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arch: riscv: introduce CONFIG_RISCV_GP_PURPOSE choice

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Introduce `CONFIG_RISCV_GP_PURPOSE` choice to make sure that only
one of `CONFIG_RISCV_GP` or `CONFIG_RISCV_CURRENT_VIA_GP` can be
enabled, instead of relying of dependencies.

To do that, introduce a new
`CONFIG_RISCV_SOC_HAS_GP_RELATIVE_ADDRESSING` that can be selected
by SoC when it implemented global pointer (GP) initialization for
relative addressing in its linker.

`CONFIG_RISCV_GP` will be the default choice when
`CONFIG_RISCV_SOC_HAS_GP_RELATIVE_ADDRESSING=y`

Signed-off-by: Yong Cong Sin <ycsin@meta.com>
Signed-off-by: Yong Cong Sin <yongcong.sin@gmail.com>
This commit is contained in:
Yong Cong Sin 2024-11-25 12:54:01 +08:00 • committed by Benjamin Cabé
commit e6dd68ec89
37 changed files with 33 additions and 56 deletions
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soc/renode/riscv_virtual/Kconfig
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@ -13,4 +13,5 @@ config SOC_RISCV_VIRTUAL_RENODE
select RISCV_ISA_EXT_ZICSR
select RISCV_ISA_EXT_ZIFENCEI
select RISCV_HAS_PLIC
select RISCV_SOC_HAS_GP_RELATIVE_ADDRESSING
imply XIP