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Peter Hoyes 53b40e8d54 armv8: Disable pointer authentication traps for EL1 
The use of ARMv8.3 pointer authentication (PAuth) is governed by fields
in HCR_EL2, which trigger a 'trap to EL2' if not enabled. The reset
value of these fields is 'architecturally unknown' so we must ensure
that the fields are enabled (to disable the traps) if we are entering
the kernel at EL1.

The APK field disables PAuth instruction traps and the API field
disables PAuth register traps

Add code to disable the traps in armv8_switch_to_el1_m. Prior to doing
so, it checks fields in the ID_AA64ISAR1_EL1 register to ensure pointer
authentication is supported by the hardware.

The runtime checks require a second temporary register, so add this to
the EL1 transition macro signature and update 2 call sites.

Signed-off-by: Peter Hoyes <Peter.Hoyes@arm.com>
2021-09-02 10:17:45 -04:00
..
cpu armv8: Disable pointer authentication traps for EL1 2021-09-02 10:17:45 -04:00
dts board: stemmy: Add basic Fastboot support 2021-09-01 19:25:37 -04:00
include armv8: Disable pointer authentication traps for EL1 2021-09-02 10:17:45 -04:00
lib armv7: Add Position Independent Execution support 2021-09-02 09:48:20 -04:00
mach-aspeed common: Drop asm/global_data.h from common header 2021-02-02 15:33:42 -05:00
mach-at91 Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-bcm283x reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
mach-bcmstb
mach-cortina
mach-davinci davinci: Drop CONFIG_MAC_ADDR_IN_EEPROM 2021-08-30 14:10:05 -04:00
mach-exynos Kconfig: Use spaces not tabs in Kconfig entires 2021-08-30 14:13:28 -04:00
mach-highbank
mach-imx Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-integrator
mach-ipq40xx dm: treewide: Rename auto_alloc_size members to be shorter 2020-12-13 08:00:25 -07:00
mach-k3 arm: mach-k3: Cleanup common start_non_linux_remote_cores() 2021-07-27 11:00:44 +05:30
mach-keystone global: Convert simple_strtoul() with decimal to dectoul() 2021-08-02 13:32:14 -04:00
mach-kirkwood Convert CONFIG_SYS_I2C_SPEED et al to Kconfig 2021-08-30 14:10:07 -04:00
mach-lpc32xx arm: lpc32xx: add EA LPC3250 DevKitv2 board support 2021-07-06 14:12:14 -04:00
mach-mediatek Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-meson Revert "ARM: meson: Add support for fastboot_set_reboot_flag()" 2021-07-30 14:54:03 +02:00
mach-mvebu Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-nexell global: Convert simple_strtoul() with decimal to dectoul() 2021-08-02 13:32:14 -04:00
mach-octeontx reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
mach-octeontx2 reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
mach-omap2 Convert CONFIG_SKIP_LOWLEVEL_INIT et al to Kconfig 2021-08-31 17:47:49 -04:00
mach-orion5x Convert CONFIG_SKIP_LOWLEVEL_INIT et al to Kconfig 2021-08-31 17:47:49 -04:00
mach-owl reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
mach-qemu qemu: arm: Initialise virtio devices in board_late_init 2020-12-31 14:41:31 +01:00
mach-rmobile Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-rockchip Convert CONFIG_SKIP_LOWLEVEL_INIT et al to Kconfig 2021-08-31 17:47:49 -04:00
mach-s5pc1xx
mach-snapdragon arm: mach-snapdrgon: misc: Simplify msm_generate_mac_addr() 2021-09-02 09:48:20 -04:00
mach-socfpga arm: socfpga: Enable Intel N5X device build 2021-08-25 15:26:38 +08:00
mach-sti
mach-stm32 Rename DRIVERS_MISC_SUPPORT to DRIVERS_MISC 2021-07-28 14:29:37 -04:00
mach-stm32mp Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-sunxi Kconfig: Remove all default n/no options 2021-08-31 17:47:49 -04:00
mach-tegra Convert CONFIG_SKIP_LOWLEVEL_INIT et al to Kconfig 2021-08-31 17:47:49 -04:00
mach-u8500 board: stemmy: Update documentation 2021-09-01 19:25:37 -04:00
mach-uniphier global: Convert simple_strtoul() with hex to hextoul() 2021-08-02 13:32:14 -04:00
mach-versal arm: Migrate GICV2 / GICV3 to Kconfig 2021-08-30 14:13:26 -04:00
mach-versatile
mach-zynq reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
mach-zynqmp xilinx: zynqmp: Update descriptions for u-boot.its 2021-08-26 08:14:43 +02:00
mach-zynqmp-r5 reset: Remove addr parameter from reset_cpu() 2021-03-02 14:03:02 -05:00
thumb1/include/asm/proc-armv
config.mk imx: Finish migration of IMX_CONFIG to Kconfig 2021-08-31 17:46:37 -04:00
Kconfig armv7: Add Position Independent Execution support 2021-09-02 09:48:20 -04:00
Kconfig.debug
Makefile arm: imx: basic i.MX8ULP support 2021-08-09 14:46:50 +02:00