Add support for flashing eMMC from sdcard
- Generate an SD card image that can be used to flash Enterprise's eMMC
b/122912967
Change-Id: Id3eeb91b7d93d131406156e43c81f0c9ed140721
diff --git a/bootloader.mk b/bootloader.mk
index 10f4fe1..8d7c9a9 100644
--- a/bootloader.mk
+++ b/bootloader.mk
@@ -19,6 +19,7 @@
include $(ROOTDIR)/build/preamble.mk
bootloader: $(PRODUCT_OUT)/u-boot.imx
+mkimage: $(HOST_OUT)/bin/mkimage
$(PRODUCT_OUT)/u-boot.imx: uboot-imx | out-dirs
$(LOG) u-boot extract
@@ -27,4 +28,9 @@
tar --strip-components 2 -C $(PRODUCT_OUT) -xf - ./boot/u-boot.imx
$(LOG) u-boot finished
-.PHONY:: bootloader
+$(HOST_OUT)/bin/mkimage: uboot-imx | out-dirs
+ find $(PRODUCT_OUT)/packages -name 'uboot-mkimage*.deb' | xargs \
+ dpkg --fsys-tarfile | \
+ tar --strip-components 3 -C $(HOST_OUT)/bin -xf - ./usr/bin/mkimage
+
+.PHONY:: bootloader mkimage
diff --git a/flashcard.mk b/flashcard.mk
new file mode 100644
index 0000000..e5ab1b4
--- /dev/null
+++ b/flashcard.mk
@@ -0,0 +1,112 @@
+# Copyright 2018 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+ifeq ($(ROOTDIR),)
+$(error $$ROOTDIR IS NOT DEFINED -- don\'t forget to source setup.sh)
+endif
+
+include $(ROOTDIR)/build/preamble.mk
+
+FLASHCARD_ROOTFS_START := 8
+FLASHCARD_ROOTFS_SIZE_MB := $(shell echo $(ROOTFS_SIZE_MB)+$(BOOT_SIZE_MB)+32 | bc)
+FLASHCARD_SIZE_MB := $(shell echo $(FLASHCARD_ROOTFS_START)+$(FLASHCARD_ROOTFS_SIZE_MB) | bc)
+
+FLASHCARD_PATH := $(PRODUCT_OUT)/flashcard_$(USERSPACE_ARCH).img
+FLASHCARD_XZ_PATH := $(PRODUCT_OUT)/flashcard_$(USERSPACE_ARCH).img.xz
+FLASHCARD_WORK_DIR := $(PRODUCT_OUT)/flashcard-work
+FLASHCARD_WIP_PATH := $(FLASHCARD_WORK_DIR)/flashcard.img
+FLASHCARD_MOUNT_PATH := $(FLASHCARD_WORK_DIR)/mount
+FLASHCARD_BOOT_MOUNT_PATH := $(FLASHCARD_WORK_DIR)/mount_boot
+flashcard: $(FLASHCARD_PATH)
+
+$(FLASHCARD_PATH): $(ROOTDIR)/board/flashcard/init $(ROOTDIR)/board/flashcard/boot.txt multistrap | \
+ busybox partition-table $(PRODUCT_OUT)/u-boot.imx $(HOST_OUT)/bin/mkimage
+ # TODO(math the size)
+ -rm -rf $(FLASHCARD_WORK_DIR)
+ mkdir -p $(FLASHCARD_WORK_DIR)
+
+ # Build folder structure for initramfs
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/bin
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/dev
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/proc
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/sys
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/usr/bin
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/usr/sbin
+ mkdir -p $(FLASHCARD_WORK_DIR)/initramfs/sbin
+
+ # Install basic /dev nodes
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/console c 5 1
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/null c 1 3
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/tty c 5 0
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/ttymxc0 c 207 16
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/tty0 c 4 0
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/urandom c 1 9
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/random c 1 8
+ sudo mknod $(FLASHCARD_WORK_DIR)/initramfs/dev/zero c 1 5
+
+ # Install init and busybox
+ cp $(ROOTDIR)/board/flashcard/init $(FLASHCARD_WORK_DIR)/initramfs/init
+ cp $(PRODUCT_OUT)/busybox $(FLASHCARD_WORK_DIR)/initramfs/bin/busybox
+
+ # Generate gzip'd initramfs archive
+ cd $(FLASHCARD_WORK_DIR)/initramfs; find . | cpio -o -H newc | gzip > $(FLASHCARD_WORK_DIR)/initramfs.cpio.gz
+
+ fallocate -l $(FLASHCARD_ROOTFS_SIZE_MB)M $(FLASHCARD_WIP_PATH)
+ mkfs.ext2 $(FLASHCARD_WIP_PATH)
+ mkdir -p $(FLASHCARD_MOUNT_PATH)
+ mkdir -p $(FLASHCARD_BOOT_MOUNT_PATH)
+ sudo mount -o loop $(FLASHCARD_WIP_PATH) $(FLASHCARD_MOUNT_PATH)
+ sudo mount -o loop,ro $(PRODUCT_OUT)/multistrap/boot_$(USERSPACE_ARCH).img $(FLASHCARD_BOOT_MOUNT_PATH)
+ sudo chown $(USER) $(FLASHCARD_MOUNT_PATH)
+
+ $(HOST_OUT)/bin/mkimage -A arm64 \
+ -O linux \
+ -T ramdisk \
+ -C gzip \
+ -n "initramfs" \
+ -d $(FLASHCARD_WORK_DIR)/initramfs.cpio.gz \
+ $(FLASHCARD_MOUNT_PATH)/initramfs.cpio.gz.uboot
+
+ $(HOST_OUT)/bin/mkimage -A arm \
+ -T script \
+ -O linux \
+ -d $(ROOTDIR)/board/flashcard/boot.txt \
+ $(FLASHCARD_MOUNT_PATH)/boot.scr
+
+ cp $(FLASHCARD_BOOT_MOUNT_PATH)/Image $(FLASHCARD_MOUNT_PATH)
+ cp $(FLASHCARD_BOOT_MOUNT_PATH)/*.dtb $(FLASHCARD_MOUNT_PATH)
+ cp $(PRODUCT_OUT)/partition-table-*.img $(FLASHCARD_MOUNT_PATH)
+ cp $(PRODUCT_OUT)/u-boot.imx $(FLASHCARD_MOUNT_PATH)
+ cp $(PRODUCT_OUT)/multistrap/boot_$(USERSPACE_ARCH).img $(FLASHCARD_MOUNT_PATH)/boot.img
+ cp $(PRODUCT_OUT)/multistrap/rootfs_$(USERSPACE_ARCH).img.wip $(FLASHCARD_MOUNT_PATH)/rootfs.img
+
+ sudo umount $(FLASHCARD_BOOT_MOUNT_PATH)
+ sudo umount $(FLASHCARD_MOUNT_PATH)
+
+ fallocate -l $(FLASHCARD_SIZE_MB)M $(FLASHCARD_PATH)
+ parted -s $(FLASHCARD_PATH) mklabel msdos
+ parted -s $(FLASHCARD_PATH) unit MiB mkpart primary ext2 $(BOOT_START) 100%
+ dd if=$(PRODUCT_OUT)/u-boot.imx of=$(FLASHCARD_PATH) conv=notrunc seek=$(UBOOT_START) bs=512
+ dd if=$(FLASHCARD_WIP_PATH) of=$(FLASHCARD_PATH) conv=notrunc seek=$(BOOT_START) bs=1M
+
+ rm -rf $(FLASHCARD_WORK_DIR)
+ touch $(FLASHCARD_PATH)
+
+targets::
+ @echo "flashcard - SD Card image to flash eMMC"
+
+clean::
+ rm -rf $(PRODUCT_OUT)/flashcard_*.img
+
+.PHONY:: flashcard
diff --git a/flashcard/boot.txt b/flashcard/boot.txt
new file mode 100644
index 0000000..2ef7f3a
--- /dev/null
+++ b/flashcard/boot.txt
@@ -0,0 +1,8 @@
+loadaddr=0x40480000
+fdt_addr=0x43000000
+initrd_addr=0x43800000
+ext2load mmc 1:1 ${loadaddr} Image
+setenv bootargs "console=ttymxc0 console=tty0 earlycon=ec_imx6q,0x30860000,115200"
+ext2load mmc 1:1 ${fdt_addr} fsl-imx8mq-phanbell.dtb
+ext2load mmc 1:1 ${initrd_addr} initramfs.cpio.gz.uboot
+booti ${loadaddr} ${initrd_addr} ${fdt_addr}
diff --git a/flashcard/init b/flashcard/init
new file mode 100755
index 0000000..49142f1
--- /dev/null
+++ b/flashcard/init
@@ -0,0 +1,35 @@
+#!/bin/busybox sh
+set -x
+# set -e
+
+function partition_table_image {
+ if [[ $1 -gt 7000000000 ]] && [[ $1 -lt 8000000000 ]]; then
+ echo "partition-table-8gb.img"
+ elif [[ $1 -gt 14000000000 ]] && [[ $1 -lt 17000000000 ]]; then
+ echo "partition-table-16gb.img"
+ elif [[ $1 -gt 60000000000 ]]; then
+ echo "partition-table-64gb.img"
+ fi
+}
+
+exec 0</dev/ttymxc0
+exec 1>/dev/ttymxc0
+exec 2>/dev/ttymxc0
+/bin/busybox --install -s
+mount -n -t devtmpfs devtmpfs /dev
+mount -n -t proc proc /proc
+mount -n -t sysfs sysfs /sys
+mkdir -p /tmp/sdcard
+mount /dev/mmcblk1p1 /tmp/sdcard
+
+PARTITION_SIZE=$(echo $(cat /sys/class/block/mmcblk0/size) \* 512 | bc)
+PARTITION_IMAGE=$(partition_table_image ${PARTITION_SIZE})
+
+dd if=/tmp/sdcard/${PARTITION_IMAGE} of=/dev/mmcblk0
+partprobe /dev/mmcblk0
+echo 0 > /sys/block/mmcblk0boot0/force_ro
+dd if=/tmp/sdcard/u-boot.imx of=/dev/mmcblk0boot0 bs=512 seek=66
+dd if=/tmp/sdcard/boot.img of=/dev/mmcblk0p1
+dd if=/tmp/sdcard/rootfs.img of=/dev/mmcblk0p3
+echo "Finished flashing the system!"
+exec /bin/busybox init $*
