sunxi_platform.c revision 1.16
1 /* $NetBSD: sunxi_platform.c,v 1.16 2017/11/06 21:03:58 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2017 Jared McNeill <jmcneill (at) invisible.ca> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include "opt_soc.h" 30 #include "opt_multiprocessor.h" 31 #include "opt_fdt_arm.h" 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: sunxi_platform.c,v 1.16 2017/11/06 21:03:58 jmcneill Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/bus.h> 38 #include <sys/cpu.h> 39 #include <sys/device.h> 40 #include <sys/termios.h> 41 42 #include <dev/fdt/fdtvar.h> 43 #include <arm/fdt/arm_fdtvar.h> 44 45 #include <uvm/uvm_extern.h> 46 47 #include <machine/bootconfig.h> 48 #include <arm/cpufunc.h> 49 50 #include <arm/cortex/gtmr_var.h> 51 #include <arm/cortex/gic_reg.h> 52 53 #include <dev/ic/ns16550reg.h> 54 #include <dev/ic/comreg.h> 55 56 #include <arm/arm/psci.h> 57 #include <arm/fdt/psci_fdt.h> 58 59 #include <arm/sunxi/sunxi_platform.h> 60 61 #include <libfdt.h> 62 63 #define SUNXI_REF_FREQ 24000000 64 65 #define SUN4I_TIMER_BASE 0x01c20c00 66 #define SUN4I_TIMER_SIZE 0x90 67 #define SUN4I_TIMER_1_CTRL 0x20 68 #define SUN4I_TIMER_1_CTRL_CLK_SRC __BITS(3,2) 69 #define SUN4I_TIMER_1_CTRL_CLK_SRC_OSC24M 1 70 #define SUN4I_TIMER_1_CTRL_RELOAD __BIT(1) 71 #define SUN4I_TIMER_1_CTRL_EN __BIT(0) 72 #define SUN4I_TIMER_1_INTV_VALUE 0x24 73 #define SUN4I_TIMER_1_VAL 0x28 74 75 #define SUN4I_WDT_BASE 0x01c20c90 76 #define SUN4I_WDT_SIZE 0x10 77 #define SUN4I_WDT_CTRL 0x00 78 #define SUN4I_WDT_CTRL_KEY (0x333 << 1) 79 #define SUN4I_WDT_CTRL_RESTART __BIT(0) 80 #define SUN4I_WDT_MODE 0x04 81 #define SUN4I_WDT_MODE_RST_EN __BIT(1) 82 #define SUN4I_WDT_MODE_EN __BIT(0) 83 84 #define SUN6I_WDT_BASE 0x01c20ca0 85 #define SUN6I_WDT_SIZE 0x20 86 #define SUN6I_WDT_CFG 0x14 87 #define SUN6I_WDT_CFG_SYS __BIT(0) 88 #define SUN6I_WDT_MODE 0x18 89 #define SUN6I_WDT_MODE_EN __BIT(0) 90 91 #define SUN9I_WDT_BASE 0x06000ca0 92 #define SUN9I_WDT_SIZE 0x20 93 #define SUN9I_WDT_CFG 0x14 94 #define SUN9I_WDT_CFG_SYS __BIT(0) 95 #define SUN9I_WDT_MODE 0x18 96 #define SUN9I_WDT_MODE_EN __BIT(0) 97 98 extern struct bus_space armv7_generic_bs_tag; 99 extern struct bus_space armv7_generic_a4x_bs_tag; 100 extern struct arm32_bus_dma_tag armv7_generic_dma_tag; 101 102 static const struct pmap_devmap * 103 sunxi_platform_devmap(void) 104 { 105 static const struct pmap_devmap devmap[] = { 106 DEVMAP_ENTRY(SUNXI_CORE_VBASE, 107 SUNXI_CORE_PBASE, 108 SUNXI_CORE_SIZE), 109 DEVMAP_ENTRY_END 110 }; 111 112 return devmap; 113 } 114 115 static void 116 sunxi_platform_init_attach_args(struct fdt_attach_args *faa) 117 { 118 faa->faa_bst = &armv7_generic_bs_tag; 119 faa->faa_a4x_bst = &armv7_generic_a4x_bs_tag; 120 faa->faa_dmat = &armv7_generic_dma_tag; 121 } 122 123 static void 124 sunxi_platform_early_putchar(char c) 125 { 126 #ifdef CONSADDR 127 #define CONSADDR_VA ((CONSADDR - SUNXI_CORE_PBASE) + SUNXI_CORE_VBASE) 128 volatile uint32_t *uartaddr = (volatile uint32_t *)CONSADDR_VA; 129 130 while ((le32toh(uartaddr[com_lsr]) & LSR_TXRDY) == 0) 131 ; 132 133 uartaddr[com_data] = htole32(c); 134 #endif 135 } 136 137 static void 138 sunxi_platform_device_register(device_t self, void *aux) 139 { 140 } 141 142 static u_int 143 sunxi_platform_uart_freq(void) 144 { 145 return SUNXI_REF_FREQ; 146 } 147 148 static void 149 sunxi_platform_bootstrap(void) 150 { 151 if (match_bootconf_option(boot_args, "console", "fb")) { 152 void *fdt_data = __UNCONST(fdtbus_get_data()); 153 const int chosen_off = fdt_path_offset(fdt_data, "/chosen"); 154 const int framebuffer_off = 155 fdt_path_offset(fdt_data, "/chosen/framebuffer"); 156 if (chosen_off >= 0 && framebuffer_off >= 0) 157 fdt_setprop_string(fdt_data, chosen_off, "stdout-path", 158 "/chosen/framebuffer"); 159 } 160 } 161 162 static void 163 sunxi_platform_psci_bootstrap(void) 164 { 165 psci_fdt_bootstrap(); 166 sunxi_platform_bootstrap(); 167 } 168 169 static void 170 sun4i_platform_reset(void) 171 { 172 bus_space_tag_t bst = &armv7_generic_bs_tag; 173 bus_space_handle_t bsh; 174 175 bus_space_map(bst, SUN4I_WDT_BASE, SUN4I_WDT_SIZE, 0, &bsh); 176 177 bus_space_write_4(bst, bsh, SUN4I_WDT_CTRL, 178 SUN4I_WDT_CTRL_KEY | SUN4I_WDT_CTRL_RESTART); 179 for (;;) { 180 bus_space_write_4(bst, bsh, SUN4I_WDT_MODE, 181 SUN4I_WDT_MODE_EN | SUN4I_WDT_MODE_RST_EN); 182 } 183 } 184 185 static void 186 sun4i_platform_delay(u_int n) 187 { 188 static bus_space_tag_t bst = &armv7_generic_bs_tag; 189 static bus_space_handle_t bsh = 0; 190 const long incs_per_us = SUNXI_REF_FREQ / 1000000; 191 long ticks = n * incs_per_us; 192 uint32_t cur, prev; 193 194 if (bsh == 0) { 195 bus_space_map(bst, SUN4I_TIMER_BASE, SUN4I_TIMER_SIZE, 0, &bsh); 196 197 /* Enable Timer 1 */ 198 bus_space_write_4(bst, bsh, SUN4I_TIMER_1_INTV_VALUE, ~0U); 199 bus_space_write_4(bst, bsh, SUN4I_TIMER_1_CTRL, 200 SUN4I_TIMER_1_CTRL_EN | 201 SUN4I_TIMER_1_CTRL_RELOAD | 202 __SHIFTIN(SUN4I_TIMER_1_CTRL_CLK_SRC_OSC24M, 203 SUN4I_TIMER_1_CTRL_CLK_SRC)); 204 } 205 206 prev = ~bus_space_read_4(bst, bsh, SUN4I_TIMER_1_VAL); 207 while (ticks > 0) { 208 cur = ~bus_space_read_4(bst, bsh, SUN4I_TIMER_1_VAL); 209 if (cur > prev) 210 ticks -= (cur - prev); 211 else 212 ticks -= (~0U - cur + prev); 213 prev = cur; 214 } 215 } 216 217 static void 218 sun6i_platform_reset(void) 219 { 220 bus_space_tag_t bst = &armv7_generic_bs_tag; 221 bus_space_handle_t bsh; 222 223 bus_space_map(bst, SUN6I_WDT_BASE, SUN6I_WDT_SIZE, 0, &bsh); 224 225 bus_space_write_4(bst, bsh, SUN6I_WDT_CFG, SUN6I_WDT_CFG_SYS); 226 bus_space_write_4(bst, bsh, SUN6I_WDT_MODE, SUN6I_WDT_MODE_EN); 227 } 228 229 static void 230 sun9i_platform_reset(void) 231 { 232 bus_space_tag_t bst = &armv7_generic_bs_tag; 233 bus_space_handle_t bsh; 234 235 bus_space_map(bst, SUN9I_WDT_BASE, SUN9I_WDT_SIZE, 0, &bsh); 236 237 bus_space_write_4(bst, bsh, SUN9I_WDT_CFG, SUN9I_WDT_CFG_SYS); 238 bus_space_write_4(bst, bsh, SUN9I_WDT_MODE, SUN9I_WDT_MODE_EN); 239 } 240 241 static const struct arm_platform sun4i_platform = { 242 .devmap = sunxi_platform_devmap, 243 .bootstrap = sunxi_platform_bootstrap, 244 .init_attach_args = sunxi_platform_init_attach_args, 245 .early_putchar = sunxi_platform_early_putchar, 246 .device_register = sunxi_platform_device_register, 247 .reset = sun4i_platform_reset, 248 .delay = sun4i_platform_delay, 249 .uart_freq = sunxi_platform_uart_freq, 250 }; 251 252 ARM_PLATFORM(sun4i_a10, "allwinner,sun4i-a10", &sun4i_platform); 253 254 static const struct arm_platform sun5i_platform = { 255 .devmap = sunxi_platform_devmap, 256 .bootstrap = sunxi_platform_bootstrap, 257 .init_attach_args = sunxi_platform_init_attach_args, 258 .early_putchar = sunxi_platform_early_putchar, 259 .device_register = sunxi_platform_device_register, 260 .reset = sun4i_platform_reset, 261 .delay = sun4i_platform_delay, 262 .uart_freq = sunxi_platform_uart_freq, 263 }; 264 265 ARM_PLATFORM(sun5i_a13, "allwinner,sun5i-a13", &sun5i_platform); 266 ARM_PLATFORM(sun5i_gr8, "nextthing,gr8", &sun5i_platform); 267 268 static const struct arm_platform sun6i_platform = { 269 .devmap = sunxi_platform_devmap, 270 .bootstrap = sunxi_platform_psci_bootstrap, 271 .init_attach_args = sunxi_platform_init_attach_args, 272 .early_putchar = sunxi_platform_early_putchar, 273 .device_register = sunxi_platform_device_register, 274 .reset = sun6i_platform_reset, 275 .delay = gtmr_delay, 276 .uart_freq = sunxi_platform_uart_freq, 277 }; 278 279 ARM_PLATFORM(sun6i_a31, "allwinner,sun6i-a31", &sun6i_platform); 280 281 static const struct arm_platform sun7i_platform = { 282 .devmap = sunxi_platform_devmap, 283 .bootstrap = sunxi_platform_psci_bootstrap, 284 .init_attach_args = sunxi_platform_init_attach_args, 285 .early_putchar = sunxi_platform_early_putchar, 286 .device_register = sunxi_platform_device_register, 287 .reset = sun4i_platform_reset, 288 .delay = sun4i_platform_delay, 289 .uart_freq = sunxi_platform_uart_freq, 290 }; 291 292 ARM_PLATFORM(sun7i_a20, "allwinner,sun7i-a20", &sun7i_platform); 293 294 static const struct arm_platform sun8i_platform = { 295 .devmap = sunxi_platform_devmap, 296 .bootstrap = sunxi_platform_psci_bootstrap, 297 .init_attach_args = sunxi_platform_init_attach_args, 298 .early_putchar = sunxi_platform_early_putchar, 299 .device_register = sunxi_platform_device_register, 300 .reset = sun6i_platform_reset, 301 .delay = gtmr_delay, 302 .uart_freq = sunxi_platform_uart_freq, 303 }; 304 305 ARM_PLATFORM(sun8i_h2plus, "allwinner,sun8i-h2-plus", &sun8i_platform); 306 ARM_PLATFORM(sun8i_h3, "allwinner,sun8i-h3", &sun8i_platform); 307 ARM_PLATFORM(sun8i_a83t, "allwinner,sun8i-a83t", &sun8i_platform); 308 309 static const struct arm_platform sun9i_platform = { 310 .devmap = sunxi_platform_devmap, 311 .bootstrap = sunxi_platform_bootstrap, 312 .init_attach_args = sunxi_platform_init_attach_args, 313 .early_putchar = sunxi_platform_early_putchar, 314 .device_register = sunxi_platform_device_register, 315 .reset = sun9i_platform_reset, 316 .delay = gtmr_delay, 317 .uart_freq = sunxi_platform_uart_freq, 318 }; 319 320 ARM_PLATFORM(sun9i_a80, "allwinner,sun9i-a80", &sun9i_platform); 321 322 static const struct arm_platform sun50i_platform = { 323 .devmap = sunxi_platform_devmap, 324 .bootstrap = sunxi_platform_bootstrap, 325 .init_attach_args = sunxi_platform_init_attach_args, 326 .early_putchar = sunxi_platform_early_putchar, 327 .device_register = sunxi_platform_device_register, 328 .reset = sun6i_platform_reset, 329 .delay = gtmr_delay, 330 .uart_freq = sunxi_platform_uart_freq, 331 }; 332 333 ARM_PLATFORM(sun50i_a64, "allwinner,sun50i-a64", &sun50i_platform); 334 ARM_PLATFORM(sun50i_h5, "allwinner,sun50i-h5", &sun50i_platform); 335
Indexes created Tue Sep 23 23:09:58 GMT 2025