Gedare Bloom created a merge request: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1086
Project:Branches: gedare/rtems:riscv-smode to rtems/rtos/rtems:main Author: Gedare Bloom Assignee: Gedare Bloom ## Summary Updates #3337 Adds a new CPU configuration option `RISCV_USE_S_MODE` that enables booting and running RTEMS using the supervisor privileged mode (s-mode) instead of the machine privileged mode (m-mode). This is implemented only for the generic `riscv` BSP variants and works only for uniprocessor execution with the `Sstc` extension enabled (for s-mode timer access). We need to port Supervisor Binary Interface (SBI) calls to access the m-mode legacy timer, IPIs to support SMP, and console input. It can be run using `qemu-system-riscv64 -M virt -nographic -kernel build/riscv/rv64imafdc_s/testsuites/samples/hello.exe` with config.ini: ``` [riscv/rv64imafdc_s] INHERIT = rv64imafdc RISCV_RAM_REGION_BEGIN = 0x84000000 RISCV_RAM_REGION_SIZE = 0x03000000 RISCV_USE_S_MODE = True ``` There are about mixed failures whether using s-mode or m-mode. Test results with S-Mode: ``` Passed: 644 Failed: 17 User Input: 6 Expected Fail: 24 Indeterminate: 0 Benchmark: 3 Timeout: 6 Test too long: 0 Invalid: 0 Wrong Version: 0 Wrong Build: 0 Wrong Tools: 0 Wrong Header: 0 ------------------ Total: 700 Failures: dl01.exe dl02.exe dl05.exe dl06.exe dl07.exe dl08.exe dl09.exe dl11.exe dl12.exe fsfatfsformat01.exe psx09.exe psxstat.exe sp69.exe stringto01.exe tftpfs.exe ts-validation-one-cpu-0.exe ttest01.exe ... Timeouts: spconsole01.exe tm27.exe ts-performance-no-clock-0.exe ts-unit-no-clock-0.exe ts-validation-intr.exe ts-validation-no-clock-0.exe ``` Test results without S-Mode: ``` Passed: 648 Failed: 19 User Input: 6 Expected Fail: 24 Indeterminate: 0 Benchmark: 3 Timeout: 0 Test too long: 0 Invalid: 0 Wrong Version: 0 Wrong Build: 0 Wrong Tools: 0 Wrong Header: 0 ------------------ Total: 700 Failures: dl01.exe dl02.exe dl05.exe dl06.exe dl07.exe dl08.exe dl09.exe dl11.exe dl12.exe fsfatfsformat01.exe psx09.exe psx12.exe psxstat.exe sp69.exe spcpucounter01.exe stringto01.exe tftpfs.exe ts-validation-intr.exe ttest01.exe ``` ## Generative AI <!-- If you have used AI please use the "AI Contribution" template otherwise leave this blank see our fulls statement at https://www.rtems.org/generative-ai/--> <!-- Default settings, if it is a dropdown it will set after submission --> -- View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/merge_requests/1086 You're receiving this email because of your account on gitlab.rtems.org.
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