coreboot-kgpe-d16/payloads/libpayload
Aaron Durbin 5ca4f4119b libpayload: add support for vboot_handoff
The vboot_handoff structure needs to be parsed from the coreboot tables.
Add a placeholder in sysinfo as well as the ability to parse the
coreboot table entry concering the vboot_handoff structure.

Built with unified boot loader and ebuild changes. Can find and use
the VbInitParams for doing kernel selection.

Change-Id: If40a863b4a445fa5f7814325add03355fd0ac647
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2720
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
2013-03-14 04:57:03 +01:00
..
arch libpayload: add support for vboot_handoff 2013-03-14 04:57:03 +01:00
bin libpayload: fix compiler flags 2013-02-15 06:51:52 +01:00
configs libpayload: Update configs/defconfig file 2012-12-18 15:05:36 +01:00
crypto Change TARGET_I386 to ARCH_X86 2012-11-30 23:20:54 +01:00
curses PDcurses: Delete automatically created (and unused) files 2012-12-20 14:46:29 +01:00
drivers libpayload: Put dump_td/dump_ed in ohci.c behind #ifdef USB_DEBUG 2013-03-14 04:52:38 +01:00
include libpayload: add support for vboot_handoff 2013-03-14 04:57:03 +01:00
libc libpayload: Generalize and redistribute timekeeping code 2013-03-14 04:53:33 +01:00
libcbfs libpayload: Fix reading x86 CBFS images from RAM 2013-03-12 10:23:12 +01:00
liblzma libpayload: Don't do unaligned accesses during LZMA decompression 2013-03-13 23:42:09 +01:00
libpci libpayload: minor cleanups 2012-04-04 00:40:31 +02:00
sample
util libpayload: Start using only internal and compiler headers. 2013-03-13 22:04:44 +01:00
Config.in libpayload: Make whether or not there's an IO address space configurable 2013-03-13 23:02:05 +01:00
Doxyfile
LICENSES
Makefile libpayload: ARCH-$(CONFIG_ARCH_ARMV7) was defined twice, make one POWERPC 2013-03-13 23:09:31 +01:00
Makefile.inc libpayload: Start using only internal and compiler headers. 2013-03-13 22:04:44 +01:00
README libpayload: Update README with Git repository URL and directory location 2013-01-30 17:36:22 +01:00

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 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.