/*
- * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2008 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
- * @APPLE_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. Please obtain a copy of the License at
- * http://www.opensource.apple.com/apsl/ and read it before using this
- * file.
- *
+ * 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,
* 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 POSTCODE_DELAY 1 */
+//#define POSTCODE_DELAY 1
/* 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
-#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 $(SPINCOUNT), %eax; \
+1: \
+ CPU_PAUSE(); \
+ decl %eax; \
jne 1b
#else
-#define POSTCODE_AL \
- outb %al,$(POSTPORT)
+#define POSTCODE_AL \
+ outb %al,$(POSTPORT)
+#define POSTCODE_AX \
+ outw %ax,$(POSTPORT)
#endif /* POSTCODE_DELAY */
-#define POSTCODE(XX) \
- mov $(XX), %al; \
+#define POSTCODE(XX) \
+ mov $(XX), %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
- */
-#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
-#else /* DEBUG */
+#else /* DEBUG_POSTCODE */
#define POSTCODE_AL
+#define POSTCODE_AX
#define POSTCODE(X)
+#define POSTCODE2(X)
+#define POSTCODE_SAVE_EAX(X)
#define POSTCODE32_EBX
-#endif /* DEBUG */
+#endif /* DEBUG_POSTCODE */
/*
* 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
-_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
-_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
-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);
-#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
-#define postcode(xx)
+#define postcode(xx) do {} while(0)
+#define postcode2(xxxx) do {} while(0)
#endif
#endif
projects / apple / xnu.git / blobdiff