xnu-7195.101.1.tar.gz

[apple/xnu.git] / osfmk / i386 / postcode.h

diff --git a/osfmk/i386/postcode.h b/osfmk/i386/postcode.h
index d0065f7a6c818909f340bd72fcadc68641c45cfe..960b7d32ceb223ec654856038ec6874e3ffbcaad 100644 (file)
--- a/osfmk/i386/postcode.h
+++ b/osfmk/i386/postcode.h
@@ -1,159 +1,207 @@
 /*
 /*

- * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2008 Apple Computer, Inc. All rights reserved.

  *
  *

- * @APPLE_LICENSE_HEADER_START@
- * 
- * The contents of this file constitute Original Code as defined in and
- * are subject to the Apple Public Source License Version 1.1 (the
- * "License").  You may not use this file except in compliance with the
- * License.  Please obtain a copy of the License at
- * http://www.apple.com/publicsource and read it before using this file.
- * 
- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ *
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER

  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,

- * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
- * License for the specific language governing rights and limitations
- * under the License.
- * 
- * @APPLE_LICENSE_HEADER_END@
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@

  */
 
  */
 

-#ifndef        _I386_POSTCODE_H_
-#define        _I386_POSTCODE_H_
+#ifndef _I386_POSTCODE_H_
+#define _I386_POSTCODE_H_

 
 

-#ifndef DEBUG
-#include <debug.h>
-#endif
+/*
+ * Postcodes are no longer enabled by default in the DEBUG kernel
+ * because platforms may not have builtin port 0x80 support.
+ * To re-enable postcode outpout, uncomment the following define:
+ */
+//#define DEBUG_POSTCODE 1

 
 /* Define this to delay about 1 sec after posting each code */
 
 /* Define this to delay about 1 sec after posting each code */

-/* #define POSTCODE_DELAY 1 */
+//#define POSTCODE_DELAY 1

 
 /* The POSTCODE is port 0x80 */
 
 /* The POSTCODE is port 0x80 */

-#define        POSTPORT 0x80
+#define POSTPORT 0x80

 
 

-#define        SPINCOUNT       100000000
-#define CPU_PAUSE()    rep; nop
+#define SPINCOUNT       300000000
+#define CPU_PAUSE()     rep; nop

 
 

-#if DEBUG
+#if DEBUG_POSTCODE

 /*
  * Macro to output byte value to postcode, destoying register al.
  * Additionally, if POSTCODE_DELAY, spin for about a second.
  */
 #if POSTCODE_DELAY
 /*
  * Macro to output byte value to postcode, destoying register al.
  * Additionally, if POSTCODE_DELAY, spin for about a second.
  */
 #if POSTCODE_DELAY

-#define POSTCODE_AL                    \
-        outb    %al,$(POSTPORT);       \
-       movl    $(SPINCOUNT), %eax;     \
-1:                                     \
-       CPU_PAUSE();                    \
-       decl    %eax;                   \
+#define POSTCODE_AL                     \
+       outb    %al,$(POSTPORT);        \
+       movl    $(SPINCOUNT), %eax;     \
+1:                                      \
+       CPU_PAUSE();                    \
+       decl    %eax;                   \
+       jne     1b
+#define POSTCODE_AX                     \
+       outw    %ax,$(POSTPORT);        \
+       movl    $(SPINCOUNT), %eax;     \
+1:                                      \
+       CPU_PAUSE();                    \
+       decl    %eax;                   \

        jne     1b
 #else
        jne     1b
 #else

-#define POSTCODE_AL                    \
-        outb    %al,$(POSTPORT)
+#define POSTCODE_AL                     \
+       outb    %al,$(POSTPORT)
+#define POSTCODE_AX                     \
+       outw    %ax,$(POSTPORT)

 #endif /* POSTCODE_DELAY */
 
 #endif /* POSTCODE_DELAY */
 

-#define POSTCODE(XX)                   \
-       mov     $(XX), %al;             \
+#define POSTCODE(XX)                    \
+       mov     $(XX), %al;             \

        POSTCODE_AL
 
        POSTCODE_AL
 

-/* Output byte value to postcode, without destoying register eax */ 
-#define        POSTCODE_SAVE_EAX(XX)           \
-       push    %eax;                   \
-       POSTCODE(XX);                   \
+#define POSTCODE2(XXXX)                 \
+       mov     $(XXXX), %ax;           \
+       POSTCODE_AX
+
+/* Output byte value to postcode, without destoying register eax */
+#define POSTCODE_SAVE_EAX(XX)           \
+       push    %eax;                   \
+       POSTCODE(XX);                   \

        pop     %eax
 
 /*
  * Display a 32-bit value to the post card - low byte to high byte
  * Entry: value in %ebx
  * Exit: %ebx preserved; %eax destroyed
        pop     %eax
 
 /*
  * Display a 32-bit value to the post card - low byte to high byte
  * Entry: value in %ebx
  * Exit: %ebx preserved; %eax destroyed

- */ 
-#define POSTCODE32_EBX                 \
-       roll    $8, %ebx;               \
-       movl    %ebx, %eax;             \
-       POSTCODE_AL;                    \
-                                       \
-       roll    $8, %ebx;               \
-       movl    %ebx, %eax;             \
-       POSTCODE_AL;                    \
-                                       \
-       roll    $8, %ebx;               \
-       movl    %ebx, %eax;             \
-       POSTCODE_AL;                    \
-                                       \
-       roll    $8, %ebx;               \
-       movl    %ebx, %eax;             \
+ */
+#define POSTCODE32_EBX                  \
+       roll    $8, %ebx;               \
+       movl    %ebx, %eax;             \
+       POSTCODE_AL;                    \
+                                        \
+       roll    $8, %ebx;               \
+       movl    %ebx, %eax;             \
+       POSTCODE_AL;                    \
+                                        \
+       roll    $8, %ebx;               \
+       movl    %ebx, %eax;             \
+       POSTCODE_AL;                    \
+                                        \
+       roll    $8, %ebx;               \
+       movl    %ebx, %eax;             \

        POSTCODE_AL
 
        POSTCODE_AL
 

-#else  /* DEBUG */
+#else   /* DEBUG_POSTCODE */

 #define POSTCODE_AL
 #define POSTCODE_AL

+#define POSTCODE_AX

 #define POSTCODE(X)
 #define POSTCODE(X)

+#define POSTCODE2(X)
+#define POSTCODE_SAVE_EAX(X)

 #define POSTCODE32_EBX
 #define POSTCODE32_EBX

-#endif /* DEBUG */
+#endif  /* DEBUG_POSTCODE */

 
 /*
  * The following postcodes are defined for stages of early startup:
  */
 
 
 /*
  * The following postcodes are defined for stages of early startup:
  */
 

-#define        PSTART_ENTRY            0xFF
-#define PSTART_PAGE_TABLES     0xFE
-#define PSTART_BEFORE_PAGING   0xFD
-#define VSTART_ENTRY           0xFC
-#define VSTART_STACK_SWITCH    0xFB
-#define VSTART_EXIT            0xFA
-#define        I386_INIT_ENTRY         0xF9
-#define        CPU_INIT_D              0xF8
-#define        PROCESSOR_BOOTSTRAP_D   0xF7
-#define        PE_INIT_PLATFORM_D      0xF6
-#define        THREAD_BOOTSTRAP_D      0xF5
-
-#define        SLAVE_PSTART_ENTRY      0xEF
-#define        REAL_TO_PROT_ENTRY      0xEE
-#define        REAL_TO_PROT_EXIT       0xED
-#define        STARTPROG_ENTRY         0xEC
-#define        STARTPROG_EXIT          0xEB
-#define        SLAVE_START_ENTRY       0xEA
-#define        SLAVE_START_EXIT        0xE9
-#define        SVSTART_ENTRY           0xE8
-#define        SVSTART_DESC_INIT       0xE7
-#define        SVSTART_STACK_SWITCH    0xE6
-#define        SVSTART_EXIT            0xE5
-#define        I386_INIT_SLAVE         0xE4
-
-#define        MP_KDP_ENTER            0xDB            /* Machine in kdp DeBugger */
-#define        PANIC_HLT               0xD1            /* Die an early death */ 
-
-#define ACPI_WAKE_START_ENTRY  0xCF
-#define ACPI_WAKE_PROT_ENTRY   0xCE
-#define ACPI_WAKE_PAGED_ENTRY  0xCD
+#define PSTART_ENTRY                    0xFF
+#define PSTART_REBASE                   0xFE
+#define PSTART_BEFORE_PAGING            0xFE
+#define PSTART_VSTART                   0xFD
+#define VSTART_ENTRY                    0xFC
+#define VSTART_IDT_INIT                 0xFB
+#define VSTART_IDLE_PTS_INIT            0xFA
+#define VSTART_PHYSMAP_INIT             0xF9
+#define VSTART_DESC_ALIAS_INIT          0xF8
+#define VSTART_SET_CR3                  0xF7
+#define VSTART_CPU_DESC_INIT            0xF6
+#define VSTART_CPU_MODE_INIT            0xF5
+#define VSTART_EXIT                     0xF4
+#define I386_INIT_ENTRY                 0xF3
+#define CPU_INIT_D                      0xF2
+#define PE_INIT_PLATFORM_D              0xF1
+
+#define SLAVE_STARTPROG_ENTRY           0xEF
+#define SLAVE_PSTART                    0xEE
+#define I386_INIT_SLAVE                 0xED
+
+#define PANIC_DOUBLE_FAULT              0xDF    /* Double Fault exception */
+#define PANIC_MACHINE_CHECK             0xDC    /* Machine-Check */
+#define MP_KDP_ENTER                    0xDB    /* Debugger Begin */
+#define MP_KDP_EXIT                     0xDE    /* Debugger End */
+#define PANIC_HLT                       0xD1    /* Die an early death */
+#define BOOT_TRAP_HLT                   0xD0    /* D'oh! even earlier */
+
+#define ACPI_WAKE_START_ENTRY           0xCF
+#define ACPI_WAKE_PROT_ENTRY            0xCE
+#define ACPI_WAKE_PAGED_ENTRY           0xCD
+
+#define CPU_DESC_LOAD_ENTRY             0xBF
+#define CPU_DESC_LOAD_GS_BASE           0xBE
+#define CPU_DESC_LOAD_KERNEL_GS_BASE    0xBD
+#define CPU_DESC_LOAD_GDT               0xBC
+#define CPU_DESC_LOAD_IDT               0xBB
+#define CPU_DESC_LOAD_LDT               0xBA
+#define CPU_DESC_LOAD_TSS               0xB9
+#define CPU_DESC_LOAD_EXIT              0xB7

 
 #ifndef ASSEMBLER
 inline static void
 
 #ifndef ASSEMBLER
 inline static void

-_postcode_delay(uint32_t       spincount)
+_postcode_delay(uint32_t        spincount)

 {
 {

-       asm volatile("1:                        \n\t"
-                    "  rep; nop;               \n\t"   
-                    "  decl %%eax;             \n\t"
-                    "  jne 1b"
-                    : : "a" (spincount));
+       asm volatile ("1:                       \n\t"
+                      "  rep; nop;             \n\t"
+                      "  decl %%eax;           \n\t"
+                      "  jne 1b"
+                      : : "a" (spincount));

 }
 inline static void
 }
 inline static void

-_postcode(uint8_t      xx)
+_postcode(uint8_t       xx)

 {
 {

-       asm volatile("outb %0, %1" : : "a" (xx), "N" (POSTPORT));
+       asm volatile ("outb %0, %1" : : "a" (xx), "N" (POSTPORT));

 }
 }

-#if    DEBUG

 inline static void
 inline static void

-postcode(uint8_t       xx)
+_postcode2(uint16_t     xxxx)
+{
+       asm volatile ("outw %0, %1" : : "a" (xxxx), "N" (POSTPORT));
+}
+#if     DEBUG_POSTCODE
+inline static void
+postcode(uint8_t        xx)

 {
        _postcode(xx);
 {
        _postcode(xx);

-#if    POSTCODE_DELAY
+#if     POSTCODE_DELAY
+       _postcode_delay(SPINCOUNT);
+#endif
+}
+inline static void
+postcode2(uint8_t       xxxx)
+{
+       _postcode2(xxxx);
+#if     POSTCODE_DELAY

        _postcode_delay(SPINCOUNT);
 #endif
 }
 #else
        _postcode_delay(SPINCOUNT);
 #endif
 }
 #else

-#define postcode(xx)
+#define postcode(xx) do {} while(0)
+#define postcode2(xxxx) do {} while(0)

 #endif
 #endif
 
 #endif
 #endif