11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * linux/arch/m68k/atari/config.c 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Copyright (C) 1994 Bjoern Brauel 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * 5/2/94 Roman Hodek: 71da177e4SLinus Torvalds * Added setting of time_adj to get a better clock. 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * 5/14/94 Roman Hodek: 101da177e4SLinus Torvalds * gettod() for TT 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * 5/15/94 Roman Hodek: 131da177e4SLinus Torvalds * hard_reset_now() for Atari (and others?) 141da177e4SLinus Torvalds * 151da177e4SLinus Torvalds * 94/12/30 Andreas Schwab: 161da177e4SLinus Torvalds * atari_sched_init fixed to get precise clock. 171da177e4SLinus Torvalds * 181da177e4SLinus Torvalds * This file is subject to the terms and conditions of the GNU General Public 191da177e4SLinus Torvalds * License. See the file COPYING in the main directory of this archive 201da177e4SLinus Torvalds * for more details. 211da177e4SLinus Torvalds */ 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds /* 241da177e4SLinus Torvalds * Miscellaneous atari stuff 251da177e4SLinus Torvalds */ 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds #include <linux/types.h> 281da177e4SLinus Torvalds #include <linux/mm.h> 29813dcf7aSAlexey Dobriyan #include <linux/seq_file.h> 301da177e4SLinus Torvalds #include <linux/console.h> 311da177e4SLinus Torvalds #include <linux/init.h> 321da177e4SLinus Torvalds #include <linux/delay.h> 331da177e4SLinus Torvalds #include <linux/ioport.h> 34736b24dbSMichael Schmitz #include <linux/platform_device.h> 351da177e4SLinus Torvalds #include <linux/vt_kern.h> 36a3b2004aSAdrian Bunk #include <linux/module.h> 371da177e4SLinus Torvalds 381da177e4SLinus Torvalds #include <asm/bootinfo.h> 391da177e4SLinus Torvalds #include <asm/setup.h> 401da177e4SLinus Torvalds #include <asm/atarihw.h> 411da177e4SLinus Torvalds #include <asm/atariints.h> 421da177e4SLinus Torvalds #include <asm/atari_stram.h> 431da177e4SLinus Torvalds #include <asm/machdep.h> 441da177e4SLinus Torvalds #include <asm/hwtest.h> 451da177e4SLinus Torvalds #include <asm/io.h> 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds u_long atari_mch_cookie; 48a3b2004aSAdrian Bunk EXPORT_SYMBOL(atari_mch_cookie); 49a3b2004aSAdrian Bunk 501da177e4SLinus Torvalds u_long atari_mch_type; 51a3b2004aSAdrian Bunk EXPORT_SYMBOL(atari_mch_type); 52a3b2004aSAdrian Bunk 531da177e4SLinus Torvalds struct atari_hw_present atari_hw_present; 54a3b2004aSAdrian Bunk EXPORT_SYMBOL(atari_hw_present); 55a3b2004aSAdrian Bunk 561da177e4SLinus Torvalds u_long atari_switches; 57a3b2004aSAdrian Bunk EXPORT_SYMBOL(atari_switches); 58a3b2004aSAdrian Bunk 591da177e4SLinus Torvalds int atari_dont_touch_floppy_select; 60a3b2004aSAdrian Bunk EXPORT_SYMBOL(atari_dont_touch_floppy_select); 61a3b2004aSAdrian Bunk 621da177e4SLinus Torvalds int atari_rtc_year_offset; 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds /* local function prototypes */ 651da177e4SLinus Torvalds static void atari_reset(void); 661da177e4SLinus Torvalds static void atari_get_model(char *model); 67813dcf7aSAlexey Dobriyan static void atari_get_hardware_list(struct seq_file *m); 681da177e4SLinus Torvalds 691da177e4SLinus Torvalds /* atari specific irq functions */ 701da177e4SLinus Torvalds extern void atari_init_IRQ (void); 711da177e4SLinus Torvalds extern void atari_mksound(unsigned int count, unsigned int ticks); 721da177e4SLinus Torvalds #ifdef CONFIG_HEARTBEAT 731da177e4SLinus Torvalds static void atari_heartbeat(int on); 741da177e4SLinus Torvalds #endif 751da177e4SLinus Torvalds 761da177e4SLinus Torvalds /* atari specific timer functions (in time.c) */ 7740220c1aSDavid Howells extern void atari_sched_init(irq_handler_t); 78c8d5ba18SStephen Warren extern u32 atari_gettimeoffset(void); 791da177e4SLinus Torvalds extern int atari_mste_hwclk (int, struct rtc_time *); 801da177e4SLinus Torvalds extern int atari_tt_hwclk (int, struct rtc_time *); 811da177e4SLinus Torvalds extern int atari_mste_set_clock_mmss (unsigned long); 821da177e4SLinus Torvalds extern int atari_tt_set_clock_mmss (unsigned long); 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds /* ++roman: This is a more elaborate test for an SCC chip, since the plain 861da177e4SLinus Torvalds * Medusa board generates DTACK at the SCC's standard addresses, but a SCC 871da177e4SLinus Torvalds * board in the Medusa is possible. Also, the addresses where the ST_ESCC 881da177e4SLinus Torvalds * resides generate DTACK without the chip, too. 891da177e4SLinus Torvalds * The method is to write values into the interrupt vector register, that 901da177e4SLinus Torvalds * should be readable without trouble (from channel A!). 911da177e4SLinus Torvalds */ 921da177e4SLinus Torvalds 931da177e4SLinus Torvalds static int __init scc_test(volatile char *ctla) 941da177e4SLinus Torvalds { 951da177e4SLinus Torvalds if (!hwreg_present(ctla)) 966ff5801aSRoman Zippel return 0; 971da177e4SLinus Torvalds MFPDELAY(); 981da177e4SLinus Torvalds 996ff5801aSRoman Zippel *ctla = 2; 1006ff5801aSRoman Zippel MFPDELAY(); 1016ff5801aSRoman Zippel *ctla = 0x40; 1021da177e4SLinus Torvalds MFPDELAY(); 1031da177e4SLinus Torvalds 1046ff5801aSRoman Zippel *ctla = 2; 1056ff5801aSRoman Zippel MFPDELAY(); 1066ff5801aSRoman Zippel if (*ctla != 0x40) 1076ff5801aSRoman Zippel return 0; 1086ff5801aSRoman Zippel MFPDELAY(); 1091da177e4SLinus Torvalds 1106ff5801aSRoman Zippel *ctla = 2; 1116ff5801aSRoman Zippel MFPDELAY(); 1126ff5801aSRoman Zippel *ctla = 0x60; 1136ff5801aSRoman Zippel MFPDELAY(); 1141da177e4SLinus Torvalds 1156ff5801aSRoman Zippel *ctla = 2; 1166ff5801aSRoman Zippel MFPDELAY(); 1176ff5801aSRoman Zippel if (*ctla != 0x60) 1186ff5801aSRoman Zippel return 0; 1196ff5801aSRoman Zippel 1206ff5801aSRoman Zippel return 1; 1211da177e4SLinus Torvalds } 1221da177e4SLinus Torvalds 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds /* 1251da177e4SLinus Torvalds * Parse an Atari-specific record in the bootinfo 1261da177e4SLinus Torvalds */ 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds int __init atari_parse_bootinfo(const struct bi_record *record) 1291da177e4SLinus Torvalds { 1301da177e4SLinus Torvalds int unknown = 0; 1311da177e4SLinus Torvalds const u_long *data = record->data; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds switch (record->tag) { 1341da177e4SLinus Torvalds case BI_ATARI_MCH_COOKIE: 1351da177e4SLinus Torvalds atari_mch_cookie = *data; 1361da177e4SLinus Torvalds break; 1371da177e4SLinus Torvalds case BI_ATARI_MCH_TYPE: 1381da177e4SLinus Torvalds atari_mch_type = *data; 1391da177e4SLinus Torvalds break; 1401da177e4SLinus Torvalds default: 1411da177e4SLinus Torvalds unknown = 1; 1426ff5801aSRoman Zippel break; 1431da177e4SLinus Torvalds } 1446ff5801aSRoman Zippel return unknown; 1451da177e4SLinus Torvalds } 1461da177e4SLinus Torvalds 1471da177e4SLinus Torvalds 1481da177e4SLinus Torvalds /* Parse the Atari-specific switches= option. */ 149d6713b40SRoman Zippel static int __init atari_switches_setup(char *str) 1501da177e4SLinus Torvalds { 151d6713b40SRoman Zippel char switches[strlen(str) + 1]; 1521da177e4SLinus Torvalds char *p; 1531da177e4SLinus Torvalds int ovsc_shift; 1541da177e4SLinus Torvalds char *args = switches; 1551da177e4SLinus Torvalds 156d6713b40SRoman Zippel if (!MACH_IS_ATARI) 157d6713b40SRoman Zippel return 0; 158d6713b40SRoman Zippel 1591da177e4SLinus Torvalds /* copy string to local array, strsep works destructively... */ 160d6713b40SRoman Zippel strcpy(switches, str); 1611da177e4SLinus Torvalds atari_switches = 0; 1621da177e4SLinus Torvalds 1631da177e4SLinus Torvalds /* parse the options */ 1641da177e4SLinus Torvalds while ((p = strsep(&args, ",")) != NULL) { 1656ff5801aSRoman Zippel if (!*p) 1666ff5801aSRoman Zippel continue; 1671da177e4SLinus Torvalds ovsc_shift = 0; 1681da177e4SLinus Torvalds if (strncmp(p, "ov_", 3) == 0) { 1691da177e4SLinus Torvalds p += 3; 1701da177e4SLinus Torvalds ovsc_shift = ATARI_SWITCH_OVSC_SHIFT; 1711da177e4SLinus Torvalds } 1721da177e4SLinus Torvalds 1731da177e4SLinus Torvalds if (strcmp(p, "ikbd") == 0) { 1741da177e4SLinus Torvalds /* RTS line of IKBD ACIA */ 1751da177e4SLinus Torvalds atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift; 1766ff5801aSRoman Zippel } else if (strcmp(p, "midi") == 0) { 1771da177e4SLinus Torvalds /* RTS line of MIDI ACIA */ 1781da177e4SLinus Torvalds atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift; 1796ff5801aSRoman Zippel } else if (strcmp(p, "snd6") == 0) { 1801da177e4SLinus Torvalds atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift; 1816ff5801aSRoman Zippel } else if (strcmp(p, "snd7") == 0) { 1821da177e4SLinus Torvalds atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift; 1831da177e4SLinus Torvalds } 1841da177e4SLinus Torvalds } 185d6713b40SRoman Zippel return 0; 1861da177e4SLinus Torvalds } 1871da177e4SLinus Torvalds 188d6713b40SRoman Zippel early_param("switches", atari_switches_setup); 189d6713b40SRoman Zippel 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* 1921da177e4SLinus Torvalds * Setup the Atari configuration info 1931da177e4SLinus Torvalds */ 1941da177e4SLinus Torvalds 1951da177e4SLinus Torvalds void __init config_atari(void) 1961da177e4SLinus Torvalds { 1971da177e4SLinus Torvalds unsigned short tos_version; 1981da177e4SLinus Torvalds 1991da177e4SLinus Torvalds memset(&atari_hw_present, 0, sizeof(atari_hw_present)); 2001da177e4SLinus Torvalds 2016ff5801aSRoman Zippel /* Change size of I/O space from 64KB to 4GB. */ 2026ff5801aSRoman Zippel ioport_resource.end = 0xFFFFFFFF; 2031da177e4SLinus Torvalds 2041da177e4SLinus Torvalds mach_sched_init = atari_sched_init; 2051da177e4SLinus Torvalds mach_init_IRQ = atari_init_IRQ; 2061da177e4SLinus Torvalds mach_get_model = atari_get_model; 2071da177e4SLinus Torvalds mach_get_hardware_list = atari_get_hardware_list; 208c8d5ba18SStephen Warren arch_gettimeoffset = atari_gettimeoffset; 2091da177e4SLinus Torvalds mach_reset = atari_reset; 2101da177e4SLinus Torvalds mach_max_dma_address = 0xffffff; 2111da177e4SLinus Torvalds #if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE) 2121da177e4SLinus Torvalds mach_beep = atari_mksound; 2131da177e4SLinus Torvalds #endif 2141da177e4SLinus Torvalds #ifdef CONFIG_HEARTBEAT 2151da177e4SLinus Torvalds mach_heartbeat = atari_heartbeat; 2161da177e4SLinus Torvalds #endif 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* Set switches as requested by the user */ 2191da177e4SLinus Torvalds if (atari_switches & ATARI_SWITCH_IKBD) 2201da177e4SLinus Torvalds acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID; 2211da177e4SLinus Torvalds if (atari_switches & ATARI_SWITCH_MIDI) 2221da177e4SLinus Torvalds acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; 2231da177e4SLinus Torvalds if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) { 2241da177e4SLinus Torvalds sound_ym.rd_data_reg_sel = 14; 2251da177e4SLinus Torvalds sound_ym.wd_data = sound_ym.rd_data_reg_sel | 2261da177e4SLinus Torvalds ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) | 2271da177e4SLinus Torvalds ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0); 2281da177e4SLinus Torvalds } 2291da177e4SLinus Torvalds 2301da177e4SLinus Torvalds /* ++bjoern: 2311da177e4SLinus Torvalds * Determine hardware present 2321da177e4SLinus Torvalds */ 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds printk("Atari hardware found: "); 23529c8a246SAdrian Bunk if (MACH_IS_MEDUSA) { 2361da177e4SLinus Torvalds /* There's no Atari video hardware on the Medusa, but all the 2371da177e4SLinus Torvalds * addresses below generate a DTACK so no bus error occurs! */ 2386ff5801aSRoman Zippel } else if (hwreg_present(f030_xreg)) { 2391da177e4SLinus Torvalds ATARIHW_SET(VIDEL_SHIFTER); 2401da177e4SLinus Torvalds printk("VIDEL "); 2411da177e4SLinus Torvalds /* This is a temporary hack: If there is Falcon video 2421da177e4SLinus Torvalds * hardware, we assume that the ST-DMA serves SCSI instead of 2431da177e4SLinus Torvalds * ACSI. In the future, there should be a better method for 2441da177e4SLinus Torvalds * this... 2451da177e4SLinus Torvalds */ 2461da177e4SLinus Torvalds ATARIHW_SET(ST_SCSI); 2471da177e4SLinus Torvalds printk("STDMA-SCSI "); 2486ff5801aSRoman Zippel } else if (hwreg_present(tt_palette)) { 2491da177e4SLinus Torvalds ATARIHW_SET(TT_SHIFTER); 2501da177e4SLinus Torvalds printk("TT_SHIFTER "); 2516ff5801aSRoman Zippel } else if (hwreg_present(&shifter.bas_hi)) { 2521da177e4SLinus Torvalds if (hwreg_present(&shifter.bas_lo) && 2531da177e4SLinus Torvalds (shifter.bas_lo = 0x0aau, shifter.bas_lo == 0x0aau)) { 2541da177e4SLinus Torvalds ATARIHW_SET(EXTD_SHIFTER); 2551da177e4SLinus Torvalds printk("EXTD_SHIFTER "); 2566ff5801aSRoman Zippel } else { 2571da177e4SLinus Torvalds ATARIHW_SET(STND_SHIFTER); 2581da177e4SLinus Torvalds printk("STND_SHIFTER "); 2591da177e4SLinus Torvalds } 2601da177e4SLinus Torvalds } 2613d92e8f3SGeert Uytterhoeven if (hwreg_present(&st_mfp.par_dt_reg)) { 2621da177e4SLinus Torvalds ATARIHW_SET(ST_MFP); 2631da177e4SLinus Torvalds printk("ST_MFP "); 2641da177e4SLinus Torvalds } 2651da177e4SLinus Torvalds if (hwreg_present(&tt_mfp.par_dt_reg)) { 2661da177e4SLinus Torvalds ATARIHW_SET(TT_MFP); 2671da177e4SLinus Torvalds printk("TT_MFP "); 2681da177e4SLinus Torvalds } 2691da177e4SLinus Torvalds if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) { 2701da177e4SLinus Torvalds ATARIHW_SET(SCSI_DMA); 2711da177e4SLinus Torvalds printk("TT_SCSI_DMA "); 2721da177e4SLinus Torvalds } 2736ff5801aSRoman Zippel /* 2746ff5801aSRoman Zippel * The ST-DMA address registers aren't readable 2756ff5801aSRoman Zippel * on all Medusas, so the test below may fail 2766ff5801aSRoman Zippel */ 2776ff5801aSRoman Zippel if (MACH_IS_MEDUSA || 2781da177e4SLinus Torvalds (hwreg_present(&st_dma.dma_vhi) && 2791da177e4SLinus Torvalds (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) && 2801da177e4SLinus Torvalds st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa && 2811da177e4SLinus Torvalds (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) && 2821da177e4SLinus Torvalds st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) { 2831da177e4SLinus Torvalds ATARIHW_SET(EXTD_DMA); 2841da177e4SLinus Torvalds printk("EXTD_DMA "); 2851da177e4SLinus Torvalds } 2861da177e4SLinus Torvalds if (hwreg_present(&tt_scsi.scsi_data)) { 2871da177e4SLinus Torvalds ATARIHW_SET(TT_SCSI); 2881da177e4SLinus Torvalds printk("TT_SCSI "); 2891da177e4SLinus Torvalds } 2901da177e4SLinus Torvalds if (hwreg_present(&sound_ym.rd_data_reg_sel)) { 2911da177e4SLinus Torvalds ATARIHW_SET(YM_2149); 2921da177e4SLinus Torvalds printk("YM2149 "); 2931da177e4SLinus Torvalds } 29429c8a246SAdrian Bunk if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) { 2951da177e4SLinus Torvalds ATARIHW_SET(PCM_8BIT); 2961da177e4SLinus Torvalds printk("PCM "); 2971da177e4SLinus Torvalds } 29829c8a246SAdrian Bunk if (hwreg_present(&falcon_codec.unused5)) { 2991da177e4SLinus Torvalds ATARIHW_SET(CODEC); 3001da177e4SLinus Torvalds printk("CODEC "); 3011da177e4SLinus Torvalds } 3021da177e4SLinus Torvalds if (hwreg_present(&dsp56k_host_interface.icr)) { 3031da177e4SLinus Torvalds ATARIHW_SET(DSP56K); 3041da177e4SLinus Torvalds printk("DSP56K "); 3051da177e4SLinus Torvalds } 3061da177e4SLinus Torvalds if (hwreg_present(&tt_scc_dma.dma_ctrl) && 3071da177e4SLinus Torvalds #if 0 3081da177e4SLinus Torvalds /* This test sucks! Who knows some better? */ 3091da177e4SLinus Torvalds (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) && 3101da177e4SLinus Torvalds (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0) 3111da177e4SLinus Torvalds #else 31229c8a246SAdrian Bunk !MACH_IS_MEDUSA 3131da177e4SLinus Torvalds #endif 3141da177e4SLinus Torvalds ) { 3151da177e4SLinus Torvalds ATARIHW_SET(SCC_DMA); 3161da177e4SLinus Torvalds printk("SCC_DMA "); 3171da177e4SLinus Torvalds } 318de339e4bSGeert Uytterhoeven if (scc_test(&atari_scc.cha_a_ctrl)) { 3191da177e4SLinus Torvalds ATARIHW_SET(SCC); 3201da177e4SLinus Torvalds printk("SCC "); 3211da177e4SLinus Torvalds } 3221da177e4SLinus Torvalds if (scc_test(&st_escc.cha_b_ctrl)) { 3231da177e4SLinus Torvalds ATARIHW_SET(ST_ESCC); 3241da177e4SLinus Torvalds printk("ST_ESCC "); 3251da177e4SLinus Torvalds } 32629c8a246SAdrian Bunk if (hwreg_present(&tt_scu.sys_mask)) { 3271da177e4SLinus Torvalds ATARIHW_SET(SCU); 3281da177e4SLinus Torvalds /* Assume a VME bus if there's a SCU */ 3291da177e4SLinus Torvalds ATARIHW_SET(VME); 3301da177e4SLinus Torvalds printk("VME SCU "); 3311da177e4SLinus Torvalds } 3321da177e4SLinus Torvalds if (hwreg_present((void *)(0xffff9210))) { 3331da177e4SLinus Torvalds ATARIHW_SET(ANALOG_JOY); 3341da177e4SLinus Torvalds printk("ANALOG_JOY "); 3351da177e4SLinus Torvalds } 33629c8a246SAdrian Bunk if (hwreg_present(blitter.halftone)) { 3371da177e4SLinus Torvalds ATARIHW_SET(BLITTER); 3381da177e4SLinus Torvalds printk("BLITTER "); 3391da177e4SLinus Torvalds } 3401da177e4SLinus Torvalds if (hwreg_present((void *)0xfff00039)) { 3411da177e4SLinus Torvalds ATARIHW_SET(IDE); 3421da177e4SLinus Torvalds printk("IDE "); 3431da177e4SLinus Torvalds } 3441da177e4SLinus Torvalds #if 1 /* This maybe wrong */ 34529c8a246SAdrian Bunk if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) && 3461da177e4SLinus Torvalds hwreg_present(&tt_microwire.mask) && 3471da177e4SLinus Torvalds (tt_microwire.mask = 0x7ff, 3481da177e4SLinus Torvalds udelay(1), 3491da177e4SLinus Torvalds tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR, 3501da177e4SLinus Torvalds udelay(1), 3511da177e4SLinus Torvalds tt_microwire.data != 0)) { 3521da177e4SLinus Torvalds ATARIHW_SET(MICROWIRE); 3536ff5801aSRoman Zippel while (tt_microwire.mask != 0x7ff) 3546ff5801aSRoman Zippel ; 3551da177e4SLinus Torvalds printk("MICROWIRE "); 3561da177e4SLinus Torvalds } 3571da177e4SLinus Torvalds #endif 3581da177e4SLinus Torvalds if (hwreg_present(&tt_rtc.regsel)) { 3591da177e4SLinus Torvalds ATARIHW_SET(TT_CLK); 3601da177e4SLinus Torvalds printk("TT_CLK "); 3611da177e4SLinus Torvalds mach_hwclk = atari_tt_hwclk; 3621da177e4SLinus Torvalds mach_set_clock_mmss = atari_tt_set_clock_mmss; 3631da177e4SLinus Torvalds } 36429c8a246SAdrian Bunk if (hwreg_present(&mste_rtc.sec_ones)) { 3651da177e4SLinus Torvalds ATARIHW_SET(MSTE_CLK); 3661da177e4SLinus Torvalds printk("MSTE_CLK "); 3671da177e4SLinus Torvalds mach_hwclk = atari_mste_hwclk; 3681da177e4SLinus Torvalds mach_set_clock_mmss = atari_mste_set_clock_mmss; 3691da177e4SLinus Torvalds } 37029c8a246SAdrian Bunk if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) && 3711da177e4SLinus Torvalds hwreg_write(&dma_wd.fdc_speed, 0)) { 3721da177e4SLinus Torvalds ATARIHW_SET(FDCSPEED); 3731da177e4SLinus Torvalds printk("FDC_SPEED "); 3741da177e4SLinus Torvalds } 37529c8a246SAdrian Bunk if (!ATARIHW_PRESENT(ST_SCSI)) { 3761da177e4SLinus Torvalds ATARIHW_SET(ACSI); 3771da177e4SLinus Torvalds printk("ACSI "); 3781da177e4SLinus Torvalds } 3791da177e4SLinus Torvalds printk("\n"); 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds if (CPU_IS_040_OR_060) 3821da177e4SLinus Torvalds /* Now it seems to be safe to turn of the tt0 transparent 3831da177e4SLinus Torvalds * translation (the one that must not be turned off in 3841da177e4SLinus Torvalds * head.S...) 3851da177e4SLinus Torvalds */ 3866ff5801aSRoman Zippel asm volatile ("\n" 3876ff5801aSRoman Zippel " moveq #0,%%d0\n" 3886ff5801aSRoman Zippel " .chip 68040\n" 3896ff5801aSRoman Zippel " movec %%d0,%%itt0\n" 3906ff5801aSRoman Zippel " movec %%d0,%%dtt0\n" 3911da177e4SLinus Torvalds " .chip 68k" 3921da177e4SLinus Torvalds : /* no outputs */ 3931da177e4SLinus Torvalds : /* no inputs */ 3941da177e4SLinus Torvalds : "d0"); 3951da177e4SLinus Torvalds 3961da177e4SLinus Torvalds /* allocator for memory that must reside in st-ram */ 3971da177e4SLinus Torvalds atari_stram_init(); 3981da177e4SLinus Torvalds 3991da177e4SLinus Torvalds /* Set up a mapping for the VMEbus address region: 4001da177e4SLinus Torvalds * 4011da177e4SLinus Torvalds * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff 4021da177e4SLinus Torvalds * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at 4031da177e4SLinus Torvalds * 0xfe000000 virt., because this can be done with a single 4041da177e4SLinus Torvalds * transparent translation. On the 68040, lots of often unused 4051da177e4SLinus Torvalds * page tables would be needed otherwise. On a MegaSTE or similar, 4061da177e4SLinus Torvalds * the highest byte is stripped off by hardware due to the 24 bit 4071da177e4SLinus Torvalds * design of the bus. 4081da177e4SLinus Torvalds */ 4091da177e4SLinus Torvalds 4101da177e4SLinus Torvalds if (CPU_IS_020_OR_030) { 4111da177e4SLinus Torvalds unsigned long tt1_val; 4121da177e4SLinus Torvalds tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache 4131da177e4SLinus Torvalds * inhibit, read and write, FDC mask = 3, 4141da177e4SLinus Torvalds * FDC val = 4 -> Supervisor only */ 4156ff5801aSRoman Zippel asm volatile ("\n" 4166ff5801aSRoman Zippel " .chip 68030\n" 4172a353506SAndreas Schwab " pmove %0,%/tt1\n" 4181da177e4SLinus Torvalds " .chip 68k" 4192a353506SAndreas Schwab : : "m" (tt1_val)); 4206ff5801aSRoman Zippel } else { 4216ff5801aSRoman Zippel asm volatile ("\n" 4226ff5801aSRoman Zippel " .chip 68040\n" 4236ff5801aSRoman Zippel " movec %0,%%itt1\n" 4246ff5801aSRoman Zippel " movec %0,%%dtt1\n" 4251da177e4SLinus Torvalds " .chip 68k" 4261da177e4SLinus Torvalds : 4276ff5801aSRoman Zippel : "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable, 4281da177e4SLinus Torvalds * supervisor only, non-cacheable/ 4291da177e4SLinus Torvalds * serialized, writable */ 4301da177e4SLinus Torvalds 4311da177e4SLinus Torvalds } 4321da177e4SLinus Torvalds 4331da177e4SLinus Torvalds /* Fetch tos version at Physical 2 */ 4346ff5801aSRoman Zippel /* 4356ff5801aSRoman Zippel * We my not be able to access this address if the kernel is 4366ff5801aSRoman Zippel * loaded to st ram, since the first page is unmapped. On the 4376ff5801aSRoman Zippel * Medusa this is always the case and there is nothing we can do 4386ff5801aSRoman Zippel * about this, so we just assume the smaller offset. For the TT 4396ff5801aSRoman Zippel * we use the fact that in head.S we have set up a mapping 4406ff5801aSRoman Zippel * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible 4416ff5801aSRoman Zippel * in the last 16MB of the address space. 4426ff5801aSRoman Zippel */ 44329c8a246SAdrian Bunk tos_version = (MACH_IS_MEDUSA) ? 4441da177e4SLinus Torvalds 0xfff : *(unsigned short *)0xff000002; 4451da177e4SLinus Torvalds atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68; 4461da177e4SLinus Torvalds } 4471da177e4SLinus Torvalds 4481da177e4SLinus Torvalds #ifdef CONFIG_HEARTBEAT 4491da177e4SLinus Torvalds static void atari_heartbeat(int on) 4501da177e4SLinus Torvalds { 4511da177e4SLinus Torvalds unsigned char tmp; 4521da177e4SLinus Torvalds unsigned long flags; 4531da177e4SLinus Torvalds 4541da177e4SLinus Torvalds if (atari_dont_touch_floppy_select) 4551da177e4SLinus Torvalds return; 4561da177e4SLinus Torvalds 4571da177e4SLinus Torvalds local_irq_save(flags); 4581da177e4SLinus Torvalds sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */ 4591da177e4SLinus Torvalds tmp = sound_ym.rd_data_reg_sel; 4601da177e4SLinus Torvalds sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02); 4611da177e4SLinus Torvalds local_irq_restore(flags); 4621da177e4SLinus Torvalds } 4631da177e4SLinus Torvalds #endif 4641da177e4SLinus Torvalds 4651da177e4SLinus Torvalds /* ++roman: 4661da177e4SLinus Torvalds * 4671da177e4SLinus Torvalds * This function does a reset on machines that lack the ability to 4681da177e4SLinus Torvalds * assert the processor's _RESET signal somehow via hardware. It is 4691da177e4SLinus Torvalds * based on the fact that you can find the initial SP and PC values 4701da177e4SLinus Torvalds * after a reset at physical addresses 0 and 4. This works pretty well 4711da177e4SLinus Torvalds * for Atari machines, since the lowest 8 bytes of physical memory are 4721da177e4SLinus Torvalds * really ROM (mapped by hardware). For other 680x0 machines: don't 4731da177e4SLinus Torvalds * know if it works... 4741da177e4SLinus Torvalds * 4751da177e4SLinus Torvalds * To get the values at addresses 0 and 4, the MMU better is turned 4761da177e4SLinus Torvalds * off first. After that, we have to jump into physical address space 4771da177e4SLinus Torvalds * (the PC before the pmove statement points to the virtual address of 4781da177e4SLinus Torvalds * the code). Getting that physical address is not hard, but the code 4791da177e4SLinus Torvalds * becomes a bit complex since I've tried to ensure that the jump 4801da177e4SLinus Torvalds * statement after the pmove is in the cache already (otherwise the 4811da177e4SLinus Torvalds * processor can't fetch it!). For that, the code first jumps to the 4821da177e4SLinus Torvalds * jump statement with the (virtual) address of the pmove section in 4831da177e4SLinus Torvalds * an address register . The jump statement is surely in the cache 4841da177e4SLinus Torvalds * now. After that, that physical address of the reset code is loaded 4851da177e4SLinus Torvalds * into the same address register, pmove is done and the same jump 4861da177e4SLinus Torvalds * statements goes to the reset code. Since there are not many 4871da177e4SLinus Torvalds * statements between the two jumps, I hope it stays in the cache. 4881da177e4SLinus Torvalds * 4891da177e4SLinus Torvalds * The C code makes heavy use of the GCC features that you can get the 4901da177e4SLinus Torvalds * address of a C label. No hope to compile this with another compiler 4911da177e4SLinus Torvalds * than GCC! 4921da177e4SLinus Torvalds */ 4931da177e4SLinus Torvalds 4941da177e4SLinus Torvalds /* ++andreas: no need for complicated code, just depend on prefetch */ 4951da177e4SLinus Torvalds 4961da177e4SLinus Torvalds static void atari_reset(void) 4971da177e4SLinus Torvalds { 4981da177e4SLinus Torvalds long tc_val = 0; 4991da177e4SLinus Torvalds long reset_addr; 5001da177e4SLinus Torvalds 5016ff5801aSRoman Zippel /* 5026ff5801aSRoman Zippel * On the Medusa, phys. 0x4 may contain garbage because it's no 5036ff5801aSRoman Zippel * ROM. See above for explanation why we cannot use PTOV(4). 5046ff5801aSRoman Zippel */ 50529c8a246SAdrian Bunk reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : 5061da177e4SLinus Torvalds *(unsigned long *) 0xff000004; 5071da177e4SLinus Torvalds 5081da177e4SLinus Torvalds /* reset ACIA for switch off OverScan, if it's active */ 5091da177e4SLinus Torvalds if (atari_switches & ATARI_SWITCH_OVSC_IKBD) 5101da177e4SLinus Torvalds acia.key_ctrl = ACIA_RESET; 5111da177e4SLinus Torvalds if (atari_switches & ATARI_SWITCH_OVSC_MIDI) 5121da177e4SLinus Torvalds acia.mid_ctrl = ACIA_RESET; 5131da177e4SLinus Torvalds 5141da177e4SLinus Torvalds /* processor independent: turn off interrupts and reset the VBR; 5151da177e4SLinus Torvalds * the caches must be left enabled, else prefetching the final jump 5166ff5801aSRoman Zippel * instruction doesn't work. 5176ff5801aSRoman Zippel */ 5181da177e4SLinus Torvalds local_irq_disable(); 5196ff5801aSRoman Zippel asm volatile ("movec %0,%%vbr" 5206ff5801aSRoman Zippel : : "d" (0)); 5211da177e4SLinus Torvalds 5221da177e4SLinus Torvalds if (CPU_IS_040_OR_060) { 5231da177e4SLinus Torvalds unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040); 5241da177e4SLinus Torvalds if (CPU_IS_060) { 5251da177e4SLinus Torvalds /* 68060: clear PCR to turn off superscalar operation */ 5266ff5801aSRoman Zippel asm volatile ("\n" 5276ff5801aSRoman Zippel " .chip 68060\n" 5286ff5801aSRoman Zippel " movec %0,%%pcr\n" 5291da177e4SLinus Torvalds " .chip 68k" 5306ff5801aSRoman Zippel : : "d" (0)); 5311da177e4SLinus Torvalds } 5321da177e4SLinus Torvalds 5336ff5801aSRoman Zippel asm volatile ("\n" 5346ff5801aSRoman Zippel " move.l %0,%%d0\n" 5356ff5801aSRoman Zippel " and.l #0xff000000,%%d0\n" 5366ff5801aSRoman Zippel " or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */ 5376ff5801aSRoman Zippel " .chip 68040\n" 5386ff5801aSRoman Zippel " movec %%d0,%%itt0\n" 5396ff5801aSRoman Zippel " movec %%d0,%%dtt0\n" 5406ff5801aSRoman Zippel " .chip 68k\n" 5416ff5801aSRoman Zippel " jmp %0@" 5426ff5801aSRoman Zippel : : "a" (jmp_addr040) 5431da177e4SLinus Torvalds : "d0"); 5441da177e4SLinus Torvalds jmp_addr_label040: 5456ff5801aSRoman Zippel asm volatile ("\n" 5466ff5801aSRoman Zippel " moveq #0,%%d0\n" 5476ff5801aSRoman Zippel " nop\n" 5486ff5801aSRoman Zippel " .chip 68040\n" 5496ff5801aSRoman Zippel " cinva %%bc\n" 5506ff5801aSRoman Zippel " nop\n" 5516ff5801aSRoman Zippel " pflusha\n" 5526ff5801aSRoman Zippel " nop\n" 5536ff5801aSRoman Zippel " movec %%d0,%%tc\n" 5546ff5801aSRoman Zippel " nop\n" 5551da177e4SLinus Torvalds /* the following setup of transparent translations is needed on the 5561da177e4SLinus Torvalds * Afterburner040 to successfully reboot. Other machines shouldn't 5571da177e4SLinus Torvalds * care about a different tt regs setup, they also didn't care in 5581da177e4SLinus Torvalds * the past that the regs weren't turned off. */ 5596ff5801aSRoman Zippel " move.l #0xffc000,%%d0\n" /* whole insn space cacheable */ 5606ff5801aSRoman Zippel " movec %%d0,%%itt0\n" 5616ff5801aSRoman Zippel " movec %%d0,%%itt1\n" 5626ff5801aSRoman Zippel " or.w #0x40,%/d0\n" /* whole data space non-cacheable/ser. */ 5636ff5801aSRoman Zippel " movec %%d0,%%dtt0\n" 5646ff5801aSRoman Zippel " movec %%d0,%%dtt1\n" 5656ff5801aSRoman Zippel " .chip 68k\n" 5661da177e4SLinus Torvalds " jmp %0@" 5671da177e4SLinus Torvalds : /* no outputs */ 5681da177e4SLinus Torvalds : "a" (reset_addr) 5691da177e4SLinus Torvalds : "d0"); 5706ff5801aSRoman Zippel } else 5716ff5801aSRoman Zippel asm volatile ("\n" 5722a353506SAndreas Schwab " pmove %0,%%tc\n" 5731da177e4SLinus Torvalds " jmp %1@" 5741da177e4SLinus Torvalds : /* no outputs */ 5752a353506SAndreas Schwab : "m" (tc_val), "a" (reset_addr)); 5761da177e4SLinus Torvalds } 5771da177e4SLinus Torvalds 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds static void atari_get_model(char *model) 5801da177e4SLinus Torvalds { 5811da177e4SLinus Torvalds strcpy(model, "Atari "); 5821da177e4SLinus Torvalds switch (atari_mch_cookie >> 16) { 5831da177e4SLinus Torvalds case ATARI_MCH_ST: 5841da177e4SLinus Torvalds if (ATARIHW_PRESENT(MSTE_CLK)) 5851da177e4SLinus Torvalds strcat(model, "Mega ST"); 5861da177e4SLinus Torvalds else 5871da177e4SLinus Torvalds strcat(model, "ST"); 5881da177e4SLinus Torvalds break; 5891da177e4SLinus Torvalds case ATARI_MCH_STE: 5901da177e4SLinus Torvalds if (MACH_IS_MSTE) 5911da177e4SLinus Torvalds strcat(model, "Mega STE"); 5921da177e4SLinus Torvalds else 5931da177e4SLinus Torvalds strcat(model, "STE"); 5941da177e4SLinus Torvalds break; 5951da177e4SLinus Torvalds case ATARI_MCH_TT: 5961da177e4SLinus Torvalds if (MACH_IS_MEDUSA) 5971da177e4SLinus Torvalds /* Medusa has TT _MCH cookie */ 5981da177e4SLinus Torvalds strcat(model, "Medusa"); 5991da177e4SLinus Torvalds else 6001da177e4SLinus Torvalds strcat(model, "TT"); 6011da177e4SLinus Torvalds break; 6021da177e4SLinus Torvalds case ATARI_MCH_FALCON: 6031da177e4SLinus Torvalds strcat(model, "Falcon"); 6041da177e4SLinus Torvalds if (MACH_IS_AB40) 6051da177e4SLinus Torvalds strcat(model, " (with Afterburner040)"); 6061da177e4SLinus Torvalds break; 6071da177e4SLinus Torvalds default: 6081da177e4SLinus Torvalds sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)", 6091da177e4SLinus Torvalds atari_mch_cookie); 6101da177e4SLinus Torvalds break; 6111da177e4SLinus Torvalds } 6121da177e4SLinus Torvalds } 6131da177e4SLinus Torvalds 6141da177e4SLinus Torvalds 615813dcf7aSAlexey Dobriyan static void atari_get_hardware_list(struct seq_file *m) 6161da177e4SLinus Torvalds { 617813dcf7aSAlexey Dobriyan int i; 6181da177e4SLinus Torvalds 6191da177e4SLinus Torvalds for (i = 0; i < m68k_num_memory; i++) 620813dcf7aSAlexey Dobriyan seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n", 6211da177e4SLinus Torvalds m68k_memory[i].size >> 20, m68k_memory[i].addr, 6221da177e4SLinus Torvalds (m68k_memory[i].addr & 0xff000000 ? 6231da177e4SLinus Torvalds "alternate RAM" : "ST-RAM")); 6241da177e4SLinus Torvalds 6251da177e4SLinus Torvalds #define ATARIHW_ANNOUNCE(name, str) \ 6261da177e4SLinus Torvalds if (ATARIHW_PRESENT(name)) \ 627813dcf7aSAlexey Dobriyan seq_printf(m, "\t%s\n", str) 6281da177e4SLinus Torvalds 629813dcf7aSAlexey Dobriyan seq_printf(m, "Detected hardware:\n"); 6301da177e4SLinus Torvalds ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter"); 6311da177e4SLinus Torvalds ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter"); 6321da177e4SLinus Torvalds ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter"); 6331da177e4SLinus Torvalds ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter"); 6341da177e4SLinus Torvalds ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator"); 6351da177e4SLinus Torvalds ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound"); 6361da177e4SLinus Torvalds ATARIHW_ANNOUNCE(CODEC, "CODEC Sound"); 6371da177e4SLinus Torvalds ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)"); 6381da177e4SLinus Torvalds ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)"); 6391da177e4SLinus Torvalds ATARIHW_ANNOUNCE(ACSI, "ACSI Interface"); 6401da177e4SLinus Torvalds ATARIHW_ANNOUNCE(IDE, "IDE Interface"); 6411da177e4SLinus Torvalds ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC"); 6421da177e4SLinus Torvalds ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901"); 6431da177e4SLinus Torvalds ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901"); 6441da177e4SLinus Torvalds ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530"); 6451da177e4SLinus Torvalds ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230"); 6461da177e4SLinus Torvalds ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface"); 6471da177e4SLinus Torvalds ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface"); 6481da177e4SLinus Torvalds ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)"); 6491da177e4SLinus Torvalds ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)"); 6501da177e4SLinus Torvalds ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380"); 6511da177e4SLinus Torvalds ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC"); 6521da177e4SLinus Torvalds ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A"); 6531da177e4SLinus Torvalds ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15"); 6541da177e4SLinus Torvalds ATARIHW_ANNOUNCE(SCU, "System Control Unit"); 6551da177e4SLinus Torvalds ATARIHW_ANNOUNCE(BLITTER, "Blitter"); 6561da177e4SLinus Torvalds ATARIHW_ANNOUNCE(VME, "VME Bus"); 6571da177e4SLinus Torvalds ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor"); 6581da177e4SLinus Torvalds } 659736b24dbSMichael Schmitz 660736b24dbSMichael Schmitz /* 661736b24dbSMichael Schmitz * MSch: initial platform device support for Atari, 662736b24dbSMichael Schmitz * required for EtherNAT driver 663736b24dbSMichael Schmitz */ 664736b24dbSMichael Schmitz 665736b24dbSMichael Schmitz #ifdef CONFIG_ATARI_ETHERNAT 666736b24dbSMichael Schmitz /* 667736b24dbSMichael Schmitz * EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver 668736b24dbSMichael Schmitz */ 669736b24dbSMichael Schmitz 670736b24dbSMichael Schmitz #define ATARI_ETHERNAT_IRQ 140 671736b24dbSMichael Schmitz 672736b24dbSMichael Schmitz static struct resource smc91x_resources[] = { 673736b24dbSMichael Schmitz [0] = { 674736b24dbSMichael Schmitz .name = "smc91x-regs", 675736b24dbSMichael Schmitz .start = ATARI_ETHERNAT_PHYS_ADDR, 676736b24dbSMichael Schmitz .end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff, 677736b24dbSMichael Schmitz .flags = IORESOURCE_MEM, 678736b24dbSMichael Schmitz }, 679736b24dbSMichael Schmitz [1] = { 680736b24dbSMichael Schmitz .name = "smc91x-irq", 681736b24dbSMichael Schmitz .start = ATARI_ETHERNAT_IRQ, 682736b24dbSMichael Schmitz .end = ATARI_ETHERNAT_IRQ, 683736b24dbSMichael Schmitz .flags = IORESOURCE_IRQ, 684736b24dbSMichael Schmitz }, 685736b24dbSMichael Schmitz }; 686736b24dbSMichael Schmitz 687736b24dbSMichael Schmitz static struct platform_device smc91x_device = { 688736b24dbSMichael Schmitz .name = "smc91x", 689736b24dbSMichael Schmitz .id = -1, 690736b24dbSMichael Schmitz .num_resources = ARRAY_SIZE(smc91x_resources), 691736b24dbSMichael Schmitz .resource = smc91x_resources, 692736b24dbSMichael Schmitz }; 693736b24dbSMichael Schmitz 694736b24dbSMichael Schmitz static struct platform_device *atari_ethernat_devices[] __initdata = { 695736b24dbSMichael Schmitz &smc91x_device 696736b24dbSMichael Schmitz }; 697736b24dbSMichael Schmitz #endif /* CONFIG_ATARI_ETHERNAT */ 698736b24dbSMichael Schmitz 699736b24dbSMichael Schmitz int __init atari_platform_init(void) 700736b24dbSMichael Schmitz { 701736b24dbSMichael Schmitz int rv = 0; 702736b24dbSMichael Schmitz 703736b24dbSMichael Schmitz if (!MACH_IS_ATARI) 704736b24dbSMichael Schmitz return -ENODEV; 705736b24dbSMichael Schmitz 706736b24dbSMichael Schmitz #ifdef CONFIG_ATARI_ETHERNAT 707736b24dbSMichael Schmitz { 708736b24dbSMichael Schmitz unsigned char *enatc_virt; 709736b24dbSMichael Schmitz enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf); 710736b24dbSMichael Schmitz if (hwreg_present(enatc_virt)) { 711736b24dbSMichael Schmitz rv = platform_add_devices(atari_ethernat_devices, 712736b24dbSMichael Schmitz ARRAY_SIZE(atari_ethernat_devices)); 713736b24dbSMichael Schmitz } 714736b24dbSMichael Schmitz iounmap(enatc_virt); 715736b24dbSMichael Schmitz } 716736b24dbSMichael Schmitz #endif 717736b24dbSMichael Schmitz 718736b24dbSMichael Schmitz return rv; 719736b24dbSMichael Schmitz } 720736b24dbSMichael Schmitz 721736b24dbSMichael Schmitz arch_initcall(atari_platform_init); 722