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/*
* BRIEF MODULE DESCRIPTION
* Galileo EV96100 setup.
*
* Copyright 2000 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ppopov@mvista.com or source@mvista.com
*
* This file was derived from Carsten Langgaard's
* arch/mips/mips-boards/atlas/atlas_setup.c.
*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 1999,2000 MIPS Technologies, Inc. All rights reserved.
*
* 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/string.h>
#include <linux/ctype.h>
#include <linux/pci.h>
#include <asm/cpu.h>
#include <asm/bootinfo.h>
#include <asm/mipsregs.h>
#include <asm/irq.h>
#include <asm/delay.h>
#include <asm/gt64120.h>
#include <asm/galileo-boards/ev96100int.h>
extern char *__init prom_getcmdline(void);
extern void mips_reboot_setup(void);
unsigned char mac_0_1[12];
void __init plat_setup(void)
{
unsigned int config = read_c0_config();
unsigned int status = read_c0_status();
unsigned int info = read_c0_info();
u32 tmp;
char *argptr;
clear_c0_status(ST0_FR);
if (config & 0x8)
printk("Secondary cache is enabled\n");
else
printk("Secondary cache is disabled\n");
if (status & (1 << 27))
printk("User-mode cache ops enabled\n");
else
printk("User-mode cache ops disabled\n");
printk("CP0 info reg: %x\n", (unsigned) info);
if (info & (1 << 28))
printk("burst mode Scache RAMS\n");
else
printk("pipelined Scache RAMS\n");
if (info & 0x1)
printk("Atomic Enable is set\n");
argptr = prom_getcmdline();
#ifdef CONFIG_SERIAL_CONSOLE
if (strstr(argptr, "console=") == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " console=ttyS0,115200");
}
#endif
mips_reboot_setup();
set_io_port_base(KSEG1);
ioport_resource.start = GT_PCI_IO_BASE;
ioport_resource.end = GT_PCI_IO_BASE + 0x01ffffff;
#ifdef CONFIG_BLK_DEV_INITRD
ROOT_DEV = MKDEV(RAMDISK_MAJOR, 0);
#endif
/*
* Setup GT controller master bit so we can do config cycles
*/
/* Clear cause register bits */
GT_WRITE(GT_INTRCAUSE_OFS, ~(GT_INTRCAUSE_MASABORT0_BIT |
GT_INTRCAUSE_TARABORT0_BIT));
/* Setup address */
GT_WRITE(GT_PCI0_CFGADDR_OFS,
(0 << GT_PCI0_CFGADDR_BUSNUM_SHF) |
(0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) |
((PCI_COMMAND / 4) << GT_PCI0_CFGADDR_REGNUM_SHF) |
GT_PCI0_CFGADDR_CONFIGEN_BIT);
udelay(2);
tmp = GT_READ(GT_PCI0_CFGDATA_OFS);
tmp |= (PCI_COMMAND_IO | PCI_COMMAND_MEMORY |
PCI_COMMAND_MASTER | PCI_COMMAND_SERR);
GT_WRITE(GT_PCI0_CFGADDR_OFS,
(0 << GT_PCI0_CFGADDR_BUSNUM_SHF) |
(0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) |
((PCI_COMMAND / 4) << GT_PCI0_CFGADDR_REGNUM_SHF) |
GT_PCI0_CFGADDR_CONFIGEN_BIT);
udelay(2);
GT_WRITE(GT_PCI0_CFGDATA_OFS, tmp);
/* Setup address */
GT_WRITE(GT_PCI0_CFGADDR_OFS,
(0 << GT_PCI0_CFGADDR_BUSNUM_SHF) |
(0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) |
((PCI_COMMAND / 4) << GT_PCI0_CFGADDR_REGNUM_SHF) |
GT_PCI0_CFGADDR_CONFIGEN_BIT);
udelay(2);
tmp = GT_READ(GT_PCI0_CFGDATA_OFS);
}
unsigned short get_gt_devid(void)
{
u32 gt_devid;
/* Figure out if this is a gt96100 or gt96100A */
GT_WRITE(GT_PCI0_CFGADDR_OFS,
(0 << GT_PCI0_CFGADDR_BUSNUM_SHF) |
(0 << GT_PCI0_CFGADDR_FUNCTNUM_SHF) |
((PCI_VENDOR_ID / 4) << GT_PCI0_CFGADDR_REGNUM_SHF) |
GT_PCI0_CFGADDR_CONFIGEN_BIT);
udelay(4);
gt_devid = GT_READ(GT_PCI0_CFGDATA_OFS);
return gt_devid >> 16;
}
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