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Message-ID: <Pine.LNX.4.64.0905060832110.24668@venus.araneidae.co.uk>
Date: Wed, 6 May 2009 08:33:29 +0100 (BST)
From: Michael Abbott <michael@...neidae.co.uk>
To: linux-kernel@...r.kernel.org
Subject: [PATCH 2.6.29.2] XCEP PXA255 Processor Board
XCEP PXA255 Processor Board (new architecture)
Adds support for the XCEP processor from IskraTel. This is a small
single board computer with an ARM XScale PXA255 processor, 32M flash,
64M RAM and an SMSC LAN91C111 network device.
This board is used in a series of electron beam position monitors used
in synchrotron light sources world wide.
Signed-off-by: Michael Abbott <michael.abbott@...mond.ac.uk>
---
arch/arm/mach-pxa/Kconfig | 6 ++
arch/arm/mach-pxa/Makefile | 1 +
arch/arm/mach-pxa/xcep.c | 203 ++++++++++++++++++++++++++++++++++++++++++++
drivers/net/smc91x.h | 5 +
4 files changed, 215 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-pxa/xcep.c
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 8eea730..738cc98 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -395,6 +395,12 @@ config MACH_EZX_E2
default y
depends on PXA_EZX
+config MACH_XCEP
+ bool "Iskratel Electronics XCEP"
+ select PXA25x
+ select MTD_PHYSMAP
+ select PXA_SSP
+
endmenu
config PXA25x
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index 7b28bb5..d9890a7 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_MACH_CM_X300) += cm-x300.o
obj-$(CONFIG_PXA_EZX) += ezx.o
obj-$(CONFIG_MACH_INTELMOTE2) += imote2.o
+obj-$(CONFIG_MACH_XCEP) += xcep.o
# Support for blinky lights
led-y := leds.o
diff --git a/arch/arm/mach-pxa/xcep.c b/arch/arm/mach-pxa/xcep.c
new file mode 100644
index 0000000..7a02416
--- /dev/null
+++ b/arch/arm/mach-pxa/xcep.c
@@ -0,0 +1,203 @@
+/*
+ * linux/arch/arm/mach-pxa/xcep.c
+ *
+ * Support for the Iskratel Electronics XCEP platform.
+ *
+ * Author: Ales Bardorfer <ales@...ech.si>
+ * Updates by: Matej Kenda <matej.kenda@...mes-softlab.com>
+ * Created: June 2006
+ * Copyright: (C) 2006 Instrumentation Technologies
+ *
+ *
+ * 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/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/sysdev.h>
+#include <linux/major.h>
+#include <linux/fb.h>
+#include <linux/interrupt.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/mtd/physmap.h>
+#include <linux/i2c.h>
+
+#include <asm/setup.h>
+#include <asm/memory.h>
+#include <asm/mach-types.h>
+#include <mach/hardware.h>
+#include <asm/irq.h>
+#include <asm/sizes.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/flash.h>
+
+#include <mach/pxa-regs.h>
+#include <mach/pxa2xx-regs.h>
+#include <mach/pxa2xx-gpio.h>
+#include <mach/udc.h>
+#include <mach/irda.h>
+#include <mach/pxafb.h>
+#include <mach/mmc.h>
+#include <mach/i2c.h>
+
+#include "generic.h"
+
+
+#define XCEP_ETH_PHYS 0x0c000300
+#define XCEP_ETH_END 0x0c0fffff
+#define XCEP_ETH_IRQ 0
+
+/* XCEP CPLD base */
+#define XCEP_CPLD_BASE 0xf0000000
+
+
+
+static struct mtd_partition xcep_partitions[] = {
+ {
+ .name = "Bootloader",
+ .size = 0x00040000,
+ .offset = 0,
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ }, {
+ .name = "Bootloader ENV",
+ .size = 0x00040000,
+ .offset = 0x00040000,
+ .mask_flags = MTD_WRITEABLE /* force read-only */
+ }, {
+ .name = "Kernel",
+ .size = 0x00100000,
+ .offset = 0x00080000,
+ }, {
+ .name = "Rescue fs",
+ .size = 0x00280000,
+ .offset = 0x00180000,
+ }, {
+ .name = "Filesystem",
+ .size = MTDPART_SIZ_FULL,
+ .offset = 0x00400000
+ }
+};
+
+static struct physmap_flash_data xcep_flash_data[] = {
+ {
+ .width = 4, /* bankwidth in bytes */
+ .parts = xcep_partitions,
+ .nr_parts = ARRAY_SIZE(xcep_partitions)
+ }
+};
+
+static struct resource flash_resource = {
+ .start = PXA_CS0_PHYS,
+ .end = PXA_CS0_PHYS + SZ_32M - 1,
+ .flags = IORESOURCE_MEM,
+};
+
+static struct platform_device flash_device = {
+ .name = "physmap-flash",
+ .id = 0,
+ .dev = {
+ .platform_data = xcep_flash_data,
+ },
+ .resource = &flash_resource,
+ .num_resources = 1,
+};
+
+
+
+static struct resource smc91x_resources[] = {
+ [0] = {
+ .name = "smc91x-regs",
+ .start = XCEP_ETH_PHYS,
+ .end = XCEP_ETH_END,
+ .flags = IORESOURCE_MEM,
+ },
+ [1] = {
+ .start = IRQ_GPIO(XCEP_ETH_IRQ),
+ .end = IRQ_GPIO(XCEP_ETH_IRQ),
+ .flags = IORESOURCE_IRQ,
+ },
+ [2] = {
+ .name = "smc91x-attrib",
+ .start = 0x0e000000,
+ .end = 0x0e0fffff,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device smc91x_device = {
+ .name = "smc91x",
+ .id = -1,
+ .num_resources = ARRAY_SIZE(smc91x_resources),
+ .resource = smc91x_resources,
+};
+
+
+static struct map_desc xcep_io_desc[] __initdata = {
+ { /* CPLD */
+ .virtual = XCEP_CPLD_BASE,
+ .pfn = __phys_to_pfn(0x10000000),
+ .length = 0x00000100,
+ .type = MT_DEVICE
+ }
+};
+
+
+static struct platform_device *devices[] __initdata = {
+ &flash_device,
+ &smc91x_device,
+};
+
+/*
+ * We have to state that there are HWMON devices on the I2C bus on XCEP.
+ * Drivers for HWMON verify capabilities of the adapter when loading and
+ * refuse to attach if the adapter doesn't support HWMON class of devices.
+ * See also Documentation/i2c/porting-clients.
+ */
+static struct i2c_pxa_platform_data xcep_i2c_platform_data = {
+ .class = I2C_CLASS_HWMON
+};
+
+static void __init xcep_init_vlio(void)
+{
+ /* See Intel XScale Developer's Guide for details */
+ /* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
+ MSC1 = (MSC1 & 0xffff) | 0xD5540000;
+ /* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
+ MSC2 = (MSC2 & 0xffff) | 0x72A00000;
+}
+
+static void __init xcep_init(void)
+{
+ xcep_init_vlio();
+
+ platform_add_devices(ARRAY_AND_SIZE(devices));
+ pxa_set_i2c_info(&xcep_i2c_platform_data);
+}
+
+static void __init xcep_map_io(void)
+{
+ pxa_map_io();
+ iotable_init(ARRAY_AND_SIZE(xcep_io_desc));
+
+ /* This is for the SMC chip select */
+ pxa_gpio_mode(GPIO79_nCS_3_MD);
+
+}
+
+MACHINE_START(XCEP, "Iskratel XCEP")
+ .phys_io = 0x80000000,
+ .io_pg_offst = 0xf8000000,
+ .boot_params = 0xa0000100,
+ .init_machine = xcep_init,
+ .map_io = xcep_map_io,
+ .init_irq = pxa25x_init_irq,
+ .timer = &pxa_timer,
+MACHINE_END
diff --git a/drivers/net/smc91x.h b/drivers/net/smc91x.h
index c4ccd12..2c4a1b2 100644
--- a/drivers/net/smc91x.h
+++ b/drivers/net/smc91x.h
@@ -431,6 +431,11 @@ static inline void LPD7_SMC_outsw (unsigned char* a, int r,
#endif
+#if defined(CONFIG_MACH_XCEP)
+#define SMC_USE_PXA_DMA 1
+#endif
+
+
/* store this information for the driver.. */
struct smc_local {
--
1.6.1.3
--
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