// =============================================================================
// boot_MonitorDoMonitoring
// -----------------------------------------------------------------------------
/// This function actually implement the monitoring operations.
// =============================================================================
PROTECTED VOID boot_MonitorDoMonitoring(VOID)
{
BOOT_HOST_USB_MONITOR_CTX_T hostUsbContext;
BOOT_MONITOR_OP_STATUS_T monitorLoopStatus = BOOT_MONITOR_OP_STATUS_NONE;
hostUsbContext.MonitorMode = BOOT_HOST_USB_MODE_BOOT;
// Get current time to calculate time-out exit
UINT32 enterTime = hwp_timer->HWTimer_CurVal;
// Configure the IOMux to let the PXTS exit.
#ifdef BOOT_WITH_IOMUX_PROFILE
hwp_debugPort->Debug_Port_Mode |= DEBUG_PORT_PXTS_EXL_CLOCK_POL
| DEBUG_PORT_MODE_CONFIG_MODE_PXTS;
hwp_debugPort->Pxts_Exl_Cfg |= DEBUG_PORT_ENABLE_PXTS_TAG(1<<HAL_DBG_PXTS_BOOT);
hwp_configRegs->Alt_mux_select &= ~CFG_REGS_DEBUG_PORT_MASK;
#endif // BOOT_WITH_IOMUX_PROFILE
BOOT_PROFILE_PULSE(BOOT_POWER_STATE_DONE);
// Initializes the uart baudrate detection variables.
g_bootUartMonitorBrDetected = FALSE;
g_bootUartMonitorBaudRate = 0;
// We enter the monitor if access is forced through
// boot mode or there is no code on CS0.
if ((g_bootBootMode & BOOT_MODE_FORCE_MONITOR) ||
*(BOOT_FLASH_PROGRAMMED_PATTERN_ADDRESS) != BOOT_FLASH_PROGRAMMED_PATTERN)
{
BOOT_PROFILE_PULSE(BOOT_ENTER_MONITOR_LOOP);
// If we are out of reset, set the status to 'waiting for a command'.
// Otherwise, keep the status as it was probably set by the boot sector
// and carries a specific meaning.
if (hwp_debugHost->p2h_status == BOOT_HST_STATUS_NONE)
{
hwp_debugHost->p2h_status = BOOT_HST_STATUS_WAITING_FOR_COMMAND;
}
// Open the UART monitor, only when the boot mode requires it.
if (g_bootBootMode & BOOT_MODE_UART_MONITOR_ENABLE)
{
boot_UartMonitorOpen();
}
// Open the USB monitor, except when to boot mode prevents it.
if (!(g_bootBootMode & BOOT_MODE_USB_MONITOR_DISABLE))
{
boot_UsbInitVar();
boot_HostUsbClockEnable();
boot_UsbOpen(boot_HostUsbDeviceCallback);
// We never exit this function, so the hostUsbContext
// is valid (On the stack).
boot_HostUsbOpen(&hostUsbContext, 0, 0);
}
while (1)
{
// We are in the monitor. We are indefinitely trying to
// execute command from any (available) monitor. This
// is done through a dedicated function per monitor
// (boot_HstMonitor for the host monitor,
// boot_UartMonitor for the uart monitor,
// boot_HostUsbRecv for the USB monitor.)
// When any of them receive a "Exit the monitor"
// BOOT_HST_MONITOR_END_CMD command, it
// returns BOOT_MONITOR_OP_STATUS_EXIT, and we check that to leave the
// monitor loop.
monitorLoopStatus = BOOT_MONITOR_OP_STATUS_NONE;
// Host monitor always enabled.
monitorLoopStatus |= boot_HstMonitor();
// Process the UART monitor, only when to boot mode requires it.
if (g_bootBootMode & BOOT_MODE_UART_MONITOR_ENABLE)
{
monitorLoopStatus |= boot_UartMonitor();
}
// Process the USB monitor, except when to boot mode prevents it.
if (!(g_bootBootMode & BOOT_MODE_USB_MONITOR_DISABLE))
{
// Receive a USB packet, parse it and execute
// the command if any.
// Return BOOT_MONITOR_OP_STATUS_EXIT if the exit monitor command is received.
monitorLoopStatus |= boot_HostUsbRecv();
// If a read command was received, send a packet
// with the read data.
boot_HostUsbSend();
}
// Check the status returned by the monitors.
if (monitorLoopStatus & BOOT_MONITOR_OP_STATUS_EXIT)
{
// Exit the monitoring loop
break;
}
// Check we received a command, and update the timeout
// FIXME Fixe here to implement the behaviour about the timeout
// (No command or after the command)
if (monitorLoopStatus & BOOT_MONITOR_OP_STATUS_CONTINUE)
{
// Update the timeout or set a variable bypassing the
// timeout stuff.
enterTime = hwp_timer->HWTimer_CurVal;
}
if (monitorLoopStatus == BOOT_MONITOR_OP_STATUS_NONE)
{
// No command received.
// Exit the loop if valid flash and timeout.
if ((*(BOOT_FLASH_PROGRAMMED_PATTERN_ADDRESS) == BOOT_FLASH_PROGRAMMED_PATTERN)
&& ((hwp_timer->HWTimer_CurVal - enterTime) > (BOOT_IDLE_TIMEOUT*16384)))
{
// If no command was sent, we have to tell we're not ready
// anymore to handle new commands.
hwp_debugHost->p2h_status = BOOT_HST_STATUS_NONE;
break;
}
}
}
// Close the UART monitor, only when the boot mode requires it.
if (g_bootBootMode & BOOT_MODE_UART_MONITOR_ENABLE)
{
boot_UartMonitorClose();
}
// Close the USB monitor, except when to boot mode prevents it.
if (!(g_bootBootMode & BOOT_MODE_USB_MONITOR_DISABLE))
{
boot_HostUsbClose();
boot_UsbClose();
}
}
}
PUBLIC UINT8 hal_HostUsbRecv(VOID)
{
return boot_HostUsbSend();
}