mirror of
https://github.com/openhwgroup/cvw.git
synced 2025-06-28 01:32:49 -04:00
commit
3e45ef4dff
6 changed files with 30 additions and 36 deletions
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@ -49,7 +49,7 @@ setenv SPIKE_PATH $RISCV/bin # Change this for your path to riscv-isa-s
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setenv IDV $RISCV/ImperasDV-OpenHW
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setenv IDV $RISCV/ImperasDV-OpenHW
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if ($?IDV) then
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if ($?IDV) then
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# echo "Imperas exists"
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# echo "Imperas exists"
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setenv IMPERAS_HOME $IDV/Imperas
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setenv IMPERAS_HOME $IDV
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setenv IMPERAS_PERSONALITY CPUMAN_DV_ASYNC
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setenv IMPERAS_PERSONALITY CPUMAN_DV_ASYNC
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setenv ROOTDIR ~/
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setenv ROOTDIR ~/
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source ${IMPERAS_HOME}/bin/setup.sh
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source ${IMPERAS_HOME}/bin/setup.sh
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@ -66,7 +66,7 @@ export SPIKE_PATH=$RISCV/bin # Copy this as it is
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export IDV=$RISCV/ImperasDV-OpenHW
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export IDV=$RISCV/ImperasDV-OpenHW
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if [ -e "$IDV" ]; then
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if [ -e "$IDV" ]; then
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# echo "Imperas exists"
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# echo "Imperas exists"
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export IMPERAS_HOME=$IDV/Imperas
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export IMPERAS_HOME=$IDV
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export IMPERAS_PERSONALITY=CPUMAN_DV_ASYNC
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export IMPERAS_PERSONALITY=CPUMAN_DV_ASYNC
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export ROOTDIR=~/
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export ROOTDIR=~/
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source "${IMPERAS_HOME}"/bin/setup.sh
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source "${IMPERAS_HOME}"/bin/setup.sh
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@ -133,8 +133,8 @@ cause_m_time_interrupt:
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add t3, t2, t3 // add desired offset to the current time
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add t3, t2, t3 // add desired offset to the current time
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bgtu t3, t2, nowrap_m // check new time exceeds current time (no wraparound)
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bgtu t3, t2, nowrap_m // check new time exceeds current time (no wraparound)
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addi t6, t6, 1 // if wrap, increment most significant word
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addi t6, t6, 1 // if wrap, increment most significant word
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sw t6,4(t4) // store into most significant word of MTIMECMP
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nowrap_m:
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nowrap_m:
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sw t6,4(t4) // store into most significant word of MTIMECMP
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sw t3, 0(t4) // store into least significant word of MTIMECMP
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sw t3, 0(t4) // store into least significant word of MTIMECMP
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time_loop_m:
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time_loop_m:
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addi a3, a3, -1
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addi a3, a3, -1
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@ -36,20 +36,20 @@ WRITE_READ_CSR mie, 0xFFF // Enable interrupts from all sources
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// Code copied from test library to cause m time interrupt, with time loop replaced with wfi.
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// Code copied from test library to cause m time interrupt, with time loop replaced with wfi.
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/* Note: the following line might cause problems in the future. If more than 0x50 cycles are needed before the wfi
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/* Note: the following line might cause problems in the future. If more than 0x100 cycles are needed before the wfi
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instruction begins, then the program might fall into a loop and run forever*/
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instruction begins, then the program might fall into a loop and run forever*/
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li x28, 0x50 // Desired offset from the present time
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li x28, 0x100 // Desired offset from the present time
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mv a3, x28 // copy value in to know to stop waiting for interrupt after this many cycles
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mv a3, x28 // copy value in to know to stop waiting for interrupt after this many cycles
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la x29, 0x02004000 // MTIMECMP register in CLINT
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la x29, 0x02004000 // MTIMECMP register in CLINT
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la x30, 0x0200BFF8 // MTIME register in CLINT
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la x30, 0x0200BFF8 // MTIME register in CLINT
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lw x7, 0(x30) // low word of MTIME
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lw x7, 0(x30) // low word of MTIME
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lw x31, 4(x30) // high word of MTIME
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lw x31, 4(x30) // high word of MTIME
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add x28, x7, x28 // add desired offset to the current time
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add x28, x7, x28 // add desired offset to the current time
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bgtu x28, x7, nowrap // check new time exceeds current time (no wraparound)
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bgtu x28, x7, nowrap // check new time exceeds current time (no wraparound)
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addi x31, x31, 1 // if wrap, increment most significant word
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addi x31, x31, 1 // if wrap, increment most significant word
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sw x31,4(x29) // store into most significant word of MTIMECMP
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nowrap:
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nowrap:
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sw x31,4(x29) // store into most significant word of MTIMECMP
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sw x28, 0(x29) // store into least significant word of MTIMECMP
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sw x28, 0(x29) // store into least significant word of MTIMECMP
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auipc ra, 0x0
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auipc ra, 0x0
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@ -136,8 +136,8 @@ cause_m_time_interrupt:
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add t3, t2, t3 // add desired offset to the current time
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add t3, t2, t3 // add desired offset to the current time
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bgtu t3, t2, nowrap_m // check new time exceeds current time (no wraparound)
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bgtu t3, t2, nowrap_m // check new time exceeds current time (no wraparound)
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addi t6, t6, 1 // if wrap, increment most significant word
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addi t6, t6, 1 // if wrap, increment most significant word
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sw t6,4(t4) // store into most significant word of MTIMECMP
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nowrap_m:
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nowrap_m:
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sw t6,4(t4) // store into most significant word of MTIMECMP
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sw t3, 0(t4) // store into least significant word of MTIMECMP
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sw t3, 0(t4) // store into least significant word of MTIMECMP
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time_loop_m:
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time_loop_m:
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addi a3, a3, -1
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addi a3, a3, -1
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@ -35,30 +35,24 @@ WRITE_READ_CSR mie, 0xFFF // Enable interrupts from all sources
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// Code copied from test library to cause m time interrupt, with time loop replaced with wfi.
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// Code copied from test library to cause m time interrupt, with time loop replaced with wfi.
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li x28, 0x60 // Desired offset from the present time
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li x28, 0x60 // Desired offset from the present time
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mv a3, x28 // copy value in to know to stop waiting for interrupt after this many cycles
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mv a3, x28 // copy value in to know to stop waiting for interrupt after this many cycles
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la x29, 0x02004000 // MTIMECMP register in CLINT
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la x29, 0x02004000 // MTIMECMP register in CLINT
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la x30, 0x0200BFF8 // MTIME register in CLINT
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la x30, 0x0200BFF8 // MTIME register in CLINT
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lw x7, 0(x30) // low word of MTIME
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ld x7, 0(x30) // read MTIME
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lw x31, 4(x30) // high word of MTIME
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add x28, x7, x28 // add offset
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add x28, x7, x28 // add desired offset to the current time
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sw x28, 0(x29) // MTIMECMP = MTIME + offset
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bgtu x28, x7, nowrap // check new time exceeds current time (no wraparound)
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addi x31, x31, 1 // if wrap, increment most significant word
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sw x31,4(x29) // store into most significant word of MTIMECMP
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nowrap:
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auipc ra, 0x0
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sw x28, 0(x29) // store into least significant word of MTIMECMP
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addi ra, ra, 0xC // load address after wfi into ra so we return to the right place after handling the time interrupt
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auipc ra, 0x0
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wfi // test wfi until trap goes off
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addi ra, ra, 0xC // load address after wfi into ra so we return to the right place after handling the time interrupt
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wfi // test wfi until trap goes off
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li x28, 0x600d111 // magic number "good 111" to write to output after interrupt goes off.
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// this tests whether wfi is a nop or not since we should get the output for the interrupt before this one
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li x28, 0x600d111 // magic number "good 111" to write to output after interrupt goes off.
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sd x28, 0(x6)
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// this tests whether wfi is a nop or not since we should get the output for the interrupt before this one
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addi x6, x6, 8
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sd x28, 0(x6)
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addi x16, x16, 8
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addi x6, x6, 8
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addi x16, x16, 8
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END_TESTS
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END_TESTS
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