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Message-Id: <20220405091750.3076973-13-arnd@kernel.org>
Date: Tue, 5 Apr 2022 11:17:50 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: unlisted-recipients:; (no To-header on input)
Cc: Arnd Bergmann <arnd@...db.de>,
Russell King <linux@...linux.org.uk>,
Hartley Sweeten <hsweeten@...ionengravers.com>,
Alexander Sverdlin <alexander.sverdlin@...il.com>,
Hubert Feurstein <hubert.feurstein@...tec.at>,
Lukasz Majewski <lukma@...x.de>,
Krzysztof Kozlowski <krzk@...nel.org>,
Alim Akhtar <alim.akhtar@...sung.com>,
Linus Walleij <linus.walleij@...aro.org>,
Imre Kaloz <kaloz@...nwrt.org>,
Krzysztof Halasa <khalasa@...p.pl>,
Andrew Lunn <andrew@...n.ch>,
Gregory Clement <gregory.clement@...tlin.com>,
Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
Simtec Linux Team <linux@...tec.co.uk>,
Liviu Dudau <liviu.dudau@....com>,
Sudeep Holla <sudeep.holla@....com>,
Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
Ard Biesheuvel <ardb@...nel.org>,
Stephen Boyd <sboyd@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, patches@...nsource.cirrus.com
Subject: [PATCH 12/12] ARM: ixp4xx: enable multiplatform support
From: Arnd Bergmann <arnd@...db.de>
After all the work that Linus Walleij did on this platform, it can be
part of a generic kernel build as well.
Note that there are known bugs in little-endian mode on ixp4xx, and
no other ARMv5 platform at this point supports big-endian mode, or is
likely to in the future, so there is limited practical value in this,
but it helps with build testing and ixp4xx little-endian support may
get fixed in the future.
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
arch/arm/Kconfig | 16 ------
arch/arm/mach-ixp4xx/Kconfig | 22 +++++---
arch/arm/mach-ixp4xx/Makefile.boot | 4 --
.../arm/mach-ixp4xx/include/mach/uncompress.h | 54 -------------------
4 files changed, 15 insertions(+), 81 deletions(-)
delete mode 100644 arch/arm/mach-ixp4xx/Makefile.boot
delete mode 100644 arch/arm/mach-ixp4xx/include/mach/uncompress.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4d98de155e20..db9b9ed5d7c7 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -357,22 +357,6 @@ config ARCH_FOOTBRIDGE
Support for systems based on the DC21285 companion chip
("FootBridge"), such as the Simtec CATS and the Rebel NetWinder.
-config ARCH_IXP4XX
- bool "IXP4xx-based"
- depends on CPU_BIG_ENDIAN
- select ARM_PATCH_PHYS_VIRT
- select CPU_XSCALE
- select GPIO_IXP4XX
- select GPIOLIB
- select HAVE_PCI
- select IXP4XX_IRQ
- select IXP4XX_TIMER
- select SPARSE_IRQ
- select USB_EHCI_BIG_ENDIAN_DESC
- select USB_EHCI_BIG_ENDIAN_MMIO
- help
- Support for Intel's IXP4XX (XScale) family of processors.
-
config ARCH_PXA
bool "PXA2xx/PXA3xx-based"
depends on CPU_LITTLE_ENDIAN
diff --git a/arch/arm/mach-ixp4xx/Kconfig b/arch/arm/mach-ixp4xx/Kconfig
index f41ba3f42fc8..dc6ea3c2e3ed 100644
--- a/arch/arm/mach-ixp4xx/Kconfig
+++ b/arch/arm/mach-ixp4xx/Kconfig
@@ -1,9 +1,20 @@
# SPDX-License-Identifier: GPL-2.0-only
-if ARCH_IXP4XX
-
-menu "Intel IXP4xx Implementation Options"
+menuconfig ARCH_IXP4XX
+ bool "IXP4xx-based platforms"
+ depends on ARCH_MULTI_V5
+ depends on CPU_BIG_ENDIAN
+ select CPU_XSCALE
+ select GPIO_IXP4XX
+ select GPIOLIB
+ select FORCE_PCI
+ select IXP4XX_IRQ
+ select IXP4XX_TIMER
+ select USB_EHCI_BIG_ENDIAN_DESC
+ select USB_EHCI_BIG_ENDIAN_MMIO
+ help
+ Support for Intel's IXP4XX (XScale) family of processors.
-comment "IXP4xx Platforms"
+if ARCH_IXP4XX
config MACH_IXP4XX_OF
bool
@@ -12,11 +23,8 @@ config MACH_IXP4XX_OF
select ARM_APPENDED_DTB # Old Redboot bootloaders deployed
select I2C
select I2C_IOP3XX
- select PCI
select USE_OF
help
Say 'Y' here to support Device Tree-based IXP4xx platforms.
-endmenu
-
endif
diff --git a/arch/arm/mach-ixp4xx/Makefile.boot b/arch/arm/mach-ixp4xx/Makefile.boot
deleted file mode 100644
index 9b015bd1ef27..000000000000
--- a/arch/arm/mach-ixp4xx/Makefile.boot
+++ /dev/null
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
- zreladdr-y += 0x00008000
-params_phys-y := 0x00000100
-
diff --git a/arch/arm/mach-ixp4xx/include/mach/uncompress.h b/arch/arm/mach-ixp4xx/include/mach/uncompress.h
deleted file mode 100644
index 09e7663e6a55..000000000000
--- a/arch/arm/mach-ixp4xx/include/mach/uncompress.h
+++ /dev/null
@@ -1,54 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * arch/arm/mach-ixp4xx/include/mach/uncompress.h
- *
- * Copyright (C) 2002 Intel Corporation.
- * Copyright (C) 2003-2004 MontaVista Software, Inc.
- */
-
-#ifndef _ARCH_UNCOMPRESS_H_
-#define _ARCH_UNCOMPRESS_H_
-
-#include <asm/mach-types.h>
-#include <linux/serial_reg.h>
-
-#define IXP4XX_UART1_BASE_PHYS 0xc8000000
-#define IXP4XX_UART2_BASE_PHYS 0xc8001000
-
-#define TX_DONE (UART_LSR_TEMT|UART_LSR_THRE)
-
-volatile u32* uart_base;
-
-static inline void putc(int c)
-{
- /* Check THRE and TEMT bits before we transmit the character.
- */
- while ((uart_base[UART_LSR] & TX_DONE) != TX_DONE)
- barrier();
-
- *uart_base = c;
-}
-
-static void flush(void)
-{
-}
-
-static __inline__ void __arch_decomp_setup(unsigned long arch_id)
-{
- /*
- * Some boards are using UART2 as console
- */
- if (machine_is_adi_coyote() || machine_is_gtwx5715() ||
- machine_is_gateway7001() || machine_is_wg302v2() ||
- machine_is_devixp() || machine_is_miccpt() || machine_is_mic256())
- uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
- else
- uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;
-}
-
-/*
- * arch_id is a variable in decompress_kernel()
- */
-#define arch_decomp_setup() __arch_decomp_setup(arch_id)
-
-#endif
--
2.29.2
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