Hello Kiran,
On Fri, 23 Jun 2006 18:56:54 -0700
Kiran Thota <Kiran_Thota@xxxxxxxxxxxxxx> wrote:
>
>
> - Add IRQ controller (hacked from irq-rm9000.c)
If you change the IRQ numbers, I think that irq-rm9000.c and irq-rm7000.c can be used.
> - Add Interrupt handlers
You should rewrite the assembler interrupt handler to C code.
> diff -Naur a/arch/mips/pmc-sierra/sequoia/setup.c b/arch/mips/pmc-sierra/sequoia/setup.c
> --- a/arch/mips/pmc-sierra/sequoia/setup.c 1969-12-31 16:00:00.000000000 -0800
> +++ b/arch/mips/pmc-sierra/sequoia/setup.c 2006-06-22 14:57:38.000000000 -0700
> @@ -0,0 +1,258 @@
> +/*
> + * arch/mip/pmc-sierra/sequoia/setup.c
> + *
> + * Copyright (C) 2006 PMC-Sierra Inc.
> + * Author: PMC Sierra Inc (thotakir@xxxxxxxxxxxxxx)
> + *
> + */
> +
> +#include <linux/init.h>
> +#include <linux/kernel.h>
> +#include <linux/types.h>
> +#include <linux/mc146818rtc.h>
> +#include <linux/mm.h>
> +#include <linux/swap.h>
> +#include <linux/ioport.h>
> +#include <linux/console.h>
> +#include <linux/sched.h>
> +#include <linux/interrupt.h>
> +#include <linux/pci.h>
> +#include <linux/timex.h>
> +#include <linux/vmalloc.h>
> +#include <asm/time.h>
> +#include <asm/bootinfo.h>
> +#include <asm/page.h>
> +#include <asm/bootinfo.h>
> +#include <asm/io.h>
> +#include <asm/irq.h>
> +#include <asm/processor.h>
> +#include <asm/ptrace.h>
> +#include <asm/reboot.h>
> +#include <asm/traps.h>
> +#include <linux/version.h>
> +#include <linux/bootmem.h>
> +
> +#include <asm/serial.h>
> +#include <linux/termios.h>
> +#include <linux/tty.h>
> +#include <linux/serial.h>
> +#include <linux/serial_core.h>
> +
> +#include <linux/mm.h>
> +
> +#include <asm/pmc_sequoia.h>
> +
> +#include "setup.h"
> +
> +unsigned long titan_ge_base;
> +unsigned long cpu_clock;
> +unsigned long sequoia_memsize;
> +
> +/* Real Time Clock base */
> +#define CONV_BCD_TO_BIN(val) (((val) & 0xf) + (((val) >> 4) * 10))
> +#define CONV_BIN_TO_BCD(val) (((val) % 10) + (((val) / 10) << 4))
You should use #include <linux/bcd.h>.
> +void __init bus_error_init(void)
> +{
> + /* Do nothing */
> +}
It doesn't need.
> +unsigned long m48t37y_get_time(void)
> +{
> + unsigned char *rtc_base = SEQUOIA_RTC_BASE_ADDR;
> + unsigned int year, month, day, hour, min, sec;
> +
> + /* Stop the update to the time */
> + rtc_base[0x7ff8] = 0x40;
> +
> + year = CONV_BCD_TO_BIN(rtc_base[0x7fff]);
> + year += CONV_BCD_TO_BIN(rtc_base[0x7ff1]) * 100;
> +
> + month = CONV_BCD_TO_BIN(rtc_base[0x7ffe]);
> + day = CONV_BCD_TO_BIN(rtc_base[0x7ffd]);
> + hour = CONV_BCD_TO_BIN(rtc_base[0x7ffb]);
> + min = CONV_BCD_TO_BIN(rtc_base[0x7ffa]);
> + sec = CONV_BCD_TO_BIN(rtc_base[0x7ff9]);
> +
> + /* Start the update to the time again */
> + rtc_base[0x7ff8] = 0x00;
> +
> + return mktime(year, month, day, hour, min, sec);
> +}
> +
> +int m48t37y_set_time(unsigned long sec)
> +{
> + unsigned char *rtc_base = SEQUOIA_RTC_BASE_ADDR;
> + struct rtc_time tm;
> +
> + /* convert to a more useful format -- note months count from 0 */
> + to_tm(sec, &tm);
> + tm.tm_mon += 1;
> +
> + /* enable writing */
> + rtc_base[0x7ff8] = 0x80;
> +
> + /* year */
> + rtc_base[0x7fff] = CONV_BIN_TO_BCD(tm.tm_year % 100);
> + rtc_base[0x7ff1] = CONV_BIN_TO_BCD(tm.tm_year / 100);
> +
> + /* month */
> + rtc_base[0x7ffe] = CONV_BIN_TO_BCD(tm.tm_mon);
> +
> + /* day */
> + rtc_base[0x7ffd] = CONV_BIN_TO_BCD(tm.tm_mday);
> +
> + /* hour/min/sec */
> + rtc_base[0x7ffb] = CONV_BIN_TO_BCD(tm.tm_hour);
> + rtc_base[0x7ffa] = CONV_BIN_TO_BCD(tm.tm_min);
> + rtc_base[0x7ff9] = CONV_BIN_TO_BCD(tm.tm_sec);
> +
> + /* day of week -- not really used, but let's keep it up-to-date */
> + rtc_base[0x7ffc] = CONV_BIN_TO_BCD(tm.tm_wday + 1);
> +
> + /* disable writing */
> + rtc_base[0x7ff8] = 0x00;
> +
> + return 0;
> +}
RTC driver is better.
It's very simple and easy to write, see drivers/rtc .
> +void __init plat_setup(void)
plat_mem_setup
> diff -Naur a/arch/mips/pmc-sierra/sequoia/setup.h b/arch/mips/pmc-sierra/sequoia/setup.h
> --- a/arch/mips/pmc-sierra/sequoia/setup.h 1969-12-31 16:00:00.000000000 -0800
> +++ b/arch/mips/pmc-sierra/sequoia/setup.h 2006-06-22 11:48:21.000000000 -0700
> @@ -0,0 +1,17 @@
> +/*
> + * Copyright 2006 PMC-Sierra
> + * Author: PMC Sierra Inc (thotakir@xxxxxxxxxxxxxx)
> + *
> + * Board specific definititions for the PMC-Sierra Sequoia
> + *
> + */
> +
> +#ifndef __SETUP_H__
> +#define __SETUP_H__
> +
> +/* Real Time Clock base */
> +#define CONV_BCD_TO_BIN(val) (((val) & 0xf) + (((val) >> 4) * 10))
> +#define CONV_BIN_TO_BCD(val) (((val) % 10) + (((val) / 10) << 4))
> +
> +#endif /* __SETUP_H__ */
You should use #include <linux/bcd.h> .
Yoichi
