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linux-IllusionX/arch/mips/jmr3927/rbhma3100/setup.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
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!
2005-04-16 15:20:36 -07:00

510 lines
14 KiB
C
Raw Blame History

/***********************************************************************
*
* Copyright 2001 MontaVista Software Inc.
* Author: MontaVista Software, Inc.
* ahennessy@mvista.com
*
* Based on arch/mips/ddb5xxx/ddb5477/setup.c
*
* Setup file for JMR3927.
*
* Copyright (C) 2000-2001 Toshiba Corporation
*
* 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/kernel.h>
#include <linux/kdev_t.h>
#include <linux/types.h>
#include <linux/sched.h>
#include <linux/pci.h>
#include <linux/ide.h>
#include <linux/ioport.h>
#include <linux/param.h> /* for HZ */
#include <linux/delay.h>
#include <asm/addrspace.h>
#include <asm/time.h>
#include <asm/bcache.h>
#include <asm/irq.h>
#include <asm/reboot.h>
#include <asm/gdb-stub.h>
#include <asm/jmr3927/jmr3927.h>
#include <asm/mipsregs.h>
#include <asm/traps.h>
/* Tick Timer divider */
#define JMR3927_TIMER_CCD 0 /* 1/2 */
#define JMR3927_TIMER_CLK (JMR3927_IMCLK / (2 << JMR3927_TIMER_CCD))
unsigned char led_state = 0xf;
struct {
struct resource ram0;
struct resource ram1;
struct resource pcimem;
struct resource iob;
struct resource ioc;
struct resource pciio;
struct resource jmy1394;
struct resource rom1;
struct resource rom0;
struct resource sio0;
struct resource sio1;
} jmr3927_resources = {
{ "RAM0", 0, 0x01FFFFFF, IORESOURCE_MEM },
{ "RAM1", 0x02000000, 0x03FFFFFF, IORESOURCE_MEM },
{ "PCIMEM", 0x08000000, 0x07FFFFFF, IORESOURCE_MEM },
{ "IOB", 0x10000000, 0x13FFFFFF },
{ "IOC", 0x14000000, 0x14FFFFFF },
{ "PCIIO", 0x15000000, 0x15FFFFFF },
{ "JMY1394", 0x1D000000, 0x1D3FFFFF },
{ "ROM1", 0x1E000000, 0x1E3FFFFF },
{ "ROM0", 0x1FC00000, 0x1FFFFFFF },
{ "SIO0", 0xFFFEF300, 0xFFFEF3FF },
{ "SIO1", 0xFFFEF400, 0xFFFEF4FF },
};
/* don't enable - see errata */
int jmr3927_ccfg_toeon = 0;
static inline void do_reset(void)
{
#ifdef CONFIG_TC35815
extern void tc35815_killall(void);
tc35815_killall();
#endif
#if 1 /* Resetting PCI bus */
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI, JMR3927_IOC_RESET_ADDR);
(void)jmr3927_ioc_reg_in(JMR3927_IOC_RESET_ADDR); /* flush WB */
mdelay(1);
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
#endif
jmr3927_ioc_reg_out(JMR3927_IOC_RESET_CPU, JMR3927_IOC_RESET_ADDR);
}
static void jmr3927_machine_restart(char *command)
{
local_irq_disable();
puts("Rebooting...");
do_reset();
}
static void jmr3927_machine_halt(void)
{
puts("JMR-TX3927 halted.\n");
while (1);
}
static void jmr3927_machine_power_off(void)
{
puts("JMR-TX3927 halted. Please turn off the power.\n");
while (1);
}
#define USE_RTC_DS1742
#ifdef USE_RTC_DS1742
extern void rtc_ds1742_init(unsigned long base);
#endif
static void __init jmr3927_time_init(void)
{
#ifdef USE_RTC_DS1742
if (jmr3927_have_nvram()) {
rtc_ds1742_init(JMR3927_IOC_NVRAMB_ADDR);
}
#endif
}
unsigned long jmr3927_do_gettimeoffset(void);
extern int setup_irq(unsigned int irq, struct irqaction *irqaction);
static void __init jmr3927_timer_setup(struct irqaction *irq)
{
do_gettimeoffset = jmr3927_do_gettimeoffset;
jmr3927_tmrptr->cpra = JMR3927_TIMER_CLK / HZ;
jmr3927_tmrptr->itmr = TXx927_TMTITMR_TIIE | TXx927_TMTITMR_TZCE;
jmr3927_tmrptr->ccdr = JMR3927_TIMER_CCD;
jmr3927_tmrptr->tcr =
TXx927_TMTCR_TCE | TXx927_TMTCR_CCDE | TXx927_TMTCR_TMODE_ITVL;
setup_irq(JMR3927_IRQ_TICK, irq);
}
#define USECS_PER_JIFFY (1000000/HZ)
unsigned long jmr3927_do_gettimeoffset(void)
{
unsigned long count;
unsigned long res = 0;
/* MUST read TRR before TISR. */
count = jmr3927_tmrptr->trr;
if (jmr3927_tmrptr->tisr & TXx927_TMTISR_TIIS) {
/* timer interrupt is pending. use Max value. */
res = USECS_PER_JIFFY - 1;
} else {
/* convert to usec */
/* res = count / (JMR3927_TIMER_CLK / 1000000); */
res = (count << 7) / ((JMR3927_TIMER_CLK << 7) / 1000000);
/*
* Due to possible jiffies inconsistencies, we need to check
* the result so that we'll get a timer that is monotonic.
*/
if (res >= USECS_PER_JIFFY)
res = USECS_PER_JIFFY-1;
}
return res;
}
//#undef DO_WRITE_THROUGH
#define DO_WRITE_THROUGH
#define DO_ENABLE_CACHE
extern char * __init prom_getcmdline(void);
static void jmr3927_board_init(void);
extern struct resource pci_io_resource;
extern struct resource pci_mem_resource;
static void __init jmr3927_setup(void)
{
char *argptr;
set_io_port_base(JMR3927_PORT_BASE + JMR3927_PCIIO);
board_time_init = jmr3927_time_init;
board_timer_setup = jmr3927_timer_setup;
_machine_restart = jmr3927_machine_restart;
_machine_halt = jmr3927_machine_halt;
_machine_power_off = jmr3927_machine_power_off;
/*
* IO/MEM resources.
*/
ioport_resource.start = pci_io_resource.start;
ioport_resource.end = pci_io_resource.end;
iomem_resource.start = pci_mem_resource.start;
iomem_resource.end = pci_mem_resource.end;
/* Reboot on panic */
panic_timeout = 180;
{
unsigned int conf;
conf = read_c0_conf();
}
#if 1
/* cache setup */
{
unsigned int conf;
#ifdef DO_ENABLE_CACHE
int mips_ic_disable = 0, mips_dc_disable = 0;
#else
int mips_ic_disable = 1, mips_dc_disable = 1;
#endif
#ifdef DO_WRITE_THROUGH
int mips_config_cwfon = 0;
int mips_config_wbon = 0;
#else
int mips_config_cwfon = 1;
int mips_config_wbon = 1;
#endif
conf = read_c0_conf();
conf &= ~(TX39_CONF_ICE | TX39_CONF_DCE | TX39_CONF_WBON | TX39_CONF_CWFON);
conf |= mips_ic_disable ? 0 : TX39_CONF_ICE;
conf |= mips_dc_disable ? 0 : TX39_CONF_DCE;
conf |= mips_config_wbon ? TX39_CONF_WBON : 0;
conf |= mips_config_cwfon ? TX39_CONF_CWFON : 0;
write_c0_conf(conf);
write_c0_cache(0);
}
#endif
/* initialize board */
jmr3927_board_init();
argptr = prom_getcmdline();
if ((argptr = strstr(argptr, "toeon")) != NULL) {
jmr3927_ccfg_toeon = 1;
}
argptr = prom_getcmdline();
if ((argptr = strstr(argptr, "ip=")) == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " ip=bootp");
}
#ifdef CONFIG_TXX927_SERIAL_CONSOLE
argptr = prom_getcmdline();
if ((argptr = strstr(argptr, "console=")) == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " console=ttyS1,115200");
}
#endif
}
early_initcall(jmr3927_setup);
static void tx3927_setup(void);
#ifdef CONFIG_PCI
unsigned long mips_pci_io_base;
unsigned long mips_pci_io_size;
unsigned long mips_pci_mem_base;
unsigned long mips_pci_mem_size;
/* for legacy I/O, PCI I/O PCI Bus address must be 0 */
unsigned long mips_pci_io_pciaddr = 0;
#endif
static void __init jmr3927_board_init(void)
{
char *argptr;
#ifdef CONFIG_PCI
mips_pci_io_base = JMR3927_PCIIO;
mips_pci_io_size = JMR3927_PCIIO_SIZE;
mips_pci_mem_base = JMR3927_PCIMEM;
mips_pci_mem_size = JMR3927_PCIMEM_SIZE;
#endif
tx3927_setup();
if (jmr3927_have_isac()) {
#ifdef CONFIG_FB_E1355
argptr = prom_getcmdline();
if ((argptr = strstr(argptr, "video=")) == NULL) {
argptr = prom_getcmdline();
strcat(argptr, " video=e1355fb:crt16h");
}
#endif
#ifdef CONFIG_BLK_DEV_IDE
/* overrides PCI-IDE */
#endif
}
/* SIO0 DTR on */
jmr3927_ioc_reg_out(0, JMR3927_IOC_DTR_ADDR);
jmr3927_led_set(0);
if (jmr3927_have_isac())
jmr3927_io_led_set(0);
printk("JMR-TX3927 (Rev %d) --- IOC(Rev %d) DIPSW:%d,%d,%d,%d\n",
jmr3927_ioc_reg_in(JMR3927_IOC_BREV_ADDR) & JMR3927_REV_MASK,
jmr3927_ioc_reg_in(JMR3927_IOC_REV_ADDR) & JMR3927_REV_MASK,
jmr3927_dipsw1(), jmr3927_dipsw2(),
jmr3927_dipsw3(), jmr3927_dipsw4());
if (jmr3927_have_isac())
printk("JMI-3927IO2 --- ISAC(Rev %d) DIPSW:%01x\n",
jmr3927_isac_reg_in(JMR3927_ISAC_REV_ADDR) & JMR3927_REV_MASK,
jmr3927_io_dipsw());
}
static void __init tx3927_setup(void)
{
int i;
/* SDRAMC are configured by PROM */
/* ROMC */
tx3927_romcptr->cr[1] = JMR3927_ROMCE1 | 0x00030048;
tx3927_romcptr->cr[2] = JMR3927_ROMCE2 | 0x000064c8;
tx3927_romcptr->cr[3] = JMR3927_ROMCE3 | 0x0003f698;
tx3927_romcptr->cr[5] = JMR3927_ROMCE5 | 0x0000f218;
/* CCFG */
/* enable Timeout BusError */
if (jmr3927_ccfg_toeon)
tx3927_ccfgptr->ccfg |= TX3927_CCFG_TOE;
/* clear BusErrorOnWrite flag */
tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_BEOW;
/* Disable PCI snoop */
tx3927_ccfgptr->ccfg &= ~TX3927_CCFG_PSNP;
#ifdef DO_WRITE_THROUGH
/* Enable PCI SNOOP - with write through only */
tx3927_ccfgptr->ccfg |= TX3927_CCFG_PSNP;
#endif
/* Pin selection */
tx3927_ccfgptr->pcfg &= ~TX3927_PCFG_SELALL;
tx3927_ccfgptr->pcfg |=
TX3927_PCFG_SELSIOC(0) | TX3927_PCFG_SELSIO_ALL |
(TX3927_PCFG_SELDMA_ALL & ~TX3927_PCFG_SELDMA(1));
printk("TX3927 -- CRIR:%08lx CCFG:%08lx PCFG:%08lx\n",
tx3927_ccfgptr->crir,
tx3927_ccfgptr->ccfg, tx3927_ccfgptr->pcfg);
/* IRC */
/* disable interrupt control */
tx3927_ircptr->cer = 0;
/* mask all IRC interrupts */
tx3927_ircptr->imr = 0;
for (i = 0; i < TX3927_NUM_IR / 2; i++) {
tx3927_ircptr->ilr[i] = 0;
}
/* setup IRC interrupt mode (Low Active) */
for (i = 0; i < TX3927_NUM_IR / 8; i++) {
tx3927_ircptr->cr[i] = 0;
}
/* TMR */
/* disable all timers */
for (i = 0; i < TX3927_NR_TMR; i++) {
tx3927_tmrptr(i)->tcr = TXx927_TMTCR_CRE;
tx3927_tmrptr(i)->tisr = 0;
tx3927_tmrptr(i)->cpra = 0xffffffff;
tx3927_tmrptr(i)->itmr = 0;
tx3927_tmrptr(i)->ccdr = 0;
tx3927_tmrptr(i)->pgmr = 0;
}
/* DMA */
tx3927_dmaptr->mcr = 0;
for (i = 0; i < sizeof(tx3927_dmaptr->ch) / sizeof(tx3927_dmaptr->ch[0]); i++) {
/* reset channel */
tx3927_dmaptr->ch[i].ccr = TX3927_DMA_CCR_CHRST;
tx3927_dmaptr->ch[i].ccr = 0;
}
/* enable DMA */
#ifdef __BIG_ENDIAN
tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN;
#else
tx3927_dmaptr->mcr = TX3927_DMA_MCR_MSTEN | TX3927_DMA_MCR_LE;
#endif
#ifdef CONFIG_PCI
/* PCIC */
printk("TX3927 PCIC -- DID:%04x VID:%04x RID:%02x Arbiter:",
tx3927_pcicptr->did, tx3927_pcicptr->vid,
tx3927_pcicptr->rid);
if (!(tx3927_ccfgptr->ccfg & TX3927_CCFG_PCIXARB)) {
printk("External\n");
/* XXX */
} else {
printk("Internal\n");
/* Reset PCI Bus */
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
udelay(100);
jmr3927_ioc_reg_out(JMR3927_IOC_RESET_PCI,
JMR3927_IOC_RESET_ADDR);
udelay(100);
jmr3927_ioc_reg_out(0, JMR3927_IOC_RESET_ADDR);
/* Disable External PCI Config. Access */
tx3927_pcicptr->lbc = TX3927_PCIC_LBC_EPCAD;
#ifdef __BIG_ENDIAN
tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_IBSE |
TX3927_PCIC_LBC_TIBSE |
TX3927_PCIC_LBC_TMFBSE | TX3927_PCIC_LBC_MSDSE;
#endif
/* LB->PCI mappings */
tx3927_pcicptr->iomas = ~(mips_pci_io_size - 1);
tx3927_pcicptr->ilbioma = mips_pci_io_base;
tx3927_pcicptr->ipbioma = mips_pci_io_pciaddr;
tx3927_pcicptr->mmas = ~(mips_pci_mem_size - 1);
tx3927_pcicptr->ilbmma = mips_pci_mem_base;
tx3927_pcicptr->ipbmma = mips_pci_mem_base;
/* PCI->LB mappings */
tx3927_pcicptr->iobas = 0xffffffff;
tx3927_pcicptr->ioba = 0;
tx3927_pcicptr->tlbioma = 0;
tx3927_pcicptr->mbas = ~(mips_pci_mem_size - 1);
tx3927_pcicptr->mba = 0;
tx3927_pcicptr->tlbmma = 0;
#ifndef JMR3927_INIT_INDIRECT_PCI
/* Enable Direct mapping Address Space Decoder */
tx3927_pcicptr->lbc |= TX3927_PCIC_LBC_ILMDE | TX3927_PCIC_LBC_ILIDE;
#endif
/* Clear All Local Bus Status */
tx3927_pcicptr->lbstat = TX3927_PCIC_LBIM_ALL;
/* Enable All Local Bus Interrupts */
tx3927_pcicptr->lbim = TX3927_PCIC_LBIM_ALL;
/* Clear All PCI Status Error */
tx3927_pcicptr->pcistat = TX3927_PCIC_PCISTATIM_ALL;
/* Enable All PCI Status Error Interrupts */
tx3927_pcicptr->pcistatim = TX3927_PCIC_PCISTATIM_ALL;
/* PCIC Int => IRC IRQ10 */
tx3927_pcicptr->il = TX3927_IR_PCI;
#if 1
/* Target Control (per errata) */
tx3927_pcicptr->tc = TX3927_PCIC_TC_OF8E | TX3927_PCIC_TC_IF8E;
#endif
/* Enable Bus Arbiter */
#if 0
tx3927_pcicptr->req_trace = 0x73737373;
#endif
tx3927_pcicptr->pbapmc = TX3927_PCIC_PBAPMC_PBAEN;
tx3927_pcicptr->pcicmd = PCI_COMMAND_MASTER |
PCI_COMMAND_MEMORY |
#if 1
PCI_COMMAND_IO |
#endif
PCI_COMMAND_PARITY | PCI_COMMAND_SERR;
}
#endif /* CONFIG_PCI */
/* PIO */
/* PIO[15:12] connected to LEDs */
tx3927_pioptr->dir = 0x0000f000;
tx3927_pioptr->maskcpu = 0;
tx3927_pioptr->maskext = 0;
{
unsigned int conf;
conf = read_c0_conf();
if (!(conf & TX39_CONF_ICE))
printk("TX3927 I-Cache disabled.\n");
if (!(conf & TX39_CONF_DCE))
printk("TX3927 D-Cache disabled.\n");
else if (!(conf & TX39_CONF_WBON))
printk("TX3927 D-Cache WriteThrough.\n");
else if (!(conf & TX39_CONF_CWFON))
printk("TX3927 D-Cache WriteBack.\n");
else
printk("TX3927 D-Cache WriteBack (CWF) .\n");
}
}
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