Esempio n. 1
0
int main (void)
{
	boot_up();						//Initialize USB port pins and set up the UART
	rprintf("Boot up complete\n");	

	if(IOPIN0 & (1<<23))			//Check to see if the USB cable is plugged in
	{
		main_msc();					//If so, run the USB device driver.
	}
	else{
		rprintf("No USB Detected\n");
	}
	
	//Init SD
	if(sd_raw_init())				//Initialize the SD card
	{
		openroot();					//Open the root directory on the SD card
		rprintf("Root open\n");
		if(root_file_exists(FW_FILE))	//Check to see if the firmware file is residing in the root directory
		{
			rprintf("New firmware found\n");
			load_fw(FW_FILE);			//If we found the firmware file, then program it's contents into memory.
			rprintf("New firmware loaded\n");
		}
	}
	else{
		//Didn't find a card to initialize
		rprintf("No SD Card Detected\n");
		delay_ms(250);
	}
	rprintf("Boot Done. Calling firmware...\n");
	call_firmware();					//Run the new code!

	while(1);
}
Esempio n. 2
0
static int
init_hw(struct tegra_xhci_softc *sc)
{
	int rv;
	uint32_t reg;
	rman_res_t base_addr;

	base_addr = rman_get_start(sc->xhci_softc.sc_io_res);

	/* Enable FPCI access */
	reg = IPFS_RD4(sc, XUSB_HOST_CONFIGURATION);
	reg |= CONFIGURATION_EN_FPCI;
	IPFS_WR4(sc, XUSB_HOST_CONFIGURATION, reg);
	IPFS_RD4(sc, XUSB_HOST_CONFIGURATION);


	/* Program bar for XHCI base address */
	reg = FPCI_RD4(sc, T_XUSB_CFG_4);
	reg &= ~CFG_4_BASE_ADDRESS(~0);
	reg |= CFG_4_BASE_ADDRESS((uint32_t)base_addr >> 15);
	FPCI_WR4(sc, T_XUSB_CFG_4, reg);
	FPCI_WR4(sc, T_XUSB_CFG_5, (uint32_t)((uint64_t)(base_addr) >> 32));

	/* Enable bus master */
	reg = FPCI_RD4(sc, T_XUSB_CFG_1);
	reg |= CFG_1_IO_SPACE;
	reg |= CFG_1_MEMORY_SPACE;
	reg |= CFG_1_BUS_MASTER;
	FPCI_WR4(sc, T_XUSB_CFG_1, reg);

	/* Enable Interrupts */
	reg = IPFS_RD4(sc, XUSB_HOST_INTR_MASK);
	reg |= INTR_IP_INT_MASK;
	IPFS_WR4(sc, XUSB_HOST_INTR_MASK, reg);

	/* Set hysteresis */
	IPFS_WR4(sc, XUSB_HOST_CLKGATE_HYSTERESIS, 128);

	rv = load_fw(sc);
	if (rv != 0)
		return rv;
	return (0);
}