diff options
Diffstat (limited to 'gitlab/issues/target_riscv/host_missing/accel_missing/1978.toml')
| -rw-r--r-- | gitlab/issues/target_riscv/host_missing/accel_missing/1978.toml | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/gitlab/issues/target_riscv/host_missing/accel_missing/1978.toml b/gitlab/issues/target_riscv/host_missing/accel_missing/1978.toml new file mode 100644 index 00000000..ce97941e --- /dev/null +++ b/gitlab/issues/target_riscv/host_missing/accel_missing/1978.toml @@ -0,0 +1,17 @@ +id = 1978 +title = "sifive_e : erroneous CLINT frequency" +state = "closed" +created_at = "2023-11-10T15:31:26.868Z" +closed_at = "2023-11-22T16:50:14.424Z" +labels = ["target: riscv"] +url = "https://gitlab.com/qemu-project/qemu/-/issues/1978" +host-os = "MacOS Sonoma" +host-arch = "Arm" +qemu-version = "QEMU emulator version 8.1.2" +guest-os = "Bare metal" +guest-arch = "RISCV32" +description = """CLINT's `mtime` updates at a clock frequency of [10 MHz](https://gitlab.com/qemu-project/qemu/-/blob/master/hw/riscv/sifive_e.c?ref_type=heads#L228), whereas [SiFive documentation](https://cdn.sparkfun.com/assets/7/f/0/2/7/fe310-g002-manual-v19p05.pdf?_gl=1*w2ieef*_ga*MTcyNDI2MjM0Ny4xNjk2ODcwNTM3*_ga_T369JS7J9N*MTY5Njg3MDUzNy4xLjAuMTY5Njg3MDUzNy42MC4wLjA.) shows that its clock frequency is 32.768 kHz (i.e., the RTC clock). + +This difference leads to unexpected timing behavior. Due to the difference, it can even trigger multiple nested interrupts as the IRQ routine is not able to return before a new timer interrupt is triggered.""" +reproduce = "n/a" +additional = "n/a" |