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arm64: Mention 4K aligned load addresses in the PIE Kconfig help

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Mention the requirement of 4K aligned load addresses in the
help section for the POSITION_INDEPENDENT option.

Suggested-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Edgar E. Iglesias
2020-09-09 19:07:24 +02:00
committed by Michal Simek
parent ba2a0cbb05
commit 11f4fbf0d4
1 changed files with 2 additions and 2 deletions
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arch/arm/Kconfig
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@@ -16,8 +16,8 @@ config POSITION_INDEPENDENT
help
U-Boot expects to be linked to a specific hard-coded address, and to
be loaded to and run from that address. This option lifts that
restriction, thus allowing the code to be loaded to and executed
from almost any address. This logic relies on the relocation
restriction, thus allowing the code to be loaded to and executed from
almost any 4K aligned address. This logic relies on the relocation
information that is embedded in the binary to support U-Boot
relocating itself to the top-of-RAM later during execution.