linux/arch/arm/mach-at91/sam_secure.h

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2022, Microchip
 */

#ifndef SAM_SECURE_H
#define SAM_SECURE_H

#include <linux/arm-smccc.h>

/* Secure Monitor mode APIs */
#define SAMA5_SMC_SIP_SET_SUSPEND_MODE	0x400
#define SAMA5_SMC_SIP_GET_SUSPEND_MODE	0x401

void __init sam_secure_init(void);
struct arm_smccc_res sam_smccc_call(u32 fn, u32 arg0, u32 arg1);
bool sam_linux_is_optee_available(void);

#endif /* SAM_SECURE_H */
ARM: at91: add code to handle secure calls Since OP-TEE now has a more complete support for sama5d2, add necessary code to perform SMC calls. The detection of OP-TEE is based on a specific device-tree node path (/firmware/optee) such has done by some other SoC. A check is added to avoid doing SMC calls without having OP-TEE. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> 2022-05-02 23:22:18 +08:00			`/* SPDX-License-Identifier: GPL-2.0-only */`
			`/*`
			`* Copyright (C) 2022, Microchip`
			`*/`

			`#ifndef SAM_SECURE_H`
			`#define SAM_SECURE_H`

			`#include <linux/arm-smccc.h>`

ARM: at91: pm: add support for sama5d2 secure suspend When running with OP-TEE, the suspend control is handled securely. Suspend can be entered using PSCI support. Since the sama5d2 supports multiple suspend modes, add a new CONFIG_ATMEL_SECURE_PM which will send a SMC call to select the suspend mode at init time. "atmel.pm_modes" boot argument is still supported for compatibility purposes but the standby value is actually ignored since PSCI suspend is used and it only support one mode (suspend). Signed-off-by: Clément Léger <clement.leger@bootlin.com> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> 2022-05-02 23:22:19 +08:00			`/* Secure Monitor mode APIs */`
			`#define SAMA5_SMC_SIP_SET_SUSPEND_MODE 0x400`
			`#define SAMA5_SMC_SIP_GET_SUSPEND_MODE 0x401`

ARM: at91: add code to handle secure calls Since OP-TEE now has a more complete support for sama5d2, add necessary code to perform SMC calls. The detection of OP-TEE is based on a specific device-tree node path (/firmware/optee) such has done by some other SoC. A check is added to avoid doing SMC calls without having OP-TEE. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> 2022-05-02 23:22:18 +08:00			`void __init sam_secure_init(void);`
			`struct arm_smccc_res sam_smccc_call(u32 fn, u32 arg0, u32 arg1);`
ARM: at91: add sam_linux_is_optee_available() function Add sam_linux_is_optee_available() which allows to know if OP-TEE is available for Linux. This function is used by code which needs to know if we running with OP-TEE available or not. Signed-off-by: Clément Léger <clement.leger@bootlin.com> [claudiu.beznea: edit commit title and message, renamed sam_linux_is_in_normal_world() into sam_linux_is_optee_available()] Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Link: https://lore.kernel.org/r/20220606145701.185552-2-clement.leger@bootlin.com 2022-06-06 22:57:00 +08:00			`bool sam_linux_is_optee_available(void);`
ARM: at91: add code to handle secure calls Since OP-TEE now has a more complete support for sama5d2, add necessary code to perform SMC calls. The detection of OP-TEE is based on a specific device-tree node path (/firmware/optee) such has done by some other SoC. A check is added to avoid doing SMC calls without having OP-TEE. Signed-off-by: Clément Léger <clement.leger@bootlin.com> Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com> 2022-05-02 23:22:18 +08:00
			`#endif /* SAM_SECURE_H */`