coreboot-kgpe-d16/payloads/libpayload
Patrick Georgi 885ec48b95 libpayload: update xcompile script
Copy from coreboot. at some point it probably should just reuse coreboot's
version.

Change-Id: Iee905a9060983ff85e2e70bde69a221c64a07cbc
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Reviewed-on: http://review.coreboot.org/10756
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
2015-07-03 09:38:18 +02:00
..
arch libpayload: Fix compilation on ARM with GDB enabled 2015-07-01 20:55:29 +02:00
bin libpayload: arch/mips: Add basic MIPS architecture support 2015-03-21 11:07:50 +01:00
configs cygnus: enable serial driver for depthcharge 2015-04-21 08:25:54 +02:00
crypto libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
curses libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
drivers libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
gdb Remove address from GPLv2 headers 2015-05-21 20:50:25 +02:00
include libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
libc libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
libcbfs libpayload: Make Kconfig bools use IS_ENABLED() 2015-06-30 18:55:15 +02:00
liblzma Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
libpci Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
sample Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
tests Remove empty lines at end of file 2015-06-08 00:55:07 +02:00
util/xcompile libpayload: update xcompile script 2015-07-03 09:38:18 +02:00
Doxyfile Run doxygen -u on doxygen configuration files 2010-06-28 10:40:38 +00:00
Kconfig libpayload: add UDC driver for Designware controller 2015-06-30 08:09:49 +02:00
LICENSES libpayload: Introduce new Kconfig to explicitly allow GPL code 2015-01-09 07:06:27 +01:00
LICENSE_GPL libpayload: Introduce new Kconfig to explicitly allow GPL code 2015-01-09 07:06:27 +01:00
Makefile libpayload: Makefile: Use variables defined for Kconfig 2015-06-30 18:56:19 +02:00
Makefile.inc libpayload: always compile with -ffunction-sections 2015-07-01 22:07:48 +02:00
README Remove empty lines at end of file 2015-06-08 00:55:07 +02:00

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.