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#include <cpu.h>
#include <cpu/irq.h>
#include <drivers/uart.h>
#include <globals.h>
#include <graphics/drawer.h>
#include <symbols.h>
#include <sys/core.h>
#include <sys/schedule.h>
#include <sys/timer.h>
#include <util/mutex.h>
#include <util/status.h>
#include <util/time.h>
void testfxn(void);
void handle_data(unsigned char);
void c_irq_handler(void)
{
unsigned long source = load32(CORE0_IRQ_SOURCE);
if (source & (1 << 8)) {
if(load32(IRQ_PENDING2) & (1 << 25)) {
if(load32(UART0_MIS) & (1<<4)) {
unsigned long data = load32(UART0_DR);
{
unsigned int x = g_Drawer.x;
unsigned int y = g_Drawer.y;
g_Drawer.x = 0;
g_Drawer.y = 14;
write_hex32(&g_Drawer, data);
g_Drawer.x = x;
g_Drawer.y = y;
}
// Ctrl+T 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;
// Ctrl+R to reset
} else if(data == 0x12) {
_start();
} else {
add_thread(handle_data, (void*)data, 1);
}
return;
}
} 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;
}
} else if (source & (1 << 3)) {
c_timer();
return;
}
return;
}
static unsigned long counter = 0;
unsigned long c_fiq_handler(void)
{
unsigned long source = load32(CORE0_FIQ_SOURCE);
if (source & (1 << 3)) {
c_timer();
counter++;
if (counter % 0x6000 == 0) {
counter = 0;
}
if (counter % 0x30 == 0) {
return 1;
}
return 0;
}
return 0;
}
void handle_data(unsigned char data)
{
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);
} else if (data == 0x61) {
cmd[off] = (char) data;
off += 1;
add_thread(testfxn, 0, 3);
} else if (data == 0x62) {
cmd[off] = (char) data;
off += 1;
add_thread(uart_scheduler, 0, 2);
// 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);
}
void testfxn2(void)
{
uart_string("Ran testfxn2\n");
}
void testfxn(void)
{
unsigned int i = 0x69420;
void* a = malloc(5);
void* b = malloc(3);
void* c = malloc(4);
void* d = malloc(4);
uart_string("Start\n");
add_thread(testfxn2, 0, 0);
delay(0x20000000);
uart_string("Freeing B\n");
free(b);
uart_string("Freeing A\n");
free(a);
uart_string("Freeing C\n");
free(c);
delay(0x20000000);
uart_string("Freeing D\n");
free(d);
delay(0x20000000);
uart_hexn(i);
uart_string("End\n");
}
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