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-rw-r--r--arch/mips/alchemy/devboards/pb1500/board_setup.c163
1 files changed, 163 insertions, 0 deletions
diff --git a/arch/mips/alchemy/devboards/pb1500/board_setup.c b/arch/mips/alchemy/devboards/pb1500/board_setup.c
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+/*
+ * Copyright 2000, 2008 MontaVista Software Inc.
+ * Author: MontaVista Software, Inc. <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/init.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-pb1x00/pb1500.h>
+
+#include <prom.h>
+
+
+char irq_tab_alchemy[][5] __initdata = {
+ [12] = { -1, INTA, INTX, INTX, INTX }, /* IDSEL 12 - HPT370 */
+ [13] = { -1, INTA, INTB, INTC, INTD }, /* IDSEL 13 - PCI slot */
+};
+
+struct au1xxx_irqmap __initdata au1xxx_irq_map[] = {
+ { AU1500_GPIO_204, IRQF_TRIGGER_HIGH, 0 },
+ { AU1500_GPIO_201, IRQF_TRIGGER_LOW, 0 },
+ { AU1500_GPIO_202, IRQF_TRIGGER_LOW, 0 },
+ { AU1500_GPIO_203, IRQF_TRIGGER_LOW, 0 },
+ { AU1500_GPIO_205, IRQF_TRIGGER_LOW, 0 },
+};
+
+
+const char *get_system_type(void)
+{
+ return "Alchemy Pb1500";
+}
+
+void board_reset(void)
+{
+ /* Hit BCSR.RST_VDDI[SOFT_RESET] */
+ au_writel(0x00000000, PB1500_RST_VDDI);
+}
+
+void __init board_init_irq(void)
+{
+ au1xxx_setup_irqmap(au1xxx_irq_map, ARRAY_SIZE(au1xxx_irq_map));
+}
+
+void __init board_setup(void)
+{
+ u32 pin_func;
+ u32 sys_freqctrl, sys_clksrc;
+ char *argptr;
+
+ argptr = prom_getcmdline();
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+ argptr = strstr(argptr, "console=");
+ if (argptr == NULL) {
+ argptr = prom_getcmdline();
+ strcat(argptr, " console=ttyS0,115200");
+ }
+#endif
+
+#if defined(CONFIG_SOUND_AU1X00) && !defined(CONFIG_SOC_AU1000)
+ /* au1000 does not support vra, au1500 and au1100 do */
+ strcat(argptr, " au1000_audio=vra");
+ argptr = prom_getcmdline();
+#endif
+
+ sys_clksrc = sys_freqctrl = pin_func = 0;
+ /* Set AUX clock to 12 MHz * 8 = 96 MHz */
+ au_writel(8, SYS_AUXPLL);
+ au_writel(0, SYS_PINSTATERD);
+ udelay(100);
+
+#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
+
+ /* GPIO201 is input for PCMCIA card detect */
+ /* GPIO203 is input for PCMCIA interrupt request */
+ au_writel(au_readl(GPIO2_DIR) & ~((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 &= ~(SYS_CS_CUD | SYS_CS_DUD | SYS_CS_MUD_MASK |
+ SYS_CS_CUH | SYS_CS_DUH | SYS_CS_MUH_MASK);
+ au_writel(sys_clksrc, SYS_CLKSRC);
+
+ sys_freqctrl = au_readl(SYS_FREQCTRL0);
+ sys_freqctrl &= ~0xFFF00000;
+
+ sys_clksrc = au_readl(SYS_CLKSRC);
+ sys_clksrc &= ~(SYS_CS_CUD | SYS_CS_DUD | SYS_CS_MUD_MASK |
+ SYS_CS_CUH | SYS_CS_DUH | SYS_CS_MUH_MASK);
+
+ /* FREQ2 = aux/2 = 48 MHz */
+ sys_freqctrl |= (0 << SYS_FC_FRDIV2_BIT) | SYS_FC_FE2 | SYS_FC_FS2;
+ au_writel(sys_freqctrl, SYS_FREQCTRL0);
+
+ /*
+ * Route 48MHz FREQ2 into USB Host and/or Device
+ */
+ sys_clksrc |= SYS_CS_MUX_FQ2 << SYS_CS_MUH_BIT;
+ au_writel(sys_clksrc, SYS_CLKSRC);
+
+ pin_func = au_readl(SYS_PINFUNC) & ~SYS_PF_USB;
+ /* 2nd USB port is USB host */
+ pin_func |= SYS_PF_USB;
+ au_writel(pin_func, SYS_PINFUNC);
+#endif /* defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE) */
+
+#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 sys bus clock divider when IDLE state or no bus activity. */
+ au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL);
+
+ /* Enable the RTC if not already enabled */
+ if (!(au_readl(0xac000028) & 0x20)) {
+ printk(KERN_INFO "enabling clock ...\n");
+ au_writel((au_readl(0xac000028) | 0x20), 0xac000028);
+ }
+ /* Put the clock in BCD mode */
+ if (au_readl(0xac00002c) & 0x4) { /* reg B */
+ au_writel(au_readl(0xac00002c) & ~0x4, 0xac00002c);
+ au_sync();
+ }
+}
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