diff options
Diffstat (limited to 'roms/u-boot/arch/arm/mach-stm32mp/include/mach/stm32mp1_smc.h')
-rw-r--r-- | roms/u-boot/arch/arm/mach-stm32mp/include/mach/stm32mp1_smc.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/roms/u-boot/arch/arm/mach-stm32mp/include/mach/stm32mp1_smc.h b/roms/u-boot/arch/arm/mach-stm32mp/include/mach/stm32mp1_smc.h new file mode 100644 index 000000000..4ad14f963 --- /dev/null +++ b/roms/u-boot/arch/arm/mach-stm32mp/include/mach/stm32mp1_smc.h @@ -0,0 +1,65 @@ +/* SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause */ +/* + * Copyright (C) 2019, STMicroelectronics - All Rights Reserved + */ + +#ifndef __STM32MP1_SMC_H__ +#define __STM32MP1_SMC_H__ + +#include <linux/arm-smccc.h> + +/* + * SMC function IDs for STM32 Service queries + * STM32 SMC services use the space between 0x82000000 and 0x8200FFFF + * like this is defined in SMC calling Convention by ARM + * for SiP (silicon Partner) + * http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html + */ +#define STM32_SMC_VERSION 0x82000000 + +/* Secure Service access from Non-secure */ +#define STM32_SMC_BSEC 0x82001003 + +/* Service for BSEC */ +#define STM32_SMC_READ_SHADOW 0x01 +#define STM32_SMC_PROG_OTP 0x02 +#define STM32_SMC_WRITE_SHADOW 0x03 +#define STM32_SMC_READ_OTP 0x04 +#define STM32_SMC_READ_ALL 0x05 +#define STM32_SMC_WRITE_ALL 0x06 +#define STM32_SMC_WRLOCK_OTP 0x07 + +/* SMC error codes */ +#define STM32_SMC_OK 0x0 +#define STM32_SMC_NOT_SUPPORTED -1 +#define STM32_SMC_FAILED -2 +#define STM32_SMC_INVALID_PARAMS -3 + +#define stm32_smc_exec(svc, op, data1, data2) \ + stm32_smc(svc, op, data1, data2, NULL) + +#ifdef CONFIG_ARM_SMCCC +static inline u32 stm32_smc(u32 svc, u8 op, u32 data1, u32 data2, u32 *result) +{ + struct arm_smccc_res res; + + arm_smccc_smc(svc, op, data1, data2, 0, 0, 0, 0, &res); + + if (res.a0) { + pr_err("%s: Failed to exec svc=%x op=%x in secure mode (err = %ld)\n", + __func__, svc, op, res.a0); + return -EINVAL; + } + if (result) + *result = (u32)res.a1; + + return 0; +} +#else +static inline u32 stm32_smc(u32 svc, u8 op, u32 data1, u32 data2, u32 *result) +{ + return 0; +} +#endif + +#endif /* __STM32MP1_SMC_H__ */ |