/*  * linux/arch/sh/kernel/setup_7751se.c * * Copyright (C) 2000  Kazumoto Kojima * * Hitachi SolutionEngine Support. * * Modified for 7751 Solution Engine by * Ian da Silva and Jeremy Siegel, 2001. */#include <linux/config.h>#include <linux/init.h>#include <linux/irq.h>#include <linux/hdreg.h>#include <linux/ide.h>#include <asm/io.h>#include <asm/se7751/se7751.h>#ifdef CONFIG_SH_KGDB#include <asm/kgdb.h>#endif/* * Configure the Super I/O chip */#if 0/* Leftover code from regular Solution Engine, for reference. *//* The SH7751 Solution Engine has a different SuperIO. */static void __init smsc_config(int index, int data){	outb_p(index, INDEX_PORT);	outb_p(data, DATA_PORT);}static void __init init_smsc(void){	outb_p(CONFIG_ENTER, CONFIG_PORT);	outb_p(CONFIG_ENTER, CONFIG_PORT);	/* FDC */	smsc_config(CURRENT_LDN_INDEX, LDN_FDC);	smsc_config(ACTIVATE_INDEX, 0x01);	smsc_config(IRQ_SELECT_INDEX, 6); /* IRQ6 */	/* IDE1 */	smsc_config(CURRENT_LDN_INDEX, LDN_IDE1);	smsc_config(ACTIVATE_INDEX, 0x01);	smsc_config(IRQ_SELECT_INDEX, 14); /* IRQ14 */	/* AUXIO (GPIO): to use IDE1 */	smsc_config(CURRENT_LDN_INDEX, LDN_AUXIO);	smsc_config(GPIO46_INDEX, 0x00); /* nIOROP */	smsc_config(GPIO47_INDEX, 0x00); /* nIOWOP */	/* COM1 */	smsc_config(CURRENT_LDN_INDEX, LDN_COM1);	smsc_config(ACTIVATE_INDEX, 0x01);	smsc_config(IO_BASE_HI_INDEX, 0x03);	smsc_config(IO_BASE_LO_INDEX, 0xf8);	smsc_config(IRQ_SELECT_INDEX, 4); /* IRQ4 */	/* COM2 */	smsc_config(CURRENT_LDN_INDEX, LDN_COM2);	smsc_config(ACTIVATE_INDEX, 0x01);	smsc_config(IO_BASE_HI_INDEX, 0x02);	smsc_config(IO_BASE_LO_INDEX, 0xf8);	smsc_config(IRQ_SELECT_INDEX, 3); /* IRQ3 */	/* RTC */	smsc_config(CURRENT_LDN_INDEX, LDN_RTC);	smsc_config(ACTIVATE_INDEX, 0x01);	smsc_config(IRQ_SELECT_INDEX, 8); /* IRQ8 */	/* XXX: PARPORT, KBD, and MOUSE will come here... */	outb_p(CONFIG_EXIT, CONFIG_PORT);}#endifconst char *get_system_type(void){	return "7751 SolutionEngine";}#ifdef CONFIG_SH_KGDBstatic int kgdb_uart_setup(void);static struct kgdb_sermap kgdb_uart_sermap = { "ttyS", 0, kgdb_uart_setup, NULL };#endif /* * Initialize the board */void __init platform_setup(void){	/* Call init_smsc() replacement to set up SuperIO. */	/* XXX: RTC setting comes here */#ifdef CONFIG_SH_KGDB	kgdb_register_sermap(&kgdb_uart_sermap);#endif}/********************************************************************* * Currently a hack (e.g. does not interact well w/serial.c, lots of * * hardcoded stuff) but may be useful if SCI/F needs debugging.      * * Mostly copied from x86 code (see files asm-i386/kgdb_local.h and  * * arch/i386/lib/kgdb_serial.c).                                     * *********************************************************************/#ifdef CONFIG_SH_KGDB#include <linux/types.h>#include <linux/serial.h>#include <linux/serialP.h>#include <linux/serial_reg.h>#define COM1_PORT 0x3f8  /* Base I/O address */#define COM1_IRQ  4      /* IRQ not used yet */#define COM2_PORT 0x2f8  /* Base I/O address */#define COM2_IRQ  3      /* IRQ not used yet */#define SB_CLOCK 1843200 /* Serial baud clock */#define SB_BASE (SB_CLOCK/16)#define SB_MCR UART_MCR_OUT2 | UART_MCR_DTR | UART_MCR_RTSstruct uart_port {	int base;};#define UART_NPORTS 2struct uart_port uart_ports[] = {	{ COM1_PORT },	{ COM2_PORT },};struct uart_port *kgdb_uart_port;#define UART_IN(reg)	inb_p(kgdb_uart_port->base + reg)#define UART_OUT(reg,v)	outb_p((v), kgdb_uart_port->base + reg)/* Basic read/write functions for the UART */#define UART_LSR_RXCERR    (UART_LSR_BI | UART_LSR_FE | UART_LSR_PE)static int kgdb_uart_getchar(void){	int lsr;	int c = -1;	while (c == -1) {		lsr = UART_IN(UART_LSR);		if (lsr & UART_LSR_DR) 			c = UART_IN(UART_RX);		if ((lsr & UART_LSR_RXCERR))			c = -1;	}	return c;}static void kgdb_uart_putchar(int c){	while ((UART_IN(UART_LSR) & UART_LSR_THRE) == 0)		;	UART_OUT(UART_TX, c);}/* * Initialize UART to configured/requested values. * (But we don't interrupts yet, or interact w/serial.c) */static int kgdb_uart_setup(void){	int port;	int lcr = 0;	int bdiv = 0;	if (kgdb_portnum >= UART_NPORTS) {		KGDB_PRINTK("uart port %d invalid.\n", kgdb_portnum);		return -1;	}	kgdb_uart_port = &uart_ports[kgdb_portnum];	/* Init sequence from gdb_hook_interrupt */	UART_IN(UART_RX);	UART_OUT(UART_IER, 0);	UART_IN(UART_RX);	/* Serial driver comments say */	UART_IN(UART_IIR);	/* this clears interrupt regs */	UART_IN(UART_MSR);	/* Figure basic LCR values */	switch (kgdb_bits) {	case '7':		lcr |= UART_LCR_WLEN7;		break;	default: case '8': 		lcr |= UART_LCR_WLEN8;		break;	}	switch (kgdb_parity) {	case 'O':		lcr |= UART_LCR_PARITY;		break;	case 'E':		lcr |= (UART_LCR_PARITY | UART_LCR_EPAR);		break;	default: break;	}	/* Figure the baud rate divisor */	bdiv = (SB_BASE/kgdb_baud);		/* Set the baud rate and LCR values */	UART_OUT(UART_LCR, (lcr | UART_LCR_DLAB));	UART_OUT(UART_DLL, (bdiv & 0xff));	UART_OUT(UART_DLM, ((bdiv >> 8) & 0xff));	UART_OUT(UART_LCR, lcr);	/* Set the MCR */	UART_OUT(UART_MCR, SB_MCR);	/* Turn off FIFOs for now */	UART_OUT(UART_FCR, 0);	/* Setup complete: initialize function pointers */	kgdb_getchar = kgdb_uart_getchar;	kgdb_putchar = kgdb_uart_putchar;	return 0;}#endif /* CONFIG_SH_KGDB */