +-
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/local/docs/GRUB-INTEGRATION-PLAN.md b/local/docs/GRUB-INTEGRATION-PLAN.md
index 70876d5b..83590212 100644
--- a/local/docs/GRUB-INTEGRATION-PLAN.md
+++ b/local/docs/GRUB-INTEGRATION-PLAN.md
@@ -75,7 +75,6 @@ The standalone EFI image includes these modules:
 | `search` | Search for files/volumes |
 | `search_fs_uuid` | Search by filesystem UUID |
 | `search_label` | Search by volume label |
-| `chain` | Chainload other bootloaders |
 | `echo` | Print messages |
 | `test` | Conditional expressions |
 | `ls` | List files and devices |
@@ -83,6 +82,8 @@ The standalone EFI image includes these modules:
 | `halt` | Shut down |
 | `reboot` | Reboot |
 
+Note: `chainloader` is a built-in command in GRUB 2.12 (no separate module needed).
+
 No RedoxFS module is needed — GRUB chainloads the Redox bootloader instead.
 
 ## GRUB Configuration
@@ -114,9 +115,9 @@ mode with different kernel parameters, once supported).
 
 ## ESP Size Requirements
 
-| Component | Measured Size |
+| Component | Typical Size |
 |-----------|--------------|
-| GRUB EFI binary (with modules) | 540 KiB |
+| GRUB EFI binary (with modules) | ~500 KiB (varies with module list) |
 | Redox bootloader | 100–200 KiB |
 | grub.cfg | < 1 KiB |
 | **Total** | **~1 MiB** |
diff --git a/local/recipes/core/grub/recipe.toml b/local/recipes/core/grub/recipe.toml
index 601829b4..b1ee400e 100644
--- a/local/recipes/core/grub/recipe.toml
+++ b/local/recipes/core/grub/recipe.toml
@@ -13,6 +13,7 @@
 
 [source]
 tar = "https://ftp.gnu.org/gnu/grub/grub-2.12.tar.xz"
+blake3 = "13c48453f9becf4a6e49618749dc7cb83a2c4a0d7600eeeadc6c7c2772c0b877"
 
 [build]
 template = "custom"
@@ -103,7 +104,6 @@ echo "Creating standalone GRUB EFI image..."
     search \
     search_fs_uuid \
     search_label \
-    chain \
     echo \
     test \
     ls \