MIPS: ath25: add common parts

Add common code for Atheros AR5312 and Atheros AR2315 SoCs families.

Signed-off-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Cc: Linux MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/8237
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/Kbuild.platforms b/arch/mips/Kbuild.platforms
index 7c507212025a9d84954bae94be15ab67642a182e..e5fc463b36d0822e1d4277bc5a22b2db28328e32 100644 (file)
--- a/arch/mips/Kbuild.platforms
+++ b/arch/mips/Kbuild.platforms
@@ -2,6 +2,7 @@
 
 platforms += alchemy
 platforms += ar7
+platforms += ath25
 platforms += ath79
 platforms += bcm3384
 platforms += bcm47xx

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 9e8317e9b567c245bac97d619e10bb03441ec95f..7db1bfb80f0af3aa32fa1784977f889f61204280 100644 (file)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -97,6 +97,18 @@ config AR7
          Support for the Texas Instruments AR7 System-on-a-Chip
          family: TNETD7100, 7200 and 7300.
 
+config ATH25
+       bool "Atheros AR231x/AR531x SoC support"
+       select CEVT_R4K
+       select CSRC_R4K
+       select DMA_NONCOHERENT
+       select IRQ_CPU
+       select SYS_HAS_CPU_MIPS32_R1
+       select SYS_SUPPORTS_BIG_ENDIAN
+       select SYS_SUPPORTS_32BIT_KERNEL
+       help
+         Support for Atheros AR231x and Atheros AR531x based boards
+
 config ATH79
        bool "Atheros AR71XX/AR724X/AR913X based boards"
        select ARCH_REQUIRE_GPIOLIB

diff --git a/arch/mips/ath25/Makefile b/arch/mips/ath25/Makefile
new file mode 100644 (file)
index 0000000..9199fa1
--- /dev/null
+++ b/arch/mips/ath25/Makefile
@@ -0,0 +1,11 @@
+#
+# This file is subject to the terms and conditions of the GNU General Public
+# License.  See the file "COPYING" in the main directory of this archive
+# for more details.
+#
+# Copyright (C) 2006 FON Technology, SL.
+# Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+# Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+#
+
+obj-y += board.o prom.o devices.o

diff --git a/arch/mips/ath25/Platform b/arch/mips/ath25/Platform
new file mode 100644 (file)
index 0000000..ef3f81f
--- /dev/null
+++ b/arch/mips/ath25/Platform
@@ -0,0 +1,6 @@
+#
+# Atheros AR531X/AR231X WiSoC
+#
+platform-$(CONFIG_ATH25)       += ath25/
+cflags-$(CONFIG_ATH25)         += -I$(srctree)/arch/mips/include/asm/mach-ath25
+load-$(CONFIG_ATH25)           += 0xffffffff80041000

diff --git a/arch/mips/ath25/board.c b/arch/mips/ath25/board.c
new file mode 100644 (file)
index 0000000..dd70327
--- /dev/null
+++ b/arch/mips/ath25/board.c
@@ -0,0 +1,51 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006-2009 Felix Fietkau <nbd@openwrt.org>
+ */
+
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <asm/irq_cpu.h>
+#include <asm/reboot.h>
+#include <asm/bootinfo.h>
+#include <asm/time.h>
+
+static void ath25_halt(void)
+{
+       local_irq_disable();
+       unreachable();
+}
+
+void __init plat_mem_setup(void)
+{
+       _machine_halt = ath25_halt;
+       pm_power_off = ath25_halt;
+
+       /* Disable data watchpoints */
+       write_c0_watchlo0(0);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+}
+
+void __init plat_time_init(void)
+{
+}
+
+unsigned int __cpuinit get_c0_compare_int(void)
+{
+       return CP0_LEGACY_COMPARE_IRQ;
+}
+
+void __init arch_init_irq(void)
+{
+       clear_c0_status(ST0_IM);
+       mips_cpu_irq_init();
+}

diff --git a/arch/mips/ath25/devices.c b/arch/mips/ath25/devices.c
new file mode 100644 (file)
index 0000000..049ab44
--- /dev/null
+++ b/arch/mips/ath25/devices.c
@@ -0,0 +1,10 @@
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+
+#include "devices.h"
+
+const char *get_system_type(void)
+{
+       return "Atheros (unknown)";
+}

diff --git a/arch/mips/ath25/devices.h b/arch/mips/ath25/devices.h
new file mode 100644 (file)
index 0000000..e25a326
--- /dev/null
+++ b/arch/mips/ath25/devices.h
@@ -0,0 +1,18 @@
+#ifndef __ATH25_DEVICES_H
+#define __ATH25_DEVICES_H
+
+#include <linux/cpu.h>
+
+#define ATH25_REG_MS(_val, _field)     (((_val) & _field##_M) >> _field##_S)
+
+static inline bool is_ar2315(void)
+{
+       return (current_cpu_data.cputype == CPU_4KEC);
+}
+
+static inline bool is_ar5312(void)
+{
+       return !is_ar2315();
+}
+
+#endif

diff --git a/arch/mips/ath25/prom.c b/arch/mips/ath25/prom.c
new file mode 100644 (file)
index 0000000..edf82be
--- /dev/null
+++ b/arch/mips/ath25/prom.c
@@ -0,0 +1,26 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright MontaVista Software Inc
+ * Copyright (C) 2003 Atheros Communications, Inc.,  All Rights Reserved.
+ * Copyright (C) 2006 FON Technology, SL.
+ * Copyright (C) 2006 Imre Kaloz <kaloz@openwrt.org>
+ * Copyright (C) 2006 Felix Fietkau <nbd@openwrt.org>
+ */
+
+/*
+ * Prom setup file for AR5312/AR231x SoCs
+ */
+
+#include <linux/init.h>
+#include <asm/bootinfo.h>
+
+void __init prom_init(void)
+{
+}
+
+void __init prom_free_prom_memory(void)
+{
+}

diff --git a/arch/mips/include/asm/mach-ath25/cpu-feature-overrides.h b/arch/mips/include/asm/mach-ath25/cpu-feature-overrides.h
new file mode 100644 (file)
index 0000000..5fd82d8
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/cpu-feature-overrides.h
@@ -0,0 +1,56 @@
+/*
+ *  Atheros AR231x/AR531x SoC specific CPU feature overrides
+ *
+ *  Copyright (C) 2008 Gabor Juhos <juhosg@openwrt.org>
+ *
+ *  This file was derived from: include/asm-mips/cpu-features.h
+ *     Copyright (C) 2003, 2004 Ralf Baechle
+ *     Copyright (C) 2004 Maciej W. Rozycki
+ *
+ *  This program is free software; you can redistribute it and/or modify it
+ *  under the terms of the GNU General Public License version 2 as published
+ *  by the Free Software Foundation.
+ *
+ */
+#ifndef __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H
+#define __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H
+
+/*
+ * The Atheros AR531x/AR231x SoCs have MIPS 4Kc/4KEc core.
+ */
+#define cpu_has_tlb                    1
+#define cpu_has_4kex                   1
+#define cpu_has_3k_cache               0
+#define cpu_has_4k_cache               1
+#define cpu_has_tx39_cache             0
+#define cpu_has_sb1_cache              0
+#define cpu_has_fpu                    0
+#define cpu_has_32fpr                  0
+#define cpu_has_counter                        1
+#define cpu_has_ejtag                  1
+
+/*
+ * The MIPS 4Kc V0.9 core in the AR5312/AR2312 have problems with the
+ * ll/sc instructions.
+ */
+#define cpu_has_llsc                   0
+
+#define cpu_has_mips16                 0
+#define cpu_has_mdmx                   0
+#define cpu_has_mips3d                 0
+#define cpu_has_smartmips              0
+
+#define cpu_has_mips32r1               1
+
+#define cpu_has_mips64r1               0
+#define cpu_has_mips64r2               0
+
+#define cpu_has_dsp                    0
+#define cpu_has_mipsmt                 0
+
+#define cpu_has_64bits                 0
+#define cpu_has_64bit_zero_reg         0
+#define cpu_has_64bit_gp_regs          0
+#define cpu_has_64bit_addresses                0
+
+#endif /* __ASM_MACH_ATH25_CPU_FEATURE_OVERRIDES_H */

diff --git a/arch/mips/include/asm/mach-ath25/dma-coherence.h b/arch/mips/include/asm/mach-ath25/dma-coherence.h
new file mode 100644 (file)
index 0000000..8b3d0cc
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/dma-coherence.h
@@ -0,0 +1,64 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2006  Ralf Baechle <ralf@linux-mips.org>
+ * Copyright (C) 2007  Felix Fietkau <nbd@openwrt.org>
+ *
+ */
+#ifndef __ASM_MACH_ATH25_DMA_COHERENCE_H
+#define __ASM_MACH_ATH25_DMA_COHERENCE_H
+
+#include <linux/device.h>
+
+static inline dma_addr_t
+plat_map_dma_mem(struct device *dev, void *addr, size_t size)
+{
+       return virt_to_phys(addr);
+}
+
+static inline dma_addr_t
+plat_map_dma_mem_page(struct device *dev, struct page *page)
+{
+       return page_to_phys(page);
+}
+
+static inline unsigned long
+plat_dma_addr_to_phys(struct device *dev, dma_addr_t dma_addr)
+{
+       return dma_addr;
+}
+
+static inline void
+plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, size_t size,
+                  enum dma_data_direction direction)
+{
+}
+
+static inline int plat_dma_supported(struct device *dev, u64 mask)
+{
+       return 1;
+}
+
+static inline void plat_extra_sync_for_device(struct device *dev)
+{
+}
+
+static inline int plat_dma_mapping_error(struct device *dev,
+                                        dma_addr_t dma_addr)
+{
+       return 0;
+}
+
+static inline int plat_device_is_coherent(struct device *dev)
+{
+#ifdef CONFIG_DMA_COHERENT
+       return 1;
+#endif
+#ifdef CONFIG_DMA_NONCOHERENT
+       return 0;
+#endif
+}
+
+#endif /* __ASM_MACH_ATH25_DMA_COHERENCE_H */

diff --git a/arch/mips/include/asm/mach-ath25/gpio.h b/arch/mips/include/asm/mach-ath25/gpio.h
new file mode 100644 (file)
index 0000000..713564b
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/gpio.h
@@ -0,0 +1,16 @@
+#ifndef __ASM_MACH_ATH25_GPIO_H
+#define __ASM_MACH_ATH25_GPIO_H
+
+#include <asm-generic/gpio.h>
+
+#define gpio_get_value __gpio_get_value
+#define gpio_set_value __gpio_set_value
+#define gpio_cansleep __gpio_cansleep
+#define gpio_to_irq __gpio_to_irq
+
+static inline int irq_to_gpio(unsigned irq)
+{
+       return -EINVAL;
+}
+
+#endif /* __ASM_MACH_ATH25_GPIO_H */

diff --git a/arch/mips/include/asm/mach-ath25/war.h b/arch/mips/include/asm/mach-ath25/war.h
new file mode 100644 (file)
index 0000000..e3a5250
--- /dev/null
+++ b/arch/mips/include/asm/mach-ath25/war.h
@@ -0,0 +1,25 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2008 Felix Fietkau <nbd@openwrt.org>
+ */
+#ifndef __ASM_MACH_ATH25_WAR_H
+#define __ASM_MACH_ATH25_WAR_H
+
+#define R4600_V1_INDEX_ICACHEOP_WAR    0
+#define R4600_V1_HIT_CACHEOP_WAR       0
+#define R4600_V2_HIT_CACHEOP_WAR       0
+#define R5432_CP0_INTERRUPT_WAR                0
+#define BCM1250_M3_WAR                 0
+#define SIBYTE_1956_WAR                        0
+#define MIPS4K_ICACHE_REFILL_WAR       0
+#define MIPS_CACHE_SYNC_WAR            0
+#define TX49XX_ICACHE_INDEX_INV_WAR    0
+#define RM9000_CDEX_SMP_WAR            0
+#define ICACHE_REFILLS_WORKAROUND_WAR  0
+#define R10000_LLSC_WAR                        0
+#define MIPS34K_MISSED_ITLB_WAR                0
+
+#endif /* __ASM_MACH_ATH25_WAR_H */