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| author | Anup Patel <anup.patel@wdc.com> | 2020-02-18 09:07:16 +0300 |
|---|---|---|
| committer | Anup Patel <anup@brainfault.org> | 2020-02-19 07:28:45 +0300 |
| commit | bc874e34cecbd1e024ae7be4ec2f34d9cb1fbecb (patch) | |
| tree | 4c373ca6f11d0d6f9f2fd9032ee8b90190563cb5 /lib/sbi/sbi_hart.c | |
| parent | c66543d049d33b94f1915babaed6eb1f90e05f78 (diff) | |
| download | opensbi-bc874e34cecbd1e024ae7be4ec2f34d9cb1fbecb.tar.xz | |
lib: Don't check MIDELEG and MEDELEG at end of delegate_traps()
The MIDELEG and MEDELEG CSR checks at end of delegate_traps() were
added for initial bring-up on SiFive Unleashed and QEMU. These
checks are not required any more and in-future these checks can
cause failures because some of the MIDELEG/MEDELEG bits will be
hard-wired to 0 or 1.
For related discussion, refer github issue:
https://github.com/riscv/opensbi/issues/157
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Diffstat (limited to 'lib/sbi/sbi_hart.c')
| -rw-r--r-- | lib/sbi/sbi_hart.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/lib/sbi/sbi_hart.c b/lib/sbi/sbi_hart.c index dd2f99e..d83008f 100644 --- a/lib/sbi/sbi_hart.c +++ b/lib/sbi/sbi_hart.c @@ -104,11 +104,6 @@ static int delegate_traps(struct sbi_scratch *scratch, u32 hartid) csr_write(CSR_MIDELEG, interrupts); csr_write(CSR_MEDELEG, exceptions); - if ((csr_read(CSR_MIDELEG) & interrupts) != interrupts) - return SBI_EFAIL; - if ((csr_read(CSR_MEDELEG) & exceptions) != exceptions) - return SBI_EFAIL; - return 0; } |