Different Turris Omnia HW board revisions contains different MCU. Show type in show_board_info() to easily identify which MCU is populated.
Signed-off-by: Pali Rohár pali@kernel.org --- board/CZ.NIC/turris_omnia/turris_omnia.c | 45 ++++++++++++++++++++++++ 1 file changed, 45 insertions(+)
diff --git a/board/CZ.NIC/turris_omnia/turris_omnia.c b/board/CZ.NIC/turris_omnia/turris_omnia.c index b169abca0956..6fc2018c1cfb 100644 --- a/board/CZ.NIC/turris_omnia/turris_omnia.c +++ b/board/CZ.NIC/turris_omnia/turris_omnia.c @@ -62,13 +62,27 @@ enum mcu_commands { CMD_GET_STATUS_WORD = 0x01, CMD_GET_RESET = 0x09, CMD_WATCHDOG_STATE = 0x0b, + + /* available if STS_FEATURES_SUPPORTED bit set in status word */ + CMD_GET_FEATURES = 0x10, };
enum status_word_bits { + STS_MCU_TYPE_MASK = GENMASK(1, 0), + STS_MCU_TYPE_STM32 = 0, + STS_MCU_TYPE_GD32 = 1, + STS_MCU_TYPE_MKL = 2, + STS_MCU_TYPE_UNKN = 3, + STS_FEATURES_SUPPORTED = BIT(2), CARD_DET_STSBIT = 0x0010, MSATA_IND_STSBIT = 0x0020, };
+/* CMD_GET_FEATURES */ +enum features_e { + FEAT_PERIPH_MCU = BIT(0), +}; + /* * Those values and defines are taken from the Marvell U-Boot version * "u-boot-2013.01-2014_T3.0" @@ -371,6 +385,36 @@ static int omnia_get_ram_size_gb(void) return ram_size; }
+static const char * const omnia_get_mcu_type(void) +{ + static const char * const mcu_types[] = { + [STS_MCU_TYPE_STM32] = "STM32", + [STS_MCU_TYPE_GD32] = "GD32", + [STS_MCU_TYPE_MKL] = "MKL", + [STS_MCU_TYPE_UNKN] = "unknown", + }; + static const char * const mcu_types_with_perip_resets[] = { + [STS_MCU_TYPE_STM32] = "STM32 (with peripheral resets)", + [STS_MCU_TYPE_GD32] = "GD32 (with peripheral resets)", + [STS_MCU_TYPE_MKL] = "MKL (with peripheral resets)", + [STS_MCU_TYPE_UNKN] = "unknown (with peripheral resets)", + }; + u16 stsword, features; + int ret; + + ret = omnia_mcu_read(CMD_GET_STATUS_WORD, &stsword, sizeof(stsword)); + if (ret) + return "unknown"; + + if (stsword & STS_FEATURES_SUPPORTED) { + ret = omnia_mcu_read(CMD_GET_FEATURES, &features, sizeof(features)); + if (ret == 0 && (features & FEAT_PERIPH_MCU)) + return mcu_types_with_perip_resets[stsword & STS_MCU_TYPE_MASK]; + } + + return mcu_types[stsword & STS_MCU_TYPE_MASK]; +} + /* * Define the DDR layout / topology here in the board file. This will * be used by the DDR3 init code in the SPL U-Boot version to configure @@ -688,6 +732,7 @@ int show_board_info(void)
err = turris_atsha_otp_get_serial_number(&version_num, &serial_num); printf("Model: Turris Omnia\n"); + printf(" MCU type: %s\n", omnia_get_mcu_type()); printf(" RAM size: %i MiB\n", omnia_get_ram_size_gb() * 1024); if (err) printf(" Serial Number: unknown\n");