#include <cpu/irq.h>
#include <drivers/uart.h>
#include <globals.h>
#include <graphics/drawer.h>
#include <graphics/lfb.h>
#include <lib/mem.h>
#include <lib/q.h>
#include <lib/strings.h>
#include <symbols.h>
#include <sys/core.h>
#include <sys/power.h>
#include <sys/schedule.h>
#include <sys/timer.h>
#include <util/mutex.h>
#include <util/status.h>
#include <util/time.h>

void testlocal(void);
void testnew(void);
void __attribute__((naked)) usr_schedule(void);

// Initialize IRQs
void sysinit(void)
{
	// Clear System Globals
	exe_cnt_m.addr = &exe_cnt;
	exe_cnt_m.pid = NULL_PID;
	rpi_heap_top = &rpi_heap;
	stimeh = *(unsigned long*)SYS_TIMER_CHI;
	stimel = *(unsigned long*)SYS_TIMER_CLO;
	*(unsigned long*) SYS_TIMER_C0 = 60000000 + stimeh; // 60 second trigger
	///...

	// Route GPU interrupts to Core 0
	store32(0x00, GPU_INTERRUPTS_ROUTING);

	// Mask Overrun of UART0
	store32(1<<4, UART0_IMSC);
	// Enable UART GPU IRQ
	store32(1<<25, IRQ_ENABLE2);
	// Enable Timer
	// As an IRQ
	store32(1<<0, IRQ_BASIC_ENABLE);
	// Get the frequency
	cntfrq = read_cntfrq();
	// Clear cntv interrupt and set next 1 second timer
	write_cntv_tval(cntfrq);
	//// Route timer to core0 irq
	//routing_core0cntv_to_core0irq();
	// Route timer to core0 fiq
	routing_core0cntv_to_core0fiq();
	// Enable timer
	enablecntv();
	// Enable system timer
	store32(SYS_TIMER_SC_M0, IRQ_ENABLE1);

	// Graphics Initialize
	lfb_init();
	lfb_showpicture();

	// Start Scheduler
	init_scheduler();

	// Enable IRQ & FIQ
	enableirq();
	enablefiq();

	add_thread(testlocal, 0, 0);
	add_thread(testlocal, 0, 1);
	add_thread(testlocal, 0, 1);
	add_thread(testlocal, 0, 3);
	add_thread(testlocal, 0, 5);
	add_thread(testnew, 0, 4);
	uart_scheduler();
}

void testlocal(void)
{
	uart_string("Ran thread!\n");
	if (scheduler.rthread->pid == 4) {
		add_thread(testlocal, 0, 0);
		//uart_scheduler();
	}
	uart_hexn((unsigned long)getsp());
	uart_string("Exiting thread!\n");
}

void testnew(void)
{
	uart_string("Ran special\n");
	add_thread(testlocal, 0, 0);
	usr_schedule();
	uart_string("Finish special!\n");
}

void __attribute__((naked)) usr_schedule(void)
{
	asm volatile ("svc #2");
}