diff options
Diffstat (limited to 'arch/arm/mach-ks8695')
| -rw-r--r-- | arch/arm/mach-ks8695/Kconfig | 8 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/Makefile | 14 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/Makefile.boot | 8 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/cpu.c | 73 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/devices.c | 191 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/generic.h | 15 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/irq.c | 175 | ||||
| -rw-r--r-- | arch/arm/mach-ks8695/time.c | 114 |
8 files changed, 598 insertions, 0 deletions
diff --git a/arch/arm/mach-ks8695/Kconfig b/arch/arm/mach-ks8695/Kconfig new file mode 100644 index 000000000000..44d14aa0baa7 --- /dev/null +++ b/arch/arm/mach-ks8695/Kconfig @@ -0,0 +1,8 @@ +if ARCH_KS8695 + +menu "Kendin/Micrel KS8695 Implementations" + + +endmenu + +endif diff --git a/arch/arm/mach-ks8695/Makefile b/arch/arm/mach-ks8695/Makefile new file mode 100644 index 000000000000..0a0f496e8ccf --- /dev/null +++ b/arch/arm/mach-ks8695/Makefile @@ -0,0 +1,14 @@ +# arch/arm/mach-ks8695/Makefile +# +# Makefile for KS8695 architecture support +# + +obj-y := cpu.o irq.o time.o devices.o +obj-m := +obj-n := +obj- := + +# PCI support is optional +#obj-$(CONFIG_PCI) += pci.o + +# Board-specific support diff --git a/arch/arm/mach-ks8695/Makefile.boot b/arch/arm/mach-ks8695/Makefile.boot new file mode 100644 index 000000000000..48eb2cb3ac77 --- /dev/null +++ b/arch/arm/mach-ks8695/Makefile.boot @@ -0,0 +1,8 @@ +# Note: the following conditions must always be true: +# ZRELADDR == virt_to_phys(TEXTADDR) +# PARAMS_PHYS must be within 4MB of ZRELADDR +# INITRD_PHYS must be in RAM + + zreladdr-y := 0x00008000 +params_phys-y := 0x00000100 +initrd_phys-y := 0x00800000 diff --git a/arch/arm/mach-ks8695/cpu.c b/arch/arm/mach-ks8695/cpu.c new file mode 100644 index 000000000000..407d255e42bf --- /dev/null +++ b/arch/arm/mach-ks8695/cpu.c @@ -0,0 +1,73 @@ +/* + * arch/arm/mach-ks8695/cpu.c + * + * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> + * Copyright (C) 2006 Simtec Electronics + * + * KS8695 CPU support + * + * 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/kernel.h> +#include <linux/module.h> +#include <linux/init.h> + +#include <asm/hardware.h> +#include <asm/io.h> +#include <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <asm/arch/regs-sys.h> +#include <asm/arch/regs-misc.h> + + +static struct __initdata map_desc ks8695_io_desc[] = { + { + .virtual = KS8695_IO_VA, + .pfn = __phys_to_pfn(KS8695_IO_PA), + .length = KS8695_IO_SIZE, + .type = MT_DEVICE, + } +}; + +static void __init ks8695_processor_info(void) +{ + unsigned long id, rev; + + id = __raw_readl(KS8695_MISC_VA + KS8695_DID); + rev = __raw_readl(KS8695_MISC_VA + KS8695_RID); + + printk("KS8695 ID=%04lx SubID=%02lx Revision=%02lx\n", (id & DID_ID), (rev & RID_SUBID), (rev & RID_REVISION)); +} + +static unsigned int sysclk[8] = { 125000000, 100000000, 62500000, 50000000, 41700000, 33300000, 31300000, 25000000 }; +static unsigned int cpuclk[8] = { 166000000, 166000000, 83000000, 83000000, 55300000, 55300000, 41500000, 41500000 }; + +static void __init ks8695_clock_info(void) +{ + unsigned int scdc = __raw_readl(KS8695_SYS_VA + KS8695_CLKCON) & CLKCON_SCDC; + + printk("Clocks: System %u MHz, CPU %u MHz\n", + sysclk[scdc] / 1000000, cpuclk[scdc] / 1000000); +} + +void __init ks8695_map_io(void) +{ + iotable_init(ks8695_io_desc, ARRAY_SIZE(ks8695_io_desc)); + + ks8695_processor_info(); + ks8695_clock_info(); +} diff --git a/arch/arm/mach-ks8695/devices.c b/arch/arm/mach-ks8695/devices.c new file mode 100644 index 000000000000..386593f8ac65 --- /dev/null +++ b/arch/arm/mach-ks8695/devices.c @@ -0,0 +1,191 @@ +/* + * arch/arm/mach-ks8695/devices.c + * + * Copyright (C) 2006 Andrew Victor + * + * 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. + * + * 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 <asm/mach/arch.h> +#include <asm/mach/map.h> + +#include <linux/platform_device.h> + +#include <asm/arch/regs-wan.h> +#include <asm/arch/regs-lan.h> +#include <asm/arch/regs-hpna.h> + + +/* -------------------------------------------------------------------- + * Ethernet + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_ARM_KS8695_ETHER) || defined(CONFIG_ARM_KS8695_ETHER_MODULE) +static u64 eth_dmamask = 0xffffffffUL; + +static struct resource ks8695_wan_resources[] = { + [0] = { + .start = KS8695_WAN_VA, + .end = KS8695_WAN_VA + 0x00ff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "WAN RX", + .start = KS8695_IRQ_WAN_RX_STATUS, + .end = KS8695_IRQ_WAN_RX_STATUS, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .name = "WAN TX", + .start = KS8695_IRQ_WAN_TX_STATUS, + .end = KS8695_IRQ_WAN_TX_STATUS, + .flags = IORESOURCE_IRQ, + }, + [3] = { + .name = "WAN Link", + .start = KS8695_IRQ_WAN_LINK, + .end = KS8695_IRQ_WAN_LINK, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device ks8695_wan_device = { + .name = "ks8695_ether", + .id = 0, + .dev = { + .dma_mask = ð_dmamask, + .coherent_dma_mask = 0xffffffff, + }, + .resource = ks8695_wan_resources, + .num_resources = ARRAY_SIZE(ks8695_wan_resources), +}; + + +static struct resource ks8695_lan_resources[] = { + [0] = { + .start = KS8695_LAN_VA, + .end = KS8695_LAN_VA + 0x00ff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "LAN RX", + .start = KS8695_IRQ_LAN_RX_STATUS, + .end = KS8695_IRQ_LAN_RX_STATUS, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .name = "LAN TX", + .start = KS8695_IRQ_LAN_TX_STATUS, + .end = KS8695_IRQ_LAN_TX_STATUS, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device ks8695_lan_device = { + .name = "ks8695_ether", + .id = 1, + .dev = { + .dma_mask = ð_dmamask, + .coherent_dma_mask = 0xffffffff, + }, + .resource = ks8695_lan_resources, + .num_resources = ARRAY_SIZE(ks8695_lan_resources), +}; + + +static struct resource ks8695_hpna_resources[] = { + [0] = { + .start = KS8695_HPNA_VA, + .end = KS8695_HPNA_VA + 0x00ff, + .flags = IORESOURCE_MEM, + }, + [1] = { + .name = "HPNA RX", + .start = KS8695_IRQ_HPNA_RX_STATUS, + .end = KS8695_IRQ_HPNA_RX_STATUS, + .flags = IORESOURCE_IRQ, + }, + [2] = { + .name = "HPNA TX", + .start = KS8695_IRQ_HPNA_TX_STATUS, + .end = KS8695_IRQ_HPNA_TX_STATUS, + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device ks8695_hpna_device = { + .name = "ks8695_ether", + .id = 2, + .dev = { + .dma_mask = ð_dmamask, + .coherent_dma_mask = 0xffffffff, + }, + .resource = ks8695_hpna_resources, + .num_resources = ARRAY_SIZE(ks8695_hpna_resources), +}; + +void __init ks8695_add_device_wan(void) +{ + platform_device_register(&ks8695_wan_device); +} + +void __init ks8695_add_device_lan(void) +{ + platform_device_register(&ks8695_lan_device); +} + +void __init ks8696_add_device_hpna(void) +{ + platform_device_register(&ks8695_hpna_device); +} +#else +void __init ks8695_add_device_wan(void) {} +void __init ks8695_add_device_lan(void) {} +void __init ks8696_add_device_hpna(void) {} +#endif + + +/* -------------------------------------------------------------------- + * Watchdog + * -------------------------------------------------------------------- */ + +#if defined(CONFIG_KS8695_WATCHDOG) || defined(CONFIG_KS8695_WATCHDOG_MODULE) +static struct platform_device ks8695_wdt_device = { + .name = "ks8695_wdt", + .id = -1, + .num_resources = 0, +}; + +static void __init ks8695_add_device_watchdog(void) +{ + platform_device_register(&ks8695_wdt_device); +} +#else +static void __init ks8695_add_device_watchdog(void) {} +#endif + + +/* -------------------------------------------------------------------- */ + +/* + * These devices are always present and don't need any board-specific + * setup. + */ +static int __init ks8695_add_standard_devices(void) +{ + ks8695_add_device_watchdog(); + return 0; +} + +arch_initcall(ks8695_add_standard_devices); diff --git a/arch/arm/mach-ks8695/generic.h b/arch/arm/mach-ks8695/generic.h new file mode 100644 index 000000000000..2fbfab8d5fae --- /dev/null +++ b/arch/arm/mach-ks8695/generic.h @@ -0,0 +1,15 @@ +/* + * arch/arm/mach-ks8695/generic.h + * + * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> + * Copyright (C) 2006 Simtec Electronics + * + * 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. +*/ + +extern __init void ks8695_map_io(void); +extern __init void ks8695_init_irq(void); +extern struct sys_timer ks8695_timer; diff --git a/arch/arm/mach-ks8695/irq.c b/arch/arm/mach-ks8695/irq.c new file mode 100644 index 000000000000..2407bba00547 --- /dev/null +++ b/arch/arm/mach-ks8695/irq.c @@ -0,0 +1,175 @@ +/* + * arch/arm/mach-ks8695/irq.c + * + * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> + * Copyright (C) 2006 Simtec Electronics + * + * 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/init.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/ioport.h> +#include <linux/ptrace.h> +#include <linux/sysdev.h> + +#include <asm/hardware.h> +#include <asm/irq.h> +#include <asm/io.h> + +#include <asm/mach/irq.h> + +#include <asm/arch/regs-irq.h> +#include <asm/arch/regs-gpio.h> + +static void ks8695_irq_mask(unsigned int irqno) +{ + unsigned long inten; + + inten = __raw_readl(KS8695_IRQ_VA + KS8695_INTEN); + inten &= ~(1 << irqno); + + __raw_writel(inten, KS8695_IRQ_VA + KS8695_INTEN); +} + +static void ks8695_irq_unmask(unsigned int irqno) +{ + unsigned long inten; + + inten = __raw_readl(KS8695_IRQ_VA + KS8695_INTEN); + inten |= (1 << irqno); + + __raw_writel(inten, KS8695_IRQ_VA + KS8695_INTEN); +} + +static void ks8695_irq_ack(unsigned int irqno) +{ + __raw_writel((1 << irqno), KS8695_IRQ_VA + KS8695_INTST); +} + + +static struct irq_chip ks8695_irq_level_chip; +static struct irq_chip ks8695_irq_edge_chip; + + +static int ks8695_irq_set_type(unsigned int irqno, unsigned int type) +{ + unsigned long ctrl, mode; + unsigned short level_triggered = 0; + + ctrl = __raw_readl(KS8695_GPIO_VA + KS8695_IOPC); + + switch (type) { + case IRQT_HIGH: + mode = IOPC_TM_HIGH; + level_triggered = 1; + break; + case IRQT_LOW: + mode = IOPC_TM_LOW; + level_triggered = 1; + break; + case IRQT_RISING: + mode = IOPC_TM_RISING; + break; + case IRQT_FALLING: + mode = IOPC_TM_FALLING; + break; + case IRQT_BOTHEDGE: + mode = IOPC_TM_EDGE; + break; + default: + return -EINVAL; + } + + switch (irqno) { + case KS8695_IRQ_EXTERN0: + ctrl &= ~IOPC_IOEINT0TM; + ctrl |= IOPC_IOEINT0_MODE(mode); + break; + case KS8695_IRQ_EXTERN1: + ctrl &= ~IOPC_IOEINT1TM; + ctrl |= IOPC_IOEINT1_MODE(mode); + break; + case KS8695_IRQ_EXTERN2: + ctrl &= ~IOPC_IOEINT2TM; + ctrl |= IOPC_IOEINT2_MODE(mode); + break; + case KS8695_IRQ_EXTERN3: + ctrl &= ~IOPC_IOEINT3TM; + ctrl |= IOPC_IOEINT3_MODE(mode); + break; + default: + return -EINVAL; + } + + if (level_triggered) { + set_irq_chip(irqno, &ks8695_irq_level_chip); + set_irq_handler(irqno, handle_level_irq); + } + else { + set_irq_chip(irqno, &ks8695_irq_edge_chip); + set_irq_handler(irqno, handle_edge_irq); + } + + __raw_writel(ctrl, KS8695_GPIO_VA + KS8695_IOPC); + return 0; +} + +static struct irq_chip ks8695_irq_level_chip = { + .ack = ks8695_irq_mask, + .mask = ks8695_irq_mask, + .unmask = ks8695_irq_unmask, + .set_type = ks8695_irq_set_type, +}; + +static struct irq_chip ks8695_irq_edge_chip = { + .ack = ks8695_irq_ack, + .mask = ks8695_irq_mask, + .unmask = ks8695_irq_unmask, + .set_type = ks8695_irq_set_type, +}; + +void __init ks8695_init_irq(void) +{ + unsigned int irq; + + /* Disable all interrupts initially */ + __raw_writel(0, KS8695_IRQ_VA + KS8695_INTMC); + __raw_writel(0, KS8695_IRQ_VA + KS8695_INTEN); + + for (irq = 0; irq < NR_IRQS; irq++) { + switch (irq) { + /* Level-triggered interrupts */ + case KS8695_IRQ_BUS_ERROR: + case KS8695_IRQ_UART_MODEM_STATUS: + case KS8695_IRQ_UART_LINE_STATUS: + case KS8695_IRQ_UART_RX: + case KS8695_IRQ_COMM_TX: + case KS8695_IRQ_COMM_RX: + set_irq_chip(irq, &ks8695_irq_level_chip); + set_irq_handler(irq, handle_level_irq); + break; + + /* Edge-triggered interrupts */ + default: + ks8695_irq_ack(irq); /* clear pending bit */ + set_irq_chip(irq, &ks8695_irq_edge_chip); + set_irq_handler(irq, handle_edge_irq); + } + + set_irq_flags(irq, IRQF_VALID); + } +} diff --git a/arch/arm/mach-ks8695/time.c b/arch/arm/mach-ks8695/time.c new file mode 100644 index 000000000000..d2c86e4a72eb --- /dev/null +++ b/arch/arm/mach-ks8695/time.c @@ -0,0 +1,114 @@ +/* + * arch/arm/mach-ks8695/time.c + * + * Copyright (C) 2006 Ben Dooks <ben@simtec.co.uk> + * Copyright (C) 2006 Simtec Electronics + * + * 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/init.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/sched.h> + +#include <asm/io.h> +#include <asm/mach/time.h> + +#include <asm/arch/regs-timer.h> +#include <asm/arch/regs-irq.h> + +#include "generic.h" + +/* + * Returns number of ms since last clock interrupt. Note that interrupts + * will have been disabled by do_gettimeoffset() + */ +static unsigned long ks8695_gettimeoffset (void) +{ + unsigned long elapsed, tick2, intpending; + + /* + * Get the current number of ticks. Note that there is a race + * condition between us reading the timer and checking for an + * interrupt. We solve this by ensuring that the counter has not + * reloaded between our two reads. + */ + elapsed = __raw_readl(KS8695_TMR_VA + KS8695_T1TC) + __raw_readl(KS8695_TMR_VA + KS8695_T1PD); + do { + tick2 = elapsed; + intpending = __raw_readl(KS8695_IRQ_VA + KS8695_INTST) & (1 << KS8695_IRQ_TIMER1); + elapsed = __raw_readl(KS8695_TMR_VA + KS8695_T1TC) + __raw_readl(KS8695_TMR_VA + KS8695_T1PD); + } while (elapsed > tick2); + + /* Convert to number of ticks expired (not remaining) */ + elapsed = (CLOCK_TICK_RATE / HZ) - elapsed; + + /* Is interrupt pending? If so, then timer has been reloaded already. */ + if (intpending) + elapsed += (CLOCK_TICK_RATE / HZ); + + /* Convert ticks to usecs */ + return (unsigned long)(elapsed * (tick_nsec / 1000)) / LATCH; +} + +/* + * IRQ handler for the timer. + */ +static irqreturn_t ks8695_timer_interrupt(int irq, void *dev_id) +{ + write_seqlock(&xtime_lock); + timer_tick(); + write_sequnlock(&xtime_lock); + + return IRQ_HANDLED; +} + +static struct irqaction ks8695_timer_irq = { + .name = "ks8695_tick", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = ks8695_timer_interrupt, +}; + +static void ks8695_timer_setup(void) +{ + unsigned long tmout = CLOCK_TICK_RATE / HZ; + unsigned long tmcon; + + /* disable timer1 */ + tmcon = __raw_readl(KS8695_TMR_VA + KS8695_TMCON); + __raw_writel(tmcon & ~TMCON_T1EN, KS8695_TMR_VA + KS8695_TMCON); + + __raw_writel(tmout / 2, KS8695_TMR_VA + KS8695_T1TC); + __raw_writel(tmout / 2, KS8695_TMR_VA + KS8695_T1PD); + + /* re-enable timer1 */ + __raw_writel(tmcon | TMCON_T1EN, KS8695_TMR_VA + KS8695_TMCON); +} + +static void __init ks8695_timer_init (void) +{ + ks8695_timer_setup(); + + /* Enable timer interrupts */ + setup_irq(KS8695_IRQ_TIMER1, &ks8695_timer_irq); +} + +struct sys_timer ks8695_timer = { + .init = ks8695_timer_init, + .offset = ks8695_gettimeoffset, + .resume = ks8695_timer_setup, +}; |