189 lines
7.0 KiB
C
189 lines
7.0 KiB
C
/*
|
|
*
|
|
* BRIEF MODULE DESCRIPTION
|
|
* Au1xx0 reset routines.
|
|
*
|
|
* Copyright 2001, 2006, 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/gpio.h>
|
|
|
|
#include <asm/cacheflush.h>
|
|
#include <asm/mach-au1x00/au1000.h>
|
|
|
|
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;
|
|
}
|
|
|
|
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(KERN_NOTICE "\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
|
|
gpio_direction_output(210, 1);
|
|
#endif
|
|
#ifdef CONFIG_MIPS_DB1200
|
|
au_writew(au_readw(0xB980001C) | (1 << 14), 0xB980001C);
|
|
#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();
|
|
}
|