Commit 59d3a193 authored by Paulius Zaleckas's avatar Paulius Zaleckas

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: default avatarPaulius Zaleckas <paulius.zaleckas@teltonika.lt>
parent 6a915af9
......@@ -275,6 +275,12 @@ config ARCH_EP93XX
help
This enables support for the Cirrus EP93xx series of CPUs.
config ARCH_GEMINI
bool "Cortina Systems Gemini"
select CPU_FA526
help
Support for the Cortina Systems Gemini family SoCs
config ARCH_FOOTBRIDGE
bool "FootBridge"
select CPU_SA110
......@@ -598,6 +604,8 @@ source "arch/arm/mach-ep93xx/Kconfig"
source "arch/arm/mach-footbridge/Kconfig"
source "arch/arm/mach-gemini/Kconfig"
source "arch/arm/mach-integrator/Kconfig"
source "arch/arm/mach-iop32x/Kconfig"
......
......@@ -108,6 +108,7 @@ endif
machine-$(CONFIG_ARCH_PXA) := pxa
machine-$(CONFIG_ARCH_L7200) := l7200
machine-$(CONFIG_ARCH_INTEGRATOR) := integrator
machine-$(CONFIG_ARCH_GEMINI) := gemini
textofs-$(CONFIG_ARCH_CLPS711X) := 0x00028000
machine-$(CONFIG_ARCH_CLPS711X) := clps711x
machine-$(CONFIG_ARCH_IOP32X) := iop32x
......
if ARCH_GEMINI
menu "Cortina Systems Gemini Implementations"
endmenu
config GEMINI_MEM_SWAP
bool "Gemini memory is swapped"
help
Say Y here if Gemini memory is swapped by bootloader.
endif
#
# Makefile for the linux kernel.
#
# Object file lists.
obj-y := irq.o mm.o time.o devices.o
ifeq ($(CONFIG_GEMINI_MEM_SWAP),y)
zreladdr-y := 0x00008000
params_phys-y := 0x00000100
initrd_phys-y := 0x00800000
else
zreladdr-y := 0x10008000
params_phys-y := 0x10000100
initrd_phys-y := 0x10800000
endif
/*
* Common Gemini architecture functions
*
* 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 __GEMINI_COMMON_H__
#define __GEMINI_COMMON_H__
struct mtd_partition;
extern void gemini_map_io(void);
extern void gemini_init_irq(void);
extern void gemini_timer_init(void);
/* Common platform devices registration functions */
extern int platform_register_uart(void);
extern int platform_register_pflash(unsigned int size,
struct mtd_partition *parts,
unsigned int nr_parts);
#endif /* __GEMINI_COMMON_H__ */
/*
* Common devices definition for Gemini
*
* 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 version 2 as
* published by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/mtd/physmap.h>
#include <mach/irqs.h>
#include <mach/hardware.h>
#include <mach/global_reg.h>
static struct plat_serial8250_port serial_platform_data[] = {
{
.membase = (void *)IO_ADDRESS(GEMINI_UART_BASE),
.mapbase = GEMINI_UART_BASE,
.irq = IRQ_UART,
.uartclk = UART_CLK,
.regshift = 2,
.iotype = UPIO_MEM,
.type = PORT_16550A,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_FIXED_TYPE,
},
{},
};
static struct platform_device serial_device = {
.name = "serial8250",
.id = PLAT8250_DEV_PLATFORM,
.dev = {
.platform_data = serial_platform_data,
},
};
int platform_register_uart(void)
{
return platform_device_register(&serial_device);
}
static struct resource flash_resource = {
.start = GEMINI_FLASH_BASE,
.flags = IORESOURCE_MEM,
};
static struct physmap_flash_data pflash_platform_data = {};
static struct platform_device pflash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &pflash_platform_data,
},
.resource = &flash_resource,
.num_resources = 1,
};
int platform_register_pflash(unsigned int size, struct mtd_partition *parts,
unsigned int nr_parts)
{
unsigned int reg;
reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_STATUS);
if ((reg & FLASH_TYPE_MASK) != FLASH_TYPE_PARALLEL)
return -ENXIO;
if (reg & FLASH_WIDTH_16BIT)
pflash_platform_data.width = 2;
else
pflash_platform_data.width = 1;
/* enable parallel flash pins and disable others */
reg = __raw_readl(IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
reg &= ~PFLASH_PADS_DISABLE;
reg |= SFLASH_PADS_DISABLE | NAND_PADS_DISABLE;
__raw_writel(reg, IO_ADDRESS(GEMINI_GLOBAL_BASE) + GLOBAL_MISC_CTRL);
flash_resource.end = flash_resource.start + size - 1;
pflash_platform_data.parts = parts;
pflash_platform_data.nr_parts = nr_parts;
return platform_device_register(&pflash_device);
}
/*
* Debugging macro include header
*
* Copyright (C) 1994-1999 Russell King
* 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 version 2 as
* published by the Free Software Foundation.
*/
#include <mach/hardware.h>
.macro addruart,rx
mrc p15, 0, \rx, c1, c0
tst \rx, #1 @ MMU enabled?
ldreq \rx, =GEMINI_UART_BASE @ physical
ldrne \rx, =IO_ADDRESS(GEMINI_UART_BASE) @ virtual
.endm
#define UART_SHIFT 2
#define FLOW_CONTROL
#include <asm/hardware/debug-8250.S>
/*
* Low-level IRQ helper macros for Gemini platform.
*
* Copyright (C) 2001-2006 Storlink, Corp.
* Copyright (C) 2008-2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <mach/hardware.h>
#define IRQ_STATUS 0x14
.macro disable_fiq
.endm
.macro get_irqnr_preamble, base, tmp
.endm
.macro arch_ret_to_user, tmp1, tmp2
.endm
.macro get_irqnr_and_base, irqnr, irqstat, base, tmp
ldr \irqstat, =IO_ADDRESS(GEMINI_INTERRUPT_BASE + IRQ_STATUS)
ldr \irqnr, [\irqstat]
cmp \irqnr, #0
beq 2313f
mov \tmp, \irqnr
mov \irqnr, #0
2312:
tst \tmp, #1
bne 2313f
add \irqnr, \irqnr, #1
mov \tmp, \tmp, lsr #1
cmp \irqnr, #31
bcc 2312b
2313:
.endm
/*
* This file contains the hardware definitions for Gemini.
*
* Copyright (C) 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_GLOBAL_REG_H
#define __MACH_GLOBAL_REG_H
/* Global Word ID Register*/
#define GLOBAL_ID 0x00
#define CHIP_ID(reg) ((reg) >> 8)
#define CHIP_REVISION(reg) ((reg) & 0xFF)
/* Global Status Register */
#define GLOBAL_STATUS 0x04
#define CPU_BIG_ENDIAN (1 << 31)
#define PLL_OSC_30M (1 << 30) /* else 60MHz */
#define OPERATION_MODE_MASK (0xF << 26)
#define OPM_IDDQ (0xF << 26)
#define OPM_NAND (0xE << 26)
#define OPM_RING (0xD << 26)
#define OPM_DIRECT_BOOT (0xC << 26)
#define OPM_USB1_PHY_TEST (0xB << 26)
#define OPM_USB0_PHY_TEST (0xA << 26)
#define OPM_SATA1_PHY_TEST (0x9 << 26)
#define OPM_SATA0_PHY_TEST (0x8 << 26)
#define OPM_ICE_ARM (0x7 << 26)
#define OPM_ICE_FARADAY (0x6 << 26)
#define OPM_PLL_BYPASS (0x5 << 26)
#define OPM_DEBUG (0x4 << 26)
#define OPM_BURN_IN (0x3 << 26)
#define OPM_MBIST (0x2 << 26)
#define OPM_SCAN (0x1 << 26)
#define OPM_REAL (0x0 << 26)
#define FLASH_TYPE_MASK (0x3 << 24)
#define FLASH_TYPE_NAND_2K (0x3 << 24)
#define FLASH_TYPE_NAND_512 (0x2 << 24)
#define FLASH_TYPE_PARALLEL (0x1 << 24)
#define FLASH_TYPE_SERIAL (0x0 << 24)
/* if parallel */
#define FLASH_WIDTH_16BIT (1 << 23) /* else 8 bit */
/* if serial */
#define FLASH_ATMEL (1 << 23) /* else STM */
#define FLASH_SIZE_MASK (0x3 << 21)
#define NAND_256M (0x3 << 21) /* and more */
#define NAND_128M (0x2 << 21)
#define NAND_64M (0x1 << 21)
#define NAND_32M (0x0 << 21)
#define ATMEL_16M (0x3 << 21) /* and more */
#define ATMEL_8M (0x2 << 21)
#define ATMEL_4M_2M (0x1 << 21)
#define ATMEL_1M (0x0 << 21) /* and less */
#define STM_32M (1 << 22) /* and more */
#define STM_16M (0 << 22) /* and less */
#define FLASH_PARALLEL_HIGH_PIN_CNT (1 << 20) /* else low pin cnt */
#define CPU_AHB_RATIO_MASK (0x3 << 18)
#define CPU_AHB_1_1 (0x0 << 18)
#define CPU_AHB_3_2 (0x1 << 18)
#define CPU_AHB_24_13 (0x2 << 18)
#define CPU_AHB_2_1 (0x3 << 18)
#define REG_TO_AHB_SPEED(reg) ((((reg) >> 15) & 0x7) * 10 + 130)
#define AHB_SPEED_TO_REG(x) ((((x - 130)) / 10) << 15)
/* it is posible to override some settings, use >> OVERRIDE_xxxx_SHIFT */
#define OVERRIDE_FLASH_TYPE_SHIFT 16
#define OVERRIDE_FLASH_WIDTH_SHIFT 16
#define OVERRIDE_FLASH_SIZE_SHIFT 16
#define OVERRIDE_CPU_AHB_RATIO_SHIFT 15
#define OVERRIDE_AHB_SPEED_SHIFT 15
/* Global PLL Control Register */
#define GLOBAL_PLL_CTRL 0x08
#define PLL_BYPASS (1 << 31)
#define PLL_POWER_DOWN (1 << 8)
#define PLL_CONTROL_Q (0x1F << 0)
/* Global Soft Reset Control Register */
#define GLOBAL_RESET 0x0C
#define RESET_GLOBAL (1 << 31)
#define RESET_CPU1 (1 << 30)
#define RESET_TVE (1 << 28)
#define RESET_SATA1 (1 << 27)
#define RESET_SATA0 (1 << 26)
#define RESET_CIR (1 << 25)
#define RESET_EXT_DEV (1 << 24)
#define RESET_WD (1 << 23)
#define RESET_GPIO2 (1 << 22)
#define RESET_GPIO1 (1 << 21)
#define RESET_GPIO0 (1 << 20)
#define RESET_SSP (1 << 19)
#define RESET_UART (1 << 18)
#define RESET_TIMER (1 << 17)
#define RESET_RTC (1 << 16)
#define RESET_INT1 (1 << 15)
#define RESET_INT0 (1 << 14)
#define RESET_LCD (1 << 13)
#define RESET_LPC (1 << 12)
#define RESET_APB (1 << 11)
#define RESET_DMA (1 << 10)
#define RESET_USB1 (1 << 9)
#define RESET_USB0 (1 << 8)
#define RESET_PCI (1 << 7)
#define RESET_GMAC1 (1 << 6)
#define RESET_GMAC0 (1 << 5)
#define RESET_SECURITY (1 << 4)
#define RESET_RAID (1 << 3)
#define RESET_IDE (1 << 2)
#define RESET_FLASH (1 << 1)
#define RESET_DRAM (1 << 0)
/* Global IO Pad Driving Capability Control Register */
#define GLOBAL_IO_DRIVING_CTRL 0x10
#define DRIVING_CURRENT_MASK 0x3
/* here 00-4mA, 01-8mA, 10-12mA, 11-16mA */
#define GPIO1_PADS_31_28_SHIFT 28
#define GPIO0_PADS_31_16_SHIFT 26
#define GPIO0_PADS_15_0_SHIFT 24
#define PCI_AND_EXT_RESET_PADS_SHIFT 22
#define IDE_PADS_SHIFT 20
#define GMAC1_PADS_SHIFT 18
#define GMAC0_PADS_SHIFT 16
/* DRAM is not in mA and poorly documented */
#define DRAM_CLOCK_PADS_SHIFT 8
#define DRAM_DATA_PADS_SHIFT 4
#define DRAM_CONTROL_PADS_SHIFT 0
/* Global IO Pad Slew Rate Control Register */
#define GLOBAL_IO_SLEW_RATE_CTRL 0x14
#define GPIO1_PADS_31_28_SLOW (1 << 10)
#define GPIO0_PADS_31_16_SLOW (1 << 9)
#define GPIO0_PADS_15_0_SLOW (1 << 8)
#define PCI_PADS_SLOW (1 << 7)
#define IDE_PADS_SLOW (1 << 6)
#define GMAC1_PADS_SLOW (1 << 5)
#define GMAC0_PADS_SLOW (1 << 4)
#define DRAM_CLOCK_PADS_SLOW (1 << 1)
#define DRAM_IO_PADS_SLOW (1 << 0)
/*
* General skew control defines
* 16 steps, each step is around 0.2ns
*/
#define SKEW_MASK 0xF
/* 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 */
/*
* 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
/*
* 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 */
/*
* 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__ */
/*
* 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 */
/*
* 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 */
/*
* 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
/*
* 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 */
/*
* 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
/*
* 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)));
}
/*
* 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));
}
/*
* 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)));
}
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