it8172_setup.c
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上传日期:2013-02-24
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- /*
- *
- * BRIEF MODULE DESCRIPTION
- * IT8172/QED5231 board setup.
- *
- * Copyright 2000 MontaVista Software Inc.
- * Author: MontaVista Software, Inc.
- * ppopov@mvista.com or source@mvista.com
- *
- * 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.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
- * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
- */
- #include <linux/config.h>
- #include <linux/init.h>
- #include <linux/sched.h>
- #include <linux/ioport.h>
- #include <linux/console.h>
- #include <linux/mc146818rtc.h>
- #include <linux/serial_reg.h>
- #include <asm/cpu.h>
- #include <asm/bootinfo.h>
- #include <asm/irq.h>
- #include <asm/mipsregs.h>
- #include <asm/reboot.h>
- #include <asm/it8172/it8172.h>
- #include <asm/it8712.h>
- #ifdef CONFIG_PC_KEYB
- #include <asm/keyboard.h>
- #endif
- #if defined(CONFIG_SERIAL_CONSOLE) || defined(CONFIG_PROM_CONSOLE)
- extern void console_setup(char *, int *);
- char serial_console[20];
- #endif
- extern struct rtc_ops it8172_rtc_ops;
- extern struct resource ioport_resource;
- extern unsigned long mips_io_port_base;
- #ifdef CONFIG_BLK_DEV_IDE
- extern struct ide_ops std_ide_ops;
- extern struct ide_ops *ide_ops;
- #endif
- #ifdef CONFIG_PC_KEYB
- extern struct kbd_ops std_kbd_ops;
- int init_8712_keyboard(void);
- #endif
- extern int SearchIT8712(void);
- extern void InitLPCInterface(void);
- extern char * __init prom_getcmdline(void);
- extern void it8172_restart(char *command);
- extern void it8172_halt(void);
- extern void it8172_power_off(void);
- #ifdef CONFIG_IT8172_REVC
- struct {
- struct resource ram;
- struct resource pci_mem;
- struct resource pci_io;
- struct resource flash;
- struct resource boot;
- } it8172_resources = {
- { "RAM", 0, 0, IORESOURCE_MEM }, /* to be initted */
- { "PCI Mem", 0x10000000, 0x13FFFFFF, IORESOURCE_MEM },
- { "PCI I/O", 0x14000000, 0x17FFFFFF },
- { "Flash", 0x08000000, 0x0CFFFFFF },
- { "Boot ROM", 0x1FC00000, 0x1FFFFFFF }
- };
- #else
- struct {
- struct resource ram;
- struct resource pci_mem0;
- struct resource pci_mem1;
- struct resource pci_io;
- struct resource pci_mem2;
- struct resource pci_mem3;
- struct resource flash;
- struct resource boot;
- } it8172_resources = {
- { "RAM", 0, 0, IORESOURCE_MEM }, /* to be initted */
- { "PCI Mem0", 0x0C000000, 0x0FFFFFFF, IORESOURCE_MEM },
- { "PCI Mem1", 0x10000000, 0x13FFFFFF, IORESOURCE_MEM },
- { "PCI I/O", 0x14000000, 0x17FFFFFF },
- { "PCI Mem2", 0x1A000000, 0x1BFFFFFF, IORESOURCE_MEM },
- { "PCI Mem3", 0x1C000000, 0x1FBFFFFF, IORESOURCE_MEM },
- { "Flash", 0x08000000, 0x0CFFFFFF },
- { "Boot ROM", 0x1FC00000, 0x1FFFFFFF }
- };
- #endif
- void __init it8172_init_ram_resource(unsigned long memsize)
- {
- it8172_resources.ram.end = memsize;
- }
- void __init it8172_setup(void)
- {
- unsigned short dsr;
- char *argptr;
- argptr = prom_getcmdline();
- #ifdef CONFIG_SERIAL_CONSOLE
- if ((argptr = strstr(argptr, "console=")) == NULL) {
- argptr = prom_getcmdline();
- strcat(argptr, " console=ttyS0,115200");
- }
- #endif
- clear_cp0_status(ST0_FR);
- rtc_ops = &it8172_rtc_ops;
- _machine_restart = it8172_restart;
- _machine_halt = it8172_halt;
- _machine_power_off = it8172_power_off;
- /*
- * IO/MEM resources.
- *
- * revisit this area.
- */
- mips_io_port_base = KSEG1;
- ioport_resource.start = it8172_resources.pci_io.start;
- ioport_resource.end = it8172_resources.pci_io.end;
- #ifdef CONFIG_IT8172_REVC
- iomem_resource.start = it8172_resources.pci_mem.start;
- iomem_resource.end = it8172_resources.pci_mem.end;
- #else
- iomem_resource.start = it8172_resources.pci_mem0.start;
- iomem_resource.end = it8172_resources.pci_mem3.end;
- #endif
- #ifdef CONFIG_BLK_DEV_INITRD
- ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
- #endif
- /*
- * Pull enabled devices out of standby
- */
- IT_IO_READ16(IT_PM_DSR, dsr);
- #ifdef CONFIG_SOUND_IT8172
- dsr &= ~IT_PM_DSR_ACSB;
- #else
- dsr |= IT_PM_DSR_ACSB;
- #endif
- #ifdef CONFIG_BLK_DEV_IT8172
- dsr &= ~IT_PM_DSR_IDESB;
- ide_ops = &std_ide_ops;
- #else
- dsr |= IT_PM_DSR_IDESB;
- #endif
- IT_IO_WRITE16(IT_PM_DSR, dsr);
- #ifdef CONFIG_FB
- conswitchp = &dummy_con;
- #endif
- InitLPCInterface();
- #ifdef CONFIG_MIPS_ITE8172
- if (SearchIT8712()) {
- printk("Found IT8712 Super IOn");
- // enable IT8712 serial port
- LPCSetConfig(LDN_SERIAL1, 0x30, 0x01); /* enable */
- LPCSetConfig(LDN_SERIAL1, 0x23, 0x01); /* clock selection */
- #ifdef CONFIG_PC_KEYB
- if (init_8712_keyboard()) {
- printk("Unable to initialize keyboardn");
- LPCSetConfig(LDN_KEYBOARD, 0x30, 0x0); /* disable keyboard */
- }
- else {
- LPCSetConfig(LDN_KEYBOARD, 0x30, 0x1); /* enable keyboard */
- LPCSetConfig(LDN_KEYBOARD, 0xf0, 0x2);
- LPCSetConfig(LDN_KEYBOARD, 0x71, 0x3);
- LPCSetConfig(LDN_MOUSE, 0x30, 0x1); /* enable mouse */
- LPCSetConfig(0x4, 0x30, 0x1);
- LPCSetConfig(0x4, 0xf4, LPCGetConfig(0x4, 0xf4) | 0x80);
- if ((LPCGetConfig(LDN_KEYBOARD, 0x30) == 0) ||
- (LPCGetConfig(LDN_MOUSE, 0x30) == 0))
- printk("Error: keyboard or mouse not enabledn");
- kbd_ops = &std_kbd_ops;
- }
- #endif
- }
- else {
- printk("IT8712 Super IO not foundn");
- }
- #endif
- #ifdef CONFIG_IT8172_CIR
- {
- unsigned long data;
- //printk("Enabling CIR0n");
- IT_IO_READ16(IT_PM_DSR, data);
- data &= ~IT_PM_DSR_CIR0SB;
- IT_IO_WRITE16(IT_PM_DSR, data);
- //printk("DSR register: %xn", (unsigned)IT_IO_READ16(IT_PM_DSR, data));
- }
- #endif
- #ifdef CONFIG_IT8172_SCR0
- {
- unsigned i;
- /* Enable Smart Card Reader 0 */
- /* First power it up */
- IT_IO_READ16(IT_PM_DSR, i);
- i &= ~IT_PM_DSR_SCR0SB;
- IT_IO_WRITE16(IT_PM_DSR, i);
- /* Then initialize its registers */
- outb(( IT_SCR_SFR_GATE_UART_OFF << IT_SCR_SFR_GATE_UART_BIT
- |IT_SCR_SFR_FET_CHARGE_213_US << IT_SCR_SFR_FET_CHARGE_BIT
- |IT_SCR_SFR_CARD_FREQ_3_5_MHZ << IT_SCR_SFR_CARD_FREQ_BIT
- |IT_SCR_SFR_FET_ACTIVE_INVERT << IT_SCR_SFR_FET_ACTIVE_BIT
- |IT_SCR_SFR_ENABLE_ON << IT_SCR_SFR_ENABLE_BIT),
- IT8172_PCI_IO_BASE + IT_SCR0_BASE + IT_SCR_SFR);
- outb(IT_SCR_SCDR_RESET_MODE_ASYNC << IT_SCR_SCDR_RESET_MODE_BIT,
- IT8172_PCI_IO_BASE + IT_SCR0_BASE + IT_SCR_SCDR);
- }
- #endif /* CONFIG_IT8172_SCR0 */
- #ifdef CONFIG_IT8172_SCR1
- {
- unsigned i;
- /* Enable Smart Card Reader 1 */
- /* First power it up */
- IT_IO_READ16(IT_PM_DSR, i);
- i &= ~IT_PM_DSR_SCR1SB;
- IT_IO_WRITE16(IT_PM_DSR, i);
- /* Then initialize its registers */
- outb(( IT_SCR_SFR_GATE_UART_OFF << IT_SCR_SFR_GATE_UART_BIT
- |IT_SCR_SFR_FET_CHARGE_213_US << IT_SCR_SFR_FET_CHARGE_BIT
- |IT_SCR_SFR_CARD_FREQ_3_5_MHZ << IT_SCR_SFR_CARD_FREQ_BIT
- |IT_SCR_SFR_FET_ACTIVE_INVERT << IT_SCR_SFR_FET_ACTIVE_BIT
- |IT_SCR_SFR_ENABLE_ON << IT_SCR_SFR_ENABLE_BIT),
- IT8172_PCI_IO_BASE + IT_SCR1_BASE + IT_SCR_SFR);
- outb(IT_SCR_SCDR_RESET_MODE_ASYNC << IT_SCR_SCDR_RESET_MODE_BIT,
- IT8172_PCI_IO_BASE + IT_SCR1_BASE + IT_SCR_SCDR);
- }
- #endif /* CONFIG_IT8172_SCR1 */
- }
- #ifdef CONFIG_PC_KEYB
- /*
- * According to the ITE Special BIOS Note for waking up the
- * keyboard controller...
- */
- int init_8712_keyboard()
- {
- unsigned int cmd_port = 0x14000064;
- unsigned int data_port = 0x14000060;
- unsigned char data;
- int i;
- outb(0xaa, cmd_port); /* send self-test cmd */
- i = 0;
- while (!(inb(cmd_port) & 0x1)) { /* wait output buffer full */
- i++;
- if (i > 0xffffff)
- return 1;
- }
- data = inb(data_port);
- outb(0xcb, cmd_port); /* set ps2 mode */
- while (inb(cmd_port) & 0x2) { /* wait while input buffer full */
- i++;
- if (i > 0xffffff)
- return 1;
- }
- outb(0x01, data_port);
- while (inb(cmd_port) & 0x2) { /* wait while input buffer full */
- i++;
- if (i > 0xffffff)
- return 1;
- }
- outb(0x60, cmd_port); /* write 8042 command byte */
- while (inb(cmd_port) & 0x2) { /* wait while input buffer full */
- i++;
- if (i > 0xffffff)
- return 1;
- }
- outb(0x45, data_port); /* at interface, keyboard enabled, system flag */
- while (inb(cmd_port) & 0x2) { /* wait while input buffer full */
- i++;
- if (i > 0xffffff)
- return 1;
- }
- outb(0xae, cmd_port); /* enable interface */
- return 0;
- }
- #endif