[ARM PATCH] 2434/1: Adds new machine: ixp4xx based gtwx5715

Patch from George Joseph

Machine number 641 already assigned.
Changes...
arch/arm/boot/compressed/head-xscale.S
arch/arm/mach-ixp4xx/Kconfig
arch/arm/mach-ixp4xx/Makefile
include/asm-arm/arch-ixp4xx/uncompress.h
Adds...
arch/arm/mach-ixp4xx/gtwx5715-pci.c
arch/arm/mach-ixp4xx/gtwx5715-setup.c
include/asm-arm/arch-ixp4xx/gtwx5715.h
Includes changes requested by Russell King

Signed-off-by: George T Joseph
Signed-off-by: Deepak Saxena
Signed-off-by: Russell King

arch/arm/boot/compressed/head-xscale.S

@@ -42,3 +42,8 @@ __XScale_start:
 		mov	r7, #MACH_TYPE_COTULLA_IDP
 #endif
 
+#ifdef  CONFIG_MACH_GTWX5715
+               mov     r7, #(MACH_TYPE_GTWX5715 & 0xff)
+               orr     r7, r7, #(MACH_TYPE_GTWX5715 & 0xff00)
+#endif
+

arch/arm/mach-ixp4xx/Kconfig

@@ -77,6 +77,24 @@ config CPU_IXP46X
 	depends on MACH_IXDP465
 	default y
 
+config MACH_GTWX5715
+	bool "Gemtek WX5715 (Linksys WRV54G)"
+	depends on ARCH_IXP4XX
+	help
+		This board is currently inside the Linksys WRV54G Gateways.
+
+		IXP425 - 266mhz
+		32mb SDRAM
+		8mb Flash
+		miniPCI slot 0 does not have a card connector soldered to the board
+		miniPCI slot 1 has an ISL3880 802.11g card (Prism54)
+		npe0 is connected to a Kendin KS8995M Switch (4 ports)
+		npe1 is the "wan" port
+		"Console" UART is available on J11 as console
+		"High Speed" UART is n/c (as far as I can tell)
+		20 Pin ARM/Xscale JTAG interface on J2
+
+
 comment "IXP4xx Options"
 
 config IXP4XX_INDIRECT_PCI

arch/arm/mach-ixp4xx/Makefile

@@ -8,4 +8,5 @@ obj-$(CONFIG_ARCH_IXDP4XX)	+= ixdp425-pci.o ixdp425-setup.o
 obj-$(CONFIG_MACH_IXDPG425)	+= ixdpg425-pci.o coyote-setup.o
 obj-$(CONFIG_ARCH_ADI_COYOTE)	+= coyote-pci.o coyote-setup.o
 obj-$(CONFIG_ARCH_PRPMC1100)	+= prpmc1100-pci.o prpmc1100-setup.o
+obj-$(CONFIG_MACH_GTWX5715)	+= gtwx5715-pci.o gtwx5715-setup.o
 

arch/arm/mach-ixp4xx/gtwx5715-pci.c

+/*
+ * arch/arm/mach-ixp4xx/gtwx5715-pci.c
+ *
+ * Gemtek GTWX5715 (Linksys WRV54G) board setup
+ *
+ * Copyright (C) 2004 George T. Joseph
+ * Derived from Coyote
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#include <linux/pci.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <asm/mach-types.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/arch/gtwx5715.h>
+#include <asm/mach/pci.h>
+
+extern void ixp4xx_pci_preinit(void);
+extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
+extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
+
+        /*
+        * The exact GPIO pins and IRQs are defined in arch-ixp4xx/gtwx5715.h
+        * Slot 0 isn't actually populated with a card connector but
+        * we initialize it anyway in case a future version has the
+        * slot populated or someone with good soldering skills has
+        * some free time.
+        */
+
+
+static void gtwx5715_init_gpio(u8 pin, u32 style)
+{
+	gpio_line_config(pin, style | IXP4XX_GPIO_ACTIVE_LOW);
+
+	if (style & IXP4XX_GPIO_IN) gpio_line_isr_clear(pin);
+}
+
+void __init gtwx5715_pci_preinit(void)
+{
+	gtwx5715_init_gpio(GTWX5715_PCI_SLOT0_INTA_GPIO,	IXP4XX_GPIO_IN);
+	gtwx5715_init_gpio(GTWX5715_PCI_SLOT1_INTA_GPIO,	IXP4XX_GPIO_IN);
+
+	ixp4xx_pci_preinit();
+}
+
+
+static int __init gtwx5715_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
+{
+	int rc;
+	static int gtwx5715_irqmap
+			[GTWX5715_PCI_SLOT_COUNT]
+			[GTWX5715_PCI_INT_PIN_COUNT] = {
+	{GTWX5715_PCI_SLOT0_INTA_IRQ, GTWX5715_PCI_SLOT0_INTB_IRQ},
+	{GTWX5715_PCI_SLOT1_INTA_IRQ, GTWX5715_PCI_SLOT1_INTB_IRQ},
+};
+
+	if (slot >= GTWX5715_PCI_SLOT_COUNT ||
+			pin >= GTWX5715_PCI_INT_PIN_COUNT) rc = -1;
+	else
+		rc = gtwx5715_irqmap[slot][pin-1];
+
+	printk("%s: Mapped slot %d pin %d to IRQ %d\n", __FUNCTION__,slot, pin, rc);
+	return(rc);
+}
+
+struct hw_pci gtwx5715_pci __initdata = {
+	.nr_controllers = 1,
+	.preinit =        gtwx5715_pci_preinit,
+	.swizzle =        pci_std_swizzle,
+	.setup =          ixp4xx_setup,
+	.scan =           ixp4xx_scan_bus,
+	.map_irq =        gtwx5715_map_irq,
+};
+
+int __init gtwx5715_pci_init(void)
+{
+	if (machine_is_gtwx5715())
+	{
+		pci_common_init(&gtwx5715_pci);
+	}
+
+	return 0;
+}
+
+subsys_initcall(gtwx5715_pci_init);

arch/arm/mach-ixp4xx/gtwx5715-setup.c

+/*
+ * arch/arm/mach-ixp4xx/gtwx5715-setup.c
+ *
+ * Gemtek GTWX5715 (Linksys WRV54G) board settup
+ *
+ * Copyright (C) 2004 George T. Joseph
+ * Derived from Coyote
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/serial.h>
+#include <linux/tty.h>
+#include <linux/serial_8250.h>
+
+#include <asm/types.h>
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/flash.h>
+#include <asm/arch/gtwx5715.h>
+
+/*
+ * Xscale UART registers are 32 bits wide with only the least
+ * significant 8 bits having any meaning.  From a configuration
+ * perspective, this means 2 things...
+ *
+ *   Setting .regshift = 2 so that the standard 16550 registers
+ *   line up on every 4th byte.
+ *
+ *   Shifting the register start virtual address +3 bytes when
+ *   compiled big-endian.  Since register writes are done on a
+ *   single byte basis, if the shift isn't done the driver will
+ *   write the value into the most significant byte of the register,
+ *   which is ignored, instead of the least significant.
+ */
+
+#ifdef	__ARMEB__
+#define	REG_OFFSET	3
+#else
+#define	REG_OFFSET	0
+#endif
+
+/*
+ * Only the second or "console" uart is connected on the gtwx5715.
+ */
+
+static struct resource gtwx5715_uart_resources[] = {
+	{
+		.start	= IXP4XX_UART2_BASE_PHYS,
+		.end	= IXP4XX_UART2_BASE_PHYS + 0x0fff,
+		.flags	= IORESOURCE_MEM,
+	},
+	{
+		.start	= IRQ_IXP4XX_UART2,
+		.end	= IRQ_IXP4XX_UART2,
+		.flags	= IORESOURCE_IRQ,
+	},
+	{ },
+};
+
+
+static struct plat_serial8250_port gtwx5715_uart_platform_data[] = {
+	{
+	.mapbase	= IXP4XX_UART2_BASE_PHYS,
+	.membase	= (char *)IXP4XX_UART2_BASE_VIRT + REG_OFFSET,
+	.irq		= IRQ_IXP4XX_UART2,
+	.flags		= UPF_BOOT_AUTOCONF,
+	.iotype		= UPIO_MEM,
+	.regshift	= 2,
+	.uartclk	= IXP4XX_UART_XTAL,
+	},
+	{ },
+};
+
+static struct platform_device gtwx5715_uart_device = {
+	.name		= "serial8250",
+	.id		= 0,
+	.dev			= {
+		.platform_data	= gtwx5715_uart_platform_data,
+	},
+	.num_resources	= 2,
+	.resource	= gtwx5715_uart_resources,
+};
+
+
+void __init gtwx5715_map_io(void)
+{
+	ixp4xx_map_io();
+}
+
+static struct flash_platform_data gtwx5715_flash_data = {
+	.map_name	= "cfi_probe",
+	.width		= 2,
+};
+
+static struct resource gtwx5715_flash_resource = {
+	.start		= GTWX5715_FLASH_BASE,
+	.end		= GTWX5715_FLASH_BASE + GTWX5715_FLASH_SIZE,
+	.flags		= IORESOURCE_MEM,
+};
+
+static struct platform_device gtwx5715_flash = {
+	.name		= "IXP4XX-Flash",
+	.id		= 0,
+	.dev		= {
+		.platform_data = &gtwx5715_flash_data,
+	},
+	.num_resources	= 1,
+	.resource	= &gtwx5715_flash_resource,
+};
+
+static struct platform_device *gtwx5715_devices[] __initdata = {
+	&gtwx5715_uart_device,
+	&gtwx5715_flash,
+};
+
+static void __init gtwx5715_init(void)
+{
+	platform_add_devices(gtwx5715_devices, ARRAY_SIZE(gtwx5715_devices));
+}
+
+
+MACHINE_START(GTWX5715, "Gemtek GTWX5715 (Linksys WRV54G)")
+        MAINTAINER("George Joseph")
+        BOOT_MEM(PHYS_OFFSET, IXP4XX_UART2_BASE_PHYS,
+                IXP4XX_UART2_BASE_VIRT)
+        MAPIO(gtwx5715_map_io)
+        INITIRQ(ixp4xx_init_irq)
+		  .timer		= &ixp4xx_timer,
+        BOOT_PARAMS(0x0100)
+        INIT_MACHINE(gtwx5715_init)
+MACHINE_END
+
+

include/asm-arm/arch-ixp4xx/gtwx5715.h

+/*
+ * include/asm-arm/arch-ixp4xx/gtwx5715.h
+ *
+ * Gemtek GTWX5715 Gateway (Linksys WRV54G)
+ *
+ * Copyright 2004 (c) George T. Joseph
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#ifndef __ASM_ARCH_HARDWARE_H__
+#error "Do not include this directly, instead #include <asm/hardware.h>"
+#endif
+#include "irqs.h"
+
+#define GTWX5715_GPIO0	0
+#define GTWX5715_GPIO1	1
+#define GTWX5715_GPIO2	2
+#define GTWX5715_GPIO3	3
+#define GTWX5715_GPIO4	4
+#define GTWX5715_GPIO5	5
+#define GTWX5715_GPIO6	6
+#define GTWX5715_GPIO7	7
+#define GTWX5715_GPIO8	8
+#define GTWX5715_GPIO9	9
+#define GTWX5715_GPIO10	10
+#define GTWX5715_GPIO11	11
+#define GTWX5715_GPIO12	12
+#define GTWX5715_GPIO13	13
+#define GTWX5715_GPIO14	14
+
+#define GTWX5715_GPIO0_IRQ			IRQ_IXP4XX_GPIO0
+#define GTWX5715_GPIO1_IRQ			IRQ_IXP4XX_GPIO1
+#define GTWX5715_GPIO2_IRQ			IRQ_IXP4XX_GPIO2
+#define GTWX5715_GPIO3_IRQ			IRQ_IXP4XX_GPIO3
+#define GTWX5715_GPIO4_IRQ			IRQ_IXP4XX_GPIO4
+#define GTWX5715_GPIO5_IRQ			IRQ_IXP4XX_GPIO5
+#define GTWX5715_GPIO6_IRQ			IRQ_IXP4XX_GPIO6
+#define GTWX5715_GPIO7_IRQ			IRQ_IXP4XX_GPIO7
+#define GTWX5715_GPIO8_IRQ			IRQ_IXP4XX_GPIO8
+#define GTWX5715_GPIO9_IRQ			IRQ_IXP4XX_GPIO9
+#define GTWX5715_GPIO10_IRQ		IRQ_IXP4XX_GPIO10
+#define GTWX5715_GPIO11_IRQ		IRQ_IXP4XX_GPIO11
+#define GTWX5715_GPIO12_IRQ		IRQ_IXP4XX_GPIO12
+#define GTWX5715_GPIO13_IRQ		IRQ_IXP4XX_SW_INT1
+#define GTWX5715_GPIO14_IRQ		IRQ_IXP4XX_SW_INT2
+
+
+#define	GTWX5715_FLASH_BASE	IXP4XX_EXP_BUS_CS0_BASE_PHYS
+#define	GTWX5715_FLASH_SIZE	(0x00800000)
+
+/* PCI controller GPIO to IRQ pin mappings
+
+			INTA	INTB
+SLOT 0	10		11
+SLOT 1	11		10
+
+*/
+
+#define	GTWX5715_PCI_SLOT0_DEVID	0
+#define	GTWX5715_PCI_SLOT0_INTA_GPIO	GTWX5715_GPIO10
+#define	GTWX5715_PCI_SLOT0_INTB_GPIO	GTWX5715_GPIO11
+#define	GTWX5715_PCI_SLOT0_INTA_IRQ	GTWX5715_GPIO10_IRQ
+#define	GTWX5715_PCI_SLOT0_INTB_IRQ	GTWX5715_GPIO11_IRQ
+
+#define	GTWX5715_PCI_SLOT1_DEVID	1
+#define	GTWX5715_PCI_SLOT1_INTA_GPIO	GTWX5715_GPIO11
+#define	GTWX5715_PCI_SLOT1_INTB_GPIO	GTWX5715_GPIO10
+#define	GTWX5715_PCI_SLOT1_INTA_IRQ	GTWX5715_GPIO11_IRQ
+#define	GTWX5715_PCI_SLOT1_INTB_IRQ	GTWX5715_GPIO10_IRQ
+
+#define GTWX5715_PCI_SLOT_COUNT			2
+#define GTWX5715_PCI_INT_PIN_COUNT		2
+
+/*
+ * GPIO 5,6,7 and12 are hard wired to the Kendin KS8995M Switch
+ * and operate as an SPI type interface.  The details of the interface
+ * are available on Kendin/Micrel's web site.
+ */
+
+#define GTWX5715_KSSPI_SELECT	GTWX5715_GPIO5
+#define GTWX5715_KSSPI_TXD		GTWX5715_GPIO6
+#define GTWX5715_KSSPI_CLOCK	GTWX5715_GPIO7
+#define GTWX5715_KSSPI_RXD		GTWX5715_GPIO12
+
+/*
+ * The "reset" button is wired to GPIO 3.
+ * The GPIO is brought "low" when the button is pushed.
+ */
+
+#define GTWX5715_BUTTON_GPIO	GTWX5715_GPIO3
+#define GTWX5715_BUTTON_IRQ	GTWX5715_GPIO3_IRQ
+
+/*
+ *  Board Label      Front Label
+ *  LED1             Power
+ *  LED2             Wireless-G
+ *  LED3             not populated but could be
+ *  LED4             Internet
+ *  LED5 - LED8      Controlled by KS8995M Switch
+ *  LED9             DMZ
+ */
+
+#define GTWX5715_LED1_GPIO		GTWX5715_GPIO2
+#define GTWX5715_LED2_GPIO		GTWX5715_GPIO9
+#define GTWX5715_LED3_GPIO		GTWX5715_GPIO8
+#define GTWX5715_LED4_GPIO		GTWX5715_GPIO1
+#define GTWX5715_LED9_GPIO		GTWX5715_GPIO4

include/asm-arm/arch-ixp4xx/uncompress.h

@@ -46,9 +46,9 @@ static void putstr(const char *s)
 static __inline__ void __arch_decomp_setup(unsigned long arch_id)
 {
 	/*
-	 * Coyote only has UART2 connected
+	 * Coyote and gtwx5715 only have UART2 connected
 	 */
-	if (machine_is_adi_coyote())
+	if (machine_is_adi_coyote() || machine_is_gtwx5715())
 		uart_base = (volatile u32*) IXP4XX_UART2_BASE_PHYS;
 	else
 		uart_base = (volatile u32*) IXP4XX_UART1_BASE_PHYS;