1178173Simp/*- 2178173Simp * Copyright (c) 2006 Wojciech A. Koszek <wkoszek@FreeBSD.org> 3178173Simp * All rights reserved. 4178173Simp * 5178173Simp * Redistribution and use in source and binary forms, with or without 6178173Simp * modification, are permitted provided that the following conditions 7178173Simp * are met: 8178173Simp * 1. Redistributions of source code must retain the above copyright 9178173Simp * notice, this list of conditions and the following disclaimer. 10178173Simp * 2. Redistributions in binary form must reproduce the above copyright 11178173Simp * notice, this list of conditions and the following disclaimer in the 12178173Simp * documentation and/or other materials provided with the distribution. 13178173Simp * 14178173Simp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15178173Simp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16178173Simp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17178173Simp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18178173Simp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19178173Simp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20178173Simp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21178173Simp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22178173Simp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23178173Simp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24178173Simp * SUCH DAMAGE. 25178173Simp * 26178173Simp * $FreeBSD$ 27178173Simp */ 28178173Simp#include <sys/cdefs.h> 29178173Simp__FBSDID("$FreeBSD$"); 30178173Simp 31178173Simp#include "opt_ddb.h" 32178173Simp 33178173Simp#include <sys/param.h> 34178173Simp#include <sys/conf.h> 35178173Simp#include <sys/kernel.h> 36178173Simp#include <sys/systm.h> 37178173Simp#include <sys/imgact.h> 38178173Simp#include <sys/bio.h> 39178173Simp#include <sys/buf.h> 40178173Simp#include <sys/bus.h> 41178173Simp#include <sys/cpu.h> 42178173Simp#include <sys/cons.h> 43178173Simp#include <sys/exec.h> 44178173Simp#include <sys/ucontext.h> 45178173Simp#include <sys/proc.h> 46178173Simp#include <sys/kdb.h> 47178173Simp#include <sys/ptrace.h> 48178173Simp#include <sys/reboot.h> 49178173Simp#include <sys/signalvar.h> 50178173Simp#include <sys/sysent.h> 51178173Simp#include <sys/sysproto.h> 52178173Simp#include <sys/user.h> 53178173Simp 54178173Simp#include <vm/vm.h> 55178173Simp#include <vm/vm_object.h> 56178173Simp#include <vm/vm_page.h> 57178173Simp 58178173Simp#include <machine/clock.h> 59178173Simp#include <machine/cpu.h> 60178173Simp#include <machine/cpuregs.h> 61178173Simp#include <machine/hwfunc.h> 62178173Simp#include <machine/md_var.h> 63178173Simp#include <machine/pmap.h> 64178173Simp#include <machine/trap.h> 65178173Simp 66178173Simp#ifdef TICK_USE_YAMON_FREQ 67182901Sgonzo#include <mips/malta/yamon.h> 68178173Simp#endif 69178173Simp 70178173Simp#ifdef TICK_USE_MALTA_RTC 71178173Simp#include <mips/mips4k/malta/maltareg.h> 72178173Simp#include <dev/mc146818/mc146818reg.h> 73178173Simp#include <isa/rtc.h> 74178173Simp#endif 75178173Simp 76182901Sgonzo#include <mips/malta/maltareg.h> 77178173Simp 78178173Simpextern int *edata; 79178173Simpextern int *end; 80178173Simp 81178173Simpvoid lcd_init(void); 82178173Simpvoid lcd_puts(char *); 83178173Simpvoid malta_reset(void); 84178173Simp 85178173Simp/* 86249589Sadrian * Temporary boot environment used at startup. 87249589Sadrian */ 88249589Sadrianstatic char boot1_env[4096]; 89249589Sadrian 90249589Sadrian/* 91178173Simp * Offsets to MALTA LCD characters. 92178173Simp */ 93178173Simpstatic int malta_lcd_offs[] = { 94178173Simp MALTA_ASCIIPOS0, 95178173Simp MALTA_ASCIIPOS1, 96178173Simp MALTA_ASCIIPOS2, 97178173Simp MALTA_ASCIIPOS3, 98178173Simp MALTA_ASCIIPOS4, 99178173Simp MALTA_ASCIIPOS5, 100178173Simp MALTA_ASCIIPOS6, 101178173Simp MALTA_ASCIIPOS7 102178173Simp}; 103178173Simp 104202035Simpvoid 105202035Simpplatform_cpu_init() 106202035Simp{ 107202035Simp /* Nothing special */ 108202035Simp} 109202035Simp 110178173Simp/* 111178173Simp * Put character to Malta LCD at given position. 112178173Simp */ 113178173Simpstatic void 114178173Simpmalta_lcd_putc(int pos, char c) 115178173Simp{ 116178173Simp void *addr; 117178173Simp char *ch; 118178173Simp 119178173Simp if (pos < 0 || pos > 7) 120178173Simp return; 121178173Simp addr = (void *)(MALTA_ASCII_BASE + malta_lcd_offs[pos]); 122178173Simp ch = (char *)MIPS_PHYS_TO_KSEG0(addr); 123178173Simp *ch = c; 124178173Simp} 125178173Simp 126178173Simp/* 127178173Simp * Print given string on LCD. 128178173Simp */ 129178173Simpstatic void 130178173Simpmalta_lcd_print(char *str) 131178173Simp{ 132178173Simp int i; 133178173Simp 134178173Simp if (str == NULL) 135178173Simp return; 136178173Simp 137178173Simp for (i = 0; *str != '\0'; i++, str++) 138178173Simp malta_lcd_putc(i, *str); 139178173Simp} 140178173Simp 141178173Simpvoid 142178173Simplcd_init(void) 143178173Simp{ 144178173Simp malta_lcd_print("FreeBSD_"); 145178173Simp} 146178173Simp 147178173Simpvoid 148178173Simplcd_puts(char *s) 149178173Simp{ 150178173Simp malta_lcd_print(s); 151178173Simp} 152178173Simp 153178173Simp#ifdef TICK_USE_MALTA_RTC 154178173Simpstatic __inline uint8_t 155178173Simprtcin(uint8_t addr) 156178173Simp{ 157178173Simp 158178173Simp *((volatile uint8_t *) 159178173Simp MIPS_PHYS_TO_KSEG1(MALTA_PCI0_ADDR(MALTA_RTCADR))) = addr; 160178173Simp return (*((volatile uint8_t *) 161178173Simp MIPS_PHYS_TO_KSEG1(MALTA_PCI0_ADDR(MALTA_RTCDAT)))); 162178173Simp} 163178173Simp 164178173Simpstatic __inline void 165178173Simpwritertc(uint8_t addr, uint8_t val) 166178173Simp{ 167178173Simp 168178173Simp *((volatile uint8_t *) 169178173Simp MIPS_PHYS_TO_KSEG1(MALTA_PCI0_ADDR(MALTA_RTCADR))) = addr; 170178173Simp *((volatile uint8_t *) 171178173Simp MIPS_PHYS_TO_KSEG1(MALTA_PCI0_ADDR(MALTA_RTCDAT))) = val; 172178173Simp} 173178173Simp#endif 174178173Simp 175178173Simpstatic void 176178173Simpmips_init(void) 177178173Simp{ 178178173Simp int i; 179178173Simp 180178173Simp for (i = 0; i < 10; i++) { 181178173Simp phys_avail[i] = 0; 182178173Simp } 183178173Simp 184178173Simp /* phys_avail regions are in bytes */ 185202954Sgonzo phys_avail[0] = MIPS_KSEG0_TO_PHYS(kernel_kseg0_end); 186178173Simp phys_avail[1] = ctob(realmem); 187178173Simp 188216318Sgonzo dump_avail[0] = phys_avail[0]; 189216320Sgonzo dump_avail[1] = phys_avail[1]; 190216318Sgonzo 191178173Simp physmem = realmem; 192178173Simp 193178173Simp init_param1(); 194178173Simp init_param2(physmem); 195178173Simp mips_cpu_init(); 196178173Simp pmap_bootstrap(); 197178173Simp mips_proc0_init(); 198178173Simp mutex_init(); 199178173Simp kdb_init(); 200202849Simp#ifdef KDB 201202849Simp if (boothowto & RB_KDB) 202202849Simp kdb_enter(KDB_WHY_BOOTFLAGS, "Boot flags requested debugger"); 203178173Simp#endif 204178173Simp} 205178173Simp 206178173Simp/* 207178173Simp * Perform a board-level soft-reset. 208178173Simp * Note that this is not emulated by gxemul. 209178173Simp */ 210178173Simpvoid 211178173Simpplatform_reset(void) 212178173Simp{ 213178173Simp char *c; 214178173Simp 215178173Simp c = (char *)MIPS_PHYS_TO_KSEG0(MALTA_SOFTRES); 216178173Simp *c = MALTA_GORESET; 217178173Simp} 218178173Simp 219202035Simpstatic uint64_t 220202035Simpmalta_cpu_freq(void) 221202035Simp{ 222202035Simp uint64_t platform_counter_freq = 0; 223202035Simp 224202035Simp#if defined(TICK_USE_YAMON_FREQ) 225202035Simp /* 226202035Simp * If we are running on a board which uses YAMON firmware, 227202035Simp * then query CPU pipeline clock from the syscon object. 228202035Simp * If unsuccessful, use hard-coded default. 229202035Simp */ 230202035Simp platform_counter_freq = yamon_getcpufreq(); 231202035Simp 232202035Simp#elif defined(TICK_USE_MALTA_RTC) 233202035Simp /* 234202035Simp * If we are running on a board with the MC146818 RTC, 235202035Simp * use it to determine CPU pipeline clock frequency. 236202035Simp */ 237202035Simp u_int64_t counterval[2]; 238202035Simp 239202035Simp /* Set RTC to binary mode. */ 240202035Simp writertc(RTC_STATUSB, (rtcin(RTC_STATUSB) | RTCSB_BCD)); 241202035Simp 242202035Simp /* Busy-wait for falling edge of RTC update. */ 243202035Simp while (((rtcin(RTC_STATUSA) & RTCSA_TUP) == 0)) 244202035Simp ; 245202035Simp while (((rtcin(RTC_STATUSA)& RTCSA_TUP) != 0)) 246202035Simp ; 247202035Simp counterval[0] = mips_rd_count(); 248202035Simp 249202035Simp /* Busy-wait for falling edge of RTC update. */ 250202035Simp while (((rtcin(RTC_STATUSA) & RTCSA_TUP) == 0)) 251202035Simp ; 252202035Simp while (((rtcin(RTC_STATUSA)& RTCSA_TUP) != 0)) 253202035Simp ; 254202035Simp counterval[1] = mips_rd_count(); 255202035Simp 256202035Simp platform_counter_freq = counterval[1] - counterval[0]; 257202035Simp#endif 258202035Simp 259202035Simp if (platform_counter_freq == 0) 260202035Simp platform_counter_freq = MIPS_DEFAULT_HZ; 261202035Simp 262202035Simp return (platform_counter_freq); 263202035Simp} 264202035Simp 265178173Simpvoid 266178173Simpplatform_start(__register_t a0, __register_t a1, __register_t a2, 267178173Simp __register_t a3) 268178173Simp{ 269178173Simp vm_offset_t kernend; 270178173Simp uint64_t platform_counter_freq; 271178173Simp int argc = a0; 272255088Sgonzo int32_t *argv = (int32_t*)a1; 273255088Sgonzo int32_t *envp = (int32_t*)a2; 274178173Simp unsigned int memsize = a3; 275178173Simp int i; 276178173Simp 277178173Simp /* clear the BSS and SBSS segments */ 278202954Sgonzo kernend = (vm_offset_t)&end; 279178173Simp memset(&edata, 0, kernend - (vm_offset_t)(&edata)); 280178173Simp 281202954Sgonzo mips_postboot_fixup(); 282202954Sgonzo 283202035Simp mips_pcpu0_init(); 284202035Simp platform_counter_freq = malta_cpu_freq(); 285202035Simp mips_timer_early_init(platform_counter_freq); 286249589Sadrian init_static_kenv(boot1_env, sizeof(boot1_env)); 287202035Simp 288178173Simp cninit(); 289178173Simp printf("entry: platform_start()\n"); 290178173Simp 291178173Simp bootverbose = 1; 292255088Sgonzo /* 293255088Sgonzo * YAMON uses 32bit pointers to strings so 294255088Sgonzo * convert them to proper type manually 295255088Sgonzo */ 296178173Simp if (bootverbose) { 297178173Simp printf("cmd line: "); 298178173Simp for (i = 0; i < argc; i++) 299255088Sgonzo printf("%s ", (char*)(intptr_t)argv[i]); 300178173Simp printf("\n"); 301178173Simp 302178173Simp printf("envp:\n"); 303178173Simp for (i = 0; envp[i]; i += 2) 304255088Sgonzo printf("\t%s = %s\n", (char*)(intptr_t)envp[i], 305255088Sgonzo (char*)(intptr_t)envp[i+1]); 306178173Simp 307178173Simp printf("memsize = %08x\n", memsize); 308178173Simp } 309178173Simp 310178173Simp realmem = btoc(memsize); 311178173Simp mips_init(); 312178173Simp 313178173Simp mips_timer_init_params(platform_counter_freq, 0); 314178173Simp} 315