| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Greg Ungerer | 2100 | 94.47% | 10 | 47.62% |
| Geert Uytterhoeven | 95 | 4.27% | 7 | 33.33% |
| Michael Schmitz | 19 | 0.85% | 1 | 4.76% |
| Mike Rapoport | 6 | 0.27% | 1 | 4.76% |
| Christoph Hellwig | 2 | 0.09% | 1 | 4.76% |
| Greg Kroah-Hartman | 1 | 0.04% | 1 | 4.76% |
| Total | 2223 | 21 |
// SPDX-License-Identifier: GPL-2.0 /* * 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/memblock.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> #include <linux/module.h> #include <linux/initrd.h> #include <asm/bootinfo.h> #include <asm/byteorder.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/fpu.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 #include <asm/natfeat.h> #if !FPSTATESIZE || !NR_IRQS #warning No CPU/platform type selected, your kernel will not work! #warning Are you building an allnoconfig kernel? #endif unsigned long m68k_machtype; EXPORT_SYMBOL(m68k_machtype); unsigned long m68k_cputype; EXPORT_SYMBOL(m68k_cputype); unsigned long m68k_fputype; unsigned long m68k_mmutype; EXPORT_SYMBOL(m68k_mmutype); #ifdef CONFIG_VME unsigned long vme_brdtype; EXPORT_SYMBOL(vme_brdtype); #endif int m68k_is040or060; EXPORT_SYMBOL(m68k_is040or060); extern unsigned long availmem; int m68k_num_memory; EXPORT_SYMBOL(m68k_num_memory); int m68k_realnum_memory; EXPORT_SYMBOL(m68k_realnum_memory); unsigned long m68k_memoffset; struct m68k_mem_info m68k_memory[NUM_MEMINFO]; EXPORT_SYMBOL(m68k_memory); static struct m68k_mem_info m68k_ramdisk __initdata; static char m68k_command_line[CL_SIZE] __initdata; 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); void (*mach_get_hardware_list) (struct seq_file *m); /* machine dependent timer functions */ int (*mach_hwclk) (int, struct rtc_time*); EXPORT_SYMBOL(mach_hwclk); unsigned int (*mach_get_ss)(void); int (*mach_get_rtc_pll)(struct rtc_pll_info *); int (*mach_set_rtc_pll)(struct rtc_pll_info *); EXPORT_SYMBOL(mach_get_ss); EXPORT_SYMBOL(mach_get_rtc_pll); EXPORT_SYMBOL(mach_set_rtc_pll); 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_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 int apollo_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); #define MASK_256K 0xfffc0000 extern void paging_init(void); static void __init m68k_parse_bootinfo(const struct bi_record *record) { uint16_t tag; save_bootinfo(record); while ((tag = be16_to_cpu(record->tag)) != BI_LAST) { int unknown = 0; const void *data = record->data; uint16_t size = be16_to_cpu(record->size); switch (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) { const struct mem_info *m = data; m68k_memory[m68k_num_memory].addr = be32_to_cpu(m->addr); m68k_memory[m68k_num_memory].size = be32_to_cpu(m->size); m68k_num_memory++; } else pr_warn("%s: too many memory chunks\n", __func__); break; case BI_RAMDISK: { const struct mem_info *m = data; m68k_ramdisk.addr = be32_to_cpu(m->addr); m68k_ramdisk.size = be32_to_cpu(m->size); } break; case BI_COMMAND_LINE: strlcpy(m68k_command_line, 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 if (MACH_IS_APOLLO) unknown = apollo_parse_bootinfo(record); else unknown = 1; } if (unknown) pr_warn("%s: unknown tag 0x%04x ignored\n", __func__, tag); record = (struct bi_record *)((unsigned long)record + size); } m68k_realnum_memory = m68k_num_memory; #ifdef CONFIG_SINGLE_MEMORY_CHUNK if (m68k_num_memory > 1) { pr_warn("%s: ignoring last %i chunks of physical memory\n", __func__, (m68k_num_memory - 1)); m68k_num_memory = 1; } #endif } void __init setup_arch(char **cmdline_p) { /* The bootinfo is located right after the kernel */ if (!CPU_IS_COLDFIRE) 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] */ #if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU_ONLY) /* clear the fpu if we have one */ if (m68k_fputype & (FPU_68881|FPU_68882|FPU_68040|FPU_68060|FPU_COLDFIRE)) { 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) { pr_warn("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; #if defined(CONFIG_BOOTPARAM) strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE); m68k_command_line[CL_SIZE - 1] = 0; #endif /* CONFIG_BOOTPARAM */ process_uboot_commandline(&m68k_command_line[0], CL_SIZE); *cmdline_p = m68k_command_line; memcpy(boot_command_line, *cmdline_p, CL_SIZE); parse_early_param(); #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 #ifdef CONFIG_COLDFIRE case MACH_M54XX: case MACH_M5441X: cf_bootmem_alloc(); cf_mmu_context_init(); config_BSP(NULL, 0); break; #endif default: panic("No configuration setup"); } paging_init(); #ifdef CONFIG_NATFEAT nf_init(); #endif #ifndef CONFIG_SUN3 #ifdef CONFIG_BLK_DEV_INITRD if (m68k_ramdisk.size) { memblock_reserve(m68k_ramdisk.addr, m68k_ramdisk.size); initrd_start = (unsigned long)phys_to_virt(m68k_ramdisk.addr); initrd_end = initrd_start + m68k_ramdisk.size; pr_info("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 */ /* set ISA defs early as possible */ #if defined(CONFIG_ISA) && defined(MULTI_ISA) if (MACH_IS_Q40) { isa_type = ISA_TYPE_Q40; isa_sex = 0; } #ifdef CONFIG_AMIGA_PCMCIA if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) { isa_type = ISA_TYPE_AG; isa_sex = 1; } #endif #ifdef CONFIG_ATARI_ROM_ISA if (MACH_IS_ATARI) { isa_type = ISA_TYPE_ENEC; isa_sex = 0; } #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) #define LOOP_CYCLES_COLDFIRE (2) 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 if (CPU_IS_COLDFIRE) { cpu = "ColdFire"; clockfactor = LOOP_CYCLES_COLDFIRE; } 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 if (m68k_fputype & FPU_COLDFIRE) fpu = "ColdFire"; 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 if (m68k_mmutype & MMU_COLDFIRE) mmu = "ColdFire"; 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) { } const struct seq_operations cpuinfo_op = { .start = c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo, }; #ifdef CONFIG_PROC_HARDWARE static int hardware_proc_show(struct seq_file *m, void *v) { char model[80]; unsigned long mem; int i; if (mach_get_model) mach_get_model(model); else strcpy(model, "Unknown m68k"); seq_printf(m, "Model:\t\t%s\n", model); for (mem = 0, i = 0; i < m68k_num_memory; i++) mem += m68k_memory[i].size; seq_printf(m, "System Memory:\t%ldK\n", mem >> 10); if (mach_get_hardware_list) mach_get_hardware_list(m); return 0; } static int __init proc_hardware_init(void) { proc_create_single("hardware", 0, NULL, hardware_proc_show); return 0; } module_init(proc_hardware_init); #endif void check_bugs(void) { #if defined(CONFIG_FPU) && !defined(CONFIG_M68KFPU_EMU) if (m68k_fputype == 0) { pr_emerg("*** YOU DO NOT HAVE A FLOATING POINT UNIT, " "WHICH IS REQUIRED BY LINUX/M68K ***\n"); pr_emerg("Upgrade your hardware or join the FPU " "emulation project\n"); panic("no FPU"); } #endif /* !CONFIG_M68KFPU_EMU */ } #ifdef CONFIG_ADB static int __init adb_probe_sync_enable (char *str) { extern int __adb_probe_sync; __adb_probe_sync = 1; return 1; } __setup("adb_sync", adb_probe_sync_enable); #endif /* CONFIG_ADB */
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