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imx: add sip function

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Add SiP (Silicon Provider) services function to issue
SMC call to Arm Trusted Firmware.

More SiP information could be found in
  https://github.com/ARM-software/arm-trusted-firmware/blob/master/
  docs/arm-sip-service.rst

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
This commit is contained in:
Peng Fan 2018-01-10 13:20:23 +08:00 committed by Stefano Babic
parent bb0fabe42d
commit de274663f5
4 changed files with 42 additions and 0 deletions
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3
arch/arm/include/asm/mach-imx/sys_proto.h
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@ -126,4 +126,7 @@ 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

2
arch/arm/mach-imx/Makefile
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@ -124,6 +124,8 @@ 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/

23
arch/arm/mach-imx/sip.c Normal file
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@ -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];
}

14
include/imx_sip.h Normal file
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@ -0,0 +1,14 @@
/*
* Copyright 2017 NXP
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _IMX_SIP_H__
#define _IMX_SIP_H_
#define IMX_SIP_SRC 0xC2000005
#define IMX_SIP_SRC_M4_START 0x00
#define IMX_SIP_SRC_M4_STARTED 0x01
#endif