2 * Copyright (c) 2008 Marcel Moolenaar
3 * Copyright (c) 2009 Nathan Whitehorn
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
31 #include <sys/param.h>
32 #include <sys/systm.h>
33 #include <sys/kernel.h>
41 #include <machine/bus.h>
42 #include <machine/cpu.h>
43 #include <machine/hid.h>
44 #include <machine/platformvar.h>
45 #include <machine/pmap.h>
46 #include <machine/smp.h>
47 #include <machine/spr.h>
49 #include <dev/ofw/openfirm.h>
50 #include <machine/ofw_machdep.h>
52 #include "platform_if.h"
58 static int powermac_probe(platform_t);
59 void powermac_mem_regions(platform_t, struct mem_region **phys, int *physsz,
60 struct mem_region **avail, int *availsz);
61 static u_long powermac_timebase_freq(platform_t, struct cpuref *cpuref);
62 static int powermac_smp_first_cpu(platform_t, struct cpuref *cpuref);
63 static int powermac_smp_next_cpu(platform_t, struct cpuref *cpuref);
64 static int powermac_smp_get_bsp(platform_t, struct cpuref *cpuref);
65 static int powermac_smp_start_cpu(platform_t, struct pcpu *cpu);
66 static void powermac_reset(platform_t);
68 static platform_method_t powermac_methods[] = {
69 PLATFORMMETHOD(platform_probe, powermac_probe),
70 PLATFORMMETHOD(platform_mem_regions, powermac_mem_regions),
71 PLATFORMMETHOD(platform_timebase_freq, powermac_timebase_freq),
73 PLATFORMMETHOD(platform_smp_first_cpu, powermac_smp_first_cpu),
74 PLATFORMMETHOD(platform_smp_next_cpu, powermac_smp_next_cpu),
75 PLATFORMMETHOD(platform_smp_get_bsp, powermac_smp_get_bsp),
76 PLATFORMMETHOD(platform_smp_start_cpu, powermac_smp_start_cpu),
78 PLATFORMMETHOD(platform_reset, powermac_reset),
83 static platform_def_t powermac_platform = {
89 PLATFORM_DEF(powermac_platform);
92 powermac_probe(platform_t plat)
94 if (OF_finddevice("/memory") != -1 || OF_finddevice("/memory@0") != -1)
95 return (BUS_PROBE_GENERIC);
101 powermac_mem_regions(platform_t plat, struct mem_region **phys, int *physsz,
102 struct mem_region **avail, int *availsz)
104 ofw_mem_regions(phys,physsz,avail,availsz);
108 powermac_timebase_freq(platform_t plat, struct cpuref *cpuref)
113 phandle = cpuref->cr_hwref;
115 OF_getprop(phandle, "timebase-frequency", &ticks, sizeof(ticks));
118 panic("Unable to determine timebase frequency!");
125 powermac_smp_fill_cpuref(struct cpuref *cpuref, phandle_t cpu)
129 cpuref->cr_hwref = cpu;
130 res = OF_getprop(cpu, "reg", &cpuid, sizeof(cpuid));
133 * psim doesn't have a reg property, so assume 0 as for the
134 * uniprocessor case in the CHRP spec.
140 cpuref->cr_cpuid = cpuid & 0xff;
145 powermac_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
148 phandle_t cpu, dev, root;
153 dev = OF_child(root);
155 res = OF_getprop(dev, "name", buf, sizeof(buf));
156 if (res > 0 && strcmp(buf, "cpus") == 0)
162 * psim doesn't have a name property on the /cpus node,
163 * but it can be found directly
165 dev = OF_finddevice("/cpus");
173 res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
174 if (res > 0 && strcmp(buf, "cpu") == 0)
181 return (powermac_smp_fill_cpuref(cpuref, cpu));
185 powermac_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
191 cpu = OF_peer(cpuref->cr_hwref);
193 res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
194 if (res > 0 && strcmp(buf, "cpu") == 0)
201 return (powermac_smp_fill_cpuref(cpuref, cpu));
205 powermac_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
208 phandle_t bsp, chosen;
211 chosen = OF_finddevice("/chosen");
215 res = OF_getprop(chosen, "cpu", &inst, sizeof(inst));
219 bsp = OF_instance_to_package(inst);
220 return (powermac_smp_fill_cpuref(cpuref, bsp));
224 powermac_smp_start_cpu(platform_t plat, struct pcpu *pc)
228 volatile uint8_t *rstvec;
229 static volatile uint8_t *rstvec_virtbase = NULL;
230 int res, reset, timeout;
233 res = OF_getprop(cpu, "soft-reset", &reset, sizeof(reset));
237 switch (pc->pc_cpuid) {
257 if (rstvec_virtbase == NULL)
258 rstvec_virtbase = pmap_mapdev(0x80000000, PAGE_SIZE);
260 rstvec = rstvec_virtbase + reset;
273 while (!pc->pc_awake && timeout--)
276 return ((pc->pc_awake) ? 0 : EBUSY);
284 powermac_reset(platform_t platform)