diff options
Diffstat (limited to 'arch/arm/mach-ns9xxx')
| -rw-r--r-- | arch/arm/mach-ns9xxx/Kconfig | 21 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/Makefile | 5 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/Makefile.boot | 2 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/board-a9m9750dev.c | 199 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/board-a9m9750dev.h | 15 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/generic.c | 42 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/generic.h | 19 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/irq.c | 94 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/mach-cc9p9360dev.c | 41 | ||||
| -rw-r--r-- | arch/arm/mach-ns9xxx/time.c | 88 |
10 files changed, 526 insertions, 0 deletions
diff --git a/arch/arm/mach-ns9xxx/Kconfig b/arch/arm/mach-ns9xxx/Kconfig new file mode 100644 index 00000000000..8175ba92a2f --- /dev/null +++ b/arch/arm/mach-ns9xxx/Kconfig @@ -0,0 +1,21 @@ +if ARCH_NS9XXX + +menu "NS9xxx Implementations" + +config MACH_CC9P9360DEV + bool "Connect Core 9P 9360 on an A9M9750 Devboard" + select PROCESSOR_NS9360 + select BOARD_A9M9750DEV + help + Say Y here if you are using the Digi Connect Core 9P 9360 + on an A9M9750 Development Board. + +config PROCESSOR_NS9360 + bool + +config BOARD_A9M9750DEV + bool + +endmenu + +endif diff --git a/arch/arm/mach-ns9xxx/Makefile b/arch/arm/mach-ns9xxx/Makefile new file mode 100644 index 00000000000..91e945f5e16 --- /dev/null +++ b/arch/arm/mach-ns9xxx/Makefile @@ -0,0 +1,5 @@ +obj-y := irq.o time.o generic.o + +obj-$(CONFIG_MACH_CC9P9360DEV) += mach-cc9p9360dev.o + +obj-$(CONFIG_BOARD_A9M9750DEV) += board-a9m9750dev.o diff --git a/arch/arm/mach-ns9xxx/Makefile.boot b/arch/arm/mach-ns9xxx/Makefile.boot new file mode 100644 index 00000000000..75ed64e90fa --- /dev/null +++ b/arch/arm/mach-ns9xxx/Makefile.boot @@ -0,0 +1,2 @@ +zreladdr-y := 0x108000 +params_phys-y := 0x100 diff --git a/arch/arm/mach-ns9xxx/board-a9m9750dev.c b/arch/arm/mach-ns9xxx/board-a9m9750dev.c new file mode 100644 index 00000000000..25289884a60 --- /dev/null +++ b/arch/arm/mach-ns9xxx/board-a9m9750dev.c @@ -0,0 +1,199 @@ +/* + * arch/arm/mach-ns9xxx/board-a9m9750dev.c + * + * Copyright (C) 2006,2007 by Digi International Inc. + * All rights reserved. + * + * 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/platform_device.h> +#include <linux/serial_8250.h> +#include <linux/irq.h> + +#include <asm/mach/map.h> + +#include <asm/arch-ns9xxx/board.h> +#include <asm/arch-ns9xxx/regs-sys.h> +#include <asm/arch-ns9xxx/regs-mem.h> +#include <asm/arch-ns9xxx/regs-bbu.h> +#include <asm/arch-ns9xxx/regs-board-a9m9750dev.h> + +#include "board-a9m9750dev.h" + +static struct map_desc board_a9m9750dev_io_desc[] __initdata = { + { /* FPGA on CS0 */ + .virtual = io_p2v(NS9XXX_CSxSTAT_PHYS(0)), + .pfn = __phys_to_pfn(NS9XXX_CSxSTAT_PHYS(0)), + .length = NS9XXX_CS0STAT_LENGTH, + .type = MT_DEVICE, + }, +}; + +void __init board_a9m9750dev_map_io(void) +{ + iotable_init(board_a9m9750dev_io_desc, + ARRAY_SIZE(board_a9m9750dev_io_desc)); +} + +static void a9m9750dev_fpga_ack_irq(unsigned int irq) +{ + /* nothing */ +} + +static void a9m9750dev_fpga_mask_irq(unsigned int irq) +{ + FPGA_IER &= ~(1 << (irq - FPGA_IRQ(0))); +} + +static void a9m9750dev_fpga_maskack_irq(unsigned int irq) +{ + a9m9750dev_fpga_mask_irq(irq); + a9m9750dev_fpga_ack_irq(irq); +} + +static void a9m9750dev_fpga_unmask_irq(unsigned int irq) +{ + FPGA_IER |= 1 << (irq - FPGA_IRQ(0)); +} + +static struct irq_chip a9m9750dev_fpga_chip = { + .ack = a9m9750dev_fpga_ack_irq, + .mask = a9m9750dev_fpga_mask_irq, + .mask_ack = a9m9750dev_fpga_maskack_irq, + .unmask = a9m9750dev_fpga_unmask_irq, +}; + +static void a9m9750dev_fpga_demux_handler(unsigned int irq, + struct irq_desc *desc) +{ + int stat = FPGA_ISR; + + while (stat != 0) { + int irqno = fls(stat) - 1; + + stat &= ~(1 << irqno); + + desc = irq_desc + FPGA_IRQ(irqno); + + desc_handle_irq(irqno, desc); + } +} + +void __init board_a9m9750dev_init_irq(void) +{ + u32 reg; + int i; + + /* + * configure gpio for IRQ_EXT2 + * use GPIO 11, because GPIO 32 is used for the LCD + */ + /* XXX: proper GPIO handling */ + BBU_GC(2) &= ~0x2000; + + for (i = FPGA_IRQ(0); i <= FPGA_IRQ(7); ++i) { + set_irq_chip(i, &a9m9750dev_fpga_chip); + set_irq_handler(i, handle_level_irq); + set_irq_flags(i, IRQF_VALID); + } + + /* IRQ_EXT2: level sensitive + active low */ + reg = SYS_EIC(2); + REGSET(reg, SYS_EIC, PLTY, AL); + REGSET(reg, SYS_EIC, LVEDG, LEVEL); + SYS_EIC(2) = reg; + + set_irq_chained_handler(IRQ_EXT2, + a9m9750dev_fpga_demux_handler); +} + +static struct plat_serial8250_port board_a9m9750dev_serial8250_port[] = { + { + .iobase = FPGA_UARTA_BASE, + .membase = (unsigned char*)FPGA_UARTA_BASE, + .mapbase = FPGA_UARTA_BASE, + .irq = IRQ_FPGA_UARTA, + .iotype = UPIO_MEM, + .uartclk = 18432000, + .regshift = 0, + .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ, + }, { + .iobase = FPGA_UARTB_BASE, + .membase = (unsigned char*)FPGA_UARTB_BASE, + .mapbase = FPGA_UARTB_BASE, + .irq = IRQ_FPGA_UARTB, + .iotype = UPIO_MEM, + .uartclk = 18432000, + .regshift = 0, + .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ, + }, { + .iobase = FPGA_UARTC_BASE, + .membase = (unsigned char*)FPGA_UARTC_BASE, + .mapbase = FPGA_UARTC_BASE, + .irq = IRQ_FPGA_UARTC, + .iotype = UPIO_MEM, + .uartclk = 18432000, + .regshift = 0, + .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ, + }, { + .iobase = FPGA_UARTD_BASE, + .membase = (unsigned char*)FPGA_UARTD_BASE, + .mapbase = FPGA_UARTD_BASE, + .irq = IRQ_FPGA_UARTD, + .iotype = UPIO_MEM, + .uartclk = 18432000, + .regshift = 0, + .flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ, + }, { + /* end marker */ + }, +}; + +static struct platform_device board_a9m9750dev_serial_device = { + .name = "serial8250", + .dev = { + .platform_data = board_a9m9750dev_serial8250_port, + }, +}; + +static struct platform_device *board_a9m9750dev_devices[] __initdata = { + &board_a9m9750dev_serial_device, +}; + +void __init board_a9m9750dev_init_machine(void) +{ + u32 reg; + + /* setup static CS0: memory base ... */ + REGSETIM(SYS_SMCSSMB(0), SYS_SMCSSMB, CSxB, + NS9XXX_CSxSTAT_PHYS(0) >> 12); + + /* ... and mask */ + reg = SYS_SMCSSMM(0); + REGSETIM(reg, SYS_SMCSSMM, CSxM, 0xfffff); + REGSET(reg, SYS_SMCSSMM, CSEx, EN); + SYS_SMCSSMM(0) = reg; + + /* setup static CS0: memory configuration */ + reg = MEM_SMC(0); + REGSET(reg, MEM_SMC, WSMC, OFF); + REGSET(reg, MEM_SMC, BSMC, OFF); + REGSET(reg, MEM_SMC, EW, OFF); + REGSET(reg, MEM_SMC, PB, 1); + REGSET(reg, MEM_SMC, PC, AL); + REGSET(reg, MEM_SMC, PM, DIS); + REGSET(reg, MEM_SMC, MW, 8); + MEM_SMC(0) = reg; + + /* setup static CS0: timing */ + MEM_SMWED(0) = 0x2; + MEM_SMOED(0) = 0x2; + MEM_SMRD(0) = 0x6; + MEM_SMWD(0) = 0x6; + + platform_add_devices(board_a9m9750dev_devices, + ARRAY_SIZE(board_a9m9750dev_devices)); +} + diff --git a/arch/arm/mach-ns9xxx/board-a9m9750dev.h b/arch/arm/mach-ns9xxx/board-a9m9750dev.h new file mode 100644 index 00000000000..edc75abbc5d --- /dev/null +++ b/arch/arm/mach-ns9xxx/board-a9m9750dev.h @@ -0,0 +1,15 @@ +/* + * arch/arm/mach-ns9xxx/board-a9m9750dev.h + * + * Copyright (C) 2006 by Digi International Inc. + * All rights reserved. + * + * 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/init.h> + +void __init board_a9m9750dev_map_io(void); +void __init board_a9m9750dev_init_machine(void); +void __init board_a9m9750dev_init_irq(void); diff --git a/arch/arm/mach-ns9xxx/generic.c b/arch/arm/mach-ns9xxx/generic.c new file mode 100644 index 00000000000..83e2b6532b2 --- /dev/null +++ b/arch/arm/mach-ns9xxx/generic.c @@ -0,0 +1,42 @@ +/* + * arch/arm/mach-ns9xxx/generic.c + * + * Copyright (C) 2006 by Digi International Inc. + * All rights reserved. + * + * 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/init.h> +#include <asm/memory.h> +#include <asm/page.h> +#include <asm/mach-types.h> +#include <asm/mach/map.h> +#include <asm/arch-ns9xxx/regs-sys.h> +#include <asm/arch-ns9xxx/regs-mem.h> +#include <asm/arch-ns9xxx/board.h> + +static struct map_desc standard_io_desc[] __initdata = { + { /* BBus */ + .virtual = io_p2v(0x90000000), + .pfn = __phys_to_pfn(0x90000000), + .length = 0x00700000, + .type = MT_DEVICE, + }, { /* AHB */ + .virtual = io_p2v(0xa0100000), + .pfn = __phys_to_pfn(0xa0100000), + .length = 0x00900000, + .type = MT_DEVICE, + }, +}; + +void __init ns9xxx_map_io(void) +{ + iotable_init(standard_io_desc, ARRAY_SIZE(standard_io_desc)); +} + +void __init ns9xxx_init_machine(void) +{ +} diff --git a/arch/arm/mach-ns9xxx/generic.h b/arch/arm/mach-ns9xxx/generic.h new file mode 100644 index 00000000000..687e291773f --- /dev/null +++ b/arch/arm/mach-ns9xxx/generic.h @@ -0,0 +1,19 @@ +/* + * arch/arm/mach-ns9xxx/generic.h + * + * Copyright (C) 2006 by Digi International Inc. + * All rights reserved. + * + * 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/time.h> +#include <asm/mach/time.h> +#include <linux/init.h> + +void __init ns9xxx_init_irq(void); +void __init ns9xxx_map_io(void); +void __init ns9xxx_init_machine(void); + +extern struct sys_timer ns9xxx_timer; diff --git a/arch/arm/mach-ns9xxx/irq.c b/arch/arm/mach-ns9xxx/irq.c new file mode 100644 index 00000000000..83d92724a97 --- /dev/null +++ b/arch/arm/mach-ns9xxx/irq.c @@ -0,0 +1,94 @@ +/* + * arch/arm/mach-ns9xxx/irq.c + * + * Copyright (C) 2006,2007 by Digi International Inc. + * All rights reserved. + * + * 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/interrupt.h> +#include <asm/mach/irq.h> +#include <asm/mach-types.h> +#include <asm/arch-ns9xxx/regs-sys.h> +#include <asm/arch-ns9xxx/irqs.h> +#include <asm/arch-ns9xxx/board.h> + +#include "generic.h" + +static void ns9xxx_ack_irq_timer(unsigned int irq) +{ + u32 tc = SYS_TC(irq - IRQ_TIMER0); + + REGSET(tc, SYS_TCx, INTC, SET); + SYS_TC(irq - IRQ_TIMER0) = tc; + + REGSET(tc, SYS_TCx, INTC, UNSET); + SYS_TC(irq - IRQ_TIMER0) = tc; +} + +void (*ns9xxx_ack_irq_functions[NR_IRQS])(unsigned int) = { + [IRQ_TIMER0] = ns9xxx_ack_irq_timer, + [IRQ_TIMER1] = ns9xxx_ack_irq_timer, + [IRQ_TIMER2] = ns9xxx_ack_irq_timer, + [IRQ_TIMER3] = ns9xxx_ack_irq_timer, +}; + +static void ns9xxx_mask_irq(unsigned int irq) +{ + /* XXX: better use cpp symbols */ + SYS_IC(irq / 4) &= ~(1 << (7 + 8 * (3 - (irq & 3)))); +} + +static void ns9xxx_ack_irq(unsigned int irq) +{ + if (!ns9xxx_ack_irq_functions[irq]) { + printk(KERN_ERR "no ack function for irq %u\n", irq); + BUG(); + } + + ns9xxx_ack_irq_functions[irq](irq); + SYS_ISRADDR = 0; +} + +static void ns9xxx_maskack_irq(unsigned int irq) +{ + ns9xxx_mask_irq(irq); + ns9xxx_ack_irq(irq); +} + +static void ns9xxx_unmask_irq(unsigned int irq) +{ + /* XXX: better use cpp symbols */ + SYS_IC(irq / 4) |= 1 << (7 + 8 * (3 - (irq & 3))); +} + +static struct irq_chip ns9xxx_chip = { + .ack = ns9xxx_ack_irq, + .mask = ns9xxx_mask_irq, + .mask_ack = ns9xxx_maskack_irq, + .unmask = ns9xxx_unmask_irq, +}; + +void __init ns9xxx_init_irq(void) +{ + int i; + + /* disable all IRQs */ + for (i = 0; i < 8; ++i) + SYS_IC(i) = (4 * i) << 24 | (4 * i + 1) << 16 | + (4 * i + 2) << 8 | (4 * i + 3); + + /* simple interrupt prio table: + * prio(x) < prio(y) <=> x < y + */ + for (i = 0; i < 32; ++i) + SYS_IVA(i) = i; + + for (i = IRQ_WATCHDOG; i <= IRQ_EXT3; ++i) { + set_irq_chip(i, &ns9xxx_chip); + set_irq_handler(i, handle_level_irq); + set_irq_flags(i, IRQF_VALID); + } +} diff --git a/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c b/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c new file mode 100644 index 00000000000..a193dd93151 --- /dev/null +++ b/arch/arm/mach-ns9xxx/mach-cc9p9360dev.c @@ -0,0 +1,41 @@ +/* + * arch/arm/mach-ns9xxx/mach-cc9p9360dev.c + * + * Copyright (C) 2006 by Digi International Inc. + * All rights reserved. + * + * 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 <asm/mach/arch.h> +#include <asm/mach-types.h> + +#include "board-a9m9750dev.h" +#include "generic.h" + +static void __init mach_cc9p9360dev_map_io(void) +{ + ns9xxx_map_io(); + board_a9m9750dev_map_io(); +} + +static void __init mach_cc9p9360dev_init_irq(void) +{ + ns9xxx_init_irq(); + board_a9m9750dev_init_irq(); +} + +static void __init mach_cc9p9360dev_init_machine(void) +{ + ns9xxx_init_machine(); + board_a9m9750dev_init_machine(); +} + +MACHINE_START(CC9P9360DEV, "Connect Core 9P 9360 on an A9M9750 Devboard") + .map_io = mach_cc9p9360dev_map_io, + .init_irq = mach_cc9p9360dev_init_irq, + .init_machine = mach_cc9p9360dev_init_machine, + .timer = &ns9xxx_timer, + .boot_params = 0x100, +MACHINE_END diff --git a/arch/arm/mach-ns9xxx/time.c b/arch/arm/mach-ns9xxx/time.c new file mode 100644 index 00000000000..eec05f18714 --- /dev/null +++ b/arch/arm/mach-ns9xxx/time.c @@ -0,0 +1,88 @@ +/* + * arch/arm/mach-ns9xxx/time.c + * + * Copyright (C) 2006 by Digi International Inc. + * All rights reserved. + * + * 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/jiffies.h> +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <asm/arch-ns9xxx/regs-sys.h> +#include <asm/arch-ns9xxx/clock.h> +#include <asm/arch-ns9xxx/irqs.h> +#include <asm/arch/system.h> +#include "generic.h" + +#define TIMERCLOCKSELECT 64 + +static u32 usecs_per_tick; + +static irqreturn_t +ns9xxx_timer_interrupt(int irq, void *dev_id) +{ + write_seqlock(&xtime_lock); + timer_tick(); + write_sequnlock(&xtime_lock); + + return IRQ_HANDLED; +} + +static unsigned long ns9xxx_timer_gettimeoffset(void) +{ + /* return the microseconds which have passed since the last interrupt + * was _serviced_. That is, if an interrupt is pending or the counter + * reloads, return one periode more. */ + + u32 counter1 = SYS_TR(0); + int pending = SYS_ISR & (1 << IRQ_TIMER0); + u32 counter2 = SYS_TR(0); + u32 elapsed; + + if (pending || counter2 > counter1) + elapsed = 2 * SYS_TRC(0) - counter2; + else + elapsed = SYS_TRC(0) - counter1; + + return (elapsed * usecs_per_tick) >> 16; + +} + +static struct irqaction ns9xxx_timer_irq = { + .name = "NS9xxx Timer Tick", + .flags = IRQF_DISABLED | IRQF_TIMER, + .handler = ns9xxx_timer_interrupt, +}; + +static void __init ns9xxx_timer_init(void) +{ + int tc; + + usecs_per_tick = + SH_DIV(1000000 * TIMERCLOCKSELECT, ns9xxx_cpuclock(), 16); + + /* disable timer */ + if ((tc = SYS_TC(0)) & SYS_TCx_TEN) + SYS_TC(0) = tc & ~SYS_TCx_TEN; + + SYS_TRC(0) = SH_DIV(ns9xxx_cpuclock(), (TIMERCLOCKSELECT * HZ), 0); + + REGSET(tc, SYS_TCx, TEN, EN); + REGSET(tc, SYS_TCx, TLCS, DIV64); /* This must match TIMERCLOCKSELECT */ + REGSET(tc, SYS_TCx, INTS, EN); + REGSET(tc, SYS_TCx, UDS, DOWN); + REGSET(tc, SYS_TCx, TDBG, STOP); + REGSET(tc, SYS_TCx, TSZ, 32); + REGSET(tc, SYS_TCx, REN, EN); + SYS_TC(0) = tc; + + setup_irq(IRQ_TIMER0, &ns9xxx_timer_irq); +} + +struct sys_timer ns9xxx_timer = { + .init = ns9xxx_timer_init, + .offset = ns9xxx_timer_gettimeoffset, +}; |