coreboot-kgpe-d16/payloads/libpayload/README
Paul Menzel 59e2113670 Use www.coreboot.org over coreboot.org
<https://coreboot.org> is redirected to <https://www.coreboot.org>.

```
$ curl -I https://coreboot.org
HTTP/1.1 301 Moved Permanently
Server: nginx/1.8.1
Date: Mon, 05 Jun 2017 10:41:33 GMT
Content-Type: text/html
Content-Length: 184
Connection: keep-alive
Location: https://www.coreboot.org/

```

So use the command below to use the final location to save a redirect.

```
$ git grep -l https://coreboot.org \
| xargs sed -i 's,https://coreboot.org,https://www.coreboot.org,g'
```

Change-Id: I4176c20ef31399f0063b41e3a0029cca0c1b0ff3
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: https://review.coreboot.org/20035
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
2017-06-07 12:05:44 +02:00

65 lines
1.6 KiB
Text

-------------------------------------------------------------------------------
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/p/coreboot.git
$ cd coreboot/payloads/libpayload
$ make menuconfig
$ make
$ sudo make install (optional, will install into /opt per default)
As libpayload is for 32bit x86 systems only, you might have to install the
32bit libgcc version, otherwise your payloads will fail to compile.
On Debian systems you'd do 'apt-get install gcc-multilib' for example.
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.