.section .text.boot, "ax"
.global _start

_start:
    add x1, x0, #64         // x1 = BIFramebuffer
    ldr x2, [x1]            // x2 = base
    ldr x3, [x1, #16]       // x3 = width
    ldr x4, [x1, #24]       // x4 = height
    
    mul x5, x3, x4 
    
    mov w6, #0x00FF00
    movk w6, #0x0000, lsl #16 

fill_loop:
    cbz x5, done
    str w6, [x2], #4
    sub x5, x5, #1
    b fill_loop

done:
    b done