1da177e4c3
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!
162 lines
4.6 KiB
C
162 lines
4.6 KiB
C
/*
|
|
* 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];
|
|
|
|
static void __init ev96100_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);
|
|
}
|
|
|
|
early_initcall(ev96100_setup);
|
|
|
|
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;
|
|
}
|