hdlg_machdep.c revision 1.2.10.4
1 1.2.10.4 yamt /* $NetBSD: hdlg_machdep.c,v 1.2.10.4 2008/01/21 09:36:10 yamt Exp $ */ 2 1.2.10.2 yamt 3 1.2.10.2 yamt /* 4 1.2.10.2 yamt * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc. 5 1.2.10.2 yamt * All rights reserved. 6 1.2.10.2 yamt * 7 1.2.10.2 yamt * Written by Jason R. Thorpe and Steve C. Woodford for Wasabi Systems, Inc. 8 1.2.10.2 yamt * 9 1.2.10.2 yamt * Redistribution and use in source and binary forms, with or without 10 1.2.10.2 yamt * modification, are permitted provided that the following conditions 11 1.2.10.2 yamt * are met: 12 1.2.10.2 yamt * 1. Redistributions of source code must retain the above copyright 13 1.2.10.2 yamt * notice, this list of conditions and the following disclaimer. 14 1.2.10.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 15 1.2.10.2 yamt * notice, this list of conditions and the following disclaimer in the 16 1.2.10.2 yamt * documentation and/or other materials provided with the distribution. 17 1.2.10.2 yamt * 3. All advertising materials mentioning features or use of this software 18 1.2.10.2 yamt * must display the following acknowledgement: 19 1.2.10.2 yamt * This product includes software developed for the NetBSD Project by 20 1.2.10.2 yamt * Wasabi Systems, Inc. 21 1.2.10.2 yamt * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 1.2.10.2 yamt * or promote products derived from this software without specific prior 23 1.2.10.2 yamt * written permission. 24 1.2.10.2 yamt * 25 1.2.10.2 yamt * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 1.2.10.2 yamt * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 1.2.10.2 yamt * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 1.2.10.2 yamt * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 1.2.10.2 yamt * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 1.2.10.2 yamt * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 1.2.10.2 yamt * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 1.2.10.2 yamt * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 1.2.10.2 yamt * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 1.2.10.2 yamt * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 1.2.10.2 yamt * POSSIBILITY OF SUCH DAMAGE. 36 1.2.10.2 yamt */ 37 1.2.10.2 yamt 38 1.2.10.2 yamt /* 39 1.2.10.2 yamt * Copyright (c) 1997,1998 Mark Brinicombe. 40 1.2.10.2 yamt * Copyright (c) 1997,1998 Causality Limited. 41 1.2.10.2 yamt * All rights reserved. 42 1.2.10.2 yamt * 43 1.2.10.2 yamt * Redistribution and use in source and binary forms, with or without 44 1.2.10.2 yamt * modification, are permitted provided that the following conditions 45 1.2.10.2 yamt * are met: 46 1.2.10.2 yamt * 1. Redistributions of source code must retain the above copyright 47 1.2.10.2 yamt * notice, this list of conditions and the following disclaimer. 48 1.2.10.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 49 1.2.10.2 yamt * notice, this list of conditions and the following disclaimer in the 50 1.2.10.2 yamt * documentation and/or other materials provided with the distribution. 51 1.2.10.2 yamt * 3. All advertising materials mentioning features or use of this software 52 1.2.10.2 yamt * must display the following acknowledgement: 53 1.2.10.2 yamt * This product includes software developed by Mark Brinicombe 54 1.2.10.2 yamt * for the NetBSD Project. 55 1.2.10.2 yamt * 4. The name of the company nor the name of the author may be used to 56 1.2.10.2 yamt * endorse or promote products derived from this software without specific 57 1.2.10.2 yamt * prior written permission. 58 1.2.10.2 yamt * 59 1.2.10.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 60 1.2.10.2 yamt * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 61 1.2.10.2 yamt * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 62 1.2.10.2 yamt * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 63 1.2.10.2 yamt * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 64 1.2.10.2 yamt * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 65 1.2.10.2 yamt * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 1.2.10.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 1.2.10.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 1.2.10.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 1.2.10.2 yamt * SUCH DAMAGE. 70 1.2.10.2 yamt * 71 1.2.10.2 yamt * Machine dependant functions for kernel setup for GigaLANDISK 72 1.2.10.2 yamt * using RedBoot firmware. 73 1.2.10.2 yamt */ 74 1.2.10.2 yamt 75 1.2.10.2 yamt #include <sys/cdefs.h> 76 1.2.10.4 yamt __KERNEL_RCSID(0, "$NetBSD: hdlg_machdep.c,v 1.2.10.4 2008/01/21 09:36:10 yamt Exp $"); 77 1.2.10.2 yamt 78 1.2.10.2 yamt #include "opt_ddb.h" 79 1.2.10.2 yamt #include "opt_kgdb.h" 80 1.2.10.2 yamt #include "opt_pmap_debug.h" 81 1.2.10.2 yamt 82 1.2.10.2 yamt #include <sys/param.h> 83 1.2.10.2 yamt #include <sys/device.h> 84 1.2.10.2 yamt #include <sys/systm.h> 85 1.2.10.2 yamt #include <sys/kernel.h> 86 1.2.10.2 yamt #include <sys/exec.h> 87 1.2.10.2 yamt #include <sys/proc.h> 88 1.2.10.2 yamt #include <sys/msgbuf.h> 89 1.2.10.2 yamt #include <sys/reboot.h> 90 1.2.10.2 yamt #include <sys/termios.h> 91 1.2.10.2 yamt #include <sys/ksyms.h> 92 1.2.10.2 yamt 93 1.2.10.2 yamt #include <uvm/uvm_extern.h> 94 1.2.10.2 yamt 95 1.2.10.2 yamt #include <dev/cons.h> 96 1.2.10.2 yamt 97 1.2.10.2 yamt #include <machine/db_machdep.h> 98 1.2.10.2 yamt #include <ddb/db_sym.h> 99 1.2.10.2 yamt #include <ddb/db_extern.h> 100 1.2.10.2 yamt 101 1.2.10.2 yamt #include <machine/bootconfig.h> 102 1.2.10.2 yamt #include <machine/bus.h> 103 1.2.10.2 yamt #include <machine/cpu.h> 104 1.2.10.2 yamt #include <machine/frame.h> 105 1.2.10.2 yamt #include <arm/undefined.h> 106 1.2.10.2 yamt 107 1.2.10.2 yamt #include <arm/arm32/machdep.h> 108 1.2.10.2 yamt 109 1.2.10.2 yamt #include <arm/xscale/i80321reg.h> 110 1.2.10.2 yamt #include <arm/xscale/i80321var.h> 111 1.2.10.2 yamt 112 1.2.10.2 yamt #include <dev/pci/ppbreg.h> 113 1.2.10.2 yamt 114 1.2.10.2 yamt #include <evbarm/hdl_g/hdlgreg.h> 115 1.2.10.2 yamt #include <evbarm/hdl_g/hdlgvar.h> 116 1.2.10.2 yamt #include <evbarm/hdl_g/obiovar.h> 117 1.2.10.2 yamt 118 1.2.10.2 yamt #include "ksyms.h" 119 1.2.10.2 yamt 120 1.2.10.2 yamt /* Kernel text starts 2MB in from the bottom of the kernel address space. */ 121 1.2.10.2 yamt #define KERNEL_TEXT_BASE (KERNEL_BASE + 0x00200000) 122 1.2.10.2 yamt #define KERNEL_VM_BASE (KERNEL_BASE + 0x01000000) 123 1.2.10.2 yamt 124 1.2.10.2 yamt /* 125 1.2.10.2 yamt * The range 0xc1000000 - 0xccffffff is available for kernel VM space 126 1.2.10.2 yamt * Core-logic registers and I/O mappings occupy 0xfd000000 - 0xffffffff 127 1.2.10.2 yamt */ 128 1.2.10.2 yamt #define KERNEL_VM_SIZE 0x0C000000 129 1.2.10.2 yamt 130 1.2.10.2 yamt /* 131 1.2.10.2 yamt * Address to call from cpu_reset() to reset the machine. 132 1.2.10.2 yamt * This is machine architecture dependant as it varies depending 133 1.2.10.2 yamt * on where the ROM appears when you turn the MMU off. 134 1.2.10.2 yamt * 135 1.2.10.2 yamt * XXX Not actually used on hdlg -- clean up the generic 136 1.2.10.2 yamt * ARM code. 137 1.2.10.2 yamt */ 138 1.2.10.2 yamt u_int cpu_reset_address = 0x00000000; 139 1.2.10.2 yamt 140 1.2.10.2 yamt /* Define various stack sizes in pages */ 141 1.2.10.2 yamt #define IRQ_STACK_SIZE 1 142 1.2.10.2 yamt #define ABT_STACK_SIZE 1 143 1.2.10.2 yamt #define UND_STACK_SIZE 1 144 1.2.10.2 yamt 145 1.2.10.2 yamt BootConfig bootconfig; /* Boot config storage */ 146 1.2.10.2 yamt char *boot_args = NULL; 147 1.2.10.2 yamt char *boot_file = NULL; 148 1.2.10.2 yamt 149 1.2.10.2 yamt vm_offset_t physical_start; 150 1.2.10.2 yamt vm_offset_t physical_freestart; 151 1.2.10.2 yamt vm_offset_t physical_freeend; 152 1.2.10.2 yamt vm_offset_t physical_end; 153 1.2.10.2 yamt u_int free_pages; 154 1.2.10.2 yamt vm_offset_t pagetables_start; 155 1.2.10.2 yamt int physmem = 0; 156 1.2.10.2 yamt 157 1.2.10.2 yamt /*int debug_flags;*/ 158 1.2.10.2 yamt #ifndef PMAP_STATIC_L1S 159 1.2.10.2 yamt int max_processes = 64; /* Default number */ 160 1.2.10.2 yamt #endif /* !PMAP_STATIC_L1S */ 161 1.2.10.2 yamt 162 1.2.10.2 yamt /* Physical and virtual addresses for some global pages */ 163 1.2.10.2 yamt pv_addr_t systempage; 164 1.2.10.2 yamt pv_addr_t irqstack; 165 1.2.10.2 yamt pv_addr_t undstack; 166 1.2.10.2 yamt pv_addr_t abtstack; 167 1.2.10.2 yamt pv_addr_t kernelstack; 168 1.2.10.2 yamt pv_addr_t minidataclean; 169 1.2.10.2 yamt 170 1.2.10.2 yamt vm_offset_t msgbufphys; 171 1.2.10.2 yamt 172 1.2.10.2 yamt extern u_int data_abort_handler_address; 173 1.2.10.2 yamt extern u_int prefetch_abort_handler_address; 174 1.2.10.2 yamt extern u_int undefined_handler_address; 175 1.2.10.2 yamt 176 1.2.10.2 yamt #ifdef PMAP_DEBUG 177 1.2.10.2 yamt extern int pmap_debug_level; 178 1.2.10.2 yamt #endif 179 1.2.10.2 yamt 180 1.2.10.2 yamt #define KERNEL_PT_SYS 0 /* L2 table for mapping zero page */ 181 1.2.10.2 yamt 182 1.2.10.2 yamt #define KERNEL_PT_KERNEL 1 /* L2 table for mapping kernel */ 183 1.2.10.2 yamt #define KERNEL_PT_KERNEL_NUM 4 184 1.2.10.2 yamt 185 1.2.10.2 yamt /* L2 table for mapping i80321 */ 186 1.2.10.2 yamt #define KERNEL_PT_IOPXS (KERNEL_PT_KERNEL + KERNEL_PT_KERNEL_NUM) 187 1.2.10.2 yamt 188 1.2.10.2 yamt /* L2 tables for mapping kernel VM */ 189 1.2.10.2 yamt #define KERNEL_PT_VMDATA (KERNEL_PT_IOPXS + 1) 190 1.2.10.2 yamt #define KERNEL_PT_VMDATA_NUM 4 /* start with 16MB of KVM */ 191 1.2.10.2 yamt #define NUM_KERNEL_PTS (KERNEL_PT_VMDATA + KERNEL_PT_VMDATA_NUM) 192 1.2.10.2 yamt 193 1.2.10.2 yamt pv_addr_t kernel_pt_table[NUM_KERNEL_PTS]; 194 1.2.10.2 yamt 195 1.2.10.2 yamt struct user *proc0paddr; 196 1.2.10.2 yamt 197 1.2.10.2 yamt /* Prototypes */ 198 1.2.10.2 yamt void consinit(void); 199 1.2.10.2 yamt 200 1.2.10.2 yamt /* Static device mappings. */ 201 1.2.10.2 yamt static const struct pmap_devmap hdlg_devmap[] = { 202 1.2.10.2 yamt /* 203 1.2.10.2 yamt * Map the on-board devices VA == PA so that we can access them 204 1.2.10.2 yamt * with the MMU on or off. 205 1.2.10.2 yamt */ 206 1.2.10.2 yamt { 207 1.2.10.2 yamt HDLG_OBIO_BASE, 208 1.2.10.2 yamt HDLG_OBIO_BASE, 209 1.2.10.2 yamt HDLG_OBIO_SIZE, 210 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, 211 1.2.10.2 yamt PTE_NOCACHE, 212 1.2.10.2 yamt }, 213 1.2.10.2 yamt 214 1.2.10.2 yamt { 215 1.2.10.2 yamt HDLG_IOW_VBASE, 216 1.2.10.2 yamt VERDE_OUT_XLATE_IO_WIN0_BASE, 217 1.2.10.2 yamt VERDE_OUT_XLATE_IO_WIN_SIZE, 218 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, 219 1.2.10.2 yamt PTE_NOCACHE, 220 1.2.10.2 yamt }, 221 1.2.10.2 yamt 222 1.2.10.2 yamt { 223 1.2.10.2 yamt HDLG_80321_VBASE, 224 1.2.10.2 yamt VERDE_PMMR_BASE, 225 1.2.10.2 yamt VERDE_PMMR_SIZE, 226 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, 227 1.2.10.2 yamt PTE_NOCACHE, 228 1.2.10.2 yamt }, 229 1.2.10.2 yamt 230 1.2.10.2 yamt { 231 1.2.10.2 yamt 0, 232 1.2.10.2 yamt 0, 233 1.2.10.2 yamt 0, 234 1.2.10.2 yamt 0, 235 1.2.10.2 yamt 0, 236 1.2.10.2 yamt } 237 1.2.10.2 yamt }; 238 1.2.10.2 yamt 239 1.2.10.2 yamt static void 240 1.2.10.2 yamt hardclock_hook(void) 241 1.2.10.2 yamt { 242 1.2.10.2 yamt 243 1.2.10.2 yamt /* Nothing to do */ 244 1.2.10.2 yamt } 245 1.2.10.2 yamt 246 1.2.10.2 yamt /* 247 1.2.10.2 yamt * u_int initarm(...) 248 1.2.10.2 yamt * 249 1.2.10.2 yamt * Initial entry point on startup. This gets called before main() is 250 1.2.10.2 yamt * entered. 251 1.2.10.2 yamt * It should be responsible for setting up everything that must be 252 1.2.10.2 yamt * in place when main is called. 253 1.2.10.2 yamt * This includes 254 1.2.10.2 yamt * Taking a copy of the boot configuration structure. 255 1.2.10.2 yamt * Initialising the physical console so characters can be printed. 256 1.2.10.2 yamt * Setting up page tables for the kernel 257 1.2.10.2 yamt * Relocating the kernel to the bottom of physical memory 258 1.2.10.2 yamt */ 259 1.2.10.2 yamt u_int 260 1.2.10.2 yamt initarm(void *arg) 261 1.2.10.2 yamt { 262 1.2.10.2 yamt extern vaddr_t xscale_cache_clean_addr; 263 1.2.10.2 yamt #ifdef DIAGNOSTIC 264 1.2.10.2 yamt extern vsize_t xscale_minidata_clean_size; 265 1.2.10.2 yamt #endif 266 1.2.10.2 yamt int loop; 267 1.2.10.2 yamt int loop1; 268 1.2.10.2 yamt u_int l1pagetable; 269 1.2.10.2 yamt pv_addr_t kernel_l1pt; 270 1.2.10.2 yamt paddr_t memstart; 271 1.2.10.2 yamt psize_t memsize; 272 1.2.10.2 yamt 273 1.2.10.2 yamt /* Calibrate the delay loop. */ 274 1.2.10.2 yamt i80321_calibrate_delay(); 275 1.2.10.2 yamt i80321_hardclock_hook = hardclock_hook; 276 1.2.10.2 yamt 277 1.2.10.2 yamt /* 278 1.2.10.2 yamt * Since we map the on-board devices VA==PA, and the kernel 279 1.2.10.2 yamt * is running VA==PA, it's possible for us to initialize 280 1.2.10.2 yamt * the console now. 281 1.2.10.2 yamt */ 282 1.2.10.2 yamt consinit(); 283 1.2.10.2 yamt 284 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 285 1.2.10.2 yamt /* Talk to the user */ 286 1.2.10.3 yamt printf("\nNetBSD/evbarm (HDL-G) booting ...\n"); 287 1.2.10.2 yamt #endif 288 1.2.10.2 yamt 289 1.2.10.2 yamt /* 290 1.2.10.2 yamt * Heads up ... Setup the CPU / MMU / TLB functions 291 1.2.10.2 yamt */ 292 1.2.10.2 yamt if (set_cpufuncs()) 293 1.2.10.2 yamt panic("CPU not recognized!"); 294 1.2.10.2 yamt 295 1.2.10.2 yamt /* 296 1.2.10.2 yamt * We are currently running with the MMU enabled and the 297 1.2.10.2 yamt * entire address space mapped VA==PA, except for the 298 1.2.10.2 yamt * first 64M of RAM is also double-mapped at 0xc0000000. 299 1.2.10.2 yamt * There is an L1 page table at 0xa0004000. 300 1.2.10.2 yamt */ 301 1.2.10.2 yamt 302 1.2.10.2 yamt /* 303 1.2.10.2 yamt * Fetch the SDRAM start/size from the i80321 SDRAM configuration 304 1.2.10.2 yamt * registers. 305 1.2.10.2 yamt */ 306 1.2.10.2 yamt i80321_sdram_bounds(&obio_bs_tag, VERDE_PMMR_BASE + VERDE_MCU_BASE, 307 1.2.10.2 yamt &memstart, &memsize); 308 1.2.10.2 yamt 309 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 310 1.2.10.2 yamt printf("initarm: Configuring system ...\n"); 311 1.2.10.2 yamt #endif 312 1.2.10.2 yamt 313 1.2.10.2 yamt /* Fake bootconfig structure for the benefit of pmap.c */ 314 1.2.10.3 yamt /* XXX must make the memory description h/w independent */ 315 1.2.10.2 yamt bootconfig.dramblocks = 1; 316 1.2.10.2 yamt bootconfig.dram[0].address = memstart; 317 1.2.10.2 yamt bootconfig.dram[0].pages = memsize / PAGE_SIZE; 318 1.2.10.2 yamt 319 1.2.10.2 yamt /* 320 1.2.10.2 yamt * Set up the variables that define the availablilty of 321 1.2.10.2 yamt * physical memory. For now, we're going to set 322 1.2.10.2 yamt * physical_freestart to 0xa0200000 (where the kernel 323 1.2.10.2 yamt * was loaded), and allocate the memory we need downwards. 324 1.2.10.2 yamt * If we get too close to the L1 table that we set up, we 325 1.2.10.2 yamt * will panic. We will update physical_freestart and 326 1.2.10.2 yamt * physical_freeend later to reflect what pmap_bootstrap() 327 1.2.10.2 yamt * wants to see. 328 1.2.10.2 yamt * 329 1.2.10.2 yamt * XXX pmap_bootstrap() needs an enema. 330 1.2.10.2 yamt */ 331 1.2.10.2 yamt physical_start = bootconfig.dram[0].address; 332 1.2.10.2 yamt physical_end = physical_start + (bootconfig.dram[0].pages * PAGE_SIZE); 333 1.2.10.2 yamt 334 1.2.10.2 yamt physical_freestart = 0xa0009000UL; 335 1.2.10.2 yamt physical_freeend = 0xa0200000UL; 336 1.2.10.2 yamt 337 1.2.10.2 yamt physmem = (physical_end - physical_start) / PAGE_SIZE; 338 1.2.10.2 yamt 339 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 340 1.2.10.2 yamt /* Tell the user about the memory */ 341 1.2.10.2 yamt printf("physmemory: %d pages at 0x%08lx -> 0x%08lx\n", physmem, 342 1.2.10.2 yamt physical_start, physical_end - 1); 343 1.2.10.2 yamt #endif 344 1.2.10.2 yamt 345 1.2.10.2 yamt /* 346 1.2.10.2 yamt * Okay, the kernel starts 2MB in from the bottom of physical 347 1.2.10.2 yamt * memory. We are going to allocate our bootstrap pages downwards 348 1.2.10.2 yamt * from there. 349 1.2.10.2 yamt * 350 1.2.10.2 yamt * We need to allocate some fixed page tables to get the kernel 351 1.2.10.2 yamt * going. We allocate one page directory and a number of page 352 1.2.10.2 yamt * tables and store the physical addresses in the kernel_pt_table 353 1.2.10.2 yamt * array. 354 1.2.10.2 yamt * 355 1.2.10.2 yamt * The kernel page directory must be on a 16K boundary. The page 356 1.2.10.2 yamt * tables must be on 4K boundaries. What we do is allocate the 357 1.2.10.2 yamt * page directory on the first 16K boundary that we encounter, and 358 1.2.10.2 yamt * the page tables on 4K boundaries otherwise. Since we allocate 359 1.2.10.2 yamt * at least 3 L2 page tables, we are guaranteed to encounter at 360 1.2.10.2 yamt * least one 16K aligned region. 361 1.2.10.2 yamt */ 362 1.2.10.2 yamt 363 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 364 1.2.10.2 yamt printf("Allocating page tables\n"); 365 1.2.10.2 yamt #endif 366 1.2.10.2 yamt 367 1.2.10.2 yamt free_pages = (physical_freeend - physical_freestart) / PAGE_SIZE; 368 1.2.10.2 yamt 369 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 370 1.2.10.2 yamt printf("freestart = 0x%08lx, free_pages = %d (0x%08x)\n", 371 1.2.10.2 yamt physical_freestart, free_pages, free_pages); 372 1.2.10.2 yamt #endif 373 1.2.10.2 yamt 374 1.2.10.2 yamt /* Define a macro to simplify memory allocation */ 375 1.2.10.2 yamt #define valloc_pages(var, np) \ 376 1.2.10.2 yamt alloc_pages((var).pv_pa, (np)); \ 377 1.2.10.2 yamt (var).pv_va = KERNEL_BASE + (var).pv_pa - physical_start; 378 1.2.10.2 yamt 379 1.2.10.2 yamt #define alloc_pages(var, np) \ 380 1.2.10.2 yamt physical_freeend -= ((np) * PAGE_SIZE); \ 381 1.2.10.2 yamt if (physical_freeend < physical_freestart) \ 382 1.2.10.2 yamt panic("initarm: out of memory"); \ 383 1.2.10.2 yamt (var) = physical_freeend; \ 384 1.2.10.2 yamt free_pages -= (np); \ 385 1.2.10.2 yamt memset((char *)(var), 0, ((np) * PAGE_SIZE)); 386 1.2.10.2 yamt 387 1.2.10.2 yamt loop1 = 0; 388 1.2.10.2 yamt kernel_l1pt.pv_pa = 0; 389 1.2.10.2 yamt kernel_l1pt.pv_va = 0; 390 1.2.10.2 yamt for (loop = 0; loop <= NUM_KERNEL_PTS; ++loop) { 391 1.2.10.2 yamt /* Are we 16KB aligned for an L1 ? */ 392 1.2.10.2 yamt if (((physical_freeend - L1_TABLE_SIZE) & (L1_TABLE_SIZE - 1)) == 0 393 1.2.10.2 yamt && kernel_l1pt.pv_pa == 0) { 394 1.2.10.2 yamt valloc_pages(kernel_l1pt, L1_TABLE_SIZE / PAGE_SIZE); 395 1.2.10.2 yamt } else { 396 1.2.10.2 yamt valloc_pages(kernel_pt_table[loop1], 397 1.2.10.2 yamt L2_TABLE_SIZE / PAGE_SIZE); 398 1.2.10.2 yamt ++loop1; 399 1.2.10.2 yamt } 400 1.2.10.2 yamt } 401 1.2.10.2 yamt 402 1.2.10.2 yamt /* This should never be able to happen but better confirm that. */ 403 1.2.10.2 yamt if (!kernel_l1pt.pv_pa || (kernel_l1pt.pv_pa & (L1_TABLE_SIZE-1)) != 0) 404 1.2.10.2 yamt panic("initarm: Failed to align the kernel page directory"); 405 1.2.10.2 yamt 406 1.2.10.2 yamt /* 407 1.2.10.2 yamt * Allocate a page for the system page mapped to V0x00000000 408 1.2.10.2 yamt * This page will just contain the system vectors and can be 409 1.2.10.2 yamt * shared by all processes. 410 1.2.10.2 yamt */ 411 1.2.10.2 yamt alloc_pages(systempage.pv_pa, 1); 412 1.2.10.2 yamt 413 1.2.10.2 yamt /* Allocate stacks for all modes */ 414 1.2.10.2 yamt valloc_pages(irqstack, IRQ_STACK_SIZE); 415 1.2.10.2 yamt valloc_pages(abtstack, ABT_STACK_SIZE); 416 1.2.10.2 yamt valloc_pages(undstack, UND_STACK_SIZE); 417 1.2.10.2 yamt valloc_pages(kernelstack, UPAGES); 418 1.2.10.2 yamt 419 1.2.10.2 yamt /* Allocate enough pages for cleaning the Mini-Data cache. */ 420 1.2.10.2 yamt KASSERT(xscale_minidata_clean_size <= PAGE_SIZE); 421 1.2.10.2 yamt valloc_pages(minidataclean, 1); 422 1.2.10.2 yamt 423 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 424 1.2.10.2 yamt printf("IRQ stack: p0x%08lx v0x%08lx\n", irqstack.pv_pa, 425 1.2.10.2 yamt irqstack.pv_va); 426 1.2.10.2 yamt printf("ABT stack: p0x%08lx v0x%08lx\n", abtstack.pv_pa, 427 1.2.10.2 yamt abtstack.pv_va); 428 1.2.10.2 yamt printf("UND stack: p0x%08lx v0x%08lx\n", undstack.pv_pa, 429 1.2.10.2 yamt undstack.pv_va); 430 1.2.10.2 yamt printf("SVC stack: p0x%08lx v0x%08lx\n", kernelstack.pv_pa, 431 1.2.10.2 yamt kernelstack.pv_va); 432 1.2.10.2 yamt #endif 433 1.2.10.2 yamt 434 1.2.10.2 yamt /* 435 1.2.10.2 yamt * XXX Defer this to later so that we can reclaim the memory 436 1.2.10.2 yamt * XXX used by the RedBoot page tables. 437 1.2.10.2 yamt */ 438 1.2.10.2 yamt alloc_pages(msgbufphys, round_page(MSGBUFSIZE) / PAGE_SIZE); 439 1.2.10.2 yamt 440 1.2.10.2 yamt /* 441 1.2.10.2 yamt * Ok we have allocated physical pages for the primary kernel 442 1.2.10.2 yamt * page tables 443 1.2.10.2 yamt */ 444 1.2.10.2 yamt 445 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 446 1.2.10.2 yamt printf("Creating L1 page table at 0x%08lx\n", kernel_l1pt.pv_pa); 447 1.2.10.2 yamt #endif 448 1.2.10.2 yamt 449 1.2.10.2 yamt /* 450 1.2.10.2 yamt * Now we start construction of the L1 page table 451 1.2.10.2 yamt * We start by mapping the L2 page tables into the L1. 452 1.2.10.2 yamt * This means that we can replace L1 mappings later on if necessary 453 1.2.10.2 yamt */ 454 1.2.10.2 yamt l1pagetable = kernel_l1pt.pv_pa; 455 1.2.10.2 yamt 456 1.2.10.2 yamt /* Map the L2 pages tables in the L1 page table */ 457 1.2.10.2 yamt pmap_link_l2pt(l1pagetable, ARM_VECTORS_HIGH & ~(0x00400000 - 1), 458 1.2.10.2 yamt &kernel_pt_table[KERNEL_PT_SYS]); 459 1.2.10.2 yamt for (loop = 0; loop < KERNEL_PT_KERNEL_NUM; loop++) 460 1.2.10.2 yamt pmap_link_l2pt(l1pagetable, KERNEL_BASE + loop * 0x00400000, 461 1.2.10.2 yamt &kernel_pt_table[KERNEL_PT_KERNEL + loop]); 462 1.2.10.2 yamt pmap_link_l2pt(l1pagetable, HDLG_IOPXS_VBASE, 463 1.2.10.2 yamt &kernel_pt_table[KERNEL_PT_IOPXS]); 464 1.2.10.2 yamt for (loop = 0; loop < KERNEL_PT_VMDATA_NUM; loop++) 465 1.2.10.2 yamt pmap_link_l2pt(l1pagetable, KERNEL_VM_BASE + loop * 0x00400000, 466 1.2.10.2 yamt &kernel_pt_table[KERNEL_PT_VMDATA + loop]); 467 1.2.10.2 yamt 468 1.2.10.2 yamt /* update the top of the kernel VM */ 469 1.2.10.2 yamt pmap_curmaxkvaddr = 470 1.2.10.2 yamt KERNEL_VM_BASE + (KERNEL_PT_VMDATA_NUM * 0x00400000); 471 1.2.10.2 yamt 472 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 473 1.2.10.2 yamt printf("Mapping kernel\n"); 474 1.2.10.2 yamt #endif 475 1.2.10.2 yamt 476 1.2.10.2 yamt /* Now we fill in the L2 pagetable for the kernel static code/data */ 477 1.2.10.2 yamt { 478 1.2.10.2 yamt extern char etext[], _end[]; 479 1.2.10.2 yamt size_t textsize = (uintptr_t) etext - KERNEL_TEXT_BASE; 480 1.2.10.2 yamt size_t totalsize = (uintptr_t) _end - KERNEL_TEXT_BASE; 481 1.2.10.2 yamt u_int logical; 482 1.2.10.2 yamt 483 1.2.10.2 yamt textsize = (textsize + PGOFSET) & ~PGOFSET; 484 1.2.10.2 yamt totalsize = (totalsize + PGOFSET) & ~PGOFSET; 485 1.2.10.2 yamt 486 1.2.10.2 yamt logical = 0x00200000; /* offset of kernel in RAM */ 487 1.2.10.2 yamt 488 1.2.10.2 yamt logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 489 1.2.10.2 yamt physical_start + logical, textsize, 490 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 491 1.2.10.2 yamt logical += pmap_map_chunk(l1pagetable, KERNEL_BASE + logical, 492 1.2.10.2 yamt physical_start + logical, totalsize - textsize, 493 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 494 1.2.10.2 yamt } 495 1.2.10.2 yamt 496 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 497 1.2.10.2 yamt printf("Constructing L2 page tables\n"); 498 1.2.10.2 yamt #endif 499 1.2.10.2 yamt 500 1.2.10.2 yamt /* Map the stack pages */ 501 1.2.10.2 yamt pmap_map_chunk(l1pagetable, irqstack.pv_va, irqstack.pv_pa, 502 1.2.10.2 yamt IRQ_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 503 1.2.10.2 yamt pmap_map_chunk(l1pagetable, abtstack.pv_va, abtstack.pv_pa, 504 1.2.10.2 yamt ABT_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 505 1.2.10.2 yamt pmap_map_chunk(l1pagetable, undstack.pv_va, undstack.pv_pa, 506 1.2.10.2 yamt UND_STACK_SIZE * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 507 1.2.10.2 yamt pmap_map_chunk(l1pagetable, kernelstack.pv_va, kernelstack.pv_pa, 508 1.2.10.2 yamt UPAGES * PAGE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 509 1.2.10.2 yamt 510 1.2.10.2 yamt pmap_map_chunk(l1pagetable, kernel_l1pt.pv_va, kernel_l1pt.pv_pa, 511 1.2.10.2 yamt L1_TABLE_SIZE, VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 512 1.2.10.2 yamt 513 1.2.10.2 yamt for (loop = 0; loop < NUM_KERNEL_PTS; ++loop) { 514 1.2.10.2 yamt pmap_map_chunk(l1pagetable, kernel_pt_table[loop].pv_va, 515 1.2.10.2 yamt kernel_pt_table[loop].pv_pa, L2_TABLE_SIZE, 516 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, PTE_PAGETABLE); 517 1.2.10.2 yamt } 518 1.2.10.2 yamt 519 1.2.10.2 yamt /* Map the Mini-Data cache clean area. */ 520 1.2.10.2 yamt xscale_setup_minidata(l1pagetable, minidataclean.pv_va, 521 1.2.10.2 yamt minidataclean.pv_pa); 522 1.2.10.2 yamt 523 1.2.10.2 yamt /* Map the vector page. */ 524 1.2.10.2 yamt pmap_map_entry(l1pagetable, ARM_VECTORS_HIGH, systempage.pv_pa, 525 1.2.10.2 yamt VM_PROT_READ|VM_PROT_WRITE, PTE_CACHE); 526 1.2.10.2 yamt 527 1.2.10.2 yamt /* Map the statically mapped devices. */ 528 1.2.10.2 yamt pmap_devmap_bootstrap(l1pagetable, hdlg_devmap); 529 1.2.10.2 yamt 530 1.2.10.2 yamt /* 531 1.2.10.2 yamt * Give the XScale global cache clean code an appropriately 532 1.2.10.2 yamt * sized chunk of unmapped VA space starting at 0xff000000 533 1.2.10.2 yamt * (our device mappings end before this address). 534 1.2.10.2 yamt */ 535 1.2.10.2 yamt xscale_cache_clean_addr = 0xff000000U; 536 1.2.10.2 yamt 537 1.2.10.2 yamt /* 538 1.2.10.2 yamt * Now we have the real page tables in place so we can switch to them. 539 1.2.10.2 yamt * Once this is done we will be running with the REAL kernel page 540 1.2.10.2 yamt * tables. 541 1.2.10.2 yamt */ 542 1.2.10.2 yamt 543 1.2.10.2 yamt /* 544 1.2.10.2 yamt * Update the physical_freestart/physical_freeend/free_pages 545 1.2.10.2 yamt * variables. 546 1.2.10.2 yamt */ 547 1.2.10.2 yamt { 548 1.2.10.2 yamt extern char _end[]; 549 1.2.10.2 yamt 550 1.2.10.2 yamt physical_freestart = physical_start + 551 1.2.10.2 yamt (((((uintptr_t) _end) + PGOFSET) & ~PGOFSET) - 552 1.2.10.2 yamt KERNEL_BASE); 553 1.2.10.2 yamt physical_freeend = physical_end; 554 1.2.10.2 yamt free_pages = 555 1.2.10.2 yamt (physical_freeend - physical_freestart) / PAGE_SIZE; 556 1.2.10.2 yamt } 557 1.2.10.2 yamt 558 1.2.10.2 yamt /* Switch tables */ 559 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 560 1.2.10.2 yamt printf("freestart = 0x%08lx, free_pages = %d (0x%x)\n", 561 1.2.10.2 yamt physical_freestart, free_pages, free_pages); 562 1.2.10.2 yamt printf("switching to new L1 page table @%#lx...", kernel_l1pt.pv_pa); 563 1.2.10.2 yamt #endif 564 1.2.10.2 yamt cpu_domains((DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)) | DOMAIN_CLIENT); 565 1.2.10.2 yamt setttb(kernel_l1pt.pv_pa); 566 1.2.10.2 yamt cpu_tlb_flushID(); 567 1.2.10.2 yamt cpu_domains(DOMAIN_CLIENT << (PMAP_DOMAIN_KERNEL*2)); 568 1.2.10.2 yamt 569 1.2.10.2 yamt /* 570 1.2.10.2 yamt * Moved from cpu_startup() as data_abort_handler() references 571 1.2.10.2 yamt * this during uvm init 572 1.2.10.2 yamt */ 573 1.2.10.2 yamt proc0paddr = (struct user *)kernelstack.pv_va; 574 1.2.10.2 yamt lwp0.l_addr = proc0paddr; 575 1.2.10.2 yamt 576 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 577 1.2.10.2 yamt printf("done!\n"); 578 1.2.10.2 yamt #endif 579 1.2.10.2 yamt 580 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 581 1.2.10.2 yamt printf("bootstrap done.\n"); 582 1.2.10.2 yamt #endif 583 1.2.10.2 yamt 584 1.2.10.2 yamt arm32_vector_init(ARM_VECTORS_HIGH, ARM_VEC_ALL); 585 1.2.10.2 yamt 586 1.2.10.2 yamt /* 587 1.2.10.2 yamt * Pages were allocated during the secondary bootstrap for the 588 1.2.10.2 yamt * stacks for different CPU modes. 589 1.2.10.2 yamt * We must now set the r13 registers in the different CPU modes to 590 1.2.10.2 yamt * point to these stacks. 591 1.2.10.2 yamt * Since the ARM stacks use STMFD etc. we must set r13 to the top end 592 1.2.10.2 yamt * of the stack memory. 593 1.2.10.2 yamt */ 594 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 595 1.2.10.2 yamt printf("init subsystems: stacks "); 596 1.2.10.2 yamt #endif 597 1.2.10.2 yamt 598 1.2.10.2 yamt set_stackptr(PSR_IRQ32_MODE, 599 1.2.10.2 yamt irqstack.pv_va + IRQ_STACK_SIZE * PAGE_SIZE); 600 1.2.10.2 yamt set_stackptr(PSR_ABT32_MODE, 601 1.2.10.2 yamt abtstack.pv_va + ABT_STACK_SIZE * PAGE_SIZE); 602 1.2.10.2 yamt set_stackptr(PSR_UND32_MODE, 603 1.2.10.2 yamt undstack.pv_va + UND_STACK_SIZE * PAGE_SIZE); 604 1.2.10.2 yamt 605 1.2.10.2 yamt /* 606 1.2.10.2 yamt * Well we should set a data abort handler. 607 1.2.10.2 yamt * Once things get going this will change as we will need a proper 608 1.2.10.2 yamt * handler. 609 1.2.10.2 yamt * Until then we will use a handler that just panics but tells us 610 1.2.10.2 yamt * why. 611 1.2.10.2 yamt * Initialisation of the vectors will just panic on a data abort. 612 1.2.10.2 yamt * This just fills in a slightly better one. 613 1.2.10.2 yamt */ 614 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 615 1.2.10.2 yamt printf("vectors "); 616 1.2.10.2 yamt #endif 617 1.2.10.2 yamt data_abort_handler_address = (u_int)data_abort_handler; 618 1.2.10.2 yamt prefetch_abort_handler_address = (u_int)prefetch_abort_handler; 619 1.2.10.2 yamt undefined_handler_address = (u_int)undefinedinstruction_bounce; 620 1.2.10.2 yamt 621 1.2.10.2 yamt /* Initialise the undefined instruction handlers */ 622 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 623 1.2.10.2 yamt printf("undefined "); 624 1.2.10.2 yamt #endif 625 1.2.10.2 yamt undefined_init(); 626 1.2.10.2 yamt 627 1.2.10.2 yamt /* Load memory into UVM. */ 628 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 629 1.2.10.2 yamt printf("page "); 630 1.2.10.2 yamt #endif 631 1.2.10.2 yamt uvm_setpagesize(); /* initialize PAGE_SIZE-dependent variables */ 632 1.2.10.2 yamt uvm_page_physload(atop(physical_freestart), atop(physical_freeend), 633 1.2.10.2 yamt atop(physical_freestart), atop(physical_freeend), 634 1.2.10.2 yamt VM_FREELIST_DEFAULT); 635 1.2.10.2 yamt 636 1.2.10.2 yamt /* Boot strap pmap telling it where the kernel page table is */ 637 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 638 1.2.10.2 yamt printf("pmap "); 639 1.2.10.2 yamt #endif 640 1.2.10.2 yamt pmap_bootstrap((pd_entry_t *)kernel_l1pt.pv_va, KERNEL_VM_BASE, 641 1.2.10.2 yamt KERNEL_VM_BASE + KERNEL_VM_SIZE); 642 1.2.10.2 yamt 643 1.2.10.2 yamt /* Setup the IRQ system */ 644 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 645 1.2.10.2 yamt printf("irq "); 646 1.2.10.2 yamt #endif 647 1.2.10.2 yamt i80321_intr_init(); 648 1.2.10.2 yamt 649 1.2.10.2 yamt #ifdef VERBOSE_INIT_ARM 650 1.2.10.2 yamt printf("done.\n"); 651 1.2.10.2 yamt #endif 652 1.2.10.2 yamt 653 1.2.10.2 yamt #ifdef BOOTHOWTO 654 1.2.10.2 yamt boothowto = BOOTHOWTO; 655 1.2.10.2 yamt #endif 656 1.2.10.2 yamt 657 1.2.10.2 yamt #if NKSYMS || defined(DDB) || defined(LKM) 658 1.2.10.2 yamt /* Firmware doesn't load symbols. */ 659 1.2.10.2 yamt ksyms_init(0, NULL, NULL); 660 1.2.10.2 yamt #endif 661 1.2.10.2 yamt 662 1.2.10.2 yamt #ifdef DDB 663 1.2.10.2 yamt db_machine_init(); 664 1.2.10.2 yamt if (boothowto & RB_KDB) 665 1.2.10.2 yamt Debugger(); 666 1.2.10.2 yamt #endif 667 1.2.10.2 yamt 668 1.2.10.2 yamt /* We return the new stack pointer address */ 669 1.2.10.2 yamt return (kernelstack.pv_va + USPACE_SVC_STACK_TOP); 670 1.2.10.2 yamt } 671 1.2.10.2 yamt 672 1.2.10.2 yamt /* 673 1.2.10.2 yamt * void cpu_reboot(int howto, char *bootstr) 674 1.2.10.2 yamt * 675 1.2.10.2 yamt * Reboots the system 676 1.2.10.2 yamt * 677 1.2.10.2 yamt * Deal with any syncing, unmounting, dumping and shutdown hooks, 678 1.2.10.2 yamt * then reset the CPU. 679 1.2.10.2 yamt */ 680 1.2.10.2 yamt void 681 1.2.10.2 yamt cpu_reboot(int howto, char *bootstr) 682 1.2.10.2 yamt { 683 1.2.10.2 yamt 684 1.2.10.2 yamt /* 685 1.2.10.2 yamt * If we are still cold then hit the air brakes 686 1.2.10.2 yamt * and crash to earth fast 687 1.2.10.2 yamt */ 688 1.2.10.2 yamt if (cold) { 689 1.2.10.2 yamt *(volatile uint8_t *)HDLG_LEDCTRL |= LEDCTRL_STAT_RED; 690 1.2.10.2 yamt howto |= RB_HALT; 691 1.2.10.2 yamt goto haltsys; 692 1.2.10.2 yamt } 693 1.2.10.2 yamt 694 1.2.10.2 yamt /* Disable console buffering */ 695 1.2.10.2 yamt 696 1.2.10.2 yamt /* 697 1.2.10.2 yamt * If RB_NOSYNC was not specified sync the discs. 698 1.2.10.2 yamt * Note: Unless cold is set to 1 here, syslogd will die during the 699 1.2.10.2 yamt * unmount. It looks like syslogd is getting woken up only to find 700 1.2.10.2 yamt * that it cannot page part of the binary in as the filesystem has 701 1.2.10.2 yamt * been unmounted. 702 1.2.10.2 yamt */ 703 1.2.10.2 yamt if ((howto & RB_NOSYNC) == 0) { 704 1.2.10.2 yamt bootsync(); 705 1.2.10.2 yamt /*resettodr();*/ 706 1.2.10.2 yamt } 707 1.2.10.2 yamt 708 1.2.10.2 yamt /* wait 1s */ 709 1.2.10.2 yamt delay(1 * 1000 * 1000); 710 1.2.10.2 yamt 711 1.2.10.2 yamt /* Say NO to interrupts */ 712 1.2.10.2 yamt splhigh(); 713 1.2.10.2 yamt 714 1.2.10.2 yamt /* Do a dump if requested. */ 715 1.2.10.2 yamt if ((howto & (RB_DUMP | RB_HALT)) == RB_DUMP) { 716 1.2.10.2 yamt dumpsys(); 717 1.2.10.2 yamt } 718 1.2.10.2 yamt 719 1.2.10.2 yamt haltsys: 720 1.2.10.2 yamt /* Run any shutdown hooks */ 721 1.2.10.2 yamt doshutdownhooks(); 722 1.2.10.2 yamt 723 1.2.10.2 yamt /* Make sure IRQ's are disabled */ 724 1.2.10.2 yamt IRQdisable; 725 1.2.10.2 yamt 726 1.2.10.2 yamt if (howto & RB_HALT) { 727 1.2.10.2 yamt *(volatile uint8_t *)HDLG_PWRMNG = PWRMNG_POWOFF; 728 1.2.10.2 yamt delay(3 * 1000 * 1000); /* wait 3s */ 729 1.2.10.2 yamt 730 1.2.10.2 yamt printf("SHUTDOWN FAILED!\n"); 731 1.2.10.2 yamt printf("The operating system has halted.\n"); 732 1.2.10.2 yamt printf("Please press any key to reboot.\n\n"); 733 1.2.10.2 yamt cngetc(); 734 1.2.10.2 yamt } 735 1.2.10.2 yamt 736 1.2.10.2 yamt printf("rebooting...\n\r"); 737 1.2.10.2 yamt 738 1.2.10.2 yamt (void)disable_interrupts(I32_bit|F32_bit); 739 1.2.10.2 yamt cpu_idcache_wbinv_all(); 740 1.2.10.2 yamt cpu_drain_writebuf(); 741 1.2.10.2 yamt 742 1.2.10.2 yamt *(volatile uint8_t *)HDLG_PWRMNG = PWRMNG_RESET; 743 1.2.10.2 yamt delay(1 * 1000 * 1000); /* wait 1s */ 744 1.2.10.2 yamt 745 1.2.10.2 yamt /* ...and if that didn't work, just croak. */ 746 1.2.10.2 yamt printf("RESET FAILED!\n"); 747 1.2.10.2 yamt for (;;) { 748 1.2.10.2 yamt continue; 749 1.2.10.2 yamt } 750 1.2.10.2 yamt } 751 1.2.10.2 yamt 752 1.2.10.2 yamt /* 753 1.2.10.2 yamt * console 754 1.2.10.2 yamt */ 755 1.2.10.2 yamt #include "com.h" 756 1.2.10.2 yamt #if NCOM > 0 757 1.2.10.2 yamt #include <dev/ic/comreg.h> 758 1.2.10.2 yamt #include <dev/ic/comvar.h> 759 1.2.10.2 yamt #endif 760 1.2.10.2 yamt 761 1.2.10.2 yamt /* 762 1.2.10.2 yamt * Define the default console speed for the board. This is generally 763 1.2.10.2 yamt * what the firmware provided with the board defaults to. 764 1.2.10.2 yamt */ 765 1.2.10.2 yamt #ifndef CONSPEED 766 1.2.10.2 yamt #define CONSPEED B115200 767 1.2.10.2 yamt #endif /* ! CONSPEED */ 768 1.2.10.2 yamt 769 1.2.10.2 yamt #ifndef CONUNIT 770 1.2.10.2 yamt #define CONUNIT 0 771 1.2.10.2 yamt #endif 772 1.2.10.2 yamt 773 1.2.10.2 yamt #ifndef CONMODE 774 1.2.10.2 yamt #define CONMODE ((TTYDEF_CFLAG & ~(CSIZE | CSTOPB | PARENB)) | CS8) /* 8N1 */ 775 1.2.10.2 yamt #endif 776 1.2.10.2 yamt 777 1.2.10.2 yamt int comcnspeed = CONSPEED; 778 1.2.10.2 yamt int comcnmode = CONMODE; 779 1.2.10.2 yamt int comcnunit = CONUNIT; 780 1.2.10.2 yamt 781 1.2.10.2 yamt #if KGDB 782 1.2.10.2 yamt #ifndef KGDB_DEVNAME 783 1.2.10.2 yamt #error Must define KGDB_DEVNAME 784 1.2.10.2 yamt #endif 785 1.2.10.2 yamt const char kgdb_devname[] = KGDB_DEVNAME; 786 1.2.10.2 yamt 787 1.2.10.2 yamt #ifndef KGDB_DEVADDR 788 1.2.10.2 yamt #error Must define KGDB_DEVADDR 789 1.2.10.2 yamt #endif 790 1.2.10.2 yamt unsigned long kgdb_devaddr = KGDB_DEVADDR; 791 1.2.10.2 yamt 792 1.2.10.2 yamt #ifndef KGDB_DEVRATE 793 1.2.10.2 yamt #define KGDB_DEVRATE CONSPEED 794 1.2.10.2 yamt #endif 795 1.2.10.2 yamt int kgdb_devrate = KGDB_DEVRATE; 796 1.2.10.2 yamt 797 1.2.10.2 yamt #ifndef KGDB_DEVMODE 798 1.2.10.2 yamt #define KGDB_DEVMODE CONMODE 799 1.2.10.2 yamt #endif 800 1.2.10.2 yamt int kgdb_devmode = KGDB_DEVMODE; 801 1.2.10.2 yamt #endif /* KGDB */ 802 1.2.10.2 yamt 803 1.2.10.2 yamt void 804 1.2.10.2 yamt consinit(void) 805 1.2.10.2 yamt { 806 1.2.10.2 yamt static const bus_addr_t comcnaddrs[] = { 807 1.2.10.2 yamt HDLG_UART1, /* com0 */ 808 1.2.10.2 yamt }; 809 1.2.10.2 yamt static int consinit_called; 810 1.2.10.2 yamt 811 1.2.10.2 yamt if (consinit_called) 812 1.2.10.2 yamt return; 813 1.2.10.2 yamt consinit_called = 1; 814 1.2.10.2 yamt 815 1.2.10.2 yamt /* 816 1.2.10.2 yamt * Console devices are mapped VA==PA. Our devmap reflects 817 1.2.10.2 yamt * this, so register it now so drivers can map the console 818 1.2.10.2 yamt * device. 819 1.2.10.2 yamt */ 820 1.2.10.2 yamt pmap_devmap_register(hdlg_devmap); 821 1.2.10.2 yamt 822 1.2.10.2 yamt #if NCOM > 0 823 1.2.10.2 yamt if (comcnattach(&obio_bs_tag, comcnaddrs[comcnunit], comcnspeed, 824 1.2.10.2 yamt COM_FREQ, COM_TYPE_NORMAL, comcnmode)) 825 1.2.10.2 yamt panic("can't init serial console @%lx", comcnaddrs[comcnunit]); 826 1.2.10.2 yamt #else 827 1.2.10.2 yamt panic("serial console @%lx not configured", comcnaddrs[comcnunit]); 828 1.2.10.2 yamt #endif 829 1.2.10.2 yamt #if KGDB 830 1.2.10.2 yamt #if NCOM > 0 831 1.2.10.2 yamt if (strcmp(kgdb_devname, "com") == 0) { 832 1.2.10.2 yamt com_kgdb_attach(&obio_bs_tag, kgdb_devaddr, kgdb_devrate, 833 1.2.10.2 yamt COM_FREQ, COM_TYPE_NORMAL, kgdb_devmode); 834 1.2.10.2 yamt } 835 1.2.10.2 yamt #endif /* NCOM > 0 */ 836 1.2.10.2 yamt #endif /* KGDB */ 837 1.2.10.2 yamt } 838
Indexes created Wed Oct 01 19:09:53 GMT 2025