On Wednesday 14 September 2016 10:43 AM, Keerthy wrote:
On SoCs like DRA7, OMAP5 one cannot enable hypervisor mode directly from the u-boot because the ROM code puts the chip to supervisor mode after it jumps to boot loader.
Patch 1-4 enable LPAE.
Patch 5: Introduces a weak function which can be overridden specific to SoCs to switch to hypervisor mode.
Patch 6: overrides weak function in patch 1 switch cpu to hypervisor mode using the available ROM code hook early in the boot phase before the boot loader checks for hypervisor mode on OMAP5 based SoCs.
Tested on AM57XX-EVM, DRA7XX-EVM.
Tom,
Can you pull this series please.
Regards, Keerthy
Keerthy (6): omap: Remove hardcoding of mmu section shift to 20 omap: Set appropriate cache configuration for LPAE and non-LAPE cases configs: am57xx_evm_defconfig: Enable LPAE mode configs: dra7xx_evm_defconfig: Enable LPAE mode ARM: Introduce function to switch to hypervisor mode ARM: OMAP5+: Override switch_to_hypervisor function
arch/arm/cpu/armv7/omap-common/lowlevel_init.S | 24 +++++++++++++++++++++ arch/arm/cpu/armv7/omap-common/omap-cache.c | 29 ++++++++++++++++++++++---- arch/arm/cpu/armv7/start.S | 21 +++++++++++++++++++ arch/arm/include/asm/system.h | 4 ++++ configs/am57xx_evm_defconfig | 1 + configs/dra7xx_evm_defconfig | 1 + 6 files changed, 76 insertions(+), 4 deletions(-)