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libpayload: Provide selfboot function.

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The calling convention of payload entry function is different by architecture.
For example, X86 takes no arguments and ARM needs first param to be a
cb_header_ptr*.

To help payloads load and execute other payloads easily and correctly, we should
provide the selfboot() function in libpayload, using same prototype as defined
in coreboot environment.

BUG=none
TEST=emerge-nyan libpayload # pass
BRANCH=none

Original-Change-Id: I8f1cb2c0df788794b2f6f7f5500a3910328a4f84
Original-Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/199503
Original-Reviewed-by: Stefan Reinauer <reinauer@chromium.org>
(cherry picked from commit 1e916cf021ce68886eb9668982c392eadedc7b7e)
Signed-off-by: Marc Jones <marc.jones@se-eng.com>

Change-Id: I7279ef27f49ef581d25a455dd8f1f2f7f1ba58cb
Reviewed-on: http://review.coreboot.org/7907
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins)
This commit is contained in:
Hung-Te Lin
2014-05-13 22:33:12 +08:00
committed by Marc Jones
parent 1a3675ec02
commit 6f98fc30fd
5 changed files with 66 additions and 2 deletions
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3
payloads/libpayload/include/cbfs.h
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@ -82,8 +82,7 @@ void *cbfs_simple_buffer_unmap(struct cbfs_simple_buffer *buffer,
int run_address(void *f);
/* Defined in src/lib/selfboot.c */
struct lb_memory;
int selfboot(struct lb_memory *mem, struct cbfs_payload *payload);
void selfboot(void *entry);
/* Defined in individual arch / board implementation. */
int init_default_cbfs_media(struct cbfs_media *media);