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added option to disable auto-boot sequence

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stnolting 2020-09-17 18:59:33 +02:00
parent 8e468756ea
commit ab55d54882
1 changed files with 11 additions and 4 deletions
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15
sw/bootloader/bootloader.c
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@ -1,15 +1,15 @@
// #################################################################################################
// # << NEORV32 - Bootloader >> #
// # ********************************************************************************************* #
// # THE BOOTLOADER SHOULD BE COMPILED USING THE BASE ISA ONLY (rv32i or rv32e)! #
// # THE BOOTLOADER SHOULD BE COMPILED USING ONLY THE BASE ISA (rv32i or rv32e)! #
// # ********************************************************************************************* #
// # Boot from (internal) instruction memory, UART or SPI Flash. #
// # #
// # UART configuration: 8N1 at 19200 baud #
// # Boot Flash: 8-bit SPI, 24-bit addresses (like Micron N25Q032A) @ neorv32.spi_csn_o(0) #
// # neorv32.gpio_o(0) is used as high-active status LED. #
// # neorv32.gpio_o(0) is used as high-active status LED (can be disabled via STATUS_LED_EN). #
// # #
// # Auto boot sequence after timeout: #
// # Auto boot sequence (can be disabled via AUTOBOOT_EN) after timeout (via AUTOBOOT_TIMEOUT): #
// # -> Try booting from SPI flash at spi_csn_o(0). #
// # -> Permanently light up status led and freeze if SPI flash booting attempt fails. #
// # ********************************************************************************************* #
@ -64,6 +64,8 @@
#define BAUD_RATE (19200)
/** Time until the auto-boot sequence starts (in seconds) */
#define AUTOBOOT_TIMEOUT 8
/** Enable auto-boot sequence if != 0 */
#define AUTOBOOT_EN (1)
/** Set to 0 to disable bootloader status LED */
#define STATUS_LED_EN (1)
/** Bootloader status LED at GPIO output port */
@ -239,6 +241,7 @@ int main(void) {
// ------------------------------------------------
// Auto boot sequence
// ------------------------------------------------
#if (AUTOBOOT_EN != 0)
neorv32_uart_print("\n\nAutoboot in "xstr(AUTOBOOT_TIMEOUT)"s. Press key to abort.\n");
uint64_t timeout_time = neorv32_mtime_get_time() + (uint64_t)(AUTOBOOT_TIMEOUT * clock_speed);
@ -252,6 +255,10 @@ int main(void) {
}
}
neorv32_uart_print("Aborted.\n\n");
#else
neorv32_uart_print("\n\n");
#endif
print_help();
@ -276,7 +283,7 @@ int main(void) {
else if (c == 'u') { // get executable via UART
get_exe(EXE_STREAM_UART);
}
else if (c == 's') { // program EEPROM from RAM
else if (c == 's') { // program flash from memory (IMEM)
save_exe();
}
else if (c == 'l') { // get executable from flash