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arm: mvebu: turris_omnia: Show MCU type in show_board_info()

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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>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Marek Behún <kabel@kernel.org>
This commit is contained in:
Pali Rohár
2022-07-29 13:29:06 +02:00
committed by Stefan Roese
parent aef6839747
commit 336a27ab1d
1 changed files with 45 additions and 0 deletions
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45
board/CZ.NIC/turris_omnia/turris_omnia.c
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@@ -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");