[ARM PATCH] 1348/1: Add support for the HackKit board

Patch from Stefan Eletzhofer

This patch adds basic support for the HackKit Core CPU Board.

arch/arm/mach-sa1100/Kconfig

@@ -165,6 +165,13 @@ config SA1100_JORNADA720
 	  handheld computer.  See <http://www.hp.com/jornada/products/720>
 	  for details.
 
+config SA1100_HACKKIT
+	bool "HackKit Core CPU Board"
+	depends on ARCH_SA1100
+	help
+	  Say Y here to support the HackKit Core CPU Board
+	  <http://hackkit.eletztrick.de>;
+
 config SA1100_HUW_WEBPANEL
 	bool "HuW WebPanel"
 	depends on ARCH_SA1100

arch/arm/mach-sa1100/Makefile

@@ -16,6 +16,7 @@ export-objs := dma.o generic.o pcipool.o pm.o sa1111.o sa1111-pcibuf.o
 ifeq ($(CONFIG_CPU_FREQ),y)
 obj-$(CONFIG_SA1100_ASSABET)		+= cpu-sa1110.o
 obj-$(CONFIG_SA1100_CERF)		+= cpu-sa1110.o
+obj-$(CONFIG_SA1100_HACKKIT)		+= cpu-sa1110.o
 obj-$(CONFIG_SA1100_LART)		+= cpu-sa1100.o
 obj-$(CONFIG_SA1100_PT_SYSTEM3)		+= cpu-sa1110.o
 endif
@@ -60,6 +61,9 @@ led-$(CONFIG_SA1100_GRAPHICSMASTER)	+= leds-graphicsmaster.o
 obj-$(CONFIG_SA1100_H3600)		+= h3600.o
 export-objs				+= h3600.o
 
+obj-$(CONFIG_SA1100_HACKKIT)		+= hackkit.o
+led-$(CONFIG_SA1100_HACKKIT)		+= leds-hackkit.o
+
 obj-$(CONFIG_SA1100_HUW_WEBPANEL)	+= huw_webpanel.o
 export-objs				+= huw_webpanel.o
 

arch/arm/mach-sa1100/hackkit.c

+/*
+ * linux/arch/arm/mach-sa1100/hackkit.c
+ *
+ * Copyright (C) 2002 Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>
+ *
+ * This file contains all HackKit tweaks. Based on original work from
+ * Nicolas Pitre's assabet fixes
+ *
+ * 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/config.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/cpufreq.h>
+#include <linux/serial_core.h>
+
+#include <asm/hardware.h>
+#include <asm/mach-types.h>
+#include <asm/setup.h>
+#include <asm/page.h>
+#include <asm/pgtable.h>
+#include <asm/irq.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/irq.h>
+#include <asm/mach/serial_sa1100.h>
+
+#include "generic.h"
+
+/**********************************************************************
+ *  prototypes
+ */
+
+/* init funcs */
+static void __init get_hackkit_scr(void);
+static int __init hackkit_init(void);
+static void __init hackkit_init_irq(void);
+static void __init hackkit_map_io(void);
+
+static u_int hackkit_get_mctrl(struct uart_port *port);
+static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl);
+static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate);
+
+/**********************************************************************
+ *  global data
+ */
+
+/**********************************************************************
+ *  static data
+ */
+
+static struct map_desc hackkit_io_desc[] __initdata = {
+ /* virtual     physical    length      type */
+  { 0xe8000000, 0x00000000, 0x01000000, MT_DEVICE } /* Flash bank 0 */
+};
+
+static struct sa1100_port_fns hackkit_port_fns __initdata = {
+	.set_mctrl	= hackkit_set_mctrl,
+	.get_mctrl	= hackkit_get_mctrl,
+	.pm		= hackkit_uart_pm,
+};
+
+/**********************************************************************
+ *  Static functions
+ */
+
+static void __init hackkit_map_io(void)
+{
+	sa1100_map_io();
+	iotable_init(hackkit_io_desc, ARRAY_SIZE(hackkit_io_desc));
+
+	sa1100_register_uart_fns(&hackkit_port_fns);
+	sa1100_register_uart(0, 1);	/* com port */
+	sa1100_register_uart(1, 2);
+	sa1100_register_uart(2, 3);	/* radio module */
+
+	Ser1SDCR0 |= SDCR0_SUS;
+}
+
+static void __init hackkit_init_irq(void)
+{
+	/* none used yet */
+}
+
+/**
+ *	hackkit_uart_pm - powermgmt callback function for system 3 UART
+ *	@port: uart port structure
+ *	@state: pm state
+ *	@oldstate: old pm state
+ *
+ */
+static void hackkit_uart_pm(struct uart_port *port, u_int state, u_int oldstate)
+{
+	/* TODO: switch on/off uart in powersave mode */
+}
+
+/*
+ * Note! this can be called from IRQ context.
+ * FIXME: No modem ctrl lines yet.
+ */
+static void hackkit_set_mctrl(struct uart_port *port, u_int mctrl)
+{
+#if 0
+	if (port->mapbase == _Ser1UTCR0) {
+		u_int set = 0, clear = 0;
+
+		if (mctrl & TIOCM_RTS)
+			set |= PT_CTRL2_RS1_RTS;
+		else
+			clear |= PT_CTRL2_RS1_RTS;
+
+		if (mctrl & TIOCM_DTR)
+			set |= PT_CTRL2_RS1_DTR;
+		else
+			clear |= PT_CTRL2_RS1_DTR;
+
+		PTCTRL2_clear(clear);
+		PTCTRL2_set(set);
+	}
+#endif
+}
+
+static u_int hackkit_get_mctrl(struct uart_port *port)
+{
+	u_int ret = 0;
+#if 0
+	u_int irqsr = PT_IRQSR;
+
+	/* need 2 reads to read current value */
+	irqsr = PT_IRQSR;
+
+	/* TODO: check IRQ source register for modem/com
+	 status lines and set them correctly. */
+#endif
+
+	ret = TIOCM_CD | TIOCM_CTS | TIOCM_DSR;
+
+	return ret;
+}
+
+static int __init hackkit_init(void)
+{
+	int ret = 0;
+
+	if ( !machine_is_hackkit() ) {
+		ret = -EINVAL;
+		goto DONE;
+	}
+
+	hackkit_init_irq();
+
+	ret = 0;
+DONE:
+	return ret;
+}
+
+/**********************************************************************
+ *  Exported Functions
+ */
+
+/**********************************************************************
+ *  kernel magic macros
+ */
+arch_initcall(hackkit_init);
+
+MACHINE_START(HACKKIT, "HackKit Cpu Board")
+	BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
+	BOOT_PARAMS(0xc0000100)
+	MAPIO(hackkit_map_io)
+	INITIRQ(sa1100_init_irq)
+MACHINE_END

arch/arm/mach-sa1100/leds-hackkit.c

+/*
+ * linux/arch/arm/mach-sa1100/leds-hackkit.c
+ *
+ * based on leds-lart.c
+ *
+ * (C) Erik Mouw (J.A.K.Mouw@its.tudelft.nl), April 21, 2000
+ * (C) Stefan Eletzhofer <stefan.eletzhofer@eletztrick.de>, 2002
+ *
+ * The HackKit has two leds (GPIO 22/23). The red led (gpio 22) is used
+ * as cpu led, the green one is used as timer led.
+ */
+#include <linux/config.h>
+#include <linux/init.h>
+
+#include <asm/hardware.h>
+#include <asm/leds.h>
+#include <asm/system.h>
+
+#include "leds.h"
+
+
+#define LED_STATE_ENABLED	1
+#define LED_STATE_CLAIMED	2
+
+static unsigned int led_state;
+static unsigned int hw_led_state;
+
+#define LED_GREEN    GPIO_GPIO23
+#define LED_RED    GPIO_GPIO22
+#define LED_MASK  (LED_RED | LED_GREEN)
+
+void hackkit_leds_event(led_event_t evt)
+{
+	unsigned long flags;
+
+	local_irq_save(flags);
+
+	switch(evt) {
+		case led_start:
+			/* pin 22/23 are outputs */
+			GPDR |= LED_MASK;
+			hw_led_state = LED_MASK;
+			led_state = LED_STATE_ENABLED;
+			break;
+
+		case led_stop:
+			led_state &= ~LED_STATE_ENABLED;
+			break;
+
+		case led_claim:
+			led_state |= LED_STATE_CLAIMED;
+			hw_led_state = LED_MASK;
+			break;
+
+		case led_release:
+			led_state &= ~LED_STATE_CLAIMED;
+			hw_led_state = LED_MASK;
+			break;
+
+#ifdef CONFIG_LEDS_TIMER
+		case led_timer:
+			if (!(led_state & LED_STATE_CLAIMED))
+				hw_led_state ^= LED_GREEN;
+			break;
+#endif
+
+#ifdef CONFIG_LEDS_CPU
+		case led_idle_start:
+			/* The LART people like the LED to be off when the
+			   system is idle... */
+			if (!(led_state & LED_STATE_CLAIMED))
+				hw_led_state &= ~LED_RED;
+			break;
+
+		case led_idle_end:
+			/* ... and on if the system is not idle */
+			if (!(led_state & LED_STATE_CLAIMED))
+				hw_led_state |= LED_RED;
+			break;
+#endif
+
+		case led_red_on:
+			if (led_state & LED_STATE_CLAIMED)
+				hw_led_state &= ~LED_RED;
+			break;
+
+		case led_red_off:
+			if (led_state & LED_STATE_CLAIMED)
+				hw_led_state |= LED_RED;
+			break;
+
+		case led_green_on:
+			if (led_state & LED_STATE_CLAIMED)
+				hw_led_state &= ~LED_GREEN;
+			break;
+
+		case led_green_off:
+			if (led_state & LED_STATE_CLAIMED)
+				hw_led_state |= LED_GREEN;
+			break;
+
+		default:
+			break;
+	}
+
+	/* Now set the GPIO state, or nothing will happen at all */
+	if (led_state & LED_STATE_ENABLED) {
+		GPSR = hw_led_state;
+		GPCR = hw_led_state ^ LED_MASK;
+	}
+
+	local_irq_restore(flags);
+}

arch/arm/mach-sa1100/leds.c

@@ -29,6 +29,8 @@ sa1100_leds_init(void)
 		leds_event = flexanet_leds_event;
 	if (machine_is_graphicsclient())
 		leds_event = graphicsclient_leds_event;
+	if (machine_is_hackkit())
+		leds_event = hackkit_leds_event;
 	if (machine_is_lart())
 		leds_event = lart_leds_event;
 	if (machine_is_pfs168())

arch/arm/mach-sa1100/leds.h

@@ -5,6 +5,7 @@ extern void brutus_leds_event(led_event_t evt);
 extern void cerf_leds_event(led_event_t evt);
 extern void flexanet_leds_event(led_event_t evt);
 extern void graphicsclient_leds_event(led_event_t evt);
+extern void hackkit_leds_event(led_event_t evt);
 extern void lart_leds_event(led_event_t evt);
 extern void pfs168_leds_event(led_event_t evt);
 extern void graphicsmaster_leds_event(led_event_t evt);

drivers/mtd/maps/sa1100-flash.c

@@ -512,6 +512,37 @@ static void h3xxx_set_vpp(struct map_info *map, int vpp)
 #define h3xxx_set_vpp NULL
 #endif
 
+#ifdef CONFIG_SA1100_HACKKIT
+static struct mtd_partition hackkit_partitions[] = {
+	{
+		.name		= "BLOB",
+		.size		= 0x00040000,
+		.offset		= 0x00000000,
+		.mask_flags	= MTD_WRITEABLE,  /* force read-only */
+	}, {
+		.name		= "config",
+		.size		= 0x00040000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "kernel",
+		.size		= 0x00100000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "initrd",
+		.size		= 0x00180000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "rootfs",
+		.size		= 0x700000,
+		.offset		= MTDPART_OFS_APPEND,
+	}, {
+		.name		= "data",
+		.size		= MTDPART_SIZ_FULL,
+		.offset		= MTDPART_OFS_APPEND,
+	}
+};
+#endif
+
 #ifdef CONFIG_SA1100_HUW_WEBPANEL
 static struct mtd_partition huw_webpanel_partitions[] = {
 	{
@@ -849,6 +880,12 @@ static int __init sa1100_static_partitions(struct mtd_partition **parts)
 		nb_parts     = ARRAY_SIZE(h3xxx_partitions);
 	}
 #endif
+#ifdef CONFIG_SA1100_HACKKIT
+	if (machine_is_hackkit()) {
+		*parts = hackkit_partitions;
+		nb_parts = ARRAY_SIZE(hackkit_partitions);
+	}
+#endif
 #ifdef CONFIG_SA1100_HUW_WEBPANEL
 	if (machine_is_huw_webpanel()) {
 		*parts       = huw_webpanel_partitions;