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38 lines
1.2 KiB
38 lines
1.2 KiB
2 months ago
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/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2014 Stefan Agner <stefan@agner.ch>
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*
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* This library is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <libopencm3/cm3/scb.h>
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static inline void pre_main(void)
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{
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/*
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* For Vybrid we need to set the stack pointer manually
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* since the boot ROM has its own stack
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*/
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__asm__ ( \
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"ldr sp,=_stack;" \
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);
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/* Set Vector Table Offset to our memory based vector table */
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SCB_VTOR = (uint32_t)&vector_table;
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/* Enable access to Floating-Point coprocessor. */
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SCB_CPACR |= SCB_CPACR_FULL * (SCB_CPACR_CP10 | SCB_CPACR_CP11);
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}
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