mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
85 lines
2.5 KiB
Groff
85 lines
2.5 KiB
Groff
|
.TH KWBOOT 1 "2012-05-19"
|
||
|
|
|
||
|
|
.SH NAME
|
||
|
|
kwboot \- Boot Marvell Kirkwood SoCs over a serial link.
|
||
|
|
.SH SYNOPSIS
|
||
|
|
.B kwboot
|
||
|
|
.RB [ "-b \fIimage\fP" ]
|
||
|
|
.RB [ "-p" ]
|
||
|
|
.RB [ "-t" ]
|
||
|
|
.RB [ "-B \fIbaudrate\fP" ]
|
||
|
|
.RB \fITTY\fP
|
||
|
|
.SH "DESCRIPTION"
|
||
|
|
|
||
|
|
The \fBmkimage\fP program boots boards based on Marvell's Kirkwood
|
||
|
|
platform over their integrated UART. Boot image files will typically
|
||
|
|
contain a second stage boot loader, such as U-Boot. The image file
|
||
|
|
must conform to Marvell's BootROM firmware image format
|
||
|
|
(\fIkwbimage\fP), created using a tool such as \fBmkimage\fP.
|
||
|
|
|
||
|
|
Following power-up or a system reset, system BootROM code polls the
|
||
|
|
UART for a brief period of time, sensing a handshake message which
|
||
|
|
initiates an image upload. This program sends this boot message until
|
||
|
|
it receives a positive acknowledgement. The image is transfered using
|
||
|
|
Xmodem.
|
||
|
|
|
||
|
|
Additionally, this program implements a minimal terminal mode, which
|
||
|
|
can be used either standalone, or entered immediately following boot
|
||
|
|
image transfer completion. This is often useful to catch early boot
|
||
|
|
messages, or to manually interrupt a default boot procedure performed
|
||
|
|
by the second-stage loader.
|
||
|
|
|
||
|
|
.SH "OPTIONS"
|
||
|
|
|
||
|
|
.TP
|
||
|
|
.BI "\-b \fIimage\fP"
|
||
|
|
Handshake; then upload file \fIimage\fP over \fITTY\fP.
|
||
|
|
|
||
|
|
Note that for the encapsulated boot code to be executed, \fIimage\fP
|
||
|
|
must be of type "UART boot" (0x69). Boot images of different types,
|
||
|
|
such as backup images of vendor firmware downloaded from flash memory
|
||
|
|
(type 0x8B), will not work (or not as expected). See \fB-p\fP for a
|
||
|
|
workaround.
|
||
|
|
|
||
|
|
This mode writes handshake status and upload progress indication to
|
||
|
|
stdout.
|
||
|
|
|
||
|
|
.TP
|
||
|
|
.BI "\-p"
|
||
|
|
In combination with \fB-b\fP, patches the header in \fIimage\fP prior
|
||
|
|
to upload, to "UART boot" type.
|
||
|
|
|
||
|
|
This option attempts on-the-fly conversion of some none-UART image
|
||
|
|
types, such as images which were originally formatted to be stored in
|
||
|
|
flash memory.
|
||
|
|
|
||
|
|
Conversion is performed in memory. The contents of \fIimage\fP will
|
||
|
|
not be altered.
|
||
|
|
|
||
|
|
.TP
|
||
|
|
.BI "\-t"
|
||
|
|
Run a terminal program, connecting standard input and output to
|
||
|
|
.RB \fITTY\fP.
|
||
|
|
|
||
|
|
If used in combination with \fB-b\fP, terminal mode is entered
|
||
|
|
immediately following a successful image upload.
|
||
|
|
|
||
|
|
If standard I/O streams connect to a console, this mode will terminate
|
||
|
|
after receiving 'ctrl-\\' followed by 'c' from console input.
|
||
|
|
|
||
|
|
.TP
|
||
|
|
.BI "\-B \fIbaudrate\fP"
|
||
|
|
Adjust the baud rate on \fITTY\fP. Default rate is 115200.
|
||
|
|
|
||
|
|
.SH "SEE ALSO"
|
||
|
|
.PP
|
||
|
|
\fBmkimage\fP(1)
|
||
|
|
|
||
|
|
.SH "AUTHORS"
|
||
|
|
|
||
|
|
Daniel Stodden <daniel.stodden@gmail.com>
|
||
|
|
.br
|
||
|
|
Luka Perkov <uboot@lukaperkov.net>
|
||
|
|
.br
|
||
|
|
David Purdy <david.c.purdy@gmail.com>
|