mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-19 11:18:28 +00:00
6507f133f3
In SPL (CONFIG_SPL_FRAMEWORK) board_init_f must setup the stack pointer, clear the BSS and call board_init_r. We mark this as weak as some platforms may need to perform additional initalization at this point. We provide a gd that we know will be in a usable location, once the BSS has been cleared to help with this as well. Finally, we no longer call relocate_code so remove that from the armv7 version. Next, both board_init_f and jump_to_image_linux are going to be inherently arch-specific, so move these versions to arch/arm/lib/spl.c Signed-off-by: Tom Rini <trini@ti.com>
72 lines
2.2 KiB
C
72 lines
2.2 KiB
C
/*
|
|
* (C) Copyright 2010-2012
|
|
* Texas Instruments, <www.ti.com>
|
|
*
|
|
* Aneesh V <aneesh@ti.com>
|
|
* Tom Rini <trini@ti.com>
|
|
*
|
|
* See file CREDITS for list of people who contributed to this
|
|
* project.
|
|
*
|
|
* 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.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
|
* MA 02111-1307 USA
|
|
*/
|
|
#include <common.h>
|
|
#include <config.h>
|
|
#include <spl.h>
|
|
#include <image.h>
|
|
#include <linux/compiler.h>
|
|
|
|
/* Pointer to as well as the global data structure for SPL */
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
gd_t gdata __attribute__ ((section(".data")));
|
|
|
|
/*
|
|
* In the context of SPL, board_init_f must ensure that any clocks/etc for
|
|
* DDR are enabled, ensure that the stack pointer is valid, clear the BSS
|
|
* and call board_init_f. We provide this version by default but mark it
|
|
* as __weak to allow for platforms to do this in their own way if needed.
|
|
*/
|
|
void __weak board_init_f(ulong dummy)
|
|
{
|
|
/* Set the stack pointer. */
|
|
asm volatile("mov sp, %0\n" : : "r"(CONFIG_SPL_STACK));
|
|
|
|
/* Clear the BSS. */
|
|
memset(__bss_start, 0, __bss_end__ - __bss_start);
|
|
|
|
/* Set global data pointer. */
|
|
gd = &gdata;
|
|
|
|
board_init_r(NULL, 0);
|
|
}
|
|
|
|
/*
|
|
* This function jumps to an image with argument. Normally an FDT or ATAGS
|
|
* image.
|
|
* arg: Pointer to paramter image in RAM
|
|
*/
|
|
#ifdef CONFIG_SPL_OS_BOOT
|
|
void __noreturn jump_to_image_linux(void *arg)
|
|
{
|
|
debug("Entering kernel arg pointer: 0x%p\n", arg);
|
|
typedef void (*image_entry_arg_t)(int, int, void *)
|
|
__attribute__ ((noreturn));
|
|
image_entry_arg_t image_entry =
|
|
(image_entry_arg_t) spl_image.entry_point;
|
|
cleanup_before_linux();
|
|
image_entry(0, CONFIG_MACH_TYPE, arg);
|
|
}
|
|
#endif
|