From: "Steven J. Hill" <sjhill@xxxxxxxx> More information about the SEAD-3 platform can be found at <http://www.mips.com/products/development-kits/mips-sead-3/> on MTI's site. Currently, the M14K family of cores is what the SEAD-3 is utilised with. Signed-off-by: Douglas Leung <douglas@xxxxxxxx> Signed-off-by: Chris Dearman <chris@xxxxxxxx> Signed-off-by: Steven J. Hill <sjhill@xxxxxxxx> --- .../include/asm/mach-sead3/cpu-feature-overrides.h | 72 ++++ arch/mips/include/asm/mach-sead3/irq.h | 9 + .../include/asm/mach-sead3/kernel-entry-init.h | 52 +++ arch/mips/include/asm/mach-sead3/war.h | 25 ++ arch/mips/include/asm/mips-boards/sead3int.h | 67 +++ arch/mips/mti-sead3/Makefile | 24 ++ arch/mips/mti-sead3/Platform | 7 + arch/mips/mti-sead3/leds-sead3.c | 133 ++++++ arch/mips/mti-sead3/sead3-cmdline.c | 59 +++ arch/mips/mti-sead3/sead3-console.c | 52 +++ arch/mips/mti-sead3/sead3-display.c | 90 ++++ arch/mips/mti-sead3/sead3-ehci.c | 52 +++ arch/mips/mti-sead3/sead3-i2c-dev.c | 38 ++ arch/mips/mti-sead3/sead3-i2c.c | 42 ++ arch/mips/mti-sead3/sead3-init.c | 244 +++++++++++ arch/mips/mti-sead3/sead3-int.c | 146 +++++++ arch/mips/mti-sead3/sead3-lcd.c | 55 +++ arch/mips/mti-sead3/sead3-leds.c | 91 ++++ arch/mips/mti-sead3/sead3-memory.c | 178 ++++++++ arch/mips/mti-sead3/sead3-mtd.c | 58 +++ arch/mips/mti-sead3/sead3-net.c | 56 +++ arch/mips/mti-sead3/sead3-pic32-bus.c | 112 +++++ arch/mips/mti-sead3/sead3-pic32-i2c-drv.c | 441 ++++++++++++++++++++ arch/mips/mti-sead3/sead3-platform.c | 49 +++ arch/mips/mti-sead3/sead3-reset.c | 64 +++ arch/mips/mti-sead3/sead3-setup.c | 49 +++ arch/mips/mti-sead3/sead3-smtc.c | 162 +++++++ arch/mips/mti-sead3/sead3-time.c | 145 +++++++ 28 files changed, 2572 insertions(+) create mode 100644 arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h create mode 100644 arch/mips/include/asm/mach-sead3/irq.h create mode 100644 arch/mips/include/asm/mach-sead3/kernel-entry-init.h create mode 100644 arch/mips/include/asm/mach-sead3/war.h create mode 100644 arch/mips/include/asm/mips-boards/sead3int.h create mode 100644 arch/mips/mti-sead3/Makefile create mode 100644 arch/mips/mti-sead3/Platform create mode 100644 arch/mips/mti-sead3/leds-sead3.c create mode 100644 arch/mips/mti-sead3/sead3-cmdline.c create mode 100644 arch/mips/mti-sead3/sead3-console.c create mode 100644 arch/mips/mti-sead3/sead3-display.c create mode 100644 arch/mips/mti-sead3/sead3-ehci.c create mode 100644 arch/mips/mti-sead3/sead3-i2c-dev.c create mode 100644 arch/mips/mti-sead3/sead3-i2c.c create mode 100644 arch/mips/mti-sead3/sead3-init.c create mode 100644 arch/mips/mti-sead3/sead3-int.c create mode 100644 arch/mips/mti-sead3/sead3-lcd.c create mode 100644 arch/mips/mti-sead3/sead3-leds.c create mode 100644 arch/mips/mti-sead3/sead3-memory.c create mode 100644 arch/mips/mti-sead3/sead3-mtd.c create mode 100644 arch/mips/mti-sead3/sead3-net.c create mode 100644 arch/mips/mti-sead3/sead3-pic32-bus.c create mode 100644 arch/mips/mti-sead3/sead3-pic32-i2c-drv.c create mode 100644 arch/mips/mti-sead3/sead3-platform.c create mode 100644 arch/mips/mti-sead3/sead3-reset.c create mode 100644 arch/mips/mti-sead3/sead3-setup.c create mode 100644 arch/mips/mti-sead3/sead3-smtc.c create mode 100644 arch/mips/mti-sead3/sead3-time.c diff --git a/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h new file mode 100644 index 0000000..7f3e3f9 --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/cpu-feature-overrides.h @@ -0,0 +1,72 @@ +/* + * 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, 2004 Chris Dearman + * Copyright (C) 2005 Ralf Baechle (ralf@xxxxxxxxxxxxxx) + */ +#ifndef __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H +#define __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H + + +/* + * CPU feature overrides for MIPS boards + */ +#ifdef CONFIG_CPU_MIPS32 +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_4k_cache 1 +/* #define cpu_has_fpu ? */ +/* #define cpu_has_32fpr ? */ +#define cpu_has_counter 1 +/* #define cpu_has_watch ? */ +#define cpu_has_divec 1 +#define cpu_has_vce 0 +/* #define cpu_has_cache_cdex_p ? */ +/* #define cpu_has_cache_cdex_s ? */ +/* #define cpu_has_prefetch ? */ +#define cpu_has_mcheck 1 +/* #define cpu_has_ejtag ? */ +#ifdef CONFIG_CPU_HAS_LLSC +#define cpu_has_llsc 1 +#else +#define cpu_has_llsc 0 +#endif +/* #define cpu_has_vtag_icache ? */ +/* #define cpu_has_dc_aliases ? */ +/* #define cpu_has_ic_fills_f_dc ? */ +#define cpu_has_nofpuex 0 +/* #define cpu_has_64bits ? */ +/* #define cpu_has_64bit_zero_reg ? */ +/* #define cpu_has_inclusive_pcaches ? */ +#define cpu_icache_snoops_remote_store 1 +#endif + +#ifdef CONFIG_CPU_MIPS64 +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_4k_cache 1 +/* #define cpu_has_fpu ? */ +/* #define cpu_has_32fpr ? */ +#define cpu_has_counter 1 +/* #define cpu_has_watch ? */ +#define cpu_has_divec 1 +#define cpu_has_vce 0 +/* #define cpu_has_cache_cdex_p ? */ +/* #define cpu_has_cache_cdex_s ? */ +/* #define cpu_has_prefetch ? */ +#define cpu_has_mcheck 1 +/* #define cpu_has_ejtag ? */ +#define cpu_has_llsc 1 +/* #define cpu_has_vtag_icache ? */ +/* #define cpu_has_dc_aliases ? */ +/* #define cpu_has_ic_fills_f_dc ? */ +#define cpu_has_nofpuex 0 +/* #define cpu_has_64bits ? */ +/* #define cpu_has_64bit_zero_reg ? */ +/* #define cpu_has_inclusive_pcaches ? */ +#define cpu_icache_snoops_remote_store 1 +#endif + +#endif /* __ASM_MACH_MIPS_CPU_FEATURE_OVERRIDES_H */ diff --git a/arch/mips/include/asm/mach-sead3/irq.h b/arch/mips/include/asm/mach-sead3/irq.h new file mode 100644 index 0000000..652ea4c --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/irq.h @@ -0,0 +1,9 @@ +#ifndef __ASM_MACH_MIPS_IRQ_H +#define __ASM_MACH_MIPS_IRQ_H + +#define NR_IRQS 256 + + +#include_next <irq.h> + +#endif /* __ASM_MACH_MIPS_IRQ_H */ diff --git a/arch/mips/include/asm/mach-sead3/kernel-entry-init.h b/arch/mips/include/asm/mach-sead3/kernel-entry-init.h new file mode 100644 index 0000000..3dfbd8e --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/kernel-entry-init.h @@ -0,0 +1,52 @@ +/* + * 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. + * + * Chris Dearman (chris@xxxxxxxx) + * Copyright (C) 2007 Mips Technologies, Inc. + */ +#ifndef __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H +#define __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H + + .macro kernel_entry_setup +#ifdef CONFIG_MIPS_MT_SMTC + mfc0 t0, CP0_CONFIG + bgez t0, 9f + mfc0 t0, CP0_CONFIG, 1 + bgez t0, 9f + mfc0 t0, CP0_CONFIG, 2 + bgez t0, 9f + mfc0 t0, CP0_CONFIG, 3 + and t0, 1<<2 + bnez t0, 0f +9 : + /* Assume we came from YAMON... */ + PTR_LA v0, 0x9fc00534 /* YAMON print */ + lw v0, (v0) + move a0, zero + PTR_LA a1, nonmt_processor + jal v0 + + PTR_LA v0, 0x9fc00520 /* YAMON exit */ + lw v0, (v0) + li a0, 1 + jal v0 + +1 : b 1b + + __INITDATA +nonmt_processor : + .asciz "SMTC kernel requires the MT ASE to run\n" + __FINIT +0 : +#endif + .endm + +/* + * Do SMP slave processor setup necessary before we can safely execute C code. + */ + .macro smp_slave_setup + .endm + +#endif /* __ASM_MACH_MIPS_KERNEL_ENTRY_INIT_H */ diff --git a/arch/mips/include/asm/mach-sead3/war.h b/arch/mips/include/asm/mach-sead3/war.h new file mode 100644 index 0000000..7c6931d --- /dev/null +++ b/arch/mips/include/asm/mach-sead3/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) 2002, 2004, 2007 by Ralf Baechle <ralf@xxxxxxxxxxxxxx> + */ +#ifndef __ASM_MIPS_MACH_MIPS_WAR_H +#define __ASM_MIPS_MACH_MIPS_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 1 +#define MIPS_CACHE_SYNC_WAR 1 +#define TX49XX_ICACHE_INDEX_INV_WAR 0 +#define RM9000_CDEX_SMP_WAR 0 +#define ICACHE_REFILLS_WORKAROUND_WAR 1 +#define R10000_LLSC_WAR 0 +#define MIPS34K_MISSED_ITLB_WAR 0 + +#endif /* __ASM_MIPS_MACH_MIPS_WAR_H */ diff --git a/arch/mips/include/asm/mips-boards/sead3int.h b/arch/mips/include/asm/mips-boards/sead3int.h new file mode 100644 index 0000000..2563b82 --- /dev/null +++ b/arch/mips/include/asm/mips-boards/sead3int.h @@ -0,0 +1,67 @@ +/* + * Douglas Leung, douglas@xxxxxxxx + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * + * ######################################################################## + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * ######################################################################## + * + * Defines for the SEAD3 interrupt controller. + * + */ +#ifndef _MIPS_SEAD3INT_H +#define _MIPS_SEAD3INT_H + +/* + * SEAD3 GIC's address space definitions + */ +#define GIC_BASE_ADDR 0x1b1c0000 +#define GIC_ADDRSPACE_SZ (128 * 1024) + +/* GIC's Nomenclature for Core Interrupt Pins on the SEAD3 */ +#define GIC_CPU_INT0 0 /* Core Interrupt 2 */ +#define GIC_CPU_INT1 1 /* . */ +#define GIC_CPU_INT2 2 /* . */ +#define GIC_CPU_INT3 3 /* . */ +#define GIC_CPU_INT4 4 /* . */ +#define GIC_CPU_INT5 5 /* Core Interrupt 7 */ + +/* SEAD3 GIC local interrupts */ +#define GIC_INT_TMR (GIC_CPU_INT5) +#define GIC_INT_PERFCTR (GIC_CPU_INT5) + +/* SEAD3 GIC constants */ +/* Add 2 to convert non-eic hw int # to eic vector # */ +#define GIC_CPU_TO_VEC_OFFSET (2) + +/* GIC constants */ +/* If we map an intr to pin X, GIC will actually generate vector X+1 */ +#define GIC_PIN_TO_VEC_OFFSET (1) + +#define GIC_EXT_INTR(x) x + +/* Dummy data */ +#define X 0xdead + +/* External Interrupts used for IPI */ +/* Currently linux don't know about GIC => GIC base must be same as what Linux is using */ +#define MIPS_GIC_IRQ_BASE (MIPS_CPU_IRQ_BASE + 0) + +#ifndef __ASSEMBLY__ +extern void sead3int_init(void); +#endif + +#endif /* !(_MIPS_SEAD3INT_H) */ diff --git a/arch/mips/mti-sead3/Makefile b/arch/mips/mti-sead3/Makefile new file mode 100644 index 0000000..8797977 --- /dev/null +++ b/arch/mips/mti-sead3/Makefile @@ -0,0 +1,24 @@ +# +# Carsten Langgaard, carstenl@xxxxxxxx +# Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. +# +# Copyright (C) 2008 Wind River Systems, Inc. +# written by Ralf Baechle <ralf@xxxxxxxxxxxxxx> +# +obj-y := sead3-lcd.o sead3-cmdline.o \ + sead3-display.o sead3-init.o sead3-int.o \ + sead3-mtd.o sead3-net.o \ + sead3-memory.o sead3-platform.o \ + sead3-reset.o sead3-setup.o sead3-time.o + +obj-y += sead3-i2c-dev.o sead3-i2c.o \ + sead3-pic32-i2c-drv.o sead3-pic32-bus.o \ + leds-sead3.o sead3-leds.o + +obj-$(CONFIG_EARLY_PRINTK) += sead3-console.o +obj-$(CONFIG_USB_EHCI_HCD) += sead3-ehci.o + +# FIXME +obj-$(CONFIG_MIPS_MT_SMTC) += sead3-smtc.o + +EXTRA_CFLAGS += -Werror diff --git a/arch/mips/mti-sead3/Platform b/arch/mips/mti-sead3/Platform new file mode 100644 index 0000000..596e484 --- /dev/null +++ b/arch/mips/mti-sead3/Platform @@ -0,0 +1,7 @@ +# +# MIPS Sead3 board +# +platform-$(CONFIG_MIPS_SEAD3) += mti-sead3/ +cflags-$(CONFIG_MIPS_SEAD3) += -I$(srctree)/arch/mips/include/asm/mach-sead3 +load-$(CONFIG_MIPS_SEAD3) += 0xffffffff80100000 +all-$(CONFIG_MIPS_SEAD3) := $(COMPRESSION_FNAME).srec diff --git a/arch/mips/mti-sead3/leds-sead3.c b/arch/mips/mti-sead3/leds-sead3.c new file mode 100644 index 0000000..89954ce --- /dev/null +++ b/arch/mips/mti-sead3/leds-sead3.c @@ -0,0 +1,133 @@ +/* + * LEDs driver for SEAD3 + * + * Copyright (C) 2006 Kristian Kielhofner <kris@xxxxxxxxx> + * + * Based on leds-wrap.c + * + * 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. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <linux/err.h> +#include <asm/io.h> + +#define DRVNAME "sead3-led" + +static struct platform_device *pdev; + +static void sead3_pled_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + pr_debug("sead3_pled_set\n"); + writel(value, (void __iomem *)0xBF000210); /* FIXME */ +} + +static void sead3_fled_set(struct led_classdev *led_cdev, + enum led_brightness value) +{ + pr_debug("sead3_fled_set\n"); + writel(value, (void __iomem *)0xBF000218); /* FIXME */ +} + +static struct led_classdev sead3_pled = { + .name = "sead3::pled", + .brightness_set = sead3_pled_set, +}; + +static struct led_classdev sead3_fled = { + .name = "sead3::fled", + .brightness_set = sead3_fled_set, +}; + +#ifdef CONFIG_PM +static int sead3_led_suspend(struct platform_device *dev, + pm_message_t state) +{ + led_classdev_suspend(&sead3_pled); + led_classdev_suspend(&sead3_fled); + return 0; +} + +static int sead3_led_resume(struct platform_device *dev) +{ + led_classdev_resume(&sead3_pled); + led_classdev_resume(&sead3_fled); + return 0; +} +#else +#define sead3_led_suspend NULL +#define sead3_led_resume NULL +#endif + +static int sead3_led_probe(struct platform_device *pdev) +{ + int ret; + + ret = led_classdev_register(&pdev->dev, &sead3_pled); + if (ret < 0) + return ret; + + ret = led_classdev_register(&pdev->dev, &sead3_fled); + if (ret < 0) + led_classdev_unregister(&sead3_pled); + + return ret; +} + +static int sead3_led_remove(struct platform_device *pdev) +{ + led_classdev_unregister(&sead3_pled); + led_classdev_unregister(&sead3_fled); + return 0; +} + +static struct platform_driver sead3_led_driver = { + .probe = sead3_led_probe, + .remove = sead3_led_remove, + .suspend = sead3_led_suspend, + .resume = sead3_led_resume, + .driver = { + .name = DRVNAME, + .owner = THIS_MODULE, + }, +}; + +static int __init sead3_led_init(void) +{ + int ret; + + ret = platform_driver_register(&sead3_led_driver); + if (ret < 0) + goto out; + + pdev = platform_device_register_simple(DRVNAME, -1, NULL, 0); + if (IS_ERR(pdev)) { + ret = PTR_ERR(pdev); + platform_driver_unregister(&sead3_led_driver); + goto out; + } + +out: + return ret; +} + +static void __exit sead3_led_exit(void) +{ + platform_device_unregister(pdev); + platform_driver_unregister(&sead3_led_driver); +} + +module_init(sead3_led_init); +module_exit(sead3_led_exit); + +MODULE_AUTHOR("Kristian Kielhofner <kris@xxxxxxxxx>"); +MODULE_DESCRIPTION("SEAD3 LED driver"); +MODULE_LICENSE("GPL"); + diff --git a/arch/mips/mti-sead3/sead3-cmdline.c b/arch/mips/mti-sead3/sead3-cmdline.c new file mode 100644 index 0000000..8d6ad39 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-cmdline.c @@ -0,0 +1,59 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Kernel command line creation using the prom monitor (YAMON) argc/argv. + */ +#include <linux/init.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> + +extern int prom_argc; +extern int *_prom_argv; + +/* + * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. + * This macro take care of sign extension. + */ +#define prom_argv(index) ((char *)(long)_prom_argv[(index)]) + +char * __init prom_getcmdline(void) +{ + return &(arcs_cmdline[0]); +} + + +void __init prom_init_cmdline(void) +{ + char *cp; + int actr; + + actr = 1; /* Always ignore argv[0] */ + + cp = &(arcs_cmdline[0]); + while (actr < prom_argc) { + strcpy(cp, prom_argv(actr)); + cp += strlen(prom_argv(actr)); + *cp++ = ' '; + actr++; + } + if (cp != &(arcs_cmdline[0])) { + /* get rid of trailing space */ + --cp; + *cp = '\0'; + } +} diff --git a/arch/mips/mti-sead3/sead3-console.c b/arch/mips/mti-sead3/sead3-console.c new file mode 100644 index 0000000..a799a5d --- /dev/null +++ b/arch/mips/mti-sead3/sead3-console.c @@ -0,0 +1,52 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + */ +#include <linux/console.h> +#include <linux/init.h> +#include <linux/serial_reg.h> +#include <asm/io.h> + + +#define SEAD_UART1_REGS_BASE 0xbf000800 /* ttyS1 = RS232 port */ +#define SEAD_UART0_REGS_BASE 0xbf000900 /* ttyS0 = USB port */ + +#define PORT(base_addr, offset) ((unsigned int __iomem *)(base_addr+(offset)*4)) + +static inline unsigned int serial_in(int offset, unsigned int base_addr) +{ + return __raw_readl(PORT(base_addr, offset)) & 0xff; +} + +static inline void serial_out(int offset, int value, unsigned int base_addr) +{ + __raw_writel(value, PORT(base_addr, offset)); +} + +int prom_putchar(char c, char port) +{ + unsigned int base_addr; + + base_addr = port ? SEAD_UART1_REGS_BASE : SEAD_UART0_REGS_BASE; + + while ((serial_in(UART_LSR, base_addr) & UART_LSR_THRE) == 0) + ; + + serial_out(UART_TX, c, base_addr); + + return 1; +} diff --git a/arch/mips/mti-sead3/sead3-display.c b/arch/mips/mti-sead3/sead3-display.c new file mode 100644 index 0000000..f6e2231 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-display.c @@ -0,0 +1,90 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + */ + +#include <linux/compiler.h> +#include <linux/timer.h> +#include <asm/io.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> + +extern const char display_string[]; +static unsigned int display_count; +static unsigned int max_display_count; + +#define DISPLAY_LCDINSTRUCTION (0*2) +#define DISPLAY_LCDDATA (1*2) +#define DISPLAY_CPLDSTATUS (2*2) +#define DISPLAY_CPLDDATA (3*2) +#define LCD_SETDDRAM 0x80 +#define LCD_IR_BF 0x80 + +static void lcd_wait(unsigned int __iomem *display) +{ + /* wait for CPLD state machine to become idle */ + do { + } while (__raw_readl(display + DISPLAY_CPLDSTATUS) & 1); + + do { + __raw_readl(display + DISPLAY_LCDINSTRUCTION); + + /* wait for CPLD state machine to become idle */ + do { + } while (__raw_readl(display + DISPLAY_CPLDSTATUS) & 1); + } while (__raw_readl(display + DISPLAY_CPLDDATA) & LCD_IR_BF); +} + +void mips_display_message(const char *str) +{ + static unsigned int __iomem *display; /* static => auto initialized to NULL */ + int i; + char ch; + + if (unlikely(display == NULL)) + display = ioremap_nocache(LCD_DISPLAY_POS_BASE, 4*2*sizeof(int)); + + for (i = 0; i < 16; i++) { + if (*str) + ch = *str++; + else + ch = ' '; + lcd_wait(display); + __raw_writel(LCD_SETDDRAM | i, display + DISPLAY_LCDINSTRUCTION); + lcd_wait(display); + __raw_writel(ch, display + DISPLAY_LCDDATA); + } +} + +static void scroll_display_message(unsigned long data); +static DEFINE_TIMER(mips_scroll_timer, scroll_display_message, HZ, 0); + +static void scroll_display_message(unsigned long data) +{ + mips_display_message(&display_string[display_count++]); + if (display_count == max_display_count) + display_count = 0; + + mod_timer(&mips_scroll_timer, jiffies + HZ); +} + +void mips_scroll_message(void) +{ + del_timer_sync(&mips_scroll_timer); + max_display_count = strlen(display_string) + 1 - 16; + mod_timer(&mips_scroll_timer, jiffies + 1); +} diff --git a/arch/mips/mti-sead3/sead3-ehci.c b/arch/mips/mti-sead3/sead3-ehci.c new file mode 100644 index 0000000..cf4d93c --- /dev/null +++ b/arch/mips/mti-sead3/sead3-ehci.c @@ -0,0 +1,52 @@ +/* + * 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) 2009 MIPS Technologies, vInc. + * written by Chris Dearman (chris@xxxxxxxx) + * + * Probe driver for the SEAD3 EHCI device + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/dma-mapping.h> +#include <irq.h> + +struct resource ehci_resources[] = { + { + .start = 0x1b200000, + .end = 0x1b200fff, + .flags = IORESOURCE_MEM + }, + { + .start = MIPS_CPU_IRQ_BASE + 2, + .flags = IORESOURCE_IRQ + } +}; + +u64 sead3_usbdev_dma_mask = DMA_BIT_MASK(32); + +static struct platform_device ehci_device = { + .name = "sead3-ehci", + .id = 0, + .dev = { + .dma_mask = &sead3_usbdev_dma_mask, + .coherent_dma_mask = DMA_BIT_MASK(32) + }, + .num_resources = ARRAY_SIZE(ehci_resources), + .resource = ehci_resources +}; + +static int __init ehci_init(void) +{ + return platform_device_register(&ehci_device); +} + +module_init(ehci_init); + +MODULE_AUTHOR("Chris Dearman <chris@xxxxxxxx>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("EHCI probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-i2c-dev.c b/arch/mips/mti-sead3/sead3-i2c-dev.c new file mode 100644 index 0000000..7e7a911 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-i2c-dev.c @@ -0,0 +1,38 @@ +#define DEBUG +/* + * 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. + * + */ + +#include <linux/i2c.h> +#include <linux/init.h> +#include <linux/kernel.h> + +static struct i2c_board_info sead3_i2c_info2[] __initdata = { + { + I2C_BOARD_INFO("adt7476", 0x2c), + .irq = 0, + }, + { + I2C_BOARD_INFO("m41t80", 0x68), + .irq = 0, + }, +}; + +static int __init sead3_i2c_init(void) +{ + int err; + + pr_debug("sead3_i2c_init\n"); + + err = i2c_register_board_info(2, sead3_i2c_info2, + ARRAY_SIZE(sead3_i2c_info2)); + if (err < 0) + printk(KERN_ERR + "sead3-i2c-dev: cannot register board I2C devices\n"); + return err; +} + +arch_initcall(sead3_i2c_init); diff --git a/arch/mips/mti-sead3/sead3-i2c.c b/arch/mips/mti-sead3/sead3-i2c.c new file mode 100644 index 0000000..bf5f8d3 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-i2c.c @@ -0,0 +1,42 @@ +/* + * 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) 2007 MIPS Technologies, Inc. + * written by Ralf Baechle (ralf@xxxxxxxxxxxxxx) + * + * Probe driver for the SEAD3 network device + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <irq.h> + + +struct resource i2c_resources[] = { + { + .start = 0x805200, + .end = 0x8053FF, + .flags = IORESOURCE_MEM + }, +}; + +static struct platform_device i2c_device = { + .name = "i2c_pic32", + .id = 2, + .num_resources = ARRAY_SIZE(i2c_resources), + .resource = i2c_resources +}; + +static int __init i2c_init(void) +{ + return platform_device_register(&i2c_device); +} + +module_init(i2c_init); + +MODULE_AUTHOR("Chris Dearman <chris@xxxxxxxx>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("I2C probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-init.c b/arch/mips/mti-sead3/sead3-init.c new file mode 100644 index 0000000..14e0c49 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-init.c @@ -0,0 +1,244 @@ +/* + * Copyright (C) 1999, 2000, 2004, 2005 MIPS Technologies, Inc. + * All rights reserved. + * Authors: Carsten Langgaard <carstenl@xxxxxxxx> + * Maciej W. Rozycki <macro@xxxxxxxx> + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * PROM library initialisation code. + */ +#include <linux/init.h> +#include <linux/string.h> +#include <linux/kernel.h> + +#include <asm/bootinfo.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/cacheflush.h> +#include <asm/traps.h> + +#include <asm/mips-boards/prom.h> +#include <asm/mips-boards/generic.h> + +int prom_argc; +int *_prom_argv, *_prom_envp; + +/* + * YAMON (32-bit PROM) pass arguments and environment as 32-bit pointer. + * This macro take care of sign extension, if running in 64-bit mode. + */ +#define prom_envp(index) ((char *)(long)_prom_envp[(index)]) + +int init_debug; /* global var => auto initialized to 0 */ + +int mips_revision_corid; +int mips_revision_sconid; + +char *prom_getenv(char *envname) +{ + /* + * Return a pointer to the given environment variable. + * In 64-bit mode: we're using 64-bit pointers, but all pointers + * in the PROM structures are only 32-bit, so we need some + * workarounds, if we are running in 64-bit mode. + */ + int i, index = 0; + + i = strlen(envname); + + while (prom_envp(index)) { + if (strncmp(envname, prom_envp(index), i) == 0) + return prom_envp(index+1); + index += 2; + } + + return NULL; +} + +static inline unsigned char str2hexnum(unsigned char c) +{ + if (c >= '0' && c <= '9') + return c - '0'; + if (c >= 'a' && c <= 'f') + return c - 'a' + 10; + return 0; /* foo */ +} + +static inline void str2eaddr(unsigned char *ea, unsigned char *str) +{ + int i; + + for (i = 0; i < 6; i++) { + unsigned char num; + + if ((*str == '.') || (*str == ':')) + str++; + num = str2hexnum(*str++) << 4; + num |= (str2hexnum(*str++)); + ea[i] = num; + } +} + +int get_ethernet_addr(char *ethernet_addr) +{ + char *ethaddr_str; + + ethaddr_str = prom_getenv("ethaddr"); + if (!ethaddr_str) { + printk("ethaddr not set in boot prom\n"); + return -1; + } + str2eaddr(ethernet_addr, ethaddr_str); + + if (init_debug > 1) { + int i; + printk("get_ethernet_addr: "); + for (i = 0; i < 5; i++) + printk("%02x:", (unsigned char)*(ethernet_addr+i)); + printk("%02x\n", *(ethernet_addr+i)); + } + + return 0; +} + +#ifdef CONFIG_SERIAL_8250_CONSOLE +static void __init console_config(void) +{ + char console_string[40]; + int baud = 0; + char parity = '\0', bits = '\0', flow = '\0'; + char *s; + + if ((strstr(prom_getcmdline(), "console=")) == NULL) { + s = prom_getenv("modetty0"); + if (s) { + while (*s >= '0' && *s <= '9') + baud = baud*10 + *s++ - '0'; + if (*s == ',') + s++; + if (*s) + parity = *s++; + if (*s == ',') + s++; + if (*s) + bits = *s++; + if (*s == ',') + s++; + if (*s == 'h') + flow = 'r'; + } + if (baud == 0) + baud = 38400; + if (parity != 'n' && parity != 'o' && parity != 'e') + parity = 'n'; + if (bits != '7' && bits != '8') + bits = '8'; + if (flow == '\0') + flow = 'r'; + sprintf(console_string, " console=ttyS0,%d%c%c%c", baud, parity, bits, flow); + strcat(prom_getcmdline(), console_string); + pr_info("Config serial console:%s\n", console_string); + } +} +#endif + +static void __init mips_nmi_setup(void) +{ + void *base; + extern char except_vec_nmi; + + base = cpu_has_veic ? + (void *)(CAC_BASE + 0xa80) : + (void *)(CAC_BASE + 0x380); + memcpy(base, &except_vec_nmi, 0x80); + flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); +} + +static void __init mips_ejtag_setup(void) +{ + void *base; + extern char except_vec_ejtag_debug; + + base = cpu_has_veic ? + (void *)(CAC_BASE + 0xa00) : + (void *)(CAC_BASE + 0x300); + memcpy(base, &except_vec_ejtag_debug, 0x80); + flush_icache_range((unsigned long)base, (unsigned long)base + 0x80); +} + +extern struct plat_smp_ops msmtc_smp_ops; + +void __init prom_init(void) +{ + prom_argc = fw_arg0; + _prom_argv = (int *) fw_arg1; + _prom_envp = (int *) fw_arg2; + + mips_display_message("LINUX"); + + mips_revision_corid = MIPS_REVISION_CORID; + mips_revision_sconid = MIPS_REVISION_SCONID; + if (mips_revision_sconid == MIPS_REVISION_SCON_OTHER) { + switch (mips_revision_corid) { + case MIPS_REVISION_CORID_QED_RM5261: + case MIPS_REVISION_CORID_CORE_LV: + case MIPS_REVISION_CORID_CORE_FPGA: + case MIPS_REVISION_CORID_CORE_FPGAR2: + mips_revision_sconid = MIPS_REVISION_SCON_GT64120; + break; + case MIPS_REVISION_CORID_CORE_EMUL_BON: + case MIPS_REVISION_CORID_BONITO64: + case MIPS_REVISION_CORID_CORE_20K: + mips_revision_sconid = MIPS_REVISION_SCON_BONITO; + break; + case MIPS_REVISION_CORID_CORE_MSC: + case MIPS_REVISION_CORID_CORE_FPGA2: + case MIPS_REVISION_CORID_CORE_24K: + /* + * SOCit/ROCit support is essentially identical + * but make an attempt to distinguish them + */ + mips_revision_sconid = MIPS_REVISION_SCON_SOCIT; + break; + case MIPS_REVISION_CORID_CORE_FPGA3: + case MIPS_REVISION_CORID_CORE_FPGA4: + case MIPS_REVISION_CORID_CORE_FPGA5: + case MIPS_REVISION_CORID_CORE_EMUL_MSC: + default: + /* See above */ + mips_revision_sconid = MIPS_REVISION_SCON_ROCIT; + break; + } + } + + board_nmi_handler_setup = mips_nmi_setup; + board_ejtag_handler_setup = mips_ejtag_setup; + + pr_info("\nLINUX started...\n"); + prom_init_cmdline(); + prom_meminit(); +#ifdef CONFIG_SERIAL_8250_CONSOLE + console_config(); +#endif +#ifdef CONFIG_MIPS_CMP + register_smp_ops(&cmp_smp_ops); +#endif +#ifdef CONFIG_MIPS_MT_SMP + register_smp_ops(&vsmp_smp_ops); +#endif +#ifdef CONFIG_MIPS_MT_SMTC + register_smp_ops(&msmtc_smp_ops); +#endif +} diff --git a/arch/mips/mti-sead3/sead3-int.c b/arch/mips/mti-sead3/sead3-int.c new file mode 100644 index 0000000..4cd569e --- /dev/null +++ b/arch/mips/mti-sead3/sead3-int.c @@ -0,0 +1,146 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 2000, 2001, 2004 MIPS Technologies, Inc. + * Copyright (C) 2001 Ralf Baechle + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Routines for generic manipulation of the interrupts found on the MIPS + * Malta board. + * The interrupt controller is located in the South Bridge a PIIX4 device + * with two internal 82C95 interrupt controllers. + */ +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/kernel_stat.h> +#include <linux/kernel.h> +#include <linux/random.h> + +#include <asm/setup.h> +#include <asm/traps.h> +#include <asm/irq_cpu.h> +#include <asm/irq_regs.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/sead3int.h> +#include <asm/gic.h> + +#define SEAD_CONFIG_GIC_PRESENT_SHF (1) +#define SEAD_CONFIG_GIC_PRESENT_MSK (1 << SEAD_CONFIG_GIC_PRESENT_SHF) +#define SEAD_CONFIG_BASE (0x1B100110) +#define SEAD_CONFIG_SIZE (4) + +int gic_present; /* global var => auto initialized to 0 */ +static unsigned long sead3_config_reg; + +/* + * This table defines the setup for each external GIC interrupt + * It is indexed by interrupt number + */ +#define GIC_CPU_NMI GIC_MAP_TO_NMI_MSK +static struct gic_intr_map gic_intr_map[GIC_NUM_INTRS] = { + { 0, GIC_CPU_INT4, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT3, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT2, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT1, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { 0, GIC_CPU_INT0, GIC_POL_POS, GIC_TRIG_LEVEL, GIC_FLAG_TRANSPARENT }, + { X, X, X, X, 0 }, + { X, X, X, X, 0 }, + { X, X, X, X, 0 }, + { X, X, X, X, 0 }, + { X, X, X, X, 0 }, + { X, X, X, X, 0 }, + { X, X, X, X, 0 }, + /* The remainder of this table is initialised by fill_ipi_map */ +}; + +/* + * Version of ffs that only looks at bits 8..15 + */ +static inline unsigned int irq_ffs(unsigned int pending) +{ +#if defined(CONFIG_CPU_MIPS32) || defined(CONFIG_CPU_MIPS64) + return fls(pending) - CAUSEB_IP - 1; +#else + unsigned int a0 = 7; + unsigned int t0; + + t0 = pending & 0xf000; + t0 = t0 < 1; + t0 = t0 << 2; + a0 = a0 - t0; + pending = pending << t0; + + t0 = pending & 0xc000; + t0 = t0 < 1; + t0 = t0 << 1; + a0 = a0 - t0; + pending = pending << t0; + + t0 = pending & 0x8000; + t0 = t0 < 1; + /* t0 = t0 << 2; */ + a0 = a0 - t0; + /* pending = pending << t0; */ + + return a0; +#endif +} + +asmlinkage void plat_irq_dispatch(void) +{ + unsigned int pending = read_c0_cause() & read_c0_status() & ST0_IM; + int irq; + + irq = irq_ffs(pending); + + if (irq >= 0) + do_IRQ(MIPS_CPU_IRQ_BASE + irq); + else + spurious_interrupt(); +} + +void __init arch_init_irq(void) +{ + int i; + + if (!cpu_has_veic) { + mips_cpu_irq_init(); + + if (cpu_has_vint) { + /* install generic handler */ + for (i = 0; i < 8; i++) + set_vi_handler(i, plat_irq_dispatch); + } + } + + sead3_config_reg = (unsigned long)ioremap_nocache(SEAD_CONFIG_BASE, SEAD_CONFIG_SIZE); + gic_present = (REG32(sead3_config_reg) & SEAD_CONFIG_GIC_PRESENT_MSK) >> + SEAD_CONFIG_GIC_PRESENT_SHF; + printk("GIC: %spresent\n", (gic_present) ? "" : "not "); + printk("EIC: %s\n", (current_cpu_data.options & MIPS_CPU_VEIC) ? "on" : "off"); + + if (gic_present) { + gic_init(GIC_BASE_ADDR, GIC_ADDRSPACE_SZ, gic_intr_map, + ARRAY_SIZE(gic_intr_map), MIPS_GIC_IRQ_BASE); + } +} + diff --git a/arch/mips/mti-sead3/sead3-lcd.c b/arch/mips/mti-sead3/sead3-lcd.c new file mode 100644 index 0000000..654b447 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-lcd.c @@ -0,0 +1,55 @@ +/* + * Registration of Sead3 LCD platform device. + * + * Copyright (C) 2008 Yoichi Yuasa <yoichi_yuasa@xxxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ +#include <linux/errno.h> +#include <linux/init.h> +#include <linux/ioport.h> +#include <linux/platform_device.h> + +static struct resource sead3_lcd_resource __initdata = { + .start = 0x1f000400, + .end = 0x1f00041f, + .flags = IORESOURCE_MEM, +}; + +static __init int sead3_lcd_add(void) +{ + struct platform_device *pdev; + int retval; + + pdev = platform_device_alloc("cobalt-lcd", -1); + if (!pdev) + return -ENOMEM; + + retval = platform_device_add_resources(pdev, &sead3_lcd_resource, 1); + if (retval) + goto err_free_device; + + retval = platform_device_add(pdev); + if (retval) + goto err_free_device; + + return 0; + +err_free_device: + platform_device_put(pdev); + + return retval; +} +device_initcall(sead3_lcd_add); diff --git a/arch/mips/mti-sead3/sead3-leds.c b/arch/mips/mti-sead3/sead3-leds.c new file mode 100644 index 0000000..ff003d2 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-leds.c @@ -0,0 +1,91 @@ +/* + * 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) 2009 MIPS Technologies, Inc. + * written by Chris Dearman (chris@xxxxxxxx) + * + * Probe driver for the SEAD3 LED devices + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/leds.h> +#include <irq.h> + + +#define LEDFLAGS(bits, shift) \ + ((bits << 8) | (shift << 8)) + +#define LEDBITS(id, shift, bits) \ + .name = id #shift, \ + .flags = LEDFLAGS(bits, shift) + +struct led_info led_data_info[] = { + { LEDBITS("bit", 0, 1) }, + { LEDBITS("bit", 1, 1) }, + { LEDBITS("bit", 2, 1) }, + { LEDBITS("bit", 3, 1) }, + { LEDBITS("bit", 4, 1) }, + { LEDBITS("bit", 5, 1) }, + { LEDBITS("bit", 6, 1) }, + { LEDBITS("bit", 7, 1) }, + { LEDBITS("all", 0, 8) }, +}; + +static struct led_platform_data led_data = { + .num_leds = ARRAY_SIZE(led_data_info), + .leds = led_data_info +}; + +static struct resource pled_resources[] = { + { + .start = 0x1F000210, + .end = 0x1F000217, + .flags = IORESOURCE_MEM + } +}; + +static struct platform_device pled_device = { + .name = "sead3::pled", + .id = 0, + .dev = { + .platform_data = &led_data, + }, + .num_resources = ARRAY_SIZE(pled_resources), + .resource = pled_resources +}; + + +static struct resource fled_resources[] = { + { + .start = 0x1F000218, + .end = 0x1F00021f, + .flags = IORESOURCE_MEM + } +}; + +static struct platform_device fled_device = { + .name = "sead3::fled", + .id = 0, + .dev = { + .platform_data = &led_data, + }, + .num_resources = ARRAY_SIZE(fled_resources), + .resource = fled_resources +}; + + +static int __init led_init(void) +{ + platform_device_register(&pled_device); + return platform_device_register(&fled_device); +} + +module_init(led_init); + +MODULE_AUTHOR("Chris Dearman <chris@xxxxxxxx>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("LED probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-memory.c b/arch/mips/mti-sead3/sead3-memory.c new file mode 100644 index 0000000..b27419c --- /dev/null +++ b/arch/mips/mti-sead3/sead3-memory.c @@ -0,0 +1,178 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * PROM library functions for acquiring/using memory descriptors given to + * us from the YAMON. + */ +#include <linux/init.h> +#include <linux/mm.h> +#include <linux/bootmem.h> +#include <linux/pfn.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> +#include <asm/page.h> +#include <asm/sections.h> + +#include <asm/mips-boards/prom.h> + +/*#define DEBUG*/ + +enum yamon_memtypes { + yamon_dontuse, + yamon_prom, + yamon_free, +}; +static struct prom_pmemblock mdesc[PROM_MAX_PMEMBLOCKS]; + +#ifdef DEBUG +static char *mtypes[3] = { + "Dont use memory", + "YAMON PROM memory", + "Free memmory", +}; +#endif + +/* determined physical memory size, not overridden by command line args */ +unsigned long physical_memsize = 0L; + +static struct prom_pmemblock * __init prom_getmdesc(void) +{ + char *memsize_str; + unsigned int memsize; + char *ptr; + static char cmdline[COMMAND_LINE_SIZE] __initdata; + + /* otherwise look in the environment */ + memsize_str = prom_getenv("memsize"); + if (!memsize_str) { + printk(KERN_WARNING + "memsize not set in boot prom, set to default (32Mb)\n"); + physical_memsize = 0x02000000; + } else { +#ifdef DEBUG + pr_debug("prom_memsize = %s\n", memsize_str); +#endif + physical_memsize = simple_strtol(memsize_str, NULL, 0); + } + +#ifdef CONFIG_CPU_BIG_ENDIAN + /* SOC-it swaps, or perhaps doesn't swap, when DMA'ing the last + word of physical memory */ + physical_memsize -= PAGE_SIZE; +#endif + + /* Check the command line for a memsize directive that overrides + the physical/default amount */ + strcpy(cmdline, arcs_cmdline); + ptr = strstr(cmdline, "memsize="); + if (ptr && (ptr != cmdline) && (*(ptr - 1) != ' ')) + ptr = strstr(ptr, " memsize="); + + if (ptr) + memsize = memparse(ptr + 8, &ptr); + else + memsize = physical_memsize; + + memset(mdesc, 0, sizeof(mdesc)); + + mdesc[0].type = yamon_dontuse; + mdesc[0].base = 0x00000000; + mdesc[0].size = 0x00001000; + + mdesc[1].type = yamon_prom; + mdesc[1].base = 0x00001000; + mdesc[1].size = 0x000ef000; + + /* + * The area 0x000f0000-0x000fffff is allocated for BIOS memory by the + * south bridge and PCI access always forwarded to the ISA Bus and + * BIOSCS# is always generated. + * This mean that this area can't be used as DMA memory for PCI + * devices. + */ + mdesc[2].type = yamon_dontuse; + mdesc[2].base = 0x000f0000; + mdesc[2].size = 0x00010000; + + mdesc[3].type = yamon_dontuse; + mdesc[3].base = 0x00100000; + mdesc[3].size = CPHYSADDR(PFN_ALIGN((unsigned long)&_end)) - mdesc[3].base; + + mdesc[4].type = yamon_free; + mdesc[4].base = CPHYSADDR(PFN_ALIGN(&_end)); + mdesc[4].size = memsize - mdesc[4].base; + + return &mdesc[0]; +} + +static int __init prom_memtype_classify(unsigned int type) +{ + switch (type) { + case yamon_free: + return BOOT_MEM_RAM; + case yamon_prom: + return BOOT_MEM_ROM_DATA; + default: + return BOOT_MEM_RESERVED; + } +} + +void __init prom_meminit(void) +{ + struct prom_pmemblock *p; + +#ifdef DEBUG + pr_debug("YAMON MEMORY DESCRIPTOR dump:\n"); + p = prom_getmdesc(); + while (p->size) { + int i = 0; + pr_debug("[%d,%p]: base<%08lx> size<%08lx> type<%s>\n", + i, p, p->base, p->size, mtypes[p->type]); + p++; + i++; + } +#endif + p = prom_getmdesc(); + + while (p->size) { + long type; + unsigned long base, size; + + type = prom_memtype_classify(p->type); + base = p->base; + size = p->size; + + add_memory_region(base, size, type); + p++; + } +} + +void __init prom_free_prom_memory(void) +{ + unsigned long addr; + int i; + + for (i = 0; i < boot_mem_map.nr_map; i++) { + if (boot_mem_map.map[i].type != BOOT_MEM_ROM_DATA) + continue; + + addr = boot_mem_map.map[i].addr; + free_init_pages("prom memory", + addr, addr + boot_mem_map.map[i].size); + } +} diff --git a/arch/mips/mti-sead3/sead3-mtd.c b/arch/mips/mti-sead3/sead3-mtd.c new file mode 100644 index 0000000..30450b4 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-mtd.c @@ -0,0 +1,58 @@ +/* + * 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 MIPS Technologies, Inc. + * written by Ralf Baechle <ralf@xxxxxxxxxxxxxx> + */ + +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/mtd/partitions.h> +#include <linux/mtd/physmap.h> +#include <mtd/mtd-abi.h> + +static struct mtd_partition sead3_mtd_partitions[] = { + { + .name = "User FS", + .offset = 0x00000000, + .size = 0x01fc0000, + }, { + .name = "Board Config", + .offset = 0x01fc0000, + .size = 0x00040000, + .mask_flags = MTD_WRITEABLE + }, +}; + +static struct physmap_flash_data sead3_flash_data = { + .width = 4, + .nr_parts = ARRAY_SIZE(sead3_mtd_partitions), + .parts = sead3_mtd_partitions +}; + +static struct resource sead3_flash_resource = { + .start = 0x1c000000, + .end = 0x1dffffff, + .flags = IORESOURCE_MEM +}; + +static struct platform_device sead3_flash = { + .name = "physmap-flash", + .id = 0, + .dev = { + .platform_data = &sead3_flash_data, + }, + .num_resources = 1, + .resource = &sead3_flash_resource, +}; + +static int __init sead3_mtd_init(void) +{ + platform_device_register(&sead3_flash); + + return 0; +} + +module_init(sead3_mtd_init) diff --git a/arch/mips/mti-sead3/sead3-net.c b/arch/mips/mti-sead3/sead3-net.c new file mode 100644 index 0000000..1a5018d --- /dev/null +++ b/arch/mips/mti-sead3/sead3-net.c @@ -0,0 +1,56 @@ +/* + * 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) 2007-2011 MIPS Technologies, Inc. + * written by Ralf Baechle (ralf@xxxxxxxxxxxxxx) + * + * Probe driver for the SEAD3 network device + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/smsc911x.h> +#include <irq.h> + +static struct smsc911x_platform_config net_data = { + .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, + .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL, + .flags = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS, + .phy_interface = PHY_INTERFACE_MODE_MII, +}; + +struct resource net_resources[] = { + { + .start = 0x1f010000, + .end = 0x1f01ffff, + .flags = IORESOURCE_MEM + }, + { + .start = MIPS_CPU_IRQ_BASE + 6, + .flags = IORESOURCE_IRQ + } +}; + +static struct platform_device net_device = { + .name = "smsc911x", + .id = 0, + .dev = { + .platform_data = &net_data, + }, + .num_resources = ARRAY_SIZE(net_resources), + .resource = net_resources +}; + +static int __init net_init(void) +{ + return platform_device_register(&net_device); +} + +module_init(net_init); + +MODULE_AUTHOR("Chris Dearman <chris@xxxxxxxx>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Network probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-pic32-bus.c b/arch/mips/mti-sead3/sead3-pic32-bus.c new file mode 100644 index 0000000..b0bb326 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-pic32-bus.c @@ -0,0 +1,112 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/spinlock.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/errno.h> + +#define PIC32_NULL 0x00 +#define PIC32_RD 0x01 +#define PIC32_SYSRD 0x02 +#define PIC32_WR 0x10 +#define PIC32_SYSWR 0x20 +#define PIC32_IRQ_CLR 0x40 +#define PIC32_STATUS 0x80 + +#define DELAY() udelay(100) /* FIXME: needed? */ + +/* spinlock to ensure atomic access to PIC32 */ +static DEFINE_SPINLOCK(pic32_bus_lock); + +/* FIXME: io_remap these */ +static void __iomem *bus_xfer = (void __iomem *)0xbf000600; +static void __iomem *bus_status = (void __iomem *)0xbf000060; + +static inline unsigned int ioready(void) +{ + return readl(bus_status) & 1; +} + +static inline void wait_ioready(void) +{ + do { } while (!ioready()); +} + +static inline void wait_ioclear(void) +{ + do { } while (ioready()); +} + +static inline void check_ioclear(void) +{ + if (ioready()) { + pr_debug("ioclear: initially busy\n"); + do { + (void) readl(bus_xfer); + DELAY(); + } while (ioready()); + pr_debug("ioclear: cleared busy\n"); + } +} + +u32 pic32_bus_readl(u32 reg) +{ + unsigned long flags; + u32 status, val; + + spin_lock_irqsave(&pic32_bus_lock, flags); + + check_ioclear(); + + writel((PIC32_RD << 24) | (reg & 0x00ffffff), bus_xfer); + DELAY(); + wait_ioready(); + status = readl(bus_xfer); + DELAY(); + val = readl(bus_xfer); + wait_ioclear(); + + pr_debug("pic32_bus_readl: *%x -> %x (status=%x)\n", reg, val, status); + + spin_unlock_irqrestore(&pic32_bus_lock, flags); + + return val; +} + +void pic32_bus_writel(u32 val, u32 reg) +{ + unsigned long flags; + u32 status; + + spin_lock_irqsave(&pic32_bus_lock, flags); + + check_ioclear(); + + writel((PIC32_WR << 24) | (reg & 0x00ffffff), bus_xfer); + DELAY(); + writel(val, bus_xfer); + DELAY(); + wait_ioready(); + status = readl(bus_xfer); + wait_ioclear(); + + pr_debug("pic32_bus_writel: *%x <- %x (status=%x)\n", reg, val, status); + + spin_unlock_irqrestore(&pic32_bus_lock, flags); +} diff --git a/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c new file mode 100644 index 0000000..053b23e --- /dev/null +++ b/arch/mips/mti-sead3/sead3-pic32-i2c-drv.c @@ -0,0 +1,441 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/spinlock.h> +#include <linux/platform_device.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/i2c.h> +#include <linux/slab.h> + +#define PIC32_I2CxCON 0x0000 +#define PIC32_I2CxCONCLR 0x0004 +#define PIC32_I2CxCONSET 0x0008 +#define PIC32_I2CxCONINV 0x000C +#define I2CCON_ON (1<<15) +#define I2CCON_FRZ (1<<14) +#define I2CCON_SIDL (1<<13) +#define I2CCON_SCLREL (1<<12) +#define I2CCON_STRICT (1<<11) +#define I2CCON_A10M (1<<10) +#define I2CCON_DISSLW (1<<9) +#define I2CCON_SMEN (1<<8) +#define I2CCON_GCEN (1<<7) +#define I2CCON_STREN (1<<6) +#define I2CCON_ACKDT (1<<5) +#define I2CCON_ACKEN (1<<4) +#define I2CCON_RCEN (1<<3) +#define I2CCON_PEN (1<<2) +#define I2CCON_RSEN (1<<1) +#define I2CCON_SEN (1<<0) + +#define PIC32_I2CxSTAT 0x0010 +#define PIC32_I2CxSTATCLR 0x0014 +#define PIC32_I2CxSTATSET 0x0018 +#define PIC32_I2CxSTATINV 0x001C +#define I2CSTAT_ACKSTAT (1<<15) +#define I2CSTAT_TRSTAT (1<<14) +#define I2CSTAT_BCL (1<<10) +#define I2CSTAT_GCSTAT (1<<9) +#define I2CSTAT_ADD10 (1<<8) +#define I2CSTAT_IWCOL (1<<7) +#define I2CSTAT_I2COV (1<<6) +#define I2CSTAT_DA (1<<5) +#define I2CSTAT_P (1<<4) +#define I2CSTAT_S (1<<3) +#define I2CSTAT_RW (1<<2) +#define I2CSTAT_RBF (1<<1) +#define I2CSTAT_TBF (1<<0) + +#define PIC32_I2CxADD 0x0020 +#define PIC32_I2CxADDCLR 0x0024 +#define PIC32_I2CxADDSET 0x0028 +#define PIC32_I2CxADDINV 0x002C +#define PIC32_I2CxMSK 0x0030 +#define PIC32_I2CxMSKCLR 0x0034 +#define PIC32_I2CxMSKSET 0x0038 +#define PIC32_I2CxMSKINV 0x003C +#define PIC32_I2CxBRG 0x0040 +#define PIC32_I2CxBRGCLR 0x0044 +#define PIC32_I2CxBRGSET 0x0048 +#define PIC32_I2CxBRGINV 0x004C +#define PIC32_I2CxTRN 0x0050 +#define PIC32_I2CxTRNCLR 0x0054 +#define PIC32_I2CxTRNSET 0x0058 +#define PIC32_I2CxTRNINV 0x005C +#define PIC32_I2CxRCV 0x0060 + +struct i2c_platform_data { + u32 base; + struct i2c_adapter adap; + u32 xfer_timeout; + u32 ack_timeout; + u32 ctl_timeout; +}; + +extern u32 pic32_bus_readl(u32 reg); +extern void pic32_bus_writel(u32 val, u32 reg); + +static inline void +StartI2C(struct i2c_platform_data *adap) +{ + pr_debug("StartI2C\n"); + pic32_bus_writel(I2CCON_SEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void +StopI2C(struct i2c_platform_data *adap) +{ + pr_debug("StopI2C\n"); + pic32_bus_writel(I2CCON_PEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void +AckI2C(struct i2c_platform_data *adap) +{ + pr_debug("AckI2C\n"); + pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONCLR); + pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); +} + +static inline void +NotAckI2C(struct i2c_platform_data *adap) +{ + pr_debug("NakI2C\n"); + pic32_bus_writel(I2CCON_ACKDT, adap->base + PIC32_I2CxCONSET); + pic32_bus_writel(I2CCON_ACKEN, adap->base + PIC32_I2CxCONSET); +} + +static inline int +IdleI2C(struct i2c_platform_data *adap) +{ + int i; + + pr_debug("IdleI2C\n"); + for (i = 0; i < adap->ctl_timeout; i++) { + if (((pic32_bus_readl(adap->base + PIC32_I2CxCON) & + (I2CCON_ACKEN|I2CCON_RCEN|I2CCON_PEN|I2CCON_RSEN|I2CCON_SEN)) == 0) && + ((pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & + (I2CSTAT_TRSTAT)) == 0)) + return 0; + udelay(1); + } + return -ETIMEDOUT; +} + +static inline u32 +MasterWriteI2C(struct i2c_platform_data *adap, u32 byte) +{ + pr_debug("MasterWriteI2C\n"); + + pic32_bus_writel(byte, adap->base + PIC32_I2CxTRN); + + return pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_IWCOL; +} + +static inline u32 +MasterReadI2C(struct i2c_platform_data *adap) +{ + pr_debug("MasterReadI2C\n"); + + pic32_bus_writel(I2CCON_RCEN, adap->base + PIC32_I2CxCONSET); + + while (pic32_bus_readl(adap->base + PIC32_I2CxCON) & I2CCON_RCEN) + ; + + pic32_bus_writel(I2CSTAT_I2COV, adap->base + PIC32_I2CxSTATCLR); + + return pic32_bus_readl(adap->base + PIC32_I2CxRCV); +} + +static int +do_address(struct i2c_platform_data *adap, unsigned int addr, int rd) +{ + pr_debug("doaddress\n"); + + IdleI2C(adap); + StartI2C(adap); + IdleI2C(adap); + + addr <<= 1; + if (rd) + addr |= 1; + + if (MasterWriteI2C(adap, addr)) + return -EIO; + IdleI2C(adap); + if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_ACKSTAT) + return -EIO; + return 0; +} + +static int +i2c_read(struct i2c_platform_data *adap, unsigned char *buf, + unsigned int len) +{ + int i; + u32 data; + + pr_debug("i2c_read\n"); + + i = 0; + while (i < len) { + data = MasterReadI2C(adap); + buf[i++] = data; + if (i < len) + AckI2C(adap); + else + NotAckI2C(adap); + } + + StopI2C(adap); + IdleI2C(adap); + return 0; +} + +static int +i2c_write(struct i2c_platform_data *adap, unsigned char *buf, + unsigned int len) +{ + int i; + u32 data; + + pr_debug("i2c_write\n"); + + i = 0; + while (i < len) { + data = buf[i]; + if (MasterWriteI2C(adap, data)) + return -EIO; + IdleI2C(adap); + if (pic32_bus_readl(adap->base + PIC32_I2CxSTAT) & I2CSTAT_ACKSTAT) + return -EIO; + i++; + } + + StopI2C(adap); + IdleI2C(adap); + return 0; +} + +static int +platform_xfer(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs, int num) +{ + struct i2c_platform_data *adap = i2c_adap->algo_data; + struct i2c_msg *p; + int i, err = 0; + + pr_debug("platform_xfer\n"); + for (i = 0; i < num; i++) { +#define __BUFSIZE 80 + int ii; + static char buf[__BUFSIZE]; + char *b = buf; + + p = &msgs[i]; + b += sprintf(buf, " [%d bytes]", p->len); + if ((p->flags & I2C_M_RD) == 0) { + for (ii = 0; ii < p->len; ii++) { + if (b < &buf[__BUFSIZE-4]) { + b += sprintf(b, " %02x", p->buf[ii]); + } else { + strcat(b, "..."); + break; + } + } + } + pr_debug("xfer%d: DevAddr: %04x Op:%s Data:%s\n", i, p->addr, + (p->flags & I2C_M_RD) ? "Rd" : "Wr", buf); + } + + + for (i = 0; !err && i < num; i++) { + p = &msgs[i]; + err = do_address(adap, p->addr, p->flags & I2C_M_RD); + if (err || !p->len) + continue; + if (p->flags & I2C_M_RD) + err = i2c_read(adap, p->buf, p->len); + else + err = i2c_write(adap, p->buf, p->len); + } + + /* Return the number of messages processed, or the error code. */ + if (err == 0) + err = num; + + return err; +} + +static u32 +platform_func(struct i2c_adapter *adap) +{ + pr_debug("platform_algo\n"); + return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; +} + +static const struct i2c_algorithm platform_algo = { + .master_xfer = platform_xfer, + .functionality = platform_func, +}; + +static void i2c_platform_setup(struct i2c_platform_data *priv) +{ + pr_debug("i2c_platform_setup\n"); + + pic32_bus_writel(500, priv->base + PIC32_I2CxBRG); + pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONCLR); + pic32_bus_writel(I2CCON_ON, priv->base + PIC32_I2CxCONSET); + pic32_bus_writel(I2CSTAT_BCL|I2CSTAT_IWCOL, priv->base + PIC32_I2CxSTATCLR); +} + +static void i2c_platform_disable(struct i2c_platform_data *priv) +{ + pr_debug("i2c_platform_disable\n"); +} + +static int __devinit +i2c_platform_probe(struct platform_device *pdev) +{ + struct i2c_platform_data *priv; + struct resource *r; + int ret; + + pr_debug("i2c_platform_probe\n"); + r = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!r) { + ret = -ENODEV; + goto out; + } + + priv = kzalloc(sizeof(struct i2c_platform_data), GFP_KERNEL); + if (!priv) { + ret = -ENOMEM; + goto out; + } + + /* FIXME: need to allocate resource in PIC32 space */ +#if 0 + priv->base = bus_request_region(r->start, resource_size(r), + pdev->name); +#else + priv->base = r->start; +#endif + if (!priv->base) { + ret = -EBUSY; + goto out_mem; + } + + priv->xfer_timeout = 200; + priv->ack_timeout = 200; + priv->ctl_timeout = 200; + + priv->adap.nr = pdev->id; + priv->adap.algo = &platform_algo; + priv->adap.algo_data = priv; + priv->adap.dev.parent = &pdev->dev; + strlcpy(priv->adap.name, "PIC32 I2C", sizeof(priv->adap.name)); + + i2c_platform_setup(priv); + + ret = i2c_add_numbered_adapter(&priv->adap); + if (ret == 0) { + platform_set_drvdata(pdev, priv); + return 0; + } + + i2c_platform_disable(priv); + +out_mem: + kfree(priv); +out: + return ret; +} + +static int __devexit +i2c_platform_remove(struct platform_device *pdev) +{ + struct i2c_platform_data *priv = platform_get_drvdata(pdev); + + pr_debug("i2c_platform_remove\n"); + platform_set_drvdata(pdev, NULL); + i2c_del_adapter(&priv->adap); + i2c_platform_disable(priv); + kfree(priv); + return 0; +} + +#ifdef CONFIG_PM +static int +i2c_platform_suspend(struct platform_device *pdev, pm_message_t state) +{ + struct i2c_platform_data *priv = platform_get_drvdata(pdev); + + dev_dbg(&pdev->dev, "i2c_platform_disable\n"); + i2c_platform_disable(priv); + + return 0; +} + +static int +i2c_platform_resume(struct platform_device *pdev) +{ + struct i2c_platform_data *priv = platform_get_drvdata(pdev); + + dev_dbg(&pdev->dev, "i2c_platform_setup\n"); + i2c_platform_setup(priv); + + return 0; +} +#else +#define i2c_platform_suspend NULL +#define i2c_platform_resume NULL +#endif + +static struct platform_driver i2c_platform_driver = { + .driver = { + .name = "i2c_pic32", + .owner = THIS_MODULE, + }, + .probe = i2c_platform_probe, + .remove = __devexit_p(i2c_platform_remove), + .suspend = i2c_platform_suspend, + .resume = i2c_platform_resume, +}; + +static int __init +i2c_platform_init(void) +{ + pr_debug("i2c_platform_init\n"); + return platform_driver_register(&i2c_platform_driver); +} + +static void __exit +i2c_platform_exit(void) +{ + pr_debug("i2c_platform_exit\n"); + platform_driver_unregister(&i2c_platform_driver); +} + +MODULE_AUTHOR("Chris Dearman, MIPS Technologies INC."); +MODULE_DESCRIPTION("PIC32 I2C driver"); +MODULE_LICENSE("GPL"); + +module_init(i2c_platform_init); +module_exit(i2c_platform_exit); diff --git a/arch/mips/mti-sead3/sead3-platform.c b/arch/mips/mti-sead3/sead3-platform.c new file mode 100644 index 0000000..ddd28f6 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-platform.c @@ -0,0 +1,49 @@ +/* + * 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) 2007 MIPS Technologies, Inc. + * written by Ralf Baechle (ralf@xxxxxxxxxxxxxx) + * + * Probe driver for the SEAD3 UART ports + * + */ +#include <linux/module.h> +#include <linux/init.h> +#include <linux/serial_8250.h> + +#define UART(base, int) \ +{ \ + .mapbase = base, \ + .irq = int, \ + .uartclk = 14745600, \ + .iotype = UPIO_MEM32, \ + .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_IOREMAP, \ + .regshift = 2, \ +} + +static struct plat_serial8250_port uart8250_data[] = { + UART(0x1f000900, MIPS_CPU_IRQ_BASE + 4), /* ttyS0 = USB */ + UART(0x1f000800, MIPS_CPU_IRQ_BASE + 4), /* ttyS1 = RS232 */ + { }, +}; + +static struct platform_device uart8250_device = { + .name = "serial8250", + .id = PLAT8250_DEV_PLATFORM2, + .dev = { + .platform_data = uart8250_data, + }, +}; + +static int __init uart8250_init(void) +{ + return platform_device_register(&uart8250_device); +} + +module_init(uart8250_init); + +MODULE_AUTHOR("Chris Dearman <chris@xxxxxxxx>"); +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("8250 UART probe driver for SEAD3"); diff --git a/arch/mips/mti-sead3/sead3-reset.c b/arch/mips/mti-sead3/sead3-reset.c new file mode 100644 index 0000000..4aec9f9 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-reset.c @@ -0,0 +1,64 @@ +#define DEBUG +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * ######################################################################## + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * ######################################################################## + * + * Reset the MIPS boards. + * + */ +#include <linux/init.h> +#include <linux/pm.h> + +#include <asm/io.h> +#include <asm/reboot.h> + +#define SOFTRES_REG 0x1F000050 +#define GORESET 0x4D + +static void mips_machine_restart(char *command); +static void mips_machine_halt(void); + +static void mips_machine_restart(char *command) +{ + unsigned int __iomem *softres_reg = + ioremap(SOFTRES_REG, sizeof(unsigned int)); + + __raw_writel(GORESET, softres_reg); +} + +static void mips_machine_halt(void) +{ + unsigned int __iomem *softres_reg = + ioremap(SOFTRES_REG, sizeof(unsigned int)); + + __raw_writel(GORESET, softres_reg); +} + + +static int __init mips_reboot_setup(void) +{ + _machine_restart = mips_machine_restart; + _machine_halt = mips_machine_halt; + pm_power_off = mips_machine_halt; + + return 0; +} + +arch_initcall(mips_reboot_setup); diff --git a/arch/mips/mti-sead3/sead3-setup.c b/arch/mips/mti-sead3/sead3-setup.c new file mode 100644 index 0000000..1ddd4c3 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-setup.c @@ -0,0 +1,49 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved. + * Copyright (C) 2008 Dmitri Vorobiev + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + */ +#include <linux/cpu.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/ioport.h> +#include <linux/irq.h> +#include <linux/pci.h> +#include <linux/screen_info.h> +#include <linux/time.h> + +#include <asm/bootinfo.h> +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> +#include <asm/traps.h> + +int coherentio; /* init to 0 => no DMA cache coherency (may be set by user) */ +int hw_coherentio; /* init to 0 => no HW DMA cache coherency (reflects real HW) */ + +const char *get_system_type(void) +{ + return "MIPS SEAD3"; +} + +#if defined(CONFIG_MIPS_MT_SMTC) +const char display_string[] = " SMTC LINUX ON SEAD3 "; +#else +const char display_string[] = " LINUX ON SEAD3 "; +#endif /* CONFIG_MIPS_MT_SMTC */ + +void __init plat_mem_setup(void) +{ +} diff --git a/arch/mips/mti-sead3/sead3-smtc.c b/arch/mips/mti-sead3/sead3-smtc.c new file mode 100644 index 0000000..192cfd2 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-smtc.c @@ -0,0 +1,162 @@ +/* + * Malta Platform-specific hooks for SMP operation + */ +#include <linux/irq.h> +#include <linux/init.h> + +#include <asm/mipsregs.h> +#include <asm/mipsmtregs.h> +#include <asm/smtc.h> +#include <asm/smtc_ipi.h> + +/* VPE/SMP Prototype implements platform interfaces directly */ + +/* + * Cause the specified action to be performed on a targeted "CPU" + */ + +static void msmtc_send_ipi_single(int cpu, unsigned int action) +{ + /* "CPU" may be TC of same VPE, VPE of same CPU, or different CPU */ + smtc_send_ipi(cpu, LINUX_SMP_IPI, action); +} + +static void msmtc_send_ipi_mask(const struct cpumask *mask, unsigned int action) +{ + unsigned int i; + + for_each_cpu(i, mask) + msmtc_send_ipi_single(i, action); +} + +/* + * Post-config but pre-boot cleanup entry point + */ +static void __cpuinit msmtc_init_secondary(void) +{ + void smtc_init_secondary(void); + int myvpe; + + /* Don't enable Malta I/O interrupts (IP2) for secondary VPEs */ + myvpe = read_c0_tcbind() & TCBIND_CURVPE; + if (myvpe != 0) { + /* Ideally, this should be done only once per VPE, but... */ + clear_c0_status(ST0_IM); + set_c0_status((0x100 << cp0_compare_irq) + | (0x100 << MIPS_CPU_IPI_IRQ)); + if (cp0_perfcount_irq >= 0) + set_c0_status(0x100 << cp0_perfcount_irq); + } + + smtc_init_secondary(); +} + +/* + * Platform "CPU" startup hook + */ +static void __cpuinit msmtc_boot_secondary(int cpu, struct task_struct *idle) +{ + smtc_boot_secondary(cpu, idle); +} + +/* + * SMP initialization finalization entry point + */ +static void __cpuinit msmtc_smp_finish(void) +{ + smtc_smp_finish(); +} + +/* + * Hook for after all CPUs are online + */ + +static void msmtc_cpus_done(void) +{ +} + +/* + * Platform SMP pre-initialization + * + * As noted above, we can assume a single CPU for now + * but it may be multithreaded. + */ + +static void __init msmtc_smp_setup(void) +{ + /* + * we won't get the definitive value until + * we've run smtc_prepare_cpus later, but + * we would appear to need an upper bound now. + */ + smp_num_siblings = smtc_build_cpu_map(0); +} + +static void __init msmtc_prepare_cpus(unsigned int max_cpus) +{ + smtc_prepare_cpus(max_cpus); +} + +struct plat_smp_ops msmtc_smp_ops = { + .send_ipi_single = msmtc_send_ipi_single, + .send_ipi_mask = msmtc_send_ipi_mask, + .init_secondary = msmtc_init_secondary, + .smp_finish = msmtc_smp_finish, + .cpus_done = msmtc_cpus_done, + .boot_secondary = msmtc_boot_secondary, + .smp_setup = msmtc_smp_setup, + .prepare_cpus = msmtc_prepare_cpus, +}; + +#ifdef CONFIG_MIPS_MT_SMTC_IRQAFF +/* + * IRQ affinity hook + */ + + +int plat_set_irq_affinity(unsigned int irq, const struct cpumask *affinity) +{ + cpumask_t tmask; + int cpu = 0; + void smtc_set_irq_affinity(unsigned int irq, cpumask_t aff); + + /* + * On the legacy Malta development board, all I/O interrupts + * are routed through the 8259 and combined in a single signal + * to the CPU daughterboard, and on the CoreFPGA2/3 34K models, + * that signal is brought to IP2 of both VPEs. To avoid racing + * concurrent interrupt service events, IP2 is enabled only on + * one VPE, by convention VPE0. So long as no bits are ever + * cleared in the affinity mask, there will never be any + * interrupt forwarding. But as soon as a program or operator + * sets affinity for one of the related IRQs, we need to make + * sure that we don't ever try to forward across the VPE boundry, + * at least not until we engineer a system where the interrupt + * _ack() or _end() function can somehow know that it corresponds + * to an interrupt taken on another VPE, and perform the appropriate + * restoration of Status.IM state using MFTR/MTTR instead of the + * normal local behavior. We also ensure that no attempt will + * be made to forward to an offline "CPU". + */ + + cpumask_copy(&tmask, affinity); + for_each_cpu(cpu, affinity) { + if ((cpu_data[cpu].vpe_id != 0) || !cpu_online(cpu)) + cpu_clear(cpu, tmask); + } + cpumask_copy(irq_desc[irq].affinity, &tmask); + + if (cpus_empty(tmask)) + /* + * We could restore a default mask here, but the + * runtime code can anyway deal with the null set + */ + printk(KERN_WARNING + "IRQ affinity leaves no legal CPU for IRQ %d\n", irq); + + /* Do any generic SMTC IRQ affinity setup */ + smtc_set_irq_affinity(irq, tmask); + + return 0; +} +#endif /* CONFIG_MIPS_MT_SMTC_IRQAFF */ diff --git a/arch/mips/mti-sead3/sead3-time.c b/arch/mips/mti-sead3/sead3-time.c new file mode 100644 index 0000000..a31dd35 --- /dev/null +++ b/arch/mips/mti-sead3/sead3-time.c @@ -0,0 +1,145 @@ +/* + * Carsten Langgaard, carstenl@xxxxxxxx + * Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved. + * + * This program is free software; you can distribute it and/or modify it + * under the terms of the GNU General Public License (Version 2) as + * published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Setting up the clock on the MIPS boards. + */ + +#include <linux/types.h> +#include <linux/init.h> +#include <linux/kernel_stat.h> +#include <linux/sched.h> +#include <linux/spinlock.h> +#include <linux/interrupt.h> +#include <linux/time.h> +#include <linux/timex.h> + +#include <asm/setup.h> +#include <asm/mipsregs.h> +#include <asm/mipsmtregs.h> +#include <asm/hardirq.h> +#include <asm/irq.h> +#include <asm/div64.h> +#include <asm/cpu.h> +#include <asm/time.h> +#include <asm/msc01_ic.h> + +#include <asm/mips-boards/generic.h> +#include <asm/mips-boards/prom.h> + +unsigned long cpu_khz; + +static int mips_cpu_timer_irq; +static int mips_cpu_perf_irq; +extern int cp0_perfcount_irq; + +static void mips_timer_dispatch(void) +{ + do_IRQ(mips_cpu_timer_irq); +} + +static void mips_perf_dispatch(void) +{ + do_IRQ(mips_cpu_perf_irq); +} + +static void __iomem *status_reg = (void __iomem *)0xbf000410; + +/* + * Estimate CPU frequency. Sets mips_hpt_frequency as a side-effect + */ +static unsigned int __init estimate_cpu_frequency(void) +{ + unsigned int prid = read_c0_prid() & 0xffff00; + unsigned int tick = 0; + unsigned int freq; + unsigned int orig; + unsigned long flags; + + local_irq_save(flags); + + orig = readl(status_reg) & 0x2; /* get original sample */ + /* wait for transition */ + while ((readl(status_reg) & 0x2) == orig) + ; + orig = orig ^ 0x2; /* flip the bit */ + + write_c0_count(0); + + /* wait 1 second (the sampling clock transitions every 10ms) */ + while (tick < 100) { + /* wait for transition */ + while ((readl(status_reg) & 0x2) == orig) + ; + orig = orig ^ 0x2; /* flip the bit */ + tick++; + } + + freq = read_c0_count(); + + local_irq_restore(flags); + + mips_hpt_frequency = freq; + + /* Adjust for processor */ + if ((prid != (PRID_COMP_MIPS | PRID_IMP_20KC)) && + (prid != (PRID_COMP_MIPS | PRID_IMP_25KF))) + freq *= 2; + + freq += 5000; /* rounding */ + freq -= freq%10000; + + return freq ; +} + +void read_persistent_clock(struct timespec *ts) +{ + ts->tv_sec = 0; /* FIXME - i2c is not up yet => can't access RTC */ + ts->tv_nsec = 0; +} + +static void __init plat_perf_setup(void) +{ + if (cp0_perfcount_irq >= 0) { + if (cpu_has_vint) + set_vi_handler(cp0_perfcount_irq, mips_perf_dispatch); + mips_cpu_perf_irq = MIPS_CPU_IRQ_BASE + cp0_perfcount_irq; + } +} + +unsigned int __cpuinit get_c0_compare_int(void) +{ + if (cpu_has_vint) + set_vi_handler(cp0_compare_irq, mips_timer_dispatch); + mips_cpu_timer_irq = MIPS_CPU_IRQ_BASE + cp0_compare_irq; + return mips_cpu_timer_irq; +} + +void __init plat_time_init(void) +{ + unsigned int est_freq; + + est_freq = estimate_cpu_frequency(); + + printk("CPU frequency %d.%02d MHz\n", est_freq/1000000, + (est_freq%1000000)*100/1000000); + + cpu_khz = est_freq / 1000; + + mips_scroll_message(); + + plat_perf_setup(); +} -- 1.7.9.6
