History log of /rk3399_rockchip-uboot/arch/arm/mach-uniphier/arm64/lowlevel_init.S (Results 1 – 2 of 2)
Revision Date Author Comments
# fa8967cf 17-May-2017 Tom Rini <trini@konsulko.com>

Merge git://git.denx.de/u-boot-uniphier

- Add workaround code to make LD20 SoC boot from ARM Trusted Firmware
- Sync DT with Linux to fix DTC warnings
- Add new SoC support code
- Misc fix, updates


# 45f41c13 12-May-2017 Masahiro Yamada <yamada.masahiro@socionext.com>

ARM: uniphier: add weird workaround code for LD20

When booting from ARM Trusted Firmware, U-Boot runs in EL1-NS.
The boot flow is as follows:
BL1 -> BL2 -> BL31 -> BL33 (i.e. U-Boot)

This boot se

ARM: uniphier: add weird workaround code for LD20

When booting from ARM Trusted Firmware, U-Boot runs in EL1-NS.
The boot flow is as follows:
BL1 -> BL2 -> BL31 -> BL33 (i.e. U-Boot)

This boot sequence works fine for LD11 SoC (Cortex-A53), but LD20
SoC (Cortex-A72) hangs in U-Boot. The solution I found is to
read sctlr_el1 and write back the value as-is. This should be
no effect, but surprisingly fixes the problem for LD20 to boot.
I do not know why.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

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