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tx39.c revision 1.38 
      1 /*	$NetBSD: tx39.c,v 1.38 2007/03/08 07:04:42 he Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1999, 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by UCHIYAMA Yasushi.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: tx39.c,v 1.38 2007/03/08 07:04:42 he Exp $");
     41 
     42 #include "opt_vr41xx.h"
     43 #include "opt_tx39xx.h"
     44 #include "m38813c.h"
     45 #include "tc5165buf.h"
     46 
     47 #include <sys/param.h>
     48 #include <sys/systm.h>
     49 
     50 #include <uvm/uvm_extern.h>
     51 
     52 #include <mips/cache.h>
     53 
     54 #include <machine/locore.h>   /* cpu_id */
     55 #include <machine/bootinfo.h> /* bootinfo */
     56 #include <machine/sysconf.h>  /* platform */
     57 
     58 #include <machine/platid.h>
     59 #include <machine/platid_mask.h>
     60 
     61 #include <machine/bus.h>
     62 
     63 #include <hpcmips/tx/tx39biureg.h>
     64 #include <hpcmips/tx/tx39reg.h>
     65 #include <hpcmips/tx/tx39var.h>
     66 #ifdef TX391X
     67 #include <hpcmips/tx/tx3912videovar.h>
     68 #endif
     69 
     70 #include <sys/termios.h>
     71 #include <sys/ttydefaults.h>
     72 #include <hpcmips/tx/tx39uartvar.h>
     73 #ifndef CONSPEED
     74 #define CONSPEED TTYDEF_SPEED
     75 #endif
     76 
     77 /* console keyboard */
     78 #if NM38813C > 0
     79 #include <hpcmips/dev/m38813cvar.h>
     80 #endif
     81 #if NTC5165BUF > 0
     82 #include <hpcmips/dev/tc5165bufvar.h>
     83 #endif
     84 
     85 struct tx_chipset_tag tx_chipset;
     86 
     87 void	tx_init(void);
     88 #if defined(VR41XX) && defined(TX39XX)
     89 #define	TX_INTR	tx_intr
     90 #else
     91 #define	TX_INTR	cpu_intr	/* locore_mips3 directly call this */
     92 #endif
     93 
     94 extern void TX_INTR(u_int32_t, u_int32_t, u_int32_t, u_int32_t);
     95 
     96 void	tx39clock_cpuspeed(int *, int *);
     97 
     98 /* TX39-specific initialization vector */
     99 void	tx_cons_init(void);
    100 void    tx_fb_init(void **);
    101 void    tx_mem_init(paddr_t);
    102 void	tx_find_dram(paddr_t, paddr_t);
    103 void	tx_reboot(int, char *);
    104 
    105 void
    106 tx_init()
    107 {
    108 	tx_chipset_tag_t tc;
    109 	int model, rev;
    110 	int cpuclock;
    111 
    112 	tc = tx_conf_get_tag();
    113 	/*
    114 	 * Platform Specific Function Hooks
    115 	 */
    116 	platform.cpu_intr	= TX_INTR;
    117 	platform.cpu_idle	= NULL; /* not implemented yet */
    118 	platform.cons_init	= tx_cons_init;
    119 	platform.fb_init	= tx_fb_init;
    120 	platform.mem_init	= tx_mem_init;
    121 	platform.reboot		= tx_reboot;
    122 
    123 
    124 	model = MIPS_PRID_REV(cpu_id);
    125 
    126 	switch (model) {
    127 	default:
    128 		/* Unknown TOSHIBA TX39-series */
    129 		sprintf(cpu_name, "Unknown TOSHIBA TX39-series %x", model);
    130 		break;
    131 	case TMPR3912:
    132 		tx39clock_cpuspeed(&cpuclock, &cpuspeed);
    133 
    134 		sprintf(cpu_name, "TOSHIBA TMPR3912 %d.%02d MHz",
    135 		    cpuclock / 1000000, (cpuclock % 1000000) / 10000);
    136 		tc->tc_chipset = __TX391X;
    137 		break;
    138 	case TMPR3922:
    139 		tx39clock_cpuspeed(&cpuclock, &cpuspeed);
    140 		rev = tx_conf_read(tc, TX3922_REVISION_REG);
    141 
    142 		sprintf(cpu_name, "TOSHIBA TMPR3922 rev. %x.%x "
    143 		    "%d.%02d MHz", (rev >> 4) & 0xf, rev & 0xf,
    144 		    cpuclock / 1000000, (cpuclock % 1000000) / 10000);
    145 		tc->tc_chipset = __TX392X;
    146 		break;
    147 	}
    148 }
    149 
    150 void
    151 tx_fb_init(void **kernend)
    152 {
    153 #ifdef TX391X
    154 	paddr_t fb_end;
    155 
    156 	fb_end = MIPS_KSEG0_TO_PHYS(mem_clusters[0].start +
    157 	    mem_clusters[0].size - 1);
    158 	tx3912video_init(MIPS_KSEG0_TO_PHYS(*kernend), &fb_end);
    159 
    160 	/* Skip V-RAM area */
    161 	*kernend = (void *)MIPS_PHYS_TO_KSEG0(fb_end);
    162 #endif /* TX391X */
    163 #ifdef TX392X
    164 	/*
    165 	 *  Plum V-RAM isn't accessible until pmap_bootstrap,
    166 	 * at this time, frame buffer device is disabled.
    167 	 */
    168 	bootinfo->fb_addr = 0;
    169 #endif /* TX392X */
    170 }
    171 
    172 void
    173 tx_mem_init(paddr_t kernend)
    174 {
    175 
    176 	mem_clusters[0].start = 0;
    177 	mem_clusters[0].size = kernend;
    178 	mem_cluster_cnt = 1;
    179 	/* search DRAM bank 0 */
    180 	tx_find_dram(kernend, 0x02000000);
    181 
    182 	/* search DRAM bank 1 */
    183 	tx_find_dram(0x02000000, 0x04000000);
    184 }
    185 
    186 void
    187 tx_find_dram(paddr_t start, paddr_t end)
    188 {
    189 	char *page, *startaddr, *endaddr;
    190 	u_int32_t magic0, magic1;
    191 #define MAGIC0		(*(volatile u_int32_t *)(page + 0))
    192 #define MAGIC1		(*(volatile u_int32_t *)(page + 4))
    193 
    194 	startaddr = (char *)MIPS_PHYS_TO_KSEG1(start);
    195 	endaddr = (char *)MIPS_PHYS_TO_KSEG1(end);
    196 
    197 	page = startaddr;
    198 	if (badaddr(page, 4))
    199 		return;
    200 
    201 	do {
    202 		magic0 = random();
    203 		magic1 = random();
    204 	} while (MAGIC0 == magic0 || MAGIC0 == magic1);
    205 
    206 	MAGIC0 = magic0;
    207 	MAGIC1 = magic1;
    208 	wbflush();
    209 
    210 	if (MAGIC0 != magic0 || MAGIC1 != magic1)
    211 		return;
    212 
    213 	for (page += PAGE_SIZE; page < endaddr; page += PAGE_SIZE) {
    214 		if (badaddr(page, 4))
    215 			return;
    216 		if (MAGIC0 == magic0 &&
    217 		    MAGIC1 == magic1) {
    218 			goto memend_found;
    219 		}
    220 	}
    221 
    222 	/* check for 32MByte memory */
    223 	page -= PAGE_SIZE;
    224 	MAGIC0 = magic0;
    225 	MAGIC1 = magic1;
    226 	wbflush();
    227 	if (MAGIC0 != magic0 || MAGIC1 != magic1)
    228 		return; /* no memory in this bank */
    229 
    230  memend_found:
    231 	mem_clusters[mem_cluster_cnt].start = start;
    232 	mem_clusters[mem_cluster_cnt].size = page - startaddr;
    233 
    234 	/* skip kernel area */
    235 	if (mem_cluster_cnt == 1)
    236 		mem_clusters[mem_cluster_cnt].size -= start;
    237 
    238 	mem_cluster_cnt++;
    239 #undef MAGIC0
    240 #undef MAGIC1
    241 }
    242 
    243 void
    244 tx_reboot(int howto, char *bootstr)
    245 {
    246 
    247 	goto *(u_int32_t *)MIPS_RESET_EXC_VEC;
    248 }
    249 
    250 void
    251 tx_cons_init()
    252 {
    253 	int slot;
    254 #define CONSPLATIDMATCH(p)						\
    255 	platid_match(&platid, &platid_mask_MACH_##p)
    256 
    257 #ifdef SERIALCONSSLOT
    258 	slot = SERIALCONSSLOT;
    259 #else
    260 	slot = TX39_UARTA;
    261 #endif
    262 	if (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) {
    263 		if(txcom_cnattach(slot, CONSPEED,
    264 		    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
    265 			panic("tx_cons_init: can't attach serial console.");
    266 		}
    267 	} else {
    268 #if NM38813C > 0
    269 		if(CONSPLATIDMATCH(VICTOR_INTERLINK) &&
    270 		    m38813c_cnattach(TX39_SYSADDR_CARD1)) {
    271 			goto panic;
    272 		}
    273 #endif
    274 #if NTC5165BUF > 0
    275 		if(CONSPLATIDMATCH(COMPAQ_C) &&
    276 		    tc5165buf_cnattach(TX39_SYSADDR_CS3)) {
    277 			goto panic;
    278 		}
    279 
    280 		if(CONSPLATIDMATCH(SHARP_TELIOS) &&
    281 		    tc5165buf_cnattach(TX39_SYSADDR_CS1)) {
    282 			goto panic;
    283 		}
    284 
    285 		if(CONSPLATIDMATCH(SHARP_MOBILON) &&
    286 		    tc5165buf_cnattach(TX39_SYSADDR_MCS0)) {
    287 			goto panic;
    288 		}
    289 #endif
    290 	}
    291 
    292 	return;
    293  panic:
    294 	panic("tx_cons_init: can't init console");
    295 	/* NOTREACHED */
    296 }
    297 
    298 void
    299 tx_conf_register_intr(tx_chipset_tag_t t, void *intrt)
    300 {
    301 
    302 	KASSERT(t == &tx_chipset);
    303 	tx_chipset.tc_intrt = intrt;
    304 }
    305 
    306 void
    307 tx_conf_register_power(tx_chipset_tag_t t, void *powert)
    308 {
    309 
    310 	KASSERT(t == &tx_chipset);
    311 	tx_chipset.tc_powert = powert;
    312 }
    313 
    314 void
    315 tx_conf_register_clock(tx_chipset_tag_t t, void *clockt)
    316 {
    317 
    318 	KASSERT(t == &tx_chipset);
    319 	tx_chipset.tc_clockt = clockt;
    320 }
    321 
    322 void
    323 tx_conf_register_sound(tx_chipset_tag_t t, void *soundt)
    324 {
    325 
    326 	KASSERT(t == &tx_chipset);
    327 	tx_chipset.tc_soundt = soundt;
    328 }
    329 
    330 void
    331 tx_conf_register_video(tx_chipset_tag_t t, void *videot)
    332 {
    333 
    334 	KASSERT(t == &tx_chipset);
    335 	tx_chipset.tc_videot = videot;
    336 }
    337