xtensa: Add xt2000 support files.
Chris Zankel [Thu, 6 Nov 2008 18:17:46 +0000 (10:17 -0800)]
The last check-in to support the xt2000 development platform was missing
some files.

Signed-off-by: Chris Zankel <chris@zankel.net>

arch/xtensa/platforms/xt2000/Makefile [new file with mode: 0644]
arch/xtensa/platforms/xt2000/include/platform/hardware.h [new file with mode: 0644]
arch/xtensa/platforms/xt2000/include/platform/serial.h [new file with mode: 0644]
arch/xtensa/platforms/xt2000/setup.c [new file with mode: 0644]

diff --git a/arch/xtensa/platforms/xt2000/Makefile b/arch/xtensa/platforms/xt2000/Makefile
new file mode 100644 (file)
index 0000000..54d018e
--- /dev/null
@@ -0,0 +1,5 @@
+#
+# Makefile for the Tensilica XT2000 Emulation Board
+#
+
+obj-y                  = setup.o
diff --git a/arch/xtensa/platforms/xt2000/include/platform/hardware.h b/arch/xtensa/platforms/xt2000/include/platform/hardware.h
new file mode 100644 (file)
index 0000000..41459ad
--- /dev/null
@@ -0,0 +1,55 @@
+/*
+ * platform/hardware.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 Tensilica Inc.
+ */
+
+/*
+ * This file contains the hardware configuration of the XT2000 board.
+ */
+
+#ifndef _XTENSA_XT2000_HARDWARE_H
+#define _XTENSA_XT2000_HARDWARE_H
+
+#include <variant/core.h>
+#include <asm/io.h>
+
+/* 
+ * Memory configuration.
+ */
+
+#define PLATFORM_DEFAULT_MEM_START 0x00000000
+#define PLATFORM_DEFAULT_MEM_SIZE 0x08000000
+
+/*
+ * Number of platform IRQs
+ */
+#define PLATFORM_NR_IRQS 3
+/*
+ * On-board components.
+ */
+
+#define SONIC83934_INTNUM      XCHAL_EXTINT3_NUM
+#define SONIC83934_ADDR                IOADDR(0x0d030000)
+
+/*
+ * V3-PCI
+ */
+
+/* The XT2000 uses the V3 as a cascaded interrupt controller for the PCI bus */
+
+#define IRQ_PCI_A              (XCHAL_NUM_INTERRUPTS + 0)
+#define IRQ_PCI_B              (XCHAL_NUM_INTERRUPTS + 1)
+#define IRQ_PCI_C              (XCHAL_NUM_INTERRUPTS + 2)
+
+/*
+ * Various other components.
+ */
+
+#define XT2000_LED_ADDR                IOADDR(0x0d040000)
+
+#endif /* _XTENSA_XT2000_HARDWARE_H */
diff --git a/arch/xtensa/platforms/xt2000/include/platform/serial.h b/arch/xtensa/platforms/xt2000/include/platform/serial.h
new file mode 100644 (file)
index 0000000..7226cf7
--- /dev/null
@@ -0,0 +1,28 @@
+/*
+ * platform/serial.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 2001 Tensilica Inc.
+ */
+
+#ifndef _XTENSA_XT2000_SERIAL_H
+#define _XTENSA_XT2000_SERIAL_H
+
+#include <variant/core.h>
+#include <asm/io.h>
+
+/*  National-Semi PC16552D DUART:  */
+
+#define DUART16552_1_INTNUM    XCHAL_EXTINT4_NUM
+#define DUART16552_2_INTNUM    XCHAL_EXTINT5_NUM
+
+#define DUART16552_1_ADDR      IOADDR(0x0d050020)      /* channel 1 */
+#define DUART16552_2_ADDR      IOADDR(0x0d050000)      /* channel 2 */
+
+#define DUART16552_XTAL_FREQ   18432000        /* crystal frequency in Hz */
+#define BASE_BAUD ( DUART16552_XTAL_FREQ / 16 )
+
+#endif /* _XTENSA_XT2000_SERIAL_H */
diff --git a/arch/xtensa/platforms/xt2000/setup.c b/arch/xtensa/platforms/xt2000/setup.c
new file mode 100644 (file)
index 0000000..9e83940
--- /dev/null
@@ -0,0 +1,181 @@
+/*
+ * arch/xtensa/platforms/xt2000/setup.c
+ *
+ * Platform specific functions for the XT2000 board.
+ *
+ * Authors:    Chris Zankel <chris@zankel.net>
+ *             Joe Taylor <joe@tensilica.com>
+ *
+ * Copyright 2001 - 2004 Tensilica 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.
+ *
+ */
+#include <linux/stddef.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/reboot.h>
+#include <linux/kdev_t.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/console.h>
+#include <linux/delay.h>
+#include <linux/stringify.h>
+#include <linux/platform_device.h>
+#include <linux/serial.h>
+#include <linux/serial_8250.h>
+
+#include <asm/processor.h>
+#include <asm/platform.h>
+#include <asm/bootparam.h>
+#include <platform/hardware.h>
+#include <platform/serial.h>
+
+/* Assumes s points to an 8-chr string.  No checking for NULL. */
+
+static void led_print (int f, char *s)
+{
+       unsigned long* led_addr = (unsigned long*) (XT2000_LED_ADDR + 0xE0) + f;
+       int i;
+       for (i = f; i < 8; i++)
+               if ((*led_addr++ = *s++) == 0)
+                   break;
+}
+
+void platform_halt(void)
+{
+       led_print (0, "  HALT  ");
+       local_irq_disable();
+       while (1);
+}
+
+void platform_power_off(void)
+{
+       led_print (0, "POWEROFF");
+       local_irq_disable();
+       while (1);
+}
+
+void platform_restart(void)
+{
+       /* Flush and reset the mmu, simulate a processor reset, and
+        * jump to the reset vector. */
+
+       __asm__ __volatile__ ("movi     a2, 15\n\t"
+                             "wsr      a2, " __stringify(ICOUNTLEVEL) "\n\t"
+                             "movi     a2, 0\n\t"
+                             "wsr      a2, " __stringify(ICOUNT) "\n\t"
+                             "wsr      a2, " __stringify(IBREAKENABLE) "\n\t"
+                             "wsr      a2, " __stringify(LCOUNT) "\n\t"
+                             "movi     a2, 0x1f\n\t"
+                             "wsr      a2, " __stringify(PS) "\n\t"
+                             "isync\n\t"
+                             "jx       %0\n\t"
+                             :
+                             : "a" (XCHAL_RESET_VECTOR_VADDR)
+                             : "a2"
+                             );
+
+       /* control never gets here */
+}
+
+void __init platform_setup(char** cmdline)
+{
+       led_print (0, "LINUX   ");
+}
+
+/* early initialization */
+
+extern sysmem_info_t __initdata sysmem;
+
+void platform_init(bp_tag_t* first)
+{
+       /* Set default memory block if not provided by the bootloader. */
+
+       if (sysmem.nr_banks == 0) {
+               sysmem.nr_banks = 1;
+               sysmem.bank[0].start = PLATFORM_DEFAULT_MEM_START;
+               sysmem.bank[0].end = PLATFORM_DEFAULT_MEM_START
+                                    + PLATFORM_DEFAULT_MEM_SIZE;
+       }
+}
+
+/* Heartbeat. Let the LED blink. */
+
+void platform_heartbeat(void)
+{
+       static int i=0, t = 0;
+
+       if (--t < 0)
+       {
+               t = 59;
+               led_print(7, i ? ".": " ");
+               i ^= 1;
+       }
+}
+
+//#define RS_TABLE_SIZE 2
+//#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF|ASYNC_SKIP_TEST)
+
+#define _SERIAL_PORT(_base,_irq)                                       \
+{                                                                      \
+       .mapbase        = (_base),                                      \
+       .membase        = (void*)(_base),                               \
+       .irq            = (_irq),                                       \
+       .uartclk        = DUART16552_XTAL_FREQ,                         \
+       .iotype         = UPIO_MEM,                                     \
+       .flags          = UPF_BOOT_AUTOCONF,                            \
+       .regshift       = 2,                                            \
+}
+
+static struct plat_serial8250_port xt2000_serial_data[] = {
+#if XCHAL_HAVE_BE
+       _SERIAL_PORT(DUART16552_1_ADDR + 3, DUART16552_1_INTNUM),
+       _SERIAL_PORT(DUART16552_2_ADDR + 3, DUART16552_2_INTNUM),
+#else
+       _SERIAL_PORT(DUART16552_1_ADDR, DUART16552_1_INTNUM),
+       _SERIAL_PORT(DUART16552_2_ADDR, DUART16552_2_INTNUM),
+#endif
+       { }
+};
+
+static struct platform_device xt2000_serial8250_device = {
+       .name           = "serial8250",
+       .id             = PLAT8250_DEV_PLATFORM,
+       .dev            = {
+           .platform_data = xt2000_serial_data,
+       },
+};
+
+static struct resource xt2000_sonic_res[] = {
+       {
+               .start = SONIC83934_ADDR,
+               .end   = SONIC83934_ADDR + 0xff,
+               .flags = IORESOURCE_MEM,
+       },
+       {
+               .start = SONIC83934_INTNUM,
+               .end = SONIC83934_INTNUM,
+               .flags = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device xt2000_sonic_device = {
+       .name           = "xtsonic",
+       .num_resources  = ARRAY_SIZE(xt2000_sonic_res),
+       .resource               = xt2000_sonic_res,
+};
+
+static int __init xt2000_setup_devinit(void)
+{
+       platform_device_register(&xt2000_serial8250_device);
+       platform_device_register(&xt2000_sonic_device);
+
+       return 0;
+}
+
+device_initcall(xt2000_setup_devinit);