boot-132.tar.gz

[apple/boot.git] / i386 / libsaio / misc.c

diff --git a/i386/libsaio/misc.c b/i386/libsaio/misc.c
index ed9703fb554ff559b08b157fd3c245d0cf326259..64a6221a0e361b10041a01fe2b5cc9ef60522ed1 100644 (file)
--- a/i386/libsaio/misc.c
+++ b/i386/libsaio/misc.c
@@ -1,12 +1,12 @@
 /*
- * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_LICENSE_HEADER_START@
  * 
- * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
+ * Portions Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights
  * Reserved.  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 1.1 (the "License").  You may not use this file
+ * 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.apple.com/publicsource and read it before using
  * this file.
@@ -44,7 +44,6 @@
  * All rights reserved.
  */
 
-#include "io_inline.h"
 #include "libsaio.h"
 
 /*
@@ -74,48 +73,70 @@
 
 void enableA20()
 {
-       /* make sure that the input buffer is empty */
-       while (inb(PORT_B) & KB_INFULL);
+    /* make sure that the input buffer is empty */
+    while (inb(PORT_B) & KB_INFULL);
 
-       /* make sure that the output buffer is empty */
-       if (inb(PORT_B) & KB_OUTFULL)
-               (void)inb(PORT_A);
+    /* make sure that the output buffer is empty */
+    if (inb(PORT_B) & KB_OUTFULL)
+        (void)inb(PORT_A);
 
-       /* make sure that the input buffer is empty */
-       while (inb(PORT_B) & KB_INFULL);
+    /* make sure that the input buffer is empty */
+    while (inb(PORT_B) & KB_INFULL);
 
-       /* write output port */
-       outb(PORT_B, CMD_WOUT);
+    /* write output port */
+    outb(PORT_B, CMD_WOUT);
+    delay(100);
 
-       /* wait until command is accepted */
-       while (inb(PORT_B) & KB_INFULL);
+    /* wait until command is accepted */
+    while (inb(PORT_B) & KB_INFULL);
 
-       outb(PORT_A, KB_A20);
+    outb(PORT_A, KB_A20);
+    delay(100);
 
-       while (inb(PORT_B) & KB_INFULL);        /* wait until done */
+    while (inb(PORT_B) & KB_INFULL);   /* wait until done */
 }
 
-void sleep(int n)
+static inline void
+do_cpuid(uint32_t selector, uint32_t *data)
 {
-       int     endtime = (time18() + 18*n);
-       while (time18() < endtime);
+       asm volatile ("cpuid"
+               : "=a" (data[0]),
+                 "=b" (data[1]),
+                 "=c" (data[2]),
+                 "=d" (data[3])
+               : "a"(selector));
 }
 
-void turnOffFloppy(void)
+
+//==========================================================================
+// Check to see that this is a supported hardware configuration.
+// If this hardware is supported, return 0.
+// If this hardware is not supported, return an error code.
+
+int
+checkForSupportedHardware()
 {
-       /*
-        * Disable floppy:
-        * Hold controller in reset,
-        * disable DMA and IRQ,
-        * turn off floppy motors.
-        */
-       outb(0x3F2, 0x00);
+    uint32_t cpuid_result[4];
+
+    do_cpuid(1, cpuid_result);
+    if ((cpuid_result[3] & 0x04000000) == 0) {
+        // Missing SSE2
+        return 2;
+    }
+    return 0;
 }
 
-char * newString(char * oldString)
+#ifndef BOOT1
+
+//==========================================================================
+// Return the platform name for this hardware.
+//
+
+void
+getPlatformName(char *nameBuf)
 {
-    if ( oldString )
-        return strcpy(malloc(strlen(oldString)+1), oldString);
-    else
-        return NULL;
+    strcpy(nameBuf, "ACPI");
 }
+
+#endif
+