src/rp2_common/pico_platform/platform.c

/*
 * Copyright (c) 2020 Raspberry Pi (Trading) Ltd.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include "pico.h"
#include "hardware/address_mapped.h"
#include "hardware/regs/tbman.h"
#include "hardware/regs/sysinfo.h"

bool running_on_fpga() {
    return !!((*(io_ro_32 *)TBMAN_BASE) & TBMAN_PLATFORM_FPGA_BITS);
}

#define MANUFACTURER_RPI 0x927
#define PART_RP2 0x2

uint8_t rp2040_chip_version() {
    // First register of sysinfo is chip id
    uint32_t chip_id = *((io_ro_32*)(SYSINFO_BASE + SYSINFO_CHIP_ID_OFFSET));
    uint32_t __unused manufacturer = chip_id & SYSINFO_CHIP_ID_MANUFACTURER_BITS;
    uint32_t __unused part = (chip_id & SYSINFO_CHIP_ID_PART_BITS) >> SYSINFO_CHIP_ID_PART_LSB;
    assert(manufacturer == MANUFACTURER_RPI);
    assert(part == PART_RP2);
    // Version 1 == B0/B1
    int version = (chip_id & SYSINFO_CHIP_ID_REVISION_BITS) >> SYSINFO_CHIP_ID_REVISION_LSB;
    return version;
}