66 lines
3.1 KiB
Plaintext
66 lines
3.1 KiB
Plaintext
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*** Variables ***
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${starting_pc} 0x80000000
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# Set CLIC mode in MTVEC
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# and write to MSTATUS to check if bits are mirrored in MCAUSE
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# needs to put desired value to A0 beforehand
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${PROG_MSTATUS} SEPARATOR=\n
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... csrrsi x0, mtvec, 0x3
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... csrrw x0, MSTATUS, a0
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... j .
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# Set CLIC mode in MTVEC
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# and write to MCAUSE to check if bits are mirrored in MSTATUS
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# needs to put desired value to A1 beforehand
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${PROG_MCAUSE} SEPARATOR=\n
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... csrrsi x0, mtvec, 0x3
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... csrrw x0, MCAUSE, a1
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... j .
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# Same as above, but CLINT mode, so bits should not be mirrored
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${PROG_MCAUSE_CLINT} SEPARATOR=\n
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... csrrsi x0, mtvec, 0x1
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... csrrw x0, MCAUSE, a1
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... j .
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*** Keywords ***
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Create Machine
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Execute Command mach create
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Execute Command using sysbus
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Execute Command machine LoadPlatformDescription @tests/peripherals/CLIC/CLIC-test-platform.repl
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Execute Command cpu PC ${starting_pc}
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*** Test Cases ***
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MSTATUS should mirror MCAUSE MPP and MPIE in CLIC mode
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Create Machine
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Execute Command sysbus.cpu AssembleBlock ${starting_pc} "${PROG_MSTATUS}"
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Execute Command sysbus.cpu SetRegister "A0" 0x1880
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Execute Command sysbus.cpu Step 3
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${mcause}= Execute Command sysbus.cpu MCAUSE
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Should Be Equal As Integers ${mcause} 0x38000000
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MCAUSE should mirror MSTATUS MPP and MPIE in CLIC mode
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Create Machine
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Execute Command sysbus.cpu AssembleBlock ${starting_pc} "${PROG_MCAUSE}"
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Execute Command sysbus.cpu SetRegister "A1" 0x8000000
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Execute Command sysbus.cpu Step 3
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${mstatus}= Execute Command sysbus.cpu MSTATUS
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Should Be Equal As Integers ${mstatus} 0x80
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MCAUSE should not mirror MSTATUS MPP and MPIE in CLIC mode on invalid mode write
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Create Machine
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Execute Command sysbus.cpu AssembleBlock ${starting_pc} "${PROG_MCAUSE}"
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# Unsupported value (0b10) written to MPP in MCAUSE - should keep the old value instead, as MSTATUS won't allow it
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Execute Command sysbus.cpu SetRegister "A1" 0x28000000
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Execute Command sysbus.cpu Step 3
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${mstatus}= Execute Command sysbus.cpu MSTATUS
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Should Be Equal As Integers ${mstatus} 0x1880
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MCAUSE should not mirror MSTATUS MPP and MPIE in CLINT mode
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Create Machine
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Execute Command sysbus.cpu AssembleBlock ${starting_pc} "${PROG_MCAUSE_CLINT}"
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Execute Command sysbus.cpu SetRegister "A1" 0x0
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Execute Command sysbus.cpu Step 3
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${mstatus}= Execute Command sysbus.cpu MSTATUS
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Should Be Equal As Integers ${mstatus} 0x1800
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