diff --git a/lib/sbi/sbi_timer.c b/lib/sbi/sbi_timer.c index 7b618de..65e42b0 100644 --- a/lib/sbi/sbi_timer.c +++ b/lib/sbi/sbi_timer.c @@ -183,13 +183,17 @@ int sbi_timer_init(struct sbi_scratch *scratch, bool cold_boot) u64 *time_delta; const struct sbi_platform *plat = sbi_platform_ptr(scratch); + sbi_printf("sbi_timer_init: begins\n"); + if (cold_boot) { time_delta_off = sbi_scratch_alloc_offset(sizeof(*time_delta)); if (!time_delta_off) return SBI_ENOMEM; - if (sbi_hart_has_extension(scratch, SBI_HART_EXT_ZICNTR)) + if (sbi_hart_has_extension(scratch, SBI_HART_EXT_ZICNTR)) { + sbi_printf("sbi_timer_init: got Zicntr extension\n"); get_time_val = get_ticks; + } } else { if (!time_delta_off) return SBI_ENOMEM; @@ -198,7 +202,10 @@ int sbi_timer_init(struct sbi_scratch *scratch, bool cold_boot) time_delta = sbi_scratch_offset_ptr(scratch, time_delta_off); *time_delta = 0; - return sbi_platform_timer_init(plat, cold_boot); + int rc = sbi_platform_timer_init(plat, cold_boot); + if (rc) + sbi_printf("sbi_platform_timer: sbi_platform_timer_init failed (%d)\n", rc); + return rc; } void sbi_timer_exit(struct sbi_scratch *scratch) diff --git a/lib/sbi/sbi_trap.c b/lib/sbi/sbi_trap.c index b4f3a17..cde2073 100644 --- a/lib/sbi/sbi_trap.c +++ b/lib/sbi/sbi_trap.c @@ -283,6 +283,7 @@ static int sbi_trap_aia_irq(void) */ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx) { + sbi_printf("<"); int rc = SBI_ENOTSUPP; const char *msg = "trap handler failed"; struct sbi_scratch *scratch = sbi_scratch_thishart_ptr(); @@ -295,6 +296,7 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx) sbi_trap_set_context(scratch, tcntx); if (mcause & MCAUSE_IRQ_MASK) { + sbi_printf("i(%lu)", mcause & ~MCAUSE_IRQ_MASK); if (sbi_hart_has_extension(sbi_scratch_thishart_ptr(), SBI_HART_EXT_SMAIA)) rc = sbi_trap_aia_irq(); @@ -306,35 +308,42 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx) switch (mcause) { case CAUSE_ILLEGAL_INSTRUCTION: + sbi_printf("I"); rc = sbi_illegal_insn_handler(tcntx); msg = "illegal instruction handler failed"; break; case CAUSE_MISALIGNED_LOAD: + sbi_printf("L"); sbi_pmu_ctr_incr_fw(SBI_PMU_FW_MISALIGNED_LOAD); rc = sbi_misaligned_load_handler(tcntx); msg = "misaligned load handler failed"; break; case CAUSE_MISALIGNED_STORE: + sbi_printf("S"); sbi_pmu_ctr_incr_fw(SBI_PMU_FW_MISALIGNED_STORE); rc = sbi_misaligned_store_handler(tcntx); msg = "misaligned store handler failed"; break; case CAUSE_SUPERVISOR_ECALL: case CAUSE_MACHINE_ECALL: + sbi_printf("E"); rc = sbi_ecall_handler(tcntx); msg = "ecall handler failed"; break; case CAUSE_LOAD_ACCESS: + sbi_printf("l"); sbi_pmu_ctr_incr_fw(SBI_PMU_FW_ACCESS_LOAD); rc = sbi_load_access_handler(tcntx); msg = "load fault handler failed"; break; case CAUSE_STORE_ACCESS: + sbi_printf("s"); sbi_pmu_ctr_incr_fw(SBI_PMU_FW_ACCESS_STORE); rc = sbi_store_access_handler(tcntx); msg = "store fault handler failed"; break; default: + sbi_printf("R"); /* If the trap came from S or U mode, redirect it there */ msg = "trap redirect failed"; rc = sbi_trap_redirect(regs, trap); @@ -344,6 +353,8 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx) trap_done: if (rc) sbi_trap_error(msg, rc, tcntx); + else + sbi_printf(">"); if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) != PRV_M) sbi_sse_process_pending_events(regs); diff --git a/lib/utils/timer/fdt_timer.c b/lib/utils/timer/fdt_timer.c index f468730..db20526 100644 --- a/lib/utils/timer/fdt_timer.c +++ b/lib/utils/timer/fdt_timer.c @@ -7,6 +7,7 @@ * Anup Patel */ +#include #include #include #include @@ -39,19 +40,26 @@ static int fdt_timer_cold_init(void) void *fdt = fdt_get_address(); for (pos = 0; pos < fdt_timer_drivers_size; pos++) { + sbi_printf("fdt_timer_cold_init: pos = %d\n", pos); drv = fdt_timer_drivers[pos]; noff = -1; while ((noff = fdt_find_match(fdt, noff, drv->match_table, &match)) >= 0) { + + sbi_printf("fdt_timer_cold_init: got match, name = %s\n", match->compatible); if (!fdt_node_is_enabled(fdt, noff)) continue; + sbi_printf("fdt_timer_cold_init: enabled\n"); + /* drv->cold_init must not be NULL */ if (drv->cold_init == NULL) return SBI_EFAIL; rc = drv->cold_init(fdt, noff, match); + sbi_printf("fdt_timer_cold_init: drc->cold_init = %d\n", rc); + if (rc == SBI_ENODEV) continue; if (rc) @@ -69,6 +77,7 @@ static int fdt_timer_cold_init(void) * We can't fail here since systems with Sstc might not provide * mtimer/clint DT node in the device tree. */ + sbi_printf("fdt_timer_cold_init: returns 0\n"); return 0; } @@ -78,9 +87,15 @@ int fdt_timer_init(bool cold_boot) if (cold_boot) { rc = fdt_timer_cold_init(); - if (rc) + if (rc) { + sbi_printf("fdt_timer_init: fdt_timer_cold_init failed (%d)\n", rc); return rc; + } } - return fdt_timer_warm_init(); + rc = fdt_timer_warm_init(); + if (rc) + sbi_printf("fdt_timer_init: fdt_timer_warm_init failed (%d)\n", rc); + + return rc; } diff --git a/lib/utils/timer/fdt_timer_mtimer.c b/lib/utils/timer/fdt_timer_mtimer.c index 9e27e3a..cef2ee6 100644 --- a/lib/utils/timer/fdt_timer_mtimer.c +++ b/lib/utils/timer/fdt_timer_mtimer.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -33,6 +34,7 @@ static struct aclint_mtimer_data *mt_reference = NULL; static int timer_mtimer_cold_init(void *fdt, int nodeoff, const struct fdt_match *match) { + int rc; unsigned long addr[2], size[2]; struct timer_mtimer_node *mtn, *n; @@ -40,6 +42,8 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, const struct timer_mtimer_quirks *quirks = match->data; bool is_clint = quirks && quirks->is_clint; + sbi_printf("timer_mtimer_cold_init: begins, is_clint = %d\n", (int) is_clint); + mtn = sbi_zalloc(sizeof(*mtn)); if (!mtn) return SBI_ENOMEM; @@ -49,6 +53,7 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, &addr[0], &size[0], &addr[1], &size[1], &mt->first_hartid, &mt->hart_count); if (rc) { + sbi_printf("timer_mtimer_cold_init: fdt_parse_aclint_node failed (%d)\n", rc); sbi_free(mtn); return rc; } @@ -57,6 +62,7 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, rc = fdt_parse_timebase_frequency(fdt, &mt->mtime_freq); if (rc) { + sbi_printf("timer_mtimer_cold_init: fdt_parse_timebase_frequency failed (%d)\n", rc); sbi_free(mtn); return rc; } @@ -83,6 +89,11 @@ static int timer_mtimer_cold_init(void *fdt, int nodeoff, mt->mtimecmp_size = size[1]; } + sbi_printf("timer_mtimer_cold_init: mtime_addr = 0x%08lx\n", mt->mtime_addr); + sbi_printf("timer_mtimer_cold_init: mtime_size = 0x%08lx\n", mt->mtime_size); + sbi_printf("timer_mtimer_cold_init: mtimecmp_addr = 0x%08lx\n", mt->mtimecmp_addr); + sbi_printf("timer_mtimer_cold_init: mtimecmp_size = 0x%08lx\n", mt->mtimecmp_size); + /* Apply additional quirks */ if (quirks) { mt->has_64bit_mmio = quirks->has_64bit_mmio;