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Add hardware counters dump for scr1 core #3

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Add hardware counters dump for scr1 core #3

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fb1784d
add hardware counters dump
Jun 16, 2026
3a0a498
fix macro
Jun 28, 2026
f0a3074
add counters dump for scr1
defuntitled Jul 5, 2026
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2 changes: 1 addition & 1 deletion .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -3,4 +3,4 @@ build.*
*.swp
tags
.vscode
build/
build/
1 change: 1 addition & 0 deletions platform/vcu118_scr1/plf.h
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Expand Up @@ -104,6 +104,7 @@

#define PLF_MEM_TEST_ENABLED 1
#define PLF_XMODEM_ENABLED 1
#define PLF_HWCNT_DUMP 1

//----------------------
// IPIC configuration
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26 changes: 26 additions & 0 deletions src/fsbl.c
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Expand Up @@ -961,6 +961,29 @@ static void cmd_flip_dbg(void *arg)
}
}

#ifdef PLF_HWCNT_DUMP
/* race-free read of a 64-bit counter split across lo/hi CSRs (RV32) */
#define read_counter64(dst, lo, hi) do{ \
uint32_t _h, _l, _h2; \
do { _h = read_csr(hi); _l = read_csr(lo); \
_h2 = read_csr(hi); } while (_h != _h2); \
(dst) = ((uint64_t)_h << 32) | _l; }while(0)

static void cmd_dump_counters(void *arg)
{
uint64_t cyc, inst, tim;

read_counter64(cyc, mcycle, mcycleh);
read_counter64(inst, minstret, minstreth);
read_counter64(tim, time, timeh);

uart_puts("HW counters:\n");
uart_puts(" cycle: "); uart_puthex64(cyc); uart_putc('\n');
uart_puts(" instret: "); uart_puthex64(inst); uart_putc('\n');
uart_puts(" time: "); uart_puthex64(tim); uart_putc('\n');
}
#endif // PLF_HWCNT_DUMP

static void cmd_print_time(void *arg)
{
char buf[64];
Expand Down Expand Up @@ -1014,6 +1037,9 @@ static const struct scbl_cmd scbl_commands[] = {
{'t' | SCBL_CMD_ARG_ADDR, "mem test", cmd_mem_test, 0},
#endif // PLF_MEM_TEST_ENABLED
{'T' | SCBL_CMD_HIDDEN, "current time", cmd_print_time, 0},
#ifdef PLF_HWCNT_DUMP
{'c', "dump hw counters", cmd_dump_counters, 0},
#endif // PLF_HWCNT_DUMP
{'!' | SCBL_CMD_HIDDEN, 0, cmd_flip_dbg, 0},
#ifdef PLF_CACHE_CFG
{'$' | SCBL_CMD_HIDDEN, "flip L1$", cmd_flip_l1cache, 0},
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