3 commits

Author	SHA1	Message	Date
Carlo Caione	6531d1c649	arch: arm64: Enable config option to switch from EL3 to EL1 ... ARMv8-A SoCs enter EL3 after reset. Add a new config option (CONFIG_SWITCH_TO_EL1) to switch from EL3 to EL1 at boot and default it to 'y'. Signed-off-by: Carlo Caione <ccaione@baylibre.com>	2020-02-01 08:08:43 -05:00
Carlo Caione	528319bff7	arch: arm64: Support all the ELn ... While QEMU's Cortex-A53 emulation by default only emulates a CPU in EL1, other QEMU forks (for example the QEMU released by Xilinx) and real hardware starts in EL3. To support all the ELn we introduce a macro to identify at run-time the Exception Level and take the correct actions. Signed-off-by: Carlo Caione <ccaione@baylibre.com>	2020-02-01 08:08:43 -05:00
Carlo Caione	1be0c05311	arch: arm64: Introduce ARM64 (AArch64) architecture ... Introduce the basic ARM64 architecture support. A new CONFIG_ARM64 symbol is introduced for the new architecture and new cmake / Kconfig files are added to switch between ARM and ARM64. Signed-off-by: Carlo Caione <ccaione@baylibre.com>	2020-02-01 08:08:43 -05:00