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      1 /*	$NetBSD: acpi_stub.c,v 1.7 2012/12/27 20:21:51 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2003 Marcel Moolenaar
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  *
     11  * 1. Redistributions of source code must retain the above copyright
     12  *    notice, this list of conditions and the following disclaimer.
     13  * 2. Redistributions in binary form must reproduce the above copyright
     14  *    notice, this list of conditions and the following disclaimer in the
     15  *    documentation and/or other materials provided with the distribution.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 
     30 
     31 
     32 #include <sys/cdefs.h>
     33 /* __FBSDID("$FreeBSD: src/sys/boot/ia64/libski/acpi_stub.c,v 1.3 2003/12/09 08:35:17 marcel Exp $"); */
     34 
     35 #include <sys/types.h>
     36 #include <sys/lock.h>
     37 #include <lib/libkern/libkern.h>
     38 #include <lib/libsa/loadfile.h>
     39 #include <bootstrap.h>
     40 #include <dev/acpi/acpica.h>
     41 
     42 #define APIC_IO_SAPIC                   6
     43 #define APIC_LOCAL_SAPIC                7
     44 
     45 #pragma pack(1) /* XXX: Standardify me */
     46 
     47 typedef struct  /* LOCAL SAPIC */
     48 {
     49         ACPI_SUBTABLE_HEADER     Header;
     50         UINT8           ProcessorId;            /* ACPI processor id */
     51         UINT8           LocalSapicId;           /* Processor local SAPIC id */
     52         UINT8           LocalSapicEid;          /* Processor local SAPIC eid */
     53         UINT8           Reserved[3];
     54         UINT32          ProcessorEnabled: 1;
     55         UINT32          FlagsReserved: 31;
     56 } LOCAL_SAPIC;
     57 
     58 typedef struct  /* IO SAPIC */
     59 {
     60         ACPI_SUBTABLE_HEADER	Header;
     61         UINT8			IoSapicId;      /* I/O SAPIC ID */
     62         UINT8			Reserved;       /* reserved - must be zero */
     63         UINT32			Vector;         /* interrupt base */
     64         UINT64			IoSapicAddress; /* SAPIC's physical address */
     65 } IO_SAPIC;
     66 
     67 /*
     68  */
     69 
     70 struct {
     71 	ACPI_TABLE_MADT		Header;
     72 	ACPI_MADT_LOCAL_SAPIC	cpu0;
     73 	ACPI_MADT_LOCAL_SAPIC	cpu1;
     74 	ACPI_MADT_LOCAL_SAPIC	cpu2;
     75 	ACPI_MADT_LOCAL_SAPIC	cpu3;
     76 	ACPI_MADT_IO_SAPIC	sapic;
     77 } apic = {
     78 	/* Header. */
     79 	{
     80 		ACPI_SIG_MADT,			/* Signature. */
     81 		sizeof(apic),			/* Length of table. */
     82 		0,				/* ACPI minor revision. */
     83 		0,				/* XXX checksum. */
     84 		"FBSD",				/* OEM Id. */
     85 		"SKI",				/* OEM table Id. */
     86 		0,				/* OEM revision. */
     87 		"FBSD",				/* ASL compiler Id. */
     88 		0,				/* ASL revision. */
     89 		0xfee00000,
     90 	},
     91 	/* cpu0. */
     92 	{
     93 		APIC_LOCAL_SAPIC,		/* Type. */
     94 		sizeof(apic.cpu0),		/* Length. */
     95 		0,				/* ACPI processor id */
     96 		0,				/* Processor local SAPIC id */
     97 		0,				/* Processor local SAPIC eid */
     98 		{ 0, 0, 0 },
     99 		1,				/* FL: Enabled. */
    100 	},
    101 	/* cpu1. */
    102 	{
    103 		APIC_LOCAL_SAPIC,		/* Type. */
    104 		sizeof(apic.cpu1),		/* Length. */
    105 		1,				/* ACPI processor id */
    106 		0,				/* Processor local SAPIC id */
    107 		1,				/* Processor local SAPIC eid */
    108 		{ 0, 0, 0 },
    109 		1,				/* FL: Enabled. */
    110 	},
    111 	/* cpu2. */
    112 	{
    113 		APIC_LOCAL_SAPIC,		/* Type. */
    114 		sizeof(apic.cpu2),		/* Length. */
    115 		2,				/* ACPI processor id */
    116 		1,				/* Processor local SAPIC id */
    117 		0,				/* Processor local SAPIC eid */
    118 		{ 0, 0, 0 },
    119 		0,				/* FL: Enabled. */
    120 	},
    121 	/* cpu3. */
    122 	{
    123 		APIC_LOCAL_SAPIC,		/* Type. */
    124 		sizeof(apic.cpu3),		/* Length. */
    125 		3,				/* ACPI processor id */
    126 		1,				/* Processor local SAPIC id */
    127 		1,				/* Processor local SAPIC eid */
    128 		{ 0, 0, 0 },
    129 		0,				/* FL: Enabled. */
    130 	},
    131 	/* sapic. */
    132 	{
    133 		APIC_IO_SAPIC,			/* Type. */
    134 		sizeof(apic.sapic),		/* Length. */
    135 		4,				/* IO SAPIC id. */
    136 		0,
    137 		16,				/* Interrupt base. */
    138 		0xfec00000			/* IO SAPIC address. */
    139 	}
    140 };
    141 
    142 struct {
    143 	ACPI_TABLE_HEADER	Header;
    144 	UINT64			apic_tbl;
    145 } xsdt = {
    146 	{
    147 		ACPI_SIG_XSDT,		/* Signature. */
    148 		sizeof(xsdt),		/* Length of table. */
    149 		0,			/* ACPI minor revision. */
    150 		0,			/* XXX checksum. */
    151 		"FBSD",			/* OEM Id. */
    152 		"SKI",			/* OEM table Id. */
    153 		0,			/* OEM revision. */
    154 		"FBSD",			/* ASL compiler Id. */
    155 		0			/* ASL revision. */
    156 	},
    157 	0UL				/* XXX APIC table address. */
    158 };
    159 
    160 ACPI_TABLE_RSDP acpi_root = {
    161 	ACPI_SIG_RSDP,
    162 	0,				/* XXX checksum. */
    163 	"FBSD",
    164 	2,				/* ACPI Rev 2.0. */
    165 	0UL,
    166 	sizeof(xsdt),			/* XSDT length. */
    167 	0UL,				/* XXX PA of XSDT. */
    168 	0,				/* XXX Extended checksum. */
    169 };
    170 
    171 #pragma pack() /* Reset Packing */
    172 
    173 static void
    174 cksum(void *addr, int sz, UINT8 *sum)
    175 {
    176 	UINT8 *p, s;
    177 
    178 	p = addr;
    179 	s = 0;
    180 	while (sz--)
    181 		s += *p++;
    182 	*sum = -s;
    183 }
    184 
    185 void
    186 acpi_stub_init(void)
    187 {
    188 	acpi_root.XsdtPhysicalAddress = (UINT64)&xsdt;
    189 	cksum(&acpi_root, 20, &acpi_root.Checksum);
    190 	cksum(&acpi_root, sizeof(acpi_root), &acpi_root.ExtendedChecksum);
    191 
    192 	xsdt.apic_tbl = (UINT32)(uintptr_t)&apic;
    193 	cksum(&xsdt, sizeof(xsdt), &xsdt.Header.Checksum);
    194 }
    195