static void htif_handle_entry(struct htif_softc *sc) { uint64_t entry; uint8_t devcmd; uint8_t devid; entry = machine_command(ECALL_HTIF_GET_ENTRY, 0); while (entry) { devid = HTIF_DEV_ID(entry); devcmd = HTIF_DEV_CMD(entry); if (devcmd == HTIF_CMD_IDENTIFY) { /* Enumeration interrupt */ if (devid == sc->identify_id) sc->identify_done = 1; } else { /* Device interrupt */ if (intrs[devid].func != NULL) intrs[devid].func(intrs[devid].arg, entry); } entry = machine_command(ECALL_HTIF_GET_ENTRY, 0); } }
void identify_cpu(void) { const struct cpu_parts *cpu_partsp; uint32_t part_id; uint32_t impl_id; uint64_t mimpid; uint64_t misa; u_int cpu; size_t i; cpu_partsp = NULL; mimpid = machine_command(ECALL_MIMPID_GET, 0); misa = machine_command(ECALL_MCPUID_GET, 0); cpu = PCPU_GET(cpuid); impl_id = CPU_IMPL(mimpid); for (i = 0; i < nitems(cpu_implementers); i++) { if (impl_id == cpu_implementers[i].impl_id || cpu_implementers[i].impl_id == 0) { cpu_desc[cpu].cpu_impl = impl_id; cpu_desc[cpu].cpu_impl_name = cpu_implementers[i].impl_name; cpu_partsp = cpu_parts_std; break; } } part_id = CPU_PART(misa); for (i = 0; &cpu_partsp[i] != NULL; i++) { if (part_id == cpu_partsp[i].part_id || cpu_partsp[i].part_id == -1) { cpu_desc[cpu].cpu_part_num = part_id; cpu_desc[cpu].cpu_part_name = cpu_partsp[i].part_name; break; } } /* Print details for boot CPU or if we want verbose output */ if (cpu == 0 || bootverbose) { printf("CPU(%d): %s %s\n", cpu, cpu_desc[cpu].cpu_impl_name, cpu_desc[cpu].cpu_part_name); } }
uint64_t htif_command(uint64_t arg) { return (machine_command(ECALL_HTIF_CMD, arg)); }