diff options
Diffstat (limited to 'meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0029-crypto-ccp-Implement-SEV_PEK_CSR-ioctl-command.patch')
| -rw-r--r-- | meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0029-crypto-ccp-Implement-SEV_PEK_CSR-ioctl-command.patch | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0029-crypto-ccp-Implement-SEV_PEK_CSR-ioctl-command.patch b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0029-crypto-ccp-Implement-SEV_PEK_CSR-ioctl-command.patch new file mode 100644 index 00000000..7b01289f --- /dev/null +++ b/meta-amd-bsp/recipes-kernel/linux/linux-yocto-4.14.71-e3000/0029-crypto-ccp-Implement-SEV_PEK_CSR-ioctl-command.patch @@ -0,0 +1,115 @@ +From c4934b87a53c572e16af9c87e6de0fc740f49f4f 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 29/95] crypto: ccp: Implement SEV_PEK_CSR ioctl command +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +The SEV_PEK_CSR command can be used to generate a PEK certificate +signing request. The command is defined in SEV spec section 5.7. + +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 | 66 ++++++++++++++++++++++++++++++++++++++++++++ + 1 file changed, 66 insertions(+) + +diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c +index fd3daf0..c3906bb 100644 +--- a/drivers/crypto/ccp/psp-dev.c ++++ b/drivers/crypto/ccp/psp-dev.c +@@ -302,6 +302,69 @@ static int sev_ioctl_do_pek_pdh_gen(int cmd, struct sev_issue_cmd *argp) + return __sev_do_cmd_locked(cmd, 0, &argp->error); + } + ++static int sev_ioctl_do_pek_csr(struct sev_issue_cmd *argp) ++{ ++ struct sev_user_data_pek_csr input; ++ struct sev_data_pek_csr *data; ++ void *blob = NULL; ++ 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 CSR length */ ++ if (!input.address || !input.length) ++ goto cmd; ++ ++ /* allocate a physically contiguous buffer to store the CSR blob */ ++ if (!access_ok(VERIFY_WRITE, input.address, input.length) || ++ input.length > SEV_FW_BLOB_MAX_SIZE) { ++ ret = -EFAULT; ++ goto e_free; ++ } ++ ++ blob = kmalloc(input.length, GFP_KERNEL); ++ if (!blob) { ++ ret = -ENOMEM; ++ goto e_free; ++ } ++ ++ data->address = __psp_pa(blob); ++ data->len = input.length; ++ ++cmd: ++ if (psp_master->sev_state == SEV_STATE_UNINIT) { ++ ret = __sev_platform_init_locked(&argp->error); ++ if (ret) ++ goto e_free_blob; ++ } ++ ++ ret = __sev_do_cmd_locked(SEV_CMD_PEK_CSR, data, &argp->error); ++ ++ /* If we query the CSR length, FW responded with expected data. */ ++ input.length = data->len; ++ ++ if (copy_to_user((void __user *)argp->data, &input, sizeof(input))) { ++ ret = -EFAULT; ++ goto e_free_blob; ++ } ++ ++ if (blob) { ++ if (copy_to_user((void __user *)input.address, blob, input.length)) ++ ret = -EFAULT; ++ } ++ ++e_free_blob: ++ kfree(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; +@@ -336,6 +399,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) + case SEV_PDH_GEN: + ret = sev_ioctl_do_pek_pdh_gen(SEV_CMD_PDH_GEN, &input); + break; ++ case SEV_PEK_CSR: ++ ret = sev_ioctl_do_pek_csr(&input); ++ break; + default: + ret = -EINVAL; + goto out; +-- +2.7.4 + |