arm_fdt.c revision 1.5.2.2
1 1.5.2.2 skrll /* $NetBSD: arm_fdt.c,v 1.5.2.2 2017/08/28 17:51:30 skrll Exp $ */ 2 1.5.2.2 skrll 3 1.5.2.2 skrll /*- 4 1.5.2.2 skrll * Copyright (c) 2017 Jared D. McNeill <jmcneill (at) invisible.ca> 5 1.5.2.2 skrll * All rights reserved. 6 1.5.2.2 skrll * 7 1.5.2.2 skrll * Redistribution and use in source and binary forms, with or without 8 1.5.2.2 skrll * modification, are permitted provided that the following conditions 9 1.5.2.2 skrll * are met: 10 1.5.2.2 skrll * 1. Redistributions of source code must retain the above copyright 11 1.5.2.2 skrll * notice, this list of conditions and the following disclaimer. 12 1.5.2.2 skrll * 2. Redistributions in binary form must reproduce the above copyright 13 1.5.2.2 skrll * notice, this list of conditions and the following disclaimer in the 14 1.5.2.2 skrll * documentation and/or other materials provided with the distribution. 15 1.5.2.2 skrll * 16 1.5.2.2 skrll * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.5.2.2 skrll * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 1.5.2.2 skrll * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 1.5.2.2 skrll * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 1.5.2.2 skrll * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 1.5.2.2 skrll * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 1.5.2.2 skrll * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 1.5.2.2 skrll * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 1.5.2.2 skrll * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 1.5.2.2 skrll * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 1.5.2.2 skrll * SUCH DAMAGE. 27 1.5.2.2 skrll */ 28 1.5.2.2 skrll 29 1.5.2.2 skrll #include "opt_arm_timer.h" 30 1.5.2.2 skrll 31 1.5.2.2 skrll #include <sys/cdefs.h> 32 1.5.2.2 skrll __KERNEL_RCSID(0, "$NetBSD: arm_fdt.c,v 1.5.2.2 2017/08/28 17:51:30 skrll Exp $"); 33 1.5.2.2 skrll 34 1.5.2.2 skrll #include <sys/param.h> 35 1.5.2.2 skrll #include <sys/systm.h> 36 1.5.2.2 skrll #include <sys/device.h> 37 1.5.2.2 skrll #include <sys/kmem.h> 38 1.5.2.2 skrll #include <sys/bus.h> 39 1.5.2.2 skrll 40 1.5.2.2 skrll #include <machine/cpu.h> 41 1.5.2.2 skrll 42 1.5.2.2 skrll #include <dev/fdt/fdtvar.h> 43 1.5.2.2 skrll #include <dev/ofw/openfirm.h> 44 1.5.2.2 skrll 45 1.5.2.2 skrll #include <arm/fdt/arm_fdtvar.h> 46 1.5.2.2 skrll 47 1.5.2.2 skrll static int arm_fdt_match(device_t, cfdata_t, void *); 48 1.5.2.2 skrll static void arm_fdt_attach(device_t, device_t, void *); 49 1.5.2.2 skrll 50 1.5.2.2 skrll CFATTACH_DECL_NEW(arm_fdt, 0, 51 1.5.2.2 skrll arm_fdt_match, arm_fdt_attach, NULL, NULL); 52 1.5.2.2 skrll 53 1.5.2.2 skrll static struct arm_platlist arm_platform_list = 54 1.5.2.2 skrll TAILQ_HEAD_INITIALIZER(arm_platform_list); 55 1.5.2.2 skrll 56 1.5.2.2 skrll struct arm_fdt_cpu_hatch_cb { 57 1.5.2.2 skrll TAILQ_ENTRY(arm_fdt_cpu_hatch_cb) next; 58 1.5.2.2 skrll void (*cb)(void *, struct cpu_info *); 59 1.5.2.2 skrll void *priv; 60 1.5.2.2 skrll }; 61 1.5.2.2 skrll 62 1.5.2.2 skrll static TAILQ_HEAD(, arm_fdt_cpu_hatch_cb) arm_fdt_cpu_hatch_cbs = 63 1.5.2.2 skrll TAILQ_HEAD_INITIALIZER(arm_fdt_cpu_hatch_cbs); 64 1.5.2.2 skrll 65 1.5.2.2 skrll static void (*_arm_fdt_irq_handler)(void *) = NULL; 66 1.5.2.2 skrll static void (*_arm_fdt_timer_init)(void) = NULL; 67 1.5.2.2 skrll 68 1.5.2.2 skrll int 69 1.5.2.2 skrll arm_fdt_match(device_t parent, cfdata_t cf, void *aux) 70 1.5.2.2 skrll { 71 1.5.2.2 skrll return 1; 72 1.5.2.2 skrll } 73 1.5.2.2 skrll 74 1.5.2.2 skrll void 75 1.5.2.2 skrll arm_fdt_attach(device_t parent, device_t self, void *aux) 76 1.5.2.2 skrll { 77 1.5.2.2 skrll const struct arm_platform *plat = arm_fdt_platform(); 78 1.5.2.2 skrll struct fdt_attach_args faa; 79 1.5.2.2 skrll 80 1.5.2.2 skrll aprint_naive("\n"); 81 1.5.2.2 skrll aprint_normal("\n"); 82 1.5.2.2 skrll 83 1.5.2.2 skrll plat->init_attach_args(&faa); 84 1.5.2.2 skrll faa.faa_name = ""; 85 1.5.2.2 skrll faa.faa_phandle = OF_peer(0); 86 1.5.2.2 skrll 87 1.5.2.2 skrll config_found(self, &faa, NULL); 88 1.5.2.2 skrll } 89 1.5.2.2 skrll 90 1.5.2.2 skrll const struct arm_platform * 91 1.5.2.2 skrll arm_fdt_platform(void) 92 1.5.2.2 skrll { 93 1.5.2.2 skrll static const struct arm_platform_info *booted_platform = NULL; 94 1.5.2.2 skrll 95 1.5.2.2 skrll if (booted_platform == NULL) { 96 1.5.2.2 skrll __link_set_decl(arm_platforms, struct arm_platform_info); 97 1.5.2.2 skrll struct arm_platform_info * const *info; 98 1.5.2.2 skrll const struct arm_platform_info *best_info = NULL; 99 1.5.2.2 skrll const int phandle = OF_peer(0); 100 1.5.2.2 skrll int match, best_match = 0; 101 1.5.2.2 skrll 102 1.5.2.2 skrll __link_set_foreach(info, arm_platforms) { 103 1.5.2.2 skrll const char * const compat[] = { (*info)->compat, NULL }; 104 1.5.2.2 skrll match = of_match_compatible(phandle, compat); 105 1.5.2.2 skrll if (match > best_match) { 106 1.5.2.2 skrll best_match = match; 107 1.5.2.2 skrll best_info = *info; 108 1.5.2.2 skrll } 109 1.5.2.2 skrll } 110 1.5.2.2 skrll 111 1.5.2.2 skrll booted_platform = best_info; 112 1.5.2.2 skrll } 113 1.5.2.2 skrll 114 1.5.2.2 skrll return booted_platform == NULL ? NULL : booted_platform->ops; 115 1.5.2.2 skrll } 116 1.5.2.2 skrll 117 1.5.2.2 skrll void 118 1.5.2.2 skrll arm_fdt_cpu_hatch_register(void *priv, void (*cb)(void *, struct cpu_info *)) 119 1.5.2.2 skrll { 120 1.5.2.2 skrll struct arm_fdt_cpu_hatch_cb *c; 121 1.5.2.2 skrll 122 1.5.2.2 skrll c = kmem_alloc(sizeof(*c), KM_SLEEP); 123 1.5.2.2 skrll c->priv = priv; 124 1.5.2.2 skrll c->cb = cb; 125 1.5.2.2 skrll TAILQ_INSERT_TAIL(&arm_fdt_cpu_hatch_cbs, c, next); 126 1.5.2.2 skrll } 127 1.5.2.2 skrll 128 1.5.2.2 skrll void 129 1.5.2.2 skrll arm_fdt_cpu_hatch(struct cpu_info *ci) 130 1.5.2.2 skrll { 131 1.5.2.2 skrll struct arm_fdt_cpu_hatch_cb *c; 132 1.5.2.2 skrll 133 1.5.2.2 skrll TAILQ_FOREACH(c, &arm_fdt_cpu_hatch_cbs, next) 134 1.5.2.2 skrll c->cb(c->priv, ci); 135 1.5.2.2 skrll } 136 1.5.2.2 skrll 137 1.5.2.2 skrll void 138 1.5.2.2 skrll arm_fdt_irq_set_handler(void (*irq_handler)(void *)) 139 1.5.2.2 skrll { 140 1.5.2.2 skrll KASSERT(_arm_fdt_irq_handler == NULL); 141 1.5.2.2 skrll _arm_fdt_irq_handler = irq_handler; 142 1.5.2.2 skrll } 143 1.5.2.2 skrll 144 1.5.2.2 skrll void 145 1.5.2.2 skrll arm_fdt_irq_handler(void *tf) 146 1.5.2.2 skrll { 147 1.5.2.2 skrll _arm_fdt_irq_handler(tf); 148 1.5.2.2 skrll } 149 1.5.2.2 skrll 150 1.5.2.2 skrll void 151 1.5.2.2 skrll arm_fdt_timer_register(void (*timerfn)(void)) 152 1.5.2.2 skrll { 153 1.5.2.2 skrll if (_arm_fdt_timer_init != NULL) { 154 1.5.2.2 skrll #ifdef DIAGNOSTIC 155 1.5.2.2 skrll aprint_verbose("%s: timer already registered\n", __func__); 156 1.5.2.2 skrll #endif 157 1.5.2.2 skrll return; 158 1.5.2.2 skrll } 159 1.5.2.2 skrll _arm_fdt_timer_init = timerfn; 160 1.5.2.2 skrll } 161 1.5.2.2 skrll 162 1.5.2.2 skrll void 163 1.5.2.2 skrll arm_fdt_memory_dump(paddr_t pa) 164 1.5.2.2 skrll { 165 1.5.2.2 skrll const struct arm_platform *plat = arm_fdt_platform(); 166 1.5.2.2 skrll struct fdt_attach_args faa; 167 1.5.2.2 skrll bus_space_tag_t bst; 168 1.5.2.2 skrll bus_space_handle_t bsh; 169 1.5.2.2 skrll 170 1.5.2.2 skrll plat->init_attach_args(&faa); 171 1.5.2.2 skrll 172 1.5.2.2 skrll bst = faa.faa_bst; 173 1.5.2.2 skrll bus_space_map(bst, pa, 0x100, 0, &bsh); 174 1.5.2.2 skrll 175 1.5.2.2 skrll for (int i = 0; i < 0x100; i += 0x10) { 176 1.5.2.2 skrll printf("%" PRIxPTR ": %08x %08x %08x %08x\n", 177 1.5.2.2 skrll (uintptr_t)(pa + i), 178 1.5.2.2 skrll bus_space_read_4(bst, bsh, i + 0), 179 1.5.2.2 skrll bus_space_read_4(bst, bsh, i + 4), 180 1.5.2.2 skrll bus_space_read_4(bst, bsh, i + 8), 181 1.5.2.2 skrll bus_space_read_4(bst, bsh, i + 12)); 182 1.5.2.2 skrll } 183 1.5.2.2 skrll } 184 1.5.2.2 skrll 185 1.5.2.2 skrll #ifdef __HAVE_GENERIC_CPU_INITCLOCKS 186 1.5.2.2 skrll void 187 1.5.2.2 skrll cpu_initclocks(void) 188 1.5.2.2 skrll { 189 1.5.2.2 skrll if (_arm_fdt_timer_init == NULL) 190 1.5.2.2 skrll panic("cpu_initclocks: no timer registered"); 191 1.5.2.2 skrll _arm_fdt_timer_init(); 192 1.5.2.2 skrll } 193 1.5.2.2 skrll #endif 194
Indexes created Thu Oct 23 22:10:10 GMT 2025