1 /* 2 * (C) Copyright 2010-2012 3 * Texas Instruments, <www.ti.com> 4 * 5 * Aneesh V <aneesh@ti.com> 6 * Tom Rini <trini@ti.com> 7 * 8 * SPDX-License-Identifier: GPL-2.0+ 9 */ 10 #include <common.h> 11 #include <config.h> 12 #include <spl.h> 13 #include <image.h> 14 #include <linux/compiler.h> 15 16 /* Pointer to as well as the global data structure for SPL */ 17 DECLARE_GLOBAL_DATA_PTR; 18 gd_t gdata __attribute__ ((section(".data"))); 19 20 /* 21 * In the context of SPL, board_init_f must ensure that any clocks/etc for 22 * DDR are enabled, ensure that the stack pointer is valid, clear the BSS 23 * and call board_init_f. We provide this version by default but mark it 24 * as __weak to allow for platforms to do this in their own way if needed. 25 */ 26 void __weak board_init_f(ulong dummy) 27 { 28 /* Clear the BSS. */ 29 memset(__bss_start, 0, __bss_end - __bss_start); 30 31 /* Set global data pointer. */ 32 gd = &gdata; 33 34 board_init_r(NULL, 0); 35 } 36 37 /* 38 * This function jumps to an image with argument. Normally an FDT or ATAGS 39 * image. 40 * arg: Pointer to paramter image in RAM 41 */ 42 #ifdef CONFIG_SPL_OS_BOOT 43 void __noreturn jump_to_image_linux(void *arg) 44 { 45 unsigned long machid = 0xffffffff; 46 #ifdef CONFIG_MACH_TYPE 47 machid = CONFIG_MACH_TYPE; 48 #endif 49 50 debug("Entering kernel arg pointer: 0x%p\n", arg); 51 typedef void (*image_entry_arg_t)(int, int, void *) 52 __attribute__ ((noreturn)); 53 image_entry_arg_t image_entry = 54 (image_entry_arg_t) spl_image.entry_point; 55 cleanup_before_linux(); 56 image_entry(0, machid, arg); 57 } 58 #endif 59