coreboot-kgpe-d16/payloads/libpayload
Elyes HAOUAS c2092569d5 Makefile: Remove romcc
Change-Id: I2fe7fa8b23da3b909adc2b8bce59304acfb5b807
Signed-off-by: Elyes HAOUAS <ehaouas@noos.fr>
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/37788
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Jacob Garber <jgarber1@ualberta.ca>
2019-12-27 08:59:59 +00:00
..
arch printf: Automatically prefix %p with 0x 2019-12-11 11:38:59 +00:00
bin Remove MIPS architecture 2019-11-20 10:10:48 +00:00
configs trogdor: libpayload USB support 2019-12-05 17:57:31 +00:00
crypto
curses libpayload: Enable -Wimplicit-fallthrough 2019-07-21 17:17:42 +00:00
drivers libpayload/drivers/i8042: add error messages to i8042_probe 2019-12-20 17:43:17 +00:00
gdb
include libpayload: Implement reading from CBMEM console 2019-12-16 09:47:38 +00:00
libc lib/coreboot_table: Add CBMEM_ID_VBOOT_WORKBUF pointer to coreboot table 2019-12-02 13:00:45 +00:00
libcbfs printf: Automatically prefix %p with 0x 2019-12-11 11:38:59 +00:00
liblz4
liblzma
libpci
sample Remove MIPS architecture 2019-11-20 10:10:48 +00:00
tests
Doxyfile
Kconfig libpayload/drivers/i8042: Remove obsolete flag 2019-12-12 22:03:31 +00:00
LICENSES
LICENSE_GPL
Makefile Makefile: Remove romcc 2019-12-27 08:59:59 +00:00
Makefile.inc Remove MIPS architecture 2019-11-20 10:10:48 +00:00
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 https://www.coreboot.org for details on coreboot.


Installation
------------

 $ git clone https://review.coreboot.org/coreboot.git

 $ cd coreboot/payloads/libpayload

 $ make menuconfig

 $ make

 $ make install (optional, will install into ./install per default)

On x86 systems, libpayload will always be 32-bit even if your host OS runs
in 64-bit, so you might have to install the 32-bit libgcc version.
On Debian systems you'd do 'apt-get install gcc-multilib' for example.

Run 'make distclean' before switching boards. This command will remove
your current .config file, so you need 'make menuconfig' again or
'make defconfig' in order to set up configuration. Default configuration
is based on 'configs/defconfig'. See the configs/ directory for examples
of configuration.


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 https://www.coreboot.org/Libpayload.

For additional information, patches, and discussions, please join the
coreboot mailing list at https://www.coreboot.org/Mailinglist, where most
libpayload developers are subscribed.


Copyright and License
---------------------

See LICENSES.