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Commit 4d84b726 authored by Brijesh Singh's avatar Brijesh Singh
Browse files

crypto: ccp: Implement SEV_PEK_GEN ioctl command 



The SEV_PEK_GEN command is used to generate a new Platform Endorsement
Key (PEK). The command is defined in SEV spec section 5.6.

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
Reviewed-by: default avatarBorislav Petkov <bp@suse.de>
Improvements-by: default avatarBorislav Petkov <bp@suse.de>
Signed-off-by: default avatarBrijesh Singh <brijesh.singh@amd.com>
Acked-by: default avatarGary R Hook <gary.hook@amd.com>
parent efe1829b

drivers/crypto/ccp/psp-dev.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -289,6 +289,19 @@ static int sev_ioctl_do_platform_status(struct sev_issue_cmd *argp) 
	return ret;

	return ret;

}

}





static int sev_ioctl_do_pek_pdh_gen(int cmd, struct sev_issue_cmd *argp)

{

	int rc;



	if (psp_master->sev_state == SEV_STATE_UNINIT) {

		rc = __sev_platform_init_locked(&argp->error);

		if (rc)

			return rc;

	}



	return __sev_do_cmd_locked(cmd, 0, &argp->error);

}



static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg)

static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg)

{

{

	void __user *argp = (void __user *)arg;

	void __user *argp = (void __user *)arg;
@@ -317,6 +330,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) 
	case SEV_PLATFORM_STATUS:

	case SEV_PLATFORM_STATUS:

		ret = sev_ioctl_do_platform_status(&input);

		ret = sev_ioctl_do_platform_status(&input);

		break;

		break;

	case SEV_PEK_GEN:

		ret = sev_ioctl_do_pek_pdh_gen(SEV_CMD_PEK_GEN, &input);

		break;

	default:

	default:

		ret = -EINVAL;

		ret = -EINVAL;

		goto out;

		goto out;