u-boot/arch/arm/cpu/armv7/smccc-call.S
Tom Rini 83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00

55 lines
1.2 KiB
ArmAsm

/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (c) 2015, Linaro Limited
*/
#include <linux/linkage.h>
#include <asm/opcodes-sec.h>
#include <asm/opcodes-virt.h>
#define UNWIND(x...)
/*
* Wrap c macros in asm macros to delay expansion until after the
* SMCCC asm macro is expanded.
*/
.macro SMCCC_SMC
__SMC(0)
.endm
.macro SMCCC_HVC
__HVC(0)
.endm
.macro SMCCC instr
UNWIND( .fnstart)
mov r12, sp
push {r4-r7}
UNWIND( .save {r4-r7})
ldm r12, {r4-r7}
\instr
pop {r4-r7}
ldr r12, [sp, #(4 * 4)]
stm r12, {r0-r3}
bx lr
UNWIND( .fnend)
.endm
/*
* void 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)
*/
ENTRY(__arm_smccc_smc)
SMCCC SMCCC_SMC
ENDPROC(__arm_smccc_smc)
/*
* void 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)
*/
ENTRY(__arm_smccc_hvc)
SMCCC SMCCC_HVC
ENDPROC(__arm_smccc_hvc)