mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-31 22:39:08 +09:00
![Masahiro Yamada](/assets/img/avatar_default.png)
Adjust ARM SMC Calling Convention code for U-Boot: - Replace the license block with SPDX - Change path to asm-offsets.h - Define UNWIND() as no-op - Add Kconfig entry - Add asm-offsets Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/*
|
|
* Copyright (c) 2015, Linaro Limited
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0
|
|
*/
|
|
#ifndef __LINUX_ARM_SMCCC_H
|
|
#define __LINUX_ARM_SMCCC_H
|
|
|
|
/*
|
|
* This file provides common defines for ARM SMC Calling Convention as
|
|
* specified in
|
|
* http://infocenter.arm.com/help/topic/com.arm.doc.den0028a/index.html
|
|
*/
|
|
|
|
#define ARM_SMCCC_STD_CALL 0
|
|
#define ARM_SMCCC_FAST_CALL 1
|
|
#define ARM_SMCCC_TYPE_SHIFT 31
|
|
|
|
#define ARM_SMCCC_SMC_32 0
|
|
#define ARM_SMCCC_SMC_64 1
|
|
#define ARM_SMCCC_CALL_CONV_SHIFT 30
|
|
|
|
#define ARM_SMCCC_OWNER_MASK 0x3F
|
|
#define ARM_SMCCC_OWNER_SHIFT 24
|
|
|
|
#define ARM_SMCCC_FUNC_MASK 0xFFFF
|
|
|
|
#define ARM_SMCCC_IS_FAST_CALL(smc_val) \
|
|
((smc_val) & (ARM_SMCCC_FAST_CALL << ARM_SMCCC_TYPE_SHIFT))
|
|
#define ARM_SMCCC_IS_64(smc_val) \
|
|
((smc_val) & (ARM_SMCCC_SMC_64 << ARM_SMCCC_CALL_CONV_SHIFT))
|
|
#define ARM_SMCCC_FUNC_NUM(smc_val) ((smc_val) & ARM_SMCCC_FUNC_MASK)
|
|
#define ARM_SMCCC_OWNER_NUM(smc_val) \
|
|
(((smc_val) >> ARM_SMCCC_OWNER_SHIFT) & ARM_SMCCC_OWNER_MASK)
|
|
|
|
#define ARM_SMCCC_CALL_VAL(type, calling_convention, owner, func_num) \
|
|
(((type) << ARM_SMCCC_TYPE_SHIFT) | \
|
|
((calling_convention) << ARM_SMCCC_CALL_CONV_SHIFT) | \
|
|
(((owner) & ARM_SMCCC_OWNER_MASK) << ARM_SMCCC_OWNER_SHIFT) | \
|
|
((func_num) & ARM_SMCCC_FUNC_MASK))
|
|
|
|
#define ARM_SMCCC_OWNER_ARCH 0
|
|
#define ARM_SMCCC_OWNER_CPU 1
|
|
#define ARM_SMCCC_OWNER_SIP 2
|
|
#define ARM_SMCCC_OWNER_OEM 3
|
|
#define ARM_SMCCC_OWNER_STANDARD 4
|
|
#define ARM_SMCCC_OWNER_TRUSTED_APP 48
|
|
#define ARM_SMCCC_OWNER_TRUSTED_APP_END 49
|
|
#define ARM_SMCCC_OWNER_TRUSTED_OS 50
|
|
#define ARM_SMCCC_OWNER_TRUSTED_OS_END 63
|
|
|
|
#define ARM_SMCCC_QUIRK_NONE 0
|
|
#define ARM_SMCCC_QUIRK_QCOM_A6 1 /* Save/restore register a6 */
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
#include <linux/linkage.h>
|
|
#include <linux/types.h>
|
|
/**
|
|
* struct arm_smccc_res - Result from SMC/HVC call
|
|
* @a0-a3 result values from registers 0 to 3
|
|
*/
|
|
struct arm_smccc_res {
|
|
unsigned long a0;
|
|
unsigned long a1;
|
|
unsigned long a2;
|
|
unsigned long a3;
|
|
};
|
|
|
|
/**
|
|
* struct arm_smccc_quirk - Contains quirk information
|
|
* @id: quirk identification
|
|
* @state: quirk specific information
|
|
* @a6: Qualcomm quirk entry for returning post-smc call contents of a6
|
|
*/
|
|
struct arm_smccc_quirk {
|
|
int id;
|
|
union {
|
|
unsigned long a6;
|
|
} state;
|
|
};
|
|
|
|
/**
|
|
* __arm_smccc_smc() - make SMC calls
|
|
* @a0-a7: arguments passed in registers 0 to 7
|
|
* @res: result values from registers 0 to 3
|
|
* @quirk: points to an arm_smccc_quirk, or NULL when no quirks are required.
|
|
*
|
|
* This function is used to make SMC calls following SMC Calling Convention.
|
|
* The content of the supplied param are copied to registers 0 to 7 prior
|
|
* to the SMC instruction. The return values are updated with the content
|
|
* from register 0 to 3 on return from the SMC instruction. An optional
|
|
* quirk structure provides vendor specific behavior.
|
|
*/
|
|
asmlinkage void __arm_smccc_smc(unsigned long a0, unsigned long a1,
|
|
unsigned long a2, unsigned long a3, unsigned long a4,
|
|
unsigned long a5, unsigned long a6, unsigned long a7,
|
|
struct arm_smccc_res *res, struct arm_smccc_quirk *quirk);
|
|
|
|
/**
|
|
* __arm_smccc_hvc() - make HVC calls
|
|
* @a0-a7: arguments passed in registers 0 to 7
|
|
* @res: result values from registers 0 to 3
|
|
* @quirk: points to an arm_smccc_quirk, or NULL when no quirks are required.
|
|
*
|
|
* This function is used to make HVC calls following SMC Calling
|
|
* Convention. The content of the supplied param are copied to registers 0
|
|
* to 7 prior to the HVC instruction. The return values are updated with
|
|
* the content from register 0 to 3 on return from the HVC instruction. An
|
|
* optional quirk structure provides vendor specific behavior.
|
|
*/
|
|
asmlinkage void __arm_smccc_hvc(unsigned long a0, unsigned long a1,
|
|
unsigned long a2, unsigned long a3, unsigned long a4,
|
|
unsigned long a5, unsigned long a6, unsigned long a7,
|
|
struct arm_smccc_res *res, struct arm_smccc_quirk *quirk);
|
|
|
|
#define arm_smccc_smc(...) __arm_smccc_smc(__VA_ARGS__, NULL)
|
|
|
|
#define arm_smccc_smc_quirk(...) __arm_smccc_smc(__VA_ARGS__)
|
|
|
|
#define arm_smccc_hvc(...) __arm_smccc_hvc(__VA_ARGS__, NULL)
|
|
|
|
#define arm_smccc_hvc_quirk(...) __arm_smccc_hvc(__VA_ARGS__)
|
|
|
|
#endif /*__ASSEMBLY__*/
|
|
#endif /*__LINUX_ARM_SMCCC_H*/
|