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Message-Id: <20230331-topic-oxnas-upstream-remove-v2-2-e51078376f08@linaro.org>
Date: Mon, 03 Apr 2023 09:42:19 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
soc@...nel.org, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Russell King <linux@...linux.org.uk>
Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-oxnas@...ups.io,
Neil Armstrong <neil.armstrong@...aro.org>,
Linus Walleij <linus.walleij@...aro.org>,
Daniel Golle <daniel@...rotopia.org>
Subject: [PATCH RFC v2 2/4] ARM: oxnas: remove OXNAS support
Due to lack of maintainance and stall of development for a few years now,
and since no new features will ever be added upstream, remove support
for OX810 and OX820 ARM support.
Acked-by: Linus Walleij <linus.walleij@...aro.org>
Acked-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Daniel Golle <daniel@...rotopia.org>
Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
---
arch/arm/Kconfig | 2 -
arch/arm/Makefile | 1 -
arch/arm/mach-oxnas/Kconfig | 38 -----------------
arch/arm/mach-oxnas/Makefile | 2 -
arch/arm/mach-oxnas/headsmp.S | 23 -----------
arch/arm/mach-oxnas/platsmp.c | 96 -------------------------------------------
6 files changed, 162 deletions(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e24a9820e12f..017329401b3d 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -497,8 +497,6 @@ source "arch/arm/mach-omap2/Kconfig"
source "arch/arm/mach-orion5x/Kconfig"
-source "arch/arm/mach-oxnas/Kconfig"
-
source "arch/arm/mach-pxa/Kconfig"
source "arch/arm/mach-qcom/Kconfig"
diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 485a439e22ca..547e5856eaa0 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -203,7 +203,6 @@ machine-$(CONFIG_ARCH_MSTARV7) += mstar
machine-$(CONFIG_ARCH_NOMADIK) += nomadik
machine-$(CONFIG_ARCH_NPCM) += npcm
machine-$(CONFIG_ARCH_NSPIRE) += nspire
-machine-$(CONFIG_ARCH_OXNAS) += oxnas
machine-$(CONFIG_ARCH_OMAP1) += omap1
machine-$(CONFIG_ARCH_OMAP2PLUS) += omap2
machine-$(CONFIG_ARCH_ORION5X) += orion5x
diff --git a/arch/arm/mach-oxnas/Kconfig b/arch/arm/mach-oxnas/Kconfig
deleted file mode 100644
index a9ded7079268..000000000000
--- a/arch/arm/mach-oxnas/Kconfig
+++ /dev/null
@@ -1,38 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-menuconfig ARCH_OXNAS
- bool "Oxford Semiconductor OXNAS Family SoCs"
- depends on (ARCH_MULTI_V5 && CPU_LITTLE_ENDIAN) || ARCH_MULTI_V6
- select ARCH_HAS_RESET_CONTROLLER
- select COMMON_CLK_OXNAS
- select GPIOLIB
- select MFD_SYSCON
- select OXNAS_RPS_TIMER
- select PINCTRL_OXNAS
- select RESET_CONTROLLER
- select RESET_OXNAS
- select VERSATILE_FPGA_IRQ
- select PINCTRL
- help
- Support for OxNas SoC family developed by Oxford Semiconductor.
-
-if ARCH_OXNAS
-
-config MACH_OX810SE
- bool "Support OX810SE Based Products"
- depends on ARCH_MULTI_V5
- select CPU_ARM926T
- help
- Include Support for the Oxford Semiconductor OX810SE SoC Based Products.
-
-config MACH_OX820
- bool "Support OX820 Based Products"
- depends on ARCH_MULTI_V6
- select ARM_GIC
- select DMA_CACHE_RWFO if SMP
- select HAVE_SMP
- select HAVE_ARM_SCU if SMP
- select HAVE_ARM_TWD if SMP
- help
- Include Support for the Oxford Semiconductor OX820 SoC Based Products.
-
-endif
diff --git a/arch/arm/mach-oxnas/Makefile b/arch/arm/mach-oxnas/Makefile
deleted file mode 100644
index 0e78ecfe6c49..000000000000
--- a/arch/arm/mach-oxnas/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-$(CONFIG_SMP) += platsmp.o headsmp.o
diff --git a/arch/arm/mach-oxnas/headsmp.S b/arch/arm/mach-oxnas/headsmp.S
deleted file mode 100644
index 9c0f1479f33a..000000000000
--- a/arch/arm/mach-oxnas/headsmp.S
+++ /dev/null
@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2013 Ma Haijun <mahaijuns@...il.com>
- * Copyright (c) 2003 ARM Limited
- * All Rights Reserved
- */
-#include <linux/linkage.h>
-#include <linux/init.h>
-
- __INIT
-
-/*
- * OX820 specific entry point for secondary CPUs.
- */
-ENTRY(ox820_secondary_startup)
- mov r4, #0
- /* invalidate both caches and branch target cache */
- mcr p15, 0, r4, c7, c7, 0
- /*
- * we've been released from the holding pen: secondary_stack
- * should now contain the SVC stack for this core
- */
- b secondary_startup
diff --git a/arch/arm/mach-oxnas/platsmp.c b/arch/arm/mach-oxnas/platsmp.c
deleted file mode 100644
index f0a50b9e61df..000000000000
--- a/arch/arm/mach-oxnas/platsmp.c
+++ /dev/null
@@ -1,96 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2016 Neil Armstrong <narmstrong@...libre.com>
- * Copyright (C) 2013 Ma Haijun <mahaijuns@...il.com>
- * Copyright (C) 2002 ARM Ltd.
- * All Rights Reserved
- */
-#include <linux/io.h>
-#include <linux/delay.h>
-#include <linux/of.h>
-#include <linux/of_address.h>
-
-#include <asm/cacheflush.h>
-#include <asm/cp15.h>
-#include <asm/smp_plat.h>
-#include <asm/smp_scu.h>
-
-extern void ox820_secondary_startup(void);
-
-static void __iomem *cpu_ctrl;
-static void __iomem *gic_cpu_ctrl;
-
-#define HOLDINGPEN_CPU_OFFSET 0xc8
-#define HOLDINGPEN_LOCATION_OFFSET 0xc4
-
-#define GIC_NCPU_OFFSET(cpu) (0x100 + (cpu)*0x100)
-#define GIC_CPU_CTRL 0x00
-#define GIC_CPU_CTRL_ENABLE 1
-
-static int __init ox820_boot_secondary(unsigned int cpu,
- struct task_struct *idle)
-{
- /*
- * Write the address of secondary startup into the
- * system-wide flags register. The BootMonitor waits
- * until it receives a soft interrupt, and then the
- * secondary CPU branches to this address.
- */
- writel(virt_to_phys(ox820_secondary_startup),
- cpu_ctrl + HOLDINGPEN_LOCATION_OFFSET);
-
- writel(cpu, cpu_ctrl + HOLDINGPEN_CPU_OFFSET);
-
- /*
- * Enable GIC cpu interface in CPU Interface Control Register
- */
- writel(GIC_CPU_CTRL_ENABLE,
- gic_cpu_ctrl + GIC_NCPU_OFFSET(cpu) + GIC_CPU_CTRL);
-
- /*
- * Send the secondary CPU a soft interrupt, thereby causing
- * the boot monitor to read the system wide flags register,
- * and branch to the address found there.
- */
- arch_send_wakeup_ipi_mask(cpumask_of(cpu));
-
- return 0;
-}
-
-static void __init ox820_smp_prepare_cpus(unsigned int max_cpus)
-{
- struct device_node *np;
- void __iomem *scu_base;
-
- np = of_find_compatible_node(NULL, NULL, "arm,arm11mp-scu");
- scu_base = of_iomap(np, 0);
- of_node_put(np);
- if (!scu_base)
- return;
-
- /* Remap CPU Interrupt Interface Registers */
- np = of_find_compatible_node(NULL, NULL, "arm,arm11mp-gic");
- gic_cpu_ctrl = of_iomap(np, 1);
- of_node_put(np);
- if (!gic_cpu_ctrl)
- goto unmap_scu;
-
- np = of_find_compatible_node(NULL, NULL, "oxsemi,ox820-sys-ctrl");
- cpu_ctrl = of_iomap(np, 0);
- of_node_put(np);
- if (!cpu_ctrl)
- goto unmap_scu;
-
- scu_enable(scu_base);
- flush_cache_all();
-
-unmap_scu:
- iounmap(scu_base);
-}
-
-static const struct smp_operations ox820_smp_ops __initconst = {
- .smp_prepare_cpus = ox820_smp_prepare_cpus,
- .smp_boot_secondary = ox820_boot_secondary,
-};
-
-CPU_METHOD_OF_DECLARE(ox820_smp, "oxsemi,ox820-smp", &ox820_smp_ops);
--
2.34.1
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