On Mon, May 30, 2016 at 12:02:32AM +1000, Jonathan Gray wrote:
> There is now a bootloader for armv7 thanks to kettenis@
> Recent armv7 snapshots will configure disks to use efiboot and install
> device tree dtb files on a fat partition at the start of the disk.
>
> u-boot kernel images are no longer part of the release but can still
> be built for the time being. We are going to start assuming the
> kernel has been loaded with a dtb file to describe the hardware sometime
> soon. Those doing new installs can ignore the details but here they
> are.
>
> Support for EFI payloads was introduced in u-boot 2016.05, a port
> was recently imported for u-boot along with a patch to prevent
> it from allocating memory from non-populated regions (required for
> non imx platforms). A dtb port with prebuilt dtb files was also added.
>
> If BOOTARM.EFI is placed on fat or ext2 as /efi/boot/bootarm.efi and
> dtb files placed in /, /dtb/ or /dtb/current u-boot will automatically
> load and run it without any boot.scr or uenv.txt needed. efiboot will
> then load kernel images off ffs filesystems it finds. The u-boot
> binaries themselves on the same partition or raw offset remain largely
> board specific.
After the introduction of U-Boot 2016.05 and the bootloader, I am unable to
boot images via tftpd. It was a very convenient way to test kernels compiled
with a BeagleBone Black to boot a Cubieboard 2.
I am generating the .umg by hand with the following:
# mkuboot -a arm -o linux -e 0x40300000 -l 0x40300000 bsd bsd.SUNXI.umg
This is what was used by distrib/armv7/ramdisk/Makefile before being removed on
revision 1.13.
By the way, on Cubieboard 2, I'm using a modified miniroot-cubie-60.fs with the
u-boot obtained from sysutils/u-boot port and the corresponding
sun7i-a20-cubieboard2.dtb obtained from sysutils/dtb and put on / so u-boot can
find it.
Are there any other way to boot via network? I thought of pxe, which u-boot
supports, but armv7 has no pxeboot.
Thank you.
--
output:
U-Boot 2016.05 (Jun 13 2016 - 23:57:44 -0600) Allwinner Technology
CPU: Allwinner A20 (SUN7I)
Model: Cubietech Cubieboard2
I2C: ready
DRAM: 1 GiB
MMC: SUNXI SD/MMC: 0
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
SCSI: Target spinup took 0 ms.
AHCI 0001.0100 32 slots 1 ports 3 Gbps 0x1 impl SATA mode
flags: ncq stag pm led clo only pmp pio slum part ccc apst
Net: eth0: ethernet@01c50000
starting USB...
USB0: USB EHCI 1.00
USB1: USB OHCI 1.0
USB2: USB EHCI 1.00
USB3: USB OHCI 1.0
scanning bus 0 for devices... 1 USB Device(s) found
scanning bus 2 for devices... 1 USB Device(s) found
Hit any key to stop autoboot: 0
=> setenv ipaddr 192.168.1.7; setenv serverip 192.168.1.5; tftpboot
bsd.SUNXI.umg; bootm
Speed: 100, full duplex
Using ethernet@01c50000 device
TFTP from server 192.168.1.5; our IP address is 192.168.1.7
Filename 'bsd.SUNXI.umg'.
Load address: 0x42000000
Loading: #################################################################
#################################################################
#################################################################
#################################################################
#################################################################
####################
3.2 MiB/s
done
Bytes transferred = 5052180 (4d1714 hex)
## Booting kernel from Legacy Image at 42000000 ...
Image Name: boot
Image Type: ARM Linux Kernel Image (uncompressed)
Data Size: 5052116 Bytes = 4.8 MiB
Load Address: 40300000
Entry Point: 40300000
Verifying Checksum ... OK
Loading Kernel Image ... OK
Starting kernel ...
--
db
