u-boot/lib/asm-offsets.c
Albert ARIBAUD e05e5de7fa arm: move C runtime setup code in crt0.S
Move all the C runtime setup code from every start.S
in arch/arm into arch/arm/lib/crt0.S. This covers
the code sequence from setting up the initial stack
to calling into board_init_r().

Also, rewrite the C runtime setup and make functions
board_init_*() and relocate_code() behave according to
normal C semantics (no jumping across the C stack any
more, etc).

Some SPL targets had to be touched because they use
start.S explicitly or for some reason; the relevant
maintainers and custodians are cc:ed.

Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
2013-01-08 22:14:50 +01:00

47 lines
1.2 KiB
C

/*
* Adapted from Linux v2.6.36 kernel: arch/powerpc/kernel/asm-offsets.c
*
* This program is used to generate definitions needed by
* assembly language modules.
*
* We use the technique used in the OSF Mach kernel code:
* generate asm statements containing #defines,
* compile this file to assembler, and then extract the
* #defines from the assembly-language output.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <common.h>
#include <linux/kbuild.h>
int main(void)
{
/* Round up to make sure size gives nice stack alignment */
DEFINE(GENERATED_GBL_DATA_SIZE,
(sizeof(struct global_data) + 15) & ~15);
DEFINE(GENERATED_BD_INFO_SIZE,
(sizeof(struct bd_info) + 15) & ~15);
DEFINE(GD_SIZE, sizeof(struct global_data));
DEFINE(GD_BD, offsetof(struct global_data, bd));
#if defined(CONFIG_ARM)
DEFINE(GD_RELOCADDR, offsetof(struct global_data, relocaddr));
DEFINE(GD_RELOC_OFF, offsetof(struct global_data, reloc_off));
DEFINE(GD_START_ADDR_SP, offsetof(struct global_data, start_addr_sp));
#endif
return 0;
}