mirror of
https://github.com/archr-linux/Arch-R.git
synced 2026-03-31 14:41:55 -07:00
8650d940e2
Major architecture change: move from BSP kernel 6.6 with pre-merged panel DTBs to mainline kernel 6.12.61 LTS with separated board DTBs + panel overlays. - Board DTB = hardware profile (GPIOs, PMIC, joypad, audio). 16 boards. Auto-selected by U-Boot via SARADC ADC reading (hwrev). - Panel overlay = display init sequence. 20 panels. Applied at boot time via boot.ini fdt apply. - Two image variants: original (a_boot.ini) and clone (b_boot.ini) - Kernel cross-compiles from x86 host (no ARM chroot needed) - Initramfs boot splash with SVG rendering at 0.7s - Out-of-tree joypad driver (singleadc-joypad) for clone boards - Panel generic-dsi driver with archr,generic-dsi compatible Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
103 lines
3.6 KiB
Bash
Executable File
103 lines
3.6 KiB
Bash
Executable File
#!/bin/bash
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#==============================================================================
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# Arch R - Initramfs Builder
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#==============================================================================
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# Generates the initramfs directory for kernel embedding (CONFIG_INITRAMFS_SOURCE).
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# Must run BEFORE build-kernel.sh — the kernel embeds this at compile time.
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#
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# Pipeline:
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# 1. Compile archr-init.c + SVG splash library (static aarch64 binary)
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# 2. Create initramfs directory tree (init + dev + proc + newroot)
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#
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# Logo is rendered from SVG paths at runtime (no ImageMagick needed).
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#
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# Output: $OUTPUT_DIR/initramfs/ (directory tree, not cpio)
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#==============================================================================
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set -e
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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# Colors
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GREEN='\033[0;32m'
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YELLOW='\033[1;33m'
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RED='\033[0;31m'
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NC='\033[0m'
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log() { echo -e "${GREEN}[$(date '+%H:%M:%S')]${NC} $1"; }
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warn() { echo -e "${YELLOW}[$(date '+%H:%M:%S')] WARNING:${NC} $1"; }
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error() { echo -e "${RED}[$(date '+%H:%M:%S')] ERROR:${NC} $1"; exit 1; }
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#------------------------------------------------------------------------------
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# Configuration
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#------------------------------------------------------------------------------
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OUTPUT_DIR="$SCRIPT_DIR/output"
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INITRAMFS_DIR="$OUTPUT_DIR/initramfs"
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SPLASH_DIR="$SCRIPT_DIR/scripts/splash"
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log "================================================================"
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log " Arch R - Initramfs Builder (SVG splash)"
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log "================================================================"
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#------------------------------------------------------------------------------
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# Prerequisites
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#------------------------------------------------------------------------------
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if ! command -v aarch64-linux-gnu-gcc &>/dev/null; then
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error "Cross-compiler not found. Install: sudo apt install gcc-aarch64-linux-gnu"
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fi
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# Verify splash library files exist
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for f in fbsplash.c svg_parser.c svg_renderer.c archr-logo.h; do
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if [ ! -f "$SPLASH_DIR/$f" ]; then
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error "Missing splash file: $SPLASH_DIR/$f"
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fi
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done
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#------------------------------------------------------------------------------
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# Step 1: Compile archr-init (static aarch64 binary with SVG splash)
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#------------------------------------------------------------------------------
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log ""
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log "Step 1: Compiling archr-init (SVG splash)..."
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TMPDIR=$(mktemp -d)
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aarch64-linux-gnu-gcc -static -O2 \
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-I"$SPLASH_DIR" \
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-o "$TMPDIR/archr-init" \
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"$SCRIPT_DIR/scripts/archr-init.c" \
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"$SPLASH_DIR/fbsplash.c" \
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"$SPLASH_DIR/svg_parser.c" \
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"$SPLASH_DIR/svg_renderer.c" \
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-lm
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log " archr-init compiled ($(du -h "$TMPDIR/archr-init" | cut -f1))"
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#------------------------------------------------------------------------------
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# Step 2: Create initramfs directory tree
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#------------------------------------------------------------------------------
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log ""
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log "Step 2: Creating initramfs directory..."
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rm -rf "$INITRAMFS_DIR"
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mkdir -p "$INITRAMFS_DIR"/{dev,proc,newroot}
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cp "$TMPDIR/archr-init" "$INITRAMFS_DIR/init"
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chmod 755 "$INITRAMFS_DIR/init"
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#------------------------------------------------------------------------------
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# Cleanup
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#------------------------------------------------------------------------------
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rm -rf "$TMPDIR"
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INIT_SIZE=$(du -h "$INITRAMFS_DIR/init" | cut -f1)
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log ""
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log "================================================================"
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log " Initramfs Ready"
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log "================================================================"
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log ""
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log " Directory: $INITRAMFS_DIR"
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log " /init: $INIT_SIZE (static aarch64 + SVG splash)"
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log ""
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log " Kernel will embed this via CONFIG_INITRAMFS_SOURCE"
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