From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- arch/mips/au1000/csb250/Makefile | 8 ++ arch/mips/au1000/csb250/board_setup.c | 239 ++++++++++++++++++++++++++++++++++ arch/mips/au1000/csb250/init.c | 95 ++++++++++++++ arch/mips/au1000/csb250/irqmap.c | 60 +++++++++ 4 files changed, 402 insertions(+) create mode 100644 arch/mips/au1000/csb250/Makefile create mode 100644 arch/mips/au1000/csb250/board_setup.c create mode 100644 arch/mips/au1000/csb250/init.c create mode 100644 arch/mips/au1000/csb250/irqmap.c (limited to 'arch/mips/au1000/csb250') diff --git a/arch/mips/au1000/csb250/Makefile b/arch/mips/au1000/csb250/Makefile new file mode 100644 index 0000000..c0c4dcd --- /dev/null +++ b/arch/mips/au1000/csb250/Makefile @@ -0,0 +1,8 @@ +# +# Copyright 2002 Cogent Computer Systems +# dan@embeddededge.com +# +# Makefile for the Cogent CSB250 Au1500 board. Copied from Pb1500. +# + +obj-y := init.o board_setup.o irqmap.o diff --git a/arch/mips/au1000/csb250/board_setup.c b/arch/mips/au1000/csb250/board_setup.c new file mode 100644 index 0000000..90426ea --- /dev/null +++ b/arch/mips/au1000/csb250/board_setup.c @@ -0,0 +1,239 @@ +/* + * + * BRIEF MODULE DESCRIPTION + * Cogent CSB250 board setup. + * + * Copyright 2002 Cogent Computer Systems, Inc. + * dan@embeddededge.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 +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +extern int (*board_pci_idsel)(unsigned int devsel, int assert); +int csb250_pci_idsel(unsigned int devsel, int assert); + +void __init board_setup(void) +{ + u32 pin_func, pin_val; + 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) + + /* Configure GPIO2....it's used by PCI among other things. + */ + + /* Make everything but GP200 (PCI RST) an input until we get + * the pins set correctly. + */ + au_writel(0x00000001, GPIO2_DIR); + + /* Set the pins used for output. + * A zero bit will leave PCI reset, LEDs off, power up USB, + * IDSEL disabled. + */ + pin_val = ((3 << 30) | (7 << 19) | (1 << 17) | (1 << 16)); + au_writel(pin_val, GPIO2_OUTPUT); + + /* Set the output direction. + */ + pin_val = ((3 << 14) | (7 << 3) | (1 << 1) | (1 << 0)); + au_writel(pin_val, GPIO2_DIR); + +#ifdef CONFIG_PCI + /* Use FREQ1 for the PCI output clock. We use the + * CPU clock of 384 MHz divided by 12 to get 32 MHz PCI. + * If Michael changes the CPU speed, we need to adjust + * that here as well :-). + */ + + /* zero and disable FREQ1 + */ + sys_freqctrl = au_readl(SYS_FREQCTRL0); + sys_freqctrl &= ~0x000ffc00; + au_writel(sys_freqctrl, SYS_FREQCTRL0); + + /* zero and disable PCI clock + */ + sys_clksrc = au_readl(SYS_CLKSRC); + sys_clksrc &= ~0x000f8000; + au_writel(sys_clksrc, SYS_CLKSRC); + + /* Get current values (which really should match above). + */ + sys_freqctrl = au_readl(SYS_FREQCTRL0); + sys_freqctrl &= ~0x000ffc00; + + sys_clksrc = au_readl(SYS_CLKSRC); + sys_clksrc &= ~0x000f8000; + + /* FREQ1 = cpu/12 = 32 MHz + */ + sys_freqctrl |= ((5<<12) | (1<<11) | (0<<10)); + au_writel(sys_freqctrl, SYS_FREQCTRL0); + + /* Just connect the clock without further dividing. + */ + sys_clksrc |= ((3<<17) | (0<<16) | (0<<15)); + au_writel(sys_clksrc, SYS_CLKSRC); + + udelay(1); + + /* Now that clocks should be running, take PCI out of reset. + */ + pin_val = au_readl(GPIO2_OUTPUT); + pin_val |= ((1 << 16) | 1); + au_writel(pin_val, GPIO2_OUTPUT); + + // Setup PCI bus controller + au_writel(0, Au1500_PCI_CMEM); + au_writel(0x00003fff, Au1500_CFG_BASE); + + /* We run big endian without any of the software byte swapping, + * so configure the PCI bridge to help us out. + */ + au_writel(0xf | (2<<6) | (1<<5) | (1<<4), Au1500_PCI_CFG); + + 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(); + + board_pci_idsel = csb250_pci_idsel; +#endif + + /* Enable sys bus clock divider when IDLE state or no bus activity. */ + au_writel(au_readl(SYS_POWERCTRL) | (0x3 << 5), SYS_POWERCTRL); + +#ifdef CONFIG_RTC + // 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 +} + +/* The IDSEL is selected in the GPIO2 register. We will make device + * 12 appear in slot 0 and device 13 appear in slot 1. + */ +int +csb250_pci_idsel(unsigned int devsel, int assert) +{ + int retval; + unsigned int gpio2_pins; + + retval = 1; + + /* First, disable both selects, then assert the one requested. + */ + au_writel(0xc000c000, GPIO2_OUTPUT); + au_sync(); + + if (assert) { + if (devsel == 12) + gpio2_pins = 0x40000000; + else if (devsel == 13) + gpio2_pins = 0x80000000; + else { + gpio2_pins = 0xc000c000; + retval = 0; + } + au_writel(gpio2_pins, GPIO2_OUTPUT); + } + au_sync(); + + return retval; +} diff --git a/arch/mips/au1000/csb250/init.c b/arch/mips/au1000/csb250/init.c new file mode 100644 index 0000000..4320057 --- /dev/null +++ b/arch/mips/au1000/csb250/init.c @@ -0,0 +1,95 @@ +/* + * + * BRIEF MODULE DESCRIPTION + * Cogent CSB250 board setup + * + * Copyright 2002 Cogent Computer Systems, Inc. + * dan@embeddededge.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 +#include +#include +#include +#include +#include +#include +#include +#include + +int prom_argc; +char **prom_argv, **prom_envp; +extern void __init prom_init_cmdline(void); +extern char *prom_getenv(char *envname); + +/* When we get initrd working someday......... +*/ +int my_initrd_start, my_initrd_size; + +/* Start arguments and environment. +*/ +static char *csb_env[2]; +static char *csb_arg[4]; +static char *arg1 = "console=ttyS3,38400"; +static char *arg2 = "root=/dev/nfs rw ip=any"; +static char *env1 = "ethaddr=00:30:23:50:00:00"; + +const char *get_system_type(void) +{ + return "Cogent CSB250"; +} + +int __init prom_init(int argc, char **argv, char **envp, int *prom_vec) +{ + unsigned char *memsize_str; + unsigned long memsize; + + /* We use a0 and a1 to pass initrd start and size. + */ + if (((uint) argc > 0) && ((uint)argv > 0)) { + my_initrd_start = (uint)argc; + my_initrd_size = (uint)argv; + } + + /* First argv is ignored. + */ + prom_argc = 3; + prom_argv = csb_arg; + prom_envp = csb_env; + csb_arg[1] = arg1; + csb_arg[2] = arg2; + csb_env[0] = env1; + + mips_machgroup = MACH_GROUP_ALCHEMY; + mips_machtype = MACH_CSB250; + + prom_init_cmdline(); + memsize_str = prom_getenv("memsize"); + if (!memsize_str) { + memsize = 0x02000000; + } else { + memsize = simple_strtol(memsize_str, NULL, 0); + } + add_memory_region(0, memsize, BOOT_MEM_RAM); + return 0; +} diff --git a/arch/mips/au1000/csb250/irqmap.c b/arch/mips/au1000/csb250/irqmap.c new file mode 100644 index 0000000..5cb1166 --- /dev/null +++ b/arch/mips/au1000/csb250/irqmap.c @@ -0,0 +1,60 @@ +/* + * BRIEF MODULE DESCRIPTION + * Au1xxx irq map table + * + * Copyright 2003 Embedded Edge, LLC + * dan@embeddededge.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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +au1xxx_irq_map_t au1xxx_irq_map[] = { + + { AU1500_GPIO_204, INTC_INT_HIGH_LEVEL, 0}, + { AU1500_GPIO_201, INTC_INT_LOW_LEVEL, 0 }, + { AU1500_GPIO_202, INTC_INT_LOW_LEVEL, 0 }, + { AU1500_GPIO_203, INTC_INT_LOW_LEVEL, 0 }, + { AU1500_GPIO_205, INTC_INT_LOW_LEVEL, 0 }, + { AU1500_GPIO_207, INTC_INT_LOW_LEVEL, 0 }, +}; + +int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t); -- cgit v1.1