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rockchip: add rockchip smccc support 

It supports rockchip platforms individual conversation
between U-Boot and ATF via ARM SMCCC.

Change-Id: I75077219f409e075bd3d0b312b2d85c205d6a96f
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
This commit is contained in:
Joseph Chen 2017-11-27 16:56:36 +08:00 committed by Kever Yang
parent ed837edf98
commit f270a3f8f1
4 changed files with 74 additions and 0 deletions
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16
arch/arm/include/asm/arch-rockchip/rockchip_smccc.h Normal file
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@ -0,0 +1,16 @@
/*
* (C) Copyright 2017 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ROCKCHIP_SMCCC_H__
#define __ROCKCHIP_SMCCC_H__
/* Stand PSCI system suspend */
int psci_system_suspend(unsigned long unused);
int sip_smc_set_suspend_mode(unsigned long ctrl,
unsigned long config1,
unsigned long config2);
#endif

6
arch/arm/mach-rockchip/Kconfig
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@ -310,6 +310,12 @@ config ROCKCHIP_VENDOR_PARTITION
This enable support to read/write vendor configuration data from/to
this partition
config ROCKCHIP_SMCCC
bool "Rockchip SMCCC"
default y if ARM_SMCCC
help
This enable support for Rockchip SMC calls
config GICV2
bool "ARM GICv2"

2
arch/arm/mach-rockchip/Makefile
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@ -31,6 +31,8 @@ ifneq ($(CONFIG_ROCKCHIP_BOOT_MODE_REG),0)
obj-y += boot_mode.o
endif
obj-$(CONFIG_ROCKCHIP_SMCCC) += rockchip_smccc.o
obj-$(CONFIG_ROCKCHIP_BLOCK_API) += blk.o
obj-$(CONFIG_ROCKCHIP_VENDOR_PARTITION) += vendor.o
obj-$(CONFIG_ROCKCHIP_PARAM) += rockchip_parameter.o

50
arch/arm/mach-rockchip/rockchip_smccc.c Normal file
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@ -0,0 +1,50 @@
/*
* (C) Copyright 2017 Rockchip Electronics Co., Ltd
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/arch/rockchip_smccc.h>
#include <asm/io.h>
#include <asm/psci.h>
#include <asm/suspend.h>
#include <linux/arm-smccc.h>
#ifdef CONFIG_ARM64
#define ARM_PSCI_1_0_SYSTEM_SUSPEND ARM_PSCI_1_0_FN64_SYSTEM_SUSPEND
#else
#define ARM_PSCI_1_0_SYSTEM_SUSPEND ARM_PSCI_1_0_FN_SYSTEM_SUSPEND
#endif
/* Rockchip platform SiP call ID */
#define SIP_SUSPEND_MODE 0x82000003
static struct arm_smccc_res __invoke_sip_fn_smc(unsigned long function_id,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2)
{
struct arm_smccc_res res;
arm_smccc_smc(function_id, arg0, arg1, arg2, 0, 0, 0, 0, &res);
return res;
}
int psci_system_suspend(unsigned long unused)
{
struct arm_smccc_res res;
res = __invoke_sip_fn_smc(ARM_PSCI_1_0_SYSTEM_SUSPEND,
virt_to_phys(cpu_resume), 0, 0);
return res.a0;
}
int sip_smc_set_suspend_mode(unsigned long ctrl,
unsigned long config1,
unsigned long config2)
{
struct arm_smccc_res res;
res = __invoke_sip_fn_smc(SIP_SUSPEND_MODE, ctrl, config1, config2);
return res.a0;
}