diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/m68k/atari/config.c')
| -rw-r--r-- | ANDROID_3.4.5/arch/m68k/atari/config.c | 657 |
1 files changed, 0 insertions, 657 deletions
diff --git a/ANDROID_3.4.5/arch/m68k/atari/config.c b/ANDROID_3.4.5/arch/m68k/atari/config.c deleted file mode 100644 index d8eb3274..00000000 --- a/ANDROID_3.4.5/arch/m68k/atari/config.c +++ /dev/null @@ -1,657 +0,0 @@ -/* - * linux/arch/m68k/atari/config.c - * - * Copyright (C) 1994 Bjoern Brauel - * - * 5/2/94 Roman Hodek: - * Added setting of time_adj to get a better clock. - * - * 5/14/94 Roman Hodek: - * gettod() for TT - * - * 5/15/94 Roman Hodek: - * hard_reset_now() for Atari (and others?) - * - * 94/12/30 Andreas Schwab: - * atari_sched_init fixed to get precise clock. - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file COPYING in the main directory of this archive - * for more details. - */ - -/* - * Miscellaneous atari stuff - */ - -#include <linux/types.h> -#include <linux/mm.h> -#include <linux/seq_file.h> -#include <linux/console.h> -#include <linux/init.h> -#include <linux/delay.h> -#include <linux/ioport.h> -#include <linux/vt_kern.h> -#include <linux/module.h> - -#include <asm/bootinfo.h> -#include <asm/setup.h> -#include <asm/atarihw.h> -#include <asm/atariints.h> -#include <asm/atari_stram.h> -#include <asm/machdep.h> -#include <asm/hwtest.h> -#include <asm/io.h> - -u_long atari_mch_cookie; -EXPORT_SYMBOL(atari_mch_cookie); - -u_long atari_mch_type; -EXPORT_SYMBOL(atari_mch_type); - -struct atari_hw_present atari_hw_present; -EXPORT_SYMBOL(atari_hw_present); - -u_long atari_switches; -EXPORT_SYMBOL(atari_switches); - -int atari_dont_touch_floppy_select; -EXPORT_SYMBOL(atari_dont_touch_floppy_select); - -int atari_rtc_year_offset; - -/* local function prototypes */ -static void atari_reset(void); -static void atari_get_model(char *model); -static void atari_get_hardware_list(struct seq_file *m); - -/* atari specific irq functions */ -extern void atari_init_IRQ (void); -extern void atari_mksound(unsigned int count, unsigned int ticks); -#ifdef CONFIG_HEARTBEAT -static void atari_heartbeat(int on); -#endif - -/* atari specific timer functions (in time.c) */ -extern void atari_sched_init(irq_handler_t); -extern unsigned long atari_gettimeoffset (void); -extern int atari_mste_hwclk (int, struct rtc_time *); -extern int atari_tt_hwclk (int, struct rtc_time *); -extern int atari_mste_set_clock_mmss (unsigned long); -extern int atari_tt_set_clock_mmss (unsigned long); - - -/* ++roman: This is a more elaborate test for an SCC chip, since the plain - * Medusa board generates DTACK at the SCC's standard addresses, but a SCC - * board in the Medusa is possible. Also, the addresses where the ST_ESCC - * resides generate DTACK without the chip, too. - * The method is to write values into the interrupt vector register, that - * should be readable without trouble (from channel A!). - */ - -static int __init scc_test(volatile char *ctla) -{ - if (!hwreg_present(ctla)) - return 0; - MFPDELAY(); - - *ctla = 2; - MFPDELAY(); - *ctla = 0x40; - MFPDELAY(); - - *ctla = 2; - MFPDELAY(); - if (*ctla != 0x40) - return 0; - MFPDELAY(); - - *ctla = 2; - MFPDELAY(); - *ctla = 0x60; - MFPDELAY(); - - *ctla = 2; - MFPDELAY(); - if (*ctla != 0x60) - return 0; - - return 1; -} - - - /* - * Parse an Atari-specific record in the bootinfo - */ - -int __init atari_parse_bootinfo(const struct bi_record *record) -{ - int unknown = 0; - const u_long *data = record->data; - - switch (record->tag) { - case BI_ATARI_MCH_COOKIE: - atari_mch_cookie = *data; - break; - case BI_ATARI_MCH_TYPE: - atari_mch_type = *data; - break; - default: - unknown = 1; - break; - } - return unknown; -} - - -/* Parse the Atari-specific switches= option. */ -static int __init atari_switches_setup(char *str) -{ - char switches[strlen(str) + 1]; - char *p; - int ovsc_shift; - char *args = switches; - - if (!MACH_IS_ATARI) - return 0; - - /* copy string to local array, strsep works destructively... */ - strcpy(switches, str); - atari_switches = 0; - - /* parse the options */ - while ((p = strsep(&args, ",")) != NULL) { - if (!*p) - continue; - ovsc_shift = 0; - if (strncmp(p, "ov_", 3) == 0) { - p += 3; - ovsc_shift = ATARI_SWITCH_OVSC_SHIFT; - } - - if (strcmp(p, "ikbd") == 0) { - /* RTS line of IKBD ACIA */ - atari_switches |= ATARI_SWITCH_IKBD << ovsc_shift; - } else if (strcmp(p, "midi") == 0) { - /* RTS line of MIDI ACIA */ - atari_switches |= ATARI_SWITCH_MIDI << ovsc_shift; - } else if (strcmp(p, "snd6") == 0) { - atari_switches |= ATARI_SWITCH_SND6 << ovsc_shift; - } else if (strcmp(p, "snd7") == 0) { - atari_switches |= ATARI_SWITCH_SND7 << ovsc_shift; - } - } - return 0; -} - -early_param("switches", atari_switches_setup); - - - /* - * Setup the Atari configuration info - */ - -void __init config_atari(void) -{ - unsigned short tos_version; - - memset(&atari_hw_present, 0, sizeof(atari_hw_present)); - - /* Change size of I/O space from 64KB to 4GB. */ - ioport_resource.end = 0xFFFFFFFF; - - mach_sched_init = atari_sched_init; - mach_init_IRQ = atari_init_IRQ; - mach_get_model = atari_get_model; - mach_get_hardware_list = atari_get_hardware_list; - mach_gettimeoffset = atari_gettimeoffset; - mach_reset = atari_reset; - mach_max_dma_address = 0xffffff; -#if defined(CONFIG_INPUT_M68K_BEEP) || defined(CONFIG_INPUT_M68K_BEEP_MODULE) - mach_beep = atari_mksound; -#endif -#ifdef CONFIG_HEARTBEAT - mach_heartbeat = atari_heartbeat; -#endif - - /* Set switches as requested by the user */ - if (atari_switches & ATARI_SWITCH_IKBD) - acia.key_ctrl = ACIA_DIV64 | ACIA_D8N1S | ACIA_RHTID; - if (atari_switches & ATARI_SWITCH_MIDI) - acia.mid_ctrl = ACIA_DIV16 | ACIA_D8N1S | ACIA_RHTID; - if (atari_switches & (ATARI_SWITCH_SND6|ATARI_SWITCH_SND7)) { - sound_ym.rd_data_reg_sel = 14; - sound_ym.wd_data = sound_ym.rd_data_reg_sel | - ((atari_switches&ATARI_SWITCH_SND6) ? 0x40 : 0) | - ((atari_switches&ATARI_SWITCH_SND7) ? 0x80 : 0); - } - - /* ++bjoern: - * Determine hardware present - */ - - printk("Atari hardware found: "); - if (MACH_IS_MEDUSA) { - /* There's no Atari video hardware on the Medusa, but all the - * addresses below generate a DTACK so no bus error occurs! */ - } else if (hwreg_present(f030_xreg)) { - ATARIHW_SET(VIDEL_SHIFTER); - printk("VIDEL "); - /* This is a temporary hack: If there is Falcon video - * hardware, we assume that the ST-DMA serves SCSI instead of - * ACSI. In the future, there should be a better method for - * this... - */ - ATARIHW_SET(ST_SCSI); - printk("STDMA-SCSI "); - } else if (hwreg_present(tt_palette)) { - ATARIHW_SET(TT_SHIFTER); - printk("TT_SHIFTER "); - } else if (hwreg_present(&shifter.bas_hi)) { - if (hwreg_present(&shifter.bas_lo) && - (shifter.bas_lo = 0x0aau, shifter.bas_lo == 0x0aau)) { - ATARIHW_SET(EXTD_SHIFTER); - printk("EXTD_SHIFTER "); - } else { - ATARIHW_SET(STND_SHIFTER); - printk("STND_SHIFTER "); - } - } - if (hwreg_present(&st_mfp.par_dt_reg)) { - ATARIHW_SET(ST_MFP); - printk("ST_MFP "); - } - if (hwreg_present(&tt_mfp.par_dt_reg)) { - ATARIHW_SET(TT_MFP); - printk("TT_MFP "); - } - if (hwreg_present(&tt_scsi_dma.dma_addr_hi)) { - ATARIHW_SET(SCSI_DMA); - printk("TT_SCSI_DMA "); - } - /* - * The ST-DMA address registers aren't readable - * on all Medusas, so the test below may fail - */ - if (MACH_IS_MEDUSA || - (hwreg_present(&st_dma.dma_vhi) && - (st_dma.dma_vhi = 0x55) && (st_dma.dma_hi = 0xaa) && - st_dma.dma_vhi == 0x55 && st_dma.dma_hi == 0xaa && - (st_dma.dma_vhi = 0xaa) && (st_dma.dma_hi = 0x55) && - st_dma.dma_vhi == 0xaa && st_dma.dma_hi == 0x55)) { - ATARIHW_SET(EXTD_DMA); - printk("EXTD_DMA "); - } - if (hwreg_present(&tt_scsi.scsi_data)) { - ATARIHW_SET(TT_SCSI); - printk("TT_SCSI "); - } - if (hwreg_present(&sound_ym.rd_data_reg_sel)) { - ATARIHW_SET(YM_2149); - printk("YM2149 "); - } - if (!MACH_IS_MEDUSA && hwreg_present(&tt_dmasnd.ctrl)) { - ATARIHW_SET(PCM_8BIT); - printk("PCM "); - } - if (hwreg_present(&falcon_codec.unused5)) { - ATARIHW_SET(CODEC); - printk("CODEC "); - } - if (hwreg_present(&dsp56k_host_interface.icr)) { - ATARIHW_SET(DSP56K); - printk("DSP56K "); - } - if (hwreg_present(&tt_scc_dma.dma_ctrl) && -#if 0 - /* This test sucks! Who knows some better? */ - (tt_scc_dma.dma_ctrl = 0x01, (tt_scc_dma.dma_ctrl & 1) == 1) && - (tt_scc_dma.dma_ctrl = 0x00, (tt_scc_dma.dma_ctrl & 1) == 0) -#else - !MACH_IS_MEDUSA -#endif - ) { - ATARIHW_SET(SCC_DMA); - printk("SCC_DMA "); - } - if (scc_test(&atari_scc.cha_a_ctrl)) { - ATARIHW_SET(SCC); - printk("SCC "); - } - if (scc_test(&st_escc.cha_b_ctrl)) { - ATARIHW_SET(ST_ESCC); - printk("ST_ESCC "); - } - if (hwreg_present(&tt_scu.sys_mask)) { - ATARIHW_SET(SCU); - /* Assume a VME bus if there's a SCU */ - ATARIHW_SET(VME); - printk("VME SCU "); - } - if (hwreg_present((void *)(0xffff9210))) { - ATARIHW_SET(ANALOG_JOY); - printk("ANALOG_JOY "); - } - if (hwreg_present(blitter.halftone)) { - ATARIHW_SET(BLITTER); - printk("BLITTER "); - } - if (hwreg_present((void *)0xfff00039)) { - ATARIHW_SET(IDE); - printk("IDE "); - } -#if 1 /* This maybe wrong */ - if (!MACH_IS_MEDUSA && hwreg_present(&tt_microwire.data) && - hwreg_present(&tt_microwire.mask) && - (tt_microwire.mask = 0x7ff, - udelay(1), - tt_microwire.data = MW_LM1992_PSG_HIGH | MW_LM1992_ADDR, - udelay(1), - tt_microwire.data != 0)) { - ATARIHW_SET(MICROWIRE); - while (tt_microwire.mask != 0x7ff) - ; - printk("MICROWIRE "); - } -#endif - if (hwreg_present(&tt_rtc.regsel)) { - ATARIHW_SET(TT_CLK); - printk("TT_CLK "); - mach_hwclk = atari_tt_hwclk; - mach_set_clock_mmss = atari_tt_set_clock_mmss; - } - if (hwreg_present(&mste_rtc.sec_ones)) { - ATARIHW_SET(MSTE_CLK); - printk("MSTE_CLK "); - mach_hwclk = atari_mste_hwclk; - mach_set_clock_mmss = atari_mste_set_clock_mmss; - } - if (!MACH_IS_MEDUSA && hwreg_present(&dma_wd.fdc_speed) && - hwreg_write(&dma_wd.fdc_speed, 0)) { - ATARIHW_SET(FDCSPEED); - printk("FDC_SPEED "); - } - if (!ATARIHW_PRESENT(ST_SCSI)) { - ATARIHW_SET(ACSI); - printk("ACSI "); - } - printk("\n"); - - if (CPU_IS_040_OR_060) - /* Now it seems to be safe to turn of the tt0 transparent - * translation (the one that must not be turned off in - * head.S...) - */ - asm volatile ("\n" - " moveq #0,%%d0\n" - " .chip 68040\n" - " movec %%d0,%%itt0\n" - " movec %%d0,%%dtt0\n" - " .chip 68k" - : /* no outputs */ - : /* no inputs */ - : "d0"); - - /* allocator for memory that must reside in st-ram */ - atari_stram_init(); - - /* Set up a mapping for the VMEbus address region: - * - * VME is either at phys. 0xfexxxxxx (TT) or 0xa00000..0xdfffff - * (MegaSTE) In both cases, the whole 16 MB chunk is mapped at - * 0xfe000000 virt., because this can be done with a single - * transparent translation. On the 68040, lots of often unused - * page tables would be needed otherwise. On a MegaSTE or similar, - * the highest byte is stripped off by hardware due to the 24 bit - * design of the bus. - */ - - if (CPU_IS_020_OR_030) { - unsigned long tt1_val; - tt1_val = 0xfe008543; /* Translate 0xfexxxxxx, enable, cache - * inhibit, read and write, FDC mask = 3, - * FDC val = 4 -> Supervisor only */ - asm volatile ("\n" - " .chip 68030\n" - " pmove %0,%/tt1\n" - " .chip 68k" - : : "m" (tt1_val)); - } else { - asm volatile ("\n" - " .chip 68040\n" - " movec %0,%%itt1\n" - " movec %0,%%dtt1\n" - " .chip 68k" - : - : "d" (0xfe00a040)); /* Translate 0xfexxxxxx, enable, - * supervisor only, non-cacheable/ - * serialized, writable */ - - } - - /* Fetch tos version at Physical 2 */ - /* - * We my not be able to access this address if the kernel is - * loaded to st ram, since the first page is unmapped. On the - * Medusa this is always the case and there is nothing we can do - * about this, so we just assume the smaller offset. For the TT - * we use the fact that in head.S we have set up a mapping - * 0xFFxxxxxx -> 0x00xxxxxx, so that the first 16MB is accessible - * in the last 16MB of the address space. - */ - tos_version = (MACH_IS_MEDUSA) ? - 0xfff : *(unsigned short *)0xff000002; - atari_rtc_year_offset = (tos_version < 0x306) ? 70 : 68; -} - -#ifdef CONFIG_HEARTBEAT -static void atari_heartbeat(int on) -{ - unsigned char tmp; - unsigned long flags; - - if (atari_dont_touch_floppy_select) - return; - - local_irq_save(flags); - sound_ym.rd_data_reg_sel = 14; /* Select PSG Port A */ - tmp = sound_ym.rd_data_reg_sel; - sound_ym.wd_data = on ? (tmp & ~0x02) : (tmp | 0x02); - local_irq_restore(flags); -} -#endif - -/* ++roman: - * - * This function does a reset on machines that lack the ability to - * assert the processor's _RESET signal somehow via hardware. It is - * based on the fact that you can find the initial SP and PC values - * after a reset at physical addresses 0 and 4. This works pretty well - * for Atari machines, since the lowest 8 bytes of physical memory are - * really ROM (mapped by hardware). For other 680x0 machines: don't - * know if it works... - * - * To get the values at addresses 0 and 4, the MMU better is turned - * off first. After that, we have to jump into physical address space - * (the PC before the pmove statement points to the virtual address of - * 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 - * statement after the pmove is in the cache already (otherwise the - * processor can't fetch it!). For that, the code first jumps to the - * jump statement with the (virtual) address of the pmove section in - * 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 - * statements goes to the reset code. Since there are not many - * statements between the two jumps, I hope it stays in the cache. - * - * The C code makes heavy use of the GCC features that you can get the - * address of a C label. No hope to compile this with another compiler - * than GCC! - */ - -/* ++andreas: no need for complicated code, just depend on prefetch */ - -static void atari_reset(void) -{ - long tc_val = 0; - long reset_addr; - - /* - * On the Medusa, phys. 0x4 may contain garbage because it's no - * ROM. See above for explanation why we cannot use PTOV(4). - */ - reset_addr = MACH_IS_MEDUSA || MACH_IS_AB40 ? 0xe00030 : - *(unsigned long *) 0xff000004; - - /* reset ACIA for switch off OverScan, if it's active */ - if (atari_switches & ATARI_SWITCH_OVSC_IKBD) - acia.key_ctrl = ACIA_RESET; - if (atari_switches & ATARI_SWITCH_OVSC_MIDI) - acia.mid_ctrl = ACIA_RESET; - - /* processor independent: turn off interrupts and reset the VBR; - * the caches must be left enabled, else prefetching the final jump - * instruction doesn't work. - */ - local_irq_disable(); - asm volatile ("movec %0,%%vbr" - : : "d" (0)); - - if (CPU_IS_040_OR_060) { - unsigned long jmp_addr040 = virt_to_phys(&&jmp_addr_label040); - if (CPU_IS_060) { - /* 68060: clear PCR to turn off superscalar operation */ - asm volatile ("\n" - " .chip 68060\n" - " movec %0,%%pcr\n" - " .chip 68k" - : : "d" (0)); - } - - asm volatile ("\n" - " move.l %0,%%d0\n" - " and.l #0xff000000,%%d0\n" - " 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_printf(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"); -} |