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-rw-r--r--drivers/crypto/ccp/sev-dev.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/sev-dev.c b/drivers/crypto/ccp/sev-dev.c
index 1912bee22dd4..9810edbb272d 100644
--- a/drivers/crypto/ccp/sev-dev.c
+++ b/drivers/crypto/ccp/sev-dev.c
@@ -2033,6 +2033,39 @@ static int sev_ioctl_do_snp_set_config(struct sev_issue_cmd *argp, bool writable
return __sev_do_cmd_locked(SEV_CMD_SNP_CONFIG, &config, &argp->error);
}
+static int sev_ioctl_do_snp_vlek_load(struct sev_issue_cmd *argp, bool writable)
+{
+ struct sev_device *sev = psp_master->sev_data;
+ struct sev_user_data_snp_vlek_load input;
+ void *blob;
+ int ret;
+
+ if (!sev->snp_initialized || !argp->data)
+ return -EINVAL;
+
+ if (!writable)
+ return -EPERM;
+
+ if (copy_from_user(&input, u64_to_user_ptr(argp->data), sizeof(input)))
+ return -EFAULT;
+
+ if (input.len != sizeof(input) || input.vlek_wrapped_version != 0)
+ return -EINVAL;
+
+ blob = psp_copy_user_blob(input.vlek_wrapped_address,
+ sizeof(struct sev_user_data_snp_wrapped_vlek_hashstick));
+ if (IS_ERR(blob))
+ return PTR_ERR(blob);
+
+ input.vlek_wrapped_address = __psp_pa(blob);
+
+ ret = __sev_do_cmd_locked(SEV_CMD_SNP_VLEK_LOAD, &input, &argp->error);
+
+ kfree(blob);
+
+ return ret;
+}
+
static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg)
{
void __user *argp = (void __user *)arg;
@@ -2093,6 +2126,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg)
case SNP_SET_CONFIG:
ret = sev_ioctl_do_snp_set_config(&input, writable);
break;
+ case SNP_VLEK_LOAD:
+ ret = sev_ioctl_do_snp_vlek_load(&input, writable);
+ break;
default:
ret = -EINVAL;
goto out;