The patch below does not apply to the 5.13-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 867432bec1c6e7df21a361d7f12022a8c5f54022 Mon Sep 17 00:00:00 2001
From: Alexandre Ghiti alex@ghiti.fr Date: Wed, 21 Jul 2021 09:59:36 +0200 Subject: [PATCH] Revert "riscv: Remove CONFIG_PHYS_RAM_BASE_FIXED"
This reverts commit 9b79878ced8f7ab85c57623f8b1f6882e484a316.
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
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 31f9e92f1402..4f7b70ae7c31 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -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