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stm32g4: turn on FPU in pre_main

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Yep, all M4F need this file added.
This commit is contained in:
Karl Palsson 2020-04-10 14:12:08 +00:00
parent 418b609230
commit 503cebab87
2 changed files with 29 additions and 0 deletions
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2
lib/dispatch/vector_chipset.c
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@ -4,6 +4,8 @@
# include "../stm32/f4/vector_chipset.c"
#elif defined(STM32F7)
# include "../stm32/f7/vector_chipset.c"
#elif defined(STM32G4)
# include "../stm32/g4/vector_chipset.c"
#elif defined(STM32L4)
# include "../stm32/l4/vector_chipset.c"
#elif defined(LM4F)

27
lib/stm32/g4/vector_chipset.c Normal file
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@ -0,0 +1,27 @@
/*
* This file is part of the libopencm3 project.
*
* Copyright (C) 2010 Piotr Esden-Tempski <piotr@esden.net>
* Copyright (C) 2011 Fergus Noble <fergusnoble@gmail.com>
*
* This library is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see <http://www.gnu.org/licenses/>.
*/
#include <libopencm3/cm3/scb.h>
static void pre_main(void)
{
/* Enable access to Floating-Point coprocessor. */
SCB_CPACR |= SCB_CPACR_FULL * (SCB_CPACR_CP10 | SCB_CPACR_CP11);
}