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The package contains u-boot and the RPi firmware blobs. It expects a tar ball of the root filesystem (including kernel and dtbs) on stdin and produces a compressed tar ball on stdout with the files to copy to a FAT32 formatted SD card. Signed-off-by: Rolf Neugebauer <rolf.neugebauer@docker.com>
30 lines
909 B
Bash
Executable File
30 lines
909 B
Bash
Executable File
#!/bin/sh
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set -e
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# input is a tarball on stdin with kernel, dtbs and cmdline in /boot
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# output is an tar to be extracted onto a SD card
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mkdir -p /files
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cd /files
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# extract. BSD tar auto recognises compression
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[ -t 0 ] || bsdtar xzf -
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cd /
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# copy/convert files
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cp /files/boot/dtb/broadcom/bcm2837-rpi-3-b.dtb /boot
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/bin/mkimage -A arm64 -O linux -T kernel -C gzip -a 0x80000 -e 0x80000 \
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-d /files/boot/kernel /boot/kernel.uimg >> /boot/uboot.log
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/bin/mkimage -A arm64 -O linux -T script -C none -a 0x00000000 -e 0x00000000 -n RPi3 \
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-d /boot/boot.script /boot/boot.scr >> /boot/uboot.log
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# build an initrd and convert it
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rm -rf /files/boot
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cd /files && find . | cpio -o -H newc | gzip > /initrd.img
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/bin/mkimage -A arm64 -O linux -T ramdisk -d /initrd.img /boot/initrd.uimg >> /boot/uboot.log
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# now everything is setup in /boot just need to tar it
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cd /boot && tar cf - .
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