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// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2010-2012
* Texas Instruments, <www.ti.com>
*
* Aneesh V <aneesh@ti.com>
* Tom Rini <trini@ti.com>
*/
#include <common.h>
#include <config.h>
#include <init.h>
#include <log.h>
#include <spl.h>
#include <image.h>
#include <asm/cache.h>
#include <asm/global_data.h>
#include <linux/compiler.h>
#include <asm/mach-types.h>
#ifndef CONFIG_SPL_DM
/* Pointer to as well as the global data structure for SPL */
DECLARE_GLOBAL_DATA_PTR;
/*
* WARNING: This is going away very soon. Don't use it and don't submit
* pafches that rely on it. The global_data area is set up in crt0.S.
*/
gd_t gdata __section(".data");
#endif
/*
* In the context of SPL, board_init_f() prepares the hardware for execution
* from system RAM (DRAM, DDR...). As system RAM may not be available yet,
* board_init_f() must use the current GD to store any data which must be
* passed on to later stages. These data include the relocation destination,
* the future stack, and the future GD location. BSS is cleared after this
* function (and therefore must be accessible).
*
* We provide this version by default but mark it as __weak to allow for
* platforms to do this in their own way if needed. Please see the top
* level U-Boot README "Board Initialization Flow" section for info on what
* to put in this function.
*/
void __weak board_init_f(ulong dummy)
{
}
/*
* This function jumps to an image with argument. Normally an FDT or ATAGS
* image.
*/
#if CONFIG_IS_ENABLED(OS_BOOT)
#ifdef CONFIG_ARM64
void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
{
debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
cleanup_before_linux();
armv8_switch_to_el2((u64)spl_image->arg, 0, 0, 0,
spl_image->entry_point, ES_TO_AARCH64);
}
#else
void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
{
unsigned long machid = 0xffffffff;
#ifdef CONFIG_MACH_TYPE
machid = CONFIG_MACH_TYPE;
#endif
debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
typedef void (*image_entry_arg_t)(int, int, void *)
__attribute__ ((noreturn));
image_entry_arg_t image_entry =
(image_entry_arg_t)(uintptr_t) spl_image->entry_point;
cleanup_before_linux();
image_entry(0, machid, spl_image->arg);
}
#endif /* CONFIG_ARM64 */
#endif
#if CONFIG_IS_ENABLED(OPTEE_IMAGE)
void __noreturn jump_to_image_optee(struct spl_image_info *spl_image)
{
/* flush and turn off caches before jumping to OPTEE */
cleanup_before_linux();
spl_optee_entry(NULL, NULL, spl_image->fdt_addr,
(void *)spl_image->entry_point);
}
#endif
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