[U-Boot] [PATCH 05/23] imx: add sip function

[Peng Fan]

On Tue, Nov 28, 2017 at 07:16:52PM +0100, Stefano Babic wrote:
>On 28/11/2017 13:31, Peng Fan wrote:
>> Add SIP function to issue SMC call to Arm Trusted Firmware.
>
>I admit I do not know what is a SIP function. Patch simply adds a
>wrapper, can you add a commit message with a more detailed explanation
>for this ?

ok. I'll add. This is just like psci call.

Regards,
Peng.

>
>> 
>> Signed-off-by: Peng Fan <peng.fan at nxp.com>
>> ---
>>  arch/arm/include/asm/mach-imx/sys_proto.h |  3 +++
>>  arch/arm/mach-imx/Makefile                |  2 ++
>>  arch/arm/mach-imx/sip.c                   | 23 +++++++++++++++++++++++
>>  3 files changed, 28 insertions(+)
>>  create mode 100644 arch/arm/mach-imx/sip.c
>> 
>> diff --git a/arch/arm/include/asm/mach-imx/sys_proto.h b/arch/arm/include/asm/mach-imx/sys_proto.h
>> index a80a392a73..2d8afed406 100644
>> --- a/arch/arm/include/asm/mach-imx/sys_proto.h
>> +++ b/arch/arm/include/asm/mach-imx/sys_proto.h
>> @@ -122,4 +122,7 @@ void lcdif_power_down(void);
>>  int mxs_reset_block(struct mxs_register_32 *reg);
>>  int mxs_wait_mask_set(struct mxs_register_32 *reg, u32 mask, u32 timeout);
>>  int mxs_wait_mask_clr(struct mxs_register_32 *reg, u32 mask, u32 timeout);
>> +
>> +unsigned long call_imx_sip(unsigned long id, unsigned long reg0,
>> +			   unsigned long reg1, unsigned long reg2);
>>  #endif
>> diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
>> index d77c10e176..c807174363 100644
>> --- a/arch/arm/mach-imx/Makefile
>> +++ b/arch/arm/mach-imx/Makefile
>> @@ -121,6 +121,8 @@ spl/u-boot-nand-spl.imx: SPL FORCE
>>  
>>  targets += $(addprefix ../../../,$(IMX_CONFIG) SPL u-boot.uim spl/u-boot-nand-spl.imx)
>>  
>> +obj-$(CONFIG_ARM64) += sip.o
>> +
>>  obj-$(CONFIG_MX5) += mx5/
>>  obj-$(CONFIG_MX6) += mx6/
>>  obj-$(CONFIG_MX7) += mx7/
>> diff --git a/arch/arm/mach-imx/sip.c b/arch/arm/mach-imx/sip.c
>> new file mode 100644
>> index 0000000000..b724330d35
>> --- /dev/null
>> +++ b/arch/arm/mach-imx/sip.c
>> @@ -0,0 +1,23 @@
>> +/*
>> + * Copyright 2017 NXP
>> + *
>> + * SPDX-License-Identifier:	GPL-2.0+
>> + */
>> +
>> +#include <common.h>
>> +#include <asm/arch/sys_proto.h>
>> +
>> +unsigned long call_imx_sip(unsigned long id, unsigned long reg0,
>> +			   unsigned long reg1, unsigned long reg2)
>> +{
>> +	struct pt_regs regs;
>> +
>> +	regs.regs[0] = id;
>> +	regs.regs[1] = reg0;
>> +	regs.regs[2] = reg1;
>> +	regs.regs[3] = reg2;
>> +
>> +	smc_call(&regs);
>> +
>> +	return regs.regs[0];
>> +}
>> 
>
>Best regards,
>Stefano
>
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