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);
}
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);
}