coreboot-kgpe-d16/payloads/libpayload
Patrick Georgi b5623dede7 libpayload: usb: handle situation with no free device address
Change-Id: I1308bdca90f1a09d980f384ee85552198a39b965
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Found-by: Coverity Scan #1260940
Reviewed-on: https://review.coreboot.org/18036
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
2017-01-06 18:43:05 +01:00
..
arch libpayload: head.S: Avoid clearing BSS (and heap) again 2016-08-13 02:46:19 +02:00
bin libpayload: Move base address, stack and heap size to Kconfig 2016-03-15 20:53:38 +01:00
configs libpayload: Add nyan config 2016-05-09 07:49:57 +02:00
crypto
curses libpayload/.../PDCurses: Improve compatibility with ncurses 2016-12-14 18:02:51 +01:00
drivers libpayload: usb: handle situation with no free device address 2017-01-06 18:43:05 +01:00
gdb
include libpayload: increase MAX_ARGC_COUNT 2016-11-25 13:39:01 +01:00
libc libpayload: Fix strtok_r 2016-09-08 21:11:34 +02:00
libcbfs libpayload: cbfs: Fix minor memory leak in some edge cases 2016-08-12 22:52:22 +02:00
liblz4 cbfs: Add LZ4 in-place decompression support for pre-RAM stages 2016-02-22 21:38:37 +01:00
liblzma libpayload: lzma: Allocate scratchpad on the heap 2016-08-08 19:02:07 +02:00
libpci
sample
tests
Doxyfile
Kconfig libpayload: Reintroduce CONFIG_LP_CHROMEOS to set suitable defaults 2016-10-17 22:46:11 +02:00
LICENSES
LICENSE_GPL
Makefile libpayload: update junit.xml target, clean up output 2016-03-25 18:18:27 +01:00
Makefile.inc libpayload: update junit.xml target, clean up output 2016-03-25 18:18:27 +01:00
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.