setup.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:5k
- /*
- * arch/mips/ddb5074/setup.c -- NEC DDB Vrc-5074 setup routines
- *
- * Copyright (C) 2000 Geert Uytterhoeven <geert@sonycom.com>
- * Sony Software Development Center Europe (SDCE), Brussels
- */
- #include <linux/config.h>
- #include <linux/init.h>
- #include <linux/kbd_ll.h>
- #include <linux/kernel.h>
- #include <linux/kdev_t.h>
- #include <linux/types.h>
- #include <linux/console.h>
- #include <linux/sched.h>
- #include <linux/mc146818rtc.h>
- #include <linux/pc_keyb.h>
- #include <linux/pci.h>
- #include <linux/ide.h>
- #include <asm/addrspace.h>
- #include <asm/bcache.h>
- #include <asm/keyboard.h>
- #include <asm/irq.h>
- #include <asm/reboot.h>
- #include <asm/gdb-stub.h>
- #include <asm/nile4.h>
- #include <asm/ddb5074.h>
- #ifdef CONFIG_REMOTE_DEBUG
- extern void rs_kgdb_hook(int);
- extern void breakpoint(void);
- #endif
- #if defined(CONFIG_SERIAL_CONSOLE)
- extern void console_setup(char *);
- #endif
- extern struct ide_ops std_ide_ops;
- extern struct rtc_ops ddb_rtc_ops;
- static void (*back_to_prom) (void) = (void (*)(void)) 0xbfc00000;
- static void ddb_machine_restart(char *command)
- {
- u32 t;
- /* PCI cold reset */
- t = nile4_in32(NILE4_PCICTRL + 4);
- t |= 0x40000000;
- nile4_out32(NILE4_PCICTRL + 4, t);
- /* CPU cold reset */
- t = nile4_in32(NILE4_CPUSTAT);
- t |= 1;
- nile4_out32(NILE4_CPUSTAT, t);
- /* Call the PROM */
- back_to_prom();
- }
- static void ddb_machine_halt(void)
- {
- printk("DDB Vrc-5074 halted.n");
- do {
- } while (1);
- }
- static void ddb_machine_power_off(void)
- {
- printk("DDB Vrc-5074 halted. Please turn off the power.n");
- do {
- } while (1);
- }
- extern void ddb_irq_setup(void);
- void (*board_time_init) (struct irqaction * irq);
- static void __init ddb_time_init(struct irqaction *irq)
- {
- /* set the clock to 1 Hz */
- nile4_out32(NILE4_T2CTRL, 1000000);
- /* enable the General-Purpose Timer */
- nile4_out32(NILE4_T2CTRL + 4, 0x00000001);
- /* reset timer */
- nile4_out32(NILE4_T2CNTR, 0);
- /* enable interrupt */
- nile4_enable_irq(NILE4_INT_GPT);
- i8259_setup_irq(nile4_to_irq(NILE4_INT_GPT), irq);
- change_cp0_status(ST0_IM,
- IE_IRQ0 | IE_IRQ1 | IE_IRQ2 | IE_IRQ3 | IE_IRQ4);
- }
- void __init ddb_setup(void)
- {
- extern int panic_timeout;
- irq_setup = ddb_irq_setup;
- mips_io_port_base = NILE4_PCI_IO_BASE;
- isa_slot_offset = NILE4_PCI_MEM_BASE;
- request_region(0x00, 0x20, "dma1");
- request_region(0x40, 0x20, "timer");
- request_region(0x70, 0x10, "rtc");
- request_region(0x80, 0x10, "dma page reg");
- request_region(0xc0, 0x20, "dma2");
- board_time_init = ddb_time_init;
- _machine_restart = ddb_machine_restart;
- _machine_halt = ddb_machine_halt;
- _machine_power_off = ddb_machine_power_off;
- #ifdef CONFIG_BLK_DEV_IDE
- ide_ops = &std_ide_ops;
- #endif
- rtc_ops = &ddb_rtc_ops;
- /* Reboot on panic */
- panic_timeout = 180;
- }
- #define USE_NILE4_SERIAL 0
- #if USE_NILE4_SERIAL
- #define ns16550_in(reg) nile4_in8((reg)*8)
- #define ns16550_out(reg, val) nile4_out8((reg)*8, (val))
- #else
- #define NS16550_BASE (NILE4_PCI_IO_BASE+0x03f8)
- static inline u8 ns16550_in(u32 reg)
- {
- return *(volatile u8 *) (NS16550_BASE + reg);
- }
- static inline void ns16550_out(u32 reg, u8 val)
- {
- *(volatile u8 *) (NS16550_BASE + reg) = val;
- }
- #endif
- #define NS16550_RBR 0
- #define NS16550_THR 0
- #define NS16550_DLL 0
- #define NS16550_IER 1
- #define NS16550_DLM 1
- #define NS16550_FCR 2
- #define NS16550_IIR 2
- #define NS16550_LCR 3
- #define NS16550_MCR 4
- #define NS16550_LSR 5
- #define NS16550_MSR 6
- #define NS16550_SCR 7
- #define NS16550_LSR_DR 0x01 /* Data ready */
- #define NS16550_LSR_OE 0x02 /* Overrun */
- #define NS16550_LSR_PE 0x04 /* Parity error */
- #define NS16550_LSR_FE 0x08 /* Framing error */
- #define NS16550_LSR_BI 0x10 /* Break */
- #define NS16550_LSR_THRE 0x20 /* Xmit holding register empty */
- #define NS16550_LSR_TEMT 0x40 /* Xmitter empty */
- #define NS16550_LSR_ERR 0x80 /* Error */
- void _serinit(void)
- {
- #if USE_NILE4_SERIAL
- ns16550_out(NS16550_LCR, 0x80);
- ns16550_out(NS16550_DLM, 0x00);
- ns16550_out(NS16550_DLL, 0x36); /* 9600 baud */
- ns16550_out(NS16550_LCR, 0x00);
- ns16550_out(NS16550_LCR, 0x03);
- ns16550_out(NS16550_FCR, 0x47);
- #else
- /* done by PMON */
- #endif
- }
- void _putc(char c)
- {
- while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_THRE));
- ns16550_out(NS16550_THR, c);
- if (c == 'n') {
- while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_THRE));
- ns16550_out(NS16550_THR, 'r');
- }
- }
- void _puts(const char *s)
- {
- char c;
- while ((c = *s++))
- _putc(c);
- }
- char _getc(void)
- {
- while (!(ns16550_in(NS16550_LSR) & NS16550_LSR_DR));
- return ns16550_in(NS16550_RBR);
- }
- int _testc(void)
- {
- return (ns16550_in(NS16550_LSR) & NS16550_LSR_DR) != 0;
- }
- /*
- * Hexadecimal 7-segment LED
- */
- void ddb5074_led_hex(int hex)
- {
- outb(hex, 0x80);
- }
- /*
- * LEDs D2 and D3, connected to the GPIO pins of the PMU in the ALi M1543
- */
- struct pci_dev *pci_pmu = NULL;
- void ddb5074_led_d2(int on)
- {
- u8 t;
- if (pci_pmu) {
- pci_read_config_byte(pci_pmu, 0x7e, &t);
- if (on)
- t &= 0x7f;
- else
- t |= 0x80;
- pci_write_config_byte(pci_pmu, 0x7e, t);
- }
- }
- void ddb5074_led_d3(int on)
- {
- u8 t;
- if (pci_pmu) {
- pci_read_config_byte(pci_pmu, 0x7e, &t);
- if (on)
- t &= 0xbf;
- else
- t |= 0x40;
- pci_write_config_byte(pci_pmu, 0x7e, t);
- }
- }