acpi_platform.c revision 1.1
1 /* $NetBSD: acpi_platform.c,v 1.1 2018/10/12 22:20:04 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2018 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jared McNeill <jmcneill (at) invisible.ca>. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 __KERNEL_RCSID(0, "$NetBSD: acpi_platform.c,v 1.1 2018/10/12 22:20:04 jmcneill Exp $"); 34 35 #include <sys/param.h> 36 #include <sys/bus.h> 37 #include <sys/cpu.h> 38 #include <sys/device.h> 39 #include <sys/termios.h> 40 41 #include <dev/fdt/fdtvar.h> 42 #include <arm/fdt/arm_fdtvar.h> 43 44 #include <uvm/uvm_extern.h> 45 46 #include <machine/bootconfig.h> 47 #include <arm/cpufunc.h> 48 #include <arm/locore.h> 49 50 #include <arm/cortex/gtmr_var.h> 51 52 #include <arm/arm/psci.h> 53 #include <arm/fdt/psci_fdtvar.h> 54 55 #include <evbarm/fdt/platform.h> 56 57 #include <evbarm/dev/plcomreg.h> 58 #include <evbarm/dev/plcomvar.h> 59 #include <dev/ic/ns16550reg.h> 60 #include <dev/ic/comreg.h> 61 62 #include <dev/acpi/acpireg.h> 63 #include <dev/acpi/acpivar.h> 64 #include <arch/arm/acpi/acpi_table.h> 65 66 #define SPCR_INTERFACE_TYPE_PL011 0x0003 67 68 extern struct bus_space arm_generic_bs_tag; 69 70 static struct plcom_instance plcom_console; 71 72 static const struct pmap_devmap * 73 acpi_platform_devmap(void) 74 { 75 static const struct pmap_devmap devmap[] = { 76 DEVMAP_ENTRY_END 77 }; 78 79 return devmap; 80 } 81 82 static void 83 acpi_platform_bootstrap(void) 84 { 85 } 86 87 static void 88 acpi_platform_startup(void) 89 { 90 ACPI_TABLE_SPCR *spcr; 91 ACPI_TABLE_FADT *fadt; 92 ACPI_TABLE_MADT *madt; 93 94 /* 95 * Setup serial console device 96 */ 97 if (ACPI_SUCCESS(acpi_table_find(ACPI_SIG_SPCR, (void **)&spcr))) { 98 if (spcr->InterfaceType == SPCR_INTERFACE_TYPE_PL011 && 99 spcr->SerialPort.SpaceId == ACPI_ADR_SPACE_SYSTEM_MEMORY && 100 spcr->SerialPort.Address != 0) { 101 102 plcom_console.pi_type = PLCOM_TYPE_PL011; 103 plcom_console.pi_flags = PLC_FLAG_32BIT_ACCESS; 104 plcom_console.pi_iot = &arm_generic_bs_tag; 105 plcom_console.pi_iobase = spcr->SerialPort.Address; 106 plcom_console.pi_size = PL011COM_UART_SIZE; 107 108 plcomcnattach(&plcom_console, 115200 /* XXX */, 0, TTYDEF_CFLAG, -1); 109 } 110 acpi_table_unmap((ACPI_TABLE_HEADER *)spcr); 111 } 112 113 /* 114 * Initialize PSCI 0.2+ if implemented 115 */ 116 if (ACPI_SUCCESS(acpi_table_find(ACPI_SIG_FADT, (void **)&fadt))) { 117 if (fadt->ArmBootFlags & ACPI_FADT_PSCI_COMPLIANT) { 118 if (fadt->ArmBootFlags & ACPI_FADT_PSCI_USE_HVC) { 119 psci_init(psci_call_hvc); 120 } else { 121 psci_init(psci_call_smc); 122 } 123 } 124 acpi_table_unmap((ACPI_TABLE_HEADER *)fadt); 125 } 126 127 /* 128 * Count CPUs 129 */ 130 if (ACPI_SUCCESS(acpi_table_find(ACPI_SIG_MADT, (void **)&madt))) { 131 char *end = (char *)madt + madt->Header.Length; 132 char *where = (char *)madt + sizeof(ACPI_TABLE_MADT); 133 while (where < end) { 134 ACPI_SUBTABLE_HEADER *subtable = (ACPI_SUBTABLE_HEADER *)where; 135 if (subtable->Type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) 136 arm_cpu_max++; 137 where += subtable->Length; 138 } 139 acpi_table_unmap((ACPI_TABLE_HEADER *)madt); 140 } 141 } 142 143 static void 144 acpi_platform_init_attach_args(struct fdt_attach_args *faa) 145 { 146 extern struct arm32_bus_dma_tag arm_generic_dma_tag; 147 extern struct bus_space arm_generic_bs_tag; 148 extern struct bus_space arm_generic_a4x_bs_tag; 149 150 faa->faa_bst = &arm_generic_bs_tag; 151 faa->faa_a4x_bst = &arm_generic_a4x_bs_tag; 152 faa->faa_dmat = &arm_generic_dma_tag; 153 } 154 155 static void 156 acpi_platform_early_putchar(char c) 157 { 158 } 159 160 static void 161 acpi_platform_device_register(device_t self, void *aux) 162 { 163 } 164 165 static u_int 166 acpi_platform_uart_freq(void) 167 { 168 return 0; 169 } 170 171 static const struct arm_platform acpi_platform = { 172 .ap_devmap = acpi_platform_devmap, 173 .ap_bootstrap = acpi_platform_bootstrap, 174 .ap_startup = acpi_platform_startup, 175 .ap_init_attach_args = acpi_platform_init_attach_args, 176 .ap_early_putchar = acpi_platform_early_putchar, 177 .ap_device_register = acpi_platform_device_register, 178 .ap_reset = psci_fdt_reset, 179 .ap_delay = gtmr_delay, 180 .ap_uart_freq = acpi_platform_uart_freq, 181 }; 182 183 ARM_PLATFORM(virt, "netbsd,generic-acpi", &acpi_platform); 184
Indexes created Tue Sep 23 14:10:03 GMT 2025