xnu-3789.70.16.tar.gz

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

diff --git a/osfmk/i386/postcode.h b/osfmk/i386/postcode.h
index ed74d9dc259c51233759b2285b8360de27445340..d2a8593547e946f7d293b05f7a5f55ef9aba8fe6 100644 (file)
--- a/osfmk/i386/postcode.h
+++ b/osfmk/i386/postcode.h
@@ -1,34 +1,43 @@
 /*
 /*

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

  *
  *

- * @APPLE_LICENSE_HEADER_START@
+ * @APPLE_OSREFERENCE_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 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.

  * 
  * 

- * This Original Code and all software distributed under the License are
- * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * 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.
+ * 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_LICENSE_HEADER_END@
+ * @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 */
 #define        POSTPORT 0x80
 
 /* The POSTCODE is port 0x80 */
 #define        POSTPORT 0x80


@@ -36,12 +45,11 @@
 #define        SPINCOUNT       300000000
 #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.
  */
 /*
  * 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,$(POSTPORT);       \
 #if POSTCODE_DELAY
 #define POSTCODE_AL                    \
         outb    %al,$(POSTPORT);       \


@@ -50,15 +58,28 @@
        CPU_PAUSE();                    \
        decl    %eax;                   \
        jne     1b
        CPU_PAUSE();                    \
        decl    %eax;                   \
        jne     1b

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

 #else
 #define POSTCODE_AL                    \
         outb    %al,$(POSTPORT)
 #else
 #define POSTCODE_AL                    \
         outb    %al,$(POSTPORT)

+#define POSTCODE_AX                    \
+        outw    %ax,$(POSTPORT)

 #endif /* POSTCODE_DELAY */
 
 #define POSTCODE(XX)                   \
        mov     $(XX), %al;             \
        POSTCODE_AL
 
 #endif /* POSTCODE_DELAY */
 
 #define POSTCODE(XX)                   \
        mov     $(XX), %al;             \
        POSTCODE_AL
 

+#define POSTCODE2(XXXX)                        \
+       mov     $(XXXX), %ax;           \
+       POSTCODE_AX
+

 /* Output byte value to postcode, without destoying register eax */ 
 #define        POSTCODE_SAVE_EAX(XX)           \
        push    %eax;                   \
 /* Output byte value to postcode, without destoying register eax */ 
 #define        POSTCODE_SAVE_EAX(XX)           \
        push    %eax;                   \


@@ -87,40 +108,38 @@
        movl    %ebx, %eax;             \
        POSTCODE_AL
 
        movl    %ebx, %eax;             \
        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_RELOC                   0xFE
-#define        PSTART_ENTRY                    0xFD
-#define PSTART_PAGE_TABLES             0xFC
-#define PSTART_BEFORE_PAGING           0xFB
-#define VSTART_ENTRY                   0xFA
-#define VSTART_STACK_SWITCH            0xF9
-#define VSTART_EXIT                    0xF8
-#define        I386_INIT_ENTRY                 0xF7
-#define        CPU_INIT_D                      0xF6
-#define        PE_INIT_PLATFORM_D              0xF5
-
-#define        SLAVE_RSTART_ENTRY              0xEF
-#define        SLAVE_REAL_TO_PROT_ENTRY        0xEE
-#define        SLAVE_REAL_TO_PROT_EXIT         0xED
-#define        SLAVE_STARTPROG_ENTRY           0xEC
-#define        SLAVE_STARTPROG_EXIT            0xEB
-#define        SLAVE_PSTART_ENTRY              0xEA
-#define        SLAVE_PSTART_EXIT               0xE9
-#define        SLAVE_VSTART_ENTRY              0xE8
-#define        SLAVE_VSTART_DESC_INIT          0xE7
-#define        SLAVE_VSTART_STACK_SWITCH       0xE6
-#define        SLAVE_VSTART_EXIT               0xE5
-#define        I386_INIT_SLAVE                 0xE4
+#define        PSTART_ENTRY                    0xFF
+#define PSTART_REBASE                  0xFE
+#define PSTART_BEFORE_PAGING           0xFE
+#define        PSTART_VSTART                   0xFD
+#define VSTART_ENTRY                   0xFC
+#define VSTART_IDLE_PTS_INIT           0xFB
+#define VSTART_PHYSMAP_INIT            0xFA
+#define VSTART_DESC_ALIAS_INIT         0xF9
+#define VSTART_SET_CR3                 0xF8
+#define VSTART_CPU_DESC_INIT           0xF7
+#define VSTART_CPU_MODE_INIT           0xF6
+#define VSTART_EXIT                    0xF5
+#define        I386_INIT_ENTRY                 0xF4
+#define        CPU_INIT_D                      0xF3
+#define        PE_INIT_PLATFORM_D              0xF2
+
+#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             0xDE    /* Machine-Check */
 
 #define        PANIC_DOUBLE_FAULT              0xDF    /* Double Fault exception */
 #define        PANIC_MACHINE_CHECK             0xDE    /* Machine-Check */


@@ -157,7 +176,12 @@ _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
+_postcode2(uint16_t    xxxx)
+{
+       asm volatile("outw %0, %1" : : "a" (xxxx), "N" (POSTPORT));
+}
+#if    DEBUG_POSTCODE

 inline static void
 postcode(uint8_t       xx)
 {
 inline static void
 postcode(uint8_t       xx)
 {


@@ -166,8 +190,17 @@ postcode(uint8_t   xx)
        _postcode_delay(SPINCOUNT);
 #endif
 }
        _postcode_delay(SPINCOUNT);
 #endif
 }

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

 #else
 #else

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

 #endif
 #endif
 
 #endif
 #endif