apus_setup.c
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上传日期:2013-04-10
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文件大小:20k
- /*
- * BK Id: %F% %I% %G% %U% %#%
- */
- /*
- * arch/ppc/platforms/apus_setup.c
- *
- * Copyright (C) 1998, 1999 Jesper Skov
- *
- * Basically what is needed to replace functionality found in
- * arch/m68k allowing Amiga drivers to work under APUS.
- * Bits of code and/or ideas from arch/m68k and arch/ppc files.
- *
- * TODO:
- * This file needs a *really* good cleanup. Restructure and optimize.
- * Make sure it can be compiled for non-APUS configs. Begin to move
- * Amiga specific stuff into mach/amiga.
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/init.h>
- #include <linux/blk.h>
- #include <linux/seq_file.h>
- /* Needs INITSERIAL call in head.S! */
- #undef APUS_DEBUG
- #include <asm/bootinfo.h>
- #include <asm/setup.h>
- #include <asm/amigahw.h>
- #include <asm/amigaints.h>
- #include <asm/amigappc.h>
- #include <asm/pgtable.h>
- #include <asm/dma.h>
- #include <asm/machdep.h>
- #include <asm/hardirq.h>
- #include <asm/keyboard.h>
- #include <asm/time.h>
- unsigned long m68k_machtype;
- char debug_device[6] = "";
- extern void amiga_init_IRQ(void);
- extern int amiga_kbd_translate(unsigned char keycode, unsigned char *keycodep, char raw_mode);
- extern char amiga_sysrq_xlate[128];
- extern void apus_setup_pci_ptrs(void);
- void (*mach_sched_init) (void (*handler)(int, void *, struct pt_regs *)) __initdata = NULL;
- /* machine dependent keyboard functions */
- int (*mach_keyb_init) (void) __initdata = NULL;
- int (*mach_kbdrate) (struct kbd_repeat *) = NULL;
- void (*mach_kbd_leds) (unsigned int) = NULL;
- /* machine dependent irq functions */
- void (*mach_init_IRQ) (void) __initdata = NULL;
- void (*(*mach_default_handler)[]) (int, void *, struct pt_regs *) = NULL;
- void (*mach_get_model) (char *model) = NULL;
- int (*mach_get_hardware_list) (char *buffer) = NULL;
- int (*mach_get_irq_list) (char *) = NULL;
- void (*mach_process_int) (int, struct pt_regs *) = NULL;
- /* machine dependent timer functions */
- unsigned long (*mach_gettimeoffset) (void);
- void (*mach_gettod) (int*, int*, int*, int*, int*, int*);
- int (*mach_hwclk) (int, struct hwclk_time*) = NULL;
- int (*mach_set_clock_mmss) (unsigned long) = NULL;
- void (*mach_reset)( void );
- long mach_max_dma_address = 0x00ffffff; /* default set to the lower 16MB */
- #if defined(CONFIG_AMIGA_FLOPPY)
- void (*mach_floppy_setup) (char *, int *) __initdata = NULL;
- #endif
- #ifdef CONFIG_HEARTBEAT
- void (*mach_heartbeat) (int) = NULL;
- extern void apus_heartbeat(void);
- #endif
- extern unsigned long amiga_model;
- extern unsigned decrementer_count;/* count value for 1e6/HZ microseconds */
- extern unsigned count_period_num; /* 1 decrementer count equals */
- extern unsigned count_period_den; /* count_period_num / count_period_den us */
- int num_memory = 0;
- struct mem_info memory[NUM_MEMINFO];/* memory description */
- /* FIXME: Duplicate memory data to avoid conflicts with m68k shared code. */
- int m68k_realnum_memory = 0;
- struct mem_info m68k_memory[NUM_MEMINFO];/* memory description */
- struct mem_info ramdisk;
- extern void amiga_floppy_setup(char *, int *);
- extern void config_amiga(void);
- static int __60nsram = 0;
- /* for cpuinfo */
- static int __bus_speed = 0;
- static int __speed_test_failed = 0;
- /********************************************** COMPILE PROTECTION */
- /* Provide some stubs that links to Amiga specific functions.
- * This allows CONFIG_APUS to be removed from generic PPC files while
- * preventing link errors for other PPC targets.
- */
- unsigned long apus_get_rtc_time(void)
- {
- #ifdef CONFIG_APUS
- extern unsigned long m68k_get_rtc_time(void);
- return m68k_get_rtc_time ();
- #else
- return 0;
- #endif
- }
- int apus_set_rtc_time(unsigned long nowtime)
- {
- #ifdef CONFIG_APUS
- extern int m68k_set_rtc_time(unsigned long nowtime);
- return m68k_set_rtc_time (nowtime);
- #else
- return 0;
- #endif
- }
- /*********************************************************** SETUP */
- /* From arch/m68k/kernel/setup.c. */
- void __init apus_setup_arch(void)
- {
- #ifdef CONFIG_APUS
- extern char cmd_line[];
- int i;
- char *p, *q;
- /* Let m68k-shared code know it should do the Amiga thing. */
- m68k_machtype = MACH_AMIGA;
- /* 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 = cmd_line; p && *p; ) {
- i = 0;
- if (!strncmp( p, "debug=", 6 )) {
- strncpy( debug_device, p+6, sizeof(debug_device)-1 );
- debug_device[sizeof(debug_device)-1] = 0;
- if ((q = strchr( debug_device, ' ' ))) *q = 0;
- i = 1;
- } else if (!strncmp( p, "60nsram", 7 )) {
- APUS_WRITE (APUS_REG_WAITSTATE,
- REGWAITSTATE_SETRESET
- |REGWAITSTATE_PPCR
- |REGWAITSTATE_PPCW);
- __60nsram = 1;
- i = 1;
- }
- if (i) {
- /* option processed, delete it */
- if ((q = strchr( p, ' ' )))
- strcpy( p, q+1 );
- else
- *p = 0;
- } else {
- if ((p = strchr( p, ' ' ))) ++p;
- }
- }
- config_amiga();
- #if 0 /* Enable for logging - also include logging.o in Makefile rule */
- {
- #define LOG_SIZE 4096
- void* base;
- /* Throw away some memory - the P5 firmare stomps on top
- * of CHIP memory during bootup.
- */
- amiga_chip_alloc(0x1000);
- base = amiga_chip_alloc(LOG_SIZE+sizeof(klog_data_t));
- LOG_INIT(base, base+sizeof(klog_data_t), LOG_SIZE);
- }
- #endif
- #endif
- }
- int
- apus_show_cpuinfo(struct seq_file *m)
- {
- extern int __map_without_bats;
- extern unsigned long powerup_PCI_present;
- seq_printf(m, "machinett: Amigan");
- seq_printf(m, "bus speedt: %d%s", __bus_speed,
- (__speed_test_failed) ? " [failed]n" : "n");
- seq_printf(m, "using BATst: %sn",
- (__map_without_bats) ? "No" : "Yes");
- seq_printf(m, "ram speedt: %dnsn", (__60nsram) ? 60 : 70);
- seq_printf(m, "PCI bridget: %sn",
- (powerup_PCI_present) ? "Yes" : "No");
- return 0;
- }
- static void get_current_tb(unsigned long long *time)
- {
- __asm __volatile ("1:mftbu 4 nt"
- " mftb 5 nt"
- " mftbu 6 nt"
- " cmpw 4,6 nt"
- " bne 1b nt"
- " stw 4,0(%0)nt"
- " stw 5,4(%0)nt"
- :
- : "r" (time)
- : "r4", "r5", "r6");
- }
- void apus_calibrate_decr(void)
- {
- #ifdef CONFIG_APUS
- unsigned long freq;
- /* This algorithm for determining the bus speed was
- contributed by Ralph Schmidt. */
- unsigned long long start, stop;
- int bus_speed;
- int speed_test_failed = 0;
- {
- unsigned long loop = amiga_eclock / 10;
- get_current_tb (&start);
- while (loop--) {
- unsigned char tmp;
- tmp = ciaa.pra;
- }
- get_current_tb (&stop);
- }
- bus_speed = (((unsigned long)(stop-start))*10*4) / 1000000;
- if (AMI_1200 == amiga_model)
- bus_speed /= 2;
- if ((bus_speed >= 47) && (bus_speed < 53)) {
- bus_speed = 50;
- freq = 12500000;
- } else if ((bus_speed >= 57) && (bus_speed < 63)) {
- bus_speed = 60;
- freq = 15000000;
- } else if ((bus_speed >= 63) && (bus_speed < 69)) {
- bus_speed = 67;
- freq = 16666667;
- } else {
- printk ("APUS: Unable to determine bus speed (%d). "
- "Defaulting to 50MHz", bus_speed);
- bus_speed = 50;
- freq = 12500000;
- speed_test_failed = 1;
- }
- /* Ease diagnostics... */
- {
- extern int __map_without_bats;
- extern unsigned long powerup_PCI_present;
- printk ("APUS: BATs=%d, BUS=%dMHz",
- (__map_without_bats) ? 0 : 1,
- bus_speed);
- if (speed_test_failed)
- printk ("[FAILED - please report]");
- printk (", RAM=%dns, PCI bridge=%dn",
- (__60nsram) ? 60 : 70,
- (powerup_PCI_present) ? 1 : 0);
- /* print a bit more if asked politely... */
- if (!(ciaa.pra & 0x40)){
- extern unsigned int bat_addrs[4][3];
- int b;
- for (b = 0; b < 4; ++b) {
- printk ("APUS: BAT%d ", b);
- printk ("%08x-%08x -> %08xn",
- bat_addrs[b][0],
- bat_addrs[b][1],
- bat_addrs[b][2]);
- }
- }
- }
- printk("time_init: decrementer frequency = %lu.%.6lu MHzn",
- freq/1000000, freq%1000000);
- tb_ticks_per_jiffy = freq / HZ;
- tb_to_us = mulhwu_scale_factor(freq, 1000000);
- __bus_speed = bus_speed;
- __speed_test_failed = speed_test_failed;
- #endif
- }
- void arch_gettod(int *year, int *mon, int *day, int *hour,
- int *min, int *sec)
- {
- #ifdef CONFIG_APUS
- if (mach_gettod)
- mach_gettod(year, mon, day, hour, min, sec);
- else
- *year = *mon = *day = *hour = *min = *sec = 0;
- #endif
- }
- /* for "kbd-reset" cmdline param */
- __init
- void kbd_reset_setup(char *str, int *ints)
- {
- }
- /*********************************************************** FLOPPY */
- #if defined(CONFIG_AMIGA_FLOPPY)
- __init
- void floppy_setup(char *str, int *ints)
- {
- if (mach_floppy_setup)
- mach_floppy_setup (str, ints);
- }
- #endif
- /*********************************************************** MEMORY */
- #define KMAP_MAX 32
- unsigned long kmap_chunks[KMAP_MAX*3];
- int kmap_chunk_count = 0;
- /* From pgtable.h */
- static __inline__ pte_t *my_find_pte(struct mm_struct *mm,unsigned long va)
- {
- pgd_t *dir = 0;
- pmd_t *pmd = 0;
- pte_t *pte = 0;
- va &= PAGE_MASK;
- dir = pgd_offset( mm, va );
- if (dir)
- {
- pmd = pmd_offset(dir, va & PAGE_MASK);
- if (pmd && pmd_present(*pmd))
- {
- pte = pte_offset(pmd, va);
- }
- }
- return pte;
- }
- /* Again simulating an m68k/mm/kmap.c function. */
- void kernel_set_cachemode( unsigned long address, unsigned long size,
- unsigned int cmode )
- {
- unsigned long mask, flags;
- switch (cmode)
- {
- case IOMAP_FULL_CACHING:
- mask = ~(_PAGE_NO_CACHE | _PAGE_GUARDED);
- flags = 0;
- break;
- case IOMAP_NOCACHE_SER:
- mask = ~0;
- flags = (_PAGE_NO_CACHE | _PAGE_GUARDED);
- break;
- default:
- panic ("kernel_set_cachemode() doesn't support mode %dn",
- cmode);
- break;
- }
- size /= PAGE_SIZE;
- address &= PAGE_MASK;
- while (size--)
- {
- pte_t *pte;
- pte = my_find_pte(&init_mm, address);
- if ( !pte )
- {
- printk("pte NULL in kernel_set_cachemode()n");
- return;
- }
- pte_val (*pte) &= mask;
- pte_val (*pte) |= flags;
- flush_tlb_page(find_vma(&init_mm,address),address);
- address += PAGE_SIZE;
- }
- }
- unsigned long mm_ptov (unsigned long paddr)
- {
- unsigned long ret;
- if (paddr < 16*1024*1024)
- ret = ZTWO_VADDR(paddr);
- else {
- int i;
- for (i = 0; i < kmap_chunk_count;){
- unsigned long phys = kmap_chunks[i++];
- unsigned long size = kmap_chunks[i++];
- unsigned long virt = kmap_chunks[i++];
- if (paddr >= phys
- && paddr < (phys + size)){
- ret = virt + paddr - phys;
- goto exit;
- }
- }
- ret = (unsigned long) __va(paddr);
- }
- exit:
- #ifdef DEBUGPV
- printk ("PTOV(%lx)=%lxn", paddr, ret);
- #endif
- return ret;
- }
- int mm_end_of_chunk (unsigned long addr, int len)
- {
- if (memory[0].addr + memory[0].size == addr + len)
- return 1;
- return 0;
- }
- /*********************************************************** CACHE */
- #define L1_CACHE_BYTES 32
- #define MAX_CACHE_SIZE 8192
- void cache_push(__u32 addr, int length)
- {
- addr = mm_ptov(addr);
- if (MAX_CACHE_SIZE < length)
- length = MAX_CACHE_SIZE;
- while(length > 0){
- __asm ("dcbf 0,%0nt"
- : : "r" (addr));
- addr += L1_CACHE_BYTES;
- length -= L1_CACHE_BYTES;
- }
- /* Also flush trailing block */
- __asm ("dcbf 0,%0nt"
- "sync nt"
- : : "r" (addr));
- }
- void cache_clear(__u32 addr, int length)
- {
- if (MAX_CACHE_SIZE < length)
- length = MAX_CACHE_SIZE;
- addr = mm_ptov(addr);
- __asm ("dcbf 0,%0nt"
- "sync nt"
- "icbi 0,%0 nt"
- "isync nt"
- : : "r" (addr));
- addr += L1_CACHE_BYTES;
- length -= L1_CACHE_BYTES;
- while(length > 0){
- __asm ("dcbf 0,%0nt"
- "sync nt"
- "icbi 0,%0 nt"
- "isync nt"
- : : "r" (addr));
- addr += L1_CACHE_BYTES;
- length -= L1_CACHE_BYTES;
- }
- __asm ("dcbf 0,%0nt"
- "sync nt"
- "icbi 0,%0 nt"
- "isync nt"
- : : "r" (addr));
- }
- /****************************************************** from setup.c */
- void
- apus_restart(char *cmd)
- {
- cli();
- APUS_WRITE(APUS_REG_LOCK,
- REGLOCK_BLACKMAGICK1|REGLOCK_BLACKMAGICK2);
- APUS_WRITE(APUS_REG_LOCK,
- REGLOCK_BLACKMAGICK1|REGLOCK_BLACKMAGICK3);
- APUS_WRITE(APUS_REG_LOCK,
- REGLOCK_BLACKMAGICK2|REGLOCK_BLACKMAGICK3);
- APUS_WRITE(APUS_REG_SHADOW, REGSHADOW_SELFRESET);
- APUS_WRITE(APUS_REG_RESET, REGRESET_AMIGARESET);
- for(;;);
- }
- void
- apus_power_off(void)
- {
- for (;;);
- }
- void
- apus_halt(void)
- {
- apus_restart(NULL);
- }
- /****************************************************** IRQ stuff */
- static unsigned char last_ipl[8];
- int apus_get_irq(struct pt_regs* regs)
- {
- unsigned char ipl_emu, mask;
- unsigned int level;
- APUS_READ(APUS_IPL_EMU, ipl_emu);
- level = (ipl_emu >> 3) & IPLEMU_IPLMASK;
- mask = IPLEMU_SETRESET|IPLEMU_DISABLEINT|level;
- level ^= 7;
- /* Save previous IPL value */
- if (last_ipl[level])
- return -2;
- last_ipl[level] = ipl_emu;
- /* Set to current IPL value */
- APUS_WRITE(APUS_IPL_EMU, mask);
- APUS_WRITE(APUS_IPL_EMU, IPLEMU_DISABLEINT|level);
- #ifdef __INTERRUPT_DEBUG
- printk("<%d:%d>", level, ~ipl_emu & IPLEMU_IPLMASK);
- #endif
- return level + IRQ_AMIGA_AUTO;
- }
- void apus_end_irq(unsigned int irq)
- {
- unsigned char ipl_emu;
- unsigned int level = irq - IRQ_AMIGA_AUTO;
- #ifdef __INTERRUPT_DEBUG
- printk("{%d}", ~last_ipl[level] & IPLEMU_IPLMASK);
- #endif
- /* Restore IPL to the previous value */
- ipl_emu = last_ipl[level] & IPLEMU_IPLMASK;
- APUS_WRITE(APUS_IPL_EMU, IPLEMU_SETRESET|IPLEMU_DISABLEINT|ipl_emu);
- last_ipl[level] = 0;
- ipl_emu ^= 7;
- APUS_WRITE(APUS_IPL_EMU, IPLEMU_DISABLEINT|ipl_emu);
- }
- /****************************************************** keyboard */
- static int apus_kbd_setkeycode(unsigned int scancode, unsigned int keycode)
- {
- return -EOPNOTSUPP;
- }
- static int apus_kbd_getkeycode(unsigned int scancode)
- {
- return scancode > 127 ? -EINVAL : scancode;
- }
- static char apus_kbd_unexpected_up(unsigned char keycode)
- {
- return 0200;
- }
- static void apus_kbd_init_hw(void)
- {
- #ifdef CONFIG_APUS
- extern int amiga_keyb_init(void);
- amiga_keyb_init();
- #endif
- }
- /****************************************************** debugging */
- /* some serial hardware definitions */
- #define SDR_OVRUN (1<<15)
- #define SDR_RBF (1<<14)
- #define SDR_TBE (1<<13)
- #define SDR_TSRE (1<<12)
- #define AC_SETCLR (1<<15)
- #define AC_UARTBRK (1<<11)
- #define SER_DTR (1<<7)
- #define SER_RTS (1<<6)
- #define SER_DCD (1<<5)
- #define SER_CTS (1<<4)
- #define SER_DSR (1<<3)
- static __inline__ void ser_RTSon(void)
- {
- ciab.pra &= ~SER_RTS; /* active low */
- }
- int __debug_ser_out( unsigned char c )
- {
- custom.serdat = c | 0x100;
- mb();
- while (!(custom.serdatr & 0x2000))
- barrier();
- return 1;
- }
- unsigned char __debug_ser_in( void )
- {
- unsigned char c;
- /* XXX: is that ok?? derived from amiga_ser.c... */
- while( !(custom.intreqr & IF_RBF) )
- barrier();
- c = custom.serdatr;
- /* clear the interrupt, so that another character can be read */
- custom.intreq = IF_RBF;
- return c;
- }
- int __debug_serinit( void )
- {
- unsigned long flags;
- save_flags (flags);
- cli();
- /* turn off Rx and Tx interrupts */
- custom.intena = IF_RBF | IF_TBE;
- /* clear any pending interrupt */
- custom.intreq = IF_RBF | IF_TBE;
- restore_flags (flags);
- /*
- * set the appropriate directions for the modem control flags,
- * and clear RTS and DTR
- */
- ciab.ddra |= (SER_DTR | SER_RTS); /* outputs */
- ciab.ddra &= ~(SER_DCD | SER_CTS | SER_DSR); /* inputs */
- #ifdef CONFIG_KGDB
- /* turn Rx interrupts on for GDB */
- custom.intena = IF_SETCLR | IF_RBF;
- ser_RTSon();
- #endif
- return 0;
- }
- void __debug_print_hex(unsigned long x)
- {
- int i;
- char hexchars[] = "0123456789ABCDEF";
- for (i = 0; i < 8; i++) {
- __debug_ser_out(hexchars[(x >> 28) & 15]);
- x <<= 4;
- }
- __debug_ser_out('n');
- __debug_ser_out('r');
- }
- void __debug_print_string(char* s)
- {
- unsigned char c;
- while((c = *s++))
- __debug_ser_out(c);
- __debug_ser_out('n');
- __debug_ser_out('r');
- }
- static void apus_progress(char *s, unsigned short value)
- {
- __debug_print_string(s);
- }
- /****************************************************** init */
- /* The number of spurious interrupts */
- volatile unsigned int num_spurious;
- extern struct irqaction amiga_sys_irqaction[AUTO_IRQS];
- extern void amiga_enable_irq(unsigned int irq);
- extern void amiga_disable_irq(unsigned int irq);
- struct hw_interrupt_type amiga_sys_irqctrl = {
- typename: "Amiga IPL",
- end: apus_end_irq,
- };
- struct hw_interrupt_type amiga_irqctrl = {
- typename: "Amiga ",
- enable: amiga_enable_irq,
- disable: amiga_disable_irq,
- };
- #define HARDWARE_MAPPED_SIZE (512*1024)
- unsigned long __init apus_find_end_of_memory(void)
- {
- int shadow = 0;
- unsigned long total;
- /* The memory size reported by ADOS excludes the 512KB
- reserved for PPC exception registers and possibly 512KB
- containing a shadow of the ADOS ROM. */
- {
- unsigned long size = memory[0].size;
- /* If 2MB aligned, size was probably user
- specified. We can't tell anything about shadowing
- in this case so skip shadow assignment. */
- if (0 != (size & 0x1fffff)){
- /* Align to 512KB to ensure correct handling
- of both memfile and system specified
- sizes. */
- size = ((size+0x0007ffff) & 0xfff80000);
- /* If memory is 1MB aligned, assume
- shadowing. */
- shadow = !(size & 0x80000);
- }
- /* Add the chunk that ADOS does not see. by aligning
- the size to the nearest 2MB limit upwards. */
- memory[0].size = ((size+0x001fffff) & 0xffe00000);
- }
- total = memory[0].size;
- /* Remove the memory chunks that are controlled by special
- Phase5 hardware. */
- /* Remove the upper 512KB if it contains a shadow of
- the ADOS ROM. FIXME: It might be possible to
- disable this shadow HW. Check the booter
- (ppc_boot.c) */
- if (shadow)
- total -= HARDWARE_MAPPED_SIZE;
- /* Remove the upper 512KB where the PPC exception
- vectors are mapped. */
- total -= HARDWARE_MAPPED_SIZE;
- /* Linux/APUS only handles one block of memory -- the one on
- the PowerUP board. Other system memory is horrible slow in
- comparison. The user can use other memory for swapping
- using the z2ram device. */
- ram_phys_base = memory[0].addr;
- return total;
- }
- static void __init
- apus_map_io(void)
- {
- /* Map PPC exception vectors. */
- io_block_mapping(0xfff00000, 0xfff00000, 0x00020000, _PAGE_KERNEL);
- /* Map chip and ZorroII memory */
- io_block_mapping(zTwoBase, 0x00000000, 0x01000000, _PAGE_IO);
- }
- __init
- void apus_init_IRQ(void)
- {
- struct irqaction *action;
- int i;
- #ifdef CONFIG_PCI
- apus_setup_pci_ptrs();
- #endif
- for ( i = 0 ; i < AMI_IRQS; i++ ) {
- irq_desc[i].status = IRQ_LEVEL;
- if (i < IRQ_AMIGA_AUTO) {
- irq_desc[i].handler = &amiga_irqctrl;
- } else {
- irq_desc[i].handler = &amiga_sys_irqctrl;
- action = &amiga_sys_irqaction[i-IRQ_AMIGA_AUTO];
- if (action->name)
- setup_irq(i, action);
- }
- }
- amiga_init_IRQ();
- }
- __init
- void platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
- unsigned long r6, unsigned long r7)
- {
- extern int parse_bootinfo(const struct bi_record *);
- extern char _end[];
- /* Parse bootinfo. The bootinfo is located right after
- the kernel bss */
- parse_bootinfo((const struct bi_record *)&_end);
- #ifdef CONFIG_BLK_DEV_INITRD
- /* Take care of initrd if we have one. Use data from
- bootinfo to avoid the need to initialize PPC
- registers when kernel is booted via a PPC reset. */
- if ( ramdisk.addr ) {
- initrd_start = (unsigned long) __va(ramdisk.addr);
- initrd_end = (unsigned long)
- __va(ramdisk.size + ramdisk.addr);
- }
- #endif /* CONFIG_BLK_DEV_INITRD */
- ISA_DMA_THRESHOLD = 0x00ffffff;
- ppc_md.setup_arch = apus_setup_arch;
- ppc_md.show_cpuinfo = apus_show_cpuinfo;
- ppc_md.init_IRQ = apus_init_IRQ;
- ppc_md.get_irq = apus_get_irq;
- #ifdef CONFIG_HEARTBEAT
- ppc_md.heartbeat = apus_heartbeat;
- heartbeat_reset(0) = 1; /* assume UP for now */
- heartbeat_count(0) = 1;
- #endif
- #ifdef APUS_DEBUG
- __debug_serinit();
- ppc_md.progress = apus_progress;
- #endif
- ppc_md.init = NULL;
- ppc_md.restart = apus_restart;
- ppc_md.power_off = apus_power_off;
- ppc_md.halt = apus_halt;
- ppc_md.time_init = NULL;
- ppc_md.set_rtc_time = apus_set_rtc_time;
- ppc_md.get_rtc_time = apus_get_rtc_time;
- ppc_md.calibrate_decr = apus_calibrate_decr;
- ppc_md.find_end_of_memory = apus_find_end_of_memory;
- ppc_md.setup_io_mappings = apus_map_io;
- /* These should not be used for the APUS yet, since it uses
- the M68K keyboard now. */
- ppc_md.kbd_setkeycode = apus_kbd_setkeycode;
- ppc_md.kbd_getkeycode = apus_kbd_getkeycode;
- ppc_md.kbd_translate = amiga_kbd_translate;
- ppc_md.kbd_unexpected_up = apus_kbd_unexpected_up;
- ppc_md.kbd_init_hw = apus_kbd_init_hw;
- #ifdef CONFIG_SYSRQ
- ppc_md.ppc_kbd_sysrq_xlate = amiga_sysrq_xlate;
- SYSRQ_KEY = 0xff;
- #endif
- }