* [PATCH] drm/msm: a6xx: fix version check for the A650 SQE microcode
@ 2021-03-31 14:02 Dmitry Baryshkov
2021-03-31 15:07 ` Rob Clark
2021-04-01 19:07 ` Jordan Crouse
0 siblings, 2 replies; 3+ messages in thread
From: Dmitry Baryshkov @ 2021-03-31 14:02 UTC (permalink / raw)
To: Rob Clark, Sean Paul, Jonathan Marek
Cc: Stephen Boyd, linux-arm-msm, Akhil P Oommen, dri-devel,
David Airlie, Jordan Crouse, freedreno
I suppose the microcode version check for a650 is incorrect. It checks
for the version 1.95, while the firmware released have major version of 0:
0.91 (vulnerable), 0.99 (fixing the issue).
Lower version requirements to accept firmware 0.99.
Fixes: 8490f02a3ca4 ("drm/msm: a6xx: Make sure the SQE microcode is safe")
Cc: Akhil P Oommen <akhilpo@codeaurora.org>
Cc: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index cb2df8736ca8..896b47dc9c85 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -567,17 +567,17 @@ static bool a6xx_ucode_check_version(struct a6xx_gpu *a6xx_gpu,
} else {
/*
* a650 tier targets don't need whereami but still need to be
- * equal to or newer than 1.95 for other security fixes
+ * equal to or newer than 0.95 for other security fixes
*/
if (adreno_is_a650(adreno_gpu)) {
- if ((buf[0] & 0xfff) >= 0x195) {
+ if ((buf[0] & 0xfff) >= 0x095) {
ret = true;
goto out;
}
DRM_DEV_ERROR(&gpu->pdev->dev,
"a650 SQE ucode is too old. Have version %x need at least %x\n",
- buf[0] & 0xfff, 0x195);
+ buf[0] & 0xfff, 0x095);
}
/*
--
2.30.2
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^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH] drm/msm: a6xx: fix version check for the A650 SQE microcode
2021-03-31 14:02 [PATCH] drm/msm: a6xx: fix version check for the A650 SQE microcode Dmitry Baryshkov
@ 2021-03-31 15:07 ` Rob Clark
2021-04-01 19:07 ` Jordan Crouse
1 sibling, 0 replies; 3+ messages in thread
From: Rob Clark @ 2021-03-31 15:07 UTC (permalink / raw)
To: Dmitry Baryshkov
Cc: freedreno, Jonathan Marek, Stephen Boyd, linux-arm-msm,
Akhil P Oommen, dri-devel, Jordan Crouse, David Airlie,
Sean Paul
fixing Jordan's email so he actually sees this
On Wed, Mar 31, 2021 at 7:02 AM Dmitry Baryshkov
<dmitry.baryshkov@linaro.org> wrote:
>
> I suppose the microcode version check for a650 is incorrect. It checks
> for the version 1.95, while the firmware released have major version of 0:
> 0.91 (vulnerable), 0.99 (fixing the issue).
>
> Lower version requirements to accept firmware 0.99.
>
> Fixes: 8490f02a3ca4 ("drm/msm: a6xx: Make sure the SQE microcode is safe")
> Cc: Akhil P Oommen <akhilpo@codeaurora.org>
> Cc: Jordan Crouse <jcrouse@codeaurora.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index cb2df8736ca8..896b47dc9c85 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -567,17 +567,17 @@ static bool a6xx_ucode_check_version(struct a6xx_gpu *a6xx_gpu,
> } else {
> /*
> * a650 tier targets don't need whereami but still need to be
> - * equal to or newer than 1.95 for other security fixes
> + * equal to or newer than 0.95 for other security fixes
> */
> if (adreno_is_a650(adreno_gpu)) {
> - if ((buf[0] & 0xfff) >= 0x195) {
> + if ((buf[0] & 0xfff) >= 0x095) {
> ret = true;
> goto out;
> }
>
> DRM_DEV_ERROR(&gpu->pdev->dev,
> "a650 SQE ucode is too old. Have version %x need at least %x\n",
> - buf[0] & 0xfff, 0x195);
> + buf[0] & 0xfff, 0x095);
> }
>
> /*
> --
> 2.30.2
>
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^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH] drm/msm: a6xx: fix version check for the A650 SQE microcode
2021-03-31 14:02 [PATCH] drm/msm: a6xx: fix version check for the A650 SQE microcode Dmitry Baryshkov
2021-03-31 15:07 ` Rob Clark
@ 2021-04-01 19:07 ` Jordan Crouse
1 sibling, 0 replies; 3+ messages in thread
From: Jordan Crouse @ 2021-04-01 19:07 UTC (permalink / raw)
To: Dmitry Baryshkov
Cc: freedreno, Jordan Crouse, Jonathan Marek, Stephen Boyd,
linux-arm-msm, Akhil P Oommen, dri-devel, David Airlie,
Sean Paul
On Wed, Mar 31, 2021 at 05:02:23PM +0300, Dmitry Baryshkov wrote:
> I suppose the microcode version check for a650 is incorrect. It checks
> for the version 1.95, while the firmware released have major version of 0:
> 0.91 (vulnerable), 0.99 (fixing the issue).
>
> Lower version requirements to accept firmware 0.99.
Ugh, my ugly. .95 is the actual version that fixed it but since .99 is what is
going into the l-f repo it is fine to use that as a baseline.
Acked-by: Jordan Crouse <jordan@cosmicpenguin.net>
> Fixes: 8490f02a3ca4 ("drm/msm: a6xx: Make sure the SQE microcode is safe")
> Cc: Akhil P Oommen <akhilpo@codeaurora.org>
> Cc: Jordan Crouse <jcrouse@codeaurora.org>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
> ---
> drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index cb2df8736ca8..896b47dc9c85 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -567,17 +567,17 @@ static bool a6xx_ucode_check_version(struct a6xx_gpu *a6xx_gpu,
> } else {
> /*
> * a650 tier targets don't need whereami but still need to be
> - * equal to or newer than 1.95 for other security fixes
> + * equal to or newer than 0.95 for other security fixes
> */
> if (adreno_is_a650(adreno_gpu)) {
> - if ((buf[0] & 0xfff) >= 0x195) {
> + if ((buf[0] & 0xfff) >= 0x095) {
> ret = true;
> goto out;
> }
>
> DRM_DEV_ERROR(&gpu->pdev->dev,
> "a650 SQE ucode is too old. Have version %x need at least %x\n",
> - buf[0] & 0xfff, 0x195);
> + buf[0] & 0xfff, 0x095);
> }
>
> /*
> --
> 2.30.2
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
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2021-03-31 14:02 [PATCH] drm/msm: a6xx: fix version check for the A650 SQE microcode Dmitry Baryshkov
2021-03-31 15:07 ` Rob Clark
2021-04-01 19:07 ` Jordan Crouse
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