Am Freitag, dem 19.04.2024 um 08:55 -0700 schrieb Daniel Schultz:
From: Yannic Moog y.moog@phytec.de
For all of the functions that access the eeprom_data, make sure these data are valid. Use the valid member of the phytec_eeprom_data struct. This fixes a bug where only the API revision check guarded against accessing rubbish. But if API revision was e.g. 6, eeprom setup failed before, but phytec_get_imx8m_eth would still happily access the data.
Fixes: dc22188cdc8 ("board: phytec: Add common PHYTEC SoM detection")
Signed-off-by: Yannic Moog y.moog@phytec.de Signed-off-by: Daniel Schultz d.schultz@phytec.de
Reviewed-by: Teresa Remmet t.remmet@phytec.de
board/phytec/common/imx8m_som_detection.c | 11 +++++++---- board/phytec/common/phytec_som_detection.c | 10 +++++++--- 2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/board/phytec/common/imx8m_som_detection.c b/board/phytec/common/imx8m_som_detection.c index 7571076a09e..ee34a5b9579 100644 --- a/board/phytec/common/imx8m_som_detection.c +++ b/board/phytec/common/imx8m_som_detection.c @@ -34,7 +34,7 @@ int __maybe_unused phytec_imx8m_detect(struct phytec_eeprom_data *data) data = &eeprom_data; /* We can not do the check for early API revisions */ - if (data->payload.api_rev < PHYTEC_API_REV2) + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return -1; som = data->payload.data.data_api2.som_no; @@ -75,6 +75,9 @@ u8 __maybe_unused phytec_get_imx8m_ddr_size(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) + return PHYTEC_EEPROM_INVAL;
opt = phytec_get_opt(data); if (opt) ddr_id = PHYTEC_GET_OPTION(opt[2]); @@ -99,7 +102,7 @@ u8 __maybe_unused phytec_get_imx8m_spi(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; - if (data->payload.api_rev < PHYTEC_API_REV2) + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return PHYTEC_EEPROM_INVAL; opt = phytec_get_opt(data); @@ -126,7 +129,7 @@ u8 __maybe_unused phytec_get_imx8m_eth(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; - if (data->payload.api_rev < PHYTEC_API_REV2) + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return PHYTEC_EEPROM_INVAL; opt = phytec_get_opt(data); @@ -154,7 +157,7 @@ u8 __maybe_unused phytec_get_imx8mp_rtc(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; - if (data->payload.api_rev < PHYTEC_API_REV2) + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return PHYTEC_EEPROM_INVAL; opt = phytec_get_opt(data); diff --git a/board/phytec/common/phytec_som_detection.c b/board/phytec/common/phytec_som_detection.c index 7913764be0a..5a4cc9e8b02 100644 --- a/board/phytec/common/phytec_som_detection.c +++ b/board/phytec/common/phytec_som_detection.c @@ -128,7 +128,7 @@ void __maybe_unused phytec_print_som_info(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; - if (data->payload.api_rev < PHYTEC_API_REV2) + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return; api2 = &data->payload.data.data_api2; @@ -190,6 +190,9 @@ char * __maybe_unused phytec_get_opt(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; + if (!data->valid) + return NULL;
if (data->payload.api_rev < PHYTEC_API_REV2) opt = data->payload.data.data_api0.opt; else @@ -205,7 +208,7 @@ u8 __maybe_unused phytec_get_rev(struct phytec_eeprom_data *data) if (!data) data = &eeprom_data; - if (data->payload.api_rev < PHYTEC_API_REV2) + if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return PHYTEC_EEPROM_INVAL; api2 = &data->payload.data.data_api2; @@ -217,7 +220,8 @@ u8 __maybe_unused phytec_get_som_type(struct phytec_eeprom_data *data) { if (!data) data = &eeprom_data; - if (data->payload.api_rev < PHYTEC_API_REV2)
+ if (!data->valid || data->payload.api_rev < PHYTEC_API_REV2) return PHYTEC_EEPROM_INVAL; return data->payload.data.data_api2.som_type;