diff options
Diffstat (limited to 'target/linux/lantiq/patches-2.6.39/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch')
| -rw-r--r-- | target/linux/lantiq/patches-2.6.39/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch | 894 |
1 files changed, 894 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-2.6.39/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch b/target/linux/lantiq/patches-2.6.39/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch new file mode 100644 index 0000000..c7f96cd --- /dev/null +++ b/target/linux/lantiq/patches-2.6.39/0001-MIPS-Lantiq-Add-initial-support-for-Lantiq-SoCs.patch @@ -0,0 +1,894 @@ +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 +@@ -212,6 +212,23 @@ + select HAVE_PWM + select HAVE_CLK + ++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(struct irq_data *d); ++extern void ltq_mask_and_ack_irq(struct irq_data *d); ++extern void ltq_enable_irq(struct irq_data *d); ++ ++/* 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, <q_cgu_resource) < 0) ++ panic("Failed to insert cgu memory\n"); ++ ++ if (request_mem_region(ltq_cgu_resource.start, ++ resource_size(<q_cgu_resource), "cgu") < 0) ++ panic("Failed to request cgu memory\n"); ++ ++ ltq_cgu_membase = ioremap_nocache(ltq_cgu_resource.start, ++ resource_size(<q_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 +1,339 @@ ++/* ++ * 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(struct irq_data *d) ++{ ++ u32 ier = LTQ_ICU_IM0_IER; ++ int irq_nr = d->irq - 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(struct irq_data *d) ++{ ++ u32 ier = LTQ_ICU_IM0_IER; ++ u32 isr = LTQ_ICU_IM0_ISR; ++ int irq_nr = d->irq - 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(struct irq_data *d) ++{ ++ u32 isr = LTQ_ICU_IM0_ISR; ++ int irq_nr = d->irq - 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(struct irq_data *d) ++{ ++ u32 ier = LTQ_ICU_IM0_IER; ++ int irq_nr = d->irq - 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(struct irq_data *d) ++{ ++ int i; ++ int irq_nr = d->irq - INT_NUM_IRQ0; ++ ++ ltq_enable_irq(d); ++ for (i = 0; i < MAX_EIU; i++) { ++ if (irq_nr == 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(struct irq_data *d) ++{ ++ int i; ++ int irq_nr = d->irq - INT_NUM_IRQ0; ++ ++ ltq_disable_irq(d); ++ for (i = 0; i < MAX_EIU; i++) { ++ if (irq_nr == ltq_eiu_irq[i]) { ++ /* disable */ ++ ltq_eiu_w32(ltq_eiu_r32(LTQ_EIU_EXIN_INEN) & ~(1 << i), ++ LTQ_EIU_EXIN_INEN); ++ break; ++ } ++ } ++} ++#endif ++ ++static struct irq_chip ltq_irq_type = { ++ "icu", ++ .irq_enable = ltq_enable_irq, ++ .irq_disable = ltq_disable_irq, ++ .irq_unmask = ltq_enable_irq, ++ .irq_ack = ltq_ack_irq, ++ .irq_mask = ltq_disable_irq, ++ .irq_mask_ack = ltq_mask_and_ack_irq, ++}; ++ ++#ifdef CONFIG_SOC_TYPE_XWAY ++static struct irq_chip ltq_eiu_type = { ++ "eiu", ++ .irq_startup = ltq_startup_eiu_irq, ++ .irq_shutdown = ltq_shutdown_eiu_irq, ++ .irq_enable = ltq_enable_irq, ++ .irq_disable = ltq_disable_irq, ++ .irq_unmask = ltq_enable_irq, ++ .irq_ack = ltq_ack_irq, ++ .irq_mask = ltq_disable_irq, ++ .irq_mask_ack = ltq_mask_and_ack_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, <q_icu_resource) < 0) ++ panic("Failed to insert icu memory\n"); ++ ++ if (request_mem_region(ltq_icu_resource.start, ++ resource_size(<q_icu_resource), "icu") < 0) ++ panic("Failed to request icu memory\n"); ++ ++ ltq_icu_membase = ioremap_nocache(ltq_icu_resource.start, ++ resource_size(<q_icu_resource)); ++ if (!ltq_icu_membase) ++ panic("Failed to remap icu memory\n"); ++ ++#ifdef CONFIG_SOC_TYPE_XWAY ++ if (insert_resource(&iomem_resource, <q_eiu_resource) < 0) ++ panic("Failed to insert eiu memory\n"); ++ ++ if (request_mem_region(ltq_eiu_resource.start, ++ resource_size(<q_eiu_resource), "eiu") < 0) ++ panic("Failed to request eiu memory\n"); ++ ++ ltq_eiu_membase = ioremap_nocache(ltq_eiu_resource.start, ++ resource_size(<q_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)) ++ irq_set_chip_and_handler(i, <q_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())) ++ irq_set_chip_and_handler(i, <q_eiu_type, handle_level_irq); ++ else ++#endif ++ irq_set_chip_and_handler(i, <q_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 ++} ++ ++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); ++} +--- a/arch/mips/Kbuild.platforms ++++ b/arch/mips/Kbuild.platforms +@@ -11,6 +11,7 @@ + platforms += emma + platforms += jazz + platforms += jz4740 ++platforms += lantiq + platforms += lasat + platforms += loongson + platforms += mipssim |