coreboot-kgpe-d16/payloads/libpayload
Nico Huber bda38eece8 libpayload: Check for CBFS_DEFAULT_MEDIA in cbfs_get_file_content()
The error-prone interface of cbfs_get_file_content() led to another
possible NULL dereferencing. So check for CBFS_DEFAULT_MEDIA here
like the other functions do.

Change-Id: Ib8732160d389e9ecceb44f28be0e7de9a1d66e04
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: http://review.coreboot.org/11796
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
2015-10-05 15:23:54 +00:00
..
arch arm64: mmu: Prevent CPU prefetch instructions from device memory 2015-09-28 09:36:32 +00:00
bin arm64: xcompile: Add support for A53 erratum 843419 2015-08-28 06:46:09 +00:00
configs libpayload: Veyron configs unification 2015-08-04 08:06:45 +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: usb: dwc2: check device connect state before enable channel 2015-09-17 14:18:30 +00:00
gdb Remove address from GPLv2 headers 2015-05-21 20:50:25 +02:00
include arm64: mmu: Prevent CPU prefetch instructions from device memory 2015-09-28 09:36:32 +00:00
libc libpayload: Fix default_memmove() implementation 2015-08-19 16:35:08 +00:00
libcbfs libpayload: Check for CBFS_DEFAULT_MEDIA in cbfs_get_file_content() 2015-10-05 15:23:54 +00:00
liblz4 libpayload: lz4: Add output overrun check to incompressible case 2015-07-21 21:27:42 +02:00
liblzma lzma: Return correct amount of decompressed bytes 2015-07-06 09:40:37 +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
Doxyfile Run doxygen -u on doxygen configuration files 2010-06-28 10:40:38 +00:00
Kconfig libpayload: Do not gate USB_DWC2 on USB_HID 2015-08-14 15:17:36 +02:00
LICENSES libpayload: Add LZ4 decompression algorithm 2015-07-09 00:10:16 +02:00
LICENSE_GPL libpayload: Introduce new Kconfig to explicitly allow GPL code 2015-01-09 07:06:27 +01:00
Makefile libpayload: Add missing autoconf dependency 2015-09-10 09:18:12 +00:00
Makefile.inc libpayload: Use CONFIG_LP_CCACHE instead of CONFIG_CCACHE 2015-08-09 21:02:37 +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.