1187423Sgonzo/*- 2187423Sgonzo * Copyright (c) 2009 Oleksandr Tymoshenko 3187423Sgonzo * All rights reserved. 4187423Sgonzo * 5187423Sgonzo * Redistribution and use in source and binary forms, with or without 6187423Sgonzo * modification, are permitted provided that the following conditions 7187423Sgonzo * are met: 8187423Sgonzo * 1. Redistributions of source code must retain the above copyright 9187423Sgonzo * notice, this list of conditions and the following disclaimer. 10187423Sgonzo * 2. Redistributions in binary form must reproduce the above copyright 11187423Sgonzo * notice, this list of conditions and the following disclaimer in the 12187423Sgonzo * documentation and/or other materials provided with the distribution. 13187423Sgonzo * 14187423Sgonzo * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15187423Sgonzo * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16187423Sgonzo * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17187423Sgonzo * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18187423Sgonzo * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19187423Sgonzo * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20187423Sgonzo * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21187423Sgonzo * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22187423Sgonzo * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23187423Sgonzo * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24187423Sgonzo * SUCH DAMAGE. 25187423Sgonzo */ 26187423Sgonzo 27187423Sgonzo#include <sys/cdefs.h> 28187423Sgonzo__FBSDID("$FreeBSD$"); 29187423Sgonzo 30187423Sgonzo#include "opt_ddb.h" 31230195Sadrian#include "opt_ar71xx.h" 32187423Sgonzo 33187423Sgonzo#include <sys/param.h> 34187423Sgonzo#include <sys/conf.h> 35187423Sgonzo#include <sys/kernel.h> 36187423Sgonzo#include <sys/systm.h> 37187423Sgonzo#include <sys/bus.h> 38187423Sgonzo#include <sys/cons.h> 39187423Sgonzo#include <sys/kdb.h> 40198562Sthompsa#include <sys/reboot.h> 41187423Sgonzo 42187423Sgonzo#include <vm/vm.h> 43187423Sgonzo#include <vm/vm_page.h> 44187423Sgonzo 45192178Sgonzo#include <net/ethernet.h> 46192178Sgonzo 47187423Sgonzo#include <machine/clock.h> 48187423Sgonzo#include <machine/cpu.h> 49223562Skevlo#include <machine/cpuregs.h> 50187423Sgonzo#include <machine/hwfunc.h> 51187423Sgonzo#include <machine/md_var.h> 52187423Sgonzo#include <machine/trap.h> 53187423Sgonzo#include <machine/vmparam.h> 54187423Sgonzo 55187456Sgonzo#include <mips/atheros/ar71xxreg.h> 56187423Sgonzo 57211476Sadrian#include <mips/atheros/ar71xx_setup.h> 58211476Sadrian#include <mips/atheros/ar71xx_cpudef.h> 59211476Sadrian 60223562Skevlo#include <mips/sentry5/s5reg.h> 61223562Skevlo 62202954Sgonzoextern char edata[], end[]; 63202954Sgonzo 64192178Sgonzouint32_t ar711_base_mac[ETHER_ADDR_LEN]; 65198562Sthompsa/* 4KB static data aread to keep a copy of the bootload env until 66198562Sthompsa the dynamic kenv is setup */ 67198562Sthompsachar boot1_env[4096]; 68187423Sgonzo 69198562Sthompsa/* 70198562Sthompsa * We get a string in from Redboot with the all the arguments together, 71198562Sthompsa * "foo=bar bar=baz". Split them up and save in kenv. 72198562Sthompsa */ 73198562Sthompsastatic void 74198562Sthompsaparse_argv(char *str) 75198562Sthompsa{ 76198562Sthompsa char *n, *v; 77198562Sthompsa 78198562Sthompsa while ((v = strsep(&str, " ")) != NULL) { 79198562Sthompsa if (*v == '\0') 80198562Sthompsa continue; 81198562Sthompsa if (*v == '-') { 82198562Sthompsa while (*v != '\0') { 83198562Sthompsa v++; 84198562Sthompsa switch (*v) { 85198562Sthompsa case 'a': boothowto |= RB_ASKNAME; break; 86198562Sthompsa case 'd': boothowto |= RB_KDB; break; 87198562Sthompsa case 'g': boothowto |= RB_GDB; break; 88198562Sthompsa case 's': boothowto |= RB_SINGLE; break; 89198562Sthompsa case 'v': boothowto |= RB_VERBOSE; break; 90198562Sthompsa } 91198562Sthompsa } 92198562Sthompsa } else { 93198562Sthompsa n = strsep(&v, "="); 94198562Sthompsa if (v == NULL) 95198562Sthompsa setenv(n, "1"); 96198562Sthompsa else 97198562Sthompsa setenv(n, v); 98198562Sthompsa } 99198562Sthompsa } 100198562Sthompsa} 101198562Sthompsa 102187423Sgonzovoid 103198669Srrsplatform_cpu_init() 104198669Srrs{ 105198669Srrs /* Nothing special */ 106198669Srrs} 107198669Srrs 108198669Srrsvoid 109187423Sgonzoplatform_reset(void) 110187423Sgonzo{ 111211480Sadrian ar71xx_device_stop(RST_RESET_FULL_CHIP); 112187463Sgonzo /* Wait for reset */ 113187463Sgonzo while(1) 114187463Sgonzo ; 115187423Sgonzo} 116187423Sgonzo 117220056Sadrian/* 118220056Sadrian * Obtain the MAC address via the Redboot environment. 119220056Sadrian */ 120220056Sadrianstatic void 121220056Sadrianar71xx_redboot_get_macaddr(void) 122220056Sadrian{ 123220056Sadrian char *var; 124220056Sadrian int count = 0; 125220056Sadrian 126220056Sadrian /* 127220056Sadrian * "ethaddr" is passed via envp on RedBoot platforms 128220056Sadrian * "kmac" is passed via argv on RouterBOOT platforms 129220056Sadrian */ 130220056Sadrian if ((var = getenv("ethaddr")) != NULL || 131220056Sadrian (var = getenv("kmac")) != NULL) { 132220056Sadrian count = sscanf(var, "%x%*c%x%*c%x%*c%x%*c%x%*c%x", 133220056Sadrian &ar711_base_mac[0], &ar711_base_mac[1], 134220056Sadrian &ar711_base_mac[2], &ar711_base_mac[3], 135220056Sadrian &ar711_base_mac[4], &ar711_base_mac[5]); 136220056Sadrian if (count < 6) 137220056Sadrian memset(ar711_base_mac, 0, 138220056Sadrian sizeof(ar711_base_mac)); 139220056Sadrian freeenv(var); 140220056Sadrian } 141220056Sadrian} 142220056Sadrian 143187423Sgonzovoid 144187423Sgonzoplatform_start(__register_t a0 __unused, __register_t a1 __unused, 145187423Sgonzo __register_t a2 __unused, __register_t a3 __unused) 146187423Sgonzo{ 147195513Sgonzo uint64_t platform_counter_freq; 148227924Sadrian int argc = 0, i; 149227924Sadrian char **argv = NULL, **envp = NULL; 150202954Sgonzo vm_offset_t kernend; 151187423Sgonzo 152202954Sgonzo /* 153202954Sgonzo * clear the BSS and SBSS segments, this should be first call in 154202954Sgonzo * the function 155202954Sgonzo */ 156202954Sgonzo kernend = (vm_offset_t)&end; 157187423Sgonzo memset(&edata, 0, kernend - (vm_offset_t)(&edata)); 158187423Sgonzo 159202954Sgonzo mips_postboot_fixup(); 160202954Sgonzo 161201845Simp /* Initialize pcpu stuff */ 162201881Simp mips_pcpu0_init(); 163201845Simp 164227924Sadrian /* 165227924Sadrian * Until some more sensible abstractions for uboot/redboot 166227924Sadrian * environment handling, we have to make this a compile-time 167227924Sadrian * hack. The existing code handles the uboot environment 168227924Sadrian * very incorrectly so we should just ignore initialising 169227924Sadrian * the relevant pointers. 170227924Sadrian */ 171227924Sadrian#ifndef AR71XX_ENV_UBOOT 172192178Sgonzo argc = a0; 173192178Sgonzo argv = (char**)a1; 174192178Sgonzo envp = (char**)a2; 175227924Sadrian#endif 176192178Sgonzo /* 177192178Sgonzo * Protect ourselves from garbage in registers 178192178Sgonzo */ 179192178Sgonzo if (MIPS_IS_VALID_PTR(envp)) { 180212774Sthompsa for (i = 0; envp[i]; i += 2) { 181192178Sgonzo if (strcmp(envp[i], "memsize") == 0) 182192178Sgonzo realmem = btoc(strtoul(envp[i+1], NULL, 16)); 183192178Sgonzo } 184192178Sgonzo } 185192178Sgonzo 186192178Sgonzo /* 187192178Sgonzo * Just wild guess. RedBoot let us down and didn't reported 188192178Sgonzo * memory size 189192178Sgonzo */ 190192178Sgonzo if (realmem == 0) 191192178Sgonzo realmem = btoc(32*1024*1024); 192192178Sgonzo 193220052Sadrian /* 194220052Sadrian * Allow build-time override in case Redboot lies 195220052Sadrian * or in other situations (eg where there's u-boot) 196220052Sadrian * where there isn't (yet) a convienent method of 197220052Sadrian * being told how much RAM is available. 198220052Sadrian * 199220052Sadrian * This happens on at least the Ubiquiti LS-SR71A 200220052Sadrian * board, where redboot says there's 16mb of RAM 201220052Sadrian * but in fact there's 32mb. 202220052Sadrian */ 203220052Sadrian#if defined(AR71XX_REALMEM) 204220096Sadrian realmem = btoc(AR71XX_REALMEM); 205220052Sadrian#endif 206220052Sadrian 207187424Sgonzo /* phys_avail regions are in bytes */ 208202954Sgonzo phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end); 209187424Sgonzo phys_avail[1] = ctob(realmem); 210187423Sgonzo 211216318Sgonzo dump_avail[0] = phys_avail[0]; 212216318Sgonzo dump_avail[1] = phys_avail[1] - phys_avail[0]; 213216318Sgonzo 214187424Sgonzo physmem = realmem; 215187423Sgonzo 216187423Sgonzo /* 217187424Sgonzo * ns8250 uart code uses DELAY so ticker should be inititalized 218187424Sgonzo * before cninit. And tick_init_params refers to hz, so * init_param1 219187424Sgonzo * should be called first. 220187424Sgonzo */ 221187424Sgonzo init_param1(); 222211476Sadrian 223211476Sadrian /* Detect the system type - this is needed for subsequent chipset-specific calls */ 224211476Sadrian ar71xx_detect_sys_type(); 225211476Sadrian ar71xx_detect_sys_frequency(); 226211476Sadrian 227195513Sgonzo platform_counter_freq = ar71xx_cpu_freq(); 228192365Sgonzo mips_timer_init_params(platform_counter_freq, 1); 229187424Sgonzo cninit(); 230198562Sthompsa init_static_kenv(boot1_env, sizeof(boot1_env)); 231187423Sgonzo 232211476Sadrian printf("CPU platform: %s\n", ar71xx_get_system_type()); 233211476Sadrian printf("CPU Frequency=%d MHz\n", u_ar71xx_cpu_freq / 1000000); 234211476Sadrian printf("CPU DDR Frequency=%d MHz\n", u_ar71xx_ddr_freq / 1000000); 235248865Sadrian printf("CPU AHB Frequency=%d MHz\n", u_ar71xx_ahb_freq / 1000000); 236192132Sgonzo printf("platform frequency: %lld\n", platform_counter_freq); 237248865Sadrian printf("CPU reference clock: %d MHz\n", u_ar71xx_refclk / 1000000); 238187424Sgonzo printf("arguments: \n"); 239187423Sgonzo printf(" a0 = %08x\n", a0); 240187423Sgonzo printf(" a1 = %08x\n", a1); 241187423Sgonzo printf(" a2 = %08x\n", a2); 242187423Sgonzo printf(" a3 = %08x\n", a3); 243187423Sgonzo 244227924Sadrian /* 245227924Sadrian * XXX this code is very redboot specific. 246227924Sadrian */ 247192178Sgonzo printf("Cmd line:"); 248192178Sgonzo if (MIPS_IS_VALID_PTR(argv)) { 249198562Sthompsa for (i = 0; i < argc; i++) { 250192178Sgonzo printf(" %s", argv[i]); 251198562Sthompsa parse_argv(argv[i]); 252198562Sthompsa } 253192178Sgonzo } 254192178Sgonzo else 255192178Sgonzo printf ("argv is invalid"); 256192178Sgonzo printf("\n"); 257192178Sgonzo 258192178Sgonzo printf("Environment:\n"); 259192178Sgonzo if (MIPS_IS_VALID_PTR(envp)) { 260198562Sthompsa for (i = 0; envp[i]; i+=2) { 261192178Sgonzo printf(" %s = %s\n", envp[i], envp[i+1]); 262198562Sthompsa setenv(envp[i], envp[i+1]); 263198562Sthompsa } 264192178Sgonzo } 265192178Sgonzo else 266192178Sgonzo printf ("envp is invalid\n"); 267192178Sgonzo 268220056Sadrian /* Redboot if_arge MAC address is in the environment */ 269220056Sadrian ar71xx_redboot_get_macaddr(); 270212774Sthompsa 271187424Sgonzo init_param2(physmem); 272187424Sgonzo mips_cpu_init(); 273187424Sgonzo pmap_bootstrap(); 274187424Sgonzo mips_proc0_init(); 275187424Sgonzo mutex_init(); 276187423Sgonzo 277188882Sgonzo /* 278188882Sgonzo * Reset USB devices 279188882Sgonzo */ 280211481Sadrian ar71xx_init_usb_peripheral(); 281188882Sgonzo 282187424Sgonzo kdb_init(); 283202849Simp#ifdef KDB 284202849Simp if (boothowto & RB_KDB) 285202849Simp kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); 286187423Sgonzo#endif 287187423Sgonzo} 288