coreboot-kgpe-d16/payloads/libpayload
Meng-Huan Yu c9655468e8 libpayload: Provide API to expose MMU memery ranges for ARM64
Provide get_mmu_ranges() for ARM64 to let payloads could get
MMU ranges for all used memory regions.

BUG=b:171858277
TEST=Build in x86, arm, arm64.
  emerge-zork libpayload depthcharge
  emerge-nyan libpayload depthcharge
  emerge-asurada libpayload depthcharge

Signed-off-by: Meng-Huan Yu <menghuan@google.com>
Change-Id: I39b24aefc9dbe530169b272e839d0e1e7c697742
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48113
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
2020-12-05 09:45:34 +00:00
..
arch libpayload: Provide API to expose MMU memery ranges for ARM64 2020-12-05 09:45:34 +00:00
bin libpayload: Add compiler.h to compiler parameters 2020-11-08 11:37:04 +00:00
configs Delete mainboard/google/cheza 2020-11-12 01:43:09 +00:00
crypto payloads: Drop unneeded empty lines 2020-09-21 16:20:57 +00:00
curses libpayload/curses: Use <stdbool.h> 2020-10-26 06:57:21 +00:00
drivers libpayload/usb: Fix printf format string mismatches in debug messages 2020-11-22 22:34:52 +00:00
gdb
include libpayload: Provide API to expose MMU memery ranges for ARM64 2020-12-05 09:45:34 +00:00
libc lib/libpayload: Replace strapping_ids with new board configuration entry 2020-10-30 15:25:28 +00:00
libcbfs
liblz4
liblzma payloads: Drop unneeded empty lines 2020-09-21 16:20:57 +00:00
libpci libpayload/libpci: Introduce device class attribute in pci_dev 2020-10-17 16:33:55 +00:00
sample
tests
.gitignore .gitignore: Split into subdirectory files 2020-10-30 07:05:27 +00:00
Doxyfile
Kconfig libpayload: Add support for link time optimization 2020-11-02 22:05:02 +00:00
LICENSES
LICENSE_GPL
Makefile
Makefile.inc libpayload: Add compiler.h to compiler parameters 2020-11-08 11:37:04 +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.