u-boot-brain/common/init/board_init.c

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/*
* Code shared between SPL and U-Boot proper
*
* Copyright (c) 2015 Google, Inc
* Written by Simon Glass <sjg@chromium.org>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
DECLARE_GLOBAL_DATA_PTR;
/* Unfortunately x86 can't compile this code as gd cannot be assigned */
#ifndef CONFIG_X86
__weak void arch_setup_gd(struct global_data *gd_ptr)
{
gd = gd_ptr;
}
#endif /* !CONFIG_X86 */
ulong board_init_f_mem(ulong top)
{
struct global_data *gd_ptr;
/* Leave space for the stack we are running with now */
top -= 0x40;
top -= sizeof(struct global_data);
top = ALIGN(top, 16);
gd_ptr = (struct global_data *)top;
memset(gd_ptr, '\0', sizeof(*gd));
arch_setup_gd(gd_ptr);
#if defined(CONFIG_SYS_MALLOC_F)
top -= CONFIG_SYS_MALLOC_F_LEN;
gd->malloc_base = top;
#endif
return top;
}