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40220c1a19
linux/arch/m68k/kernel/setup.c
David Howells 40220c1a19 IRQ: Use the new typedef for interrupt handler function pointers 
Use the new typedef for interrupt handler function pointers rather than
actually spelling out the full thing each time.  This was scripted with the
following small shell script:

#!/bin/sh
egrep -nHrl -e 'irqreturn_t[ 	]*[(][*]' $* |
while read i
do
    echo $i
    perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $?
done

Signed-Off-By: David Howells <dhowells@redhat.com>
2006-10-09 12:19:47 +01:00

535 lines
13 KiB
C
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/*
* linux/arch/m68k/kernel/setup.c
*
* Copyright (C) 1995 Hamish Macdonald
*/
/*
* This file handles the architecture-dependent parts of system setup
*/
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/fs.h>
#include <linux/console.h>
#include <linux/genhd.h>
#include <linux/errno.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/seq_file.h>
#include <linux/module.h>
#include <linux/initrd.h>
#include <asm/bootinfo.h>
#include <asm/setup.h>
#include <asm/irq.h>
#include <asm/io.h>
#include <asm/machdep.h>
#ifdef CONFIG_AMIGA
#include <asm/amigahw.h>
#endif
#ifdef CONFIG_ATARI
#include <asm/atarihw.h>
#include <asm/atari_stram.h>
#endif
#ifdef CONFIG_SUN3X
#include <asm/dvma.h>
#endif
unsigned long m68k_machtype;
unsigned long m68k_cputype;
unsigned long m68k_fputype;
unsigned long m68k_mmutype;
#ifdef CONFIG_VME
unsigned long vme_brdtype;
#endif
int m68k_is040or060;
extern int end;
extern unsigned long availmem;
int m68k_num_memory;
int m68k_realnum_memory;
unsigned long m68k_memoffset;
struct mem_info m68k_memory[NUM_MEMINFO];
static struct mem_info m68k_ramdisk;
static char m68k_command_line[CL_SIZE];
char m68k_debug_device[6] = "";
void (*mach_sched_init) (irq_handler_t handler) __initdata = NULL;
/* machine dependent irq functions */
void (*mach_init_IRQ) (void) __initdata = NULL;
void (*mach_get_model) (char *model);
int (*mach_get_hardware_list) (char *buffer);
/* machine dependent timer functions */
unsigned long (*mach_gettimeoffset) (void);
int (*mach_hwclk) (int, struct rtc_time*);
int (*mach_set_clock_mmss) (unsigned long);
unsigned int (*mach_get_ss)(void);
int (*mach_get_rtc_pll)(struct rtc_pll_info *);
int (*mach_set_rtc_pll)(struct rtc_pll_info *);
void (*mach_reset)( void );
void (*mach_halt)( void );
void (*mach_power_off)( void );
long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
#ifdef CONFIG_HEARTBEAT
void (*mach_heartbeat) (int);
EXPORT_SYMBOL(mach_heartbeat);
#endif
#ifdef CONFIG_M68K_L2_CACHE
void (*mach_l2_flush) (int);
#endif
#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
void (*mach_beep)(unsigned int, unsigned int);
#endif
#if defined(CONFIG_ISA) && defined(MULTI_ISA)
int isa_type;
int isa_sex;
EXPORT_SYMBOL(isa_type);
EXPORT_SYMBOL(isa_sex);
#endif
extern int amiga_parse_bootinfo(const struct bi_record *);
extern int atari_parse_bootinfo(const struct bi_record *);
extern int mac_parse_bootinfo(const struct bi_record *);
extern int q40_parse_bootinfo(const struct bi_record *);
extern int bvme6000_parse_bootinfo(const struct bi_record *);
extern int mvme16x_parse_bootinfo(const struct bi_record *);
extern int mvme147_parse_bootinfo(const struct bi_record *);
extern int hp300_parse_bootinfo(const struct bi_record *);
extern void config_amiga(void);
extern void config_atari(void);
extern void config_mac(void);
extern void config_sun3(void);
extern void config_apollo(void);
extern void config_mvme147(void);
extern void config_mvme16x(void);
extern void config_bvme6000(void);
extern void config_hp300(void);
extern void config_q40(void);
extern void config_sun3x(void);
extern void mac_debugging_short (int, short);
extern void mac_debugging_long (int, long);
#define MASK_256K 0xfffc0000
extern void paging_init(void);
static void __init m68k_parse_bootinfo(const struct bi_record *record)
{
while (record->tag != BI_LAST) {
int unknown = 0;
const unsigned long *data = record->data;
switch (record->tag) {
case BI_MACHTYPE:
case BI_CPUTYPE:
case BI_FPUTYPE:
case BI_MMUTYPE:
/* Already set up by head.S */
break;
case BI_MEMCHUNK:
if (m68k_num_memory < NUM_MEMINFO) {
m68k_memory[m68k_num_memory].addr = data[0];
m68k_memory[m68k_num_memory].size = data[1];
m68k_num_memory++;
} else
printk("m68k_parse_bootinfo: too many memory chunks\n");
break;
case BI_RAMDISK:
m68k_ramdisk.addr = data[0];
m68k_ramdisk.size = data[1];
break;
case BI_COMMAND_LINE:
strlcpy(m68k_command_line, (const char *)data, sizeof(m68k_command_line));
break;
default:
if (MACH_IS_AMIGA)
unknown = amiga_parse_bootinfo(record);
else if (MACH_IS_ATARI)
unknown = atari_parse_bootinfo(record);
else if (MACH_IS_MAC)
unknown = mac_parse_bootinfo(record);
else if (MACH_IS_Q40)
unknown = q40_parse_bootinfo(record);
else if (MACH_IS_BVME6000)
unknown = bvme6000_parse_bootinfo(record);
else if (MACH_IS_MVME16x)
unknown = mvme16x_parse_bootinfo(record);
else if (MACH_IS_MVME147)
unknown = mvme147_parse_bootinfo(record);
else if (MACH_IS_HP300)
unknown = hp300_parse_bootinfo(record);
else
unknown = 1;
}
if (unknown)
printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
record->tag);
record = (struct bi_record *)((unsigned long)record+record->size);
}
m68k_realnum_memory = m68k_num_memory;
#ifdef CONFIG_SINGLE_MEMORY_CHUNK
if (m68k_num_memory > 1) {
printk("Ignoring last %i chunks of physical memory\n",
(m68k_num_memory - 1));
m68k_num_memory = 1;
}
m68k_memoffset = m68k_memory[0].addr-PAGE_OFFSET;
#endif
}
void __init setup_arch(char **cmdline_p)
{
extern int _etext, _edata, _end;
#ifndef CONFIG_SUN3
unsigned long endmem, startmem;
#endif
int i;
char *p, *q;
/* The bootinfo is located right after the kernel bss */
m68k_parse_bootinfo((const struct bi_record *)&_end);
if (CPU_IS_040)
m68k_is040or060 = 4;
else if (CPU_IS_060)
m68k_is040or060 = 6;
/* FIXME: m68k_fputype is passed in by Penguin booter, which can
* be confused by software FPU emulation. BEWARE.
* We should really do our own FPU check at startup.
* [what do we do with buggy 68LC040s? if we have problems
* with them, we should add a test to check_bugs() below] */
#ifndef CONFIG_M68KFPU_EMU_ONLY
/* clear the fpu if we have one */
if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
volatile int zero = 0;
asm __volatile__ ("frestore %0" : : "m" (zero));
}
#endif
if (CPU_IS_060) {
u32 pcr;
asm (".chip 68060; movec %%pcr,%0; .chip 68k"
: "=d" (pcr));
if (((pcr >> 8) & 0xff) <= 5) {
printk("Enabling workaround for errata I14\n");
asm (".chip 68060; movec %0,%%pcr; .chip 68k"
: : "d" (pcr | 0x20));
}
}
init_mm.start_code = PAGE_OFFSET;
init_mm.end_code = (unsigned long) &_etext;
init_mm.end_data = (unsigned long) &_edata;
init_mm.brk = (unsigned long) &_end;
*cmdline_p = m68k_command_line;
memcpy(saved_command_line, *cmdline_p, CL_SIZE);
/* Parse the command line for arch-specific options.
* For the m68k, this is currently only "debug=xxx" to enable printing
* certain kernel messages to some machine-specific device.
*/
for( p = *cmdline_p; p && *p; ) {
i = 0;
if (!strncmp( p, "debug=", 6 )) {
strlcpy( m68k_debug_device, p+6, sizeof(m68k_debug_device) );
if ((q = strchr( m68k_debug_device, ' ' ))) *q = 0;
i = 1;
}
#ifdef CONFIG_ATARI
/* This option must be parsed very early */
if (!strncmp( p, "switches=", 9 )) {
extern void atari_switches_setup( const char *, int );
atari_switches_setup( p+9, (q = strchr( p+9, ' ' )) ?
(q - (p+9)) : strlen(p+9) );
i = 1;
}
#endif
if (i) {
/* option processed, delete it */
if ((q = strchr( p, ' ' )))
strcpy( p, q+1 );
else
*p = 0;
} else {
if ((p = strchr( p, ' ' ))) ++p;
}
}
#ifdef CONFIG_DUMMY_CONSOLE
conswitchp = &dummy_con;
#endif
switch (m68k_machtype) {
#ifdef CONFIG_AMIGA
case MACH_AMIGA:
config_amiga();
break;
#endif
#ifdef CONFIG_ATARI
case MACH_ATARI:
config_atari();
break;
#endif
#ifdef CONFIG_MAC
case MACH_MAC:
config_mac();
break;
#endif
#ifdef CONFIG_SUN3
case MACH_SUN3:
config_sun3();
break;
#endif
#ifdef CONFIG_APOLLO
case MACH_APOLLO:
config_apollo();
break;
#endif
#ifdef CONFIG_MVME147
case MACH_MVME147:
config_mvme147();
break;
#endif
#ifdef CONFIG_MVME16x
case MACH_MVME16x:
config_mvme16x();
break;
#endif
#ifdef CONFIG_BVME6000
case MACH_BVME6000:
config_bvme6000();
break;
#endif
#ifdef CONFIG_HP300
case MACH_HP300:
config_hp300();
break;
#endif
#ifdef CONFIG_Q40
case MACH_Q40:
config_q40();
break;
#endif
#ifdef CONFIG_SUN3X
case MACH_SUN3X:
config_sun3x();
break;
#endif
default:
panic ("No configuration setup");
}
#ifndef CONFIG_SUN3
startmem= m68k_memory[0].addr;
endmem = startmem + m68k_memory[0].size;
high_memory = (void *)PAGE_OFFSET;
for (i = 0; i < m68k_num_memory; i++) {
m68k_memory[i].size &= MASK_256K;
if (m68k_memory[i].addr < startmem)
startmem = m68k_memory[i].addr;
if (m68k_memory[i].addr+m68k_memory[i].size > endmem)
endmem = m68k_memory[i].addr+m68k_memory[i].size;
high_memory += m68k_memory[i].size;
}
availmem += init_bootmem_node(NODE_DATA(0), availmem >> PAGE_SHIFT,
startmem >> PAGE_SHIFT, endmem >> PAGE_SHIFT);
for (i = 0; i < m68k_num_memory; i++)
free_bootmem(m68k_memory[i].addr, m68k_memory[i].size);
reserve_bootmem(m68k_memory[0].addr, availmem - m68k_memory[0].addr);
#ifdef CONFIG_BLK_DEV_INITRD
if (m68k_ramdisk.size) {
reserve_bootmem(m68k_ramdisk.addr, m68k_ramdisk.size);
initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
initrd_end = initrd_start + m68k_ramdisk.size;
printk ("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
}
#endif
#ifdef CONFIG_ATARI
if (MACH_IS_ATARI)
atari_stram_reserve_pages((void *)availmem);
#endif
#ifdef CONFIG_SUN3X
if (MACH_IS_SUN3X) {
dvma_init();
}
#endif
#endif /* !CONFIG_SUN3 */
paging_init();
/* set ISA defs early as possible */
#if defined(CONFIG_ISA) && defined(MULTI_ISA)
#if defined(CONFIG_Q40)
if (MACH_IS_Q40) {
isa_type = Q40_ISA;
isa_sex = 0;
}
#elif defined(CONFIG_GG2)
if (MACH_IS_AMIGA && AMIGAHW_PRESENT(GG2_ISA)){
isa_type = GG2_ISA;
isa_sex = 0;
}
#elif defined(CONFIG_AMIGA_PCMCIA)
if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)){
isa_type = AG_ISA;
isa_sex = 1;
}
#endif
#endif
}
static int show_cpuinfo(struct seq_file *m, void *v)
{
const char *cpu, *mmu, *fpu;
unsigned long clockfreq, clockfactor;
#define LOOP_CYCLES_68020 (8)
#define LOOP_CYCLES_68030 (8)
#define LOOP_CYCLES_68040 (3)
#define LOOP_CYCLES_68060 (1)
if (CPU_IS_020) {
cpu = "68020";
clockfactor = LOOP_CYCLES_68020;
} else if (CPU_IS_030) {
cpu = "68030";
clockfactor = LOOP_CYCLES_68030;
} else if (CPU_IS_040) {
cpu = "68040";
clockfactor = LOOP_CYCLES_68040;
} else if (CPU_IS_060) {
cpu = "68060";
clockfactor = LOOP_CYCLES_68060;
} else {
cpu = "680x0";
clockfactor = 0;
}
#ifdef CONFIG_M68KFPU_EMU_ONLY
fpu="none(soft float)";
#else
if (m68k_fputype & FPU_68881)
fpu = "68881";
else if (m68k_fputype & FPU_68882)
fpu = "68882";
else if (m68k_fputype & FPU_68040)
fpu = "68040";
else if (m68k_fputype & FPU_68060)
fpu = "68060";
else if (m68k_fputype & FPU_SUNFPA)
fpu = "Sun FPA";
else
fpu = "none";
#endif
if (m68k_mmutype & MMU_68851)
mmu = "68851";
else if (m68k_mmutype & MMU_68030)
mmu = "68030";
else if (m68k_mmutype & MMU_68040)
mmu = "68040";
else if (m68k_mmutype & MMU_68060)
mmu = "68060";
else if (m68k_mmutype & MMU_SUN3)
mmu = "Sun-3";
else if (m68k_mmutype & MMU_APOLLO)
mmu = "Apollo";
else
mmu = "unknown";
clockfreq = loops_per_jiffy*HZ*clockfactor;
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/(500000/HZ),(loops_per_jiffy/(5000/HZ))%100,
loops_per_jiffy);
return 0;
}
static void *c_start(struct seq_file *m, loff_t *pos)
{
return *pos < 1 ? (void *)1 : NULL;
}
static void *c_next(struct seq_file *m, void *v, loff_t *pos)
{
++*pos;
return NULL;
}
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,
};
int get_hardware_list(char *buffer)
{
int len = 0;
char model[80];
unsigned long mem;
int i;
if (mach_get_model)
mach_get_model(model);
else
strcpy(model, "Unknown m68k");
len += sprintf(buffer+len, "Model:\t\t%s\n", model);
for (mem = 0, i = 0; i < m68k_num_memory; i++)
mem += m68k_memory[i].size;
len += sprintf(buffer+len, "System Memory:\t%ldK\n", mem>>10);
if (mach_get_hardware_list)
len += mach_get_hardware_list(buffer+len);
return(len);
}
void check_bugs(void)
{
#ifndef CONFIG_M68KFPU_EMU
if (m68k_fputype == 0) {
printk( KERN_EMERG "*** YOU DO NOT HAVE A FLOATING POINT UNIT, "
"WHICH IS REQUIRED BY LINUX/M68K ***\n" );
printk( KERN_EMERG "Upgrade your hardware or join the FPU "
"emulation project\n" );
panic( "no FPU" );
}
#endif /* !CONFIG_M68KFPU_EMU */
}
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