coreboot-kgpe-d16/payloads/libpayload
Gabe Black b9fa1ed5e8 Make libpayload parse the coreboot tables before setting up the consoles
At least one of the console drivers, coreboot fb, uses information in the
sysinfo structure to set itself up. If that structure hasn't been populated,
the driver decides that there is no framebuffer and disables itself. Reversing
the order these are set up fixes that problem.

Change-Id: Idd8b5518980dfdd82fd4359dd0133ab7736fc428
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: http://review.coreboot.org/816
Tested-by: build bot (Jenkins)
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
2012-03-31 12:10:07 +02:00
..
arch Make libpayload parse the coreboot tables before setting up the consoles 2012-03-31 12:10:07 +02:00
bin Add lib/ to the default library path of lpgcc, so -l works 2011-03-01 07:12:08 +00:00
configs libpayload: Add liblzma, libcbfs 2011-08-04 08:11:21 +02:00
crypto Use coreboot build system for libpayload, too. 2011-06-30 20:40:10 +02:00
curses libpayload: Enable colors in PDcurses 2011-11-11 18:24:48 +01:00
drivers libpayload: fix compile error with enabled USB_DEBUG 2012-02-20 21:46:32 +01:00
include libpayload: enforce const correctness for CMOS getter/setter 2012-02-17 19:26:59 +01:00
lib tint requires more heap space for PDCurses. 2012-02-29 20:08:41 +01:00
libc Fix libpayload alloc() size and gcc pointer optimization problems. 2012-03-21 21:03:24 +01:00
libcbfs libpayload: Allow using CBFS functions on images in RAM 2012-01-26 12:27:24 +01:00
liblzma libpayload: Add liblzma, libcbfs 2011-08-04 08:11:21 +02:00
libpci libpayload: remove trailing whitespace and run dos2unix 2011-11-01 19:08:23 +01:00
sample fix compilation of hello.elf example payload. 2010-08-28 23:23:47 +00:00
util Respect linker order 2011-12-21 16:27:01 +01:00
Config.in libpayload: Add liblzma, libcbfs 2011-08-04 08:11:21 +02:00
Doxyfile Run doxygen -u on doxygen configuration files 2010-06-28 10:40:38 +00:00
LICENSES Since some people disapprove of white space cleanups mixed in regular commits 2010-04-27 06:56:47 +00:00
Makefile Fixes to the libpayload build system 2011-07-03 14:47:48 +02:00
Makefile.inc libpayload: Add liblzma, libcbfs 2011-08-04 08:11:21 +02:00
README Update repo path in libpayload readme. 2011-03-29 19:29:01 +00:00

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
------------

 $ svn co svn://coreboot.org/coreboot/trunk/payloads/libpayload

 $ cd 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.