android_packages_modules_Vi.../microdroid/uboot-env.txt

# Static u-boot environment variables for microdroid. See b/180481192

# Boot the device following the Android boot procedure
bootcmd=boot_android virtio 0#misc

bootdelay=0
fdtaddr=0x80000000
Build uboot_env.img statically The environment partition can control the behavior of the bootloader. Therefore it shouldn't be dynamically created on the device. Bug: 180675126 Test: m microdroid_uboot_env Change-Id: If49634293f2fe7fbb82fae243632480fc7d72d30 2021-02-19 06:44:52 +00:00			`# Static u-boot environment variables for microdroid. See b/180481192`

Add fstab for microdroid & add more kernel commandline params The vendor_boot.img now has fstab file in it. It currently mounts the system.img to /system, but eventually we will use the dynamic partitions in super.img. A few more essential kernel commandline params are added. Eventually, these androidboot.* parameters will be given via /proc/bootconfig. Bug: 178562528 Test: build microdroid-* modules. push microdroid-boot-5.10.img as boot.img, microdroid-vendor-boot-5.10.img as vendor_boot.img, micrdroid.img as super.img. Run assemble_cvd on the device. Push microdroid-uboot_env.img as uboot_env.img Run crosvm with the generated composite image. VM goes through the bootloader, kernel, first stage init, and then second stage init. Change-Id: Id1ce4f33f912bb80cd280060ecd9cabe57675660 2021-02-23 03:53:30 +00:00			`# Boot the device following the Android boot procedure`
Use devnum#partname format instead of the part number The first and the second parameters of the `boot_android` command are dev_iface and dev_part_str. The former selects the device interface like `virtio` and the latter selects a specific partition. The format for the latter is devnum#partname. ex) 0#misc. When the second parameter is not given, u-boot falls back to read the environment variable `bootdevice`, whose format is `devnum:partnum`. For microdroid (and cuttlefish as well), we have been relying on the fallback behavior. With this change, we stop doing that. The second parameter is correctly set to "0#misc" and the variable `bootdevice` is dropped. Bug: 181635258 Test: microdroid boots Change-Id: Ib572d0149765ee93d780837216e6a1c8eafaad03 2021-03-02 09:22:58 +00:00			`bootcmd=boot_android virtio 0#misc`
Build uboot_env.img statically The environment partition can control the behavior of the bootloader. Therefore it shouldn't be dynamically created on the device. Bug: 180675126 Test: m microdroid_uboot_env Change-Id: If49634293f2fe7fbb82fae243632480fc7d72d30 2021-02-19 06:44:52 +00:00
			`bootdelay=0`
			`fdtaddr=0x80000000`