mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 15:37:23 +00:00
573a3811ed
If the system is running PSCI firmware, the System Reset function (func ID: 0x80000009) is supposed to be handled by PSCI, that is, the SoC/board specific reset implementation should be moved to PSCI. U-Boot should call the PSCI service according to the arm-smccc manner. The arm-smccc is supported on ARMv7 or later. Especially, ARMv8 generation SoCs are likely to run ARM Trusted Firmware BL31. In this case, U-Boot is a non-secure world boot loader, so it should not be able to reset the system directly. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
103 lines
3.4 KiB
C
103 lines
3.4 KiB
C
/*
|
|
* ARM Power State and Coordination Interface (PSCI) header
|
|
*
|
|
* This header holds common PSCI defines and macros shared
|
|
* by: ARM kernel, ARM64 kernel, KVM ARM/ARM64 and user space.
|
|
*
|
|
* Copyright (C) 2014 Linaro Ltd.
|
|
* Author: Anup Patel <anup.patel@linaro.org>
|
|
*/
|
|
|
|
#ifndef _UAPI_LINUX_PSCI_H
|
|
#define _UAPI_LINUX_PSCI_H
|
|
|
|
/*
|
|
* PSCI v0.1 interface
|
|
*
|
|
* The PSCI v0.1 function numbers are implementation defined.
|
|
*
|
|
* Only PSCI return values such as: SUCCESS, NOT_SUPPORTED,
|
|
* INVALID_PARAMS, and DENIED defined below are applicable
|
|
* to PSCI v0.1.
|
|
*/
|
|
|
|
/* PSCI v0.2 interface */
|
|
#define PSCI_0_2_FN_BASE 0x84000000
|
|
#define PSCI_0_2_FN(n) (PSCI_0_2_FN_BASE + (n))
|
|
#define PSCI_0_2_64BIT 0x40000000
|
|
#define PSCI_0_2_FN64_BASE \
|
|
(PSCI_0_2_FN_BASE + PSCI_0_2_64BIT)
|
|
#define PSCI_0_2_FN64(n) (PSCI_0_2_FN64_BASE + (n))
|
|
|
|
#define PSCI_0_2_FN_PSCI_VERSION PSCI_0_2_FN(0)
|
|
#define PSCI_0_2_FN_CPU_SUSPEND PSCI_0_2_FN(1)
|
|
#define PSCI_0_2_FN_CPU_OFF PSCI_0_2_FN(2)
|
|
#define PSCI_0_2_FN_CPU_ON PSCI_0_2_FN(3)
|
|
#define PSCI_0_2_FN_AFFINITY_INFO PSCI_0_2_FN(4)
|
|
#define PSCI_0_2_FN_MIGRATE PSCI_0_2_FN(5)
|
|
#define PSCI_0_2_FN_MIGRATE_INFO_TYPE PSCI_0_2_FN(6)
|
|
#define PSCI_0_2_FN_MIGRATE_INFO_UP_CPU PSCI_0_2_FN(7)
|
|
#define PSCI_0_2_FN_SYSTEM_OFF PSCI_0_2_FN(8)
|
|
#define PSCI_0_2_FN_SYSTEM_RESET PSCI_0_2_FN(9)
|
|
|
|
#define PSCI_0_2_FN64_CPU_SUSPEND PSCI_0_2_FN64(1)
|
|
#define PSCI_0_2_FN64_CPU_ON PSCI_0_2_FN64(3)
|
|
#define PSCI_0_2_FN64_AFFINITY_INFO PSCI_0_2_FN64(4)
|
|
#define PSCI_0_2_FN64_MIGRATE PSCI_0_2_FN64(5)
|
|
#define PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU PSCI_0_2_FN64(7)
|
|
|
|
/* PSCI v0.2 power state encoding for CPU_SUSPEND function */
|
|
#define PSCI_0_2_POWER_STATE_ID_MASK 0xffff
|
|
#define PSCI_0_2_POWER_STATE_ID_SHIFT 0
|
|
#define PSCI_0_2_POWER_STATE_TYPE_SHIFT 16
|
|
#define PSCI_0_2_POWER_STATE_TYPE_MASK \
|
|
(0x1 << PSCI_0_2_POWER_STATE_TYPE_SHIFT)
|
|
#define PSCI_0_2_POWER_STATE_AFFL_SHIFT 24
|
|
#define PSCI_0_2_POWER_STATE_AFFL_MASK \
|
|
(0x3 << PSCI_0_2_POWER_STATE_AFFL_SHIFT)
|
|
|
|
/* PSCI v0.2 affinity level state returned by AFFINITY_INFO */
|
|
#define PSCI_0_2_AFFINITY_LEVEL_ON 0
|
|
#define PSCI_0_2_AFFINITY_LEVEL_OFF 1
|
|
#define PSCI_0_2_AFFINITY_LEVEL_ON_PENDING 2
|
|
|
|
/* PSCI v0.2 multicore support in Trusted OS returned by MIGRATE_INFO_TYPE */
|
|
#define PSCI_0_2_TOS_UP_MIGRATE 0
|
|
#define PSCI_0_2_TOS_UP_NO_MIGRATE 1
|
|
#define PSCI_0_2_TOS_MP 2
|
|
|
|
/* PSCI version decoding (independent of PSCI version) */
|
|
#define PSCI_VERSION_MAJOR_SHIFT 16
|
|
#define PSCI_VERSION_MINOR_MASK \
|
|
((1U << PSCI_VERSION_MAJOR_SHIFT) - 1)
|
|
#define PSCI_VERSION_MAJOR_MASK ~PSCI_VERSION_MINOR_MASK
|
|
#define PSCI_VERSION_MAJOR(ver) \
|
|
(((ver) & PSCI_VERSION_MAJOR_MASK) >> PSCI_VERSION_MAJOR_SHIFT)
|
|
#define PSCI_VERSION_MINOR(ver) \
|
|
((ver) & PSCI_VERSION_MINOR_MASK)
|
|
|
|
/* PSCI return values (inclusive of all PSCI versions) */
|
|
#define PSCI_RET_SUCCESS 0
|
|
#define PSCI_RET_NOT_SUPPORTED -1
|
|
#define PSCI_RET_INVALID_PARAMS -2
|
|
#define PSCI_RET_DENIED -3
|
|
#define PSCI_RET_ALREADY_ON -4
|
|
#define PSCI_RET_ON_PENDING -5
|
|
#define PSCI_RET_INTERNAL_FAILURE -6
|
|
#define PSCI_RET_NOT_PRESENT -7
|
|
#define PSCI_RET_DISABLED -8
|
|
|
|
#ifdef CONFIG_ARM_PSCI_FW
|
|
typedef unsigned long (psci_fn)(unsigned long, unsigned long,
|
|
unsigned long, unsigned long);
|
|
|
|
extern psci_fn *invoke_psci_fn;
|
|
#else
|
|
unsigned long invoke_psci_fn(unsigned long a0, unsigned long a1,
|
|
unsigned long a2, unsigned long a3)
|
|
{
|
|
return PSCI_RET_DISABLED;
|
|
}
|
|
#endif
|
|
|
|
#endif /* _UAPI_LINUX_PSCI_H */
|