Add a PAS context-aware qcom_mdt_pas_load() function for remote processor drivers, which can use the context pointer returned from qcom_scm_pas_ctx_init() to perform metadata verification and memory setup via SMC calls.
The qcom_mdt_pas_load() and qcom_mdt_load() functions are almost similar. Clients using the PAS context-based data structure can adopt qcom_mdt_pas_load(), and in the future, all users of qcom_mdt_load() could be migrated to use qcom_mdt_pas_load() instead. Signed-off-by: Mukesh Ojha <[email protected]> --- drivers/soc/qcom/mdt_loader.c | 29 +++++++++++++++++++++++++++++ include/linux/soc/qcom/mdt_loader.h | 11 +++++++++++ 2 files changed, 40 insertions(+) diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c index a5c80d4fcc36..31855836b251 100644 --- a/drivers/soc/qcom/mdt_loader.c +++ b/drivers/soc/qcom/mdt_loader.c @@ -486,5 +486,34 @@ int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw, } EXPORT_SYMBOL_GPL(qcom_mdt_load_no_init); +/** + * qcom_mdt_pas_load() - load the firmware which header is loaded as fw + * + * Client should initialize the PAS context with qcom_scm_pas_context_init() + * before calling this function. + * + * @ctx: PAS context pointer + * @fw: firmware object for the mdt file + * @firmware: name of the firmware, for construction of segment file names + * @mem_region: allocated memory region to load firmware into + * @reloc_base: adjusted physical address after relocation + * + * Returns 0 on success, negative errno otherwise. + */ +int qcom_mdt_pas_load(struct qcom_scm_pas_context *ctx, const struct firmware *fw, + const char *firmware, void *mem_region, phys_addr_t *reloc_base) +{ + int ret; + + ret = qcom_mdt_pas_init(ctx->dev, fw, firmware, ctx->pas_id, ctx->mem_phys, + ctx->metadata); + if (ret) + return ret; + + return __qcom_mdt_load(ctx->dev, fw, firmware, mem_region, ctx->mem_phys, + ctx->mem_size, reloc_base); +} +EXPORT_SYMBOL_GPL(qcom_mdt_pas_load); + MODULE_DESCRIPTION("Firmware parser for Qualcomm MDT format"); MODULE_LICENSE("GPL v2"); diff --git a/include/linux/soc/qcom/mdt_loader.h b/include/linux/soc/qcom/mdt_loader.h index 8ea8230579a2..2832e0717729 100644 --- a/include/linux/soc/qcom/mdt_loader.h +++ b/include/linux/soc/qcom/mdt_loader.h @@ -11,6 +11,7 @@ struct device; struct firmware; struct qcom_scm_pas_metadata; +struct qcom_scm_pas_context; #if IS_ENABLED(CONFIG_QCOM_MDT_LOADER) @@ -23,6 +24,9 @@ int qcom_mdt_load(struct device *dev, const struct firmware *fw, phys_addr_t mem_phys, size_t mem_size, phys_addr_t *reloc_base); +int qcom_mdt_pas_load(struct qcom_scm_pas_context *ctx, const struct firmware *fw, + const char *firmware, void *mem_region, phys_addr_t *reloc_base); + int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw, const char *fw_name, void *mem_region, phys_addr_t mem_phys, size_t mem_size, @@ -52,6 +56,13 @@ static inline int qcom_mdt_load(struct device *dev, const struct firmware *fw, return -ENODEV; } +static inline int qcom_mdt_pas_load(struct qcom_scm_pas_context *ctx, + const struct firmware *fw, const char *firmware, + void *mem_region, phys_addr_t *reloc_base) +{ + return -ENODEV; +} + static inline int qcom_mdt_load_no_init(struct device *dev, const struct firmware *fw, const char *fw_name, void *mem_region, -- 2.50.1
