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feat(bootloader): add option to disable JTAG I/O when boot

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This commit is contained in:
Dong Heng
2020-03-11 16:07:09 +08:00
parent 77552dda7f
commit d36034e554
3 changed files with 31 additions and 0 deletions
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9
components/bootloader/Kconfig.projbuild
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@@ -10,6 +10,15 @@ config BOOTLOADER_INIT_SPI_FLASH
If your system bootloader is based on v3.0, the option must not be enable, because the v3.0 bootloader don't support
this function.
config BOOTLOADER_DISABLE_JTAG_IO
bool "Bootloader disable JTAG I/O"
default n
help
Enable this option, when SoC brings up and bootloader initializes hardware, it will
disable JTAG's I/O and set these GPIOs to be normal I/O with inputting mode.
If users use JTAG to help develop, please disable this option.
choice LOG_BOOTLOADER_LEVEL
bool "Bootloader log verbosity"
default LOG_BOOTLOADER_LEVEL_INFO

11
components/bootloader_support/src/bootloader_init.c
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@@ -613,6 +613,17 @@ esp_err_t bootloader_init()
static esp_err_t bootloader_main()
{
#ifdef CONFIG_BOOTLOADER_DISABLE_JTAG_IO
/* Set GPIO 12-15 to be normal GPIO */
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDI_U, FUNC_GPIO12);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTCK_U, FUNC_GPIO13);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTMS_U, FUNC_GPIO14);
PIN_FUNC_SELECT(PERIPHS_IO_MUX_MTDO_U, FUNC_GPIO15);
/* Set GPIO 12-15 to be input mode */
GPIO_REG_WRITE(GPIO_ENABLE_W1TC_ADDRESS, BIT12 | BIT13 | BIT14 | BIT15);
#endif
uart_console_configure();
esp_image_header_t fhdr;