diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2020-09-30 17:39:18 +0100 |
|---|---|---|
| committer | Jun Nie <jun.nie@linaro.org> | 2021-03-04 17:39:19 +0800 |
| commit | cd8abc2fdae2b6173b8eaca27e4480323f6bb151 (patch) | |
| tree | 5fd5795a951cb462a6d17fb6a8612a0e77b08e42 | |
| parent | 2ef2859b6ae34980fba7744ac7fd3426a86fbad1 (diff) | |
qemu-arm64: Enable POSITION_INDEPENDENTrel_imx_5.4.70_2.3.0-imx8mp-2020.04+efi
Now that PIE works when U-Boot is started from ROM, let's enable
CONFIG_POSITION_INDEPENDENT, which allows to load U-Boot also via
ARM Trusted-Firmware's fip.bin to DRAM, without tweaking the
configuration.
To get a writable initial stack, we need to keep the fixed initial
stack pointer, which points to DRAM in our case.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
| -rw-r--r-- | arch/arm/Kconfig | 2 | ||||
| -rw-r--r-- | configs/qemu_arm64_defconfig | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index fca24e0a25..9382c79895 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -23,6 +23,8 @@ config POSITION_INDEPENDENT config INIT_SP_RELATIVE bool "Specify the early stack pointer relative to the .bss section" + default n if ARCH_QEMU + default y if POSITION_INDEPENDENT help U-Boot typically uses a hard-coded value for the stack pointer before relocation. Enable this option to instead calculate the diff --git a/configs/qemu_arm64_defconfig b/configs/qemu_arm64_defconfig index 8f5ff57299..6c4bb060f4 100644 --- a/configs/qemu_arm64_defconfig +++ b/configs/qemu_arm64_defconfig @@ -1,5 +1,7 @@ CONFIG_ARM=y CONFIG_ARCH_QEMU=y +CONFIG_NR_DRAM_BANKS=1 +CONFIG_POSITION_INDEPENDENT=y CONFIG_ENV_SIZE=0x40000 CONFIG_ENV_SECT_SIZE=0x40000 CONFIG_TARGET_QEMU_ARM_64BIT=y |