diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/jmr3927/common |
Linux-2.6.12-rc2v2.6.12-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!
Diffstat (limited to 'arch/mips/jmr3927/common')
-rw-r--r-- | arch/mips/jmr3927/common/Makefile | 5 | ||||
-rw-r--r-- | arch/mips/jmr3927/common/prom.c | 81 | ||||
-rw-r--r-- | arch/mips/jmr3927/common/puts.c | 168 | ||||
-rw-r--r-- | arch/mips/jmr3927/common/rtc_ds1742.c | 165 |
4 files changed, 419 insertions, 0 deletions
diff --git a/arch/mips/jmr3927/common/Makefile b/arch/mips/jmr3927/common/Makefile new file mode 100644 index 00000000000..cb09a8eede1 --- /dev/null +++ b/arch/mips/jmr3927/common/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the common code of TOSHIBA JMR-TX3927 board +# + +obj-y += prom.o puts.o rtc_ds1742.o diff --git a/arch/mips/jmr3927/common/prom.c b/arch/mips/jmr3927/common/prom.c new file mode 100644 index 00000000000..5d5838f41d2 --- /dev/null +++ b/arch/mips/jmr3927/common/prom.c @@ -0,0 +1,81 @@ +/* + * BRIEF MODULE DESCRIPTION + * PROM library initialisation code, assuming a version of + * pmon is the boot code. + * + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * + * Based on arch/mips/au1000/common/prom.c + * + * This file was derived from Carsten Langgaard's + * arch/mips/mips-boards/xx files. + * + * 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/kernel.h> +#include <linux/init.h> +#include <linux/string.h> + +#include <asm/bootinfo.h> + +extern int prom_argc; +extern char **prom_argv, **prom_envp; + +typedef struct +{ + char *name; +/* char *val; */ +}t_env_var; + + +char * __init prom_getcmdline(void) +{ + return &(arcs_cmdline[0]); +} + +void __init prom_init_cmdline(void) +{ + char *cp; + int actr; + + actr = 1; /* Always ignore argv[0] */ + + cp = &(arcs_cmdline[0]); + while(actr < prom_argc) { + strcpy(cp, prom_argv[actr]); + cp += strlen(prom_argv[actr]); + *cp++ = ' '; + actr++; + } + if (cp != &(arcs_cmdline[0])) /* get rid of trailing space */ + --cp; + *cp = '\0'; +} + +unsigned long __init prom_free_prom_memory(void) +{ + return 0; +} diff --git a/arch/mips/jmr3927/common/puts.c b/arch/mips/jmr3927/common/puts.c new file mode 100644 index 00000000000..1c1cad9cd07 --- /dev/null +++ b/arch/mips/jmr3927/common/puts.c @@ -0,0 +1,168 @@ +/* + * + * BRIEF MODULE DESCRIPTION + * Low level uart routines to directly access a TX[34]927 SIO. + * + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com or source@mvista.com + * + * Copyright (C) 2000-2001 Toshiba Corporation + * + * Based on arch/mips/au1000/common/puts.c + * + * 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/types.h> +#include <asm/jmr3927/txx927.h> +#include <asm/jmr3927/tx3927.h> +#include <asm/jmr3927/jmr3927.h> + +#define TIMEOUT 0xffffff +#define SLOW_DOWN + +static const char digits[16] = "0123456789abcdef"; + +#ifdef SLOW_DOWN +#define slow_down() { int k; for (k=0; k<10000; k++); } +#else +#define slow_down() +#endif + +void +putch(const unsigned char c) +{ + int i = 0; + + do { + slow_down(); + i++; + if (i>TIMEOUT) { + break; + } + } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS)); + tx3927_sioptr(1)->tfifo = c; + return; +} + +unsigned char getch(void) +{ + int i = 0; + int dicr; + char c; + + /* diable RX int. */ + dicr = tx3927_sioptr(1)->dicr; + tx3927_sioptr(1)->dicr = 0; + + do { + slow_down(); + i++; + if (i>TIMEOUT) { + break; + } + } while (tx3927_sioptr(1)->disr & TXx927_SIDISR_UVALID) + ; + c = tx3927_sioptr(1)->rfifo; + + /* clear RX int. status */ + tx3927_sioptr(1)->disr &= ~TXx927_SIDISR_RDIS; + /* enable RX int. */ + tx3927_sioptr(1)->dicr = dicr; + + return c; +} +void +do_jmr3927_led_set(char n) +{ + /* and with current leds */ + jmr3927_led_and_set(n); +} + +void +puts(unsigned char *cp) +{ + int i = 0; + + while (*cp) { + do { + slow_down(); + i++; + if (i>TIMEOUT) { + break; + } + } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS)); + tx3927_sioptr(1)->tfifo = *cp++; + } + putch('\r'); + putch('\n'); +} + +void +fputs(unsigned char *cp) +{ + int i = 0; + + while (*cp) { + do { + slow_down(); + i++; + if (i>TIMEOUT) { + break; + } + } while (!(tx3927_sioptr(1)->cisr & TXx927_SICISR_TXALS)); + tx3927_sioptr(1)->tfifo = *cp++; + } +} + + +void +put64(uint64_t ul) +{ + int cnt; + unsigned ch; + + cnt = 16; /* 16 nibbles in a 64 bit long */ + putch('0'); + putch('x'); + do { + cnt--; + ch = (unsigned char)(ul >> cnt * 4) & 0x0F; + putch(digits[ch]); + } while (cnt > 0); +} + +void +put32(unsigned u) +{ + int cnt; + unsigned ch; + + cnt = 8; /* 8 nibbles in a 32 bit long */ + putch('0'); + putch('x'); + do { + cnt--; + ch = (unsigned char)(u >> cnt * 4) & 0x0F; + putch(digits[ch]); + } while (cnt > 0); +} diff --git a/arch/mips/jmr3927/common/rtc_ds1742.c b/arch/mips/jmr3927/common/rtc_ds1742.c new file mode 100644 index 00000000000..1ae4318e135 --- /dev/null +++ b/arch/mips/jmr3927/common/rtc_ds1742.c @@ -0,0 +1,165 @@ +/* + * Copyright 2001 MontaVista Software Inc. + * Author: MontaVista Software, Inc. + * ahennessy@mvista.com + * + * arch/mips/jmr3927/common/rtc_ds1742.c + * Based on arch/mips/ddb5xxx/common/rtc_ds1386.c + * low-level RTC hookups for s for Dallas 1742 chip. + * + * 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. + */ + + +/* + * This file exports a function, rtc_ds1386_init(), which expects an + * uncached base address as the argument. It will set the two function + * pointers expected by the MIPS generic timer code. + */ + +#include <linux/bcd.h> +#include <linux/types.h> +#include <linux/time.h> +#include <linux/rtc.h> + +#include <asm/time.h> +#include <asm/addrspace.h> + +#include <asm/jmr3927/ds1742rtc.h> +#include <asm/debug.h> + +#define EPOCH 2000 + +static unsigned long rtc_base; + +static unsigned long +rtc_ds1742_get_time(void) +{ + unsigned int year, month, day, hour, minute, second; + unsigned int century; + + CMOS_WRITE(RTC_READ, RTC_CONTROL); + second = BCD2BIN(CMOS_READ(RTC_SECONDS) & RTC_SECONDS_MASK); + minute = BCD2BIN(CMOS_READ(RTC_MINUTES)); + hour = BCD2BIN(CMOS_READ(RTC_HOURS)); + day = BCD2BIN(CMOS_READ(RTC_DATE)); + month = BCD2BIN(CMOS_READ(RTC_MONTH)); + year = BCD2BIN(CMOS_READ(RTC_YEAR)); + century = BCD2BIN(CMOS_READ(RTC_CENTURY) & RTC_CENTURY_MASK); + CMOS_WRITE(0, RTC_CONTROL); + + year += century * 100; + + return mktime(year, month, day, hour, minute, second); +} +extern void to_tm(unsigned long tim, struct rtc_time * tm); + +static int +rtc_ds1742_set_time(unsigned long t) +{ + struct rtc_time tm; + u8 year, month, day, hour, minute, second; + u8 cmos_year, cmos_month, cmos_day, cmos_hour, cmos_minute, cmos_second; + int cmos_century; + + CMOS_WRITE(RTC_READ, RTC_CONTROL); + cmos_second = (u8)(CMOS_READ(RTC_SECONDS) & RTC_SECONDS_MASK); + cmos_minute = (u8)CMOS_READ(RTC_MINUTES); + cmos_hour = (u8)CMOS_READ(RTC_HOURS); + cmos_day = (u8)CMOS_READ(RTC_DATE); + cmos_month = (u8)CMOS_READ(RTC_MONTH); + cmos_year = (u8)CMOS_READ(RTC_YEAR); + cmos_century = CMOS_READ(RTC_CENTURY) & RTC_CENTURY_MASK; + + CMOS_WRITE(RTC_WRITE, RTC_CONTROL); + + /* convert */ + to_tm(t, &tm); + + /* check each field one by one */ + year = BIN2BCD(tm.tm_year - EPOCH); + if (year != cmos_year) { + CMOS_WRITE(year,RTC_YEAR); + } + + month = BIN2BCD(tm.tm_mon); + if (month != (cmos_month & 0x1f)) { + CMOS_WRITE((month & 0x1f) | (cmos_month & ~0x1f),RTC_MONTH); + } + + day = BIN2BCD(tm.tm_mday); + if (day != cmos_day) { + + CMOS_WRITE(day, RTC_DATE); + } + + if (cmos_hour & 0x40) { + /* 12 hour format */ + hour = 0x40; + if (tm.tm_hour > 12) { + hour |= 0x20 | (BIN2BCD(hour-12) & 0x1f); + } else { + hour |= BIN2BCD(tm.tm_hour); + } + } else { + /* 24 hour format */ + hour = BIN2BCD(tm.tm_hour) & 0x3f; + } + if (hour != cmos_hour) CMOS_WRITE(hour, RTC_HOURS); + + minute = BIN2BCD(tm.tm_min); + if (minute != cmos_minute) { + CMOS_WRITE(minute, RTC_MINUTES); + } + + second = BIN2BCD(tm.tm_sec); + if (second != cmos_second) { + CMOS_WRITE(second & RTC_SECONDS_MASK,RTC_SECONDS); + } + + /* RTC_CENTURY and RTC_CONTROL share same address... */ + CMOS_WRITE(cmos_century, RTC_CONTROL); + + return 0; +} + +void +rtc_ds1742_init(unsigned long base) +{ + u8 cmos_second; + + /* remember the base */ + rtc_base = base; + db_assert((rtc_base & 0xe0000000) == KSEG1); + + /* set the function pointers */ + rtc_get_time = rtc_ds1742_get_time; + rtc_set_time = rtc_ds1742_set_time; + + /* clear oscillator stop bit */ + CMOS_WRITE(RTC_READ, RTC_CONTROL); + cmos_second = (u8)(CMOS_READ(RTC_SECONDS) & RTC_SECONDS_MASK); + CMOS_WRITE(RTC_WRITE, RTC_CONTROL); + CMOS_WRITE(cmos_second, RTC_SECONDS); /* clear msb */ + CMOS_WRITE(0, RTC_CONTROL); +} |