patch-2.4.19 linux-2.4.19/arch/mips/au1000/pb1500/setup.c

• Lines: 257
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/arch/mips/au1000/pb1500/setup.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -urN linux-2.4.18/arch/mips/au1000/pb1500/setup.c linux-2.4.19/arch/mips/au1000/pb1500/setup.c
@@ -0,0 +1,256 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ *	Alchemy Pb1000 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/mm.h>
+#include <linux/console.h>
+#include <linux/mc146818rtc.h>
+#include <linux/delay.h>
+
+#include <asm/cpu.h>
+#include <asm/bootinfo.h>
+#include <asm/irq.h>
+#include <asm/keyboard.h>
+#include <asm/mipsregs.h>
+#include <asm/reboot.h>
+#include <asm/pgtable.h>
+#include <asm/au1000.h>
+#include <asm/pb1500.h>
+
+#ifdef CONFIG_USB_OHCI
+// Enable the workaround for the OHCI DoneHead
+// register corruption problem.
+#define CONFIG_AU1000_OHCI_FIX
+#endif
+
+#if defined(CONFIG_AU1000_SERIAL_CONSOLE)
+extern void console_setup(char *, int *);
+char serial_console[20];
+#endif
+
+#ifdef CONFIG_BLK_DEV_INITRD
+extern unsigned long initrd_start, initrd_end;
+extern void * __rd_start, * __rd_end;
+#endif
+
+#ifdef CONFIG_BLK_DEV_IDE
+extern struct ide_ops std_ide_ops;
+extern struct ide_ops *ide_ops;
+#endif
+
+#ifdef CONFIG_RTC
+extern struct rtc_ops pb1500_rtc_ops;
+#endif
+
+void (*__wbflush) (void);
+extern char * __init prom_getcmdline(void);
+extern void au1000_restart(char *);
+extern void au1000_halt(void);
+extern void au1000_power_off(void);
+extern struct resource ioport_resource;
+extern struct resource iomem_resource;
+
+
+void au1500_wbflush(void)
+{
+	__asm__ volatile ("sync");
+}
+
+void __init au1500_setup(void)
+{
+	char *argptr;
+	u32 pin_func, static_cfg0;
+	u32 sys_freqctrl, sys_clksrc;
+	
+	argptr = prom_getcmdline();
+
+	/* NOTE: The memory map is established by YAMON 2.08+ */
+
+	/* Various early Au1500 Errata corrected by this */
+	set_cp0_config(1<<19); /* Config[OD] */
+
+#ifdef CONFIG_AU1000_SERIAL_CONSOLE
+	if ((argptr = strstr(argptr, "console=")) == NULL) {
+		argptr = prom_getcmdline();
+		strcat(argptr, " console=ttyS0,115200");
+	}
+#endif	  
+
+#ifdef CONFIG_SOUND_AU1000
+	strcat(argptr, " au1000_audio=vra");
+	argptr = prom_getcmdline();
+#endif
+
+        __wbflush = au1500_wbflush;
+	_machine_restart = au1000_restart;
+	_machine_halt = au1000_halt;
+	_machine_power_off = au1000_power_off;
+
+	// IO/MEM resources. 
+	set_io_port_base(0);
+	ioport_resource.start = 0x10000000;
+	ioport_resource.end = 0xffffffff;
+	iomem_resource.start = 0x10000000;
+	iomem_resource.end = 0xffffffff;
+
+#ifdef CONFIG_BLK_DEV_INITRD
+	ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
+	initrd_start = (unsigned long)&__rd_start;
+	initrd_end = (unsigned long)&__rd_end;
+#endif
+
+	// set AUX clock to 12MHz * 8 = 96 MHz
+	writel(8, SYS_AUXPLL);
+	outl(0, SYS_PINSTATERD);
+	udelay(100);
+
+#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1000_USB_DEVICE)
+#ifdef CONFIG_USB_OHCI
+	if ((argptr = strstr(argptr, "usb_ohci=")) == NULL) {
+	        char usb_args[80];
+		argptr = prom_getcmdline();
+		memset(usb_args, 0, sizeof(usb_args));
+		sprintf(usb_args, " usb_ohci=base:0x%x,len:0x%x,irq:%d",
+			USB_OHCI_BASE, USB_OHCI_LEN, AU1000_USB_HOST_INT);
+		strcat(argptr, usb_args);
+	}
+#endif
+
+	/* zero and disable FREQ2 */
+	sys_freqctrl = readl(SYS_FREQCTRL0);
+	sys_freqctrl &= ~0xFFF00000;
+	writel(sys_freqctrl, SYS_FREQCTRL0);
+
+	/* zero and disable USBH/USBD clocks */
+	sys_clksrc = readl(SYS_CLKSRC);
+	sys_clksrc &= ~0x00007FE0;
+	writel(sys_clksrc, SYS_CLKSRC);
+
+	sys_freqctrl = readl(SYS_FREQCTRL0);
+	sys_freqctrl &= ~0xFFF00000;
+
+	sys_clksrc = readl(SYS_CLKSRC);
+	sys_clksrc &= ~0x00007FE0;
+
+	// FREQ2 = aux/2 = 48 MHz
+	sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20));
+	writel(sys_freqctrl, SYS_FREQCTRL0);
+
+	/*
+	 * Route 48MHz FREQ2 into USB Host and/or Device
+	 */
+#ifdef CONFIG_USB_OHCI
+	sys_clksrc |= ((4<<12) | (0<<11) | (0<<10));
+#endif
+#ifdef CONFIG_AU1000_USB_DEVICE
+	sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
+#endif
+	writel(sys_clksrc, SYS_CLKSRC);
+
+
+	pin_func = readl(SYS_PINFUNC) & (u32)(~0x8000);
+#ifndef CONFIG_AU1000_USB_DEVICE
+	// 2nd USB port is USB host
+	pin_func |= 0x8000;
+#endif
+	writel(pin_func, SYS_PINFUNC);
+#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1000_USB_DEVICE)
+
+
+#ifdef CONFIG_USB_OHCI
+	// enable host controller and wait for reset done
+	writel(0x08, USB_HOST_CONFIG);
+	udelay(1000);
+	writel(0x0c, USB_HOST_CONFIG);
+	udelay(1000);
+	readl(USB_HOST_CONFIG);
+	while (!(readl(USB_HOST_CONFIG) & 0x10))
+	    ;
+	readl(USB_HOST_CONFIG);
+#endif
+	
+#ifdef CONFIG_FB
+	conswitchp = &dummy_con;
+#endif
+
+#ifdef CONFIG_FB_E1356
+	if ((argptr = strstr(argptr, "video=")) == NULL) {
+		argptr = prom_getcmdline();
+		strcat(argptr, " video=e1356fb:system:pb1500,mmunalign:1");
+	}
+#endif // CONFIG_FB_E1356
+
+#ifndef CONFIG_SERIAL_NONSTANDARD
+	/* don't touch the default serial console */
+	writel(0, UART0_ADDR + UART_CLK);
+#endif
+	writel(0, UART3_ADDR + UART_CLK);
+
+#ifdef CONFIG_BLK_DEV_IDE
+	ide_ops = &std_ide_ops;
+#endif
+
+#ifdef CONFIG_PCI
+	// Setup PCI bus controller
+	writel(0, Au1500_PCI_CMEM);
+	writel(0x00003fff, Au1500_CFG_BASE);
+	writel(0xf, Au1500_PCI_CFG);
+	writel(0xf0000000, Au1500_PCI_MWMASK_DEV);
+	writel(0, Au1500_PCI_MWBASE_REV_CCL);
+	writel(0x02a00356, Au1500_PCI_STATCMD);
+	writel(0x00003c04, Au1500_PCI_HDRTYPE);	
+	writel(0x00000008, Au1500_PCI_MBAR);
+	au_sync();
+#endif
+
+	while (readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_E0S);
+	writel(SYS_CNTRL_E0 | SYS_CNTRL_EN0, SYS_COUNTER_CNTRL);
+	au_sync();
+	while (readl(SYS_COUNTER_CNTRL) & SYS_CNTRL_T0S);
+	outl(0, SYS_TOYTRIM);
+
+	/* Enable BCLK switching */
+	writel(0x00000060, 0xb190003c);
+
+#ifdef CONFIG_RTC
+	rtc_ops = &pb1500_rtc_ops;
+	// Enable the RTC if not already enabled 
+	if (!(readb(0xac000028) & 0x20)) {
+		writeb(readb(0xac000028) | 0x20, 0xac000028);
+	}
+	// Put the clock in BCD mode
+	if (readb(0xac00002C) & 0x4) { /* reg B */
+		writeb(readb(0xac00002c) & ~0x4, 0xac00002c);
+		au_sync();
+	}
+#endif
+}