diff options
| author | Marek Vasut <[email protected]> | 2026-03-16 00:54:05 +0100 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2026-03-27 13:29:31 -0600 |
| commit | d9eee3d17882ec40f8ca5e231046bbf287ab4369 (patch) | |
| tree | fae19e970eea019143c8f152fc507c70601aa578 /Kconfig | |
| parent | e20405860790d344035464e29e0eb237b42284ea (diff) | |
arm: relocate: Introduce data-only relocation mode
Introduce new mode of relocation which relocates only data, not code.
This is mainly meant to relocate data to read-write portion of the RAM,
while the code remains in read-only portion of the RAM from which it is
allowed to execute. This split configuration is present on various secure
cores.
The result of the relocation is U-Boot running at its original address,
data relocated to the end of DRAM, but with added read-write area offset.
The U-Boot binary area is not reserved from the end of the DRAM in this
relocation mode, because U-Boot itself is not relocated.
Signed-off-by: Marek Vasut <[email protected]>
Diffstat (limited to 'Kconfig')
| -rw-r--r-- | Kconfig | 17 |
1 files changed, 17 insertions, 0 deletions
@@ -474,6 +474,23 @@ config SKIP_RELOCATE Skips relocation of U-Boot allowing for systems that have extremely limited RAM to run U-Boot. +config SKIP_RELOCATE_CODE + bool "Skips relocation of U-Boot code to end of RAM" + help + Skips relocation of U-Boot code to the end of RAM, but still does + relocate data to the end of RAM. This is mainly meant to relocate + data to read-write portion of the RAM, while the code remains in + read-only portion of the RAM from which it is allowed to execute. + This split configuration is present on various secure cores. + +config SKIP_RELOCATE_CODE_DATA_OFFSET + hex "Offset of read-write data memory from read-only text memory" + default 0x0 + depends on SKIP_RELOCATE_CODE + help + Offset of the read-write memory which contains data, from read-only + memory which contains executable text. + endif # EXPERT config PHYS_64BIT |