/* $NetBSD: acpi_platform.c,v 1.15.2.2 2019/09/23 07:06:31 martin Exp $ */ /*- * Copyright (c) 2018 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Jared McNeill . * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "com.h" #include "plcom.h" #include "wsdisplay.h" #include "genfb.h" #include "opt_efi.h" #include "opt_multiprocessor.h" #include __KERNEL_RCSID(0, "$NetBSD: acpi_platform.c,v 1.15.2.2 2019/09/23 07:06:31 martin Exp $"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NCOM > 0 #include #include #include #endif #if NWSDISPLAY > 0 && NGENFB > 0 #include #endif #ifdef EFI_RUNTIME #include #endif #include #include #include #include #define SPCR_BAUD_UNKNOWN 0 #define SPCR_BAUD_9600 3 #define SPCR_BAUD_19200 4 #define SPCR_BAUD_57600 6 #define SPCR_BAUD_115200 7 extern struct bus_space arm_generic_bs_tag; extern struct bus_space arm_generic_a4x_bs_tag; #if NPLCOM > 0 static struct plcom_instance plcom_console; #endif struct arm32_bus_dma_tag acpi_coherent_dma_tag; static struct arm32_dma_range acpi_coherent_ranges[] = { [0] = { .dr_sysbase = 0, .dr_busbase = 0, .dr_len = UINTPTR_MAX, .dr_flags = _BUS_DMAMAP_COHERENT, } }; static const struct pmap_devmap * acpi_platform_devmap(void) { static const struct pmap_devmap devmap[] = { DEVMAP_ENTRY_END }; return devmap; } static void acpi_platform_bootstrap(void) { extern struct arm32_bus_dma_tag arm_generic_dma_tag; acpi_coherent_dma_tag = arm_generic_dma_tag; acpi_coherent_dma_tag._ranges = acpi_coherent_ranges; acpi_coherent_dma_tag._nranges = __arraycount(acpi_coherent_ranges); } static void acpi_platform_startup(void) { ACPI_TABLE_SPCR *spcr; ACPI_TABLE_FADT *fadt; #ifdef MULTIPROCESSOR ACPI_TABLE_MADT *madt; #endif int baud_rate; /* * Setup serial console device */ if (ACPI_SUCCESS(acpi_table_find(ACPI_SIG_SPCR, (void **)&spcr))) { switch (spcr->BaudRate) { case SPCR_BAUD_9600: baud_rate = 9600; break; case SPCR_BAUD_19200: baud_rate = 19200; break; case SPCR_BAUD_57600: baud_rate = 57600; break; case SPCR_BAUD_115200: case SPCR_BAUD_UNKNOWN: default: baud_rate = 115200; break; } if (spcr->SerialPort.SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY && spcr->SerialPort.Address != 0) { switch (spcr->InterfaceType) { #if NPLCOM > 0 case ACPI_DBG2_ARM_PL011: case ACPI_DBG2_ARM_SBSA_32BIT: case ACPI_DBG2_ARM_SBSA_GENERIC: plcom_console.pi_type = PLCOM_TYPE_PL011; plcom_console.pi_iot = &arm_generic_bs_tag; plcom_console.pi_iobase = spcr->SerialPort.Address; plcom_console.pi_size = PL011COM_UART_SIZE; plcom_console.pi_flags = PLC_FLAG_32BIT_ACCESS; plcomcnattach(&plcom_console, baud_rate, 0, TTYDEF_CFLAG, -1); break; #endif #if NCOM > 0 case ACPI_DBG2_16550_COMPATIBLE: case ACPI_DBG2_16550_SUBSET: if (ACPI_ACCESS_BIT_WIDTH(spcr->SerialPort.AccessWidth) == 8) { comcnattach(&arm_generic_bs_tag, spcr->SerialPort.Address, baud_rate, -1, COM_TYPE_NORMAL, TTYDEF_CFLAG); } else { comcnattach(&arm_generic_a4x_bs_tag, spcr->SerialPort.Address, baud_rate, -1, COM_TYPE_NORMAL, TTYDEF_CFLAG); } break; case ACPI_DBG2_BCM2835: comcnattach(&arm_generic_a4x_bs_tag, spcr->SerialPort.Address + 0x40, baud_rate, -1, COM_TYPE_BCMAUXUART, TTYDEF_CFLAG); cn_set_magic("+++++"); break; #endif default: printf("SPCR: kernel does not support interface type %#x\n", spcr->InterfaceType); break; } } acpi_table_unmap((ACPI_TABLE_HEADER *)spcr); } /* * Initialize PSCI 0.2+ if implemented */ if (ACPI_SUCCESS(acpi_table_find(ACPI_SIG_FADT, (void **)&fadt))) { if (fadt->ArmBootFlags & ACPI_FADT_PSCI_COMPLIANT) { if (fadt->ArmBootFlags & ACPI_FADT_PSCI_USE_HVC) { psci_init(psci_call_hvc); } else { psci_init(psci_call_smc); } } acpi_table_unmap((ACPI_TABLE_HEADER *)fadt); } #ifdef MULTIPROCESSOR /* * Count CPUs */ if (ACPI_SUCCESS(acpi_table_find(ACPI_SIG_MADT, (void **)&madt))) { char *end = (char *)madt + madt->Header.Length; char *where = (char *)madt + sizeof(ACPI_TABLE_MADT); while (where < end) { ACPI_SUBTABLE_HEADER *subtable = (ACPI_SUBTABLE_HEADER *)where; if (subtable->Type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) arm_cpu_max++; where += subtable->Length; } acpi_table_unmap((ACPI_TABLE_HEADER *)madt); } #endif /* MULTIPROCESSOR */ } static void acpi_platform_init_attach_args(struct fdt_attach_args *faa) { extern struct bus_space arm_generic_bs_tag; extern struct bus_space arm_generic_a4x_bs_tag; faa->faa_bst = &arm_generic_bs_tag; faa->faa_a4x_bst = &arm_generic_a4x_bs_tag; faa->faa_dmat = &acpi_coherent_dma_tag; } static void acpi_platform_device_register(device_t self, void *aux) { #if NWSDISPLAY > 0 && NGENFB > 0 if (device_is_a(self, "armfdt")) { /* * Setup framebuffer console, if present. */ acpi_simplefb_preattach(); } #endif #if NCOM > 0 prop_dictionary_t prop = device_properties(self); if (device_is_a(self, "com")) { ACPI_TABLE_SPCR *spcr; if (ACPI_FAILURE(acpi_table_find(ACPI_SIG_SPCR, (void **)&spcr))) return; if (spcr->SerialPort.SpaceId != ACPI_ADR_SPACE_SYSTEM_MEMORY) goto spcr_unmap; if (spcr->SerialPort.Address == 0) goto spcr_unmap; if (spcr->InterfaceType != ACPI_DBG2_16550_COMPATIBLE && spcr->InterfaceType != ACPI_DBG2_16550_SUBSET) goto spcr_unmap; if (device_is_a(device_parent(self), "puc")) { const struct puc_attach_args * const paa = aux; int b, d, f; const int s = pci_get_segment(paa->pc); pci_decompose_tag(paa->pc, paa->tag, &b, &d, &f); if (spcr->PciSegment == s && spcr->PciBus == b && spcr->PciDevice == d && spcr->PciFunction == f) prop_dictionary_set_bool(prop, "force_console", true); } if (device_is_a(device_parent(self), "acpi")) { struct acpi_attach_args * const aa = aux; struct acpi_resources res; struct acpi_mem *mem; if (ACPI_FAILURE(acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS", &res, &acpi_resource_parse_ops_quiet))) goto spcr_unmap; mem = acpi_res_mem(&res, 0); if (mem == NULL) goto crs_cleanup; if (mem->ar_base == spcr->SerialPort.Address) prop_dictionary_set_bool(prop, "force_console", true); crs_cleanup: acpi_resource_cleanup(&res); } spcr_unmap: acpi_table_unmap((ACPI_TABLE_HEADER *)spcr); } #endif } static void acpi_platform_reset(void) { #ifdef EFI_RUNTIME if (arm_efirt_reset(EFI_RESET_COLD) == 0) return; #endif if (psci_available()) psci_system_reset(); } static u_int acpi_platform_uart_freq(void) { return 0; } static const struct arm_platform acpi_platform = { .ap_devmap = acpi_platform_devmap, .ap_bootstrap = acpi_platform_bootstrap, .ap_startup = acpi_platform_startup, .ap_init_attach_args = acpi_platform_init_attach_args, .ap_device_register = acpi_platform_device_register, .ap_reset = acpi_platform_reset, .ap_delay = gtmr_delay, .ap_uart_freq = acpi_platform_uart_freq, }; ARM_PLATFORM(virt, "netbsd,generic-acpi", &acpi_platform);