Commit f5f79d11 authored by hanliyang's avatar hanliyang
Browse files

crypto: ccp: Implement CSV_PLATFORM_INIT ioctl command 

hygon inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I98VXP


CVE: NA

---------------------------

The CSV_PLATFORM_INIT command can be used by the platform owner to
switch platform from PSTATE.UNINIT to PSTATE.INIT.

In the upcoming patches, we'll support DOWNLOAD_FIRMWARE at userspace.
Due to DOWNLOAD_FIRMWARE can only performed when platform is in the
PSTATE.UNINIT, we need invoke PLATFORM_INIT following DOWNLOAD_FIRMWARE
to switch platform back to PSTATE.INIT.

Signed-off-by: default avatarhanliyang <hanliyang@hygon.cn>
parent 0637deeb

drivers/crypto/ccp/hygon/csv-dev.c

+3 −0
Original line number Diff line number Diff line
@@ -117,6 +117,9 @@ static long csv_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) 
	case CSV_HGSC_CERT_IMPORT:

		ret = csv_ioctl_do_hgsc_import(&input);

		break;

	case CSV_PLATFORM_INIT:

		ret = hygon_psp_hooks.__sev_platform_init_locked(&input.error);

		break;

	default:

		/*

		 * If the command is compatible between CSV and SEV, the

drivers/crypto/ccp/hygon/psp-dev.h

+1 −0
Original line number Diff line number Diff line
@@ -25,6 +25,7 @@ extern struct hygon_psp_hooks_table { 
	bool sev_dev_hooks_installed;

	struct mutex *sev_cmd_mutex;

	int (*__sev_do_cmd_locked)(int cmd, void *data, int *psp_ret);

	int (*__sev_platform_init_locked)(int *error);

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

} hygon_psp_hooks;

drivers/crypto/ccp/sev-dev.c

+1 −0
Original line number Diff line number Diff line
@@ -1263,6 +1263,7 @@ static void sev_dev_install_hooks(void) 
{

	hygon_psp_hooks.sev_cmd_mutex = &sev_cmd_mutex;

	hygon_psp_hooks.__sev_do_cmd_locked = __sev_do_cmd_locked;

	hygon_psp_hooks.__sev_platform_init_locked = __sev_platform_init_locked;

	hygon_psp_hooks.sev_ioctl = sev_ioctl;



	hygon_psp_hooks.sev_dev_hooks_installed = true;

include/uapi/linux/psp-hygon.h

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
 * CSV guest/platform commands

 */

enum {

	CSV_PLATFORM_INIT = 101,

	CSV_HGSC_CERT_IMPORT = 201,



	CSV_MAX,