1/*- 2 * Copyright (c) 2009 Oleksandr Tymoshenko 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD$"); 29 30#include "opt_ddb.h" 31 32#include <sys/param.h> 33#include <sys/conf.h> 34#include <sys/kernel.h> 35#include <sys/systm.h> 36#include <sys/bus.h> 37#include <sys/cons.h> 38#include <sys/kdb.h> 39#include <sys/reboot.h> 40 41#include <vm/vm.h> 42#include <vm/vm_page.h> 43 44#include <net/ethernet.h> 45 46#include <machine/clock.h> 47#include <machine/cpu.h> 48#include <machine/cpuregs.h> 49#include <machine/hwfunc.h> 50#include <machine/md_var.h> 51#include <machine/trap.h> 52#include <machine/vmparam.h> 53 54#include <mips/atheros/ar71xxreg.h> 55 56#include <mips/atheros/ar71xx_setup.h> 57#include <mips/atheros/ar71xx_cpudef.h> 58 59#include <mips/sentry5/s5reg.h> 60 61extern char edata[], end[]; 62 63uint32_t ar711_base_mac[ETHER_ADDR_LEN]; 64/* 4KB static data aread to keep a copy of the bootload env until 65 the dynamic kenv is setup */ 66char boot1_env[4096]; 67 68/* 69 * We get a string in from Redboot with the all the arguments together, 70 * "foo=bar bar=baz". Split them up and save in kenv. 71 */ 72static void 73parse_argv(char *str) 74{ 75 char *n, *v; 76 77 while ((v = strsep(&str, " ")) != NULL) { 78 if (*v == '\0') 79 continue; 80 if (*v == '-') { 81 while (*v != '\0') { 82 v++; 83 switch (*v) { 84 case 'a': boothowto |= RB_ASKNAME; break; 85 case 'd': boothowto |= RB_KDB; break; 86 case 'g': boothowto |= RB_GDB; break; 87 case 's': boothowto |= RB_SINGLE; break; 88 case 'v': boothowto |= RB_VERBOSE; break; 89 } 90 } 91 } else { 92 n = strsep(&v, "="); 93 if (v == NULL) 94 setenv(n, "1"); 95 else 96 setenv(n, v); 97 } 98 } 99} 100 101void 102platform_cpu_init() 103{ 104 /* Nothing special */ 105} 106 107void 108platform_halt(void) 109{ 110 111} 112 113void 114platform_identify(void) 115{ 116 117} 118 119void 120platform_reset(void) 121{ 122 ar71xx_device_stop(RST_RESET_FULL_CHIP); 123 /* Wait for reset */ 124 while(1) 125 ; 126} 127 128void 129platform_trap_enter(void) 130{ 131 132} 133 134void 135platform_trap_exit(void) 136{ 137 138} 139 140/* 141 * Obtain the MAC address via the Redboot environment. 142 */ 143static void 144ar71xx_redboot_get_macaddr(void) 145{ 146 char *var; 147 int count = 0; 148 149 /* 150 * "ethaddr" is passed via envp on RedBoot platforms 151 * "kmac" is passed via argv on RouterBOOT platforms 152 */ 153 if ((var = getenv("ethaddr")) != NULL || 154 (var = getenv("kmac")) != NULL) { 155 count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x", 156 &ar711_base_mac[0], &ar711_base_mac[1], 157 &ar711_base_mac[2], &ar711_base_mac[3], 158 &ar711_base_mac[4], &ar711_base_mac[5]); 159 if (count < 6) 160 memset(ar711_base_mac, 0, 161 sizeof(ar711_base_mac)); 162 freeenv(var); 163 } 164} 165 166void 167platform_start(__register_t a0 __unused, __register_t a1 __unused, 168 __register_t a2 __unused, __register_t a3 __unused) 169{ 170 uint64_t platform_counter_freq; 171 int argc, i; 172 char **argv, **envp; 173 vm_offset_t kernend; 174 175 /* 176 * clear the BSS and SBSS segments, this should be first call in 177 * the function 178 */ 179 kernend = (vm_offset_t)&end; 180 memset(&edata, 0, kernend - (vm_offset_t)(&edata)); 181 182 mips_postboot_fixup(); 183 184 /* Initialize pcpu stuff */ 185 mips_pcpu0_init(); 186 187 argc = a0; 188 argv = (char**)a1; 189 envp = (char**)a2; 190 /* 191 * Protect ourselves from garbage in registers 192 */ 193 if (MIPS_IS_VALID_PTR(envp)) { 194 for (i = 0; envp[i]; i += 2) { 195 if (strcmp(envp[i], "memsize") == 0) 196 realmem = btoc(strtoul(envp[i+1], NULL, 16)); 197 } 198 } 199 200 /* 201 * Just wild guess. RedBoot let us down and didn't reported 202 * memory size 203 */ 204 if (realmem == 0) 205 realmem = btoc(32*1024*1024); 206 207 /* 208 * Allow build-time override in case Redboot lies 209 * or in other situations (eg where there's u-boot) 210 * where there isn't (yet) a convienent method of 211 * being told how much RAM is available. 212 * 213 * This happens on at least the Ubiquiti LS-SR71A 214 * board, where redboot says there's 16mb of RAM 215 * but in fact there's 32mb. 216 */ 217#if defined(AR71XX_REALMEM) 218 realmem = btoc(AR71XX_REALMEM); 219#endif 220 221 /* phys_avail regions are in bytes */ 222 phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end); 223 phys_avail[1] = ctob(realmem); 224 225 dump_avail[0] = phys_avail[0]; 226 dump_avail[1] = phys_avail[1] - phys_avail[0]; 227 228 physmem = realmem; 229 230 /* 231 * ns8250 uart code uses DELAY so ticker should be inititalized 232 * before cninit. And tick_init_params refers to hz, so * init_param1 233 * should be called first. 234 */ 235 init_param1(); 236 237 /* Detect the system type - this is needed for subsequent chipset-specific calls */ 238 ar71xx_detect_sys_type(); 239 ar71xx_detect_sys_frequency(); 240 241 platform_counter_freq = ar71xx_cpu_freq(); 242 mips_timer_init_params(platform_counter_freq, 1); 243 cninit(); 244 init_static_kenv(boot1_env, sizeof(boot1_env)); 245 246 printf("CPU platform: %s\n", ar71xx_get_system_type()); 247 printf("CPU Frequency=%d MHz\n", u_ar71xx_cpu_freq / 1000000); 248 printf("CPU DDR Frequency=%d MHz\n", u_ar71xx_ddr_freq / 1000000); 249 printf("CPU AHB Frequency=%d MHz\n", u_ar71xx_ahb_freq / 1000000); 250 251 printf("platform frequency: %lld\n", platform_counter_freq); 252 printf("arguments: \n"); 253 printf(" a0 = %08x\n", a0); 254 printf(" a1 = %08x\n", a1); 255 printf(" a2 = %08x\n", a2); 256 printf(" a3 = %08x\n", a3); 257 258 printf("Cmd line:"); 259 if (MIPS_IS_VALID_PTR(argv)) { 260 for (i = 0; i < argc; i++) { 261 printf(" %s", argv[i]); 262 parse_argv(argv[i]); 263 } 264 } 265 else 266 printf ("argv is invalid"); 267 printf("\n"); 268 269 printf("Environment:\n"); 270 if (MIPS_IS_VALID_PTR(envp)) { 271 for (i = 0; envp[i]; i+=2) { 272 printf(" %s = %s\n", envp[i], envp[i+1]); 273 setenv(envp[i], envp[i+1]); 274 } 275 } 276 else 277 printf ("envp is invalid\n"); 278 279 /* Redboot if_arge MAC address is in the environment */ 280 ar71xx_redboot_get_macaddr(); 281 282 init_param2(physmem); 283 mips_cpu_init(); 284 pmap_bootstrap(); 285 mips_proc0_init(); 286 mutex_init(); 287 288 /* 289 * Reset USB devices 290 */ 291 ar71xx_init_usb_peripheral(); 292 293 kdb_init(); 294#ifdef KDB 295 if (boothowto & RB_KDB) 296 kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); 297#endif 298} 299