60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*
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* Code shared between SPL and U-Boot proper
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*
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* Copyright (c) 2015 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* It isn't trivial to figure out whether memcpy() exists. The arch-specific
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* memcpy() is not normally available in SPL due to code size.
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*/
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#if !defined(CONFIG_SPL_BUILD) || \
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(defined(CONFIG_SPL_LIBGENERIC_SUPPORT) && \
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!defined(CONFIG_USE_ARCH_MEMSET))
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#define _USE_MEMCPY
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#endif
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/* Unfortunately x86 can't compile this code as gd cannot be assigned */
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#ifndef CONFIG_X86
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__weak void arch_setup_gd(struct global_data *gd_ptr)
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{
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gd = gd_ptr;
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}
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#endif /* !CONFIG_X86 */
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ulong board_init_f_mem(ulong top)
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{
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struct global_data *gd_ptr;
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#ifndef _USE_MEMCPY
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int *ptr;
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#endif
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/* Leave space for the stack we are running with now */
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top -= 0x40;
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top -= sizeof(struct global_data);
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top = ALIGN(top, 16);
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gd_ptr = (struct global_data *)top;
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#ifdef _USE_MEMCPY
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memset(gd_ptr, '\0', sizeof(*gd));
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#else
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for (ptr = (int *)gd_ptr; ptr < (int *)(gd_ptr + 1); )
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*ptr++ = 0;
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#endif
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arch_setup_gd(gd_ptr);
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#if defined(CONFIG_SYS_MALLOC_F)
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top -= CONFIG_SYS_MALLOC_F_LEN;
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gd->malloc_base = top;
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#endif
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return top;
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}
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