1 /* $NetBSD: xs_bee3.c,v 1.5 2016/07/11 16:18:56 matt Exp $ */
2
3 /*-
4 * Copyright (c) 2010 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code was written by Alessandro Forin and Neil Pittman
8 * at Microsoft Research and contributed to The NetBSD Foundation
9 * by Microsoft Corporation.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33 #include <sys/cdefs.h>
34 __KERNEL_RCSID(0, "$NetBSD: xs_bee3.c,v 1.5 2016/07/11 16:18:56 matt Exp $");
35
36 #define __INTR_PRIVATE
37
38 #include <sys/param.h>
39 #include <sys/systm.h>
40 #include <sys/device.h>
41 #include <sys/cpu.h>
42 #include <sys/intr.h>
43
44 #include <uvm/uvm_extern.h>
45
46 #include <machine/sysconf.h>
47 #include <machine/locore.h>
48
49 #include <emips/emips/machdep.h>
50 #include <emips/emips/cons.h>
51 #include <machine/emipsreg.h>
52
53
54 void xs_bee3_init (void);
55 static void xs_bee3_cons_init (void);
56
57 #if 0
58 #define NOINTS (MIPS_INT_MASK_5|MIPS_SOFT_INT_MASK_0|MIPS_SOFT_INT_MASK_1)
59 #else
60 #define NOINTS MIPS_INT_MASK
61 #endif
62
63 /* BUGBUG Rewrite this to go off to the interrupt controller masks */
64 #if 0
65 splvec.splbio = MIPS_SPL0; // 0x700
66 splvec.splnet = MIPS_SPL_0_1; // 0xf00
67 splvec.spltty = MIPS_SPL_0_1_2; // 0x1f00
68 splvec.splvm = MIPS_SPLHIGH; // 0xff00
69 splvec.splclock = MIPS_SPL_0_1_2_3; //0x3f00
70 splvec.splstatclock = MIPS_SPL_0_1_2_3; //0x3f00
71 #endif
72
73 static const struct ipl_sr_map xs_bee3_ipl_sr_map = {
74 .sr_bits = {
75 [IPL_NONE] = 0,
76 [IPL_SOFTCLOCK] = MIPS_SOFT_INT_MASK_0,
77 [IPL_SOFTBIO] = MIPS_SOFT_INT_MASK_0,
78 [IPL_SOFTNET] = MIPS_SOFT_INT_MASK,
79 [IPL_SOFTSERIAL] = MIPS_SOFT_INT_MASK,
80 [IPL_VM] = NOINTS,
81 [IPL_SCHED] = NOINTS,
82 [IPL_DDB] = NOINTS,
83 [IPL_HIGH] = NOINTS,
84 },
85 };
86
87 void
xs_bee3_init(void)88 xs_bee3_init(void)
89 {
90 platform.iobus = "baseboard";
91 platform.bus_reset = noop;
92 platform.cons_init = xs_bee3_cons_init;
93 platform.iointr = emips_aic_intr;
94 platform.intr_establish = emips_intr_establish;
95 platform.memsize = memsize_pmt;
96 /* no high resolution timer available (actually we do?) */
97
98 /* calibrate cpu_mhz value */
99 //cpu_mhz = 10;
100 cpuspeed = 8; /* xxx */
101 cpu_setmodel("BeSquare BEE3 (eMIPS)");
102
103 ipl_sr_map = xs_bee3_ipl_sr_map;
104 }
105
106 static void
xs_bee3_cons_init(void)107 xs_bee3_cons_init(void)
108 {
109
110 /*
111 * Map the USART 1:1, we just turned on the TLB.
112 * NB: This must be a wired TLB entry lest we lose it before autoconf().
113 */
114 #if 0
115 pmap_kenter_pa(USART_DEFAULT_ADDRESS,
116 USART_DEFAULT_ADDRESS,VM_PROT_WRITE|VM_PROT_READ);
117 #else
118 struct tlbmask tlb;
119
120 tlb.tlb_hi = USART_DEFAULT_ADDRESS;
121 tlb.tlb_lo0 = USART_DEFAULT_ADDRESS | 0xf02;
122 tlb_write_entry(3, &tlb);
123 #endif
124
125 dz_ebus_cnsetup(USART_DEFAULT_ADDRESS);
126 }
127