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Diffstat (limited to 'target/linux/lantiq/patches-2.6.32/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch')
-rw-r--r--target/linux/lantiq/patches-2.6.32/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch898
1 files changed, 0 insertions, 898 deletions
diff --git a/target/linux/lantiq/patches-2.6.32/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch b/target/linux/lantiq/patches-2.6.32/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch
deleted file mode 100644
index 6131577e8d..0000000000
--- a/target/linux/lantiq/patches-2.6.32/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch
+++ /dev/null
@@ -1,898 +0,0 @@
-From 9e0235e97ea2617beaacaa16ab5f0b9e75f4680e Mon Sep 17 00:00:00 2001
-From: John Crispin <blogic@openwrt.org>
-Date: Wed, 30 Mar 2011 09:27:47 +0200
-Subject: [PATCH 01/13] MIPS: Lantiq: Add initial support for Lantiq SoCs
-
-Add initial support for Mips based SoCs made by Lantiq. This series will add
-support for the XWAY family.
-
-The series allows booting a minimal system using a initramfs or NOR. Missing
-drivers and support for Amazon and GPON family will be provided in a later
-series.
-
-[Ralf: Remove some cargo cult programming and fixed formatting.]
-
-Signed-off-by: John Crispin <blogic@openwrt.org>
-Signed-off-by: Ralph Hempel <ralph.hempel@lantiq.com>
-Signed-off-by: David Daney <ddaney@caviumnetworks.com>
-Cc: linux-mips@linux-mips.org
-Patchwork: https://patchwork.linux-mips.org/patch/2252/
-Patchwork: https://patchwork.linux-mips.org/patch/2371/
-Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
----
- arch/mips/Kbuild.platforms | 1 +
- arch/mips/Kconfig | 17 ++
- arch/mips/include/asm/mach-lantiq/lantiq.h | 63 ++++++
- arch/mips/include/asm/mach-lantiq/war.h | 24 ++
- arch/mips/lantiq/Makefile | 9 +
- arch/mips/lantiq/Platform | 7 +
- arch/mips/lantiq/clk.c | 140 ++++++++++++
- arch/mips/lantiq/clk.h | 18 ++
- arch/mips/lantiq/early_printk.c | 33 +++
- arch/mips/lantiq/irq.c | 326 ++++++++++++++++++++++++++++
- arch/mips/lantiq/prom.c | 71 ++++++
- arch/mips/lantiq/prom.h | 24 ++
- arch/mips/lantiq/setup.c | 41 ++++
- 13 files changed, 774 insertions(+), 0 deletions(-)
- create mode 100644 arch/mips/include/asm/mach-lantiq/lantiq.h
- create mode 100644 arch/mips/include/asm/mach-lantiq/war.h
- create mode 100644 arch/mips/lantiq/Makefile
- create mode 100644 arch/mips/lantiq/Platform
- create mode 100644 arch/mips/lantiq/clk.c
- create mode 100644 arch/mips/lantiq/clk.h
- create mode 100644 arch/mips/lantiq/early_printk.c
- create mode 100644 arch/mips/lantiq/irq.c
- create mode 100644 arch/mips/lantiq/prom.c
- create mode 100644 arch/mips/lantiq/prom.h
- create mode 100644 arch/mips/lantiq/setup.c
-
---- a/arch/mips/Kconfig
-+++ b/arch/mips/Kconfig
-@@ -174,6 +174,23 @@
- Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
- Olivetti M700-10 workstations.
-
-+config LANTIQ
-+ bool "Lantiq based platforms"
-+ select DMA_NONCOHERENT
-+ select IRQ_CPU
-+ select CEVT_R4K
-+ select CSRC_R4K
-+ select SYS_HAS_CPU_MIPS32_R1
-+ select SYS_HAS_CPU_MIPS32_R2
-+ select SYS_SUPPORTS_BIG_ENDIAN
-+ select SYS_SUPPORTS_32BIT_KERNEL
-+ select SYS_SUPPORTS_MULTITHREADING
-+ select SYS_HAS_EARLY_PRINTK
-+ select ARCH_REQUIRE_GPIOLIB
-+ select SWAP_IO_SPACE
-+ select BOOT_RAW
-+ select HAVE_CLK
-+
- config LASAT
- bool "LASAT Networks platforms"
- select CEVT_R4K
---- /dev/null
-+++ b/arch/mips/include/asm/mach-lantiq/lantiq.h
-@@ -0,0 +1,63 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+#ifndef _LANTIQ_H__
-+#define _LANTIQ_H__
-+
-+#include <linux/irq.h>
-+
-+/* generic reg access functions */
-+#define ltq_r32(reg) __raw_readl(reg)
-+#define ltq_w32(val, reg) __raw_writel(val, reg)
-+#define ltq_w32_mask(clear, set, reg) \
-+ ltq_w32((ltq_r32(reg) & ~(clear)) | (set), reg)
-+#define ltq_r8(reg) __raw_readb(reg)
-+#define ltq_w8(val, reg) __raw_writeb(val, reg)
-+
-+/* register access macros for EBU and CGU */
-+#define ltq_ebu_w32(x, y) ltq_w32((x), ltq_ebu_membase + (y))
-+#define ltq_ebu_r32(x) ltq_r32(ltq_ebu_membase + (x))
-+#define ltq_cgu_w32(x, y) ltq_w32((x), ltq_cgu_membase + (y))
-+#define ltq_cgu_r32(x) ltq_r32(ltq_cgu_membase + (x))
-+
-+extern __iomem void *ltq_ebu_membase;
-+extern __iomem void *ltq_cgu_membase;
-+
-+extern unsigned int ltq_get_cpu_ver(void);
-+extern unsigned int ltq_get_soc_type(void);
-+
-+/* clock speeds */
-+#define CLOCK_60M 60000000
-+#define CLOCK_83M 83333333
-+#define CLOCK_111M 111111111
-+#define CLOCK_133M 133333333
-+#define CLOCK_167M 166666667
-+#define CLOCK_200M 200000000
-+#define CLOCK_266M 266666666
-+#define CLOCK_333M 333333333
-+#define CLOCK_400M 400000000
-+
-+/* spinlock all ebu i/o */
-+extern spinlock_t ebu_lock;
-+
-+/* some irq helpers */
-+extern void ltq_disable_irq(unsigned int irq);
-+extern void ltq_mask_and_ack_irq(unsigned int irq);
-+extern void ltq_enable_irq(unsigned int irq);
-+
-+/* find out what caused the last cpu reset */
-+extern int ltq_reset_cause(void);
-+#define LTQ_RST_CAUSE_WDTRST 0x20
-+
-+#define IOPORT_RESOURCE_START 0x10000000
-+#define IOPORT_RESOURCE_END 0xffffffff
-+#define IOMEM_RESOURCE_START 0x10000000
-+#define IOMEM_RESOURCE_END 0xffffffff
-+#define LTQ_FLASH_START 0x10000000
-+#define LTQ_FLASH_MAX 0x04000000
-+
-+#endif
---- /dev/null
-+++ b/arch/mips/include/asm/mach-lantiq/war.h
-@@ -0,0 +1,24 @@
-+/*
-+ * 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.
-+ *
-+ */
-+#ifndef __ASM_MIPS_MACH_LANTIQ_WAR_H
-+#define __ASM_MIPS_MACH_LANTIQ_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
---- /dev/null
-+++ b/arch/mips/lantiq/Makefile
-@@ -0,0 +1,9 @@
-+# Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+#
-+# 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.
-+
-+obj-y := irq.o setup.o clk.o prom.o
-+
-+obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
---- /dev/null
-+++ b/arch/mips/lantiq/Platform
-@@ -0,0 +1,7 @@
-+#
-+# Lantiq
-+#
-+
-+platform-$(CONFIG_LANTIQ) += lantiq/
-+cflags-$(CONFIG_LANTIQ) += -I$(srctree)/arch/mips/include/asm/mach-lantiq
-+load-$(CONFIG_LANTIQ) = 0xffffffff80002000
---- /dev/null
-+++ b/arch/mips/lantiq/clk.c
-@@ -0,0 +1,144 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 Thomas Langer <thomas.langer@lantiq.com>
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+#include <linux/io.h>
-+#include <linux/module.h>
-+#include <linux/init.h>
-+#include <linux/kernel.h>
-+#include <linux/types.h>
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/list.h>
-+
-+#include <asm/time.h>
-+#include <asm/irq.h>
-+#include <asm/div64.h>
-+
-+#include <lantiq_soc.h>
-+
-+#include "clk.h"
-+
-+struct clk {
-+ const char *name;
-+ unsigned long rate;
-+ unsigned long (*get_rate) (void);
-+};
-+
-+static struct clk *cpu_clk;
-+static int cpu_clk_cnt;
-+
-+/* lantiq socs have 3 static clocks */
-+static struct clk cpu_clk_generic[] = {
-+ {
-+ .name = "cpu",
-+ .get_rate = ltq_get_cpu_hz,
-+ }, {
-+ .name = "fpi",
-+ .get_rate = ltq_get_fpi_hz,
-+ }, {
-+ .name = "io",
-+ .get_rate = ltq_get_io_region_clock,
-+ },
-+};
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+static struct resource ltq_cgu_resource = {
-+ .name = "cgu",
-+ .start = LTQ_CGU_BASE_ADDR,
-+ .end = LTQ_CGU_BASE_ADDR + LTQ_CGU_SIZE - 1,
-+ .flags = IORESOURCE_MEM,
-+};
-+
-+/* remapped clock register range */
-+void __iomem *ltq_cgu_membase;
-+#endif
-+
-+void clk_init(void)
-+{
-+ cpu_clk = cpu_clk_generic;
-+ cpu_clk_cnt = ARRAY_SIZE(cpu_clk_generic);
-+}
-+
-+static inline int clk_good(struct clk *clk)
-+{
-+ return clk && !IS_ERR(clk);
-+}
-+
-+unsigned long clk_get_rate(struct clk *clk)
-+{
-+ if (unlikely(!clk_good(clk)))
-+ return 0;
-+
-+ if (clk->rate != 0)
-+ return clk->rate;
-+
-+ if (clk->get_rate != NULL)
-+ return clk->get_rate();
-+
-+ return 0;
-+}
-+EXPORT_SYMBOL(clk_get_rate);
-+
-+struct clk *clk_get(struct device *dev, const char *id)
-+{
-+ int i;
-+
-+ for (i = 0; i < cpu_clk_cnt; i++)
-+ if (!strcmp(id, cpu_clk[i].name))
-+ return &cpu_clk[i];
-+ BUG();
-+ return ERR_PTR(-ENOENT);
-+}
-+EXPORT_SYMBOL(clk_get);
-+
-+void clk_put(struct clk *clk)
-+{
-+ /* not used */
-+}
-+EXPORT_SYMBOL(clk_put);
-+
-+static inline u32 ltq_get_counter_resolution(void)
-+{
-+ u32 res;
-+
-+ __asm__ __volatile__(
-+ ".set push\n"
-+ ".set mips32r2\n"
-+ "rdhwr %0, $3\n"
-+ ".set pop\n"
-+ : "=&r" (res)
-+ : /* no input */
-+ : "memory");
-+
-+ return res;
-+}
-+
-+void __init plat_time_init(void)
-+{
-+ struct clk *clk;
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+ if (insert_resource(&iomem_resource, &ltq_cgu_resource) < 0)
-+ panic("Failed to insert cgu memory\n");
-+
-+ if (request_mem_region(ltq_cgu_resource.start,
-+ resource_size(&ltq_cgu_resource), "cgu") < 0)
-+ panic("Failed to request cgu memory\n");
-+
-+ ltq_cgu_membase = ioremap_nocache(ltq_cgu_resource.start,
-+ resource_size(&ltq_cgu_resource));
-+ if (!ltq_cgu_membase) {
-+ pr_err("Failed to remap cgu memory\n");
-+ unreachable();
-+ }
-+#endif
-+ clk = clk_get(0, "cpu");
-+ mips_hpt_frequency = clk_get_rate(clk) / ltq_get_counter_resolution();
-+ write_c0_compare(read_c0_count());
-+ clk_put(clk);
-+}
---- /dev/null
-+++ b/arch/mips/lantiq/clk.h
-@@ -0,0 +1,18 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+
-+#ifndef _LTQ_CLK_H__
-+#define _LTQ_CLK_H__
-+
-+extern void clk_init(void);
-+
-+extern unsigned long ltq_get_cpu_hz(void);
-+extern unsigned long ltq_get_fpi_hz(void);
-+extern unsigned long ltq_get_io_region_clock(void);
-+
-+#endif
---- /dev/null
-+++ b/arch/mips/lantiq/early_printk.c
-@@ -0,0 +1,37 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+
-+#include <linux/init.h>
-+#include <linux/cpu.h>
-+
-+#include <lantiq.h>
-+#include <lantiq_soc.h>
-+
-+/* no ioremap possible at this early stage, lets use KSEG1 instead */
-+#ifdef CONFIG_SOC_FALCON
-+#define LTQ_ASC_BASE KSEG1ADDR(LTQ_ASC0_BASE_ADDR)
-+#else
-+#define LTQ_ASC_BASE KSEG1ADDR(LTQ_ASC1_BASE_ADDR)
-+#endif
-+#define ASC_BUF 1024
-+#define LTQ_ASC_FSTAT ((u32 *)(LTQ_ASC_BASE + 0x0048))
-+#define LTQ_ASC_TBUF ((u32 *)(LTQ_ASC_BASE + 0x0020))
-+#define TXMASK 0x3F00
-+#define TXOFFSET 8
-+
-+void prom_putchar(char c)
-+{
-+ unsigned long flags;
-+
-+ local_irq_save(flags);
-+ do { } while ((ltq_r32(LTQ_ASC_FSTAT) & TXMASK) >> TXOFFSET);
-+ if (c == '\n')
-+ ltq_w32('\r', LTQ_ASC_TBUF);
-+ ltq_w32(c, LTQ_ASC_TBUF);
-+ local_irq_restore(flags);
-+}
---- /dev/null
-+++ b/arch/mips/lantiq/irq.c
-@@ -0,0 +1,353 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ * Copyright (C) 2010 Thomas Langer <thomas.langer@lantiq.com>
-+ */
-+
-+#include <linux/interrupt.h>
-+#include <linux/ioport.h>
-+#include <linux/module.h>
-+
-+#include <asm/bootinfo.h>
-+#include <asm/irq_cpu.h>
-+
-+#include <lantiq_soc.h>
-+#include <irq.h>
-+
-+/* register definitions */
-+#define LTQ_ICU_IM0_ISR 0x0000
-+#define LTQ_ICU_IM0_IER 0x0008
-+#define LTQ_ICU_IM0_IOSR 0x0010
-+#define LTQ_ICU_IM0_IRSR 0x0018
-+#define LTQ_ICU_IM0_IMR 0x0020
-+#define LTQ_ICU_IM1_ISR 0x0028
-+#define LTQ_ICU_OFFSET (LTQ_ICU_IM1_ISR - LTQ_ICU_IM0_ISR)
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+
-+#define LTQ_EIU_EXIN_C 0x0000
-+#define LTQ_EIU_EXIN_INIC 0x0004
-+#define LTQ_EIU_EXIN_INEN 0x000C
-+
-+/* irq numbers used by the external interrupt unit (EIU) */
-+#define LTQ_EIU_IR0 (INT_NUM_IM4_IRL0 + 30)
-+#define LTQ_EIU_IR1 (INT_NUM_IM3_IRL0 + 31)
-+#define LTQ_EIU_IR2 (INT_NUM_IM1_IRL0 + 26)
-+#define LTQ_EIU_IR3 INT_NUM_IM1_IRL0
-+#define LTQ_EIU_IR4 (INT_NUM_IM1_IRL0 + 1)
-+#define LTQ_EIU_IR5 (INT_NUM_IM1_IRL0 + 2)
-+#define LTQ_EIU_IR6 (INT_NUM_IM2_IRL0 + 30)
-+
-+#define MAX_EIU 6
-+
-+/* irqs generated by device attached to the EBU need to be acked in
-+ * a special manner
-+ */
-+#define LTQ_ICU_EBU_IRQ 22
-+
-+#define ltq_eiu_w32(x, y) ltq_w32((x), ltq_eiu_membase + (y))
-+#define ltq_eiu_r32(x) ltq_r32(ltq_eiu_membase + (x))
-+
-+static unsigned short ltq_eiu_irq[MAX_EIU] = {
-+ LTQ_EIU_IR0,
-+ LTQ_EIU_IR1,
-+ LTQ_EIU_IR2,
-+ LTQ_EIU_IR3,
-+ LTQ_EIU_IR4,
-+ LTQ_EIU_IR5,
-+};
-+
-+static void __iomem *ltq_eiu_membase;
-+
-+static struct resource ltq_eiu_resource = {
-+ .name = "eiu",
-+ .start = LTQ_EIU_BASE_ADDR,
-+ .end = LTQ_EIU_BASE_ADDR + LTQ_ICU_SIZE - 1,
-+ .flags = IORESOURCE_MEM,
-+};
-+
-+#endif
-+
-+static struct resource ltq_icu_resource = {
-+ .name = "icu",
-+ .start = LTQ_ICU_BASE_ADDR,
-+ .end = LTQ_ICU_BASE_ADDR + LTQ_ICU_SIZE - 1,
-+ .flags = IORESOURCE_MEM,
-+};
-+
-+#define ltq_icu_w32(x, y) ltq_w32((x), ltq_icu_membase + (y))
-+#define ltq_icu_r32(x) ltq_r32(ltq_icu_membase + (x))
-+
-+static void __iomem *ltq_icu_membase;
-+
-+void
-+ltq_disable_irq(unsigned int irq_nr)
-+{
-+ u32 ier = LTQ_ICU_IM0_IER;
-+
-+ irq_nr -= INT_NUM_IRQ0;
-+ ier += LTQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET);
-+ irq_nr %= INT_NUM_IM_OFFSET;
-+ ltq_icu_w32(ltq_icu_r32(ier) & ~(1 << irq_nr), ier);
-+}
-+
-+void
-+ltq_mask_and_ack_irq(unsigned int irq_nr)
-+{
-+ u32 ier = LTQ_ICU_IM0_IER;
-+ u32 isr = LTQ_ICU_IM0_ISR;
-+
-+ irq_nr -= INT_NUM_IRQ0;
-+ ier += LTQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET);
-+ isr += LTQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET);
-+ irq_nr %= INT_NUM_IM_OFFSET;
-+ ltq_icu_w32(ltq_icu_r32(ier) & ~(1 << irq_nr), ier);
-+ ltq_icu_w32((1 << irq_nr), isr);
-+}
-+EXPORT_SYMBOL(ltq_mask_and_ack_irq);
-+
-+static void
-+ltq_ack_irq(unsigned int irq_nr)
-+{
-+ u32 isr = LTQ_ICU_IM0_ISR;
-+
-+ irq_nr -= INT_NUM_IRQ0;
-+ isr += LTQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET);
-+ irq_nr %= INT_NUM_IM_OFFSET;
-+ ltq_icu_w32((1 << irq_nr), isr);
-+}
-+
-+void
-+ltq_enable_irq(unsigned int irq_nr)
-+{
-+ u32 ier = LTQ_ICU_IM0_IER;
-+
-+ irq_nr -= INT_NUM_IRQ0;
-+ ier += LTQ_ICU_OFFSET * (irq_nr / INT_NUM_IM_OFFSET);
-+ irq_nr %= INT_NUM_IM_OFFSET;
-+ ltq_icu_w32(ltq_icu_r32(ier) | (1 << irq_nr), ier);
-+}
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+static unsigned int
-+ltq_startup_eiu_irq(unsigned int irq)
-+{
-+ int i;
-+
-+ ltq_enable_irq(irq);
-+ for (i = 0; i < MAX_EIU; i++) {
-+ if (irq == ltq_eiu_irq[i]) {
-+ /* low level - we should really handle set_type */
-+ ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_C) | (0x6 << (i * 4)),
-+ LTQ_EIU_EXIN_C);
-+ /* clear all pending */
-+ ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_INIC) & ~(1 << i),
-+ LTQ_EIU_EXIN_INIC);
-+ /* enable */
-+ ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_INEN) | (1 << i),
-+ LTQ_EIU_EXIN_INEN);
-+ break;
-+ }
-+ }
-+ return 0;
-+}
-+
-+static void
-+ltq_shutdown_eiu_irq(unsigned int irq)
-+{
-+ int i;
-+
-+ ltq_disable_irq(irq);
-+ for (i = 0; i < MAX_EIU; i++) {
-+ if (irq == ltq_eiu_irq[i]) {
-+ /* disable */
-+ ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_INEN) & ~(1 << i),
-+ LTQ_EIU_EXIN_INEN);
-+ break;
-+ }
-+ }
-+}
-+#endif
-+
-+static void
-+ltq_end_irq(unsigned int irq)
-+{
-+ if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS)))
-+ ltq_enable_irq(irq);
-+}
-+
-+static struct irq_chip
-+ltq_irq_type = {
-+ "ltq_irq",
-+ .enable = ltq_enable_irq,
-+ .disable = ltq_disable_irq,
-+ .unmask = ltq_enable_irq,
-+ .ack = ltq_ack_irq,
-+ .mask = ltq_disable_irq,
-+ .mask_ack = ltq_mask_and_ack_irq,
-+ .end = ltq_end_irq,
-+};
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+static struct irq_chip
-+ltq_eiu_type = {
-+ "ltq_eiu_irq",
-+ .startup = ltq_startup_eiu_irq,
-+ .shutdown = ltq_shutdown_eiu_irq,
-+ .enable = ltq_enable_irq,
-+ .disable = ltq_disable_irq,
-+ .unmask = ltq_enable_irq,
-+ .ack = ltq_ack_irq,
-+ .mask = ltq_disable_irq,
-+ .mask_ack = ltq_mask_and_ack_irq,
-+ .end = ltq_end_irq,
-+};
-+#endif
-+
-+static void ltq_hw_irqdispatch(int module)
-+{
-+ u32 irq;
-+
-+ irq = ltq_icu_r32(LTQ_ICU_IM0_IOSR + (module * LTQ_ICU_OFFSET));
-+ if (irq == 0)
-+ return;
-+
-+ /* silicon bug causes only the msb set to 1 to be valid. all
-+ * other bits might be bogus
-+ */
-+ irq = __fls(irq);
-+ do_IRQ((int)irq + INT_NUM_IM0_IRL0 + (INT_NUM_IM_OFFSET * module));
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+ /* if this is a EBU irq, we need to ack it or get a deadlock */
-+ if ((irq == LTQ_ICU_EBU_IRQ) && (module == 0))
-+ ltq_ebu_w32(ltq_ebu_r32(LTQ_EBU_PCC_ISTAT) | 0x10,
-+ LTQ_EBU_PCC_ISTAT);
-+#endif
-+}
-+
-+#define DEFINE_HWx_IRQDISPATCH(x) \
-+ static void ltq_hw ## x ## _irqdispatch(void) \
-+ { \
-+ ltq_hw_irqdispatch(x); \
-+ }
-+DEFINE_HWx_IRQDISPATCH(0)
-+DEFINE_HWx_IRQDISPATCH(1)
-+DEFINE_HWx_IRQDISPATCH(2)
-+DEFINE_HWx_IRQDISPATCH(3)
-+DEFINE_HWx_IRQDISPATCH(4)
-+
-+static void ltq_hw5_irqdispatch(void)
-+{
-+ do_IRQ(MIPS_CPU_TIMER_IRQ);
-+}
-+
-+asmlinkage void plat_irq_dispatch(void)
-+{
-+ unsigned int pending = read_c0_status() & read_c0_cause() & ST0_IM;
-+ unsigned int i;
-+
-+ if (pending & CAUSEF_IP7) {
-+ do_IRQ(MIPS_CPU_TIMER_IRQ);
-+ goto out;
-+ } else {
-+ for (i = 0; i < 5; i++) {
-+ if (pending & (CAUSEF_IP2 << i)) {
-+ ltq_hw_irqdispatch(i);
-+ goto out;
-+ }
-+ }
-+ }
-+ pr_alert("Spurious IRQ: CAUSE=0x%08x\n", read_c0_status());
-+
-+out:
-+ return;
-+}
-+
-+static struct irqaction cascade = {
-+ .handler = no_action,
-+ .flags = IRQF_DISABLED,
-+ .name = "cascade",
-+};
-+
-+void __init arch_init_irq(void)
-+{
-+ int i;
-+
-+ if (insert_resource(&iomem_resource, &ltq_icu_resource) < 0)
-+ panic("Failed to insert icu memory\n");
-+
-+ if (request_mem_region(ltq_icu_resource.start,
-+ resource_size(&ltq_icu_resource), "icu") < 0)
-+ panic("Failed to request icu memory\n");
-+
-+ ltq_icu_membase = ioremap_nocache(ltq_icu_resource.start,
-+ resource_size(&ltq_icu_resource));
-+ if (!ltq_icu_membase)
-+ panic("Failed to remap icu memory\n");
-+
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+ if (insert_resource(&iomem_resource, &ltq_eiu_resource) < 0)
-+ panic("Failed to insert eiu memory\n");
-+
-+ if (request_mem_region(ltq_eiu_resource.start,
-+ resource_size(&ltq_eiu_resource), "eiu") < 0)
-+ panic("Failed to request eiu memory\n");
-+
-+ ltq_eiu_membase = ioremap_nocache(ltq_eiu_resource.start,
-+ resource_size(&ltq_eiu_resource));
-+ if (!ltq_eiu_membase)
-+ panic("Failed to remap eiu memory\n");
-+#endif
-+ /* make sure all irqs are turned off by default */
-+ for (i = 0; i < 5; i++)
-+ ltq_icu_w32(0, LTQ_ICU_IM0_IER + (i * LTQ_ICU_OFFSET));
-+
-+ /* clear all possibly pending interrupts */
-+ ltq_icu_w32(~0, LTQ_ICU_IM0_ISR + (i * LTQ_ICU_OFFSET));
-+
-+ mips_cpu_irq_init();
-+
-+ for (i = 2; i <= 6; i++)
-+ setup_irq(i, &cascade);
-+
-+ if (cpu_has_vint) {
-+ pr_info("Setting up vectored interrupts\n");
-+ set_vi_handler(2, ltq_hw0_irqdispatch);
-+ set_vi_handler(3, ltq_hw1_irqdispatch);
-+ set_vi_handler(4, ltq_hw2_irqdispatch);
-+ set_vi_handler(5, ltq_hw3_irqdispatch);
-+ set_vi_handler(6, ltq_hw4_irqdispatch);
-+ set_vi_handler(7, ltq_hw5_irqdispatch);
-+ }
-+
-+ for (i = INT_NUM_IRQ0;
-+ i <= (INT_NUM_IRQ0 + (5 * INT_NUM_IM_OFFSET)); i++)
-+#ifdef CONFIG_SOC_TYPE_XWAY
-+ if ((i == LTQ_EIU_IR0) || (i == LTQ_EIU_IR1) || (i == LTQ_EIU_IR2))
-+ set_irq_chip_and_handler(i, &ltq_eiu_type, handle_level_irq);
-+ /* EIU3-5 only exist on ar9 and vr9 */
-+ else if (((i == LTQ_EIU_IR3) || (i == LTQ_EIU_IR4) ||
-+ (i == LTQ_EIU_IR5)) && (ltq_is_ar9() || ltq_is_vr9()))
-+ set_irq_chip_and_handler(i, &ltq_eiu_type, handle_level_irq);
-+ else
-+#endif
-+ set_irq_chip_and_handler(i, &ltq_irq_type, handle_level_irq);
-+
-+#if !defined(CONFIG_MIPS_MT_SMP) && !defined(CONFIG_MIPS_MT_SMTC)
-+ set_c0_status(IE_IRQ0 | IE_IRQ1 | IE_IRQ2 |
-+ IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
-+#else
-+ set_c0_status(IE_SW0 | IE_SW1 | IE_IRQ0 | IE_IRQ1 |
-+ IE_IRQ2 | IE_IRQ3 | IE_IRQ4 | IE_IRQ5);
-+#endif
-+ cp0_compare_irq = CP0_LEGACY_COMPARE_IRQ;
-+}
-+
-+unsigned int __cpuinit get_c0_compare_int(void)
-+{
-+ return CP0_LEGACY_COMPARE_IRQ;
-+}
---- /dev/null
-+++ b/arch/mips/lantiq/prom.c
-@@ -0,0 +1,71 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+
-+#include <linux/module.h>
-+#include <linux/clk.h>
-+#include <asm/bootinfo.h>
-+#include <asm/time.h>
-+
-+#include <lantiq.h>
-+
-+#include "prom.h"
-+#include "clk.h"
-+
-+static struct ltq_soc_info soc_info;
-+
-+unsigned int ltq_get_cpu_ver(void)
-+{
-+ return soc_info.rev;
-+}
-+EXPORT_SYMBOL(ltq_get_cpu_ver);
-+
-+unsigned int ltq_get_soc_type(void)
-+{
-+ return soc_info.type;
-+}
-+EXPORT_SYMBOL(ltq_get_soc_type);
-+
-+const char *get_system_type(void)
-+{
-+ return soc_info.sys_type;
-+}
-+
-+void prom_free_prom_memory(void)
-+{
-+}
-+
-+static void __init prom_init_cmdline(void)
-+{
-+ int argc = fw_arg0;
-+ char **argv = (char **) KSEG1ADDR(fw_arg1);
-+ int i;
-+
-+ for (i = 0; i < argc; i++) {
-+ char *p = (char *) KSEG1ADDR(argv[i]);
-+
-+ if (p && *p) {
-+ strlcat(arcs_cmdline, p, sizeof(arcs_cmdline));
-+ strlcat(arcs_cmdline, " ", sizeof(arcs_cmdline));
-+ }
-+ }
-+}
-+
-+void __init prom_init(void)
-+{
-+ struct clk *clk;
-+
-+ ltq_soc_detect(&soc_info);
-+ clk_init();
-+ clk = clk_get(0, "cpu");
-+ snprintf(soc_info.sys_type, LTQ_SYS_TYPE_LEN - 1, "%s rev1.%d",
-+ soc_info.name, soc_info.rev);
-+ clk_put(clk);
-+ soc_info.sys_type[LTQ_SYS_TYPE_LEN - 1] = '\0';
-+ pr_info("SoC: %s\n", soc_info.sys_type);
-+ prom_init_cmdline();
-+}
---- /dev/null
-+++ b/arch/mips/lantiq/prom.h
-@@ -0,0 +1,24 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+
-+#ifndef _LTQ_PROM_H__
-+#define _LTQ_PROM_H__
-+
-+#define LTQ_SYS_TYPE_LEN 0x100
-+
-+struct ltq_soc_info {
-+ unsigned char *name;
-+ unsigned int rev;
-+ unsigned int partnum;
-+ unsigned int type;
-+ unsigned char sys_type[LTQ_SYS_TYPE_LEN];
-+};
-+
-+extern void ltq_soc_detect(struct ltq_soc_info *i);
-+
-+#endif
---- /dev/null
-+++ b/arch/mips/lantiq/setup.c
-@@ -0,0 +1,41 @@
-+/*
-+ * 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.
-+ *
-+ * Copyright (C) 2010 John Crispin <blogic@openwrt.org>
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/module.h>
-+#include <linux/io.h>
-+#include <linux/ioport.h>
-+#include <asm/bootinfo.h>
-+
-+#include <lantiq_soc.h>
-+
-+void __init plat_mem_setup(void)
-+{
-+ /* assume 16M as default incase uboot fails to pass proper ramsize */
-+ unsigned long memsize = 16;
-+ char **envp = (char **) KSEG1ADDR(fw_arg2);
-+
-+ ioport_resource.start = IOPORT_RESOURCE_START;
-+ ioport_resource.end = IOPORT_RESOURCE_END;
-+ iomem_resource.start = IOMEM_RESOURCE_START;
-+ iomem_resource.end = IOMEM_RESOURCE_END;
-+
-+ set_io_port_base((unsigned long) KSEG1);
-+
-+ while (*envp) {
-+ char *e = (char *)KSEG1ADDR(*envp);
-+ if (!strncmp(e, "memsize=", 8)) {
-+ e += 8;
-+ if (strict_strtoul(e, 0, &memsize))
-+ pr_warn("bad memsize specified\n");
-+ }
-+ envp++;
-+ }
-+ memsize *= 1024 * 1024;
-+ add_memory_region(0x00000000, memsize, BOOT_MEM_RAM);
-+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 20:10:28 +0000