[U-Boot] [PATCH 0/6] ARM: Introduce function to switch to hypervisor mode and enable LPAE

Keerthy
2016-09-14T05:13:27Z

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.

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(-)

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1.9.1