tree 8197ef73711f27e14025529ca06005911c37eec7
parent 08ce0a5bad2b5c970af567c2e9888d444afe3946
author Andrew Jeffery <andrew@aj.id.au> 1632704073 +0930
committer Andrew Jeffery <andrew@aj.id.au> 1632705022 +0930

Add prepare-emmc-qemu

prepare-emmc-qemu is a script that assembles a bootable eMMC image from
the WIC and u-boot artefacts of an eMMC-based build of OpenBMC:

```
andrew@mistburn:~/src/openbmc/openbmc/build/p10bmc $ prepare-emmc-qemu -h
NAME
        prepare-emmc-qemu: Assemble an OpenBMC eMMC image that can be booted under QEMU

SYNOPSYS
        prepare-emmc-qemu <TARGET> <BUILDDIR> [IMAGESIZE]

DESCRIPTION
        TARGET:         The name of the target machine, used to locate the required images.
        BUILDDIR:       The path to the OpenBMC build directory.
        IMAGESIZE:      The output image size, may be specified with units. Defaults to 16G.

EXAMPLE:
        prepare-emmc-qemu p10bmc ~/src/openbmc/openbmc/build/p10bmc
andrew@mistburn:~/src/openbmc/openbmc/build/p10bmc $ prepare-emmc-qemu p10bmc .
+ target=p10bmc
+ build_dir=.
+ image_size=16G
+ fw_dir=./tmp/deploy/images/p10bmc
+ wicxz=./tmp/deploy/images/p10bmc/obmc-phosphor-image-p10bmc.wic.xz
+ mmc=mmc-p10bmc.img
+ dd of=mmc-p10bmc.img if=/dev/zero bs=1M count=128
128+0 records in
128+0 records out
134217728 bytes (134 MB, 128 MiB) copied, 0.115718 s, 1.2 GB/s
+ dd of=mmc-p10bmc.img if=./tmp/deploy/images/p10bmc/u-boot-spl.bin conv=notrunc
107+0 records in
107+0 records out
54784 bytes (55 kB, 54 KiB) copied, 0.00642483 s, 8.5 MB/s
+ dd of=mmc-p10bmc.img if=./tmp/deploy/images/p10bmc/u-boot.bin conv=notrunc bs=1K seek=64
411+1 records in
411+1 records out
421275 bytes (421 kB, 411 KiB) copied, 0.0129515 s, 32.5 MB/s
+ xzdec ./tmp/deploy/images/p10bmc/obmc-phosphor-image-p10bmc.wic.xz
+ dd of=mmc-p10bmc.img conv=notrunc bs=1M seek=2
0+1846910 records in
0+1846910 records out
15167689728 bytes (15 GB, 14 GiB) copied, 100.126 s, 151 MB/s
+ truncate --size 16G mmc-p10bmc.img
+ set +x

For an AST2600-based machine, invoke QEMU with the following parameters:

        -drive file=/home/andrew/src/openbmc/openbmc/build/p10bmc/mmc-p10bmc.img,if=sd,format=raw,index=2
```

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Change-Id: I9dff01b4f85aa51e3253a6989bcd80bb2c48b6a9