Misc updates.
Try to fix up make dependency tracking by including a "null.c" file.
Initialize hard disk tables during post.
Move RTC handlers from system.c to clock.c
Use a macro to init stacks in romlayout.S
Add C-Code stats to buildrom step.
diff --git a/src/clock.c b/src/clock.c
index f89b391..6895876 100644
--- a/src/clock.c
+++ b/src/clock.c
@@ -280,6 +280,60 @@
eoi_master_pic();
}
+// Set Interval requested.
+static void
+handle_158300(struct bregs *regs)
+{
+ if (GET_BDA(rtc_wait_flag) & RWS_WAIT_PENDING) {
+ // Interval already set.
+ DEBUGF("int15: Func 83h, failed, already waiting.\n" );
+ handle_ret(regs, RET_EUNSUPPORTED);
+ }
+ // Interval not already set.
+ SET_BDA(rtc_wait_flag, RWS_WAIT_PENDING); // Set status byte.
+ u32 v = (regs->es << 16) | regs->bx;
+ SET_BDA(ptr_user_wait_complete_flag, v);
+ v = (regs->dx << 16) | regs->cx;
+ SET_BDA(user_wait_timeout, v);
+
+ // Unmask IRQ8 so INT70 will get through.
+ u8 irqDisable = inb(PORT_PIC2_DATA);
+ outb(irqDisable & ~PIC2_IRQ8, PORT_PIC2_DATA);
+ // Turn on the Periodic Interrupt timer
+ u8 bRegister = inb_cmos(CMOS_STATUS_B);
+ outb_cmos(CMOS_STATUS_B, bRegister | CSB_EN_ALARM_IRQ);
+
+ set_cf(regs, 0); // XXX - no set ah?
+}
+
+// Clear interval requested
+static void
+handle_158301(struct bregs *regs)
+{
+ SET_BDA(rtc_wait_flag, 0); // Clear status byte
+ // Turn off the Periodic Interrupt timer
+ u8 bRegister = inb_cmos(CMOS_STATUS_B);
+ outb_cmos(CMOS_STATUS_B, bRegister & ~CSB_EN_ALARM_IRQ);
+ set_cf(regs, 0); // XXX - no set ah?
+}
+
+static void
+handle_1583XX(struct bregs *regs)
+{
+ regs->al--;
+ handle_ret(regs, RET_EUNSUPPORTED);
+}
+
+void
+handle_1583(struct bregs *regs)
+{
+ switch (regs->al) {
+ case 0x00: handle_158300(regs); break;
+ case 0x01: handle_158301(regs); break;
+ default: handle_1583XX(regs); break;
+ }
+}
+
// int70h: IRQ8 - CMOS RTC
void VISIBLE
handle_70(struct bregs *regs)
