coreboot-kgpe-d16/payloads/libpayload
Kyösti Mälkki 48e9eb89fa libpayload: Fix to properly disable serial console
With coreboot builds with serial console disabled, there is no
CB_TAG_SERIAL entry in coreboot tables. We ended up with
lib_sysinfo.serial == NULL and serial_hardware_is_present == 1.

Change-Id: I9a2fc0b55bf77769f2f2bfbb2b5476bee8083f7d
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: http://review.coreboot.org/5723
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
2014-05-17 14:56:06 +02:00
..
arch libpayload: Parse CBMEM ACPI GNVS pointer 2014-01-30 05:49:13 +01:00
bin libpayload/lpgcc: Add curses include path. 2014-01-19 15:05:20 +01:00
configs libpayload: update defconfig 2014-01-08 13:24:43 +01:00
crypto libpayload: fix wrong endian assumption in sha1.c 2013-11-24 05:40:19 +01:00
curses libpayload: Use longer delay in tinycurses' wgetch() 2013-06-26 20:51:07 +02:00
drivers libpayload: Fix to properly disable serial console 2014-05-17 14:56:06 +02:00
include libpayload/endian.h: Provide alignment-agnostic enc/dec bytestreams. 2014-04-26 15:03:43 +02:00
libc libpayload: Include hexdump.c in the Makefile so it gets built 2013-12-21 08:18:43 +01:00
libcbfs lib/cbfs_core.c: Supply size of file as well in cbfs_get_file_content 2014-01-12 17:41:02 +01:00
liblzma
libpci
sample libpayload/sample: Use settings from .xcompile file to build. 2013-10-17 01:54:43 +02:00
tests
util libpayload: Fix xcompile 2013-11-25 23:36:27 +01:00
Config.in libpayload: Drop PowerPC architecture 2013-11-26 00:08:39 +01:00
Doxyfile
LICENSES
Makefile Revert "Makefile: Check $CC variable returned from xcompile is not empty." 2014-01-26 15:46:44 +01:00
Makefile.inc libpayload: add junit.xml build target 2014-01-08 13:24:45 +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.