mirror of
https://github.com/RIOT-OS/RIOT.git
synced 2024-12-29 04:50:03 +01:00
69 lines
1.9 KiB
C
69 lines
1.9 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2023 Benjamin Valentin
|
||
|
|
*
|
||
|
|
* This file is subject to the terms and conditions of the GNU Lesser General
|
||
|
|
* Public License v2.1. See the file LICENSE in the top level directory for more
|
||
|
|
* details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @ingroup cpu_esp32
|
||
|
|
* @{
|
||
|
|
*
|
||
|
|
* @file
|
||
|
|
* @brief Trigger reset to the bootloader stored in the internal boot ROM
|
||
|
|
* memory.
|
||
|
|
*
|
||
|
|
* This will start the USB/UART bootloader.
|
||
|
|
*
|
||
|
|
* @author Benjamin Valentin <benpicco@googlemail.com>
|
||
|
|
* @author Gunar Schorcht <gunar@schorcht.net>
|
||
|
|
*
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "driver/periph_ctrl.h"
|
||
|
|
#include "rom/usb/chip_usb_dw_wrapper.h"
|
||
|
|
#include "rom/usb/usb_persist.h"
|
||
|
|
#include "soc/rtc_cntl_reg.h"
|
||
|
|
#include "soc/rtc_cntl_struct.h"
|
||
|
|
#include "soc/soc_caps.h"
|
||
|
|
#if SOC_USB_SERIAL_JTAG_SUPPORTED
|
||
|
|
#include "soc/usb_serial_jtag_reg.h"
|
||
|
|
#include "soc/usb_serial_jtag_struct.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include "periph/pm.h"
|
||
|
|
|
||
|
|
static void _reconfigure_usb(void)
|
||
|
|
{
|
||
|
|
#ifdef CPU_FAM_ESP32S3
|
||
|
|
/* disable USB OTG controller */
|
||
|
|
periph_module_reset(PERIPH_USB_MODULE);
|
||
|
|
periph_module_disable(PERIPH_USB_MODULE);
|
||
|
|
|
||
|
|
/* allow USB Serial/JTAG to use the internal USB transceiver */
|
||
|
|
RTCCNTL.usb_conf.sw_usb_phy_sel = 0;
|
||
|
|
/* control the internal USB transceiver selection via hardware (efuse) */
|
||
|
|
RTCCNTL.usb_conf.sw_hw_usb_phy_sel = 0;
|
||
|
|
/* don't enable USB transceiver function */
|
||
|
|
RTCCNTL.usb_conf.usb_pad_enable = 0;
|
||
|
|
|
||
|
|
/* select internal PHY for USB Serial/JTAG */
|
||
|
|
USB_SERIAL_JTAG.conf0.phy_sel = 0;
|
||
|
|
/* enable USB pad function */
|
||
|
|
USB_SERIAL_JTAG.conf0.usb_pad_enable = 1;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
void __attribute__((weak)) usb_board_reset_in_bootloader(void)
|
||
|
|
{
|
||
|
|
/* If we are here, the USB port is not connected to the Serial/JTAG interface.
|
||
|
|
We have to re-configure it back to this mode first. */
|
||
|
|
_reconfigure_usb();
|
||
|
|
|
||
|
|
chip_usb_set_persist_flags(USBDC_PERSIST_ENA);
|
||
|
|
REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT);
|
||
|
|
pm_reboot();
|
||
|
|
}
|