diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0031-crypto-ccp-Implement-SEV_PDH_CERT_EXPORT-ioctl-comma.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0031-crypto-ccp-Implement-SEV_PDH_CERT_EXPORT-ioctl-comma.patch | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0031-crypto-ccp-Implement-SEV_PDH_CERT_EXPORT-ioctl-comma.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0031-crypto-ccp-Implement-SEV_PDH_CERT_EXPORT-ioctl-comma.patch new file mode 100644 index 00000000..091165e4 --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0031-crypto-ccp-Implement-SEV_PDH_CERT_EXPORT-ioctl-comma.patch @@ -0,0 +1,147 @@ +From 179b8d37cbd2fee5cc2ec40c4d233ebea55e762a Mon Sep 17 00:00:00 2001 +From: Brijesh Singh <brijesh.singh@amd.com> +Date: Mon, 4 Dec 2017 10:57:31 -0600 +Subject: [PATCH 31/95] crypto: ccp: Implement SEV_PDH_CERT_EXPORT ioctl + command +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The SEV_PDH_CERT_EXPORT command can be used to export the PDH and its +certificate chain. The command is defined in SEV spec section 5.10. + +Cc: Paolo Bonzini <pbonzini@redhat.com> +Cc: "Radim Krčmář" <rkrcmar@redhat.com> +Cc: Borislav Petkov <bp@suse.de> +Cc: Herbert Xu <herbert@gondor.apana.org.au> +Cc: Gary Hook <gary.hook@amd.com> +Cc: Tom Lendacky <thomas.lendacky@amd.com> +Cc: linux-crypto@vger.kernel.org +Cc: kvm@vger.kernel.org +Cc: linux-kernel@vger.kernel.org +Improvements-by: Borislav Petkov <bp@suse.de> +Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> +Acked-by: Gary R Hook <gary.hook@amd.com> +Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com> +--- + drivers/crypto/ccp/psp-dev.c | 97 ++++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 97 insertions(+) + +diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c +index 9d1c460..fcfa5b1 100644 +--- a/drivers/crypto/ccp/psp-dev.c ++++ b/drivers/crypto/ccp/psp-dev.c +@@ -443,6 +443,100 @@ static int sev_ioctl_do_pek_import(struct sev_issue_cmd *argp) + return ret; + } + ++static int sev_ioctl_do_pdh_export(struct sev_issue_cmd *argp) ++{ ++ struct sev_user_data_pdh_cert_export input; ++ void *pdh_blob = NULL, *cert_blob = NULL; ++ struct sev_data_pdh_cert_export *data; ++ int ret; ++ ++ if (copy_from_user(&input, (void __user *)argp->data, sizeof(input))) ++ return -EFAULT; ++ ++ data = kzalloc(sizeof(*data), GFP_KERNEL); ++ if (!data) ++ return -ENOMEM; ++ ++ /* Userspace wants to query the certificate length. */ ++ if (!input.pdh_cert_address || ++ !input.pdh_cert_len || ++ !input.cert_chain_address) ++ goto cmd; ++ ++ /* Allocate a physically contiguous buffer to store the PDH blob. */ ++ if ((input.pdh_cert_len > SEV_FW_BLOB_MAX_SIZE) || ++ !access_ok(VERIFY_WRITE, input.pdh_cert_address, input.pdh_cert_len)) { ++ ret = -EFAULT; ++ goto e_free; ++ } ++ ++ /* Allocate a physically contiguous buffer to store the cert chain blob. */ ++ if ((input.cert_chain_len > SEV_FW_BLOB_MAX_SIZE) || ++ !access_ok(VERIFY_WRITE, input.cert_chain_address, input.cert_chain_len)) { ++ ret = -EFAULT; ++ goto e_free; ++ } ++ ++ pdh_blob = kmalloc(input.pdh_cert_len, GFP_KERNEL); ++ if (!pdh_blob) { ++ ret = -ENOMEM; ++ goto e_free; ++ } ++ ++ data->pdh_cert_address = __psp_pa(pdh_blob); ++ data->pdh_cert_len = input.pdh_cert_len; ++ ++ cert_blob = kmalloc(input.cert_chain_len, GFP_KERNEL); ++ if (!cert_blob) { ++ ret = -ENOMEM; ++ goto e_free_pdh; ++ } ++ ++ data->cert_chain_address = __psp_pa(cert_blob); ++ data->cert_chain_len = input.cert_chain_len; ++ ++cmd: ++ /* If platform is not in INIT state then transition it to INIT. */ ++ if (psp_master->sev_state != SEV_STATE_INIT) { ++ ret = __sev_platform_init_locked(&argp->error); ++ if (ret) ++ goto e_free_cert; ++ } ++ ++ ret = __sev_do_cmd_locked(SEV_CMD_PDH_CERT_EXPORT, data, &argp->error); ++ ++ /* If we query the length, FW responded with expected data. */ ++ input.cert_chain_len = data->cert_chain_len; ++ input.pdh_cert_len = data->pdh_cert_len; ++ ++ if (copy_to_user((void __user *)argp->data, &input, sizeof(input))) { ++ ret = -EFAULT; ++ goto e_free_cert; ++ } ++ ++ if (pdh_blob) { ++ if (copy_to_user((void __user *)input.pdh_cert_address, ++ pdh_blob, input.pdh_cert_len)) { ++ ret = -EFAULT; ++ goto e_free_cert; ++ } ++ } ++ ++ if (cert_blob) { ++ if (copy_to_user((void __user *)input.cert_chain_address, ++ cert_blob, input.cert_chain_len)) ++ ret = -EFAULT; ++ } ++ ++e_free_cert: ++ kfree(cert_blob); ++e_free_pdh: ++ kfree(pdh_blob); ++e_free: ++ kfree(data); ++ return ret; ++} ++ + static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) + { + void __user *argp = (void __user *)arg; +@@ -483,6 +577,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) + case SEV_PEK_CERT_IMPORT: + ret = sev_ioctl_do_pek_import(&input); + break; ++ case SEV_PDH_CERT_EXPORT: ++ ret = sev_ioctl_do_pdh_export(&input); ++ break; + default: + ret = -EINVAL; + goto out; +-- +2.7.4 + |