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 19 /* 20 * WARNING: This is going away very soon. Don't use it and don't submit 21 * pafches that rely on it. The global_data area is set up in crt0.S. 22 */ 23 gd_t gdata __attribute__ ((section(".data"))); 24 25 /* 26 * In the context of SPL, board_init_f must ensure that any clocks/etc for 27 * DDR are enabled, ensure that the stack pointer is valid, clear the BSS 28 * and call board_init_f. We provide this version by default but mark it 29 * as __weak to allow for platforms to do this in their own way if needed. 30 */ 31 void __weak board_init_f(ulong dummy) 32 { 33 /* Clear the BSS. */ 34 memset(__bss_start, 0, __bss_end - __bss_start); 35 36 /* TODO: Remove settings of the global data pointer here */ 37 gd = &gdata; 38 39 board_init_r(NULL, 0); 40 } 41 42 /* 43 * This function jumps to an image with argument. Normally an FDT or ATAGS 44 * image. 45 * arg: Pointer to paramter image in RAM 46 */ 47 #ifdef CONFIG_SPL_OS_BOOT 48 void __noreturn jump_to_image_linux(void *arg) 49 { 50 unsigned long machid = 0xffffffff; 51 #ifdef CONFIG_MACH_TYPE 52 machid = CONFIG_MACH_TYPE; 53 #endif 54 55 debug("Entering kernel arg pointer: 0x%p\n", arg); 56 typedef void (*image_entry_arg_t)(int, int, void *) 57 __attribute__ ((noreturn)); 58 image_entry_arg_t image_entry = 59 (image_entry_arg_t) spl_image.entry_point; 60 cleanup_before_linux(); 61 image_entry(0, machid, arg); 62 } 63 #endif 64