coreboot-kgpe-d16/payloads/libpayload
Nico Huber 1f2b5fb201 libpayload/keyboard: Reset to scancode set #2 on exit
If we select scancode set #1 and keep that, it can confuse Linux
with keyboards that don't return to set #2 when asked to load the
defaults. This happens for instance with various integrated Think-
Pad keyboards but was also seen with an external PS/2 one.

The chosen configuration, scancode set #2 without translation, seems
to be the default for many systems. So we can expect other payloads
and kernels to work with it.

Change-Id: I28d74590e9f04d32bb2bbd461b67f15014f927ec
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/47594
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2021-04-18 20:45:23 +00:00
..
arch payloads/libpayload/arch/arm64/mmu.c: Fix typo in comment 2021-02-05 09:40:39 +00:00
bin libpayload/lpgcc: Drop redundant linker path 2021-01-11 23:33:03 +00:00
configs libpayload: Support herobrine 2021-04-15 19:08:23 +00:00
crypto
curses libpayload/curses: Use <stdbool.h> 2020-10-26 06:57:21 +00:00
drivers libpayload/keyboard: Reset to scancode set #2 on exit 2021-04-18 20:45:23 +00:00
gdb
include libpayload/storage: Add NVMe driver 2021-04-07 10:58:04 +00:00
libc coreboot tables: Add SPI flash memory map windows to coreboot tables 2020-12-08 22:56:09 +00:00
libcbfs
liblz4
liblzma
libpci
sample libpayload: Move .xcompile into $(obj) 2021-01-01 21:30:44 +00:00
tests
.gitignore .gitignore: Split into subdirectory files 2020-10-30 07:05:27 +00:00
Doxyfile
Kconfig libpayload/keyboard: Revise scancode set and translation config 2020-12-23 03:29:32 +00:00
LICENSES
LICENSE_GPL
Makefile libpayload: Move .xcompile into $(obj) 2021-01-01 21:30:44 +00:00
Makefile.inc libpayload: Keep a copy of .config in the build dir 2021-01-01 21:31:29 +00:00
Makefile.payload libpayload: Add a Makefile for in-tree payloads 2021-02-07 16:22:45 +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.