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936 lines
24 KiB
936 lines
24 KiB
/* |
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* linux/arch/m68k/atari/config.c |
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* |
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* Copyright (C) 1994 Bjoern Brauel |
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* |
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* 5/2/94 Roman Hodek: |
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* Added setting of time_adj to get a better clock. |
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* |
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* 5/14/94 Roman Hodek: |
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* gettod() for TT |
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* |
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* 5/15/94 Roman Hodek: |
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* hard_reset_now() for Atari (and others?) |
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* |
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* 94/12/30 Andreas Schwab: |
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* atari_sched_init fixed to get precise clock. |
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* |
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* This file is subject to the terms and conditions of the GNU General Public |
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* License. See the file COPYING in the main directory of this archive |
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* for more details. |
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*/ |
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|
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/* |
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* Miscellaneous atari stuff |
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*/ |
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|
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#include <linux/types.h> |
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#include <linux/mm.h> |
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#include <linux/seq_file.h> |
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#include <linux/console.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/ioport.h> |
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#include <linux/platform_device.h> |
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#include <linux/usb/isp116x.h> |
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#include <linux/vt_kern.h> |
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#include <linux/module.h> |
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|
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#include <asm/bootinfo.h> |
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#include <asm/bootinfo-atari.h> |
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#include <asm/byteorder.h> |
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#include <asm/setup.h> |
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#include <asm/atarihw.h> |
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#include <asm/atariints.h> |
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#include <asm/atari_stram.h> |
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#include <asm/machdep.h> |
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#include <asm/hwtest.h> |
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#include <asm/io.h> |
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u_long atari_mch_cookie; |
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EXPORT_SYMBOL(atari_mch_cookie); |
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u_long atari_mch_type; |
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EXPORT_SYMBOL(atari_mch_type); |
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struct atari_hw_present atari_hw_present; |
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EXPORT_SYMBOL(atari_hw_present); |
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u_long atari_switches; |
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EXPORT_SYMBOL(atari_switches); |
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int atari_dont_touch_floppy_select; |
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EXPORT_SYMBOL(atari_dont_touch_floppy_select); |
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int atari_rtc_year_offset; |
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|
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/* local function prototypes */ |
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static void atari_reset(void); |
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static void atari_get_model(char *model); |
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static void atari_get_hardware_list(struct seq_file *m); |
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|
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/* atari specific irq functions */ |
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extern void atari_init_IRQ (void); |
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extern void atari_mksound(unsigned int count, unsigned int ticks); |
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#ifdef CONFIG_HEARTBEAT |
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static void atari_heartbeat(int on); |
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#endif |
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|
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/* atari specific timer functions (in time.c) */ |
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extern void atari_sched_init(void); |
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extern int atari_mste_hwclk (int, struct rtc_time *); |
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extern int atari_tt_hwclk (int, struct rtc_time *); |
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|
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/* ++roman: This is a more elaborate test for an SCC chip, since the plain |
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* Medusa board generates DTACK at the SCC's standard addresses, but a SCC |
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* board in the Medusa is possible. Also, the addresses where the ST_ESCC |
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* resides generate DTACK without the chip, too. |
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* The method is to write values into the interrupt vector register, that |
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* should be readable without trouble (from channel A!). |
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*/ |
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|
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static int __init scc_test(volatile char *ctla) |
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{ |
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if (!hwreg_present(ctla)) |
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return 0; |
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MFPDELAY(); |
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*ctla = 2; |
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MFPDELAY(); |
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*ctla = 0x40; |
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MFPDELAY(); |
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*ctla = 2; |
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MFPDELAY(); |
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if (*ctla != 0x40) |
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return 0; |
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MFPDELAY(); |
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*ctla = 2; |
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MFPDELAY(); |
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*ctla = 0x60; |
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MFPDELAY(); |
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*ctla = 2; |
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MFPDELAY(); |
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if (*ctla != 0x60) |
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return 0; |
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|
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return 1; |
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} |
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/* |
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* Parse an Atari-specific record in the bootinfo |
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*/ |
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|
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int __init atari_parse_bootinfo(const struct bi_record *record) |
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{ |
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int unknown = 0; |
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const void *data = record->data; |
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|
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switch (be16_to_cpu(record->tag)) { |
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case BI_ATARI_MCH_COOKIE: |
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atari_mch_cookie = be32_to_cpup(data); |
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break; |
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case BI_ATARI_MCH_TYPE: |
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atari_mch_type = be32_to_cpup(data); |
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break; |
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default: |
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unknown = 1; |
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break; |
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} |
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return unknown; |
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} |
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|
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/* Parse the Atari-specific switches= option. */ |
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static int __init atari_switches_setup(char *str) |
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{ |
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char switches[COMMAND_LINE_SIZE]; |
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char *p; |
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int ovsc_shift; |
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char *args = switches; |
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if (!MACH_IS_ATARI) |
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return 0; |
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/* copy string to local array, strsep works destructively... */ |
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strcpy(switches, str); |
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atari_switches = 0; |
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|
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/* parse the options */ |
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while ((p = strsep(&args, ",")) != NULL) { |
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if (!*p) |
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continue; |
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ovsc_shift = 0; |
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if (strncmp(p, "ov_", 3) == 0) { |
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p += 3; |
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ovsc_shift = ATARI_SWITCH_OVSC_SHIFT; |
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} |
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if (strcmp(p, "ikbd") == 0) { |
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/* RTS line of IKBD ACIA */ |
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atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift; |
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} else if (strcmp(p, "midi") == 0) { |
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/* RTS line of MIDI ACIA */ |
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atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift; |
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} else if (strcmp(p, "snd6") == 0) { |
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atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift; |
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} else if (strcmp(p, "snd7") == 0) { |
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atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift; |
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} |
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} |
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return 0; |
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} |
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early_param("switches", atari_switches_setup); |
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/* |
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* Setup the Atari configuration info |
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*/ |
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|
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void __init config_atari(void) |
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{ |
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unsigned short tos_version; |
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|
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memset(&atari_hw_present, 0, sizeof(atari_hw_present)); |
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|
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/* Change size of I/O space from 64KB to 4GB. */ |
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ioport_resource.end = 0xFFFFFFFF; |
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mach_sched_init = atari_sched_init; |
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mach_init_IRQ = atari_init_IRQ; |
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mach_get_model = atari_get_model; |
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mach_get_hardware_list = atari_get_hardware_list; |
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mach_reset = atari_reset; |
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#if IS_ENABLED(CONFIG_INPUT_M68K_BEEP) |
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mach_beep = atari_mksound; |
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#endif |
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#ifdef CONFIG_HEARTBEAT |
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mach_heartbeat = atari_heartbeat; |
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#endif |
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|
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/* Set switches as requested by the user */ |
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if (atari_switches & ATARI_SWITCH_IKBD) |
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acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID; |
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if (atari_switches & ATARI_SWITCH_MIDI) |
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acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; |
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if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) { |
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sound_ym.rd_data_reg_sel = 14; |
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sound_ym.wd_data = sound_ym.rd_data_reg_sel | |
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((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) | |
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((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0); |
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} |
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/* ++bjoern: |
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* Determine hardware present |
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*/ |
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pr_info("Atari hardware found:"); |
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if (MACH_IS_MEDUSA) { |
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/* There's no Atari video hardware on the Medusa, but all the |
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* addresses below generate a DTACK so no bus error occurs! */ |
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} else if (hwreg_present(f030_xreg)) { |
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ATARIHW_SET(VIDEL_SHIFTER); |
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pr_cont(" VIDEL"); |
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/* This is a temporary hack: If there is Falcon video |
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* hardware, we assume that the ST-DMA serves SCSI instead of |
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* ACSI. In the future, there should be a better method for |
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* this... |
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*/ |
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ATARIHW_SET(ST_SCSI); |
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pr_cont(" STDMA-SCSI"); |
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} else if (hwreg_present(tt_palette)) { |
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ATARIHW_SET(TT_SHIFTER); |
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pr_cont(" TT_SHIFTER"); |
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} else if (hwreg_present(&shifter_st.bas_hi)) { |
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if (hwreg_present(&shifter_st.bas_lo) && |
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(shifter_st.bas_lo = 0x0aau, shifter_st.bas_lo == 0x0aau)) { |
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ATARIHW_SET(EXTD_SHIFTER); |
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pr_cont(" EXTD_SHIFTER"); |
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} else { |
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ATARIHW_SET(STND_SHIFTER); |
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pr_cont(" STND_SHIFTER"); |
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} |
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} |
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if (hwreg_present(&st_mfp.par_dt_reg)) { |
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ATARIHW_SET(ST_MFP); |
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pr_cont(" ST_MFP"); |
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} |
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if (hwreg_present(&tt_mfp.par_dt_reg)) { |
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ATARIHW_SET(TT_MFP); |
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pr_cont(" TT_MFP"); |
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} |
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if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) { |
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ATARIHW_SET(SCSI_DMA); |
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pr_cont(" TT_SCSI_DMA"); |
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} |
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/* |
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* The ST-DMA address registers aren't readable |
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* on all Medusas, so the test below may fail |
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*/ |
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if (MACH_IS_MEDUSA || |
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(hwreg_present(&st_dma.dma_vhi) && |
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(st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) && |
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st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa && |
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(st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) && |
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st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) { |
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ATARIHW_SET(EXTD_DMA); |
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pr_cont(" EXTD_DMA"); |
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} |
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if (hwreg_present(&tt_scsi.scsi_data)) { |
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ATARIHW_SET(TT_SCSI); |
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pr_cont(" TT_SCSI"); |
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} |
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if (hwreg_present(&sound_ym.rd_data_reg_sel)) { |
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ATARIHW_SET(YM_2149); |
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pr_cont(" YM2149"); |
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} |
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if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) { |
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ATARIHW_SET(PCM_8BIT); |
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pr_cont(" PCM"); |
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} |
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if (hwreg_present(&falcon_codec.unused5)) { |
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ATARIHW_SET(CODEC); |
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pr_cont(" CODEC"); |
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} |
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if (hwreg_present(&dsp56k_host_interface.icr)) { |
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ATARIHW_SET(DSP56K); |
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pr_cont(" DSP56K"); |
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} |
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if (hwreg_present(&tt_scc_dma.dma_ctrl) && |
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#if 0 |
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/* This test sucks! Who knows some better? */ |
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(tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) && |
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(tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0) |
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#else |
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!MACH_IS_MEDUSA |
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#endif |
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) { |
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ATARIHW_SET(SCC_DMA); |
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pr_cont(" SCC_DMA"); |
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} |
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if (scc_test(&atari_scc.cha_a_ctrl)) { |
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ATARIHW_SET(SCC); |
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pr_cont(" SCC"); |
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} |
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if (scc_test(&st_escc.cha_b_ctrl)) { |
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ATARIHW_SET(ST_ESCC); |
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pr_cont(" ST_ESCC"); |
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} |
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if (hwreg_present(&tt_scu.sys_mask)) { |
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ATARIHW_SET(SCU); |
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/* Assume a VME bus if there's a SCU */ |
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ATARIHW_SET(VME); |
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pr_cont(" VME SCU"); |
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} |
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if (hwreg_present((void *)(0xffff9210))) { |
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ATARIHW_SET(ANALOG_JOY); |
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pr_cont(" ANALOG_JOY"); |
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} |
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if (hwreg_present(blitter.halftone)) { |
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ATARIHW_SET(BLITTER); |
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pr_cont(" BLITTER"); |
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} |
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if (hwreg_present((void *)0xfff00039)) { |
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ATARIHW_SET(IDE); |
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pr_cont(" IDE"); |
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} |
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#if 1 /* This maybe wrong */ |
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if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) && |
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hwreg_present(&tt_microwire.mask) && |
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(tt_microwire.mask = 0x7ff, |
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udelay(1), |
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tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR, |
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udelay(1), |
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tt_microwire.data != 0)) { |
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ATARIHW_SET(MICROWIRE); |
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while (tt_microwire.mask != 0x7ff) |
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; |
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pr_cont(" MICROWIRE"); |
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} |
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#endif |
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if (hwreg_present(&tt_rtc.regsel)) { |
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ATARIHW_SET(TT_CLK); |
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pr_cont(" TT_CLK"); |
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mach_hwclk = atari_tt_hwclk; |
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} |
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if (hwreg_present(&mste_rtc.sec_ones)) { |
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ATARIHW_SET(MSTE_CLK); |
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pr_cont(" MSTE_CLK"); |
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mach_hwclk = atari_mste_hwclk; |
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} |
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if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) && |
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hwreg_write(&dma_wd.fdc_speed, 0)) { |
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ATARIHW_SET(FDCSPEED); |
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pr_cont(" FDC_SPEED"); |
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} |
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if (!ATARIHW_PRESENT(ST_SCSI)) { |
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ATARIHW_SET(ACSI); |
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pr_cont(" ACSI"); |
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} |
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pr_cont("\n"); |
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|
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if (CPU_IS_040_OR_060) |
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/* Now it seems to be safe to turn of the tt0 transparent |
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* translation (the one that must not be turned off in |
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* head.S...) |
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*/ |
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asm volatile ("\n" |
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" moveq #0,%%d0\n" |
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" .chip 68040\n" |
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" movec %%d0,%%itt0\n" |
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" movec %%d0,%%dtt0\n" |
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" .chip 68k" |
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: /* no outputs */ |
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: /* no inputs */ |
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: "d0"); |
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|
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/* allocator for memory that must reside in st-ram */ |
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atari_stram_init(); |
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|
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/* Set up a mapping for the VMEbus address region: |
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* |
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* VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff |
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* (MegaSTE) In both cases, the whole 16 MB chunk is mapped at |
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* 0xfe000000 virt., because this can be done with a single |
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* transparent translation. On the 68040, lots of often unused |
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* page tables would be needed otherwise. On a MegaSTE or similar, |
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* the highest byte is stripped off by hardware due to the 24 bit |
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* design of the bus. |
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*/ |
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|
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if (CPU_IS_020_OR_030) { |
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unsigned long tt1_val; |
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tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache |
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* inhibit, read and write, FDC mask = 3, |
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* FDC val = 4 -> Supervisor only */ |
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asm volatile ("\n" |
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" .chip 68030\n" |
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" pmove %0,%/tt1\n" |
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" .chip 68k" |
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: : "m" (tt1_val)); |
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} else { |
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asm volatile ("\n" |
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" .chip 68040\n" |
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" movec %0,%%itt1\n" |
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" movec %0,%%dtt1\n" |
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" .chip 68k" |
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: |
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: "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable, |
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* supervisor only, non-cacheable/ |
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* serialized, writable */ |
|
|
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} |
|
|
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/* Fetch tos version at Physical 2 */ |
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/* |
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* We my not be able to access this address if the kernel is |
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* loaded to st ram, since the first page is unmapped. On the |
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* Medusa this is always the case and there is nothing we can do |
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* about this, so we just assume the smaller offset. For the TT |
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* we use the fact that in head.S we have set up a mapping |
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* 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible |
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* in the last 16MB of the address space. |
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*/ |
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tos_version = (MACH_IS_MEDUSA) ? |
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0xfff : *(unsigned short *)0xff000002; |
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atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68; |
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} |
|
|
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#ifdef CONFIG_HEARTBEAT |
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static void atari_heartbeat(int on) |
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{ |
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unsigned char tmp; |
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unsigned long flags; |
|
|
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if (atari_dont_touch_floppy_select) |
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return; |
|
|
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local_irq_save(flags); |
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sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */ |
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tmp = sound_ym.rd_data_reg_sel; |
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sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02); |
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local_irq_restore(flags); |
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} |
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#endif |
|
|
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/* ++roman: |
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* |
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* This function does a reset on machines that lack the ability to |
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* assert the processor's _RESET signal somehow via hardware. It is |
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* based on the fact that you can find the initial SP and PC values |
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* after a reset at physical addresses 0 and 4. This works pretty well |
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* for Atari machines, since the lowest 8 bytes of physical memory are |
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* really ROM (mapped by hardware). For other 680x0 machines: don't |
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* know if it works... |
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* |
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* To get the values at addresses 0 and 4, the MMU better is turned |
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* off first. After that, we have to jump into physical address space |
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* (the PC before the pmove statement points to the virtual address of |
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* the code). Getting that physical address is not hard, but the code |
|
* becomes a bit complex since I've tried to ensure that the jump |
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* statement after the pmove is in the cache already (otherwise the |
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* processor can't fetch it!). For that, the code first jumps to the |
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* jump statement with the (virtual) address of the pmove section in |
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* an address register . The jump statement is surely in the cache |
|
* now. After that, that physical address of the reset code is loaded |
|
* into the same address register, pmove is done and the same jump |
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* statements goes to the reset code. Since there are not many |
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* statements between the two jumps, I hope it stays in the cache. |
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* |
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* The C code makes heavy use of the GCC features that you can get the |
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* address of a C label. No hope to compile this with another compiler |
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* than GCC! |
|
*/ |
|
|
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/* ++andreas: no need for complicated code, just depend on prefetch */ |
|
|
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static void atari_reset(void) |
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{ |
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long tc_val = 0; |
|
long reset_addr; |
|
|
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/* |
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* On the Medusa, phys. 0x4 may contain garbage because it's no |
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* ROM. See above for explanation why we cannot use PTOV(4). |
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*/ |
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reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : |
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*(unsigned long *) 0xff000004; |
|
|
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/* reset ACIA for switch off OverScan, if it's active */ |
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if (atari_switches & ATARI_SWITCH_OVSC_IKBD) |
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acia.key_ctrl = ACIA_RESET; |
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if (atari_switches & ATARI_SWITCH_OVSC_MIDI) |
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acia.mid_ctrl = ACIA_RESET; |
|
|
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/* processor independent: turn off interrupts and reset the VBR; |
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* the caches must be left enabled, else prefetching the final jump |
|
* instruction doesn't work. |
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*/ |
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local_irq_disable(); |
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asm volatile ("movec %0,%%vbr" |
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: : "d" (0)); |
|
|
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if (CPU_IS_040_OR_060) { |
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unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040); |
|
if (CPU_IS_060) { |
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/* 68060: clear PCR to turn off superscalar operation */ |
|
asm volatile ("\n" |
|
" .chip 68060\n" |
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" movec %0,%%pcr\n" |
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" .chip 68k" |
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: : "d" (0)); |
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} |
|
|
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asm volatile ("\n" |
|
" move.l %0,%%d0\n" |
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" and.l #0xff000000,%%d0\n" |
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" or.w #0xe020,%%d0\n" /* map 16 MB, enable, cacheable */ |
|
" .chip 68040\n" |
|
" movec %%d0,%%itt0\n" |
|
" movec %%d0,%%dtt0\n" |
|
" .chip 68k\n" |
|
" jmp %0@" |
|
: : "a" (jmp_addr040) |
|
: "d0"); |
|
jmp_addr_label040: |
|
asm volatile ("\n" |
|
" moveq #0,%%d0\n" |
|
" nop\n" |
|
" .chip 68040\n" |
|
" cinva %%bc\n" |
|
" nop\n" |
|
" pflusha\n" |
|
" nop\n" |
|
" movec %%d0,%%tc\n" |
|
" nop\n" |
|
/* the following setup of transparent translations is needed on the |
|
* Afterburner040 to successfully reboot. Other machines shouldn't |
|
* care about a different tt regs setup, they also didn't care in |
|
* the past that the regs weren't turned off. */ |
|
" move.l #0xffc000,%%d0\n" /* whole insn space cacheable */ |
|
" movec %%d0,%%itt0\n" |
|
" movec %%d0,%%itt1\n" |
|
" or.w #0x40,%/d0\n" /* whole data space non-cacheable/ser. */ |
|
" movec %%d0,%%dtt0\n" |
|
" movec %%d0,%%dtt1\n" |
|
" .chip 68k\n" |
|
" jmp %0@" |
|
: /* no outputs */ |
|
: "a" (reset_addr) |
|
: "d0"); |
|
} else |
|
asm volatile ("\n" |
|
" pmove %0,%%tc\n" |
|
" jmp %1@" |
|
: /* no outputs */ |
|
: "m" (tc_val), "a" (reset_addr)); |
|
} |
|
|
|
|
|
static void atari_get_model(char *model) |
|
{ |
|
strcpy(model, "Atari "); |
|
switch (atari_mch_cookie >> 16) { |
|
case ATARI_MCH_ST: |
|
if (ATARIHW_PRESENT(MSTE_CLK)) |
|
strcat(model, "Mega ST"); |
|
else |
|
strcat(model, "ST"); |
|
break; |
|
case ATARI_MCH_STE: |
|
if (MACH_IS_MSTE) |
|
strcat(model, "Mega STE"); |
|
else |
|
strcat(model, "STE"); |
|
break; |
|
case ATARI_MCH_TT: |
|
if (MACH_IS_MEDUSA) |
|
/* Medusa has TT _MCH cookie */ |
|
strcat(model, "Medusa"); |
|
else |
|
strcat(model, "TT"); |
|
break; |
|
case ATARI_MCH_FALCON: |
|
strcat(model, "Falcon"); |
|
if (MACH_IS_AB40) |
|
strcat(model, " (with Afterburner040)"); |
|
break; |
|
default: |
|
sprintf(model + strlen(model), "(unknown mach cookie 0x%lx)", |
|
atari_mch_cookie); |
|
break; |
|
} |
|
} |
|
|
|
|
|
static void atari_get_hardware_list(struct seq_file *m) |
|
{ |
|
int i; |
|
|
|
for (i = 0; i < m68k_num_memory; i++) |
|
seq_printf(m, "\t%3ld MB at 0x%08lx (%s)\n", |
|
m68k_memory[i].size >> 20, m68k_memory[i].addr, |
|
(m68k_memory[i].addr & 0xff000000 ? |
|
"alternate RAM" : "ST-RAM")); |
|
|
|
#define ATARIHW_ANNOUNCE(name, str) \ |
|
if (ATARIHW_PRESENT(name)) \ |
|
seq_printf(m, "\t%s\n", str) |
|
|
|
seq_puts(m, "Detected hardware:\n"); |
|
ATARIHW_ANNOUNCE(STND_SHIFTER, "ST Shifter"); |
|
ATARIHW_ANNOUNCE(EXTD_SHIFTER, "STe Shifter"); |
|
ATARIHW_ANNOUNCE(TT_SHIFTER, "TT Shifter"); |
|
ATARIHW_ANNOUNCE(VIDEL_SHIFTER, "Falcon Shifter"); |
|
ATARIHW_ANNOUNCE(YM_2149, "Programmable Sound Generator"); |
|
ATARIHW_ANNOUNCE(PCM_8BIT, "PCM 8 Bit Sound"); |
|
ATARIHW_ANNOUNCE(CODEC, "CODEC Sound"); |
|
ATARIHW_ANNOUNCE(TT_SCSI, "SCSI Controller NCR5380 (TT style)"); |
|
ATARIHW_ANNOUNCE(ST_SCSI, "SCSI Controller NCR5380 (Falcon style)"); |
|
ATARIHW_ANNOUNCE(ACSI, "ACSI Interface"); |
|
ATARIHW_ANNOUNCE(IDE, "IDE Interface"); |
|
ATARIHW_ANNOUNCE(FDCSPEED, "8/16 Mhz Switch for FDC"); |
|
ATARIHW_ANNOUNCE(ST_MFP, "Multi Function Peripheral MFP 68901"); |
|
ATARIHW_ANNOUNCE(TT_MFP, "Second Multi Function Peripheral MFP 68901"); |
|
ATARIHW_ANNOUNCE(SCC, "Serial Communications Controller SCC 8530"); |
|
ATARIHW_ANNOUNCE(ST_ESCC, "Extended Serial Communications Controller SCC 85230"); |
|
ATARIHW_ANNOUNCE(ANALOG_JOY, "Paddle Interface"); |
|
ATARIHW_ANNOUNCE(MICROWIRE, "MICROWIRE(tm) Interface"); |
|
ATARIHW_ANNOUNCE(STND_DMA, "DMA Controller (24 bit)"); |
|
ATARIHW_ANNOUNCE(EXTD_DMA, "DMA Controller (32 bit)"); |
|
ATARIHW_ANNOUNCE(SCSI_DMA, "DMA Controller for NCR5380"); |
|
ATARIHW_ANNOUNCE(SCC_DMA, "DMA Controller for SCC"); |
|
ATARIHW_ANNOUNCE(TT_CLK, "Clock Chip MC146818A"); |
|
ATARIHW_ANNOUNCE(MSTE_CLK, "Clock Chip RP5C15"); |
|
ATARIHW_ANNOUNCE(SCU, "System Control Unit"); |
|
ATARIHW_ANNOUNCE(BLITTER, "Blitter"); |
|
ATARIHW_ANNOUNCE(VME, "VME Bus"); |
|
ATARIHW_ANNOUNCE(DSP56K, "DSP56001 processor"); |
|
} |
|
|
|
/* |
|
* MSch: initial platform device support for Atari, |
|
* required for EtherNAT/EtherNEC/NetUSBee drivers |
|
*/ |
|
|
|
#if defined(CONFIG_ATARI_ETHERNAT) || defined(CONFIG_ATARI_ETHERNEC) |
|
static void isp1160_delay(struct device *dev, int delay) |
|
{ |
|
ndelay(delay); |
|
} |
|
#endif |
|
|
|
#ifdef CONFIG_ATARI_ETHERNAT |
|
/* |
|
* EtherNAT: SMC91C111 Ethernet chipset, handled by smc91x driver |
|
*/ |
|
|
|
#define ATARI_ETHERNAT_IRQ 140 |
|
|
|
static struct resource smc91x_resources[] = { |
|
[0] = { |
|
.name = "smc91x-regs", |
|
.start = ATARI_ETHERNAT_PHYS_ADDR, |
|
.end = ATARI_ETHERNAT_PHYS_ADDR + 0xfffff, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
[1] = { |
|
.name = "smc91x-irq", |
|
.start = ATARI_ETHERNAT_IRQ, |
|
.end = ATARI_ETHERNAT_IRQ, |
|
.flags = IORESOURCE_IRQ, |
|
}, |
|
}; |
|
|
|
static struct platform_device smc91x_device = { |
|
.name = "smc91x", |
|
.id = -1, |
|
.num_resources = ARRAY_SIZE(smc91x_resources), |
|
.resource = smc91x_resources, |
|
}; |
|
|
|
/* |
|
* ISP 1160 - using the isp116x-hcd module |
|
*/ |
|
|
|
#define ATARI_USB_PHYS_ADDR 0x80000012 |
|
#define ATARI_USB_IRQ 139 |
|
|
|
static struct resource isp1160_resources[] = { |
|
[0] = { |
|
.name = "isp1160-data", |
|
.start = ATARI_USB_PHYS_ADDR, |
|
.end = ATARI_USB_PHYS_ADDR + 0x1, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
[1] = { |
|
.name = "isp1160-regs", |
|
.start = ATARI_USB_PHYS_ADDR + 0x4, |
|
.end = ATARI_USB_PHYS_ADDR + 0x5, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
[2] = { |
|
.name = "isp1160-irq", |
|
.start = ATARI_USB_IRQ, |
|
.end = ATARI_USB_IRQ, |
|
.flags = IORESOURCE_IRQ, |
|
}, |
|
}; |
|
|
|
/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ |
|
static struct isp116x_platform_data isp1160_platform_data = { |
|
/* Enable internal resistors on downstream ports */ |
|
.sel15Kres = 1, |
|
/* On-chip overcurrent protection */ |
|
.oc_enable = 1, |
|
/* INT output polarity */ |
|
.int_act_high = 1, |
|
/* INT edge or level triggered */ |
|
.int_edge_triggered = 0, |
|
|
|
/* WAKEUP pin connected - NOT SUPPORTED */ |
|
/* .remote_wakeup_connected = 0, */ |
|
/* Wakeup by devices on usb bus enabled */ |
|
.remote_wakeup_enable = 0, |
|
.delay = isp1160_delay, |
|
}; |
|
|
|
static struct platform_device isp1160_device = { |
|
.name = "isp116x-hcd", |
|
.id = 0, |
|
.num_resources = ARRAY_SIZE(isp1160_resources), |
|
.resource = isp1160_resources, |
|
.dev = { |
|
.platform_data = &isp1160_platform_data, |
|
}, |
|
}; |
|
|
|
static struct platform_device *atari_ethernat_devices[] __initdata = { |
|
&smc91x_device, |
|
&isp1160_device |
|
}; |
|
#endif /* CONFIG_ATARI_ETHERNAT */ |
|
|
|
#ifdef CONFIG_ATARI_ETHERNEC |
|
/* |
|
* EtherNEC: RTL8019 (NE2000 compatible) Ethernet chipset, |
|
* handled by ne.c driver |
|
*/ |
|
|
|
#define ATARI_ETHERNEC_PHYS_ADDR 0xfffa0000 |
|
#define ATARI_ETHERNEC_BASE 0x300 |
|
#define ATARI_ETHERNEC_IRQ IRQ_MFP_TIMER1 |
|
|
|
static struct resource rtl8019_resources[] = { |
|
[0] = { |
|
.name = "rtl8019-regs", |
|
.start = ATARI_ETHERNEC_BASE, |
|
.end = ATARI_ETHERNEC_BASE + 0x20 - 1, |
|
.flags = IORESOURCE_IO, |
|
}, |
|
[1] = { |
|
.name = "rtl8019-irq", |
|
.start = ATARI_ETHERNEC_IRQ, |
|
.end = ATARI_ETHERNEC_IRQ, |
|
.flags = IORESOURCE_IRQ, |
|
}, |
|
}; |
|
|
|
static struct platform_device rtl8019_device = { |
|
.name = "ne", |
|
.id = -1, |
|
.num_resources = ARRAY_SIZE(rtl8019_resources), |
|
.resource = rtl8019_resources, |
|
}; |
|
|
|
/* |
|
* NetUSBee: ISP1160 USB host adapter via ROM-port adapter |
|
*/ |
|
|
|
#define ATARI_NETUSBEE_PHYS_ADDR 0xfffa8000 |
|
#define ATARI_NETUSBEE_BASE 0x340 |
|
#define ATARI_NETUSBEE_IRQ IRQ_MFP_TIMER2 |
|
|
|
static struct resource netusbee_resources[] = { |
|
[0] = { |
|
.name = "isp1160-data", |
|
.start = ATARI_NETUSBEE_BASE, |
|
.end = ATARI_NETUSBEE_BASE + 0x1, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
[1] = { |
|
.name = "isp1160-regs", |
|
.start = ATARI_NETUSBEE_BASE + 0x20, |
|
.end = ATARI_NETUSBEE_BASE + 0x21, |
|
.flags = IORESOURCE_MEM, |
|
}, |
|
[2] = { |
|
.name = "isp1160-irq", |
|
.start = ATARI_NETUSBEE_IRQ, |
|
.end = ATARI_NETUSBEE_IRQ, |
|
.flags = IORESOURCE_IRQ, |
|
}, |
|
}; |
|
|
|
/* (DataBusWidth16|AnalogOCEnable|DREQOutputPolarity|DownstreamPort15KRSel ) */ |
|
static struct isp116x_platform_data netusbee_platform_data = { |
|
/* Enable internal resistors on downstream ports */ |
|
.sel15Kres = 1, |
|
/* On-chip overcurrent protection */ |
|
.oc_enable = 1, |
|
/* INT output polarity */ |
|
.int_act_high = 1, |
|
/* INT edge or level triggered */ |
|
.int_edge_triggered = 0, |
|
|
|
/* WAKEUP pin connected - NOT SUPPORTED */ |
|
/* .remote_wakeup_connected = 0, */ |
|
/* Wakeup by devices on usb bus enabled */ |
|
.remote_wakeup_enable = 0, |
|
.delay = isp1160_delay, |
|
}; |
|
|
|
static struct platform_device netusbee_device = { |
|
.name = "isp116x-hcd", |
|
.id = 1, |
|
.num_resources = ARRAY_SIZE(netusbee_resources), |
|
.resource = netusbee_resources, |
|
.dev = { |
|
.platform_data = &netusbee_platform_data, |
|
}, |
|
}; |
|
|
|
static struct platform_device *atari_netusbee_devices[] __initdata = { |
|
&rtl8019_device, |
|
&netusbee_device |
|
}; |
|
#endif /* CONFIG_ATARI_ETHERNEC */ |
|
|
|
#if IS_ENABLED(CONFIG_ATARI_SCSI) |
|
static const struct resource atari_scsi_st_rsrc[] __initconst = { |
|
{ |
|
.flags = IORESOURCE_IRQ, |
|
.start = IRQ_MFP_FSCSI, |
|
.end = IRQ_MFP_FSCSI, |
|
}, |
|
}; |
|
|
|
static const struct resource atari_scsi_tt_rsrc[] __initconst = { |
|
{ |
|
.flags = IORESOURCE_IRQ, |
|
.start = IRQ_TT_MFP_SCSI, |
|
.end = IRQ_TT_MFP_SCSI, |
|
}, |
|
}; |
|
#endif |
|
|
|
/* |
|
* Falcon IDE interface |
|
*/ |
|
|
|
#define FALCON_IDE_BASE 0xfff00000 |
|
|
|
static const struct resource atari_falconide_rsrc[] __initconst = { |
|
DEFINE_RES_MEM(FALCON_IDE_BASE, 0x38), |
|
DEFINE_RES_MEM(FALCON_IDE_BASE + 0x38, 2), |
|
}; |
|
|
|
int __init atari_platform_init(void) |
|
{ |
|
struct platform_device *pdev; |
|
int rv = 0; |
|
|
|
if (!MACH_IS_ATARI) |
|
return -ENODEV; |
|
|
|
#ifdef CONFIG_ATARI_ETHERNAT |
|
{ |
|
unsigned char *enatc_virt; |
|
enatc_virt = (unsigned char *)ioremap((ATARI_ETHERNAT_PHYS_ADDR+0x23), 0xf); |
|
if (hwreg_present(enatc_virt)) { |
|
rv = platform_add_devices(atari_ethernat_devices, |
|
ARRAY_SIZE(atari_ethernat_devices)); |
|
} |
|
iounmap(enatc_virt); |
|
} |
|
#endif |
|
|
|
#ifdef CONFIG_ATARI_ETHERNEC |
|
{ |
|
int error; |
|
unsigned char *enec_virt; |
|
enec_virt = (unsigned char *)ioremap((ATARI_ETHERNEC_PHYS_ADDR), 0xf); |
|
if (hwreg_present(enec_virt)) { |
|
error = platform_add_devices(atari_netusbee_devices, |
|
ARRAY_SIZE(atari_netusbee_devices)); |
|
if (error && !rv) |
|
rv = error; |
|
} |
|
iounmap(enec_virt); |
|
} |
|
#endif |
|
|
|
#if IS_ENABLED(CONFIG_ATARI_SCSI) |
|
if (ATARIHW_PRESENT(ST_SCSI)) |
|
platform_device_register_simple("atari_scsi", -1, |
|
atari_scsi_st_rsrc, ARRAY_SIZE(atari_scsi_st_rsrc)); |
|
else if (ATARIHW_PRESENT(TT_SCSI)) |
|
platform_device_register_simple("atari_scsi", -1, |
|
atari_scsi_tt_rsrc, ARRAY_SIZE(atari_scsi_tt_rsrc)); |
|
#endif |
|
|
|
if (ATARIHW_PRESENT(IDE)) { |
|
pdev = platform_device_register_simple("atari-falcon-ide", -1, |
|
atari_falconide_rsrc, ARRAY_SIZE(atari_falconide_rsrc)); |
|
if (IS_ERR(pdev)) |
|
rv = PTR_ERR(pdev); |
|
} |
|
|
|
return rv; |
|
} |
|
|
|
arch_initcall(atari_platform_init);
|
|
|