diff options
| author | Andre Przywara <andre.przywara@arm.com> | 2020-09-30 15:45:07 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2020-10-08 11:42:36 -0400 |
| commit | cee2e022d208e2dd9c10d1d6845941e37cfe3e3a (patch) | |
| tree | 64ba746732584f8d091f2257104790a63eb9fa36 | |
| parent | fc6ef71a66bf1d085fd802331462eb33882597fd (diff) | |
| download | u-boot-cee2e022d208e2dd9c10d1d6845941e37cfe3e3a.tar.gz | |
arm: Kconfig: Explain TFABOOT
The CONFIG_TFABOOT option is more about what U-Boot DOES NOT need to do
than to support some features.
Explain a bit more in the Kconfig help text to avoid misunderstandings.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
| -rw-r--r-- | arch/arm/Kconfig | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index abbc89a889..2e08e9907a 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1801,8 +1801,13 @@ config TFABOOT depends on ARCH_SUPPORT_TFABOOT default n help - Enabling this will make a U-Boot binary that is capable of being - booted via TF-A (Trusted Firmware for Cortex-A). + Some platforms support the setup of secure registers (for instance + for CPU errata handling) or provide secure services like PSCI. + Those services could also be provided by other firmware parts + like TF-A (Trusted Firmware for Cortex-A), in which case U-Boot + does not need to (and cannot) execute this code. + Enabling this option will make a U-Boot binary that is relying + on other firmware layers to provide secure functionality. config TI_SECURE_DEVICE bool "HS Device Type Support" |