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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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![Linus Torvalds](/assets/img/avatar_default.png)
This cleans up two ancient timer features that were never completed in the past, CONFIG_GENERIC_CLOCKEVENTS and CONFIG_ARCH_USES_GETTIMEOFFSET. There was only one user left for the ARCH_USES_GETTIMEOFFSET variant of clocksource implementations, the ARM EBSA110 platform. Rather than changing to use modern timekeeping, we remove the platform entirely as Russell no longer uses his machine and nobody else seems to have one any more. The conditional code for using arch_gettimeoffset() is removed as a result. For CONFIG_GENERIC_CLOCKEVENTS, there are still a couple of platforms not using clockevent drivers: parisc, ia64, most of m68k, and one Arm platform. These all do timer ticks slighly differently, and this gets cleaned up to the point they at least all call the same helper function. Instead of most platforms using 'select GENERIC_CLOCKEVENTS' in Kconfig, the polarity is now reversed, with the few remaining ones selecting LEGACY_TIMER_TICK instead. Signed-off-by: Arnd Bergmann <arnd@arndb.de> -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEo6/YBQwIrVS28WGKmmx57+YAGNkFAl/Y1v8ACgkQmmx57+YA GNmCvQ/9EDlgCt92r8SB+LGafDtgB8TUQZeIrs9S2mByzdxwnw0lxObIXFCnhQgh RpG3dR+ONRDnC5eI149B377JOEFMZWe2+BtYHUHkFARtUEWatslQcz7yAGvVRK/l TS/qReb6piKltlzuanF1bMZbjy2OhlaDRcm+OlC3y5mALR33M4emb+rJ6cSdfk3K v1iZhrxtfQT77ztesh/oPkPiyQ6kNcz7SfpyYOb6f5VLlml2BZ7YwBSVyGY7urHk RL3XqOUP4KKlMEAI8w0E2nvft6Fk+luziBhrMYWK0GvbmI1OESENuX/c6tgT2OQ1 DRaVHvcPG/EAY8adOKxxVyHhEJDSoz5GJV/EtjlOegsJk6RomczR1uuiT3Kvm7Ah PktMKv4xQht1E15KPSKbOvNIEP18w2s5z6gw+jVDv8pw42pVEQManm1D+BICqrhl fcpw6T1drf9UxAjwX4+zXtmNs+a+mqiFG8puU4VVgT4GpQ8umHvunXz2WUjZO0jc 3m8ErJHBvtJwW5TOHGyXnjl9SkwPzHOfF6IcXTYWEDU4/gQIK9TwUvCjLc0lE27t FMCV2ds7/K1CXwRgpa5IrefSkb8yOXSbRZ56NqqF7Ekxw4J5bYRSaY7jb+qD/e+3 5O1y+iPxFrpH+16hSahvzrtcdFNbLQvBBuRtEQOYuHLt2UJrNoU= =QpNs -----END PGP SIGNATURE----- Merge tag 'asm-generic-timers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic Pull asm-generic cross-architecture timer cleanup from Arnd Bergmann: "This cleans up two ancient timer features that were never completed in the past, CONFIG_GENERIC_CLOCKEVENTS and CONFIG_ARCH_USES_GETTIMEOFFSET. There was only one user left for the ARCH_USES_GETTIMEOFFSET variant of clocksource implementations, the ARM EBSA110 platform. Rather than changing to use modern timekeeping, we remove the platform entirely as Russell no longer uses his machine and nobody else seems to have one any more. The conditional code for using arch_gettimeoffset() is removed as a result. For CONFIG_GENERIC_CLOCKEVENTS, there are still a couple of platforms not using clockevent drivers: parisc, ia64, most of m68k, and one Arm platform. These all do timer ticks slighly differently, and this gets cleaned up to the point they at least all call the same helper function. Instead of most platforms using 'select GENERIC_CLOCKEVENTS' in Kconfig, the polarity is now reversed, with the few remaining ones selecting LEGACY_TIMER_TICK instead" * tag 'asm-generic-timers-5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic: timekeeping: default GENERIC_CLOCKEVENTS to enabled timekeeping: remove xtime_update m68k: remove timer_interrupt() function m68k: change remaining timers to legacy_timer_tick m68k: m68328: use legacy_timer_tick() m68k: sun3/sun3c: use legacy_timer_tick m68k: split heartbeat out of timer function m68k: coldfire: use legacy_timer_tick() parisc: use legacy_timer_tick ARM: rpc: use legacy_timer_tick ia64: convert to legacy_timer_tick timekeeping: add CONFIG_LEGACY_TIMER_TICK timekeeping: remove arch_gettimeoffset net: remove am79c961a driver ARM: remove ebsa110 platform
624 lines
14 KiB
C
624 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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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/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/memblock.h>
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#include <linux/proc_fs.h>
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#include <linux/seq_file.h>
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#include <linux/module.h>
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#include <linux/nvram.h>
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#include <linux/initrd.h>
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#include <asm/bootinfo.h>
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#include <asm/byteorder.h>
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#include <asm/sections.h>
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#include <asm/setup.h>
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#include <asm/fpu.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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#include <asm/atarihw.h>
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#ifdef CONFIG_ATARI
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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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#include <asm/macintosh.h>
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#include <asm/natfeat.h>
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#if !FPSTATESIZE || !NR_IRQS
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#warning No CPU/platform type selected, your kernel will not work!
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#warning Are you building an allnoconfig kernel?
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#endif
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unsigned long m68k_machtype;
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EXPORT_SYMBOL(m68k_machtype);
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unsigned long m68k_cputype;
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EXPORT_SYMBOL(m68k_cputype);
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unsigned long m68k_fputype;
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unsigned long m68k_mmutype;
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EXPORT_SYMBOL(m68k_mmutype);
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#ifdef CONFIG_VME
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unsigned long vme_brdtype;
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EXPORT_SYMBOL(vme_brdtype);
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#endif
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int m68k_is040or060;
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EXPORT_SYMBOL(m68k_is040or060);
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extern unsigned long availmem;
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int m68k_num_memory;
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EXPORT_SYMBOL(m68k_num_memory);
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int m68k_realnum_memory;
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EXPORT_SYMBOL(m68k_realnum_memory);
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unsigned long m68k_memoffset;
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struct m68k_mem_info m68k_memory[NUM_MEMINFO];
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EXPORT_SYMBOL(m68k_memory);
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static struct m68k_mem_info m68k_ramdisk __initdata;
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static char m68k_command_line[CL_SIZE] __initdata;
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void (*mach_sched_init) (void) __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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void (*mach_get_model) (char *model);
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void (*mach_get_hardware_list) (struct seq_file *m);
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/* machine dependent timer functions */
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int (*mach_hwclk) (int, struct rtc_time*);
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EXPORT_SYMBOL(mach_hwclk);
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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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EXPORT_SYMBOL(mach_get_ss);
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EXPORT_SYMBOL(mach_get_rtc_pll);
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EXPORT_SYMBOL(mach_set_rtc_pll);
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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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#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_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 int apollo_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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#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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uint16_t tag;
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save_bootinfo(record);
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while ((tag = be16_to_cpu(record->tag)) != BI_LAST) {
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int unknown = 0;
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const void *data = record->data;
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uint16_t size = be16_to_cpu(record->size);
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switch (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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const struct mem_info *m = data;
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m68k_memory[m68k_num_memory].addr =
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be32_to_cpu(m->addr);
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m68k_memory[m68k_num_memory].size =
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be32_to_cpu(m->size);
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m68k_num_memory++;
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} else
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pr_warn("%s: too many memory chunks\n",
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__func__);
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break;
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case BI_RAMDISK:
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{
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const struct mem_info *m = data;
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m68k_ramdisk.addr = be32_to_cpu(m->addr);
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m68k_ramdisk.size = be32_to_cpu(m->size);
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}
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break;
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case BI_COMMAND_LINE:
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strlcpy(m68k_command_line, data,
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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 if (MACH_IS_APOLLO)
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unknown = apollo_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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pr_warn("%s: unknown tag 0x%04x ignored\n", __func__,
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tag);
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record = (struct bi_record *)((unsigned long)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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pr_warn("%s: ignoring last %i chunks of physical memory\n",
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__func__, (m68k_num_memory - 1));
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m68k_num_memory = 1;
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}
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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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/* The bootinfo is located right after the kernel */
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if (!CPU_IS_COLDFIRE)
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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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#if defined(CONFIG_FPU) && !defined(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|FPU_COLDFIRE)) {
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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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pr_warn("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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#if defined(CONFIG_BOOTPARAM)
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strncpy(m68k_command_line, CONFIG_BOOTPARAM_STRING, CL_SIZE);
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m68k_command_line[CL_SIZE - 1] = 0;
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#endif /* CONFIG_BOOTPARAM */
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process_uboot_commandline(&m68k_command_line[0], CL_SIZE);
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*cmdline_p = m68k_command_line;
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memcpy(boot_command_line, *cmdline_p, CL_SIZE);
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parse_early_param();
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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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#ifdef CONFIG_COLDFIRE
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case MACH_M54XX:
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case MACH_M5441X:
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cf_bootmem_alloc();
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cf_mmu_context_init();
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config_BSP(NULL, 0);
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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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paging_init();
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#ifdef CONFIG_NATFEAT
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nf_init();
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#endif
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#ifndef CONFIG_SUN3
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#ifdef CONFIG_BLK_DEV_INITRD
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if (m68k_ramdisk.size) {
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memblock_reserve(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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pr_info("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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/* set ISA defs early as possible */
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#if defined(CONFIG_ISA) && defined(MULTI_ISA)
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if (MACH_IS_Q40) {
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isa_type = ISA_TYPE_Q40;
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isa_sex = 0;
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}
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#ifdef CONFIG_AMIGA_PCMCIA
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if (MACH_IS_AMIGA && AMIGAHW_PRESENT(PCMCIA)) {
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isa_type = ISA_TYPE_AG;
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isa_sex = 1;
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}
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#endif
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#ifdef CONFIG_ATARI_ROM_ISA
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if (MACH_IS_ATARI) {
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isa_type = ISA_TYPE_ENEC;
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isa_sex = 0;
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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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#define LOOP_CYCLES_COLDFIRE (2)
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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 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 */
|
|
|
|
#if IS_ENABLED(CONFIG_NVRAM)
|
|
#ifdef CONFIG_MAC
|
|
static unsigned char m68k_nvram_read_byte(int addr)
|
|
{
|
|
if (MACH_IS_MAC)
|
|
return mac_pram_read_byte(addr);
|
|
return 0xff;
|
|
}
|
|
|
|
static void m68k_nvram_write_byte(unsigned char val, int addr)
|
|
{
|
|
if (MACH_IS_MAC)
|
|
mac_pram_write_byte(val, addr);
|
|
}
|
|
#endif /* CONFIG_MAC */
|
|
|
|
#ifdef CONFIG_ATARI
|
|
static ssize_t m68k_nvram_read(char *buf, size_t count, loff_t *ppos)
|
|
{
|
|
if (MACH_IS_ATARI)
|
|
return atari_nvram_read(buf, count, ppos);
|
|
else if (MACH_IS_MAC)
|
|
return nvram_read_bytes(buf, count, ppos);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static ssize_t m68k_nvram_write(char *buf, size_t count, loff_t *ppos)
|
|
{
|
|
if (MACH_IS_ATARI)
|
|
return atari_nvram_write(buf, count, ppos);
|
|
else if (MACH_IS_MAC)
|
|
return nvram_write_bytes(buf, count, ppos);
|
|
return -EINVAL;
|
|
}
|
|
|
|
static long m68k_nvram_set_checksum(void)
|
|
{
|
|
if (MACH_IS_ATARI)
|
|
return atari_nvram_set_checksum();
|
|
return -EINVAL;
|
|
}
|
|
|
|
static long m68k_nvram_initialize(void)
|
|
{
|
|
if (MACH_IS_ATARI)
|
|
return atari_nvram_initialize();
|
|
return -EINVAL;
|
|
}
|
|
#endif /* CONFIG_ATARI */
|
|
|
|
static ssize_t m68k_nvram_get_size(void)
|
|
{
|
|
if (MACH_IS_ATARI)
|
|
return atari_nvram_get_size();
|
|
else if (MACH_IS_MAC)
|
|
return mac_pram_get_size();
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* Atari device drivers call .read (to get checksum validation) whereas
|
|
* Mac and PowerMac device drivers just use .read_byte.
|
|
*/
|
|
const struct nvram_ops arch_nvram_ops = {
|
|
#ifdef CONFIG_MAC
|
|
.read_byte = m68k_nvram_read_byte,
|
|
.write_byte = m68k_nvram_write_byte,
|
|
#endif
|
|
#ifdef CONFIG_ATARI
|
|
.read = m68k_nvram_read,
|
|
.write = m68k_nvram_write,
|
|
.set_checksum = m68k_nvram_set_checksum,
|
|
.initialize = m68k_nvram_initialize,
|
|
#endif
|
|
.get_size = m68k_nvram_get_size,
|
|
};
|
|
EXPORT_SYMBOL(arch_nvram_ops);
|
|
#endif /* CONFIG_NVRAM */
|