rom_reboot() function

Reboot using the watchdog Resets the chip and uses the watchdog facility to restart. The delay_ms is the millisecond delay before the reboot occurs. Note: by default this method is asynchronous (unless NO_RETURN_ON_SUCCESS is set - see below), so the method will return and the reboot will happen this many milliseconds later. The flags field contains one of the following values: REBOOT_TYPE_NORMAL - reboot into the normal boot path. REBOOT_TYPE_BOOTSEL - reboot into BOOTSEL mode. p0 - the GPIO number to use as an activity indicator (enabled by flag in p1). p1 - a set of flags: 0x01 : DISABLE_MSD_INTERFACE - Disable the BOOTSEL USB drive (see >) 0x02 : DISABLE_PICOBOOT_INTERFACE - Disable the {picoboot} interface (see >). 0x10 : GPIO_PIN_ACTIVE_LOW - The GPIO in p0 is active low. 0x20 : GPIO_PIN_ENABLED - Enable the activity indicator on the specified GPIO. REBOOT_TYPE_RAM_IMAGE - reboot into an image in RAM. The region of RAM or XIP RAM is searched for an image to run. This is the type of reboot used when a RAM UF2 is dragged onto the BOOTSEL USB drive. p0 - the region start address (word-aligned). p1 - the region size (word-aligned). REBOOT_TYPE_FLASH_UPDATE - variant of REBOOT_TYPE_NORMAL to use when flash has been updated. This is the type of reboot used after dragging a flash UF2 onto the BOOTSEL USB drive. p0 - the address of the start of the region of flash that was updated. If this address matches the start address of a partition or slot, then that partition or slot is treated preferentially during boot (when there is a choice). This type of boot facilitates TBYB and version downgrades. REBOOT_TYPE_PC_SP - reboot to a specific PC and SP. Note: this is not allowed in the ARM-NS variant. p0 - the initial program counter (PC) to start executing at. This must have the lowest bit set for Arm and clear for RISC-V p1 - the initial stack pointer (SP). All of the above, can have optional flags ORed in: REBOOT_TO_ARM - switch both cores to the Arm architecture (rather than leaving them as is). The call will fail with BOOTROM_ERROR_INVALID_STATE if the Arm architecture is not supported. REBOOT_TO_RISCV - switch both cores to the RISC-V architecture (rather than leaving them as is). The call will fail with BOOTROM_ERROR_INVALID_STATE if the RISC-V architecture is not supported. NO_RETURN_ON_SUCCESS - the watchdog h/w is asynchronous. Setting this bit forces this method not to return if the reboot is successfully initiated.