1 // SPDX-License-Identifier: GPL-2.0+
3 * (C) Copyright 2010-2012
4 * Texas Instruments, <www.ti.com>
6 * Aneesh V <aneesh@ti.com>
7 * Tom Rini <trini@ti.com>
16 #include <asm/cache.h>
17 #include <asm/global_data.h>
18 #include <linux/compiler.h>
19 #include <asm/mach-types.h>
22 /* Pointer to as well as the global data structure for SPL */
23 DECLARE_GLOBAL_DATA_PTR;
26 * WARNING: This is going away very soon. Don't use it and don't submit
27 * pafches that rely on it. The global_data area is set up in crt0.S.
29 gd_t gdata __section(".data");
33 * In the context of SPL, board_init_f() prepares the hardware for execution
34 * from system RAM (DRAM, DDR...). As system RAM may not be available yet,
35 * board_init_f() must use the current GD to store any data which must be
36 * passed on to later stages. These data include the relocation destination,
37 * the future stack, and the future GD location. BSS is cleared after this
38 * function (and therefore must be accessible).
40 * We provide this version by default but mark it as __weak to allow for
41 * platforms to do this in their own way if needed. Please see the top
42 * level U-Boot README "Board Initialization Flow" section for info on what
43 * to put in this function.
45 void __weak board_init_f(ulong dummy)
50 * This function jumps to an image with argument. Normally an FDT or ATAGS
53 #if CONFIG_IS_ENABLED(OS_BOOT)
55 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
57 debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
58 cleanup_before_linux();
59 armv8_switch_to_el2((u64)spl_image->arg, 0, 0, 0,
60 spl_image->entry_point, ES_TO_AARCH64);
63 void __noreturn jump_to_image_linux(struct spl_image_info *spl_image)
65 unsigned long machid = 0xffffffff;
66 #ifdef CONFIG_MACH_TYPE
67 machid = CONFIG_MACH_TYPE;
70 debug("Entering kernel arg pointer: 0x%p\n", spl_image->arg);
71 typedef void (*image_entry_arg_t)(int, int, void *)
72 __attribute__ ((noreturn));
73 image_entry_arg_t image_entry =
74 (image_entry_arg_t)(uintptr_t) spl_image->entry_point;
75 cleanup_before_linux();
76 image_entry(0, machid, spl_image->arg);
78 #endif /* CONFIG_ARM64 */
81 #if CONFIG_IS_ENABLED(OPTEE_IMAGE)
82 void __noreturn jump_to_image_optee(struct spl_image_info *spl_image)
84 /* flush and turn off caches before jumping to OPTEE */
85 cleanup_before_linux();
87 spl_optee_entry(NULL, NULL, spl_image->fdt_addr,
88 (void *)spl_image->entry_point);