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machdep.c revision 1.4.2.3
      1  1.4.2.3  martin /* $NetBSD: machdep.c,v 1.4.2.3 2024/10/14 16:44:42 martin Exp $ */
      2  1.4.2.2  martin 
      3  1.4.2.2  martin /*
      4  1.4.2.2  martin  * Copyright (c) 2002, 2024 The NetBSD Foundation, Inc.
      5  1.4.2.2  martin  * All rights reserved.
      6  1.4.2.2  martin  *
      7  1.4.2.2  martin  * This code is derived from software contributed to The NetBSD Foundation
      8  1.4.2.2  martin  * by Lennart Augustsson (lennart (at) augustsson.net) at Sandburst Corp.
      9  1.4.2.2  martin  *
     10  1.4.2.2  martin  * Redistribution and use in source and binary forms, with or without
     11  1.4.2.2  martin  * modification, are permitted provided that the following conditions
     12  1.4.2.2  martin  * are met:
     13  1.4.2.2  martin  * 1. Redistributions of source code must retain the above copyright
     14  1.4.2.2  martin  *    notice, this list of conditions and the following disclaimer.
     15  1.4.2.2  martin  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.4.2.2  martin  *    notice, this list of conditions and the following disclaimer in the
     17  1.4.2.2  martin  *    documentation and/or other materials provided with the distribution.
     18  1.4.2.2  martin  *
     19  1.4.2.2  martin  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.4.2.2  martin  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.4.2.2  martin  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.4.2.2  martin  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.4.2.2  martin  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.4.2.2  martin  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.4.2.2  martin  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.4.2.2  martin  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.4.2.2  martin  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.4.2.2  martin  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.4.2.2  martin  * POSSIBILITY OF SUCH DAMAGE.
     30  1.4.2.2  martin  */
     31  1.4.2.2  martin 
     32  1.4.2.2  martin /*
     33  1.4.2.2  martin  * Copyright (C) 1995, 1996 Wolfgang Solfrank.
     34  1.4.2.2  martin  * Copyright (C) 1995, 1996 TooLs GmbH.
     35  1.4.2.2  martin  * All rights reserved.
     36  1.4.2.2  martin  *
     37  1.4.2.2  martin  * Redistribution and use in source and binary forms, with or without
     38  1.4.2.2  martin  * modification, are permitted provided that the following conditions
     39  1.4.2.2  martin  * are met:
     40  1.4.2.2  martin  * 1. Redistributions of source code must retain the above copyright
     41  1.4.2.2  martin  *    notice, this list of conditions and the following disclaimer.
     42  1.4.2.2  martin  * 2. Redistributions in binary form must reproduce the above copyright
     43  1.4.2.2  martin  *    notice, this list of conditions and the following disclaimer in the
     44  1.4.2.2  martin  *    documentation and/or other materials provided with the distribution.
     45  1.4.2.2  martin  * 3. All advertising materials mentioning features or use of this software
     46  1.4.2.2  martin  *    must display the following acknowledgement:
     47  1.4.2.2  martin  *	This product includes software developed by TooLs GmbH.
     48  1.4.2.2  martin  * 4. The name of TooLs GmbH may not be used to endorse or promote products
     49  1.4.2.2  martin  *    derived from this software without specific prior written permission.
     50  1.4.2.2  martin  *
     51  1.4.2.2  martin  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
     52  1.4.2.2  martin  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     53  1.4.2.2  martin  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     54  1.4.2.2  martin  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     55  1.4.2.2  martin  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     56  1.4.2.2  martin  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
     57  1.4.2.2  martin  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
     58  1.4.2.2  martin  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     59  1.4.2.2  martin  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
     60  1.4.2.2  martin  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     61  1.4.2.2  martin  */
     62  1.4.2.2  martin 
     63  1.4.2.2  martin #define _POWERPC_BUS_DMA_PRIVATE
     64  1.4.2.2  martin 
     65  1.4.2.2  martin #include <sys/cdefs.h>
     66  1.4.2.3  martin __KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.4.2.3 2024/10/14 16:44:42 martin Exp $");
     67  1.4.2.2  martin 
     68  1.4.2.2  martin #include "opt_compat_netbsd.h"
     69  1.4.2.2  martin #include "opt_ddb.h"
     70  1.4.2.2  martin #include "opt_ddbparam.h"
     71  1.4.2.2  martin #include "opt_inet.h"
     72  1.4.2.2  martin #include "opt_ns.h"
     73  1.4.2.2  martin #include "opt_oea.h"
     74  1.4.2.2  martin 
     75  1.4.2.2  martin #include <sys/param.h>
     76  1.4.2.2  martin #include <sys/buf.h>
     77  1.4.2.2  martin #include <sys/bus.h>
     78  1.4.2.2  martin #include <sys/conf.h>
     79  1.4.2.2  martin #include <sys/device.h>
     80  1.4.2.2  martin #include <sys/exec.h>
     81  1.4.2.2  martin #include <sys/extent.h>
     82  1.4.2.2  martin #include <sys/intr.h>
     83  1.4.2.2  martin #include <sys/kernel.h>
     84  1.4.2.2  martin #include <sys/kgdb.h>
     85  1.4.2.2  martin #include <sys/ksyms.h>
     86  1.4.2.2  martin #include <sys/mbuf.h>
     87  1.4.2.2  martin #include <sys/mount.h>
     88  1.4.2.2  martin #include <sys/msgbuf.h>
     89  1.4.2.2  martin #include <sys/proc.h>
     90  1.4.2.2  martin #include <sys/reboot.h>
     91  1.4.2.2  martin #include <sys/syscallargs.h>
     92  1.4.2.2  martin #include <sys/sysctl.h>
     93  1.4.2.2  martin #include <sys/syslog.h>
     94  1.4.2.2  martin #include <sys/systm.h>
     95  1.4.2.2  martin 
     96  1.4.2.2  martin #include <uvm/uvm_extern.h>
     97  1.4.2.2  martin 
     98  1.4.2.2  martin #include <machine/powerpc.h>
     99  1.4.2.2  martin #include <machine/wii.h>
    100  1.4.2.2  martin 
    101  1.4.2.2  martin #include <powerpc/bus_funcs.h>
    102  1.4.2.2  martin #include <powerpc/db_machdep.h>
    103  1.4.2.2  martin #include <powerpc/pio.h>
    104  1.4.2.2  martin #include <powerpc/pmap.h>
    105  1.4.2.2  martin #include <powerpc/spr.h>
    106  1.4.2.2  martin #include <powerpc/trap.h>
    107  1.4.2.2  martin 
    108  1.4.2.2  martin #include <powerpc/oea/bat.h>
    109  1.4.2.2  martin #include <powerpc/oea/spr.h>
    110  1.4.2.2  martin #include <powerpc/pic/picvar.h>
    111  1.4.2.2  martin 
    112  1.4.2.2  martin #include <ddb/db_extern.h>
    113  1.4.2.2  martin 
    114  1.4.2.2  martin #include <dev/wscons/wsconsio.h>
    115  1.4.2.2  martin #include <dev/wscons/wsdisplayvar.h>
    116  1.4.2.2  martin #include <dev/rasops/rasops.h>
    117  1.4.2.2  martin #include <dev/wsfont/wsfont.h>
    118  1.4.2.2  martin #include <dev/wscons/wsdisplay_vconsvar.h>
    119  1.4.2.2  martin 
    120  1.4.2.2  martin #include <dev/usb/ukbdvar.h>
    121  1.4.2.2  martin 
    122  1.4.2.2  martin #include "ksyms.h"
    123  1.4.2.2  martin #include "ukbd.h"
    124  1.4.2.2  martin 
    125  1.4.2.3  martin #ifndef WII_DEFAULT_CMDLINE
    126  1.4.2.3  martin #define WII_DEFAULT_CMDLINE "root=ld0a"
    127  1.4.2.3  martin #endif
    128  1.4.2.3  martin 
    129  1.4.2.2  martin #define IBM750CL_SPR_HID4	1011
    130  1.4.2.2  martin #define	 L2_CCFI		0x00100000	/* L2 complete castout prior
    131  1.4.2.2  martin 						 * to L2 flash invalidate.
    132  1.4.2.2  martin 						 */
    133  1.4.2.2  martin 
    134  1.4.2.3  martin #define MINI_MEM2_START		0x13f00000	/* Start of reserved MEM2 for MINI */
    135  1.4.2.3  martin 
    136  1.4.2.2  martin extern u_int l2cr_config;
    137  1.4.2.2  martin 
    138  1.4.2.2  martin struct powerpc_bus_space wii_mem_tag = {
    139  1.4.2.2  martin 	.pbs_flags = _BUS_SPACE_BIG_ENDIAN |
    140  1.4.2.2  martin 		     _BUS_SPACE_MEM_TYPE,
    141  1.4.2.2  martin 	.pbs_offset = 0,
    142  1.4.2.2  martin 	.pbs_base = 0x0c000000,
    143  1.4.2.2  martin 	.pbs_limit = 0x0dffffff,
    144  1.4.2.2  martin 	.pbs_extent = NULL,
    145  1.4.2.2  martin };
    146  1.4.2.2  martin 
    147  1.4.2.2  martin static char ex_storage[1][EXTENT_FIXED_STORAGE_SIZE(EXTMAP_RANGES)]
    148  1.4.2.2  martin     __attribute__((aligned(8)));
    149  1.4.2.2  martin 
    150  1.4.2.2  martin static bus_addr_t
    151  1.4.2.2  martin wii_dma_phys_to_bus_mem(bus_dma_tag_t t, bus_addr_t addr)
    152  1.4.2.2  martin {
    153  1.4.2.2  martin 	return addr;
    154  1.4.2.2  martin }
    155  1.4.2.2  martin 
    156  1.4.2.2  martin static bus_addr_t
    157  1.4.2.2  martin wii_dma_bus_mem_to_phys(bus_dma_tag_t t, bus_addr_t addr)
    158  1.4.2.2  martin {
    159  1.4.2.2  martin 	return addr;
    160  1.4.2.2  martin }
    161  1.4.2.2  martin 
    162  1.4.2.2  martin static int
    163  1.4.2.2  martin wii_mem2_dmamem_alloc(bus_dma_tag_t t, bus_size_t size, bus_size_t alignment,
    164  1.4.2.2  martin     bus_size_t boundary, bus_dma_segment_t *segs, int nsegs, int *rsegs,
    165  1.4.2.2  martin     int flags)
    166  1.4.2.2  martin {
    167  1.4.2.2  martin 	struct mem_region *mem, *avail;
    168  1.4.2.2  martin 
    169  1.4.2.2  martin 	/* Restrict memory used for DMA to ranges in MEM2 */
    170  1.4.2.2  martin 	mem_regions(&mem, &avail);
    171  1.4.2.2  martin 	if (mem[1].size == 0) {
    172  1.4.2.2  martin 		return ENOMEM;
    173  1.4.2.2  martin 	}
    174  1.4.2.2  martin 
    175  1.4.2.2  martin 	return _bus_dmamem_alloc_range(t, size, alignment, boundary, segs,
    176  1.4.2.2  martin 	    nsegs, rsegs, flags, mem[1].start,
    177  1.4.2.2  martin 	    mem[1].start + mem[1].size - PAGE_SIZE - 1);
    178  1.4.2.2  martin }
    179  1.4.2.2  martin 
    180  1.4.2.2  martin struct powerpc_bus_dma_tag wii_bus_dma_tag = {
    181  1.4.2.2  martin 	0,				/* _bounce_thresh */
    182  1.4.2.2  martin 	_bus_dmamap_create,
    183  1.4.2.2  martin 	_bus_dmamap_destroy,
    184  1.4.2.2  martin 	_bus_dmamap_load,
    185  1.4.2.2  martin 	_bus_dmamap_load_mbuf,
    186  1.4.2.2  martin 	_bus_dmamap_load_uio,
    187  1.4.2.2  martin 	_bus_dmamap_load_raw,
    188  1.4.2.2  martin 	_bus_dmamap_unload,
    189  1.4.2.2  martin 	_bus_dmamap_sync,
    190  1.4.2.2  martin 	_bus_dmamem_alloc,
    191  1.4.2.2  martin 	_bus_dmamem_free,
    192  1.4.2.2  martin 	_bus_dmamem_map,
    193  1.4.2.2  martin 	_bus_dmamem_unmap,
    194  1.4.2.2  martin 	_bus_dmamem_mmap,
    195  1.4.2.2  martin 	wii_dma_phys_to_bus_mem,
    196  1.4.2.2  martin 	wii_dma_bus_mem_to_phys,
    197  1.4.2.2  martin };
    198  1.4.2.2  martin 
    199  1.4.2.2  martin struct powerpc_bus_dma_tag wii_mem2_bus_dma_tag = {
    200  1.4.2.2  martin 	0,				/* _bounce_thresh */
    201  1.4.2.2  martin 	_bus_dmamap_create,
    202  1.4.2.2  martin 	_bus_dmamap_destroy,
    203  1.4.2.2  martin 	_bus_dmamap_load,
    204  1.4.2.2  martin 	_bus_dmamap_load_mbuf,
    205  1.4.2.2  martin 	_bus_dmamap_load_uio,
    206  1.4.2.2  martin 	_bus_dmamap_load_raw,
    207  1.4.2.2  martin 	_bus_dmamap_unload,
    208  1.4.2.2  martin 	_bus_dmamap_sync,
    209  1.4.2.2  martin 	wii_mem2_dmamem_alloc,
    210  1.4.2.2  martin 	_bus_dmamem_free,
    211  1.4.2.2  martin 	_bus_dmamem_map,
    212  1.4.2.2  martin 	_bus_dmamem_unmap,
    213  1.4.2.2  martin 	_bus_dmamem_mmap,
    214  1.4.2.2  martin 	wii_dma_phys_to_bus_mem,
    215  1.4.2.2  martin 	wii_dma_bus_mem_to_phys,
    216  1.4.2.2  martin };
    217  1.4.2.2  martin 
    218  1.4.2.2  martin 
    219  1.4.2.2  martin /*
    220  1.4.2.2  martin  * Global variables used here and there
    221  1.4.2.2  martin  */
    222  1.4.2.2  martin struct mem_region physmemr[3], availmemr[3];
    223  1.4.2.2  martin char wii_cmdline[1024];
    224  1.4.2.2  martin 
    225  1.4.2.2  martin void initppc(u_int, u_int, u_int, void *); /* Called from locore */
    226  1.4.2.2  martin void wii_dolphin_elf_loader_id(void);
    227  1.4.2.2  martin 
    228  1.4.2.2  martin static void wii_setup(void);
    229  1.4.2.2  martin static void init_decrementer(void);
    230  1.4.2.2  martin 
    231  1.4.2.2  martin void
    232  1.4.2.2  martin initppc(u_int startkernel, u_int endkernel, u_int args, void *btinfo)
    233  1.4.2.2  martin {
    234  1.4.2.2  martin 	extern u_long ticks_per_sec;
    235  1.4.2.2  martin 	extern unsigned char edata[], end[];
    236  1.4.2.2  martin 	extern struct wii_argv wii_argv;
    237  1.4.2.3  martin 	uint32_t mem2_start, mem2_end;
    238  1.4.2.2  martin 	register_t scratch;
    239  1.4.2.2  martin 
    240  1.4.2.2  martin 	memset(&edata, 0, end - edata); /* clear BSS */
    241  1.4.2.2  martin 
    242  1.4.2.3  martin 	wii_cmdline[0] = '\0';
    243  1.4.2.2  martin 	if (wii_argv.magic == WII_ARGV_MAGIC) {
    244  1.4.2.2  martin 		void *ptr = (void *)(uintptr_t)(wii_argv.cmdline & ~0x80000000);
    245  1.4.2.2  martin 		if (ptr != NULL) {
    246  1.4.2.2  martin 			memcpy(wii_cmdline, ptr, wii_argv.length);
    247  1.4.2.2  martin 		}
    248  1.4.2.3  martin 	} else {
    249  1.4.2.3  martin 		snprintf(wii_cmdline, sizeof(wii_cmdline), WII_DEFAULT_CMDLINE);
    250  1.4.2.2  martin 	}
    251  1.4.2.2  martin 
    252  1.4.2.3  martin 	mem2_start = in32(GLOBAL_MEM2_AVAIL_START) & ~0x80000000;
    253  1.4.2.3  martin 	mem2_end = in32(GLOBAL_MEM2_AVAIL_END) & ~0x80000000;
    254  1.4.2.3  martin 	if (mem2_start < WII_MEM2_BASE) {
    255  1.4.2.3  martin 		/* Must have been booted from MINI. */
    256  1.4.2.3  martin 		mem2_start = WII_MEM2_BASE + DSP_MEM_SIZE;
    257  1.4.2.3  martin 		mem2_end = MINI_MEM2_START;
    258  1.4.2.3  martin 	}
    259  1.4.2.3  martin 	/*
    260  1.4.2.3  martin 	 * Clear GLOBAL_MEM2_AVAIL_{START,END} so we can detect the correct
    261  1.4.2.3  martin 	 * memory size when soft resetting from IOS to MINI.
    262  1.4.2.3  martin 	 */
    263  1.4.2.3  martin 	out32(GLOBAL_MEM2_AVAIL_START, 0);
    264  1.4.2.3  martin 	out32(GLOBAL_MEM2_AVAIL_END, 0);
    265  1.4.2.2  martin 
    266  1.4.2.2  martin 	/* MEM1 24MB 1T-SRAM */
    267  1.4.2.2  martin 	physmemr[0].start = WII_MEM1_BASE;
    268  1.4.2.2  martin 	physmemr[0].size = WII_MEM1_SIZE;
    269  1.4.2.2  martin 
    270  1.4.2.2  martin 	/* MEM2 64MB GDDR3 */
    271  1.4.2.2  martin 	physmemr[1].start = WII_MEM2_BASE;
    272  1.4.2.3  martin 	physmemr[1].size = WII_MEM2_SIZE;
    273  1.4.2.2  martin 
    274  1.4.2.2  martin 	physmemr[2].size = 0;
    275  1.4.2.2  martin 
    276  1.4.2.2  martin 	/* MEM1 available memory */
    277  1.4.2.2  martin 	availmemr[0].start = ((endkernel & ~0x80000000) + PGOFSET) & ~PGOFSET;
    278  1.4.2.2  martin 	availmemr[0].size = physmemr[0].size - availmemr[0].start;
    279  1.4.2.2  martin 	/* External framebuffer is at the end of MEM1 */
    280  1.4.2.2  martin 	availmemr[0].size -= XFB_SIZE;
    281  1.4.2.2  martin 
    282  1.4.2.2  martin 	/* MEM2 available memory */
    283  1.4.2.3  martin 	availmemr[1].start = mem2_start;
    284  1.4.2.3  martin 	availmemr[1].size = mem2_end - mem2_start;
    285  1.4.2.2  martin 
    286  1.4.2.2  martin 	availmemr[2].size = 0;
    287  1.4.2.2  martin 
    288  1.4.2.2  martin #ifdef BOOTHOWTO
    289  1.4.2.2  martin 	/*
    290  1.4.2.2  martin 	 * boothowto
    291  1.4.2.2  martin 	 */
    292  1.4.2.2  martin 	boothowto = BOOTHOWTO;
    293  1.4.2.2  martin #endif
    294  1.4.2.2  martin 
    295  1.4.2.2  martin 	/* HID4[L2_CCFI] must be set to 1 for correct operation of L2 cache */
    296  1.4.2.2  martin 	mtspr(IBM750CL_SPR_HID4, mfspr(IBM750CL_SPR_HID4) | L2_CCFI);
    297  1.4.2.2  martin 
    298  1.4.2.2  martin 	/* Configure L2 cache */
    299  1.4.2.2  martin 	l2cr_config = L2CR_L2E | L2CR_L2PE;
    300  1.4.2.2  martin 
    301  1.4.2.2  martin 	if (bus_space_init(&wii_mem_tag, "iomem",
    302  1.4.2.2  martin 			   ex_storage[0], sizeof(ex_storage[0]))) {
    303  1.4.2.2  martin 		panic("bus_space_init failed");
    304  1.4.2.2  martin 	}
    305  1.4.2.2  martin 
    306  1.4.2.2  martin 	/*
    307  1.4.2.2  martin 	 * Initialize the BAT registers
    308  1.4.2.2  martin 	 */
    309  1.4.2.2  martin 	oea_batinit(
    310  1.4.2.2  martin 	    WII_IOMEM_BASE, BAT_BL_32M,
    311  1.4.2.2  martin 	    0);
    312  1.4.2.2  martin 
    313  1.4.2.2  martin 	/*
    314  1.4.2.2  martin 	 * Set up trap vectors
    315  1.4.2.2  martin 	 */
    316  1.4.2.2  martin 	oea_init(NULL);
    317  1.4.2.2  martin 
    318  1.4.2.2  martin 	/*
    319  1.4.2.2  martin 	 * Get CPU clock
    320  1.4.2.2  martin 	 */
    321  1.4.2.2  martin 	ticks_per_sec = TIMEBASE_FREQ_HZ;
    322  1.4.2.2  martin 	cpu_timebase = ticks_per_sec;
    323  1.4.2.2  martin 
    324  1.4.2.2  martin 	wii_setup();
    325  1.4.2.2  martin 
    326  1.4.2.2  martin 	uvm_md_init();
    327  1.4.2.2  martin 
    328  1.4.2.2  martin 	/*
    329  1.4.2.2  martin 	 * Initialize pmap module.
    330  1.4.2.2  martin 	 */
    331  1.4.2.2  martin 	pmap_bootstrap(startkernel, endkernel);
    332  1.4.2.2  martin 
    333  1.4.2.2  martin 	/* Now enable translation (and machine checks/recoverable interrupts) */
    334  1.4.2.2  martin 	__asm __volatile ("sync; mfmsr %0; ori %0,%0,%1; mtmsr %0; isync"
    335  1.4.2.2  martin 			  : "=r"(scratch)
    336  1.4.2.2  martin 			  : "K"(PSL_IR|PSL_DR|PSL_ME|PSL_RI));
    337  1.4.2.2  martin 
    338  1.4.2.2  martin 	/*
    339  1.4.2.2  martin 	 * Setup decrementer
    340  1.4.2.2  martin 	 */
    341  1.4.2.2  martin 	init_decrementer();
    342  1.4.2.2  martin }
    343  1.4.2.2  martin 
    344  1.4.2.2  martin void
    345  1.4.2.2  martin mem_regions(struct mem_region **mem, struct mem_region **avail)
    346  1.4.2.2  martin {
    347  1.4.2.2  martin 	*mem = physmemr;
    348  1.4.2.2  martin 	*avail = availmemr;
    349  1.4.2.2  martin }
    350  1.4.2.2  martin 
    351  1.4.2.2  martin /*
    352  1.4.2.2  martin  * Machine dependent startup code.
    353  1.4.2.2  martin  */
    354  1.4.2.2  martin void
    355  1.4.2.2  martin cpu_startup(void)
    356  1.4.2.2  martin {
    357  1.4.2.2  martin 	extern void pi_init_intr(void);
    358  1.4.2.2  martin 
    359  1.4.2.2  martin 	oea_startup(NULL);
    360  1.4.2.2  martin 
    361  1.4.2.2  martin 	/*
    362  1.4.2.2  martin 	 * Now that we have VM, malloc()s are OK in bus_space.
    363  1.4.2.2  martin 	 */
    364  1.4.2.2  martin 	bus_space_mallocok();
    365  1.4.2.2  martin 
    366  1.4.2.2  martin 	/* Set up interrupt controller */
    367  1.4.2.2  martin 	pic_init();
    368  1.4.2.2  martin 	pi_init_intr();
    369  1.4.2.2  martin 	oea_install_extint(pic_ext_intr);
    370  1.4.2.2  martin }
    371  1.4.2.2  martin 
    372  1.4.2.2  martin /*
    373  1.4.2.2  martin  * No early console support.
    374  1.4.2.2  martin  */
    375  1.4.2.2  martin void
    376  1.4.2.2  martin consinit(void)
    377  1.4.2.2  martin {
    378  1.4.2.2  martin #if NUKBD > 0
    379  1.4.2.2  martin 	ukbd_cnattach();
    380  1.4.2.2  martin #endif
    381  1.4.2.2  martin }
    382  1.4.2.2  martin 
    383  1.4.2.2  martin /*
    384  1.4.2.2  martin  * Halt or reboot the machine after syncing/dumping according to howto.
    385  1.4.2.2  martin  */
    386  1.4.2.2  martin void
    387  1.4.2.2  martin cpu_reboot(int howto, char *what)
    388  1.4.2.2  martin {
    389  1.4.2.2  martin 	static int syncing;
    390  1.4.2.2  martin 	extern void disable_intr(void);
    391  1.4.2.2  martin 
    392  1.4.2.2  martin 	boothowto = howto;
    393  1.4.2.2  martin 	if (!cold && !(howto & RB_NOSYNC) && !syncing) {
    394  1.4.2.2  martin 		syncing = 1;
    395  1.4.2.2  martin 		vfs_shutdown();		/* sync */
    396  1.4.2.2  martin 		resettodr();		/* set wall clock */
    397  1.4.2.2  martin 	}
    398  1.4.2.2  martin 	splhigh();
    399  1.4.2.2  martin 	if (!cold && (howto & RB_DUMP)) {
    400  1.4.2.2  martin 		oea_dumpsys();
    401  1.4.2.2  martin 	}
    402  1.4.2.2  martin 	pmf_system_shutdown(boothowto);
    403  1.4.2.2  martin 	doshutdownhooks();
    404  1.4.2.2  martin 
    405  1.4.2.2  martin 	disable_intr();
    406  1.4.2.2  martin 
    407  1.4.2.2  martin 	/* Force halt on panic to capture the cause on screen. */
    408  1.4.2.2  martin 	if (panicstr != NULL) {
    409  1.4.2.2  martin 		howto |= RB_HALT;
    410  1.4.2.2  martin 	}
    411  1.4.2.2  martin 	if ((howto & RB_POWERDOWN) == RB_POWERDOWN) {
    412  1.4.2.2  martin 		printf("power off\n\n");
    413  1.4.2.2  martin 		out32(HW_GPIOB_OUT, in32(HW_GPIOB_OUT) | __BIT(GPIO_SHUTDOWN));
    414  1.4.2.2  martin 		delay(100000);
    415  1.4.2.2  martin 		printf("power off failed!\n\n");
    416  1.4.2.2  martin 	}
    417  1.4.2.2  martin 	if (howto & RB_HALT) {
    418  1.4.2.2  martin 		printf("halted\n\n");
    419  1.4.2.2  martin 		while (1);
    420  1.4.2.2  martin 	}
    421  1.4.2.2  martin 
    422  1.4.2.2  martin 	printf("rebooting\n\n");
    423  1.4.2.2  martin 	out32(HW_RESETS, in32(HW_RESETS) & ~RSTBINB);
    424  1.4.2.2  martin 	while (1);
    425  1.4.2.2  martin }
    426  1.4.2.2  martin 
    427  1.4.2.2  martin static void
    428  1.4.2.2  martin wii_setup(void)
    429  1.4.2.2  martin {
    430  1.4.2.2  martin 	/* Turn on the drive slot LED. */
    431  1.4.2.3  martin 	wii_slot_led(true);
    432  1.4.2.2  martin 
    433  1.4.2.2  martin 	/* Enable PPC access to SHUTDOWN GPIO. */
    434  1.4.2.2  martin 	out32(HW_GPIO_OWNER, in32(HW_GPIO_OWNER) | __BIT(GPIO_SHUTDOWN));
    435  1.4.2.3  martin 
    436  1.4.2.3  martin 	/* Enable PPC access to EXI bus. */
    437  1.4.2.3  martin 	out32(HW_AIPPROT, in32(HW_AIPPROT) | ENAHBIOPI);
    438  1.4.2.2  martin }
    439  1.4.2.2  martin 
    440  1.4.2.2  martin static void
    441  1.4.2.2  martin init_decrementer(void)
    442  1.4.2.2  martin {
    443  1.4.2.2  martin 	extern uint32_t ns_per_tick;
    444  1.4.2.2  martin 	extern uint32_t ticks_per_intr;
    445  1.4.2.2  martin 	extern u_long ticks_per_sec;
    446  1.4.2.2  martin 	int scratch, msr;
    447  1.4.2.2  martin 
    448  1.4.2.2  martin 	KASSERT(ticks_per_sec != 0);
    449  1.4.2.2  martin 
    450  1.4.2.2  martin 	__asm volatile ("mfmsr %0; andi. %1,%0,%2; mtmsr %1"
    451  1.4.2.2  martin 			: "=r"(msr), "=r"(scratch) : "K"((u_short)~PSL_EE));
    452  1.4.2.2  martin 	ns_per_tick = 1000000000 / ticks_per_sec;
    453  1.4.2.2  martin 	ticks_per_intr = ticks_per_sec / hz;
    454  1.4.2.2  martin 	cpu_timebase = ticks_per_sec;
    455  1.4.2.2  martin 
    456  1.4.2.2  martin 	curcpu()->ci_lasttb = mftbl();
    457  1.4.2.2  martin 
    458  1.4.2.2  martin 	mtspr(SPR_DEC, ticks_per_intr);
    459  1.4.2.2  martin 	mtmsr(msr);
    460  1.4.2.2  martin }
    461