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Diffstat (limited to 'arch/mips/jmr3927/rbhma3100/setup.c')
-rw-r--r--arch/mips/jmr3927/rbhma3100/setup.c510
1 files changed, 510 insertions, 0 deletions
diff --git a/arch/mips/jmr3927/rbhma3100/setup.c b/arch/mips/jmr3927/rbhma3100/setup.c
new file mode 100644
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--- /dev/null
+++ b/arch/mips/jmr3927/rbhma3100/setup.c
@@ -0,0 +1,510 @@
+/***********************************************************************
+ *
+ * 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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