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ARM: rmobile: Add basic PSCI support for R8A779A0 V3U Falcon

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Enable basic PSCI support for R8A779A0 V3U Falcon

Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
This commit is contained in:
Hai Pham 2020-10-27 19:06:51 +07:00 committed by Marek Vasut
parent cdaa69c46e
commit 0beaae223d
3 changed files with 54 additions and 0 deletions
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4
arch/arm/mach-rmobile/Makefile
View file

@ -15,6 +15,10 @@ obj-$(CONFIG_RCAR_GEN2) += lowlevel_init_ca15.o cpu_info-rcar.o
obj-$(CONFIG_RCAR_GEN3) += lowlevel_init_gen3.o cpu_info-rcar.o memmap-gen3.o
obj-$(CONFIG_RZ_G2) += cpu_info-rzg.o
ifneq ($(CONFIG_R8A779A0),)
obj-$(CONFIG_ARMV8_PSCI) += psci-r8a779a0.o
endif
OBJCOPYFLAGS_u-boot-spl.srec := -O srec
quiet_cmd_objcopy = OBJCOPY $@
cmd_objcopy = $(OBJCOPY) --gap-fill=0x00 $(OBJCOPYFLAGS) \

49
arch/arm/mach-rmobile/psci-r8a779a0.c Normal file
View file

@ -0,0 +1,49 @@
// SPDX-License-Identifier: GPL-2.0
/*
* This file implements basic PSCI support for Renesas r8a779a0 SoC
*
* Copyright (C) 2020 Renesas Electronics Corp.
*
*/
#include <common.h>
#include <asm/io.h>
#include <asm/psci.h>
#include <asm/secure.h>
int __secure psci_features(u32 function_id, u32 psci_fid)
{
switch (psci_fid) {
case ARM_PSCI_0_2_FN_PSCI_VERSION:
case ARM_PSCI_0_2_FN_SYSTEM_RESET:
return 0x0;
}
/* case ARM_PSCI_0_2_FN_CPU_ON: */
/* case ARM_PSCI_0_2_FN_CPU_OFF: */
/* case ARM_PSCI_0_2_FN_AFFINITY_INFO: */
/* case ARM_PSCI_0_2_FN_MIGRATE_INFO_TYPE: */
/* case ARM_PSCI_0_2_FN_SYSTEM_OFF: */
return ARM_PSCI_RET_NI;
}
u32 __secure psci_version(void)
{
return ARM_PSCI_VER_0_2;
}
#define RST_BASE 0xE6160000 /* Domain0 */
#define RST_SRESCR0 (RST_BASE + 0x18)
#define RST_SPRES 0x5AA58000
void __secure __noreturn psci_system_reset(void)
{
writel(RST_SPRES, RST_SRESCR0);
while (1)
;
}
int psci_update_dt(void *fdt)
{
return 0;
}

1
configs/r8a779a0_falcon_defconfig
View file

@ -10,6 +10,7 @@ CONFIG_SPL_TEXT_BASE=0xe6338000
CONFIG_RCAR_GEN3=y
CONFIG_TARGET_FALCON=y
# CONFIG_PSCI_RESET is not set
CONFIG_ARMV8_PSCI=y
CONFIG_DEFAULT_DEVICE_TREE="r8a779a0-falcon-u-boot"
CONFIG_FIT=y
CONFIG_SUPPORT_RAW_INITRD=y