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Commit cb3b29e9 authored by Avaneesh Kumar Dwivedi's avatar Avaneesh Kumar Dwivedi
Browse files

soc: qcom: Allocate contiguous buffer to pass mdt for authentication 



This change allocates coherent buffer and fill that with mdt content
to pass it for authentication.

Change-Id: I6530de830e10755ea31f031d98ce0ca1ebb94427
Signed-off-by: default avatarAvaneesh Kumar Dwivedi <akdwived@codeaurora.org>
parent e9fe1aef

drivers/soc/qcom/subsys-pil-bg.c

+15 −1
Original line number Diff line number Diff line
@@ -190,6 +190,8 @@ static long bgpil_tzapp_comm(struct pil_bg_data *pbd, 
		rc, bg_tz_rsp->status);

	if (rc || bg_tz_rsp->status)

		pbd->cmd_status = bg_tz_rsp->status;

	else

		pbd->cmd_status = 0;

end:

	return rc;

}
@@ -305,10 +307,21 @@ static int bg_auth_metadata(struct pil_desc *pil, 
{

	struct pil_bg_data *bg_data = desc_to_data(pil);

	struct tzapp_bg_req bg_tz_req;

	void *mdata_buf;

	dma_addr_t mdata_phys;

	int ret;



	mdata_buf = dma_alloc_coherent(pil->dev, size,

			&mdata_phys, GFP_KERNEL);

	if (!mdata_buf) {

		pr_err("BG_PIL: Allocation for metadata failed.\n");

		return -ENOMEM;

	}



	memcpy(mdata_buf, metadata, size);



	bg_tz_req.tzapp_bg_cmd = BGPIL_AUTH_MDT;

	bg_tz_req.address_fw = (phys_addr_t)metadata;

	bg_tz_req.address_fw = (phys_addr_t)mdata_phys;

	bg_tz_req.size_fw = size;



	ret = bgpil_tzapp_comm(bg_data, &bg_tz_req);
@@ -318,6 +331,7 @@ static int bg_auth_metadata(struct pil_desc *pil, 
				__func__);

		return bg_data->cmd_status;

	}

	dma_free_coherent(pil->dev, size, mdata_buf, mdata_phys);

	pr_debug("BG MDT Authenticated\n");

	return 0;

}