coreboot-kgpe-d16/payloads/libpayload
Felix Singer 74b4bd0e92 tree: Replace `egrep` with `grep -E`
For compatibility reasons, egrep is just a wrapper around grep today.
Thus, replace it with `grep -E`.

Change-Id: Ief08a22e4cd7211a3fee278492c95d37f9e058fa
Signed-off-by: Felix Singer <felix.singer@secunet.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74171
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
2023-04-06 19:54:44 +00:00
..
arch commonlib/bsd, libpayload: Do not include helpers.h in stddef.h 2023-02-16 17:55:37 +00:00
bin libpayload: bin/lpgcc allow to call without files 2023-03-07 17:10:36 +00:00
configs libpayload: Enable PCIe driver for sc7280 2022-08-01 18:04:54 +00:00
crypto
curses tree: Replace `egrep` with `grep -E` 2023-04-06 19:54:44 +00:00
drivers libpayload: Fix compiler warnings 2022-11-21 21:08:30 +00:00
gdb
include libpayload: strings.h: Use builtin __ffs instead of included one 2023-03-07 17:11:05 +00:00
libc libpayload/string: add strndup() function 2023-02-16 17:54:51 +00:00
libcbfs cbfs/vboot: Adapt to new vb2_digest API 2022-09-02 23:51:29 +00:00
liblz4
liblzma
libpci
sample libpayload: Add mock architecture 2021-10-11 12:59:57 +00:00
tests tests: Add support for tests build failures detection 2022-09-21 14:06:42 +00:00
vboot libpayload: Add VBOOT_SHA_ARMV8_CE config 2023-02-16 15:04:24 +00:00
.gitignore
Doxyfile
Kconfig libpayload/pci: Add pci_map_bus function for Qualcomm platform 2022-08-01 18:04:54 +00:00
LICENSES
LICENSE_GPL
Makefile libpayload: Install vboot headers and add include paths to lpgcc 2022-01-15 00:22:41 +00:00
Makefile.inc libpayload/Makefile.inc: Initialize vboot submodule 2022-06-20 13:54:31 +00:00
Makefile.payload libpayload/Makefile.payload: Fix CFLAGS 2022-06-15 18:06:39 +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.