b reset
    b hang
    b hang
    b hang

    b hang
    b hang
    b hang
    b hang

    b hang
    b hang
    b hang
    b hang

    b hang
    b hang
    b hang
    b hang

    TIMER_CR     EQU 8   ; Control Register, TimerXControl
    TIMER_INTCLR EQU 0xC ; Interrupt Clear Register, TimerXIntClr
reset:
    mov sp, #0x20000
;****************************************
;*         Enable Timer0 and IRQs       *
;****************************************
    ldr r0, [TIMER_COUNT]
    str r0, [TIMER_BASE]
    ldr r1, [TIMER_BASE]
    add r1, TIMER_INTCLR
    mov r2, #0
    str r2, [r1]

    mov r0, #0xE2 ; Timer Enable, Periodic Mode, IRQ ON, Prescale = 0, 32 bit, Wrapping Mode
    ldr r1, [TIMER_BASE]
    add r1, TIMER_CR
    str r0, [r1]

    mrs r0, cpsr
    bic r0, r0, #0x80 ; Clear IRQ Disable
    msr cpsr_c, r0

    b  mainloop
    TIMER_BASE: dd 0x101E2000
    TIMER_COUNT: dd 1000000
hang:
    b hang
;****************************************
;*            Kernel Mainloop           *
;****************************************
mainloop:
    ldr r1, [pc, 4]
    bl uart_put32
    b mainloop
    dd 0x50505050
;****************************************
;* UART Write 32 Bit Value              *
;* Input: R1 Value to be written        *
;* Output: None                         *
;****************************************
uart_put32:
    ldr r0, [pc, 4]   ; PC + 16
    str r1, [r0]
    bx lr
    dd 0x101f1000