diff options
| author | Rob Clark | 2020-01-07 16:24:16 -0800 |
|---|---|---|
| committer | Rob Clark | 2020-01-13 12:45:42 -0800 |
| commit | 6a0dea02c2c4fabacaef639b215b1cbbbea662a6 (patch) | |
| tree | 654f747c4fed87bd4683b383ed1c4ccee3d9ab9b /drivers/gpu/drm/msm | |
| parent | d4bbcade0ef597cb87b296ae18d70105e60e6032 (diff) | |
drm/msm: support firmware-name for zap fw (v2)
Since zap firmware can be device specific, allow for a firmware-name
property in the zap node to specify which firmware to load, similarly to
the scheme used for dsp/wifi/etc.
v2: only need a single error msg when we can't load from firmware-name
specified path, and fix comment [Bjorn A.]
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/gpu/drm/msm')
| -rw-r--r-- | drivers/gpu/drm/msm/adreno/adreno_gpu.c | 30 |
1 files changed, 27 insertions, 3 deletions
diff --git a/drivers/gpu/drm/msm/adreno/adreno_gpu.c b/drivers/gpu/drm/msm/adreno/adreno_gpu.c index 112e8b8a261e..456bb5af1717 100644 --- a/drivers/gpu/drm/msm/adreno/adreno_gpu.c +++ b/drivers/gpu/drm/msm/adreno/adreno_gpu.c @@ -26,6 +26,7 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname, { struct device *dev = &gpu->pdev->dev; const struct firmware *fw; + const char *signed_fwname = NULL; struct device_node *np, *mem_np; struct resource r; phys_addr_t mem_phys; @@ -58,8 +59,31 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname, mem_phys = r.start; - /* Request the MDT file for the firmware */ - fw = adreno_request_fw(to_adreno_gpu(gpu), fwname); + /* + * Check for a firmware-name property. This is the new scheme + * to handle firmware that may be signed with device specific + * keys, allowing us to have a different zap fw path for different + * devices. + * + * If the firmware-name property is found, we bypass the + * adreno_request_fw() mechanism, because we don't need to handle + * the /lib/firmware/qcom/* vs /lib/firmware/* case. + * + * If the firmware-name property is not found, for backwards + * compatibility we fall back to the fwname from the gpulist + * table. + */ + of_property_read_string_index(np, "firmware-name", 0, &signed_fwname); + if (signed_fwname) { + fwname = signed_fwname; + ret = request_firmware_direct(&fw, fwname, gpu->dev->dev); + if (ret) + fw = ERR_PTR(ret); + } else { + /* Request the MDT file from the default location: */ + fw = adreno_request_fw(to_adreno_gpu(gpu), fwname); + } + if (IS_ERR(fw)) { DRM_DEV_ERROR(dev, "Unable to load %s\n", fwname); return PTR_ERR(fw); @@ -95,7 +119,7 @@ static int zap_shader_load_mdt(struct msm_gpu *gpu, const char *fwname, * not. But since we've already gotten through adreno_request_fw() * we know which of the two cases it is: */ - if (to_adreno_gpu(gpu)->fwloc == FW_LOCATION_LEGACY) { + if (signed_fwname || (to_adreno_gpu(gpu)->fwloc == FW_LOCATION_LEGACY)) { ret = qcom_mdt_load(dev, fw, fwname, pasid, mem_region, mem_phys, mem_size, NULL); } else { |