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 static int powermac_attach(platform_t);
60 void powermac_mem_regions(platform_t, struct mem_region **phys, int *physsz,
61 struct mem_region **avail, int *availsz);
62 static u_long powermac_timebase_freq(platform_t, struct cpuref *cpuref);
63 static int powermac_smp_first_cpu(platform_t, struct cpuref *cpuref);
64 static int powermac_smp_next_cpu(platform_t, struct cpuref *cpuref);
65 static int powermac_smp_get_bsp(platform_t, struct cpuref *cpuref);
66 static int powermac_smp_start_cpu(platform_t, struct pcpu *cpu);
67 static void powermac_reset(platform_t);
69 static platform_method_t powermac_methods[] = {
70 PLATFORMMETHOD(platform_probe, powermac_probe),
71 PLATFORMMETHOD(platform_attach, powermac_attach),
72 PLATFORMMETHOD(platform_mem_regions, powermac_mem_regions),
73 PLATFORMMETHOD(platform_timebase_freq, powermac_timebase_freq),
75 PLATFORMMETHOD(platform_smp_first_cpu, powermac_smp_first_cpu),
76 PLATFORMMETHOD(platform_smp_next_cpu, powermac_smp_next_cpu),
77 PLATFORMMETHOD(platform_smp_get_bsp, powermac_smp_get_bsp),
78 PLATFORMMETHOD(platform_smp_start_cpu, powermac_smp_start_cpu),
80 PLATFORMMETHOD(platform_reset, powermac_reset),
85 static platform_def_t powermac_platform = {
91 PLATFORM_DEF(powermac_platform);
94 powermac_probe(platform_t plat)
105 compatlen = OF_getprop(root, "compatible", compat, sizeof(compat));
107 for (curstr = compat; curstr < compat + compatlen;
108 curstr += strlen(curstr) + 1) {
109 if (strncmp(curstr, "MacRISC", 7) == 0)
110 return (BUS_PROBE_SPECIFIC);
117 powermac_mem_regions(platform_t plat, struct mem_region **phys, int *physsz,
118 struct mem_region **avail, int *availsz)
120 ofw_mem_regions(phys,physsz,avail,availsz);
124 powermac_attach(platform_t plat)
131 * Quiesce Open Firmware on PowerMac11,2 and 12,1. It is
132 * necessary there to shut down a background thread doing fan
133 * management, and is harmful on other machines (it will make OF
134 * shut off power to various system components it had turned on).
136 * Note: we don't need to worry about which OF module we are
137 * using since this is called only from very early boot, within
141 rootnode = OF_finddevice("/");
142 if (OF_getprop(rootnode, "model", model, sizeof(model)) > 0) {
143 if (strcmp(model, "PowerMac11,2") == 0 ||
144 strcmp(model, "PowerMac12,1") == 0) {
153 powermac_timebase_freq(platform_t plat, struct cpuref *cpuref)
158 phandle = cpuref->cr_hwref;
160 OF_getprop(phandle, "timebase-frequency", &ticks, sizeof(ticks));
163 panic("Unable to determine timebase frequency!");
170 powermac_smp_fill_cpuref(struct cpuref *cpuref, phandle_t cpu)
174 cpuref->cr_hwref = cpu;
175 res = OF_getprop(cpu, "reg", &cpuid, sizeof(cpuid));
178 * psim doesn't have a reg property, so assume 0 as for the
179 * uniprocessor case in the CHRP spec.
185 cpuref->cr_cpuid = cpuid & 0xff;
190 powermac_smp_first_cpu(platform_t plat, struct cpuref *cpuref)
193 phandle_t cpu, dev, root;
198 dev = OF_child(root);
200 res = OF_getprop(dev, "name", buf, sizeof(buf));
201 if (res > 0 && strcmp(buf, "cpus") == 0)
207 * psim doesn't have a name property on the /cpus node,
208 * but it can be found directly
210 dev = OF_finddevice("/cpus");
218 res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
219 if (res > 0 && strcmp(buf, "cpu") == 0)
226 return (powermac_smp_fill_cpuref(cpuref, cpu));
230 powermac_smp_next_cpu(platform_t plat, struct cpuref *cpuref)
236 cpu = OF_peer(cpuref->cr_hwref);
238 res = OF_getprop(cpu, "device_type", buf, sizeof(buf));
239 if (res > 0 && strcmp(buf, "cpu") == 0)
246 return (powermac_smp_fill_cpuref(cpuref, cpu));
250 powermac_smp_get_bsp(platform_t plat, struct cpuref *cpuref)
253 phandle_t bsp, chosen;
256 chosen = OF_finddevice("/chosen");
260 res = OF_getprop(chosen, "cpu", &inst, sizeof(inst));
264 bsp = OF_instance_to_package(inst);
265 return (powermac_smp_fill_cpuref(cpuref, bsp));
269 powermac_smp_start_cpu(platform_t plat, struct pcpu *pc)
273 volatile uint8_t *rstvec;
274 static volatile uint8_t *rstvec_virtbase = NULL;
275 int res, reset, timeout;
278 res = OF_getprop(cpu, "soft-reset", &reset, sizeof(reset));
282 switch (pc->pc_cpuid) {
302 if (rstvec_virtbase == NULL)
303 rstvec_virtbase = pmap_mapdev(0x80000000, PAGE_SIZE);
305 rstvec = rstvec_virtbase + reset;
318 while (!pc->pc_awake && timeout--)
321 return ((pc->pc_awake) ? 0 : EBUSY);
329 powermac_reset(platform_t platform)