aboutsummaryrefslogtreecommitdiff
path: root/src/sys/core.c
blob: 6421c71259e10409771134761b6c219cb413ec9b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
#include <cpu/irq.h>
#include <cpu.h>
#include <drivers/uart.h>
#include <globals.h>
#include <graphics/lfb.h>
#include <lib/kmem.h>
#include <lib/mmu.h>
#include <lib/strings.h>
#include <symbols.h>
#include <sys/core.h>
#include <sys/power.h>
#include <sys/schedule.h>
#include <util/mutex.h>
#include <util/time.h>

// Initialize IRQs
void sysinit(void)
{
	// Initialize System Globals
	stimeh = *(unsigned long*)SYS_TIMER_CHI;
	stimel = *(unsigned long*)SYS_TIMER_CLO;
	*(unsigned long*) SYS_TIMER_C0 = 3000000 + stimeh; // 11 second trigger
	uart_init();
	///...

	// 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
	// Get the frequency
	cntfrq = read_cntfrq();
	// Clear cntv interrupt and set next 1 second timer
	write_cntv_tval(cntfrq/100);
	// 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();

	// Initialize Memory Management Unit
	mmu_init();
	
	// Initialize Mutex Manager
	mutex_init();

	// Start Scheduler
	init_scheduler();
}