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/*
* Carsten Langgaard, carstenl@mips.com
* Copyright (C) 2000 MIPS Technologies, Inc. All rights reserved.
*
* This program is free software; you can distribute it and/or modify it
* under the terms of the GNU General Public License (Version 2) as
* published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* 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.,
* 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
*/
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/pci.h>
#include <linux/screen_info.h>
#include <asm/cpu.h>
#include <asm/bootinfo.h>
#include <asm/irq.h>
#include <asm/mips-boards/generic.h>
#include <asm/mips-boards/prom.h>
#include <asm/mips-boards/malta.h>
#include <asm/mips-boards/maltaint.h>
#include <asm/dma.h>
#include <asm/time.h>
#include <asm/traps.h>
#ifdef CONFIG_VT
#include <linux/console.h>
#endif
extern void mips_reboot_setup(void);
extern unsigned long mips_rtc_get_time(void);
#ifdef CONFIG_KGDB
extern void kgdb_config(void);
#endif
struct resource standard_io_resources[] = {
{ .name = "dma1", .start = 0x00, .end = 0x1f, .flags = IORESOURCE_BUSY },
{ .name = "timer", .start = 0x40, .end = 0x5f, .flags = IORESOURCE_BUSY },
{ .name = "keyboard", .start = 0x60, .end = 0x6f, .flags = IORESOURCE_BUSY },
{ .name = "dma page reg", .start = 0x80, .end = 0x8f, .flags = IORESOURCE_BUSY },
{ .name = "dma2", .start = 0xc0, .end = 0xdf, .flags = IORESOURCE_BUSY },
};
const char *get_system_type(void)
{
return "MIPS Malta";
}
#if defined(CONFIG_MIPS_MT_SMTC)
const char display_string[] = " SMTC LINUX ON MALTA ";
#else
const char display_string[] = " LINUX ON MALTA ";
#endif /* CONFIG_MIPS_MT_SMTC */
#ifdef CONFIG_BLK_DEV_FD
void __init fd_activate(void)
{
/*
* Activate Floppy Controller in the SMSC FDC37M817 Super I/O
* Controller.
* Done by YAMON 2.00 onwards
*/
/* Entering config state. */
SMSC_WRITE(SMSC_CONFIG_ENTER, SMSC_CONFIG_REG);
/* Activate floppy controller. */
SMSC_WRITE(SMSC_CONFIG_DEVNUM, SMSC_CONFIG_REG);
SMSC_WRITE(SMSC_CONFIG_DEVNUM_FLOPPY, SMSC_DATA_REG);
SMSC_WRITE(SMSC_CONFIG_ACTIVATE, SMSC_CONFIG_REG);
SMSC_WRITE(SMSC_CONFIG_ACTIVATE_ENABLE, SMSC_DATA_REG);
/* Exit config state. */
SMSC_WRITE(SMSC_CONFIG_EXIT, SMSC_CONFIG_REG);
}
#endif
void __init plat_mem_setup(void)
{
unsigned int i;
mips_pcibios_init();
/* Request I/O space for devices used on the Malta board. */
for (i = 0; i < ARRAY_SIZE(standard_io_resources); i++)
request_resource(&ioport_resource, standard_io_resources+i);
/*
* Enable DMA channel 4 (cascade channel) in the PIIX4 south bridge.
*/
enable_dma(4);
#ifdef CONFIG_KGDB
kgdb_config();
#endif
if (mips_revision_sconid == MIPS_REVISION_SCON_BONITO) {
char *argptr;
argptr = prom_getcmdline();
if (strstr(argptr, "debug")) {
BONITO_BONGENCFG |= BONITO_BONGENCFG_DEBUGMODE;
printk("Enabled Bonito debug mode\n");
}
else
BONITO_BONGENCFG &= ~BONITO_BONGENCFG_DEBUGMODE;
#ifdef CONFIG_DMA_COHERENT
if (BONITO_PCICACHECTRL & BONITO_PCICACHECTRL_CPUCOH_PRES) {
BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_CPUCOH_EN;
printk("Enabled Bonito CPU coherency\n");
argptr = prom_getcmdline();
if (strstr(argptr, "iobcuncached")) {
BONITO_PCICACHECTRL &= ~BONITO_PCICACHECTRL_IOBCCOH_EN;
BONITO_PCIMEMBASECFG = BONITO_PCIMEMBASECFG &
~(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
printk("Disabled Bonito IOBC coherency\n");
}
else {
BONITO_PCICACHECTRL |= BONITO_PCICACHECTRL_IOBCCOH_EN;
BONITO_PCIMEMBASECFG |=
(BONITO_PCIMEMBASECFG_MEMBASE0_CACHED |
BONITO_PCIMEMBASECFG_MEMBASE1_CACHED);
printk("Enabled Bonito IOBC coherency\n");
}
}
else
panic("Hardware DMA cache coherency not supported");
#endif
}
#ifdef CONFIG_DMA_COHERENT
else {
panic("Hardware DMA cache coherency not supported");
}
#endif
#ifdef CONFIG_BLK_DEV_IDE
/* Check PCI clock */
{
unsigned int __iomem *jmpr_p = (unsigned int *) ioremap(MALTA_JMPRS_REG, sizeof(unsigned int));
int jmpr = (readw(jmpr_p) >> 2) & 0x07;
static const int pciclocks[] __initdata = {
33, 20, 25, 30, 12, 16, 37, 10
};
int pciclock = pciclocks[jmpr];
char *argptr = prom_getcmdline();
if (pciclock != 33 && !strstr (argptr, "idebus=")) {
printk("WARNING: PCI clock is %dMHz, setting idebus\n", pciclock);
argptr += strlen(argptr);
sprintf(argptr, " idebus=%d", pciclock);
if (pciclock < 20 || pciclock > 66)
printk("WARNING: IDE timing calculations will be incorrect\n");
}
}
#endif
#ifdef CONFIG_BLK_DEV_FD
fd_activate();
#endif
#ifdef CONFIG_VT
#if defined(CONFIG_VGA_CONSOLE)
screen_info = (struct screen_info) {
0, 25, /* orig-x, orig-y */
0, /* unused */
0, /* orig-video-page */
0, /* orig-video-mode */
80, /* orig-video-cols */
0, 0, 0, /* ega_ax, ega_bx, ega_cx */
25, /* orig-video-lines */
VIDEO_TYPE_VGAC, /* orig-video-isVGA */
16 /* orig-video-points */
};
#endif
#endif
mips_reboot_setup();
}
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