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Revert "riscv: Remove CONFIG_PHYS_RAM_BASE_FIXED"

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This reverts commit 9b79878ced.

The removal of this config exposes CONFIG_PHYS_RAM_BASE for all kernel
types: this value being implementation-specific, this breaks the
genericity of the RISC-V kernel so revert it.

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Tested-by: Emil Renner Berthing <kernel@esmil.dk>
Reviewed-by: Jisheng Zhang <jszhang@kernel.org>
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Alexandre Ghiti 2021-07-21 09:59:36 +02:00 committed by Palmer Dabbelt
parent 6d7f91d914
commit 867432bec1
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1 changed files with 6 additions and 0 deletions
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arch/riscv/Kconfig
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@ -495,8 +495,13 @@ config STACKPROTECTOR_PER_TASK
depends on !GCC_PLUGIN_RANDSTRUCT
depends on STACKPROTECTOR && CC_HAVE_STACKPROTECTOR_TLS
config PHYS_RAM_BASE_FIXED
bool "Explicitly specified physical RAM address"
default n
config PHYS_RAM_BASE
hex "Platform Physical RAM address"
depends on PHYS_RAM_BASE_FIXED
default "0x80000000"
help
This is the physical address of RAM in the system. It has to be
@ -509,6 +514,7 @@ config XIP_KERNEL
# This prevents XIP from being enabled by all{yes,mod}config, which
# fail to build since XIP doesn't support large kernels.
depends on !COMPILE_TEST
select PHYS_RAM_BASE_FIXED
help
Execute-In-Place allows the kernel to run from non-volatile storage
directly addressable by the CPU, such as NOR flash. This saves RAM