Commit bdea62e9 authored by hanliyang's avatar hanliyang
Browse files

crypto: ccp: Implement CSV_PLATFORM_SHUTDOWN ioctl command 

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


CVE: NA

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

The CSV_PLATFORM_SHUTDOWN command can be used by the platform owner to
switch platform to PSTATE.UNINIT.

The DOWNLOAD_FIRMWARE API can only performed when platform is in the
PSTATE.UNINIT. In order to support DOWNLOAD_FIRMWARE at userspace, we
need invoke PLATFORM_SHUTDOWN before that.

Signed-off-by: default avatarhanliyang <hanliyang@hygon.cn>
parent f5f79d11

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

+3 −0
Original line number Diff line number Diff line
@@ -120,6 +120,9 @@ static long csv_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) 
	case CSV_PLATFORM_INIT:

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

		break;

	case CSV_PLATFORM_SHUTDOWN:

		ret = hygon_psp_hooks.__sev_platform_shutdown_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
@@ -26,6 +26,7 @@ extern struct hygon_psp_hooks_table { 
	struct mutex *sev_cmd_mutex;

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

	int (*__sev_platform_init_locked)(int *error);

	int (*__sev_platform_shutdown_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
@@ -1264,6 +1264,7 @@ 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_platform_shutdown_locked = __sev_platform_shutdown_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
@@ -22,6 +22,7 @@ 
 */

enum {

	CSV_PLATFORM_INIT = 101,

	CSV_PLATFORM_SHUTDOWN = 102,

	CSV_HGSC_CERT_IMPORT = 201,



	CSV_MAX,