vasilito
43d7569796
The script now reads the Redox bootloader from the cookbook's bootloader package output instead of extracting it from the ESP. This makes it idempotent — previously, rerunning after GRUB install would copy GRUB itself into EFI/REDBEAR/redbear.efi because ESP's BOOTX64.EFI was GRUB. Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
134 lines
4.0 KiB
Bash
Executable File
134 lines
4.0 KiB
Bash
Executable File
#!/bin/bash
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# install-grub.sh — Install GRUB bootloader into a Red Bear OS disk image
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#
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# Boot sequence after installation:
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# UEFI firmware → GRUB (menu) → chainload Redox bootloader → kernel → Red Bear OS
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#
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# Usage:
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# ./local/scripts/install-grub.sh <harddrive.img>
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# ./local/scripts/install-grub.sh build/x86_64/harddrive.img
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#
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# Prerequisites:
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# - GRUB recipe built: make r.grub
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# - ESP partition >= 8 MiB (set efi_partition_size = 16 in config)
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# - Python 3 (for fat_tool.py — no mtools needed)
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set -euo pipefail
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IMAGE="${1:?Usage: $0 <harddrive.img>}"
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SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"
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REPO_ROOT="$(cd "${SCRIPT_DIR}/../.." && pwd)"
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ESP_LBA=2048
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ESP_SECTOR_SIZE=512
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ESP_OFFSET=$((ESP_LBA * ESP_SECTOR_SIZE))
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FAT_TOOL="${SCRIPT_DIR}/fat_tool.py"
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ESP="${IMAGE}@${ESP_OFFSET}"
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if [ ! -f "${IMAGE}" ]; then
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echo "ERROR: Image file not found: ${IMAGE}" >&2
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exit 1
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fi
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if ! command -v python3 &>/dev/null; then
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echo "ERROR: python3 not found" >&2
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exit 1
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fi
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GRUB_EFI=""
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GRUB_CFG=""
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# Search in recipe stage directory (cookbook stores output here)
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for f in $(find "${REPO_ROOT}/local/recipes/core/grub/target" -path "*/stage/usr/lib/boot/grub.efi" 2>/dev/null); do
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GRUB_EFI="${f}"
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break
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done
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for f in $(find "${REPO_ROOT}/local/recipes/core/grub/target" -path "*/stage/usr/lib/boot/grub.cfg" 2>/dev/null); do
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GRUB_CFG="${f}"
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break
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done
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# Fallback: search repo extracted packages
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if [ -z "${GRUB_EFI}" ]; then
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for f in $(find "${REPO_ROOT}/repo" -path "*/grub/*/usr/lib/boot/grub.efi" 2>/dev/null); do
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GRUB_EFI="${f}"
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break
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done
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fi
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if [ -z "${GRUB_CFG}" ]; then
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for f in $(find "${REPO_ROOT}/repo" -path "*/grub/*/usr/lib/boot/grub.cfg" 2>/dev/null); do
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GRUB_CFG="${f}"
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break
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done
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fi
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if [ -z "${GRUB_CFG}" ] && [ -f "${REPO_ROOT}/local/recipes/core/grub/grub.cfg" ]; then
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GRUB_CFG="${REPO_ROOT}/local/recipes/core/grub/grub.cfg"
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fi
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if [ -z "${GRUB_EFI}" ]; then
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echo "ERROR: Cannot find grub.efi in recipe output." >&2
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echo "Build GRUB first: make r.grub" >&2
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exit 1
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fi
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if [ -z "${GRUB_CFG}" ]; then
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echo "ERROR: Cannot find grub.cfg" >&2
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exit 1
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fi
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echo "GRUB Installation"
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echo " Image: ${IMAGE}"
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echo " ESP: offset ${ESP_OFFSET} bytes (LBA ${ESP_LBA})"
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echo " GRUB EFI: ${GRUB_EFI}"
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echo " GRUB CFG: ${GRUB_CFG}"
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echo ""
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echo "Current ESP contents:"
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python3 "${FAT_TOOL}" ls "${IMAGE}" "${ESP_OFFSET}" /
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echo ""
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REDBEAR_EFI=""
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for f in $(find "${REPO_ROOT}/local/recipes/core/bootloader/target" -path "*/stage/usr/lib/boot/bootloader.efi" 2>/dev/null); do
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REDBEAR_EFI="${f}"
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break
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done
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for f in $(find "${REPO_ROOT}/repo" -path "*/bootloader/*/usr/lib/boot/bootloader.efi" 2>/dev/null); do
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REDBEAR_EFI="${f}"
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break
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done
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if [ -z "${REDBEAR_EFI}" ]; then
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echo "ERROR: Cannot find Redox bootloader (bootloader.efi) in cookbook output." >&2
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echo "Build the bootloader first: make r.bootloader" >&2
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exit 1
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fi
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echo "Sourcing Redox bootloader from ${REDBEAR_EFI}"
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REDBEAR_SIZE=$(stat -c%s "${REDBEAR_EFI}")
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echo " Redox bootloader: ${REDBEAR_SIZE} bytes"
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echo "Creating EFI/REDBEAR directory..."
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python3 "${FAT_TOOL}" mkdir "${IMAGE}" "${ESP_OFFSET}" "EFI/REDBEAR" 2>/dev/null || true
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echo "Installing Redox bootloader to EFI/REDBEAR/redbear.efi..."
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python3 "${FAT_TOOL}" cp-in "${IMAGE}" "${ESP_OFFSET}" "${REDBEAR_EFI}" "EFI/REDBEAR/redbear.efi"
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GRUB_SIZE=$(stat -c%s "${GRUB_EFI}")
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echo "Installing GRUB (${GRUB_SIZE} bytes) as EFI/BOOT/BOOTX64.EFI..."
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python3 "${FAT_TOOL}" cp-in "${IMAGE}" "${ESP_OFFSET}" "${GRUB_EFI}" "EFI/BOOT/BOOTX64.EFI"
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echo "Installing grub.cfg to EFI/BOOT/grub.cfg..."
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python3 "${FAT_TOOL}" cp-in "${IMAGE}" "${ESP_OFFSET}" "${GRUB_CFG}" "EFI/BOOT/grub.cfg"
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echo ""
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echo "Final ESP contents:"
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python3 "${FAT_TOOL}" ls "${IMAGE}" "${ESP_OFFSET}" /
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echo ""
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echo "Installation complete. Boot sequence: UEFI -> GRUB (5s timeout) -> Redox bootloader -> kernel"
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echo "Test with: make qemu"
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echo "Revert: make all CONFIG_NAME=<your-config> (rebuild without GRUB)"
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