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