patch-2.4.22 linux-2.4.22/arch/mips/au1000/pb1500/board_setup.c
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- Lines: 152
- Date:
2003-08-25 04:44:39.000000000 -0700
- Orig file:
linux-2.4.21/arch/mips/au1000/pb1500/board_setup.c
- Orig date:
1969-12-31 16:00:00.000000000 -0800
diff -urN linux-2.4.21/arch/mips/au1000/pb1500/board_setup.c linux-2.4.22/arch/mips/au1000/pb1500/board_setup.c
@@ -0,0 +1,151 @@
+/*
+ *
+ * BRIEF MODULE DESCRIPTION
+ * Alchemy Pb1500 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
+
+#ifdef CONFIG_RTC
+extern struct rtc_ops pb1500_rtc_ops;
+#endif
+
+void __init board_setup(void)
+{
+ u32 pin_func;
+ u32 sys_freqctrl, sys_clksrc;
+
+
+ // set AUX clock to 12MHz * 8 = 96 MHz
+ au_writel(8, SYS_AUXPLL);
+ au_writel(0, SYS_PINSTATERD);
+ udelay(100);
+
+#if defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+
+ /* GPIO201 is input for PCMCIA card detect */
+ /* GPIO203 is input for PCMCIA interrupt request */
+ au_writel(au_readl(GPIO2_DIR) & (u32)(~((1<<1)|(1<<3))), GPIO2_DIR);
+
+ /* zero and disable FREQ2 */
+ sys_freqctrl = au_readl(SYS_FREQCTRL0);
+ sys_freqctrl &= ~0xFFF00000;
+ au_writel(sys_freqctrl, SYS_FREQCTRL0);
+
+ /* zero and disable USBH/USBD clocks */
+ sys_clksrc = au_readl(SYS_CLKSRC);
+ sys_clksrc &= ~0x00007FE0;
+ au_writel(sys_clksrc, SYS_CLKSRC);
+
+ sys_freqctrl = au_readl(SYS_FREQCTRL0);
+ sys_freqctrl &= ~0xFFF00000;
+
+ sys_clksrc = au_readl(SYS_CLKSRC);
+ sys_clksrc &= ~0x00007FE0;
+
+ // FREQ2 = aux/2 = 48 MHz
+ sys_freqctrl |= ((0<<22) | (1<<21) | (1<<20));
+ au_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_AU1X00_USB_DEVICE
+ sys_clksrc |= ((4<<7) | (0<<6) | (0<<5));
+#endif
+ au_writel(sys_clksrc, SYS_CLKSRC);
+
+
+ pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
+#ifndef CONFIG_AU1X00_USB_DEVICE
+ // 2nd USB port is USB host
+ pin_func |= 0x8000;
+#endif
+ au_writel(pin_func, SYS_PINFUNC);
+#endif // defined (CONFIG_USB_OHCI) || defined (CONFIG_AU1X00_USB_DEVICE)
+
+
+
+#ifdef CONFIG_PCI
+ // Setup PCI bus controller
+ au_writel(0, Au1500_PCI_CMEM);
+ au_writel(0x00003fff, Au1500_CFG_BASE);
+#if defined(__MIPSEB__)
+ au_writel(0xf | (2<<6) | (1<<4), Au1500_PCI_CFG);
+#else
+ au_writel(0xf, Au1500_PCI_CFG);
+#endif
+ au_writel(0xf0000000, Au1500_PCI_MWMASK_DEV);
+ au_writel(0, Au1500_PCI_MWBASE_REV_CCL);
+ au_writel(0x02a00356, Au1500_PCI_STATCMD);
+ au_writel(0x00003c04, Au1500_PCI_HDRTYPE);
+ au_writel(0x00000008, Au1500_PCI_MBAR);
+ au_sync();
+#endif
+
+ /* Enable BCLK switching */
+ au_writel(0x00000060, 0xb190003c);
+
+#ifdef CONFIG_RTC
+ rtc_ops = &pb1500_rtc_ops;
+ // Enable the RTC if not already enabled
+ if (!(au_readl(0xac000028) & 0x20)) {
+ printk("enabling clock ...\n");
+ au_writel((au_readl(0xac000028) | 0x20), 0xac000028);
+ }
+ // Put the clock in BCD mode
+ if (readl(0xac00002C) & 0x4) { /* reg B */
+ au_writel(au_readl(0xac00002c) & ~0x4, 0xac00002c);
+ au_sync();
+ }
+#endif
+}
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