uint8_t serial_recv(uint8_t ch) {
(void) ch;
mutex_lock(&serial_lock);
while(mmio_r32(UART_FR(UART0)) & (1 << 4))
;
register uint8_t t = (uint8_t) mmio_r32(UART_DR(UART0));
mutex_lock(&serial_lock);
return t;
}
void serial_send(uint8_t ch, uint8_t v) {
(void) ch;
mutex_lock(&serial_lock);
while(mmio_r32(UART_FR(UART0)) & (1 << 5))
;
mmio_w32(UART_DR(UART0), v);
mutex_unlock(&serial_lock);
}
int lfb_init() {
int i;
uint32_t* p = (uint32_t*) &lfbio;
for(i = 0; i < sizeof(lfbio); i += sizeof(uint32_t))
mmio_w32(LFBIO_BASE + i, *p++);
mail_send(LFBIO_BASE, LFBIO_BOX);
mail_recv(LFBIO_BOX);
mbd->lfb.width = mmio_r32(LFBIO_BASE + 0);
mbd->lfb.height = mmio_r32(LFBIO_BASE + 4);
mbd->lfb.pitch = mmio_r32(LFBIO_BASE + 16);
mbd->lfb.depth = mmio_r32(LFBIO_BASE + 20);
mbd->lfb.base = mmio_r32(LFBIO_BASE + 32);
mbd->lfb.size = mmio_r32(LFBIO_BASE + 36);
#ifdef DEBUG
memset((void*) mbd->lfb.base, 0xFF, mbd->lfb.size);
#endif
kprintf(LOG "lfb: %dx%dx%d at 0x%x\n", mbd->lfb.width, mbd->lfb.height, mbd->lfb.depth, mbd->lfb.base);
return 0;
}
long timer_getticks() {
return mmio_r32(TIMER_BASE + TIMER_TICK);
}
