ARM: Add Gemini architecture v3
Adds support for Cortina Systems Gemini family CPUs: http://www.cortina-systems.com/products/category/18 v3: - fixed __io(a) to be defined as __typesafe_io(a) v2: - #include <asm/io.h> -> <linux/io.h> - remove asm/system.h include - revorked mm.c to use named initializers - removed "empty" dma.h - updated copyrights Signed-off-by: Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
This commit is contained in:
Paulius Zaleckas
parent
6a915af99f
commit
59d3a193f1
21 changed files with 1033 additions and 0 deletions
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@ -275,6 +275,12 @@ config ARCH_EP93XX
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help
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This enables support for the Cirrus EP93xx series of CPUs.
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config ARCH_GEMINI
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bool "Cortina Systems Gemini"
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select CPU_FA526
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help
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Support for the Cortina Systems Gemini family SoCs
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config ARCH_FOOTBRIDGE
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bool "FootBridge"
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select CPU_SA110
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@ -598,6 +604,8 @@ source "arch/arm/mach-ep93xx/Kconfig"
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source "arch/arm/mach-footbridge/Kconfig"
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source "arch/arm/mach-gemini/Kconfig"
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source "arch/arm/mach-integrator/Kconfig"
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source "arch/arm/mach-iop32x/Kconfig"
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@ -108,6 +108,7 @@ endif
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machine-$(CONFIG_ARCH_PXA) := pxa
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machine-$(CONFIG_ARCH_L7200) := l7200
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machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
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machine-$(CONFIG_ARCH_GEMINI) := gemini
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textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
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machine-$(CONFIG_ARCH_CLPS711X) := clps711x
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machine-$(CONFIG_ARCH_IOP32X) := iop32x
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12
arch/arm/mach-gemini/Kconfig
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12
arch/arm/mach-gemini/Kconfig
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@ -0,0 +1,12 @@
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if ARCH_GEMINI
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menu "Cortina Systems Gemini Implementations"
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endmenu
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config GEMINI_MEM_SWAP
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bool "Gemini memory is swapped"
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help
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Say Y here if Gemini memory is swapped by bootloader.
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endif
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7
arch/arm/mach-gemini/Makefile
Normal file
7
arch/arm/mach-gemini/Makefile
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@ -0,0 +1,7 @@
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#
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# Makefile for the linux kernel.
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#
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# Object file lists.
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obj-y := irq.o mm.o time.o devices.o
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9
arch/arm/mach-gemini/Makefile.boot
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9
arch/arm/mach-gemini/Makefile.boot
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@ -0,0 +1,9 @@
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ifeq ($(CONFIG_GEMINI_MEM_SWAP),y)
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zreladdr-y := 0x00008000
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params_phys-y := 0x00000100
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initrd_phys-y := 0x00800000
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else
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zreladdr-y := 0x10008000
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params_phys-y := 0x10000100
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initrd_phys-y := 0x10800000
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endif
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27
arch/arm/mach-gemini/common.h
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27
arch/arm/mach-gemini/common.h
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@ -0,0 +1,27 @@
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/*
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* Common Gemini architecture functions
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*
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* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __GEMINI_COMMON_H__
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#define __GEMINI_COMMON_H__
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struct mtd_partition;
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extern void gemini_map_io(void);
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extern void gemini_init_irq(void);
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extern void gemini_timer_init(void);
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/* Common platform devices registration functions */
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extern int platform_register_uart(void);
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extern int platform_register_pflash(unsigned int size,
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struct mtd_partition *parts,
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unsigned int nr_parts);
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#endif /* __GEMINI_COMMON_H__ */
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92
arch/arm/mach-gemini/devices.c
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92
arch/arm/mach-gemini/devices.c
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@ -0,0 +1,92 @@
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/*
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* Common devices definition for Gemini
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*
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* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/io.h>
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#include <linux/platform_device.h>
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#include <linux/serial_8250.h>
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#include <linux/mtd/physmap.h>
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#include <mach/irqs.h>
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#include <mach/hardware.h>
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#include <mach/global_reg.h>
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static struct plat_serial8250_port serial_platform_data[] = {
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{
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.membase = (void *)IO_ADDRESS(GEMINI_UART_BASE),
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.mapbase = GEMINI_UART_BASE,
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.irq = IRQ_UART,
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.uartclk = UART_CLK,
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.regshift = 2,
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.iotype = UPIO_MEM,
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.type = PORT_16550A,
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.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE,
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},
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{},
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};
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static struct platform_device serial_device = {
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.name = "serial8250",
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.id = PLAT8250_DEV_PLATFORM,
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.dev = {
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.platform_data = serial_platform_data,
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},
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};
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int platform_register_uart(void)
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{
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return platform_device_register(&serial_device);
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}
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static struct resource flash_resource = {
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.start = GEMINI_FLASH_BASE,
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.flags = IORESOURCE_MEM,
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};
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static struct physmap_flash_data pflash_platform_data = {};
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static struct platform_device pflash_device = {
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.name = "physmap-flash",
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.id = 0,
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.dev = {
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.platform_data = &pflash_platform_data,
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},
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.resource = &flash_resource,
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.num_resources = 1,
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};
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int platform_register_pflash(unsigned int size, struct mtd_partition *parts,
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unsigned int nr_parts)
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{
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unsigned int reg;
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reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS);
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if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL)
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return -ENXIO;
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if (reg & FLASH_WIDTH_16BIT)
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pflash_platform_data.width = 2;
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else
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pflash_platform_data.width = 1;
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/* enable parallel flash pins and disable others */
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reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
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reg &= ~PFLASH_PADS_DISABLE;
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reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE;
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__raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
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flash_resource.end = flash_resource.start + size - 1;
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pflash_platform_data.parts = parts;
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pflash_platform_data.nr_parts = nr_parts;
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return platform_device_register(&pflash_device);
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}
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23
arch/arm/mach-gemini/include/mach/debug-macro.S
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23
arch/arm/mach-gemini/include/mach/debug-macro.S
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@ -0,0 +1,23 @@
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/*
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* Debugging macro include header
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*
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* Copyright (C) 1994-1999 Russell King
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* Copyright (C) 2001-2006 Storlink, Corp.
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* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <mach/hardware.h>
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.macro addruart,rx
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mrc p15, 0, \rx, c1, c0
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tst \rx, #1 @ MMU enabled?
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ldreq \rx, =GEMINI_UART_BASE @ physical
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ldrne \rx, =IO_ADDRESS(GEMINI_UART_BASE) @ virtual
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.endm
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#define UART_SHIFT 2
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#define FLOW_CONTROL
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#include <asm/hardware/debug-8250.S>
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39
arch/arm/mach-gemini/include/mach/entry-macro.S
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39
arch/arm/mach-gemini/include/mach/entry-macro.S
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@ -0,0 +1,39 @@
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/*
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* Low-level IRQ helper macros for Gemini platform.
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*
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* Copyright (C) 2001-2006 Storlink, Corp.
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* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <mach/hardware.h>
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#define IRQ_STATUS 0x14
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.macro disable_fiq
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.endm
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.macro get_irqnr_preamble, base, tmp
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.endm
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.macro arch_ret_to_user, tmp1, tmp2
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.endm
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.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
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ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS)
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ldr \irqnr, [\irqstat]
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cmp \irqnr, #0
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beq 2313f
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mov \tmp, \irqnr
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mov \irqnr, #0
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2312:
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tst \tmp, #1
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bne 2313f
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add \irqnr, \irqnr, #1
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mov \tmp, \tmp, lsr #1
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cmp \irqnr, #31
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bcc 2312b
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2313:
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.endm
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278
arch/arm/mach-gemini/include/mach/global_reg.h
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278
arch/arm/mach-gemini/include/mach/global_reg.h
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@ -0,0 +1,278 @@
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/*
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* This file contains the hardware definitions for Gemini.
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*
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* Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __MACH_GLOBAL_REG_H
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#define __MACH_GLOBAL_REG_H
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/* Global Word ID Register*/
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#define GLOBAL_ID 0x00
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#define CHIP_ID(reg) ((reg) >> 8)
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#define CHIP_REVISION(reg) ((reg) & 0xFF)
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/* Global Status Register */
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#define GLOBAL_STATUS 0x04
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#define CPU_BIG_ENDIAN (1 << 31)
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#define PLL_OSC_30M (1 << 30) /* else 60MHz */
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#define OPERATION_MODE_MASK (0xF << 26)
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#define OPM_IDDQ (0xF << 26)
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#define OPM_NAND (0xE << 26)
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#define OPM_RING (0xD << 26)
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#define OPM_DIRECT_BOOT (0xC << 26)
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#define OPM_USB1_PHY_TEST (0xB << 26)
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#define OPM_USB0_PHY_TEST (0xA << 26)
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#define OPM_SATA1_PHY_TEST (0x9 << 26)
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#define OPM_SATA0_PHY_TEST (0x8 << 26)
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#define OPM_ICE_ARM (0x7 << 26)
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#define OPM_ICE_FARADAY (0x6 << 26)
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#define OPM_PLL_BYPASS (0x5 << 26)
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#define OPM_DEBUG (0x4 << 26)
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#define OPM_BURN_IN (0x3 << 26)
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#define OPM_MBIST (0x2 << 26)
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#define OPM_SCAN (0x1 << 26)
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#define OPM_REAL (0x0 << 26)
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#define FLASH_TYPE_MASK (0x3 << 24)
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#define FLASH_TYPE_NAND_2K (0x3 << 24)
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#define FLASH_TYPE_NAND_512 (0x2 << 24)
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#define FLASH_TYPE_PARALLEL (0x1 << 24)
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#define FLASH_TYPE_SERIAL (0x0 << 24)
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/* if parallel */
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#define FLASH_WIDTH_16BIT (1 << 23) /* else 8 bit */
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/* if serial */
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#define FLASH_ATMEL (1 << 23) /* else STM */
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#define FLASH_SIZE_MASK (0x3 << 21)
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#define NAND_256M (0x3 << 21) /* and more */
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#define NAND_128M (0x2 << 21)
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#define NAND_64M (0x1 << 21)
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#define NAND_32M (0x0 << 21)
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#define ATMEL_16M (0x3 << 21) /* and more */
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#define ATMEL_8M (0x2 << 21)
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#define ATMEL_4M_2M (0x1 << 21)
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#define ATMEL_1M (0x0 << 21) /* and less */
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#define STM_32M (1 << 22) /* and more */
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#define STM_16M (0 << 22) /* and less */
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#define FLASH_PARALLEL_HIGH_PIN_CNT (1 << 20) /* else low pin cnt */
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#define CPU_AHB_RATIO_MASK (0x3 << 18)
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#define CPU_AHB_1_1 (0x0 << 18)
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#define CPU_AHB_3_2 (0x1 << 18)
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#define CPU_AHB_24_13 (0x2 << 18)
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#define CPU_AHB_2_1 (0x3 << 18)
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#define REG_TO_AHB_SPEED(reg) ((((reg) >> 15) & 0x7) * 10 + 130)
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#define AHB_SPEED_TO_REG(x) ((((x - 130)) / 10) << 15)
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/* it is posible to override some settings, use >> OVERRIDE_xxxx_SHIFT */
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#define OVERRIDE_FLASH_TYPE_SHIFT 16
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#define OVERRIDE_FLASH_WIDTH_SHIFT 16
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#define OVERRIDE_FLASH_SIZE_SHIFT 16
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#define OVERRIDE_CPU_AHB_RATIO_SHIFT 15
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#define OVERRIDE_AHB_SPEED_SHIFT 15
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/* Global PLL Control Register */
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#define GLOBAL_PLL_CTRL 0x08
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#define PLL_BYPASS (1 << 31)
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#define PLL_POWER_DOWN (1 << 8)
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#define PLL_CONTROL_Q (0x1F << 0)
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/* Global Soft Reset Control Register */
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#define GLOBAL_RESET 0x0C
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#define RESET_GLOBAL (1 << 31)
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#define RESET_CPU1 (1 << 30)
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#define RESET_TVE (1 << 28)
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#define RESET_SATA1 (1 << 27)
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#define RESET_SATA0 (1 << 26)
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#define RESET_CIR (1 << 25)
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#define RESET_EXT_DEV (1 << 24)
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#define RESET_WD (1 << 23)
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#define RESET_GPIO2 (1 << 22)
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#define RESET_GPIO1 (1 << 21)
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#define RESET_GPIO0 (1 << 20)
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#define RESET_SSP (1 << 19)
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#define RESET_UART (1 << 18)
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#define RESET_TIMER (1 << 17)
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#define RESET_RTC (1 << 16)
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#define RESET_INT1 (1 << 15)
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#define RESET_INT0 (1 << 14)
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#define RESET_LCD (1 << 13)
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#define RESET_LPC (1 << 12)
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#define RESET_APB (1 << 11)
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#define RESET_DMA (1 << 10)
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#define RESET_USB1 (1 << 9)
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#define RESET_USB0 (1 << 8)
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#define RESET_PCI (1 << 7)
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#define RESET_GMAC1 (1 << 6)
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#define RESET_GMAC0 (1 << 5)
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#define RESET_SECURITY (1 << 4)
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#define RESET_RAID (1 << 3)
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#define RESET_IDE (1 << 2)
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#define RESET_FLASH (1 << 1)
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#define RESET_DRAM (1 << 0)
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/* Global IO Pad Driving Capability Control Register */
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#define GLOBAL_IO_DRIVING_CTRL 0x10
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#define DRIVING_CURRENT_MASK 0x3
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/* here 00-4mA, 01-8mA, 10-12mA, 11-16mA */
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#define GPIO1_PADS_31_28_SHIFT 28
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#define GPIO0_PADS_31_16_SHIFT 26
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#define GPIO0_PADS_15_0_SHIFT 24
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#define PCI_AND_EXT_RESET_PADS_SHIFT 22
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#define IDE_PADS_SHIFT 20
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#define GMAC1_PADS_SHIFT 18
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#define GMAC0_PADS_SHIFT 16
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/* DRAM is not in mA and poorly documented */
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#define DRAM_CLOCK_PADS_SHIFT 8
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#define DRAM_DATA_PADS_SHIFT 4
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#define DRAM_CONTROL_PADS_SHIFT 0
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/* Global IO Pad Slew Rate Control Register */
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#define GLOBAL_IO_SLEW_RATE_CTRL 0x14
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#define GPIO1_PADS_31_28_SLOW (1 << 10)
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#define GPIO0_PADS_31_16_SLOW (1 << 9)
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#define GPIO0_PADS_15_0_SLOW (1 << 8)
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#define PCI_PADS_SLOW (1 << 7)
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#define IDE_PADS_SLOW (1 << 6)
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#define GMAC1_PADS_SLOW (1 << 5)
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#define GMAC0_PADS_SLOW (1 << 4)
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#define DRAM_CLOCK_PADS_SLOW (1 << 1)
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#define DRAM_IO_PADS_SLOW (1 << 0)
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/*
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* General skew control defines
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* 16 steps, each step is around 0.2ns
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*/
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#define SKEW_MASK 0xF
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||||
/* Global IDE PAD Skew Control Register */
|
||||
#define GLOBAL_IDE_SKEW_CTRL 0x18
|
||||
|
||||
#define IDE1_HOST_STROBE_DELAY_SHIFT 28
|
||||
#define IDE1_DEVICE_STROBE_DELAY_SHIFT 24
|
||||
#define IDE1_OUTPUT_IO_SKEW_SHIFT 20
|
||||
#define IDE1_INPUT_IO_SKEW_SHIFT 16
|
||||
#define IDE0_HOST_STROBE_DELAY_SHIFT 12
|
||||
#define IDE0_DEVICE_STROBE_DELAY_SHIFT 8
|
||||
#define IDE0_OUTPUT_IO_SKEW_SHIFT 4
|
||||
#define IDE0_INPUT_IO_SKEW_SHIFT 0
|
||||
|
||||
/* Global GMAC Control Pad Skew Control Register */
|
||||
#define GLOBAL_GMAC_CTRL_SKEW_CTRL 0x1C
|
||||
|
||||
#define GMAC1_TXC_SKEW_SHIFT 28
|
||||
#define GMAC1_TXEN_SKEW_SHIFT 24
|
||||
#define GMAC1_RXC_SKEW_SHIFT 20
|
||||
#define GMAC1_RXDV_SKEW_SHIFT 16
|
||||
#define GMAC0_TXC_SKEW_SHIFT 12
|
||||
#define GMAC0_TXEN_SKEW_SHIFT 8
|
||||
#define GMAC0_RXC_SKEW_SHIFT 4
|
||||
#define GMAC0_RXDV_SKEW_SHIFT 0
|
||||
|
||||
/* Global GMAC0 Data PAD Skew Control Register */
|
||||
#define GLOBAL_GMAC0_DATA_SKEW_CTRL 0x20
|
||||
/* Global GMAC1 Data PAD Skew Control Register */
|
||||
#define GLOBAL_GMAC1_DATA_SKEW_CTRL 0x24
|
||||
|
||||
#define GMAC_TXD_SKEW_SHIFT(x) (((x) * 4) + 16)
|
||||
#define GMAC_RXD_SKEW_SHIFT(x) ((x) * 4)
|
||||
|
||||
/* CPU has two AHB busses. */
|
||||
|
||||
/* Global Arbitration0 Control Register */
|
||||
#define GLOBAL_ARBITRATION0_CTRL 0x28
|
||||
|
||||
#define BOOT_CONTROLLER_HIGH_PRIO (1 << 3)
|
||||
#define DMA_BUS1_HIGH_PRIO (1 << 2)
|
||||
#define CPU0_HIGH_PRIO (1 << 0)
|
||||
|
||||
/* Global Arbitration1 Control Register */
|
||||
#define GLOBAL_ARBITRATION1_CTRL 0x2C
|
||||
|
||||
#define TVE_HIGH_PRIO (1 << 9)
|
||||
#define PCI_HIGH_PRIO (1 << 8)
|
||||
#define USB1_HIGH_PRIO (1 << 7)
|
||||
#define USB0_HIGH_PRIO (1 << 6)
|
||||
#define GMAC1_HIGH_PRIO (1 << 5)
|
||||
#define GMAC0_HIGH_PRIO (1 << 4)
|
||||
#define SECURITY_HIGH_PRIO (1 << 3)
|
||||
#define RAID_HIGH_PRIO (1 << 2)
|
||||
#define IDE_HIGH_PRIO (1 << 1)
|
||||
#define DMA_BUS2_HIGH_PRIO (1 << 0)
|
||||
|
||||
/* Common bits for both arbitration registers */
|
||||
#define BURST_LENGTH_SHIFT 16
|
||||
#define BURST_LENGTH_MASK (0x3F << 16)
|
||||
|
||||
/* Miscellaneous Control Register */
|
||||
#define GLOBAL_MISC_CTRL 0x30
|
||||
|
||||
#define MEMORY_SPACE_SWAP (1 << 31)
|
||||
#define USB1_PLUG_MINIB (1 << 30) /* else plug is mini-A */
|
||||
#define USB0_PLUG_MINIB (1 << 29)
|
||||
#define GMAC_GMII (1 << 28)
|
||||
#define GMAC_1_ENABLE (1 << 27)
|
||||
/* TODO: define ATA/SATA bits */
|
||||
#define USB1_VBUS_ON (1 << 23)
|
||||
#define USB0_VBUS_ON (1 << 22)
|
||||
#define APB_CLKOUT_ENABLE (1 << 21)
|
||||
#define TVC_CLKOUT_ENABLE (1 << 20)
|
||||
#define EXT_CLKIN_ENABLE (1 << 19)
|
||||
#define PCI_66MHZ (1 << 18) /* else 33 MHz */
|
||||
#define PCI_CLKOUT_ENABLE (1 << 17)
|
||||
#define LPC_CLKOUT_ENABLE (1 << 16)
|
||||
#define USB1_WAKEUP_ON (1 << 15)
|
||||
#define USB0_WAKEUP_ON (1 << 14)
|
||||
/* TODO: define PCI idle detect bits */
|
||||
#define TVC_PADS_ENABLE (1 << 9)
|
||||
#define SSP_PADS_ENABLE (1 << 8)
|
||||
#define LCD_PADS_ENABLE (1 << 7)
|
||||
#define LPC_PADS_ENABLE (1 << 6)
|
||||
#define PCI_PADS_ENABLE (1 << 5)
|
||||
#define IDE_PADS_ENABLE (1 << 4)
|
||||
#define DRAM_PADS_POWER_DOWN (1 << 3)
|
||||
#define NAND_PADS_DISABLE (1 << 2)
|
||||
#define PFLASH_PADS_DISABLE (1 << 1)
|
||||
#define SFLASH_PADS_DISABLE (1 << 0)
|
||||
|
||||
/* Global Clock Control Register */
|
||||
#define GLOBAL_CLOCK_CTRL 0x34
|
||||
|
||||
#define POWER_STATE_G0 (1 << 31)
|
||||
#define POWER_STATE_S1 (1 << 30) /* else it is S3/S4 state */
|
||||
#define SECURITY_APB_AHB (1 << 29)
|
||||
/* else Security APB clk will be 0.75xAHB */
|
||||
/* TODO: TVC clock divider */
|
||||
#define PCI_CLKRUN_ENABLE (1 << 16)
|
||||
#define BOOT_CLK_DISABLE (1 << 13)
|
||||
#define TVC_CLK_DISABLE (1 << 12)
|
||||
#define FLASH_CLK_DISABLE (1 << 11)
|
||||
#define DDR_CLK_DISABLE (1 << 10)
|
||||
#define PCI_CLK_DISABLE (1 << 9)
|
||||
#define IDE_CLK_DISABLE (1 << 8)
|
||||
#define USB1_CLK_DISABLE (1 << 7)
|
||||
#define USB0_CLK_DISABLE (1 << 6)
|
||||
#define SATA1_CLK_DISABLE (1 << 5)
|
||||
#define SATA0_CLK_DISABLE (1 << 4)
|
||||
#define GMAC1_CLK_DISABLE (1 << 3)
|
||||
#define GMAC0_CLK_DISABLE (1 << 2)
|
||||
#define SECURITY_CLK_DISABLE (1 << 1)
|
||||
|
||||
/* TODO: other registers definitions if needed */
|
||||
|
||||
#endif /* __MACH_GLOBAL_REG_H */
|
||||
75
arch/arm/mach-gemini/include/mach/hardware.h
Normal file
75
arch/arm/mach-gemini/include/mach/hardware.h
Normal file
|
|
@ -0,0 +1,75 @@
|
|||
/*
|
||||
* This file contains the hardware definitions for Gemini.
|
||||
*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#ifndef __MACH_HARDWARE_H
|
||||
#define __MACH_HARDWARE_H
|
||||
|
||||
/*
|
||||
* Memory Map definitions
|
||||
*/
|
||||
/* FIXME: Does it really swap SRAM like this? */
|
||||
#ifdef CONFIG_GEMINI_MEM_SWAP
|
||||
# define GEMINI_DRAM_BASE 0x00000000
|
||||
# define GEMINI_SRAM_BASE 0x20000000
|
||||
#else
|
||||
# define GEMINI_SRAM_BASE 0x00000000
|
||||
# define GEMINI_DRAM_BASE 0x10000000
|
||||
#endif
|
||||
#define GEMINI_FLASH_BASE 0x30000000
|
||||
#define GEMINI_GLOBAL_BASE 0x40000000
|
||||
#define GEMINI_WAQTCHDOG_BASE 0x41000000
|
||||
#define GEMINI_UART_BASE 0x42000000
|
||||
#define GEMINI_TIMER_BASE 0x43000000
|
||||
#define GEMINI_LCD_BASE 0x44000000
|
||||
#define GEMINI_RTC_BASE 0x45000000
|
||||
#define GEMINI_SATA_BASE 0x46000000
|
||||
#define GEMINI_LPC_HOST_BASE 0x47000000
|
||||
#define GEMINI_LPC_IO_BASE 0x47800000
|
||||
#define GEMINI_INTERRUPT_BASE 0x48000000
|
||||
/* TODO: Different interrupt controlers when SMP
|
||||
* #define GEMINI_INTERRUPT0_BASE 0x48000000
|
||||
* #define GEMINI_INTERRUPT1_BASE 0x49000000
|
||||
*/
|
||||
#define GEMINI_SSP_CTRL_BASE 0x4A000000
|
||||
#define GEMINI_POWER_CTRL_BASE 0x4B000000
|
||||
#define GEMINI_CIR_BASE 0x4C000000
|
||||
#define GEMINI_GPIO_BASE(x) (0x4D000000 + (x) * 0x1000000)
|
||||
#define GEMINI_PCI_IO_BASE 0x50000000
|
||||
#define GEMINI_PCI_MEM_BASE 0x58000000
|
||||
#define GEMINI_TOE_BASE 0x60000000
|
||||
#define GEMINI_GMAC0_BASE 0x6000A000
|
||||
#define GEMINI_GMAC1_BASE 0x6000E000
|
||||
#define GEMINI_SECURITY_BASE 0x62000000
|
||||
#define GEMINI_IDE0_BASE 0x63000000
|
||||
#define GEMINI_IDE1_BASE 0x63400000
|
||||
#define GEMINI_RAID_BASE 0x64000000
|
||||
#define GEMINI_FLASH_CTRL_BASE 0x65000000
|
||||
#define GEMINI_DRAM_CTRL_BASE 0x66000000
|
||||
#define GEMINI_GENERAL_DMA_BASE 0x67000000
|
||||
#define GEMINI_USB0_BASE 0x68000000
|
||||
#define GEMINI_USB1_BASE 0x69000000
|
||||
#define GEMINI_BIG_ENDIAN_BASE 0x80000000
|
||||
|
||||
#define GEMINI_TIMER1_BASE GEMINI_TIMER_BASE
|
||||
#define GEMINI_TIMER2_BASE (GEMINI_TIMER_BASE + 0x10)
|
||||
#define GEMINI_TIMER3_BASE (GEMINI_TIMER_BASE + 0x20)
|
||||
|
||||
/*
|
||||
* UART Clock when System clk is 150MHz
|
||||
*/
|
||||
#define UART_CLK 48000000
|
||||
|
||||
/*
|
||||
* macro to get at IO space when running virtually
|
||||
*/
|
||||
#define IO_ADDRESS(x) ((((x) & 0xFFF00000) >> 4) | ((x) & 0x000FFFFF) | 0xF0000000)
|
||||
|
||||
#endif
|
||||
18
arch/arm/mach-gemini/include/mach/io.h
Normal file
18
arch/arm/mach-gemini/include/mach/io.h
Normal file
|
|
@ -0,0 +1,18 @@
|
|||
/*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#ifndef __MACH_IO_H
|
||||
#define __MACH_IO_H
|
||||
|
||||
#define IO_SPACE_LIMIT 0xffffffff
|
||||
|
||||
#define __io(a) __typesafe_io(a)
|
||||
#define __mem_pci(a) (a)
|
||||
|
||||
#endif /* __MACH_IO_H */
|
||||
50
arch/arm/mach-gemini/include/mach/irqs.h
Normal file
50
arch/arm/mach-gemini/include/mach/irqs.h
Normal file
|
|
@ -0,0 +1,50 @@
|
|||
/*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __MACH_IRQS_H__
|
||||
#define __MACH_IRQS_H__
|
||||
|
||||
#define IRQ_SERIRQ1 31
|
||||
#define IRQ_SERIRQ0 30
|
||||
#define IRQ_PCID 29
|
||||
#define IRQ_PCIC 28
|
||||
#define IRQ_PCIB 27
|
||||
#define IRQ_PWR 26
|
||||
#define IRQ_CIR 25
|
||||
#define IRQ_GPIO(x) (22 + (x))
|
||||
#define IRQ_SSP 21
|
||||
#define IRQ_LPC 20
|
||||
#define IRQ_LCD 19
|
||||
#define IRQ_UART 18
|
||||
#define IRQ_RTC 17
|
||||
#define IRQ_TIMER3 16
|
||||
#define IRQ_TIMER2 15
|
||||
#define IRQ_TIMER1 14
|
||||
#define IRQ_FLASH 12
|
||||
#define IRQ_USB1 11
|
||||
#define IRQ_USB0 10
|
||||
#define IRQ_DMA 9
|
||||
#define IRQ_PCI 8
|
||||
#define IRQ_IPSEC 7
|
||||
#define IRQ_RAID 6
|
||||
#define IRQ_IDE1 5
|
||||
#define IRQ_IDE0 4
|
||||
#define IRQ_WATCHDOG 3
|
||||
#define IRQ_GMAC1 2
|
||||
#define IRQ_GMAC0 1
|
||||
#define IRQ_IPI 0
|
||||
|
||||
#define NORMAL_IRQ_NUM 32
|
||||
|
||||
#define ARCH_TIMER_IRQ IRQ_TIMER2
|
||||
|
||||
#define NR_IRQS NORMAL_IRQ_NUM
|
||||
|
||||
#endif /* __MACH_IRQS_H__ */
|
||||
19
arch/arm/mach-gemini/include/mach/memory.h
Normal file
19
arch/arm/mach-gemini/include/mach/memory.h
Normal file
|
|
@ -0,0 +1,19 @@
|
|||
/*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#ifndef __MACH_MEMORY_H
|
||||
#define __MACH_MEMORY_H
|
||||
|
||||
#ifdef CONFIG_GEMINI_MEM_SWAP
|
||||
# define PHYS_OFFSET UL(0x00000000)
|
||||
#else
|
||||
# define PHYS_OFFSET UL(0x10000000)
|
||||
#endif
|
||||
|
||||
#endif /* __MACH_MEMORY_H */
|
||||
37
arch/arm/mach-gemini/include/mach/system.h
Normal file
37
arch/arm/mach-gemini/include/mach/system.h
Normal file
|
|
@ -0,0 +1,37 @@
|
|||
/*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#ifndef __MACH_SYSTEM_H
|
||||
#define __MACH_SYSTEM_H
|
||||
|
||||
#include <linux/io.h>
|
||||
#include <mach/hardware.h>
|
||||
#include <mach/global_reg.h>
|
||||
|
||||
static inline void arch_idle(void)
|
||||
{
|
||||
/*
|
||||
* Because of broken hardware we have to enable interrupts or the CPU
|
||||
* will never wakeup... Acctualy it is not very good to enable
|
||||
* interrupts here since scheduler can miss a tick, but there is
|
||||
* no other way around this. Platforms that needs it for power saving
|
||||
* should call enable_hlt() in init code, since by default it is
|
||||
* disabled.
|
||||
*/
|
||||
local_irq_enable();
|
||||
cpu_do_idle();
|
||||
}
|
||||
|
||||
static inline void arch_reset(char mode)
|
||||
{
|
||||
__raw_writel(RESET_GLOBAL | RESET_CPU1,
|
||||
IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_RESET);
|
||||
}
|
||||
|
||||
#endif /* __MACH_SYSTEM_H */
|
||||
13
arch/arm/mach-gemini/include/mach/timex.h
Normal file
13
arch/arm/mach-gemini/include/mach/timex.h
Normal file
|
|
@ -0,0 +1,13 @@
|
|||
/*
|
||||
* Gemini timex specifications
|
||||
*
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
/* When AHB bus frequency is 150MHz */
|
||||
#define CLOCK_TICK_RATE 38000000
|
||||
42
arch/arm/mach-gemini/include/mach/uncompress.h
Normal file
42
arch/arm/mach-gemini/include/mach/uncompress.h
Normal file
|
|
@ -0,0 +1,42 @@
|
|||
/*
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* Based on mach-pxa/include/mach/uncompress.h:
|
||||
* Copyright: (C) 2001 MontaVista Software Inc.
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#ifndef __MACH_UNCOMPRESS_H
|
||||
#define __MACH_UNCOMPRESS_H
|
||||
|
||||
#include <linux/serial_reg.h>
|
||||
#include <mach/hardware.h>
|
||||
|
||||
static volatile unsigned long *UART = (unsigned long *)GEMINI_UART_BASE;
|
||||
|
||||
/*
|
||||
* The following code assumes the serial port has already been
|
||||
* initialized by the bootloader. If you didn't setup a port in
|
||||
* your bootloader then nothing will appear (which might be desired).
|
||||
*/
|
||||
static inline void putc(char c)
|
||||
{
|
||||
while (!(UART[UART_LSR] & UART_LSR_THRE))
|
||||
barrier();
|
||||
UART[UART_TX] = c;
|
||||
}
|
||||
|
||||
#define flush() do { } while (0)
|
||||
|
||||
/*
|
||||
* nothing to do
|
||||
*/
|
||||
#define arch_decomp_setup()
|
||||
|
||||
#define arch_decomp_wdog()
|
||||
|
||||
#endif /* __MACH_UNCOMPRESS_H */
|
||||
10
arch/arm/mach-gemini/include/mach/vmalloc.h
Normal file
10
arch/arm/mach-gemini/include/mach/vmalloc.h
Normal file
|
|
@ -0,0 +1,10 @@
|
|||
/*
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
|
||||
#define VMALLOC_END 0xF0000000
|
||||
102
arch/arm/mach-gemini/irq.c
Normal file
102
arch/arm/mach-gemini/irq.c
Normal file
|
|
@ -0,0 +1,102 @@
|
|||
/*
|
||||
* Interrupt routines for Gemini
|
||||
*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#include <linux/init.h>
|
||||
#include <linux/io.h>
|
||||
#include <linux/ioport.h>
|
||||
#include <linux/stddef.h>
|
||||
#include <linux/list.h>
|
||||
#include <linux/sched.h>
|
||||
#include <asm/irq.h>
|
||||
#include <asm/mach/irq.h>
|
||||
#include <mach/hardware.h>
|
||||
|
||||
#define IRQ_SOURCE(base_addr) (base_addr + 0x00)
|
||||
#define IRQ_MASK(base_addr) (base_addr + 0x04)
|
||||
#define IRQ_CLEAR(base_addr) (base_addr + 0x08)
|
||||
#define IRQ_TMODE(base_addr) (base_addr + 0x0C)
|
||||
#define IRQ_TLEVEL(base_addr) (base_addr + 0x10)
|
||||
#define IRQ_STATUS(base_addr) (base_addr + 0x14)
|
||||
#define FIQ_SOURCE(base_addr) (base_addr + 0x20)
|
||||
#define FIQ_MASK(base_addr) (base_addr + 0x24)
|
||||
#define FIQ_CLEAR(base_addr) (base_addr + 0x28)
|
||||
#define FIQ_TMODE(base_addr) (base_addr + 0x2C)
|
||||
#define FIQ_LEVEL(base_addr) (base_addr + 0x30)
|
||||
#define FIQ_STATUS(base_addr) (base_addr + 0x34)
|
||||
|
||||
static void gemini_ack_irq(unsigned int irq)
|
||||
{
|
||||
__raw_writel(1 << irq, IRQ_CLEAR(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
}
|
||||
|
||||
static void gemini_mask_irq(unsigned int irq)
|
||||
{
|
||||
unsigned int mask;
|
||||
|
||||
mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
mask &= ~(1 << irq);
|
||||
__raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
}
|
||||
|
||||
static void gemini_unmask_irq(unsigned int irq)
|
||||
{
|
||||
unsigned int mask;
|
||||
|
||||
mask = __raw_readl(IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
mask |= (1 << irq);
|
||||
__raw_writel(mask, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
}
|
||||
|
||||
static struct irq_chip gemini_irq_chip = {
|
||||
.name = "INTC",
|
||||
.ack = gemini_ack_irq,
|
||||
.mask = gemini_mask_irq,
|
||||
.unmask = gemini_unmask_irq,
|
||||
};
|
||||
|
||||
static struct resource irq_resource = {
|
||||
.name = "irq_handler",
|
||||
.start = IO_ADDRESS(GEMINI_INTERRUPT_BASE),
|
||||
.end = IO_ADDRESS(FIQ_STATUS(GEMINI_INTERRUPT_BASE)) + 4,
|
||||
};
|
||||
|
||||
void __init gemini_init_irq(void)
|
||||
{
|
||||
unsigned int i, mode = 0, level = 0;
|
||||
|
||||
/*
|
||||
* Disable arch_idle() by default since it is buggy
|
||||
* For more info see arch/arm/mach-gemini/include/mach/system.h
|
||||
*/
|
||||
disable_hlt();
|
||||
|
||||
request_resource(&iomem_resource, &irq_resource);
|
||||
|
||||
for (i = 0; i < NR_IRQS; i++) {
|
||||
set_irq_chip(i, &gemini_irq_chip);
|
||||
if((i >= IRQ_TIMER1 && i <= IRQ_TIMER3) || (i >= IRQ_SERIRQ0 && i <= IRQ_SERIRQ1)) {
|
||||
set_irq_handler(i, handle_edge_irq);
|
||||
mode |= 1 << i;
|
||||
level |= 1 << i;
|
||||
} else {
|
||||
set_irq_handler(i, handle_level_irq);
|
||||
}
|
||||
set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
|
||||
}
|
||||
|
||||
/* Disable all interrupts */
|
||||
__raw_writel(0, IRQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
__raw_writel(0, FIQ_MASK(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
|
||||
/* Set interrupt mode */
|
||||
__raw_writel(mode, IRQ_TMODE(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
__raw_writel(level, IRQ_TLEVEL(IO_ADDRESS(GEMINI_INTERRUPT_BASE)));
|
||||
}
|
||||
82
arch/arm/mach-gemini/mm.c
Normal file
82
arch/arm/mach-gemini/mm.c
Normal file
|
|
@ -0,0 +1,82 @@
|
|||
/*
|
||||
* Static mappings for Gemini
|
||||
*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#include <linux/mm.h>
|
||||
#include <linux/init.h>
|
||||
|
||||
#include <asm/mach/map.h>
|
||||
|
||||
#include <mach/hardware.h>
|
||||
|
||||
/* Page table mapping for I/O region */
|
||||
static struct map_desc gemini_io_desc[] __initdata = {
|
||||
{
|
||||
.virtual = IO_ADDRESS(GEMINI_GLOBAL_BASE),
|
||||
.pfn =__phys_to_pfn(GEMINI_GLOBAL_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_UART_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_UART_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_TIMER_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_TIMER_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_INTERRUPT_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_INTERRUPT_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_POWER_CTRL_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_POWER_CTRL_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_GPIO_BASE(0)),
|
||||
.pfn = __phys_to_pfn(GEMINI_GPIO_BASE(0)),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_GPIO_BASE(1)),
|
||||
.pfn = __phys_to_pfn(GEMINI_GPIO_BASE(1)),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_GPIO_BASE(2)),
|
||||
.pfn = __phys_to_pfn(GEMINI_GPIO_BASE(2)),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_FLASH_CTRL_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_FLASH_CTRL_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_DRAM_CTRL_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_DRAM_CTRL_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
}, {
|
||||
.virtual = IO_ADDRESS(GEMINI_GENERAL_DMA_BASE),
|
||||
.pfn = __phys_to_pfn(GEMINI_GENERAL_DMA_BASE),
|
||||
.length = SZ_512K,
|
||||
.type = MT_DEVICE,
|
||||
},
|
||||
};
|
||||
|
||||
void __init gemini_map_io(void)
|
||||
{
|
||||
iotable_init(gemini_io_desc, ARRAY_SIZE(gemini_io_desc));
|
||||
}
|
||||
89
arch/arm/mach-gemini/time.c
Normal file
89
arch/arm/mach-gemini/time.c
Normal file
|
|
@ -0,0 +1,89 @@
|
|||
/*
|
||||
* Copyright (C) 2001-2006 Storlink, Corp.
|
||||
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
|
||||
*
|
||||
* 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.
|
||||
*/
|
||||
#include <linux/interrupt.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/io.h>
|
||||
#include <mach/hardware.h>
|
||||
#include <mach/global_reg.h>
|
||||
#include <asm/mach/time.h>
|
||||
|
||||
/*
|
||||
* Register definitions for the timers
|
||||
*/
|
||||
#define TIMER_COUNT(BASE_ADDR) (BASE_ADDR + 0x00)
|
||||
#define TIMER_LOAD(BASE_ADDR) (BASE_ADDR + 0x04)
|
||||
#define TIMER_MATCH1(BASE_ADDR) (BASE_ADDR + 0x08)
|
||||
#define TIMER_MATCH2(BASE_ADDR) (BASE_ADDR + 0x0C)
|
||||
#define TIMER_CR(BASE_ADDR) (BASE_ADDR + 0x30)
|
||||
|
||||
#define TIMER_1_CR_ENABLE (1 << 0)
|
||||
#define TIMER_1_CR_CLOCK (1 << 1)
|
||||
#define TIMER_1_CR_INT (1 << 2)
|
||||
#define TIMER_2_CR_ENABLE (1 << 3)
|
||||
#define TIMER_2_CR_CLOCK (1 << 4)
|
||||
#define TIMER_2_CR_INT (1 << 5)
|
||||
#define TIMER_3_CR_ENABLE (1 << 6)
|
||||
#define TIMER_3_CR_CLOCK (1 << 7)
|
||||
#define TIMER_3_CR_INT (1 << 8)
|
||||
|
||||
/*
|
||||
* IRQ handler for the timer
|
||||
*/
|
||||
static irqreturn_t gemini_timer_interrupt(int irq, void *dev_id)
|
||||
{
|
||||
timer_tick();
|
||||
|
||||
return IRQ_HANDLED;
|
||||
}
|
||||
|
||||
static struct irqaction gemini_timer_irq = {
|
||||
.name = "Gemini Timer Tick",
|
||||
.flags = IRQF_DISABLED | IRQF_TIMER,
|
||||
.handler = gemini_timer_interrupt,
|
||||
};
|
||||
|
||||
/*
|
||||
* Set up timer interrupt, and return the current time in seconds.
|
||||
*/
|
||||
void __init gemini_timer_init(void)
|
||||
{
|
||||
unsigned int tick_rate, reg_v;
|
||||
|
||||
reg_v = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE + GLOBAL_STATUS));
|
||||
tick_rate = REG_TO_AHB_SPEED(reg_v) * 1000000;
|
||||
|
||||
printk(KERN_INFO "Bus: %dMHz", tick_rate / 1000000);
|
||||
|
||||
tick_rate /= 6; /* APB bus run AHB*(1/6) */
|
||||
|
||||
switch(reg_v & CPU_AHB_RATIO_MASK) {
|
||||
case CPU_AHB_1_1:
|
||||
printk(KERN_CONT "(1/1)\n");
|
||||
break;
|
||||
case CPU_AHB_3_2:
|
||||
printk(KERN_CONT "(3/2)\n");
|
||||
break;
|
||||
case CPU_AHB_24_13:
|
||||
printk(KERN_CONT "(24/13)\n");
|
||||
break;
|
||||
case CPU_AHB_2_1:
|
||||
printk(KERN_CONT "(2/1)\n");
|
||||
break;
|
||||
}
|
||||
|
||||
/*
|
||||
* Make irqs happen for the system timer
|
||||
*/
|
||||
setup_irq(IRQ_TIMER2, &gemini_timer_irq);
|
||||
/* Start the timer */
|
||||
__raw_writel(tick_rate / HZ, TIMER_COUNT(IO_ADDRESS(GEMINI_TIMER2_BASE)));
|
||||
__raw_writel(tick_rate / HZ, TIMER_LOAD(IO_ADDRESS(GEMINI_TIMER2_BASE)));
|
||||
__raw_writel(TIMER_2_CR_ENABLE | TIMER_2_CR_INT, TIMER_CR(IO_ADDRESS(GEMINI_TIMER_BASE)));
|
||||
}
|
||||
Loading…
Reference in a new issue