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tx39.c revision 1.40 
      1 /*	$NetBSD: tx39.c,v 1.40 2009/03/18 10:22:29 cegger 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  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: tx39.c,v 1.40 2009/03/18 10:22:29 cegger Exp $");
     34 
     35 #include "opt_vr41xx.h"
     36 #include "opt_tx39xx.h"
     37 #include "m38813c.h"
     38 #include "tc5165buf.h"
     39 
     40 #include <sys/param.h>
     41 #include <sys/systm.h>
     42 
     43 #include <uvm/uvm_extern.h>
     44 
     45 #include <mips/cache.h>
     46 
     47 #include <machine/locore.h>   /* cpu_id */
     48 #include <machine/bootinfo.h> /* bootinfo */
     49 #include <machine/sysconf.h>  /* platform */
     50 
     51 #include <machine/platid.h>
     52 #include <machine/platid_mask.h>
     53 
     54 #include <machine/bus.h>
     55 
     56 #include <hpcmips/tx/tx39biureg.h>
     57 #include <hpcmips/tx/tx39reg.h>
     58 #include <hpcmips/tx/tx39var.h>
     59 #ifdef TX391X
     60 #include <hpcmips/tx/tx3912videovar.h>
     61 #endif
     62 
     63 #include <sys/termios.h>
     64 #include <sys/ttydefaults.h>
     65 #include <hpcmips/tx/tx39uartvar.h>
     66 #ifndef CONSPEED
     67 #define CONSPEED TTYDEF_SPEED
     68 #endif
     69 
     70 /* console keyboard */
     71 #if NM38813C > 0
     72 #include <hpcmips/dev/m38813cvar.h>
     73 #endif
     74 #if NTC5165BUF > 0
     75 #include <hpcmips/dev/tc5165bufvar.h>
     76 #endif
     77 
     78 struct tx_chipset_tag tx_chipset;
     79 
     80 void	tx_init(void);
     81 #if defined(VR41XX) && defined(TX39XX)
     82 #define	TX_INTR	tx_intr
     83 #else
     84 #define	TX_INTR	cpu_intr	/* locore_mips3 directly call this */
     85 #endif
     86 
     87 extern void TX_INTR(u_int32_t, u_int32_t, u_int32_t, u_int32_t);
     88 
     89 void	tx39clock_cpuspeed(int *, int *);
     90 
     91 /* TX39-specific initialization vector */
     92 void	tx_cons_init(void);
     93 void    tx_fb_init(void **);
     94 void    tx_mem_init(paddr_t);
     95 void	tx_find_dram(paddr_t, paddr_t);
     96 void	tx_reboot(int, char *);
     97 
     98 void
     99 tx_init(void)
    100 {
    101 	tx_chipset_tag_t tc;
    102 	int model, rev;
    103 	int cpuclock;
    104 
    105 	tc = tx_conf_get_tag();
    106 	/*
    107 	 * Platform Specific Function Hooks
    108 	 */
    109 	platform.cpu_intr	= TX_INTR;
    110 	platform.cpu_idle	= NULL; /* not implemented yet */
    111 	platform.cons_init	= tx_cons_init;
    112 	platform.fb_init	= tx_fb_init;
    113 	platform.mem_init	= tx_mem_init;
    114 	platform.reboot		= tx_reboot;
    115 
    116 
    117 	model = MIPS_PRID_REV(cpu_id);
    118 
    119 	switch (model) {
    120 	default:
    121 		/* Unknown TOSHIBA TX39-series */
    122 		sprintf(cpu_name, "Unknown TOSHIBA TX39-series %x", model);
    123 		break;
    124 	case TMPR3912:
    125 		tx39clock_cpuspeed(&cpuclock, &cpuspeed);
    126 
    127 		sprintf(cpu_name, "TOSHIBA TMPR3912 %d.%02d MHz",
    128 		    cpuclock / 1000000, (cpuclock % 1000000) / 10000);
    129 		tc->tc_chipset = __TX391X;
    130 		break;
    131 	case TMPR3922:
    132 		tx39clock_cpuspeed(&cpuclock, &cpuspeed);
    133 		rev = tx_conf_read(tc, TX3922_REVISION_REG);
    134 
    135 		sprintf(cpu_name, "TOSHIBA TMPR3922 rev. %x.%x "
    136 		    "%d.%02d MHz", (rev >> 4) & 0xf, rev & 0xf,
    137 		    cpuclock / 1000000, (cpuclock % 1000000) / 10000);
    138 		tc->tc_chipset = __TX392X;
    139 		break;
    140 	}
    141 }
    142 
    143 void
    144 tx_fb_init(void **kernend)
    145 {
    146 #ifdef TX391X
    147 	paddr_t fb_end;
    148 
    149 	fb_end = MIPS_KSEG0_TO_PHYS(mem_clusters[0].start +
    150 	    mem_clusters[0].size - 1);
    151 	tx3912video_init(MIPS_KSEG0_TO_PHYS(*kernend), &fb_end);
    152 
    153 	/* Skip V-RAM area */
    154 	*kernend = (void *)MIPS_PHYS_TO_KSEG0(fb_end);
    155 #endif /* TX391X */
    156 #ifdef TX392X
    157 	/*
    158 	 *  Plum V-RAM isn't accessible until pmap_bootstrap,
    159 	 * at this time, frame buffer device is disabled.
    160 	 */
    161 	bootinfo->fb_addr = 0;
    162 #endif /* TX392X */
    163 }
    164 
    165 void
    166 tx_mem_init(paddr_t kernend)
    167 {
    168 
    169 	mem_clusters[0].start = 0;
    170 	mem_clusters[0].size = kernend;
    171 	mem_cluster_cnt = 1;
    172 	/* search DRAM bank 0 */
    173 	tx_find_dram(kernend, 0x02000000);
    174 
    175 	/* search DRAM bank 1 */
    176 	tx_find_dram(0x02000000, 0x04000000);
    177 }
    178 
    179 void
    180 tx_find_dram(paddr_t start, paddr_t end)
    181 {
    182 	char *page, *startaddr, *endaddr;
    183 	u_int32_t magic0, magic1;
    184 #define MAGIC0		(*(volatile u_int32_t *)(page + 0))
    185 #define MAGIC1		(*(volatile u_int32_t *)(page + 4))
    186 
    187 	startaddr = (char *)MIPS_PHYS_TO_KSEG1(start);
    188 	endaddr = (char *)MIPS_PHYS_TO_KSEG1(end);
    189 
    190 	page = startaddr;
    191 	if (badaddr(page, 4))
    192 		return;
    193 
    194 	do {
    195 		magic0 = random();
    196 		magic1 = random();
    197 	} while (MAGIC0 == magic0 || MAGIC0 == magic1);
    198 
    199 	MAGIC0 = magic0;
    200 	MAGIC1 = magic1;
    201 	wbflush();
    202 
    203 	if (MAGIC0 != magic0 || MAGIC1 != magic1)
    204 		return;
    205 
    206 	for (page += PAGE_SIZE; page < endaddr; page += PAGE_SIZE) {
    207 		if (badaddr(page, 4))
    208 			return;
    209 		if (MAGIC0 == magic0 &&
    210 		    MAGIC1 == magic1) {
    211 			goto memend_found;
    212 		}
    213 	}
    214 
    215 	/* check for 32MByte memory */
    216 	page -= PAGE_SIZE;
    217 	MAGIC0 = magic0;
    218 	MAGIC1 = magic1;
    219 	wbflush();
    220 	if (MAGIC0 != magic0 || MAGIC1 != magic1)
    221 		return; /* no memory in this bank */
    222 
    223  memend_found:
    224 	mem_clusters[mem_cluster_cnt].start = start;
    225 	mem_clusters[mem_cluster_cnt].size = page - startaddr;
    226 
    227 	/* skip kernel area */
    228 	if (mem_cluster_cnt == 1)
    229 		mem_clusters[mem_cluster_cnt].size -= start;
    230 
    231 	mem_cluster_cnt++;
    232 #undef MAGIC0
    233 #undef MAGIC1
    234 }
    235 
    236 void
    237 tx_reboot(int howto, char *bootstr)
    238 {
    239 
    240 	goto *(u_int32_t *)MIPS_RESET_EXC_VEC;
    241 }
    242 
    243 void
    244 tx_cons_init(void)
    245 {
    246 	int slot;
    247 #define CONSPLATIDMATCH(p)						\
    248 	platid_match(&platid, &platid_mask_MACH_##p)
    249 
    250 #ifdef SERIALCONSSLOT
    251 	slot = SERIALCONSSLOT;
    252 #else
    253 	slot = TX39_UARTA;
    254 #endif
    255 	if (bootinfo->bi_cnuse & BI_CNUSE_SERIAL) {
    256 		if(txcom_cnattach(slot, CONSPEED,
    257 		    (TTYDEF_CFLAG & ~(CSIZE | PARENB)) | CS8)) {
    258 			panic("tx_cons_init: can't attach serial console.");
    259 		}
    260 	} else {
    261 #if NM38813C > 0
    262 		if(CONSPLATIDMATCH(VICTOR_INTERLINK) &&
    263 		    m38813c_cnattach(TX39_SYSADDR_CARD1)) {
    264 			goto panic;
    265 		}
    266 #endif
    267 #if NTC5165BUF > 0
    268 		if(CONSPLATIDMATCH(COMPAQ_C) &&
    269 		    tc5165buf_cnattach(TX39_SYSADDR_CS3)) {
    270 			goto panic;
    271 		}
    272 
    273 		if(CONSPLATIDMATCH(SHARP_TELIOS) &&
    274 		    tc5165buf_cnattach(TX39_SYSADDR_CS1)) {
    275 			goto panic;
    276 		}
    277 
    278 		if(CONSPLATIDMATCH(SHARP_MOBILON) &&
    279 		    tc5165buf_cnattach(TX39_SYSADDR_MCS0)) {
    280 			goto panic;
    281 		}
    282 #endif
    283 	}
    284 
    285 	return;
    286  panic:
    287 	panic("tx_cons_init: can't init console");
    288 	/* NOTREACHED */
    289 }
    290 
    291 void
    292 tx_conf_register_intr(tx_chipset_tag_t t, void *intrt)
    293 {
    294 
    295 	KASSERT(t == &tx_chipset);
    296 	tx_chipset.tc_intrt = intrt;
    297 }
    298 
    299 void
    300 tx_conf_register_power(tx_chipset_tag_t t, void *powert)
    301 {
    302 
    303 	KASSERT(t == &tx_chipset);
    304 	tx_chipset.tc_powert = powert;
    305 }
    306 
    307 void
    308 tx_conf_register_clock(tx_chipset_tag_t t, void *clockt)
    309 {
    310 
    311 	KASSERT(t == &tx_chipset);
    312 	tx_chipset.tc_clockt = clockt;
    313 }
    314 
    315 void
    316 tx_conf_register_sound(tx_chipset_tag_t t, void *soundt)
    317 {
    318 
    319 	KASSERT(t == &tx_chipset);
    320 	tx_chipset.tc_soundt = soundt;
    321 }
    322 
    323 void
    324 tx_conf_register_video(tx_chipset_tag_t t, void *videot)
    325 {
    326 
    327 	KASSERT(t == &tx_chipset);
    328 	tx_chipset.tc_videot = videot;
    329 }
    330