/* * * BRIEF MODULE DESCRIPTION * Au1000 reset routines. * * Copyright 2001 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 #include #include #include #include #include #include #include #include extern int au_sleep(void); extern void (*flush_cache_all)(void); void au1000_restart(char *command) { /* Set all integrated peripherals to disabled states */ extern void board_reset (void); u32 prid = read_c0_prid(); printk(KERN_NOTICE "\n** Resetting Integrated Peripherals\n"); switch (prid & 0xFF000000) { case 0x00000000: /* Au1000 */ au_writel(0x02, 0xb0000010); /* ac97_enable */ au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */ asm("sync"); au_writel(0x00, 0xb017fffc); /* usbh_enable */ au_writel(0x00, 0xb0200058); /* usbd_enable */ au_writel(0x00, 0xb0300040); /* ir_enable */ au_writel(0x00, 0xb4004104); /* mac dma */ au_writel(0x00, 0xb4004114); /* mac dma */ au_writel(0x00, 0xb4004124); /* mac dma */ au_writel(0x00, 0xb4004134); /* mac dma */ au_writel(0x00, 0xb0520000); /* macen0 */ au_writel(0x00, 0xb0520004); /* macen1 */ au_writel(0x00, 0xb1000008); /* i2s_enable */ au_writel(0x00, 0xb1100100); /* uart0_enable */ au_writel(0x00, 0xb1200100); /* uart1_enable */ au_writel(0x00, 0xb1300100); /* uart2_enable */ au_writel(0x00, 0xb1400100); /* uart3_enable */ au_writel(0x02, 0xb1600100); /* ssi0_enable */ au_writel(0x02, 0xb1680100); /* ssi1_enable */ au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */ au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */ au_writel(0x00, 0xb1900028); /* sys_clksrc */ au_writel(0x10, 0xb1900060); /* sys_cpupll */ au_writel(0x00, 0xb1900064); /* sys_auxpll */ au_writel(0x00, 0xb1900100); /* sys_pininputen */ break; case 0x01000000: /* Au1500 */ au_writel(0x02, 0xb0000010); /* ac97_enable */ au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */ asm("sync"); au_writel(0x00, 0xb017fffc); /* usbh_enable */ au_writel(0x00, 0xb0200058); /* usbd_enable */ au_writel(0x00, 0xb4004104); /* mac dma */ au_writel(0x00, 0xb4004114); /* mac dma */ au_writel(0x00, 0xb4004124); /* mac dma */ au_writel(0x00, 0xb4004134); /* mac dma */ au_writel(0x00, 0xb1520000); /* macen0 */ au_writel(0x00, 0xb1520004); /* macen1 */ au_writel(0x00, 0xb1100100); /* uart0_enable */ au_writel(0x00, 0xb1400100); /* uart3_enable */ au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */ au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */ au_writel(0x00, 0xb1900028); /* sys_clksrc */ au_writel(0x10, 0xb1900060); /* sys_cpupll */ au_writel(0x00, 0xb1900064); /* sys_auxpll */ au_writel(0x00, 0xb1900100); /* sys_pininputen */ break; case 0x02000000: /* Au1100 */ au_writel(0x02, 0xb0000010); /* ac97_enable */ au_writel(0x08, 0xb017fffc); /* usbh_enable - early errata */ asm("sync"); au_writel(0x00, 0xb017fffc); /* usbh_enable */ au_writel(0x00, 0xb0200058); /* usbd_enable */ au_writel(0x00, 0xb0300040); /* ir_enable */ au_writel(0x00, 0xb4004104); /* mac dma */ au_writel(0x00, 0xb4004114); /* mac dma */ au_writel(0x00, 0xb4004124); /* mac dma */ au_writel(0x00, 0xb4004134); /* mac dma */ au_writel(0x00, 0xb0520000); /* macen0 */ au_writel(0x00, 0xb1000008); /* i2s_enable */ au_writel(0x00, 0xb1100100); /* uart0_enable */ au_writel(0x00, 0xb1200100); /* uart1_enable */ au_writel(0x00, 0xb1400100); /* uart3_enable */ au_writel(0x02, 0xb1600100); /* ssi0_enable */ au_writel(0x02, 0xb1680100); /* ssi1_enable */ au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */ au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */ au_writel(0x00, 0xb1900028); /* sys_clksrc */ au_writel(0x10, 0xb1900060); /* sys_cpupll */ au_writel(0x00, 0xb1900064); /* sys_auxpll */ au_writel(0x00, 0xb1900100); /* sys_pininputen */ break; case 0x03000000: /* Au1550 */ au_writel(0x00, 0xb1a00004); /* psc 0 */ au_writel(0x00, 0xb1b00004); /* psc 1 */ au_writel(0x00, 0xb0a00004); /* psc 2 */ au_writel(0x00, 0xb0b00004); /* psc 3 */ au_writel(0x00, 0xb017fffc); /* usbh_enable */ au_writel(0x00, 0xb0200058); /* usbd_enable */ au_writel(0x00, 0xb4004104); /* mac dma */ au_writel(0x00, 0xb4004114); /* mac dma */ au_writel(0x00, 0xb4004124); /* mac dma */ au_writel(0x00, 0xb4004134); /* mac dma */ au_writel(0x00, 0xb1520000); /* macen0 */ au_writel(0x00, 0xb1520004); /* macen1 */ au_writel(0x00, 0xb1100100); /* uart0_enable */ au_writel(0x00, 0xb1200100); /* uart1_enable */ au_writel(0x00, 0xb1400100); /* uart3_enable */ au_writel(0x00, 0xb1900020); /* sys_freqctrl0 */ au_writel(0x00, 0xb1900024); /* sys_freqctrl1 */ au_writel(0x00, 0xb1900028); /* sys_clksrc */ au_writel(0x10, 0xb1900060); /* sys_cpupll */ au_writel(0x00, 0xb1900064); /* sys_auxpll */ au_writel(0x00, 0xb1900100); /* sys_pininputen */ break; default: break; } set_c0_status(ST0_BEV | ST0_ERL); change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED); flush_cache_all(); write_c0_wired(0); /* Give board a chance to do a hardware reset */ board_reset(); /* Jump to the beggining in case board_reset() is empty */ __asm__ __volatile__("jr\t%0"::"r"(0xbfc00000)); } void au1000_halt(void) { #if defined(CONFIG_MIPS_PB1550) || defined(CONFIG_MIPS_DB1550) /* power off system */ printk("\n** Powering off...\n"); au_writew(au_readw(0xAF00001C) | (3<<14), 0xAF00001C); au_sync(); while(1); /* should not get here */ #else printk(KERN_NOTICE "\n** You can safely turn off the power\n"); #ifdef CONFIG_MIPS_MIRAGE au_writel((1 << 26) | (1 << 10), GPIO2_OUTPUT); #endif #ifdef CONFIG_PM au_sleep(); /* should not get here */ printk(KERN_ERR "Unable to put cpu in sleep mode\n"); while(1); #else while (1) __asm__(".set\tmips3\n\t" "wait\n\t" ".set\tmips0"); #endif #endif /* defined(CONFIG_MIPS_PB1550) || defined(CONFIG_MIPS_DB1550) */ } void au1000_power_off(void) { au1000_halt(); }