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android_kernel_xiaomi_sm8350/arch/m68knommu/kernel/setup.c
Greg Ungerer 7877d01e8e [PATCH] m68knommu: cleanup setup.c 
A cleanup of m68knommu/kernel/setup.c :

- No need to initialize global pointers to NULL, they will have that value
  automatically, and they eat up space in my data segment image in FLASH.
- Remove get_cpuinfo.  It has been replaced by show_cpuinfo.

Signed-off-by: Philippe De Muyter <phdm@macqel.be>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-25 17:43:34 -07:00

336 lines
8.8 KiB
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/*
* linux/arch/m68knommu/kernel/setup.c
*
* Copyright (C) 1999-2004 Greg Ungerer (gerg@snapgear.com)
* Copyright (C) 1998,1999 D. Jeff Dionne <jeff@lineo.ca>
* Copyleft ()) 2000 James D. Schettine {james@telos-systems.com}
* Copyright (C) 1998 Kenneth Albanowski <kjahds@kjahds.com>
* Copyright (C) 1995 Hamish Macdonald
* Copyright (C) 2000 Lineo Inc. (www.lineo.com)
* Copyright (C) 2001 Lineo, Inc. <www.lineo.com>
*
* 68VZ328 Fixes/support Evan Stawnyczy <e@lineo.ca>
*/
/*
* This file handles the architecture-dependent parts of system setup
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/fb.h>
#include <linux/module.h>
#include <linux/console.h>
#include <linux/genhd.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/major.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
#include <linux/init.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/machdep.h>
#ifdef CONFIG_BLK_DEV_INITRD
#include <asm/pgtable.h>
#endif
unsigned long memory_start;
unsigned long memory_end;
EXPORT_SYMBOL(memory_start);
EXPORT_SYMBOL(memory_end);
char command_line[COMMAND_LINE_SIZE];
/* setup some dummy routines */
static void dummy_waitbut(void)
{
}
void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *));
void (*mach_tick)( void );
/* machine dependent keyboard functions */
int (*mach_keyb_init) (void);
int (*mach_kbdrate) (struct kbd_repeat *);
void (*mach_kbd_leds) (unsigned int);
/* machine dependent irq functions */
void (*mach_init_IRQ) (void);
irqreturn_t (*(*mach_default_handler)[]) (int, void *, struct pt_regs *);
int (*mach_get_irq_list) (struct seq_file *, void *);
void (*mach_process_int) (int irq, struct pt_regs *fp);
void (*mach_trap_init) (void);
/* machine dependent timer functions */
unsigned long (*mach_gettimeoffset) (void);
void (*mach_gettod) (int*, int*, int*, int*, int*, int*);
int (*mach_hwclk) (int, struct hwclk_time*);
int (*mach_set_clock_mmss) (unsigned long);
void (*mach_mksound)( unsigned int count, unsigned int ticks );
void (*mach_reset)( void );
void (*waitbut)(void) = dummy_waitbut;
void (*mach_debug_init)(void);
void (*mach_halt)( void );
void (*mach_power_off)( void );
#ifdef CONFIG_M68000
#define CPU "MC68000"
#endif
#ifdef CONFIG_M68328
#define CPU "MC68328"
#endif
#ifdef CONFIG_M68EZ328
#define CPU "MC68EZ328"
#endif
#ifdef CONFIG_M68VZ328
#define CPU "MC68VZ328"
#endif
#ifdef CONFIG_M68332
#define CPU "MC68332"
#endif
#ifdef CONFIG_M68360
#define CPU "MC68360"
#endif
#if defined(CONFIG_M5206)
#define CPU "COLDFIRE(m5206)"
#endif
#if defined(CONFIG_M5206e)
#define CPU "COLDFIRE(m5206e)"
#endif
#if defined(CONFIG_M520x)
#define CPU "COLDFIRE(m520x)"
#endif
#if defined(CONFIG_M523x)
#define CPU "COLDFIRE(m523x)"
#endif
#if defined(CONFIG_M5249)
#define CPU "COLDFIRE(m5249)"
#endif
#if defined(CONFIG_M5271)
#define CPU "COLDFIRE(m5270/5271)"
#endif
#if defined(CONFIG_M5272)
#define CPU "COLDFIRE(m5272)"
#endif
#if defined(CONFIG_M5275)
#define CPU "COLDFIRE(m5274/5275)"
#endif
#if defined(CONFIG_M528x)
#define CPU "COLDFIRE(m5280/5282)"
#endif
#if defined(CONFIG_M5307)
#define CPU "COLDFIRE(m5307)"
#endif
#if defined(CONFIG_M532x)
#define CPU "COLDFIRE(m532x)"
#endif
#if defined(CONFIG_M5407)
#define CPU "COLDFIRE(m5407)"
#endif
#ifndef CPU
#define CPU "UNKNOWN"
#endif
/* (es) */
/* note: why is this defined here? the must be a better place to put this */
#if defined( CONFIG_TELOS) || defined( CONFIG_UCDIMM ) || defined( CONFIG_UCSIMM ) || defined(CONFIG_DRAGEN2) || (defined( CONFIG_PILOT ) && defined( CONFIG_M68328 ))
#define CAT_ROMARRAY
#endif
/* (/es) */
extern int _stext, _etext, _sdata, _edata, _sbss, _ebss, _end;
extern int _ramstart, _ramend;
void setup_arch(char **cmdline_p)
{
int bootmap_size;
#if defined(CAT_ROMARRAY) && defined(DEBUG)
extern int __data_rom_start;
extern int __data_start;
int *romarray = (int *)((int) &__data_rom_start +
(int)&_edata - (int)&__data_start);
#endif
memory_start = PAGE_ALIGN(_ramstart);
memory_end = _ramend; /* by now the stack is part of the init task */
init_mm.start_code = (unsigned long) &_stext;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) 0;
config_BSP(&command_line[0], sizeof(command_line));
printk(KERN_INFO "\x0F\r\n\nuClinux/" CPU "\n");
#ifdef CONFIG_UCDIMM
printk(KERN_INFO "uCdimm by Lineo, Inc. <www.lineo.com>\n");
#endif
#ifdef CONFIG_M68VZ328
printk(KERN_INFO "M68VZ328 support by Evan Stawnyczy <e@lineo.ca>\n");
#endif
#ifdef CONFIG_COLDFIRE
printk(KERN_INFO "COLDFIRE port done by Greg Ungerer, gerg@snapgear.com\n");
#ifdef CONFIG_M5307
printk(KERN_INFO "Modified for M5307 by Dave Miller, dmiller@intellistor.com\n");
#endif
#ifdef CONFIG_ELITE
printk(KERN_INFO "Modified for M5206eLITE by Rob Scott, rscott@mtrob.fdns.net\n");
#endif
#ifdef CONFIG_TELOS
printk(KERN_INFO "Modified for Omnia ToolVox by James D. Schettine, james@telos-systems.com\n");
#endif
#endif
printk(KERN_INFO "Flat model support (C) 1998,1999 Kenneth Albanowski, D. Jeff Dionne\n");
#if defined( CONFIG_PILOT ) && defined( CONFIG_M68328 )
printk(KERN_INFO "TRG SuperPilot FLASH card support <info@trgnet.com>\n");
#endif
#if defined( CONFIG_PILOT ) && defined( CONFIG_M68EZ328 )
printk(KERN_INFO "PalmV support by Lineo Inc. <jeff@uclinux.com>\n");
#endif
#ifdef CONFIG_M68EZ328ADS
printk(KERN_INFO "M68EZ328ADS board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
#endif
#ifdef CONFIG_ALMA_ANS
printk(KERN_INFO "Alma Electronics board support (C) 1999 Vladimir Gurevich <vgurevic@cisco.com>\n");
#endif
#if defined (CONFIG_M68360)
printk(KERN_INFO "QUICC port done by SED Systems <hamilton@sedsystems.ca>,\n");
printk(KERN_INFO "based on 2.0.38 port by Lineo Inc. <mleslie@lineo.com>.\n");
#endif
#ifdef CONFIG_DRAGEN2
printk(KERN_INFO "DragonEngine II board support by Georges Menie\n");
#endif
#ifdef CONFIG_M5235EVB
printk(KERN_INFO "Motorola M5235EVB support (C)2005 Syn-tech Systems, Inc. (Jate Sujjavanich)");
#endif
#ifdef DEBUG
printk(KERN_DEBUG "KERNEL -> TEXT=0x%06x-0x%06x DATA=0x%06x-0x%06x "
"BSS=0x%06x-0x%06x\n", (int) &_stext, (int) &_etext,
(int) &_sdata, (int) &_edata,
(int) &_sbss, (int) &_ebss);
printk(KERN_DEBUG "KERNEL -> ROMFS=0x%06x-0x%06x MEM=0x%06x-0x%06x "
"STACK=0x%06x-0x%06x\n",
#ifdef CAT_ROMARRAY
(int) romarray, ((int) romarray) + romarray[2],
#else
(int) &_ebss, (int) memory_start,
#endif
(int) memory_start, (int) memory_end,
(int) memory_end, (int) _ramend);
#endif
/* Keep a copy of command line */
*cmdline_p = &command_line[0];
memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
saved_command_line[COMMAND_LINE_SIZE-1] = 0;
#ifdef DEBUG
if (strlen(*cmdline_p))
printk(KERN_DEBUG "Command line: '%s'\n", *cmdline_p);
#endif
#if defined(CONFIG_FRAMEBUFFER_CONSOLE) && defined(CONFIG_DUMMY_CONSOLE)
conswitchp = &dummy_con;
#endif
/*
* Give all the memory to the bootmap allocator, tell it to put the
* boot mem_map at the start of memory.
*/
bootmap_size = init_bootmem_node(
NODE_DATA(0),
memory_start >> PAGE_SHIFT, /* map goes here */
PAGE_OFFSET >> PAGE_SHIFT, /* 0 on coldfire */
memory_end >> PAGE_SHIFT);
/*
* Free the usable memory, we have to make sure we do not free
* the bootmem bitmap so we then reserve it after freeing it :-)
*/
free_bootmem(memory_start, memory_end - memory_start);
reserve_bootmem(memory_start, bootmap_size);
/*
* Get kmalloc into gear.
*/
paging_init();
}
/*
* Get CPU information for use by the procfs.
*/
static int show_cpuinfo(struct seq_file *m, void *v)
{
char *cpu, *mmu, *fpu;
u_long clockfreq;
cpu = CPU;
mmu = "none";
fpu = "none";
#ifdef CONFIG_COLDFIRE
clockfreq = (loops_per_jiffy*HZ)*3;
#else
clockfreq = (loops_per_jiffy*HZ)*16;
#endif
seq_printf(m, "CPU:\t\t%s\n"
"MMU:\t\t%s\n"
"FPU:\t\t%s\n"
"Clocking:\t%lu.%1luMHz\n"
"BogoMips:\t%lu.%02lu\n"
"Calibration:\t%lu loops\n",
cpu, mmu, fpu,
clockfreq/1000000,(clockfreq/100000)%10,
(loops_per_jiffy*HZ)/500000,((loops_per_jiffy*HZ)/5000)%100,
(loops_per_jiffy*HZ));
return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
{
return *pos < NR_CPUS ? ((void *) 0x12345678) : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
++*pos;
return c_start(m, pos);
}
static void c_stop(struct seq_file *m, void *v)
{
}
struct seq_operations cpuinfo_op = {
.start = c_start,
.next = c_next,
.stop = c_stop,
.show = show_cpuinfo,
};
void arch_gettod(int *year, int *mon, int *day, int *hour,
int *min, int *sec)
{
if (mach_gettod)
mach_gettod(year, mon, day, hour, min, sec);
else
*year = *mon = *day = *hour = *min = *sec = 0;
}
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