mirror of
https://github.com/u-boot/u-boot.git
synced 2025-04-17 02:15:02 +00:00
ebc84d7b60
Polling cntpct_el0 in a tight loop for delays is inefficient. This is particularly apparent on Arm FVPs, which do not simulate real time, meaning that a 1s sleep can take a couple of orders of magnitude longer to execute in wall time. If running at EL2 or above (where CNTHCTL_EL2 is available), enable the cntpct_el0 event stream temporarily and use wfe to implement the delay more efficiently. The event period is chosen as a trade-off between efficiency and the fact that Arm FVPs do not typically simulate real time. This is only implemented for Armv8 boards, where an architectural timer exists, and only enabled by default for the ARCH_VEXPRESS64 board family. Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com> Reviewed-by: Andre Przywara <andre.przywara@arm.com>
217 lines
7.5 KiB
Text
217 lines
7.5 KiB
Text
if ARM64
|
|
|
|
config CMO_BY_VA_ONLY
|
|
bool "Force cache maintenance to be exclusively by VA"
|
|
depends on !SYS_DISABLE_DCACHE_OPS
|
|
|
|
config ARMV8_SPL_EXCEPTION_VECTORS
|
|
bool "Install crash dump exception vectors"
|
|
depends on SPL
|
|
help
|
|
The default exception vector table is only used for the crash
|
|
dump, but still takes quite a lot of space in the image size.
|
|
|
|
Say N here if you are running out of code space in the image
|
|
and want to save some space at the cost of less debugging info.
|
|
|
|
config ARMV8_MULTIENTRY
|
|
bool "Enable multiple CPUs to enter into U-Boot"
|
|
|
|
config ARMV8_SET_SMPEN
|
|
bool "Enable data coherency with other cores in cluster"
|
|
help
|
|
Say Y here if there is not any trust firmware to set
|
|
CPUECTLR_EL1.SMPEN bit before U-Boot.
|
|
|
|
For A53, it enables data coherency with other cores in the
|
|
cluster, and for A57/A72, it enables receiving of instruction
|
|
cache and TLB maintenance operations.
|
|
Cortex A53/57/72 cores require CPUECTLR_EL1.SMPEN set even
|
|
for single core systems. Unfortunately write access to this
|
|
register may be controlled by EL3/EL2 firmware. To be more
|
|
precise, by default (if there is EL2/EL3 firmware running)
|
|
this register is RO for NS EL1.
|
|
This switch can be used to avoid writing to CPUECTLR_EL1,
|
|
it can be safely enabled when EL2/EL3 initialized SMPEN bit
|
|
or when CPU implementation doesn't include that register.
|
|
|
|
config ARMV8_SWITCH_TO_EL1
|
|
bool "Enable switching to running in EL1"
|
|
help
|
|
In some circumstances we need to switch to running in EL1.
|
|
Enable this option to have U-Boot switch to EL1.
|
|
|
|
config ARMV8_SPIN_TABLE
|
|
bool "Support spin-table enable method"
|
|
depends on ARMV8_MULTIENTRY && OF_LIBFDT
|
|
help
|
|
Say Y here to support "spin-table" enable method for booting Linux.
|
|
|
|
To use this feature, you must do:
|
|
- Specify enable-method = "spin-table" in each CPU node in the
|
|
Device Tree you are using to boot the kernel
|
|
- Bring secondary CPUs into U-Boot proper in a board specific
|
|
manner. This must be done *after* relocation. Otherwise, the
|
|
secondary CPUs will spin in unprotected memory area because the
|
|
master CPU protects the relocated spin code.
|
|
|
|
U-Boot automatically does:
|
|
- Set "cpu-release-addr" property of each CPU node
|
|
(overwrites it if already exists).
|
|
- Reserve the code for the spin-table and the release address
|
|
via a /memreserve/ region in the Device Tree.
|
|
|
|
menu "ARMv8 secure monitor firmware"
|
|
config ARMV8_SEC_FIRMWARE_SUPPORT
|
|
bool "Enable ARMv8 secure monitor firmware framework support"
|
|
select FIT
|
|
select OF_LIBFDT
|
|
help
|
|
This framework is aimed at making secure monitor firmware load
|
|
process brief.
|
|
Note: Only FIT format image is supported.
|
|
You should prepare and provide the below information:
|
|
- Address of secure firmware.
|
|
- Address to hold the return address from secure firmware.
|
|
- Secure firmware FIT image related information.
|
|
Such as: SEC_FIRMWARE_FIT_IMAGE and SEC_FIRMWARE_FIT_CNF_NAME
|
|
- The target exception level that secure monitor firmware will
|
|
return to.
|
|
|
|
config SPL_ARMV8_SEC_FIRMWARE_SUPPORT
|
|
bool "Enable ARMv8 secure monitor firmware framework support for SPL"
|
|
depends on SPL
|
|
select SPL_FIT
|
|
select SPL_OF_LIBFDT
|
|
help
|
|
Say Y here to support this framework in SPL phase.
|
|
|
|
config SPL_RECOVER_DATA_SECTION
|
|
bool "save/restore SPL data section"
|
|
depends on SPL
|
|
help
|
|
Say Y here to save SPL data section for cold boot, and restore
|
|
at warm boot in SPL phase.
|
|
|
|
config SEC_FIRMWARE_ARMV8_PSCI
|
|
bool "PSCI implementation in secure monitor firmware"
|
|
depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT
|
|
depends on ARMV8_PSCI=n
|
|
help
|
|
This config enables the ARMv8 PSCI implementation in secure monitor
|
|
firmware. This is a private PSCI implementation and different from
|
|
those implemented under the common ARMv8 PSCI framework.
|
|
|
|
config ARMV8_SEC_FIRMWARE_ERET_ADDR_REVERT
|
|
bool "ARMv8 secure monitor firmware ERET address byteorder swap"
|
|
depends on ARMV8_SEC_FIRMWARE_SUPPORT || SPL_ARMV8_SEC_FIRMWARE_SUPPORT
|
|
help
|
|
Say Y here when the endianness of the register or memory holding the
|
|
Secure firmware exception return address is different with core's.
|
|
|
|
endmenu
|
|
|
|
config PSCI_RESET
|
|
bool "Use PSCI for reset and shutdown"
|
|
default y
|
|
select ARM_SMCCC if OF_CONTROL
|
|
depends on !ARCH_APPLE && !ARCH_BCM283X && !ARCH_EXYNOS7 && \
|
|
!TARGET_LS2080AQDS && \
|
|
!TARGET_LS2080ARDB && !TARGET_LS2080A_EMU && \
|
|
!TARGET_LS1088ARDB && !TARGET_LS1088AQDS && \
|
|
!TARGET_LS1012ARDB && !TARGET_LS1012AFRDM && \
|
|
!TARGET_LS1012A2G5RDB && !TARGET_LS1012AQDS && \
|
|
!TARGET_LS1012AFRWY && \
|
|
!TARGET_LS1028ARDB && !TARGET_LS1028AQDS && \
|
|
!TARGET_LS1043ARDB && !TARGET_LS1043AQDS && \
|
|
!TARGET_LS1046ARDB && !TARGET_LS1046AQDS && \
|
|
!TARGET_LS1046AFRWY && \
|
|
!TARGET_LS2081ARDB && !TARGET_LX2160ARDB && \
|
|
!TARGET_LX2160AQDS && !TARGET_LX2162AQDS && \
|
|
!ARCH_UNIPHIER
|
|
help
|
|
Most armv8 systems have PSCI support enabled in EL3, either through
|
|
ARM Trusted Firmware or other firmware.
|
|
|
|
On these systems, we do not need to implement system reset manually,
|
|
but can instead rely on higher level firmware to deal with it.
|
|
|
|
Select Y here to make use of PSCI calls for system reset
|
|
|
|
config SYS_HAS_ARMV8_SECURE_BASE
|
|
bool
|
|
|
|
config ARMV8_PSCI
|
|
bool "Enable PSCI support" if EXPERT
|
|
help
|
|
PSCI is Power State Coordination Interface defined by ARM.
|
|
The PSCI in U-Boot provides a general framework and each platform
|
|
can implement their own specific PSCI functions.
|
|
Say Y here to enable PSCI support on ARMv8 platform.
|
|
|
|
config ARMV8_PSCI_NR_CPUS
|
|
int "Maximum supported CPUs for PSCI"
|
|
depends on ARMV8_PSCI
|
|
default 4
|
|
help
|
|
The maximum number of CPUs supported in the PSCI firmware.
|
|
It is no problem to set a larger value than the number of CPUs in
|
|
the actual hardware implementation.
|
|
|
|
config ARMV8_PSCI_CPUS_PER_CLUSTER
|
|
int "Number of CPUs per cluster"
|
|
depends on ARMV8_PSCI
|
|
default 0
|
|
help
|
|
The number of CPUs per cluster, suppose each cluster has same number
|
|
of CPU cores, platforms with asymmetric clusters don't apply here.
|
|
A value 0 or no definition of it works for single cluster system.
|
|
System with multi-cluster should difine their own exact value.
|
|
|
|
config ARMV8_PSCI_RELOCATE
|
|
bool "Relocate PSCI code"
|
|
depends on ARMV8_PSCI
|
|
depends on SYS_HAS_ARMV8_SECURE_BASE
|
|
help
|
|
Relocate PSCI code, for example to a secure memory on the SoC. If not
|
|
set, the PSCI sections are placed together with the u-boot and the
|
|
regions will be marked as reserved before linux is started.
|
|
|
|
config ARMV8_SECURE_BASE
|
|
hex "Secure address for PSCI image"
|
|
depends on ARMV8_PSCI_RELOCATE
|
|
default 0x18000000 if ARCH_LS1028A
|
|
help
|
|
Address for placing the PSCI text, data and stack sections.
|
|
|
|
|
|
config ARMV8_EA_EL3_FIRST
|
|
bool "External aborts and SError interrupt exception are taken in EL3"
|
|
help
|
|
Exception handling at all exception levels for External Abort and
|
|
SError interrupt exception are taken in EL3.
|
|
|
|
config ARMV8_UDELAY_EVENT_STREAM
|
|
bool "Use the event stream for udelay"
|
|
default y if ARCH_VEXPRESS64
|
|
help
|
|
Use the event stream provided by the AArch64 architectural timer for
|
|
delays. This is more efficient than the default polling
|
|
implementation.
|
|
|
|
menuconfig ARMV8_CRYPTO
|
|
bool "ARM64 Accelerated Cryptographic Algorithms"
|
|
|
|
if ARMV8_CRYPTO
|
|
|
|
config ARMV8_CE_SHA1
|
|
bool "SHA-1 digest algorithm (ARMv8 Crypto Extensions)"
|
|
default y if SHA1
|
|
|
|
config ARMV8_CE_SHA256
|
|
bool "SHA-256 digest algorithm (ARMv8 Crypto Extensions)"
|
|
default y if SHA256
|
|
|
|
endif
|
|
|
|
endif
|