coreboot-kgpe-d16/payloads/libpayload
Jakub Czapiga 8fac662f30 libpayload/libc/fmap: Implement new FlashMap API
This patch introduces new FlashMap API, the fmap_locate_area().
It works on cached FlashMap provided in lib_sysinfo.fmap_cache.

Change-Id: Idbf9016ce73aa58e17f3ee19920ab83dc6c25abb
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59494
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
2021-12-23 14:37:42 +00:00
..
arch libpayload: Add -Wno-address-of-packed-member for ARCH_MOCK 2021-12-20 17:47:50 +00:00
bin libpayload: Add commonlib/bsd include path to lpgcc 2021-12-23 14:37:04 +00:00
configs libpayload: Add unit-tests framework and first test case 2021-10-18 12:33:49 +00:00
crypto
curses libpayload: curses: Only call `serial_set_color()` with initialized values 2021-07-14 08:22:05 +00:00
drivers libpayload: cbgfx: Clear screen by memcpy 2021-10-07 14:11:56 +00:00
gdb
include libpayload/libc/fmap: Implement new FlashMap API 2021-12-23 14:37:42 +00:00
libc libpayload/libc/fmap: Implement new FlashMap API 2021-12-23 14:37:42 +00:00
libcbfs
liblz4
liblzma
libpci
sample libpayload: Add mock architecture 2021-10-11 12:59:57 +00:00
tests libpayload/libc/fmap: Implement new FlashMap API 2021-12-23 14:37:42 +00:00
.gitignore
Doxyfile
Kconfig libpayload: Add mock architecture 2021-10-11 12:59:57 +00:00
LICENSES
LICENSE_GPL
Makefile libpayload/Makefile: Improve object files list creation 2021-12-08 14:42:25 +00:00
Makefile.inc libpayload: Add include/commonlib/bsd to installed headers 2021-12-08 14:42:02 +00:00
Makefile.payload util/kconfig: Uprev to Linux 5.13's kconfig 2021-07-13 20:28:14 +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.