Files
system76-coreboot/payloads/libpayload
Ronald G. Minnich 2149ad3c9c libpayload: add a ldscript for arm
I think this needs to be its own ldscript. I'm pretty sure this one
is going to need some work however. Is libpayload PIC? That would be
best if so.

Change-Id: I44578d70dfa72de527af8901a86583c2a60130ec
Signed-off-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-on: http://review.coreboot.org/2398
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: build bot (Jenkins)
2013-02-15 01:13:11 +01:00
..
2013-02-15 01:13:11 +01:00
2012-12-14 22:29:48 +01:00
2012-11-30 23:20:54 +01:00
2012-12-14 22:29:48 +01:00
2011-08-04 08:11:21 +02:00
2012-04-04 00:40:31 +02:00
2013-02-01 20:15:47 +01:00
2012-12-14 22:29:48 +01:00
2012-12-14 22:29:48 +01:00

-------------------------------------------------------------------------------
libpayload README
-------------------------------------------------------------------------------

libpayload is a minimal library to support standalone payloads
that can be booted with firmware like coreboot. It handles the setup
code, and provides common C library symbols such as malloc() and printf().

Note: This is _not_ a standard library for use with an operating system,
rather it's only useful for coreboot payload development!
See http://coreboot.org for details on coreboot.


Installation
------------

 $ git clone http://review.coreboot.org/p/coreboot.git

 $ cd payloads/libpayload

 $ make menuconfig

 $ make

 $ sudo make install (optional, will install into /opt per default)

As libpayload is for 32bit x86 systems only, you might have to install the
32bit libgcc version, otherwise your payloads will fail to compile.
On Debian systems you'd do 'apt-get install gcc-multilib' for example.


Usage
-----

Here's an example of a very simple payload (hello.c) and how to build it:

 #include <libpayload.h>

 int main(void)
 {
     printf("Hello, world!\n");
     return 0;
 }

Building the payload using the 'lpgcc' compiler wrapper:

 $ lpgcc -o hello.elf hello.c

Please see the sample/ directory for details.


Website and Mailing List
------------------------

The main website is http://www.coreboot.org/Libpayload.

For additional information, patches, and discussions, please join the
coreboot mailing list at http://coreboot.org/Mailinglist, where most
libpayload developers are subscribed.


Copyright and License
---------------------

See LICENSES.