patch-2.4.21 linux-2.4.21/arch/ppc/platforms/lopec_setup.c

• Lines: 450
• Date: 2003-06-13 07:51:31.000000000 -0700
• Orig file: linux-2.4.20/arch/ppc/platforms/lopec_setup.c
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.20/arch/ppc/platforms/lopec_setup.c linux-2.4.21/arch/ppc/platforms/lopec_setup.c
@@ -0,0 +1,449 @@
+/*
+ * arch/ppc/platforms/lopec_setup.c
+ * 
+ * Setup routines for the Motorola LoPEC.
+ *
+ * Author: Dan Cox
+ *         danc@mvista.com
+ *
+ * Copyright 2001-2002 MontaVista Software 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/config.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/pci.h>
+#include <linux/time.h>
+#include <linux/types.h>
+#include <linux/major.h>
+#include <linux/kdev_t.h>
+#include <linux/ide.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/console.h>
+#include <linux/serial.h>
+#include <linux/serialP.h>
+
+#include <asm/system.h>
+#include <asm/pgtable.h>
+#include <asm/machdep.h>
+#include <asm/page.h>
+#include <asm/dma.h>
+#include <asm/io.h>
+#include <asm/time.h>
+#include <asm/delay.h>
+#include <asm/irq.h>
+#include <asm/open_pic.h>
+#include <asm/i8259.h>
+#include <asm/pci-bridge.h>
+#include <asm/todc.h>
+#include <asm/bootinfo.h>
+#include <asm/mpc10x.h>
+#include <asm/keyboard.h>
+#include <asm/prep_nvram.h>
+#include <asm/serial.h>
+  
+extern char saved_command_line[];
+extern void lopec_find_bridges(void);
+
+extern int pckbd_setkeycode(unsigned int scancode, unsigned int keycode);
+extern int pckbd_getkeycode(unsigned int scancode);
+extern int pckbd_translate(unsigned char scancode, unsigned char *keycode,
+			   char raw_mode);
+extern char pckbd_unexpected_up(unsigned char keycode);
+extern void pckbd_leds(unsigned char leds);
+extern void pckbd_init_hw(void);
+extern unsigned char pckbd_sysrq_xlate[128];
+extern void gen550_progress(char *, unsigned short);
+extern void gen550_init(int, struct serial_struct *);
+
+/*
+ * Define all of the IRQ senses and polarities.  Taken from the
+ * LoPEC Programmer's Reference Guide */
+static u_char lopec_openpic_initsenses[17] __initdata = {
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),	/* IRQ 0 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 1 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),	/* IRQ 2 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 3 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),	/* IRQ 4 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),	/* IRQ 5 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 6 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 7 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 8 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 9 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 10 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 11 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE),	/* IRQ 12 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_POSITIVE),	/* IRQ 13 */
+	(IRQ_SENSE_EDGE | IRQ_POLARITY_NEGATIVE),	/* IRQ 14 */
+	(IRQ_SENSE_LEVEL | IRQ_POLARITY_NEGATIVE)	/* IRQ 15 */
+};
+
+static int
+lopec_show_cpuinfo(struct seq_file *m)
+{
+	seq_printf(m, "machine\t\t: Motorola LoPEC\n");
+	return 0;
+}
+
+static u32
+lopec_irq_cannonicalize(u32 irq)
+{
+	if (irq == 2)
+		return 9;
+	else
+		return irq;
+}
+
+static void
+lopec_restart(char *cmd)
+{
+#define LOPEC_SYSSTAT1 0xffe00000
+	/* force a hard reset, if possible */
+	unsigned char reg = *((unsigned char *) LOPEC_SYSSTAT1);
+	reg |= 0x80;
+	*((unsigned char *) LOPEC_SYSSTAT1) = reg;
+
+	__cli();
+	while(1);
+#undef LOPEC_SYSSTAT1
+}
+
+static void
+lopec_halt(void)
+{
+	__cli();
+	while(1);
+}
+
+static void
+lopec_power_off(void)
+{
+	lopec_halt();
+}
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_IDE_MODULE)
+int lopec_ide_ports_known = 0;
+static ide_ioreg_t lopec_ide_regbase[MAX_HWIFS];
+static ide_ioreg_t lopec_ide_ctl_regbase[MAX_HWIFS];
+static ide_ioreg_t lopec_idedma_regbase;
+
+static void
+lopec_ide_probe(void)
+{
+	struct pci_dev *dev = pci_find_device(PCI_VENDOR_ID_WINBOND,
+					      PCI_DEVICE_ID_WINBOND_82C105,
+					      NULL);
+	lopec_ide_ports_known = 1;
+
+	if (dev) {
+		lopec_ide_regbase[0] = dev->resource[0].start;
+		lopec_ide_regbase[1] = dev->resource[2].start;
+		lopec_ide_ctl_regbase[0] = dev->resource[1].start;
+		lopec_ide_ctl_regbase[1] = dev->resource[3].start;
+		lopec_idedma_regbase = dev->resource[4].start;
+	}
+}
+
+static int
+lopec_ide_default_irq(ide_ioreg_t base)
+{
+	if (lopec_ide_ports_known == 0)
+		lopec_ide_probe();
+
+	if (base == lopec_ide_regbase[0])
+		return 14;
+	else if (base == lopec_ide_regbase[1])
+		return 15;
+	else
+		return 0;
+}
+
+static ide_ioreg_t
+lopec_ide_default_io_base(int index)
+{
+	if (lopec_ide_ports_known == 0)
+		lopec_ide_probe();
+	return lopec_ide_regbase[index];
+}
+
+static void __init
+lopec_ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data,
+			  ide_ioreg_t ctl, int *irq)
+{
+	ide_ioreg_t reg = data;
+	uint alt_status_base;
+	int i;
+
+	for(i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++)
+		hw->io_ports[i] = reg++;
+
+	if (data == lopec_ide_regbase[0]) {
+		alt_status_base = lopec_ide_ctl_regbase[0] + 2;
+		hw->irq = 14;
+	}
+	else if (data == lopec_ide_regbase[1]) {
+		alt_status_base = lopec_ide_ctl_regbase[1] + 2;
+		hw->irq = 15;
+	}
+	else {
+		alt_status_base = 0;
+		hw->irq = 0;
+	}
+
+	if (ctl)
+		hw->io_ports[IDE_CONTROL_OFFSET] = ctl;
+	else
+		hw->io_ports[IDE_CONTROL_OFFSET] = alt_status_base;
+
+	if (irq != NULL)
+		*irq = hw->irq;
+
+}
+#endif /* BLK_DEV_IDE */
+
+static void __init
+lopec_init_IRQ(void)
+{
+	int i;
+
+	OpenPIC_InitSenses = lopec_openpic_initsenses;
+	OpenPIC_NumInitSenses = sizeof(lopec_openpic_initsenses);
+
+	/*
+	 * We need to tell openpic_set_sources where things actually are.
+	 * mpc10x_common will setup OpenPIC_Addr at ioremap(EUMB phys base +
+	 * EPIC offset (0x40000));  The EPIC IRQ Register Address Map -
+	 * Interrupt Source Configuration Registers gives these numbers
+	 * as offsets starting at 0x50200, we need to adjust occordinly.
+	 */
+	/* Map serial interrupts 0-15 */
+	openpic_set_sources(0, 16, OpenPIC_Addr + 0x10200);
+	/* Skip reserved space and map i2c and DMA Ch[01] */
+	openpic_set_sources(16, 3, OpenPIC_Addr + 0x11020);
+	/* Skip reserved space and map Message Unit Interrupt (I2O) */
+	openpic_set_sources(19, 1, OpenPIC_Addr + 0x110C0);
+
+	openpic_init(NUM_8259_INTERRUPTS);
+	/* We have a cascade on OpenPIC IRQ 0, Linux IRQ 16 */
+	openpic_hookup_cascade(NUM_8259_INTERRUPTS, "82c59 cascade",
+			&i8259_irq);
+
+	/* Map i8259 interrupts */
+	for(i = 0; i < NUM_8259_INTERRUPTS; i++)
+		irq_desc[i].handler = &i8259_pic;
+
+	i8259_init(0);
+}
+
+static void __init
+lopec_init2(void)
+{
+	outb(0x00, 0x4d0);
+	outb(0xc0, 0x4d1);
+
+	request_region(0x00, 0x20, "dma1");
+	request_region(0x20, 0x20, "pic1");
+	request_region(0x40, 0x20, "timer");
+	request_region(0x80, 0x10, "dma page reg");
+	request_region(0xa0, 0x20, "pic2");
+	request_region(0xc0, 0x20, "dma2");
+}
+
+static void __init
+lopec_map_io(void)
+{
+	io_block_mapping(0xf0000000, 0xf0000000, 0x10000000, _PAGE_IO);
+	io_block_mapping(0xb0000000, 0xb0000000, 0x10000000, _PAGE_IO);
+}
+
+static void __init
+lopec_set_bat(void)
+{
+	unsigned long batu, batl;
+
+	__asm__ __volatile__(
+		"lis %0,0xf800\n \
+                 ori %1,%0,0x002a\n \
+                 ori %0,%0,0x0ffe\n \
+                 mtspr 0x21e,%0\n \
+                 mtspr 0x21f,%1\n \
+                 isync\n \
+                 sync "
+		: "=r" (batu), "=r" (batl));
+}
+
+static unsigned long __init
+lopec_find_end_of_memory(void)
+{
+	return boot_mem_size;
+}
+
+TODC_ALLOC();
+
+#ifdef CONFIG_SERIAL
+static void __init
+lopec_early_serial_map(void)
+{
+	struct serial_struct serial_req;
+
+	memset(&serial_req, 0, sizeof(serial_req));
+
+	/* Setup ioremapped serial port access */
+	serial_req.line = 0;
+	serial_req.baud_base = BASE_BAUD;
+	serial_req.irq = UART0_INT;
+	serial_req.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
+	serial_req.io_type = SERIAL_IO_MEM;
+	serial_req.iomem_base = ioremap(UART0_PORT, 8);
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	/* Configure debug serial access */
+	gen550_init(0, &serial_req);
+#endif
+
+	if (early_serial_setup(&serial_req) != 0)
+		printk("Early serial init of port 0 failed\n");
+
+	/* Assume early_serial_setup() doesn't modify serial_req */
+	serial_req.line = 1;
+	serial_req.port = 1;
+	serial_req.irq = UART1_INT; 
+	serial_req.iomem_base = ioremap(UART1_PORT, 8);
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	/* Configure debug serial access */
+	gen550_init(1, &serial_req);
+#endif
+
+	if (early_serial_setup(&serial_req) != 0)
+		printk("Early serial init of port 1 failed\n");
+
+	serial_req.line = 2;
+	serial_req.port = 2;
+	serial_req.irq = UART2_INT; 
+	serial_req.iomem_base = ioremap(UART2_PORT, 8);
+
+#if defined(CONFIG_SERIAL_TEXT_DEBUG) || defined(CONFIG_KGDB)
+	/* Configure debug serial access */
+	gen550_init(2, &serial_req);
+#endif
+
+	if (early_serial_setup(&serial_req) != 0)
+		printk("Early serial init of port 2 failed\n");
+}
+#endif
+
+static void __init
+lopec_setup_arch(void)
+{
+
+	TODC_INIT(TODC_TYPE_MK48T37, 0, 0,
+		  ioremap(0xffe80000, 0x8000), 8);
+
+	loops_per_jiffy = 100000000/HZ;
+
+	lopec_find_bridges();
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	if (initrd_start)
+		ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
+	else
+#elif defined(CONFIG_ROOT_NFS)
+        	ROOT_DEV = to_kdev_t(0x00ff);
+#elif defined(CONFIG_BLK_DEV_IDE)
+	        ROOT_DEV = to_kdev_t(0x0301);
+#else
+        	ROOT_DEV = to_kdev_t(0x0801);
+#endif
+
+#ifdef CONFIG_DUMMY_CONSOLE
+	conswitchp = &dummy_con;
+#endif
+
+#ifdef CONFIG_SERIAL
+	lopec_early_serial_map();
+#endif
+
+#ifdef CONFIG_PPCBUG_NVRAM
+	/* Read in NVRAM data */ 
+	init_prep_nvram();
+
+	/* if no bootargs, look in NVRAM */
+	if ( cmd_line[0] == '\0' ) {
+		char *bootargs;
+		 bootargs = prep_nvram_get_var("bootargs");
+		 if (bootargs != NULL) {
+			 strcpy(cmd_line, bootargs);
+			 /* again.. */
+			 strcpy(saved_command_line, cmd_line);
+		}
+	}
+#endif
+}
+
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	      unsigned long r6, unsigned long r7)
+{
+	parse_bootinfo(find_bootinfo());
+	lopec_set_bat();
+
+	isa_io_base = MPC10X_MAPB_ISA_IO_BASE;
+	isa_mem_base = MPC10X_MAPB_ISA_MEM_BASE;
+	pci_dram_offset = MPC10X_MAPB_DRAM_OFFSET;
+	ISA_DMA_THRESHOLD = 0x00ffffff;
+	DMA_MODE_READ = 0x44;
+	DMA_MODE_WRITE = 0x48;
+
+	ppc_md.setup_arch = lopec_setup_arch;
+	ppc_md.show_cpuinfo = lopec_show_cpuinfo;
+	ppc_md.irq_cannonicalize = lopec_irq_cannonicalize;
+	ppc_md.init_IRQ = lopec_init_IRQ;
+	ppc_md.get_irq = openpic_get_irq;
+	ppc_md.init = lopec_init2;
+
+	ppc_md.restart = lopec_restart;
+	ppc_md.power_off = lopec_power_off;
+	ppc_md.halt = lopec_halt;
+
+	ppc_md.find_end_of_memory = lopec_find_end_of_memory;
+	ppc_md.setup_io_mappings = lopec_map_io;
+
+#ifdef CONFIG_VT
+	ppc_md.kbd_setkeycode = pckbd_setkeycode;
+	ppc_md.kbd_getkeycode = pckbd_getkeycode;
+	ppc_md.kbd_translate = pckbd_translate;
+	ppc_md.kbd_unexpected_up = pckbd_unexpected_up;
+#ifdef CONFIG_MAGIC_SYSRQ
+	ppc_md.ppc_kbd_sysrq_xlate = pckbd_sysrq_xlate;
+	SYSRQ_KEY = 0x54;
+#endif /* CONFIG_MAGIC_SYSRQ */
+#endif /* CONFIG_VT */
+
+	ppc_md.time_init = todc_time_init;
+	ppc_md.set_rtc_time = todc_set_rtc_time;
+	ppc_md.get_rtc_time = todc_get_rtc_time;
+	ppc_md.calibrate_decr = todc_calibrate_decr;
+
+	ppc_md.nvram_read_val = todc_direct_read_val;
+	ppc_md.nvram_write_val = todc_direct_write_val;
+
+#if defined(CONFIG_BLK_DEV_IDE) || defined(CONFIG_BLK_DEV_ID_MODULE)
+	ppc_ide_md.default_irq = lopec_ide_default_irq;
+	ppc_ide_md.default_io_base = lopec_ide_default_io_base;
+	ppc_ide_md.ide_init_hwif = lopec_ide_init_hwif_ports;
+#endif
+#ifdef CONFIG_SERIAL
+#ifdef CONFIG_SERIAL_TEXT_DEBUG
+	ppc_md.progress = gen550_progress;
+#endif
+	ppc_md.early_serial_map = lopec_early_serial_map;
+#endif
+}