kernel/linux.git/drivers/soc/qcom/mdt_loader.c, branch v6.4

firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/

2023-02-09T03:15:16+00:00

Move include/linux/qcom_scm.h to include/linux/firmware/qcom/qcom_scm.h. This removes 1 of a few remaining Qualcomm-specific headers into a more approciate subdirectory under include/. Suggested-by: Bjorn Andersson Signed-off-by: Elliot Berman Reviewed-by: Guru Das Srinagesh Acked-by: Mukesh Ojha Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20230203210956.3580811-1-quic_eberman@quicinc.com

soc: qcom: correct kerneldoc

2022-06-26T03:05:31+00:00

Correct kerneldoc warnings like: drivers/soc/qcom/mdt_loader.c:126: warning: Function parameter or member 'fw_name' not described in 'qcom_mdt_read_metadata' Signed-off-by: Krzysztof Kozlowski Reviewed-by: Stephen Boyd Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220519073301.7072-2-krzysztof.kozlowski@linaro.org

soc: qcom: mdt_loader: Fix split-firmware condition

2022-02-23T19:13:12+00:00

The updated condition checking if a segment can be found in the loaded firmware blob, or need to be loaded from a separate file, incorrectly classifies segments that ends at the end of the loaded blob. The result is that the mdt loader attempts to load the segment from a separate file. Correct the conditional to use the loaded segment instead. Fixes: ea90330fa329 ("soc: qcom: mdt_loader: Extend check for split firmware") Signed-off-by: Bjorn Andersson Reviewed-by: Vinod Koul Link: https://lore.kernel.org/r/20220215034819.1209367-1-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Extract PAS operations

2022-02-04T03:54:48+00:00

Rather than passing a boolean to indicate if the PAS operations should be performed from within __mdt_load(), extract them to their own helper function. This will allow clients to invoke this directly, with some qcom_scm_pas_metadata context that they later needs to release, without further having to complicate the prototype of qcom_mdt_load(). Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-9-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Always invoke PAS mem_setup

2022-02-03T21:32:30+00:00

After spelunking various old kernel trees no finds has been found indicating that the PAS mem_setup call should actually be made conditional on the image being relocatable. Group the two PAS operations together, to facilitate splitting them out in a following patch. Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-8-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Reorder parts of __qcom_mdt_load()

2022-02-03T21:32:30+00:00

Move the traversal of the program headers to the start of the function, to make sure that min_ and max_addr are in scope as the call to qcom_scm_pas_mem_setup() is moved in the next commit. Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-7-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Extend check for split firmware

2022-02-03T21:32:30+00:00

Some of the Qualcomm SM8450 firmware files are padded such that the start of the first segment falls within the .mdt file but the segment to be loaded is stored as a separate .bNN file. Extend the condition to only attempt to read a segment inline if the entire segment would be available. Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-6-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Allow hash to reside in any segment

2022-02-03T21:32:30+00:00

It's been observed that some firmware found on Qualcomm SM8450 devices carries the hash segment as the last segment in the ELF. Extend the support to allow picking the hash from any segment in the MDT/MBN. Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-5-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Allow hash segment to be split out

2022-02-03T21:32:30+00:00

It's been observed that some firmware found in a Qualcomm SM8450 device has the hash table in a separate .bNN file. Use the newly extracted helper function to load this segment from the separate file, if it's determined that the hashes are not part of the already loaded firmware. In order to do this, the function needs access to the firmware basename and to provide more useful error messages a struct device to associate the errors with. Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-4-bjorn.andersson@linaro.org

soc: qcom: mdt_loader: Split out split-file-loader

2022-02-03T21:32:29+00:00

Spotted in a SM8450 device, the hash metadata segment is split out in a separate .bNN file which means that the logic for loading split out segmenents needs to be duplicated in qcom_mdt_read_metadata(). Split out the existing logic to a helper function that can be used in both code paths. Signed-off-by: Bjorn Andersson Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20220128025513.97188-3-bjorn.andersson@linaro.org