setup.c
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上传日期:2013-04-10
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- /*
- * setup.c
- *
- * BRIEF MODULE DESCRIPTION
- * Galileo Evaluation Boards - board dependent boot routines
- *
- * Copyright (C) 2000 RidgeRun, Inc.
- * Author: RidgeRun, Inc.
- * glonnon@ridgerun.com, skranz@ridgerun.com, stevej@ridgerun.com
- *
- * 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/types.h>
- #include <linux/mm.h>
- #include <linux/swap.h>
- #include <linux/ioport.h>
- #include <linux/sched.h>
- #include <linux/interrupt.h>
- #include <linux/pci.h>
- #include <linux/timex.h>
- #include <asm/bootinfo.h>
- #include <asm/page.h>
- #include <asm/bootinfo.h>
- #include <asm/io.h>
- #include <asm/irq.h>
- #include <asm/pci.h>
- #include <asm/processor.h>
- #include <asm/ptrace.h>
- #include <asm/reboot.h>
- #include <asm/mc146818rtc.h>
- #include <asm/traps.h>
- #include <linux/version.h>
- #include <linux/bootmem.h>
- extern struct rtc_ops no_rtc_ops;
- /* These functions are used for rebooting or halting the machine*/
- extern void galileo_machine_restart(char *command);
- extern void galileo_machine_halt(void);
- extern void galileo_machine_power_off(void);
- /*
- *This structure holds pointers to the pci configuration space accesses
- *and interrupts allocating routine for device over the PCI
- */
- extern struct pci_ops galileo_pci_ops;
- extern unsigned long mips_machgroup;
- char arcs_cmdline[CL_SIZE] = { "console=ttyS0,115200 "
- "root=/dev/nfs rw nfsroot=192.168.1.1:/mnt/disk2/fs.gal "
- "ip=192.168.1.211:192.168.1.1:::gt::"
- };
- //struct eeprom_parameters eeprom_param;
- /*
- * This function is added because arch/mips/mm/init.c needs it
- * basically it does nothing
- */
- void prom_free_prom_memory(void)
- {
- }
- extern void (*board_time_init) (struct irqaction * irq);
- static unsigned char galileo_rtc_read_data(unsigned long addr)
- {
- return 0;
- }
- static void galileo_rtc_write_data(unsigned char data, unsigned long addr)
- {
- }
- static int galileo_rtc_bcd_mode(void)
- {
- return 0;
- }
- struct rtc_ops galileo_rtc_ops = {
- &galileo_rtc_read_data,
- &galileo_rtc_write_data,
- &galileo_rtc_bcd_mode
- };
- void __init bus_error_init(void) { /* nothing */ }
- /********************************************************************
- *ev64120_setup -
- *
- *Initializes basic routines and structures pointers, memory size (as
- *given by the bios and saves the command line.
- *
- *
- *Inputs :
- *
- *Outpus :
- *
- *********************************************************************/
- extern void galileo_time_init();
- void ev64120_setup(void)
- {
- unsigned int i, j;
- //printk(KERN_INFO "ev64120_setupn");
- _machine_restart = galileo_machine_restart;
- _machine_halt = galileo_machine_halt;
- _machine_power_off = galileo_machine_power_off;
- rtc_ops = &galileo_rtc_ops;
- board_time_init = galileo_time_init;
- set_io_port_base(KSEG1);
- #ifdef CONFIG_L2_L3_CACHE
- #error "external cache not implemented yet"
- config_register = read_32bit_cp0_register(CP0_CONFIG);
- printk("nnnchecking second level cache cp0_config = %08lxn",
- config_register);
- if (config_register & CONF_SC) { // second/third level cache available
- config_register = config_register & (1 << 12);
- write_32bit_cp0_register(CP0_CONFIG, config_register);
- printk
- ("nnnchecking second level cache cp0_config = %08lxn",
- config_register);
- }
- #endif
- }
- const char *get_system_type(void)
- {
- return "Galileo EV64120A";
- }
- /*
- * SetUpBootInfo -
- *
- * This function is called at very first stages of kernel startup.
- * It specifies for the kernel the evaluation board that the linux
- * is running on. Then it saves the eprom parameters that holds the
- * command line, memory size etc...
- *
- * Inputs :
- * argc - nothing
- * argv - holds a pointer to the eprom parameters
- * envp - nothing
- */
- void SetUpBootInfo(int argc, char **argv, char **envp)
- {
- mips_machgroup = MACH_GROUP_GALILEO;
- mips_machtype = MACH_EV64120A;
- }
- void __init prom_init(int a, char **b, char **c, int *d)
- {
- unsigned long free_start, free_end, start_pfn, bootmap_size;
- mips_machgroup = MACH_GROUP_GALILEO;
- add_memory_region(0, 32 << 20, BOOT_MEM_RAM);
- }