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From: Arnd Bergmann <arnd@kernel.org>
To: Russell King <linux@armlinux.org.uk>
Cc: linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
	Ard Biesheuvel <ardb@kernel.org>,
	Linus Walleij <linus.walleij@linaro.org>,
	Nathan Chancellor <nathan@kernel.org>,
	Nick Desaulniers <ndesaulniers@google.com>,
	llvm@lists.linux.dev, Nicolas Pitre <nico@linaro.org>
Subject: [PATCH 12/14] ARM: add CONFIG_PHYS_OFFSET default values
Date: Tue, 28 Sep 2021 17:41:41 +0200	[thread overview]
Message-ID: <20210928154143.2106903-13-arnd@kernel.org> (raw)
In-Reply-To: <20210928154143.2106903-1-arnd@kernel.org>

From: Arnd Bergmann <arnd@arndb.de>

For platforms that are not yet converted to ARCH_MULTIPLATFORM,
we can disable CONFIG_ARM_PATCH_PHYS_VIRT, which in turn requires
setting a correct address here.

As we actualy know what all the values are supposed to be based
on the old mach/memory.h header file contents (from git history),
we can just add them here.

This also solves a problem in Kconfig where 'make randconfig'
fails to continue if no number is selected for a 'hex' option.
Users can still override the number at configuration time, e.g.
when the memory visible to the kernel starts at a nonstandard
address on some machine, but it should no longer be required
now.

I originally posted this back in 2016, but the problem still
persists. The patch has gotten much simpler though, as almost
all platforms rely on ARM_PATCH_PHYS_VIRT now.

Acked-by: Nicolas Pitre <nico@linaro.org>
Link: https://lore.kernel.org/linux-arm-kernel/1455804123-2526139-5-git-send-email-arnd@arndb.de/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm/Kconfig | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 12a0bd4b315d..0d4f3e2d50ad 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -264,10 +264,12 @@ config PHYS_OFFSET
 	hex "Physical address of main memory" if MMU
 	depends on !ARM_PATCH_PHYS_VIRT
 	default DRAM_BASE if !MMU
-	default 0x00000000 if ARCH_FOOTBRIDGE
+	default 0x00000000 if ARCH_FOOTBRIDGE || ARCH_IXP4XX
 	default 0x10000000 if ARCH_OMAP1 || ARCH_RPC
-	default 0x20000000 if ARCH_S5PV210
-	default 0xc0000000 if ARCH_SA1100
+	default 0x30000000 if ARCH_S3C24XX
+	default 0xa0000000 if ARCH_IOP32X || ARCH_PXA
+	default 0xc0000000 if ARCH_EP93XX || ARCH_SA1100
+	default 0
 	help
 	  Please provide the physical address corresponding to the
 	  location of main memory in your system.
-- 
2.29.2


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  parent reply	other threads:[~2021-09-28 15:49 UTC|newest]

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-28 15:41 [PATCH 00/14] ARM: randconfig build fixes Arnd Bergmann
2021-09-28 15:41 ` [PATCH 01/14] ARM: RiscPC needs older gcc version Arnd Bergmann
2021-09-28 16:03   ` Arnd Bergmann
2021-09-29  8:45     ` Arnd Bergmann
2021-09-28 15:41 ` [PATCH 02/14] ARM: patch: fix BE32 compilation Arnd Bergmann
2021-09-28 21:33   ` Linus Walleij
2021-09-28 15:41 ` [PATCH 03/14] ARM: remove duplicate memcpy() definition Arnd Bergmann
2021-09-28 21:39   ` Linus Walleij
2021-09-28 15:41 ` [PATCH 04/14] ARM: kprobes: address gcc -Wempty-body warning Arnd Bergmann
2021-09-28 15:41 ` [PATCH 05/14] ARM: ARMv7-M uses BE-8, not BE-32 Arnd Bergmann
2021-09-28 15:41 ` [PATCH 06/14] ARM: disallow CONFIG_THUMB with ARMv4 Arnd Bergmann
2021-09-29 18:52   ` Nick Desaulniers
2021-10-06 16:01   ` Ard Biesheuvel
2021-09-28 15:41 ` [PATCH 07/14] ARM: fix link warning with XIP + frame-pointer Arnd Bergmann
2021-09-28 15:41 ` [PATCH 08/14] ARM: kprobes: fix arch_init_kprobes() prototype Arnd Bergmann
2021-09-28 15:41 ` [PATCH 09/14] ARM: allow compile-testing without machine record Arnd Bergmann
2021-09-28 15:41 ` [PATCH 10/14] ARM: only warn about XIP address when not compile testing Arnd Bergmann
2021-09-28 15:41 ` [PATCH 11/14] ARM: kasan: work around LPAE build warning Arnd Bergmann
2021-09-28 15:41 ` Arnd Bergmann [this message]
2021-09-28 16:02   ` [PATCH 12/14] ARM: add CONFIG_PHYS_OFFSET default values Nicolas Pitre
2021-09-28 21:44   ` Linus Walleij
2021-09-28 15:41 ` [PATCH 13/14] ARM: use .arch directives instead of assembler command line flags Arnd Bergmann
2021-09-28 17:10   ` Nick Desaulniers
2021-09-28 18:32     ` Arnd Bergmann
2021-09-29 18:11       ` Nick Desaulniers
2022-01-21 22:17   ` Nathan Chancellor
2021-09-28 15:41 ` [PATCH 14/14] [RFC] ARM: forbid ftrace with clang and thumb2_kernel Arnd Bergmann
2021-09-28 17:20   ` Nick Desaulniers

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