diff options
| -rw-r--r-- | mediatek_i2c_spi.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/mediatek_i2c_spi.c b/mediatek_i2c_spi.c index 5757f31e..4929fbf9 100644 --- a/mediatek_i2c_spi.c +++ b/mediatek_i2c_spi.c @@ -464,9 +464,46 @@ static const struct spi_master spi_master_i2c_mediatek = { .probe_opcode = default_spi_probe_opcode, }; +static int get_params(bool *allow_brick) +{ + char *brick_str = NULL; + int ret = 0; + + *allow_brick = false; /* Default behaviour is to bail. */ + brick_str = extract_programmer_param_str("allow_brick"); + if (brick_str) { + if (!strcmp(brick_str, "yes")) { + *allow_brick = true; + } else { + msg_perr("%s: Incorrect param format, allow_brick=yes.\n", __func__); + ret = SPI_GENERIC_ERROR; + } + } + free(brick_str); + + return ret; +} + static int mediatek_init(void) { int ret; + bool allow_brick; + + if (get_params(&allow_brick)) + return SPI_GENERIC_ERROR; + + /* + * TODO: Once board_enable can facilitate safe i2c allow listing + * then this can be removed. + */ + if (!allow_brick) { + msg_perr("%s: For i2c drivers you must explicitly 'allow_brick=yes'. ", __func__); + msg_perr("There is currently no way to determine if the programmer works on a board " + "as i2c device address space can be overloaded. Set 'allow_brick=yes' if " + "you are sure you know what you are doing.\n"); + return SPI_GENERIC_ERROR; + } + int fd = i2c_open_from_programmer_params(ISP_PORT, 0); if (fd < 0) { msg_perr("Failed to open i2c\n"); |