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gpu: nvgpu: ls ucode decryption support

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On T234 theCTXSW LS ucodes are encrypted. ACR will perform the
decryption and the decrypted content will be written back
into the same WPR location. So on recovery with LSPMU absence
and on warm boot case, to perform the authentication , the ucode
blob needs to be copied into the WPR from sysmem always.
Below are the LS ucodes authentication type
	* LSPMU - Only Signed ( Only for non-safety build, for safety LSPMU is NA)
	* CTXSW FECS/GPCCS - Encrypted and Signed (on both safety and non-safety build)

ACR FW P4 Change : 32110924

JIRA NVGPU-7903

Change-Id: If447148c02b9cf310102cfb9c688eef402699409
Signed-off-by: Dinesh Kamalakannan <dineshka@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2822656
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svc-mobile-misra <svc-mobile-misra@nvidia.com>
Reviewed-by: Vaibhav Kachore <vkachore@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Dinesh Kamalakannan
2022-12-06 20:51:54 +05:30
committed by mobile promotions
parent a92bca9772
commit 19f44e0421
3 changed files with 31 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/gpu/nvgpu/common/acr/acr.c
View File

@@ -162,6 +162,7 @@ int nvgpu_acr_init(struct gk20a *g)
nvgpu_gv11b_acr_sw_init(g, g->acr); nvgpu_gv11b_acr_sw_init(g, g->acr);
break; break;
case NVGPU_GPUID_GA10B: case NVGPU_GPUID_GA10B:
g->acr->is_lsf_encrypt_support = true;
nvgpu_ga10b_acr_sw_init(g, g->acr); nvgpu_ga10b_acr_sw_init(g, g->acr);
break; break;
#ifdef CONFIG_NVGPU_DGPU #ifdef CONFIG_NVGPU_DGPU

1
drivers/gpu/nvgpu/common/acr/acr_priv.h
View File

@@ -136,6 +136,7 @@ struct nvgpu_acr {
/* LSF properties */ /* LSF properties */
u64 lsf_enable_mask; u64 lsf_enable_mask;
bool is_lsf_encrypt_support;
struct acr_lsf_config lsf[FALCON_ID_END]; struct acr_lsf_config lsf[FALCON_ID_END];
/* /*

27
drivers/gpu/nvgpu/common/acr/acr_sw_ga10b.c
View File

@@ -102,8 +102,22 @@ static int ga10b_acr_patch_wpr_info_to_ucode(struct gk20a *g,
nvgpu_err(g, "invalid mem acr_falcon2_sysmem_desc"); nvgpu_err(g, "invalid mem acr_falcon2_sysmem_desc");
return -EINVAL; return -EINVAL;
} }
/*
* In T234 the CTXSW LS ucodes are encrypted. ACR will perform the
* decryption and the decrypted content will be written back
* into the same WPR location. So on recovery with LSPMU absence
* and on warm boot case, to perform the authentication , the ucode
* blob needs to be copied into the WPR from sysmem always.
* Below are the LS ucodes authentication type
* LSPMU - Only Signed ( Only for non-safety build, for safety LSPMU is NA)
* CTXSW FECS/GPCCS - Encrypted and Signed (on both safety
* and non-safety build)
*/
if (!acr->is_lsf_encrypt_support) {
acr_sysmem_desc->nonwpr_ucode_blob_size = acr_sysmem_desc->nonwpr_ucode_blob_size =
RECOVERY_UCODE_BLOB_SIZE; RECOVERY_UCODE_BLOB_SIZE;
}
} else } else
#endif #endif
{ {
@@ -121,8 +135,21 @@ static int ga10b_acr_patch_wpr_info_to_ucode(struct gk20a *g,
goto end; goto end;
} }
} else { } else {
/*
* In T234 the CTXSW LS ucodes are encrypted. ACR will perform the
* decryption and the decrypted content will be written back
* into the same WPR location. So on recovery with LSPMU absence
* and on warm boot case, to perform the authentication , the ucode
* blob needs to be copied into the WPR from sysmem always.
* Below are the LS ucodes authentication type
* LSPMU - Only Signed ( Only for non-safety build, for safety LSPMU is NA)
* CTXSW FECS/GPCCS - Encrypted and Signed (on both safety
* and non-safety build
*/
if (!acr->is_lsf_encrypt_support) {
acr_sysmem_desc->nonwpr_ucode_blob_size = acr_sysmem_desc->nonwpr_ucode_blob_size =
RECOVERY_UCODE_BLOB_SIZE; RECOVERY_UCODE_BLOB_SIZE;
}
goto load; goto load;
} }