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author | Jonathan Neuschäfer <j.neuschaefer@gmx.net> | 2018-10-10 14:22:49 +0200 |
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committer | Patrick Georgi <pgeorgi@google.com> | 2018-12-19 05:46:07 +0000 |
commit | f3d8580cce06608685e1389f4863acf24c452278 (patch) | |
tree | aa465b06b574e9fdf4b599aaa147ce4dc00702cf /src/arch/riscv/virtual_memory.c | |
parent | c9add1462957dd1b1f28c3ed7d3755073bf297df (diff) | |
download | coreboot-f3d8580cce06608685e1389f4863acf24c452278.tar.xz |
arch/riscv: Don't set FPU state to "dirty"
Quoting from the RISC-V Privileged Architecture manual version 1.10,
chapter 3.1.11:
The FS and XS fields use the same status encoding as shown in Table
3.3, with the four possible status values being Off, Initial, Clean,
and Dirty.
Status FS Meaning XS Meaning
0 Off All off
1 Initial None dirty of clean, some on
2 Clean None dirty, some clean
3 Dirty Some dirty
Change-Id: If0225044ed52215ce64ea979d120014e02d4ce37
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-on: https://review.coreboot.org/c/28987
Reviewed-by: Philipp Hug <philipp@hug.cx>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/arch/riscv/virtual_memory.c')
-rw-r--r-- | src/arch/riscv/virtual_memory.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/src/arch/riscv/virtual_memory.c b/src/arch/riscv/virtual_memory.c index 0061847c01..2f13ecb398 100644 --- a/src/arch/riscv/virtual_memory.c +++ b/src/arch/riscv/virtual_memory.c @@ -40,11 +40,6 @@ static int delegate = 0 void mstatus_init(void) { - uintptr_t ms = 0; - - ms = INSERT_FIELD(ms, MSTATUS_FS, 3); - write_csr(mstatus, ms); - // clear any pending timer interrupts. clear_csr(mip, MIP_STIP | MIP_SSIP); |