UBoot-Install [FreeBSD WIKI]

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====== Installing FreeBSD On U-Boot based PowerPC Targets ======

Some install notes from building and installing on %%AmigaOne%% A1222 and %%AmigaOne%% X5000, but should be relevant to most U-Boot %%PowerPC%% targets.

As of r344242 bsdinstaller will place ubldr on its own FAT filesystem, which can then be loaded by uboot as follows:

<code>
fatload $medium $part $loadaddr ubldr
fatload $medium $part $fdtaddr $fdtfile
fdt addr $fdtaddr
fdt boardsetup
bootelf $loadaddr
</code>

With '$medium' and '$part' being the device %%FreeBSD%% is installed to, with the partition ubldr is installed to.  For example:

<code>
fatload sata 0:1 $loadaddr ubldr
fatload sata 0:1 $fdtaddr $fdtfile
fdt addr $fdtaddr
fdt boardsetup
bootelf $loadaddr
</code>

===== Building the World and Kernel =====

The targets tested with are:
  * %%AmigaOne%% A1222 - MPC85XXSPE (powerpcspe)
  * %%AmigaOne%% X5000 - QORIQ64 (powerpc64)

Example with 64-bit target:

<code>
make -s -j3 buildworld buildkernel TARGET_ARCH=powerpc64 KERNCONF=QORIQ64
make -C release cdrom
</code>

You should be able to boot the CDROM image on a USB stick, if U-boot can read ISO9660, otherwise you will need to use another means (FAT volume) to get ubldr into U-boot's memory, along with the FDT blob.

On Freescale hardware with SATA, you can install to SATA for local booting.  This includes the %%AmigaOne%% A1222 and X5000 I tested.  Notes for this are:

  - SATA disk needs to be partitioned MBR, with a FAT volume for booting.  I make this 128MB, so there's plenty of space for kernels, the dtb, and any other needed files.
  - If you plan to only use %%FreeBSD%%, dedicate slice 2 to %%FreeBSD%%.

My GEOM map:

<code>
# gpart show ada0
=>       63  234441585  ada0  MBR  (112G)
         63          1        - free -  (512B)
         64     262144     1  fat16  (128M)
     262208  234179432     2  freebsd  (112G)
  234441640          8        - free -  (4.0K)

=>        0  234179432  ada0s2  BSD  (112G)
          0   41943040       1  freebsd-ufs  (20G)
   41943040    8388608       2  freebsd-swap  (4.0G)
   50331648  183847784       4  freebsd-zfs  (88G)
</code>

Once %%FreeBSD%% is installed, set bootargs in ubldr, and set SATA boot:

<code>
setenv bootcmd_sata 'sata start; fatload sata 0:1 ${loadaddr} ubldr; fatload sata 0:1 ${fdtaddr} ${fdtfile}; fdt addr ${fdtaddr}; fdt boardsetup; bootelf ${loadaddr}'
setenv bootcmd_old ${bootcmd}
setenv bootcmd run bootcmd_sata
saveenv
</code>

Be sure to use single quotes when setting bootcmd_sata, so the environment variables aren't expanded immediately, and can be updated later if needed.