0c79358b87
Signed-off-by: Kars de Jong <jongk@linux-m68k.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
552 lines
13 KiB
C
552 lines
13 KiB
C
/*
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* linux/arch/m68k/kernel/setup.c
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*
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* Copyright (C) 1995 Hamish Macdonald
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*/
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/*
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* This file handles the architecture-dependent parts of system setup
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*/
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#include <linux/config.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/fs.h>
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#include <linux/console.h>
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#include <linux/genhd.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/init.h>
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#include <linux/bootmem.h>
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#include <linux/seq_file.h>
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#include <linux/module.h>
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#include <linux/initrd.h>
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#include <asm/bootinfo.h>
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#include <asm/setup.h>
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#include <asm/irq.h>
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#include <asm/io.h>
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#include <asm/machdep.h>
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#ifdef CONFIG_AMIGA
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#include <asm/amigahw.h>
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#endif
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#ifdef CONFIG_ATARI
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#include <asm/atarihw.h>
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#include <asm/atari_stram.h>
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#endif
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#ifdef CONFIG_SUN3X
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#include <asm/dvma.h>
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#endif
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unsigned long m68k_machtype;
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unsigned long m68k_cputype;
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unsigned long m68k_fputype;
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unsigned long m68k_mmutype;
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#ifdef CONFIG_VME
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unsigned long vme_brdtype;
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#endif
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int m68k_is040or060;
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extern int end;
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extern unsigned long availmem;
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int m68k_num_memory;
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int m68k_realnum_memory;
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unsigned long m68k_memoffset;
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struct mem_info m68k_memory[NUM_MEMINFO];
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static struct mem_info m68k_ramdisk;
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static char m68k_command_line[CL_SIZE];
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char m68k_debug_device[6] = "";
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void (*mach_sched_init) (irqreturn_t (*handler)(int, void *, struct pt_regs *)) __initdata = NULL;
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/* machine dependent irq functions */
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void (*mach_init_IRQ) (void) __initdata = NULL;
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irqreturn_t (*(*mach_default_handler)[]) (int, void *, struct pt_regs *);
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void (*mach_get_model) (char *model);
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int (*mach_get_hardware_list) (char *buffer);
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int (*mach_get_irq_list) (struct seq_file *, void *);
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irqreturn_t (*mach_process_int) (int, struct pt_regs *);
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/* machine dependent timer functions */
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unsigned long (*mach_gettimeoffset) (void);
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int (*mach_hwclk) (int, struct rtc_time*);
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int (*mach_set_clock_mmss) (unsigned long);
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unsigned int (*mach_get_ss)(void);
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int (*mach_get_rtc_pll)(struct rtc_pll_info *);
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int (*mach_set_rtc_pll)(struct rtc_pll_info *);
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void (*mach_reset)( void );
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void (*mach_halt)( void );
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void (*mach_power_off)( void );
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long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
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#if defined(CONFIG_AMIGA_FLOPPY) || defined(CONFIG_ATARI_FLOPPY)
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void (*mach_floppy_setup) (char *, int *) __initdata = NULL;
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#endif
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#ifdef CONFIG_HEARTBEAT
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void (*mach_heartbeat) (int);
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EXPORT_SYMBOL(mach_heartbeat);
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#endif
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#ifdef CONFIG_M68K_L2_CACHE
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void (*mach_l2_flush) (int);
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#endif
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#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE)
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void (*mach_beep)(unsigned int, unsigned int);
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#endif
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#if defined(CONFIG_ISA) && defined(MULTI_ISA)
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int isa_type;
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int isa_sex;
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EXPORT_SYMBOL(isa_type);
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EXPORT_SYMBOL(isa_sex);
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#endif
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extern int amiga_parse_bootinfo(const struct bi_record *);
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extern int atari_parse_bootinfo(const struct bi_record *);
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extern int mac_parse_bootinfo(const struct bi_record *);
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extern int q40_parse_bootinfo(const struct bi_record *);
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extern int bvme6000_parse_bootinfo(const struct bi_record *);
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extern int mvme16x_parse_bootinfo(const struct bi_record *);
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extern int mvme147_parse_bootinfo(const struct bi_record *);
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extern int hp300_parse_bootinfo(const struct bi_record *);
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extern void config_amiga(void);
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extern void config_atari(void);
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extern void config_mac(void);
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extern void config_sun3(void);
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extern void config_apollo(void);
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extern void config_mvme147(void);
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extern void config_mvme16x(void);
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extern void config_bvme6000(void);
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extern void config_hp300(void);
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extern void config_q40(void);
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extern void config_sun3x(void);
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extern void mac_debugging_short (int, short);
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extern void mac_debugging_long (int, long);
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#define MASK_256K 0xfffc0000
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extern void paging_init(void);
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static void __init m68k_parse_bootinfo(const struct bi_record *record)
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{
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while (record->tag != BI_LAST) {
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int unknown = 0;
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const unsigned long *data = record->data;
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switch (record->tag) {
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case BI_MACHTYPE:
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case BI_CPUTYPE:
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case BI_FPUTYPE:
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case BI_MMUTYPE:
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/* Already set up by head.S */
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break;
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case BI_MEMCHUNK:
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if (m68k_num_memory < NUM_MEMINFO) {
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m68k_memory[m68k_num_memory].addr = data[0];
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m68k_memory[m68k_num_memory].size = data[1];
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m68k_num_memory++;
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} else
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printk("m68k_parse_bootinfo: too many memory chunks\n");
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break;
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case BI_RAMDISK:
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m68k_ramdisk.addr = data[0];
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m68k_ramdisk.size = data[1];
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break;
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case BI_COMMAND_LINE:
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strlcpy(m68k_command_line, (const char *)data, sizeof(m68k_command_line));
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break;
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default:
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if (MACH_IS_AMIGA)
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unknown = amiga_parse_bootinfo(record);
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else if (MACH_IS_ATARI)
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unknown = atari_parse_bootinfo(record);
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else if (MACH_IS_MAC)
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unknown = mac_parse_bootinfo(record);
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else if (MACH_IS_Q40)
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unknown = q40_parse_bootinfo(record);
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else if (MACH_IS_BVME6000)
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unknown = bvme6000_parse_bootinfo(record);
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else if (MACH_IS_MVME16x)
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unknown = mvme16x_parse_bootinfo(record);
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else if (MACH_IS_MVME147)
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unknown = mvme147_parse_bootinfo(record);
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else if (MACH_IS_HP300)
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unknown = hp300_parse_bootinfo(record);
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else
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unknown = 1;
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}
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if (unknown)
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printk("m68k_parse_bootinfo: unknown tag 0x%04x ignored\n",
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record->tag);
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record = (struct bi_record *)((unsigned long)record+record->size);
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}
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m68k_realnum_memory = m68k_num_memory;
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#ifdef CONFIG_SINGLE_MEMORY_CHUNK
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if (m68k_num_memory > 1) {
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printk("Ignoring last %i chunks of physical memory\n",
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(m68k_num_memory - 1));
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m68k_num_memory = 1;
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}
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m68k_memoffset = m68k_memory[0].addr-PAGE_OFFSET;
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#endif
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}
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void __init setup_arch(char **cmdline_p)
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{
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extern int _etext, _edata, _end;
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#ifndef CONFIG_SUN3
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unsigned long endmem, startmem;
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#endif
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int i;
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char *p, *q;
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/* The bootinfo is located right after the kernel bss */
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m68k_parse_bootinfo((const struct bi_record *)&_end);
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if (CPU_IS_040)
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m68k_is040or060 = 4;
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else if (CPU_IS_060)
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m68k_is040or060 = 6;
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/* FIXME: m68k_fputype is passed in by Penguin booter, which can
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* be confused by software FPU emulation. BEWARE.
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* We should really do our own FPU check at startup.
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* [what do we do with buggy 68LC040s? if we have problems
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* with them, we should add a test to check_bugs() below] */
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#ifndef CONFIG_M68KFPU_EMU_ONLY
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/* clear the fpu if we have one */
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if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060)) {
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volatile int zero = 0;
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asm __volatile__ ("frestore %0" : : "m" (zero));
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}
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#endif
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if (CPU_IS_060) {
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u32 pcr;
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asm (".chip 68060; movec %%pcr,%0; .chip 68k"
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: "=d" (pcr));
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if (((pcr >> 8) & 0xff) <= 5) {
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printk("Enabling workaround for errata I14\n");
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asm (".chip 68060; movec %0,%%pcr; .chip 68k"
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: : "d" (pcr | 0x20));
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}
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}
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init_mm.start_code = PAGE_OFFSET;
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init_mm.end_code = (unsigned long) &_etext;
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init_mm.end_data = (unsigned long) &_edata;
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init_mm.brk = (unsigned long) &_end;
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*cmdline_p = m68k_command_line;
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memcpy(saved_command_line, *cmdline_p, CL_SIZE);
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/* Parse the command line for arch-specific options.
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* For the m68k, this is currently only "debug=xxx" to enable printing
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* certain kernel messages to some machine-specific device.
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*/
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for( p = *cmdline_p; p && *p; ) {
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i = 0;
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if (!strncmp( p, "debug=", 6 )) {
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strlcpy( m68k_debug_device, p+6, sizeof(m68k_debug_device) );
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if ((q = strchr( m68k_debug_device, ' ' ))) *q = 0;
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i = 1;
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}
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#ifdef CONFIG_ATARI
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/* This option must be parsed very early */
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if (!strncmp( p, "switches=", 9 )) {
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extern void atari_switches_setup( const char *, int );
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atari_switches_setup( p+9, (q = strchr( p+9, ' ' )) ?
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(q - (p+9)) : strlen(p+9) );
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i = 1;
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}
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#endif
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if (i) {
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/* option processed, delete it */
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if ((q = strchr( p, ' ' )))
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strcpy( p, q+1 );
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else
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*p = 0;
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} else {
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if ((p = strchr( p, ' ' ))) ++p;
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}
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}
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#ifdef CONFIG_DUMMY_CONSOLE
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conswitchp = &dummy_con;
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#endif
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switch (m68k_machtype) {
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#ifdef CONFIG_AMIGA
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case MACH_AMIGA:
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config_amiga();
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break;
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#endif
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#ifdef CONFIG_ATARI
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case MACH_ATARI:
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config_atari();
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break;
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#endif
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#ifdef CONFIG_MAC
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case MACH_MAC:
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config_mac();
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break;
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#endif
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#ifdef CONFIG_SUN3
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case MACH_SUN3:
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config_sun3();
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break;
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#endif
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#ifdef CONFIG_APOLLO
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case MACH_APOLLO:
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config_apollo();
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break;
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#endif
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#ifdef CONFIG_MVME147
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case MACH_MVME147:
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config_mvme147();
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break;
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#endif
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#ifdef CONFIG_MVME16x
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case MACH_MVME16x:
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config_mvme16x();
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break;
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#endif
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#ifdef CONFIG_BVME6000
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case MACH_BVME6000:
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config_bvme6000();
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break;
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#endif
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#ifdef CONFIG_HP300
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case MACH_HP300:
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config_hp300();
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break;
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#endif
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#ifdef CONFIG_Q40
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case MACH_Q40:
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config_q40();
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break;
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#endif
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#ifdef CONFIG_SUN3X
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case MACH_SUN3X:
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config_sun3x();
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break;
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#endif
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default:
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panic ("No configuration setup");
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}
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#ifndef CONFIG_SUN3
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startmem= m68k_memory[0].addr;
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endmem = startmem + m68k_memory[0].size;
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high_memory = (void *)PAGE_OFFSET;
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for (i = 0; i < m68k_num_memory; i++) {
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m68k_memory[i].size &= MASK_256K;
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if (m68k_memory[i].addr < startmem)
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startmem = m68k_memory[i].addr;
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if (m68k_memory[i].addr+m68k_memory[i].size > endmem)
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endmem = m68k_memory[i].addr+m68k_memory[i].size;
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high_memory += m68k_memory[i].size;
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}
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availmem += init_bootmem_node(NODE_DATA(0), availmem >> PAGE_SHIFT,
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startmem >> PAGE_SHIFT, endmem >> PAGE_SHIFT);
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for (i = 0; i < m68k_num_memory; i++)
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free_bootmem(m68k_memory[i].addr, m68k_memory[i].size);
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reserve_bootmem(m68k_memory[0].addr, availmem - m68k_memory[0].addr);
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#ifdef CONFIG_BLK_DEV_INITRD
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if (m68k_ramdisk.size) {
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reserve_bootmem(m68k_ramdisk.addr, m68k_ramdisk.size);
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initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr);
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initrd_end = initrd_start + m68k_ramdisk.size;
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printk ("initrd: %08lx - %08lx\n", initrd_start, initrd_end);
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}
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#endif
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#ifdef CONFIG_ATARI
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if (MACH_IS_ATARI)
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atari_stram_reserve_pages((void *)availmem);
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#endif
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#ifdef CONFIG_SUN3X
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if (MACH_IS_SUN3X) {
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dvma_init();
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}
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#endif
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#endif /* !CONFIG_SUN3 */
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paging_init();
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/* set ISA defs early as possible */
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#if defined(CONFIG_ISA) && defined(MULTI_ISA)
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#if defined(CONFIG_Q40)
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if (MACH_IS_Q40) {
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isa_type = Q40_ISA;
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isa_sex = 0;
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}
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#elif defined(CONFIG_GG2)
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if (MACH_IS_AMIGA && AMIGAHW_PRESENT(GG2_ISA)){
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isa_type = GG2_ISA;
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isa_sex = 0;
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}
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#elif defined(CONFIG_AMIGA_PCMCIA)
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if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)){
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isa_type = AG_ISA;
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isa_sex = 1;
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}
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#endif
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#endif
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}
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static int show_cpuinfo(struct seq_file *m, void *v)
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{
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const char *cpu, *mmu, *fpu;
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unsigned long clockfreq, clockfactor;
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#define LOOP_CYCLES_68020 (8)
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#define LOOP_CYCLES_68030 (8)
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#define LOOP_CYCLES_68040 (3)
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#define LOOP_CYCLES_68060 (1)
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if (CPU_IS_020) {
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cpu = "68020";
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clockfactor = LOOP_CYCLES_68020;
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} else if (CPU_IS_030) {
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cpu = "68030";
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clockfactor = LOOP_CYCLES_68030;
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} else if (CPU_IS_040) {
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cpu = "68040";
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clockfactor = LOOP_CYCLES_68040;
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} else if (CPU_IS_060) {
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cpu = "68060";
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clockfactor = LOOP_CYCLES_68060;
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} else {
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cpu = "680x0";
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clockfactor = 0;
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}
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#ifdef CONFIG_M68KFPU_EMU_ONLY
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fpu="none(soft float)";
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#else
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if (m68k_fputype & FPU_68881)
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fpu = "68881";
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else if (m68k_fputype & FPU_68882)
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fpu = "68882";
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else if (m68k_fputype & FPU_68040)
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fpu = "68040";
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else if (m68k_fputype & FPU_68060)
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fpu = "68060";
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else if (m68k_fputype & FPU_SUNFPA)
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fpu = "Sun FPA";
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else
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fpu = "none";
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#endif
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if (m68k_mmutype & MMU_68851)
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mmu = "68851";
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else if (m68k_mmutype & MMU_68030)
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mmu = "68030";
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else if (m68k_mmutype & MMU_68040)
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mmu = "68040";
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else if (m68k_mmutype & MMU_68060)
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mmu = "68060";
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else if (m68k_mmutype & MMU_SUN3)
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mmu = "Sun-3";
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else if (m68k_mmutype & MMU_APOLLO)
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mmu = "Apollo";
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else
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mmu = "unknown";
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clockfreq = loops_per_jiffy*HZ*clockfactor;
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seq_printf(m, "CPU:\t\t%s\n"
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"MMU:\t\t%s\n"
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"FPU:\t\t%s\n"
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"Clocking:\t%lu.%1luMHz\n"
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"BogoMips:\t%lu.%02lu\n"
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"Calibration:\t%lu loops\n",
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cpu, mmu, fpu,
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clockfreq/1000000,(clockfreq/100000)%10,
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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);
|
|
}
|
|
|
|
|
|
#if defined(CONFIG_AMIGA_FLOPPY) || defined(CONFIG_ATARI_FLOPPY)
|
|
void __init floppy_setup(char *str, int *ints)
|
|
{
|
|
if (mach_floppy_setup)
|
|
mach_floppy_setup (str, ints);
|
|
}
|
|
|
|
#endif
|
|
|
|
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 */
|
|
}
|