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soc: qcom: mdtloader: Add PAS context aware qcom_mdt_pas_load() function

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Introduce a new PAS context-aware function, qcom_mdt_pas_load(), for
remote processor drivers. This function utilizes the PAS context
pointer returned from qcom_scm_pas_ctx_init() to perform firmware
metadata verification and memory setup via SMC calls.

The qcom_mdt_pas_load() and qcom_mdt_load() functions are largely
similar, but the former is designed for clients using the PAS
context-based data structure. Over time, all users of qcom_mdt_load()
can be migrated to use qcom_mdt_pas_load() for consistency and
improved abstraction.

As the remoteproc PAS driver (qcom_q6v5_pas) has already adopted the
PAS context-based approach, update it to use qcom_mdt_pas_load().

Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Mukesh Ojha <mukesh.ojha@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260105-kvmrprocv10-v10-6-022e96815380@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Mukesh Ojha
2026-01-05 18:52:54 +05:30
committed by Bjorn Andersson
parent b13d8baf56
commit 8a4fcffde6
3 changed files with 46 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
drivers/remoteproc/qcom_q6v5_pas.c
View File

@@ -239,15 +239,9 @@ static int qcom_pas_load(struct rproc *rproc, const struct firmware *fw)
return ret;
}
ret = qcom_mdt_pas_init(pas->dev, pas->dtb_firmware, pas->dtb_firmware_name,
pas->dtb_pas_id, pas->dtb_mem_phys,
pas->dtb_pas_ctx);
if (ret)
goto release_dtb_firmware;
ret = qcom_mdt_load_no_init(pas->dev, pas->dtb_firmware, pas->dtb_firmware_name,
pas->dtb_mem_region, pas->dtb_mem_phys,
pas->dtb_mem_size, &pas->dtb_mem_reloc);
ret = qcom_mdt_pas_load(pas->dtb_pas_ctx, pas->dtb_firmware,
pas->dtb_firmware_name, pas->dtb_mem_region,
&pas->dtb_mem_reloc);
if (ret)
goto release_dtb_metadata;
}
@@ -256,8 +250,6 @@ static int qcom_pas_load(struct rproc *rproc, const struct firmware *fw)
release_dtb_metadata:
qcom_scm_pas_metadata_release(pas->dtb_pas_ctx);
release_dtb_firmware:
release_firmware(pas->dtb_firmware);
return ret;
@@ -305,14 +297,8 @@ static int qcom_pas_start(struct rproc *rproc)
}
}
ret = qcom_mdt_pas_init(pas->dev, pas->firmware, rproc->firmware, pas->pas_id,
pas->mem_phys, pas->pas_ctx);
if (ret)
goto disable_px_supply;
ret = qcom_mdt_load_no_init(pas->dev, pas->firmware, rproc->firmware,
pas->mem_region, pas->mem_phys, pas->mem_size,
&pas->mem_reloc);
ret = qcom_mdt_pas_load(pas->pas_ctx, pas->firmware, rproc->firmware,
pas->mem_region, &pas->mem_reloc);
if (ret)
goto release_pas_metadata;

31
drivers/soc/qcom/mdt_loader.c
View File

@@ -478,5 +478,36 @@ int qcom_mdt_load(struct device *dev, const struct firmware *fw,
}
EXPORT_SYMBOL_GPL(qcom_mdt_load);
/**
* qcom_mdt_pas_load - Loads and authenticates the metadata of the firmware
* (typically contained in the .mdt file), followed by loading the actual
* firmware segments (e.g., .bXX files). Authentication of the segments done
* by a separate call.
*
* The PAS context must be initialized using qcom_scm_pas_context_init()
* prior to invoking this function.
*
* @ctx: Pointer to the PAS (Peripheral Authentication Service) context
* @fw: Firmware object representing the .mdt file
* @firmware: Name of the firmware used to construct segment file names
* @mem_region: Memory region allocated for loading the firmware
* @reloc_base: Physical address adjusted after relocation
*
* Return: 0 on success or a negative error code on failure.
*/
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);
if (ret)
return ret;
return qcom_mdt_load_no_init(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");

10
include/linux/soc/qcom/mdt_loader.h
View File

@@ -23,6 +23,9 @@ 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 +55,13 @@ 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,