patch-2.4.22 linux-2.4.22/arch/sh64/mach-cayman/setup.c

• Lines: 210
• Date: 2003-08-25 04:44:40.000000000 -0700
• Orig file: linux-2.4.21/arch/sh64/mach-cayman/setup.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.21/arch/sh64/mach-cayman/setup.c linux-2.4.22/arch/sh64/mach-cayman/setup.c
@@ -0,0 +1,209 @@
+/*
+ * 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.
+ *
+ * arch/sh64/mach-cayman/setup.c
+ *
+ * SH5 Cayman support
+ *
+ * This file handles the architecture-dependent parts of initialization
+ *
+ * Copyright David J. Mckay.
+ * Needs major work!
+ *
+ * benedict.gaster@superh.com:	 3rd May 2002
+ *    Added support for ramdisk, removing statically linked romfs at the same time.
+ *
+ * lethal@linux-sh.org:          15th May 2003
+ *    Use the generic procfs cpuinfo interface, just return a valid board name.
+ */
+
+#include <linux/stddef.h>
+#include <linux/init.h>
+#include <linux/config.h>
+#include <linux/mm.h>
+#include <linux/bootmem.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/seq_file.h>
+#include <asm/processor.h>
+#include <asm/platform.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/page.h>
+
+#define RES_COUNT(res) ((sizeof((res))/sizeof(struct resource)))
+
+/*
+ * Platform Dependent Interrupt Priorities.
+ */
+
+/* Using defaults defined in irq.h */
+#define	RES NO_PRIORITY		/* Disabled */
+#define IR0 IRL0_PRIORITY	/* IRLs */
+#define IR1 IRL1_PRIORITY
+#define IR2 IRL2_PRIORITY
+#define IR3 IRL3_PRIORITY
+#define PCA INTA_PRIORITY	/* PCI Ints */
+#define PCB INTB_PRIORITY
+#define PCC INTC_PRIORITY
+#define PCD INTD_PRIORITY
+#define SER TOP_PRIORITY
+#define ERR TOP_PRIORITY
+#define PW0 TOP_PRIORITY
+#define PW1 TOP_PRIORITY
+#define PW2 TOP_PRIORITY
+#define PW3 TOP_PRIORITY
+#define DM0 NO_PRIORITY		/* DMA Ints */
+#define DM1 NO_PRIORITY
+#define DM2 NO_PRIORITY
+#define DM3 NO_PRIORITY
+#define DAE NO_PRIORITY
+#define TU0 TIMER_PRIORITY	/* TMU Ints */
+#define TU1 NO_PRIORITY
+#define TU2 NO_PRIORITY
+#define TI2 NO_PRIORITY
+#define ATI NO_PRIORITY		/* RTC Ints */
+#define PRI NO_PRIORITY
+#define CUI RTC_PRIORITY
+#define ERI SCIF_PRIORITY	/* SCIF Ints */
+#define RXI SCIF_PRIORITY
+#define BRI SCIF_PRIORITY
+#define TXI SCIF_PRIORITY
+#define ITI TOP_PRIORITY	/* WDT Ints */
+
+/* Setup for the SMSC FDC37C935 */
+#define SMSC_BASE               0x04000000
+#define SMSC_CONFIG_PORT_ADDR	0x3f0
+#define SMSC_INDEX_PORT_ADDR	SMSC_CONFIG_PORT_ADDR
+#define SMSC_DATA_PORT_ADDR	0x3f1
+
+#define SMSC_ENTER_CONFIG_KEY	0x55
+#define SMSC_EXIT_CONFIG_KEY	0xaa
+
+#define SMCS_LOGICAL_DEV_INDEX	0x07
+#define SMSC_DEVICE_ID_INDEX	0x20
+#define SMSC_DEVICE_REV_INDEX	0x21
+#define SMSC_ACTIVATE_INDEX	0x30
+#define SMSC_PRIMARY_INT_INDEX	0x70
+#define SMSC_SECONDARY_INT_INDEX 0x72
+
+#define SMSC_KEYBOARD_DEVICE 7
+
+#define SMSC_READ_INDEXED(index) ({ \
+	outb((index), SMSC_INDEX_PORT_ADDR); \
+	inb(SMSC_DATA_PORT_ADDR); })
+#define SMSC_WRITE_INDEXED(val, index) ({ \
+	outb((index), SMSC_INDEX_PORT_ADDR); \
+	outb((val),   SMSC_DATA_PORT_ADDR); })
+
+unsigned long smsc_virt;
+
+/*
+ * Platform dependent structures: maps and parms block.
+ */
+struct resource io_resources[] = {
+	/* To be updated with external devices */
+};
+
+struct resource kram_resources[] = {
+	{ "Kernel code", 0, 0 },	/* These must be last in the array */
+	{ "Kernel data", 0, 0 }		/* These must be last in the array */
+};
+
+struct resource xram_resources[] = {
+	/* To be updated with external devices */
+};
+
+struct resource rom_resources[] = {
+	/* To be updated with external devices */
+};
+
+struct sh64_platform platform_parms = {
+	.readonly_rootfs =	1,
+	.initial_root_dev =	0x0100,
+	.loader_type =		1,
+	.io_res_p =		io_resources,
+	.io_res_count =		RES_COUNT(io_resources),
+	.kram_res_p =		kram_resources,
+	.kram_res_count =	RES_COUNT(kram_resources),
+	.xram_res_p =		xram_resources,
+	.xram_res_count =	RES_COUNT(xram_resources),
+	.rom_res_p =		rom_resources,
+	.rom_res_count =	RES_COUNT(rom_resources),
+};
+
+int platform_int_priority[NR_INTC_IRQS] = {
+	IR0, IR1, IR2, IR3, PCA, PCB, PCC, PCD,	/* IRQ  0- 7 */
+	RES, RES, RES, RES, SER, ERR, PW3, PW2,	/* IRQ  8-15 */
+	PW1, PW0, DM0, DM1, DM2, DM3, DAE, RES,	/* IRQ 16-23 */
+	RES, RES, RES, RES, RES, RES, RES, RES,	/* IRQ 24-31 */
+	TU0, TU1, TU2, TI2, ATI, PRI, CUI, ERI,	/* IRQ 32-39 */
+	RXI, BRI, TXI, RES, RES, RES, RES, RES,	/* IRQ 40-47 */
+	RES, RES, RES, RES, RES, RES, RES, RES,	/* IRQ 48-55 */
+	RES, RES, RES, RES, RES, RES, RES, ITI,	/* IRQ 56-63 */
+};
+
+static int __init smsc_setup(void)
+{
+	unsigned char devid, devrev;
+
+	smsc_virt = onchip_remap(SMSC_BASE, 1024, "SMSC");
+	if (!smsc_virt) {
+		panic("Unable to remap SMSC\n");
+	}
+
+	/* Initially the chip is in run state */
+	/* Put it into configuration state */
+	outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
+	outb(SMSC_ENTER_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
+
+	/* Read device ID info */
+	devid = SMSC_READ_INDEXED(SMSC_DEVICE_ID_INDEX);
+	devrev = SMSC_READ_INDEXED(SMSC_DEVICE_REV_INDEX);
+	printk("SMSC devid %02x rev %02x\n", devid, devrev);
+
+	/* Select the keyboard device */
+	SMSC_WRITE_INDEXED(SMSC_KEYBOARD_DEVICE, SMCS_LOGICAL_DEV_INDEX);
+
+	/* enable it */
+	SMSC_WRITE_INDEXED(1, SMSC_ACTIVATE_INDEX);	
+
+	/* Select the interrupts */
+	/* On a PC keyboard is IRQ1, mouse is IRQ12 */
+	SMSC_WRITE_INDEXED(1, SMSC_PRIMARY_INT_INDEX);
+	SMSC_WRITE_INDEXED(12, SMSC_SECONDARY_INT_INDEX);
+
+	/* Exit the configuraton state */
+	outb(SMSC_EXIT_CONFIG_KEY, SMSC_CONFIG_PORT_ADDR);
+
+	return 0;
+}
+
+/* This is grotty, but, because kernel is always referenced on the link line
+ * before any devices, this is safe.
+ */
+__initcall(smsc_setup);
+
+void __init platform_setup(void)
+{
+	/* Cayman platform leaves the decision to head.S, for now */
+	platform_parms.fpu_flags = fpu_in_use;
+}
+
+void __init platform_monitor(void)
+{
+	/* Nothing yet .. */
+}
+
+void __init platform_reserve(void)
+{
+	/* Nothing yet .. */
+}
+
+const char *get_system_type(void)
+{
+	return "Hitachi Cayman";
+}
+