From 91741716578c1dea150fa7b4e6ac46553121447f Mon Sep 17 00:00:00 2001
From: Christian Cunningham <cc@localhost>
Date: Sun, 23 Jan 2022 13:22:39 -0700
Subject: Trimmed IRQ handler

---
 src/cpu/irq.c | 104 +++-------------------------------------------------------
 1 file changed, 4 insertions(+), 100 deletions(-)

diff --git a/src/cpu/irq.c b/src/cpu/irq.c
index fd0cbd5..1a743ff 100644
--- a/src/cpu/irq.c
+++ b/src/cpu/irq.c
@@ -78,12 +78,8 @@ void c_irq_handler(void)
 							cmd[off] = (char) data;
 							off += 1;
 							release_mutex(&exe_cnt_m, SYS_PID);
-						// New Task Case
-						} else if (data == 0x61) {
-							cmd[off] = (char) data;
-							off += 1;
-							add_thread(localtest, 0, 0);
-						} else if (data == 0x62) {
+						// heap Info
+						} else if (data == 0x69) {
 							cmd[off] = (char) data;
 							off += 1;
 							add_thread(heap_info, 0, 5);
@@ -137,98 +133,7 @@ static unsigned long counter = 0;
 unsigned long c_fiq_handler(void)
 {
 	unsigned long source = load32(CORE0_FIQ_SOURCE);
-	if (source & (1 << 8)) {
-		if(load32(IRQ_PENDING2) & (1 << 25)) {
-			if(load32(UART0_MIS) & (1<<4)) {
-				unsigned long data = load32(UART0_DR);
-				// Ctrl+Tab to toggle timer
-				if(data == 0x14) {
-					unsigned long timer_status;
-					asm volatile("mrc p15, 0, %0, c14, c3, 1" : "=r"(timer_status));
-					unsigned int x = g_Drawer.x;
-					unsigned int y = g_Drawer.y;
-					g_Drawer.x = 0;
-					g_Drawer.y = 5;
-					write_string(&g_Drawer, "TIMER: ");
-					if(timer_status == 0) {
-						cntfrq = read_cntfrq();
-						write_cntv_tval(cntfrq/CPS);
-						enablecntv();
-						write_cstring(&g_Drawer, "Enabled ", 0x00FF00);
-					} else {
-						disablecntv();
-						write_cstring(&g_Drawer, "Disabled", 0xFF0000);
-					}
-					g_Drawer.x = x;
-					g_Drawer.y = y;
-				} else {
-					unsigned long off = cmdidx;
-					if (off < 2048) {
-						// Newline Case
-						if (data == 0x0D) {
-							for(int i = off; i>=0;i--)
-								cmd[i] = 0x0;
-							off = 0;
-						// Backspace Case
-						} else if (data == 0x08 || data == 0x7F) {
-							if (off > 0) {
-								off -= 1;
-							}
-							cmd[off] = 0x0;
-						// Lock Case
-						} else if (data == 0x6C) {
-							cmd[off] = (char) data;
-							off += 1;
-							lock_mutex(&exe_cnt_m, SYS_PID);
-						// Release Case
-						} else if (data == 0x72) {
-							cmd[off] = (char) data;
-							off += 1;
-							release_mutex(&exe_cnt_m, SYS_PID);
-						// New Task Case
-						} else if (data == 0x61) {
-							cmd[off] = (char) data;
-							off += 1;
-							//_start(); // Trigger reset
-							//heap_info_u();
-						// Else output
-						} else {
-							cmd[off] = (char) data;
-							off += 1;
-						}
-					} else if (off == 2048) {
-						if (data == 0x0D) {
-							for(int i = off; i>=0;i--)
-								cmd[i] = 0x0;
-							off = 0;
-						} else if (data == 0x08 || data == 0x7F) {
-							if (off > 0) {
-								off -= 1;
-							}
-							cmd[off] = 0x0;
-						}
-					}
-					cmdidx = off;
-				}
-				g_Drawer.x = 0;
-				g_Drawer.y = 7;
-				for(int i = 0; i < 128; i++)
-					write_char(&g_Drawer, ' ');
-				g_Drawer.x = 0;
-				g_Drawer.y = 7;
-				write_string(&g_Drawer, "> ");
-				write_string(&g_Drawer, cmd);
-				return 0;
-			}
-		} else if (*(unsigned long*)SYS_TIMER_CS == SYS_TIMER_SC_M0) {
-			volatile unsigned long* timer_cs = (unsigned long*)SYS_TIMER_CS;
-			volatile unsigned long* timer_chi = (unsigned long*)SYS_TIMER_CHI;
-			volatile unsigned long* nexttime = (unsigned long*)SYS_TIMER_C0;
-			*timer_cs = SYS_TIMER_SC_M0;
-			//*nexttime = *timer_chi + 60000000;
-			*nexttime = *timer_chi + 10000;
-		}
-	} else if (source & (1 << 3)) {
+	if (source & (1 << 3)) {
 		c_timer();
 		counter++;
 		if (counter % 0x100 == 0) {
@@ -236,8 +141,7 @@ unsigned long c_fiq_handler(void)
 		} else if (counter % 0x6000 == 0) {
 			counter = 0;
 		}
-		if (counter % 0x60 == 0) {
-			//uart_scheduler();
+		if (counter % 0x30 == 0) {
 			return 1;
 		} 
 		return 0;
-- 
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