Initial file dump from open source releaseHEADmaster

1 files changed, 220 insertions, 0 deletions

diff --git a/arch/arm/mach-integrator/core.c b/arch/arm/mach-integrator/core.c
new file mode 100644
index 00000000..81461d21
--- /dev/null
+++ b/arch/arm/mach-integrator/core.c
@@ -0,0 +1,220 @@
+/*
+ *  linux/arch/arm/mach-integrator/core.c
+ *
+ *  Copyright (C) 2000-2003 Deep Blue Solutions Ltd
+ *
+ * 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/types.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/export.h>
+#include <linux/spinlock.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/memblock.h>
+#include <linux/sched.h>
+#include <linux/smp.h>
+#include <linux/amba/bus.h>
+#include <linux/amba/serial.h>
+#include <linux/io.h>
+#include <linux/stat.h>
+
+#include <mach/hardware.h>
+#include <mach/platform.h>
+#include <mach/cm.h>
+#include <mach/irqs.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/time.h>
+#include <asm/pgtable.h>
+
+#include "common.h"
+
+#ifdef CONFIG_ATAGS
+
+#define INTEGRATOR_RTC_IRQ	{ IRQ_RTCINT }
+#define INTEGRATOR_UART0_IRQ	{ IRQ_UARTINT0 }
+#define INTEGRATOR_UART1_IRQ	{ IRQ_UARTINT1 }
+#define KMI0_IRQ		{ IRQ_KMIINT0 }
+#define KMI1_IRQ		{ IRQ_KMIINT1 }
+
+static AMBA_APB_DEVICE(rtc, "rtc", 0,
+	INTEGRATOR_RTC_BASE, INTEGRATOR_RTC_IRQ, NULL);
+
+static AMBA_APB_DEVICE(uart0, "uart0", 0,
+	INTEGRATOR_UART0_BASE, INTEGRATOR_UART0_IRQ, NULL);
+
+static AMBA_APB_DEVICE(uart1, "uart1", 0,
+	INTEGRATOR_UART1_BASE, INTEGRATOR_UART1_IRQ, NULL);
+
+static AMBA_APB_DEVICE(kmi0, "kmi0", 0, KMI0_BASE, KMI0_IRQ, NULL);
+static AMBA_APB_DEVICE(kmi1, "kmi1", 0, KMI1_BASE, KMI1_IRQ, NULL);
+
+static struct amba_device *amba_devs[] __initdata = {
+	&rtc_device,
+	&uart0_device,
+	&uart1_device,
+	&kmi0_device,
+	&kmi1_device,
+};
+
+int __init integrator_init(bool is_cp)
+{
+	int i;
+
+	/*
+	 * The Integrator/AP lacks necessary AMBA PrimeCell IDs, so we need to
+	 * hard-code them. The Integator/CP and forward have proper cell IDs.
+	 * Else we leave them undefined to the bus driver can autoprobe them.
+	 */
+	if (!is_cp && IS_ENABLED(CONFIG_ARCH_INTEGRATOR_AP)) {
+		rtc_device.periphid	= 0x00041030;
+		uart0_device.periphid	= 0x00041010;
+		uart1_device.periphid	= 0x00041010;
+		kmi0_device.periphid	= 0x00041050;
+		kmi1_device.periphid	= 0x00041050;
+		uart0_device.dev.platform_data = &ap_uart_data;
+		uart1_device.dev.platform_data = &ap_uart_data;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(amba_devs); i++) {
+		struct amba_device *d = amba_devs[i];
+		amba_device_register(d, &iomem_resource);
+	}
+
+	return 0;
+}
+
+#endif
+
+static DEFINE_RAW_SPINLOCK(cm_lock);
+
+/**
+ * cm_control - update the CM_CTRL register.
+ * @mask: bits to change
+ * @set: bits to set
+ */
+void cm_control(u32 mask, u32 set)
+{
+	unsigned long flags;
+	u32 val;
+
+	raw_spin_lock_irqsave(&cm_lock, flags);
+	val = readl(CM_CTRL) & ~mask;
+	writel(val | set, CM_CTRL);
+	raw_spin_unlock_irqrestore(&cm_lock, flags);
+}
+
+EXPORT_SYMBOL(cm_control);
+
+/*
+ * We need to stop things allocating the low memory; ideally we need a
+ * better implementation of GFP_DMA which does not assume that DMA-able
+ * memory starts at zero.
+ */
+void __init integrator_reserve(void)
+{
+	memblock_reserve(PHYS_OFFSET, __pa(swapper_pg_dir) - PHYS_OFFSET);
+}
+
+/*
+ * To reset, we hit the on-board reset register in the system FPGA
+ */
+void integrator_restart(char mode, const char *cmd)
+{
+	cm_control(CM_CTRL_RESET, CM_CTRL_RESET);
+}
+
+static u32 integrator_id;
+
+static ssize_t intcp_get_manf(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	return sprintf(buf, "%02x\n", integrator_id >> 24);
+}
+
+static struct device_attribute intcp_manf_attr =
+	__ATTR(manufacturer,  S_IRUGO, intcp_get_manf,  NULL);
+
+static ssize_t intcp_get_arch(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	const char *arch;
+
+	switch ((integrator_id >> 16) & 0xff) {
+	case 0x00:
+		arch = "ASB little-endian";
+		break;
+	case 0x01:
+		arch = "AHB little-endian";
+		break;
+	case 0x03:
+		arch = "AHB-Lite system bus, bi-endian";
+		break;
+	case 0x04:
+		arch = "AHB";
+		break;
+	default:
+		arch = "Unknown";
+		break;
+	}
+
+	return sprintf(buf, "%s\n", arch);
+}
+
+static struct device_attribute intcp_arch_attr =
+	__ATTR(architecture,  S_IRUGO, intcp_get_arch,  NULL);
+
+static ssize_t intcp_get_fpga(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	const char *fpga;
+
+	switch ((integrator_id >> 12) & 0xf) {
+	case 0x01:
+		fpga = "XC4062";
+		break;
+	case 0x02:
+		fpga = "XC4085";
+		break;
+	case 0x04:
+		fpga = "EPM7256AE (Altera PLD)";
+		break;
+	default:
+		fpga = "Unknown";
+		break;
+	}
+
+	return sprintf(buf, "%s\n", fpga);
+}
+
+static struct device_attribute intcp_fpga_attr =
+	__ATTR(fpga,  S_IRUGO, intcp_get_fpga,  NULL);
+
+static ssize_t intcp_get_build(struct device *dev,
+			       struct device_attribute *attr,
+			       char *buf)
+{
+	return sprintf(buf, "%02x\n", (integrator_id >> 4) & 0xFF);
+}
+
+static struct device_attribute intcp_build_attr =
+	__ATTR(build,  S_IRUGO, intcp_get_build,  NULL);
+
+
+
+void integrator_init_sysfs(struct device *parent, u32 id)
+{
+	integrator_id = id;
+	device_create_file(parent, &intcp_manf_attr);
+	device_create_file(parent, &intcp_arch_attr);
+	device_create_file(parent, &intcp_fpga_attr);
+	device_create_file(parent, &intcp_build_attr);
+}