diff options
| author | Petr Kulhavy <brain@jikos.cz> | 2016-09-09 10:27:16 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2016-10-01 20:04:51 -0400 |
| commit | b6dd69a4d6b20862a2075f402f9edfb0de6d14ed (patch) | |
| tree | cde16c70cc63077087cdfb209d812a1d7a5980b8 /doc | |
| parent | 87b8530fe24408b0ef41c9b80f38c395ccafad2c (diff) | |
fastboot: add support for writing MBR
Add special target "mbr" (otherwise configurable via CONFIG_FASTBOOT_MBR_NAME)
to write MBR partition table.
Partitions are now searched using the generic function which finds any
partiiton by name. For MBR the partition names hda1, sda1, etc. are used.
Signed-off-by: Petr Kulhavy <brain@jikos.cz>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Steve Rae <steve.rae@raedomain.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/README.android-fastboot | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/doc/README.android-fastboot b/doc/README.android-fastboot index ce12bc594f..dea70669f1 100644 --- a/doc/README.android-fastboot +++ b/doc/README.android-fastboot @@ -59,6 +59,43 @@ To define a partition alias add an environment variable similar to: fastboot_partition_alias_<alias partition name>=<actual partition name> Example: fastboot_partition_alias_boot=LNX +Partition Names +=============== +The Fastboot implementation in U-boot allows to write images into disk +partitions (currently on eMMC). Target partitions are referred on the host +computer by their names. + +For GPT/EFI the respective partition name is used. + +For MBR the partitions are referred by generic names according to the +following schema: + + <device type> <device index letter> <partition index> + +Example: hda3, sdb1, usbda1 + +The device type is as follows: + + * IDE, ATAPI and SATA disks: hd + * SCSI disks: sd + * USB media: usbd + * Disk on chip: docd + * other: xx + +The device index starts from 'a' and refers to the interface (e.g. USB +controller, SD/MMC controller) or disk index. The partition index starts +from 1 and describes the partition number on the particular device. + +Writing Partition Table +======================= +Fastboot also allows to write the partition table to the media. This can be +done by writing the respective partition table image to a special target +"gpt" or "mbr". These names can be customized by defining the following +configuration options: + +CONFIG_FASTBOOT_GPT_NAME +CONFIG_FASTBOOT_MBR_NAME + In Action ========= Enter into fastboot by executing the fastboot command in u-boot and you |