coreboot-kgpe-d16/payloads/libpayload
Daisuke Nojiri d201e8c38a cbgfx: add error code to cbgfx_init
cbgfx_init can fail for multiple reasons. These codes help debugging
cbgfx_init.

BUG=chromium:502066
BRANCH=tot
TEST=Tested on Glados

Change-Id: Ifaa8d91b058bd838a53faf5d803c0337cb1e082c
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 4caf2496f3583e133f3f216ec401515c267e6e7b
Original-Change-Id: I84f60dd961db47fa426442172ab19676253b9495
Original-Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/315550
Original-Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/12930
Tested-by: build bot (Jenkins)
Reviewed-by: Nico Huber <nico.h@gmx.de>
2016-01-14 18:44:20 +01:00
..
arch tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
bin libpayload: Rename PDCurses-3.4 to PDCurses 2015-11-11 21:38:48 +01:00
configs libpayload/configs/config.veyron: Use CONFIG_LP_8250_SERIAL_CONSOLE 2015-12-06 22:24:30 +01:00
crypto
curses libpayload: PDCurses: Remove trailing whitespace 2015-11-20 16:27:36 +01:00
drivers cbgfx: add error code to cbgfx_init 2016-01-14 18:44:20 +01:00
gdb tree: drop last paragraph of GPL copyright header 2015-10-31 21:37:39 +01:00
include cbgfx: add error code to cbgfx_init 2016-01-14 18:44:20 +01:00
libc
libcbfs libpayload: get cbfs offset & size for default media from lib_sysinfo 2015-12-03 14:16:34 +01:00
liblz4
liblzma
libpci
sample
tests
Doxyfile
Kconfig libpayload: Remove redundant 8250 MMIO32 UART driver 2015-11-28 19:19:31 +01:00
LICENSES
LICENSE_GPL
Makefile libpayload: Add missing autoconf dependency 2015-09-10 09:18:12 +00:00
Makefile.inc
README

README

-------------------------------------------------------------------------------
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 coreboot/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.