Add int1589 support.

Int1589 switches into protected mode for the caller.
Also, consistently use BUILD_BIOS_ADDR/SIZE in GDT macros.

1 files changed, 10 insertions, 4 deletions

diff --git a/src/pic.c b/src/pic.c
index f421bec8..8992a8b5 100644
--- a/src/pic.c
+++ b/src/pic.c
@@ -10,15 +10,14 @@
 #include "config.h" // CONFIG_*
 
 void
-pic_setup(void)
+set_pics(u8 irq0, u8 irq8)
 {
-    dprintf(3, "init pic\n");
     // Send ICW1 (select OCW1 + will send ICW4)
     outb(0x11, PORT_PIC1_CMD);
     outb(0x11, PORT_PIC2_CMD);
     // Send ICW2 (base irqs: 0x08-0x0f for irq0-7, 0x70-0x77 for irq8-15)
-    outb(0x08, PORT_PIC1_DATA);
-    outb(0x70, PORT_PIC2_DATA);
+    outb(irq0, PORT_PIC1_DATA);
+    outb(irq8, PORT_PIC2_DATA);
     // Send ICW3 (cascaded pic ids)
     outb(0x04, PORT_PIC1_DATA);
     outb(0x02, PORT_PIC2_DATA);
@@ -30,6 +29,13 @@ pic_setup(void)
     outb(~0, PORT_PIC2_DATA);
 }
 
+void
+pic_setup(void)
+{
+    dprintf(3, "init pic\n");
+    set_pics(0x08, 0x70);
+}
+
 // Handler for otherwise unused hardware irqs.
 void VISIBLE16
 handle_hwpic1(struct bregs *regs)