6f30e76c61
Newlib and arm-non-eabi-gcc likes to use the FPU by default on Cortex-M4F chips. AS a result, do the right thing and enable the FPU by default. This fixes issues where code is generated which uses the FPU and causes the CPU to hard-fault. This change removes the responsibility of FPU initialization from the application code. This makes the lm4f consistent with other M4+ devices that enable the FPU in core library startup code. Signed-off-by: Karl Palsson <karlp@tweak.net.au>
25 lines
907 B
C
25 lines
907 B
C
/*
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* This file is part of the libopencm3 project.
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*
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* Copyright (C) 2016 Alexandru Gagniuc <mr.nuke.me@gmail.com>
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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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static void pre_main(void)
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{
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/* Enable FPU */
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SCB_CPACR |= SCB_CPACR_FULL * (SCB_CPACR_CP10 | SCB_CPACR_CP11);
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}
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