Add extra test for CONFIG_ATA in src/disk.c.

[seabios.git] / src / serial.c

diff --git a/src/serial.c b/src/serial.c
index 63d17666fd88adf4b162c92a769d029174ff4abf..f9857e45080c1310f4a1096d8be19ff5eb950887 100644 (file)
--- a/src/serial.c
+++ b/src/serial.c
@@ -3,29 +3,63 @@
 // Copyright (C) 2008  Kevin O'Connor <kevin@koconnor.net>
 // Copyright (C) 2002  MandrakeSoft S.A.
 //
-// This file may be distributed under the terms of the GNU GPLv3 license.
+// This file may be distributed under the terms of the GNU LGPLv3 license.
 
-#include "biosvar.h" // struct bregs
+#include "biosvar.h" // SET_BDA
 #include "util.h" // debug_enter
+#include "bregs.h" // struct bregs
 
 
 /****************************************************************
  * COM ports
  ****************************************************************/
 
+static u16
+detect_serial(u16 port, u8 timeout, u8 count)
+{
+    outb(0x02, port+1);
+    if (inb(port+1) != 0x02)
+        return 0;
+    if (inb(port+2) != 0x02)
+        return 0;
+    outb(0x00, port+1);
+    SET_BDA(port_com[count], port);
+    SET_BDA(com_timeout[count], timeout);
+    return 1;
+}
+
+void
+serial_setup()
+{
+    if (! CONFIG_SERIAL)
+        return;
+    dprintf(3, "init serial\n");
+
+    u16 count = 0;
+    count += detect_serial(0x3f8, 0x0a, count);
+    count += detect_serial(0x2f8, 0x0a, count);
+    count += detect_serial(0x3e8, 0x0a, count);
+    count += detect_serial(0x2e8, 0x0a, count);
+
+    // Equipment word bits 9..11 determing # serial ports
+    u16 eqb = GET_BDA(equipment_list_flags);
+    SET_BDA(equipment_list_flags, (eqb & 0xf1ff) | (count << 9));
+}
+
 static u16
 getComAddr(struct bregs *regs)
 {
     if (regs->dx >= 4) {
-        set_cf(regs, 1);
+        set_fail(regs);
         return 0;
     }
     u16 addr = GET_BDA(port_com[regs->dx]);
     if (! addr)
-        set_cf(regs, 1);
+        set_fail(regs);
     return addr;
 }
 
+// SERIAL - INITIALIZE PORT
 static void
 handle_1400(struct bregs *regs)
 {
@@ -44,9 +78,10 @@ handle_1400(struct bregs *regs)
     outb(regs->al & 0x1F, addr+3);
     regs->ah = inb(addr+5);
     regs->al = inb(addr+6);
-    set_cf(regs, 0);
+    set_success(regs);
 }
 
+// SERIAL - WRITE CHARACTER TO PORT
 static void
 handle_1401(struct bregs *regs)
 {
@@ -67,9 +102,10 @@ handle_1401(struct bregs *regs)
     regs->ah = inb(addr+5);
     if (!timeout)
         regs->ah |= 0x80;
-    set_cf(regs, 0);
+    set_success(regs);
 }
 
+// SERIAL - READ CHARACTER FROM PORT
 static void
 handle_1402(struct bregs *regs)
 {
@@ -91,9 +127,10 @@ handle_1402(struct bregs *regs)
     } else {
         regs->ah = inb(addr+5);
     }
-    set_cf(regs, 0);
+    set_success(regs);
 }
 
+// SERIAL - GET PORT STATUS
 static void
 handle_1403(struct bregs *regs)
 {
@@ -102,21 +139,25 @@ handle_1403(struct bregs *regs)
         return;
     regs->ah = inb(addr+5);
     regs->al = inb(addr+6);
-    set_cf(regs, 0);
+    set_success(regs);
 }
 
 static void
 handle_14XX(struct bregs *regs)
 {
     // Unsupported
-    set_cf(regs, 1);
+    set_fail(regs);
 }
 
 // INT 14h Serial Communications Service Entry Point
-void VISIBLE
+void VISIBLE16
 handle_14(struct bregs *regs)
 {
-    debug_enter(regs);
+    debug_enter(regs, DEBUG_HDL_14);
+    if (! CONFIG_SERIAL) {
+        handle_14XX(regs);
+        return;
+    }
 
     irq_enable();
 
@@ -127,24 +168,57 @@ handle_14(struct bregs *regs)
     case 0x03: handle_1403(regs); break;
     default:   handle_14XX(regs); break;
     }
-    debug_exit(regs);
 }
 
+// XXX - Baud Rate Generator Table
+u8 BaudTable[16] VAR16FIXED(0xe729);
+
 
 /****************************************************************
  * LPT ports
  ****************************************************************/
 
+static u16
+detect_parport(u16 port, u8 timeout, u8 count)
+{
+    // clear input mode
+    outb(inb(port+2) & 0xdf, port+2);
+
+    outb(0xaa, port);
+    if (inb(port) != 0xaa)
+        // Not present
+        return 0;
+    SET_BDA(port_lpt[count], port);
+    SET_BDA(lpt_timeout[count], timeout);
+    return 1;
+}
+
+void
+lpt_setup()
+{
+    if (! CONFIG_LPT)
+        return;
+    dprintf(3, "init lpt\n");
+
+    u16 count = 0;
+    count += detect_parport(0x378, 0x14, count);
+    count += detect_parport(0x278, 0x14, count);
+
+    // Equipment word bits 14..15 determing # parallel ports
+    u16 eqb = GET_BDA(equipment_list_flags);
+    SET_BDA(equipment_list_flags, (eqb & 0x3fff) | (count << 14));
+}
+
 static u16
 getLptAddr(struct bregs *regs)
 {
     if (regs->dx >= 3) {
-        set_cf(regs, 1);
+        set_fail(regs);
         return 0;
     }
     u16 addr = GET_BDA(port_lpt[regs->dx]);
     if (! addr)
-        set_cf(regs, 1);
+        set_fail(regs);
     return addr;
 }
 
@@ -155,7 +229,7 @@ lpt_ret(struct bregs *regs, u16 addr, u16 timeout)
     regs->ah = (val8 ^ 0x48);
     if (!timeout)
         regs->ah |= 0x01;
-    set_cf(regs, 0);
+    set_success(regs);
 }
 
 // INT 17 - PRINTER - WRITE CHARACTER
@@ -172,6 +246,7 @@ handle_1700(struct bregs *regs)
     outb(val8 | 0x01, addr+2); // send strobe
     nop();
     outb(val8 & ~0x01, addr+2);
+    // XXX - implement better timeout code.
     while (((inb(addr+1) & 0x40) == 0x40) && (timeout))
         timeout--;
 
@@ -211,14 +286,18 @@ static void
 handle_17XX(struct bregs *regs)
 {
     // Unsupported
-    set_cf(regs, 1);
+    set_fail(regs);
 }
 
 // INT17h : Printer Service Entry Point
-void VISIBLE
+void VISIBLE16
 handle_17(struct bregs *regs)
 {
-    debug_enter(regs);
+    debug_enter(regs, DEBUG_HDL_17);
+    if (! CONFIG_LPT) {
+        handle_17XX(regs);
+        return;
+    }
 
     irq_enable();
 
@@ -228,5 +307,4 @@ handle_17(struct bregs *regs)
     case 0x02: handle_1702(regs); break;
     default:   handle_17XX(regs); break;
     }
-    debug_exit(regs);
 }