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| author | Scott Johnson <scottj@sifive.com> | 2016-12-06 11:00:55 -0800 |
|---|---|---|
| committer | Scott Johnson <scottj@sifive.com> | 2016-12-06 11:00:55 -0800 |
| commit | 697fadd2946dafaf84bc70413ba26116e872bc5f (patch) | |
| tree | 23c461dc86a5bec284d0b12b27e7b7704c288355 /bsp/env | |
| parent | 66c882e380656d45dec9019255d7a1106bb1f5ff (diff) | |
Enable FPU in MSTATUS CSR during init
This way, chips with FPU can run FPU instructions without taking
exceptions.
I've confirmed that dhrystone still runs successfully even on chips
with no FPU.
Diffstat (limited to 'bsp/env')
| -rw-r--r-- | bsp/env/freedom-e300-hifive1/init.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/bsp/env/freedom-e300-hifive1/init.c b/bsp/env/freedom-e300-hifive1/init.c index d085f6c..be76f90 100644 --- a/bsp/env/freedom-e300-hifive1/init.c +++ b/bsp/env/freedom-e300-hifive1/init.c @@ -182,6 +182,7 @@ void _init() printf("core freq at %d Hz\n", get_cpu_freq()); write_csr(mtvec, &handle_trap); + write_csr(mstatus, MSTATUS_FS); // enable FPU _exit(main(0, NULL)); } |