setup.c
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上传日期:2013-02-24
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文件大小:10k
- /*
- * arch/mips/ddb5476/setup.c -- NEC DDB Vrc-5476 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/time.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;
- extern struct kbd_ops std_kbd_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-5476 halted.n");
- while (1);
- }
- static void ddb_machine_power_off(void)
- {
- printk("DDB Vrc-5476 halted. Please turn off the power.n");
- while (1);
- }
- extern void ddb_irq_setup(void);
- static void __init ddb_time_init(struct irqaction *irq)
- {
- printk("ddb_time_init invoked.n");
- mips_counter_frequency = 83000000;
- }
- static void __init ddb_timer_setup(struct irqaction *irq)
- {
- unsigned int count;
- /* we are using the cpu counter for timer interrupts */
- i8259_setup_irq(0, irq);
- set_cp0_status(IE_IRQ5);
- /* to generate the first timer interrupt */
- count = read_32bit_cp0_register(CP0_COUNT);
- write_32bit_cp0_register(CP0_COMPARE, count + 1000);
- #if 0 /* the old way to do timer interrupt */
- /* set the clock to 100 Hz */
- nile4_out32(NILE4_T2CTRL, 830000);
- /* 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);
- #endif
- }
- static struct {
- struct resource dma1;
- struct resource pic1;
- struct resource timer;
- struct resource rtc;
- struct resource dma_page_reg;
- struct resource pic2;
- struct resource dma2;
- } ddb5476_ioport = {
- {
- "dma1", 0x00, 0x1f, IORESOURCE_BUSY}, {
- "pic1", 0x20, 0x3f, IORESOURCE_BUSY}, {
- "timer", 0x40, 0x5f, IORESOURCE_BUSY}, {
- "rtc", 0x70, 0x7f, IORESOURCE_BUSY}, {
- "dma page reg", 0x80, 0x8f, IORESOURCE_BUSY}, {
- "pic2", 0xa0, 0xbf, IORESOURCE_BUSY}, {
- "dma2", 0xc0, 0xdf, IORESOURCE_BUSY}
- };
- static struct {
- struct resource nile4;
- } ddb5476_iomem = {
- { "Nile 4", NILE4_BASE, NILE4_BASE + NILE4_SIZE - 1, IORESOURCE_BUSY}
- };
- 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;
- board_time_init = ddb_time_init;
- board_timer_setup = ddb_timer_setup;
- _machine_restart = ddb_machine_restart;
- _machine_halt = ddb_machine_halt;
- _machine_power_off = ddb_machine_power_off;
- /* request io port/mem resources */
- if (request_resource(&ioport_resource, &ddb5476_ioport.dma1) ||
- request_resource(&ioport_resource, &ddb5476_ioport.pic1) ||
- request_resource(&ioport_resource, &ddb5476_ioport.timer) ||
- request_resource(&ioport_resource, &ddb5476_ioport.rtc) ||
- request_resource(&ioport_resource,
- &ddb5476_ioport.dma_page_reg)
- || request_resource(&ioport_resource, &ddb5476_ioport.pic2)
- || request_resource(&ioport_resource, &ddb5476_ioport.dma2)
- || request_resource(&iomem_resource, &ddb5476_iomem.nile4)) {
- printk
- ("ddb_setup - requesting oo port resources failed.n");
- for (;;);
- }
- #ifdef CONFIG_BLK_DEV_IDE
- ide_ops = &std_ide_ops;
- #endif
- rtc_ops = &ddb_rtc_ops;
- #ifdef CONFIG_PC_KEYB
- kbd_ops = &std_kbd_ops;
- #endif
- /* Reboot on panic */
- panic_timeout = 180;
- /* [jsun] we need to set BAR0 so that SDRAM 0 appears at 0x0 in PCI */
- /* *(long*)0xbfa00218 = 0x8; */
- #ifdef CONFIG_FB
- conswitchp = &dummy_con;
- #endif
- /* board initialization stuff - non-fundamental, but need to be set
- * before kernel runs */
- /* setup I/O space */
- nile4_set_pdar(NILE4_PCIW0,
- PHYSADDR(NILE4_PCI_IO_BASE), 0x02000000, 32, 0, 0);
- nile4_set_pmr(NILE4_PCIINIT0, NILE4_PCICMD_IO, 0);
- /* map config space to 0xa8000000, 128MB */
- nile4_set_pdar(NILE4_PCIW1,
- PHYSADDR(NILE4_PCI_CFG_BASE), 0x08000000, 32, 0, 0);
- nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_CFG, 0x0);
- /* ----- M1543 PCI setup ------ */
- /* we know M1543 PCI-ISA controller is at addr:18 */
- /* xxxx1010 makes USB at addr:13 and PMU at addr:14 */
- *(volatile unsigned char *) 0xa8040072 &= 0xf0;
- *(volatile unsigned char *) 0xa8040072 |= 0xa;
- /* setup USB interrupt to IRQ 9, (bit 0:3 - 0001)
- * no IOCHRDY signal, (bit 7 - 1)
- * M1543C & M7101 VID and Subsys Device ID are read-only (bit 6 - 1)
- * Bypass USB Master INTAJ level to edge conversion (bit 4 - 0)
- */
- *(unsigned char *) 0xa8040074 = 0xc1;
- /* setup PMU(SCI to IRQ 10 (bit 0:3 - 0011)
- * SCI routing to IRQ 13 disabled (bit 7 - 1)
- * SCI interrupt level to edge conversion bypassed (bit 4 - 0)
- */
- *(unsigned char *) 0xa8040076 = 0x83;
- /* setup IDE controller
- * enable IDE controller (bit 6 - 1)
- * IDE IDSEL to be addr:24 (bit 4:5 - 11)
- * no IDE ATA Secondary Bus Signal Pad Control (bit 3 - 0)
- * no IDE ATA Primary Bus Signal Pad Control (bit 2 - 0)
- * primary IRQ is 14, secondary is 15 (bit 1:0 - 01
- */
- // *(unsigned char*)0xa8040058 = 0x71;
- // *(unsigned char*)0xa8040058 = 0x79;
- // *(unsigned char*)0xa8040058 = 0x74; // use SIRQ, primary tri-state
- *(unsigned char *) 0xa8040058 = 0x75; // primary tri-state
- #if 0
- /* this is not necessary if M5229 does not use SIRQ */
- *(unsigned char *) 0xa8040044 = 0x0d; // primary to IRQ 14
- *(unsigned char *) 0xa8040075 = 0x0d; // secondary to IRQ 14
- #endif
- /* enable IDE in the M5229 config register 0x50 (bit 0 - 1) */
- /* M5229 IDSEL is addr:24; see above setting */
- *(unsigned char *) 0xa9000050 |= 0x1;
- /* enable bus master (bit 2) and IO decoding (bit 0) */
- *(unsigned char *) 0xa9000004 |= 0x5;
- /* enable native, copied from arch/ppc/k2boot/head.S */
- /* TODO - need volatile, need to be portable */
- *(unsigned char *) 0xa9000009 = 0xff;
- /* ----- end of M1543 PCI setup ------ */
- /* ----- reset on-board ether chip ------ */
- *((volatile u32 *) 0xa8020004) |= 1; /* decode I/O */
- *((volatile u32 *) 0xa8020010) = 0; /* set BAR address */
- /* send reset command */
- *((volatile u32 *) 0xa6000000) = 1; /* do a soft reset */
- /* disable ether chip */
- *((volatile u32 *) 0xa8020004) = 0; /* disable any decoding */
- /* put it into sleep */
- *((volatile u32 *) 0xa8020040) = 0x80000000;
- /* ----- end of reset on-board ether chip ------ */
- /* ----- set pci window 1 to pci memory space -------- */
- nile4_set_pdar(NILE4_PCIW1,
- PHYSADDR(NILE4_PCI_MEM_BASE), 0x08000000, 32, 0, 0);
- // nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_MEM, 0);
- nile4_set_pmr(NILE4_PCIINIT1, NILE4_PCICMD_MEM, 0x08000000);
- }
- #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 ddb5476_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 ddb5476_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 ddb5476_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);
- }
- }