ar71xx_machdep.c revision 198562
11541Srgrimes/*- 21541Srgrimes * Copyright (c) 2009 Oleksandr Tymoshenko 31541Srgrimes * All rights reserved. 41541Srgrimes * 51541Srgrimes * Redistribution and use in source and binary forms, with or without 61541Srgrimes * modification, are permitted provided that the following conditions 71541Srgrimes * are met: 81541Srgrimes * 1. Redistributions of source code must retain the above copyright 91541Srgrimes * notice, this list of conditions and the following disclaimer. 101541Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111541Srgrimes * notice, this list of conditions and the following disclaimer in the 121541Srgrimes * documentation and/or other materials provided with the distribution. 131541Srgrimes * 141541Srgrimes * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 151541Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 161541Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 171541Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 181541Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 191541Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 201541Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 211541Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 221541Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 231541Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 241541Srgrimes * SUCH DAMAGE. 251541Srgrimes */ 261541Srgrimes 271541Srgrimes#include <sys/cdefs.h> 281541Srgrimes__FBSDID("$FreeBSD$"); 291541Srgrimes 301541Srgrimes#include <sys/param.h> 311541Srgrimes#include <machine/cpuregs.h> 321541Srgrimes 331541Srgrimes#include <mips/sentry5/s5reg.h> 341541Srgrimes 351541Srgrimes#include "opt_ddb.h" 361541Srgrimes 371541Srgrimes#include <sys/param.h> 381541Srgrimes#include <sys/conf.h> 399759Sbde#include <sys/kernel.h> 401541Srgrimes#include <sys/systm.h> 411541Srgrimes#include <sys/bus.h> 421541Srgrimes#include <sys/cons.h> 431541Srgrimes#include <sys/kdb.h> 441541Srgrimes#include <sys/reboot.h> 451541Srgrimes 461541Srgrimes#include <vm/vm.h> 471541Srgrimes#include <vm/vm_page.h> 481541Srgrimes 499507Sdg#include <net/ethernet.h> 501541Srgrimes 515455Sdg#include <machine/clock.h> 525455Sdg#include <machine/cpu.h> 539507Sdg#include <machine/hwfunc.h> 549507Sdg#include <machine/md_var.h> 559507Sdg#include <machine/trap.h> 569507Sdg#include <machine/vmparam.h> 579507Sdg 589507Sdg#include <mips/atheros/ar71xxreg.h> 591541Srgrimes 601541Srgrimesextern int *edata; 611541Srgrimesextern int *end; 621541Srgrimesuint32_t ar711_base_mac[ETHER_ADDR_LEN]; 631541Srgrimes/* 4KB static data aread to keep a copy of the bootload env until 641541Srgrimes the dynamic kenv is setup */ 651541Srgrimeschar boot1_env[4096]; 661541Srgrimes 671541Srgrimes/* 681541Srgrimes * We get a string in from Redboot with the all the arguments together, 691541Srgrimes * "foo=bar bar=baz". Split them up and save in kenv. 701541Srgrimes */ 711541Srgrimesstatic void 721541Srgrimesparse_argv(char *str) 731541Srgrimes{ 741541Srgrimes char *n, *v; 751541Srgrimes 761541Srgrimes while ((v = strsep(&str, " ")) != NULL) { 771541Srgrimes if (*v == '\0') 789759Sbde continue; 799759Sbde if (*v == '-') { 809759Sbde while (*v != '\0') { 819507Sdg v++; 825455Sdg switch (*v) { 837090Sbde case 'a': boothowto |= RB_ASKNAME; break; 849507Sdg case 'd': boothowto |= RB_KDB; break; 859507Sdg case 'g': boothowto |= RB_GDB; break; 869507Sdg case 's': boothowto |= RB_SINGLE; break; 875455Sdg case 'v': boothowto |= RB_VERBOSE; break; 889507Sdg } 895455Sdg } 905455Sdg } else { 919507Sdg n = strsep(&v, "="); 925455Sdg if (v == NULL) 935455Sdg setenv(n, "1"); 945455Sdg else 951541Srgrimes setenv(n, v); 961541Srgrimes } 975455Sdg } 98} 99 100void 101platform_halt(void) 102{ 103 104} 105 106void 107platform_identify(void) 108{ 109 110} 111 112void 113platform_reset(void) 114{ 115 uint32_t reg = ATH_READ_REG(AR71XX_RST_RESET); 116 117 ATH_WRITE_REG(AR71XX_RST_RESET, reg | RST_RESET_FULL_CHIP); 118 /* Wait for reset */ 119 while(1) 120 ; 121} 122 123void 124platform_trap_enter(void) 125{ 126 127} 128 129void 130platform_trap_exit(void) 131{ 132 133} 134 135void 136platform_start(__register_t a0 __unused, __register_t a1 __unused, 137 __register_t a2 __unused, __register_t a3 __unused) 138{ 139 vm_offset_t kernend; 140 uint64_t platform_counter_freq; 141 uint32_t reg; 142 int argc, i, count = 0; 143 char **argv, **envp; 144 145 /* clear the BSS and SBSS segments */ 146 kernend = round_page((vm_offset_t)&end); 147 memset(&edata, 0, kernend - (vm_offset_t)(&edata)); 148 149 argc = a0; 150 argv = (char**)a1; 151 envp = (char**)a2; 152 /* 153 * Protect ourselves from garbage in registers 154 */ 155 if (MIPS_IS_VALID_PTR(envp)) { 156 for (i = 0; envp[i]; i += 2) 157 { 158 if (strcmp(envp[i], "memsize") == 0) 159 realmem = btoc(strtoul(envp[i+1], NULL, 16)); 160 else if (strcmp(envp[i], "ethaddr") == 0) { 161 count = sscanf(envp[i+1], "%x.%x.%x.%x.%x.%x", 162 &ar711_base_mac[0], &ar711_base_mac[1], 163 &ar711_base_mac[2], &ar711_base_mac[3], 164 &ar711_base_mac[4], &ar711_base_mac[5]); 165 if (count < 6) 166 memset(ar711_base_mac, 0, 167 sizeof(ar711_base_mac)); 168 } 169 } 170 } 171 172 /* 173 * Just wild guess. RedBoot let us down and didn't reported 174 * memory size 175 */ 176 if (realmem == 0) 177 realmem = btoc(32*1024*1024); 178 179 /* phys_avail regions are in bytes */ 180 phys_avail[0] = MIPS_KSEG0_TO_PHYS((vm_offset_t)&end); 181 phys_avail[1] = ctob(realmem); 182 183 physmem = realmem; 184 185 /* 186 * ns8250 uart code uses DELAY so ticker should be inititalized 187 * before cninit. And tick_init_params refers to hz, so * init_param1 188 * should be called first. 189 */ 190 init_param1(); 191 platform_counter_freq = ar71xx_cpu_freq(); 192 mips_timer_init_params(platform_counter_freq, 1); 193 cninit(); 194 init_static_kenv(boot1_env, sizeof(boot1_env)); 195 196 printf("platform frequency: %lld\n", platform_counter_freq); 197 printf("arguments: \n"); 198 printf(" a0 = %08x\n", a0); 199 printf(" a1 = %08x\n", a1); 200 printf(" a2 = %08x\n", a2); 201 printf(" a3 = %08x\n", a3); 202 203 printf("Cmd line:"); 204 if (MIPS_IS_VALID_PTR(argv)) { 205 for (i = 0; i < argc; i++) { 206 printf(" %s", argv[i]); 207 parse_argv(argv[i]); 208 } 209 } 210 else 211 printf ("argv is invalid"); 212 printf("\n"); 213 214 printf("Environment:\n"); 215 if (MIPS_IS_VALID_PTR(envp)) { 216 for (i = 0; envp[i]; i+=2) { 217 printf(" %s = %s\n", envp[i], envp[i+1]); 218 setenv(envp[i], envp[i+1]); 219 } 220 } 221 else 222 printf ("envp is invalid\n"); 223 224 init_param2(physmem); 225 mips_cpu_init(); 226 pmap_bootstrap(); 227 mips_proc0_init(); 228 mutex_init(); 229 230 /* 231 * Reset USB devices 232 */ 233 reg = ATH_READ_REG(AR71XX_RST_RESET); 234 reg |= 235 RST_RESET_USB_OHCI_DLL | RST_RESET_USB_HOST | RST_RESET_USB_PHY; 236 ATH_WRITE_REG(AR71XX_RST_RESET, reg); 237 DELAY(1000); 238 reg &= 239 ~(RST_RESET_USB_OHCI_DLL | RST_RESET_USB_HOST | RST_RESET_USB_PHY); 240 ATH_WRITE_REG(AR71XX_RST_RESET, reg); 241 242 ATH_WRITE_REG(AR71XX_USB_CTRL_CONFIG, 243 USB_CTRL_CONFIG_OHCI_DES_SWAP | USB_CTRL_CONFIG_OHCI_BUF_SWAP | 244 USB_CTRL_CONFIG_EHCI_DES_SWAP | USB_CTRL_CONFIG_EHCI_BUF_SWAP); 245 246 ATH_WRITE_REG(AR71XX_USB_CTRL_FLADJ, 247 (32 << USB_CTRL_FLADJ_HOST_SHIFT) | (3 << USB_CTRL_FLADJ_A5_SHIFT)); 248 DELAY(1000); 249 250#ifdef DDB 251 kdb_init(); 252#endif 253} 254