2 # Copyright (c) 2009 Nathan Whitehorn
5 # Redistribution and use in source and binary forms, with or without
6 # modification, are permitted provided that the following conditions
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29 #include <sys/param.h>
31 #include <sys/mutex.h>
32 #include <sys/systm.h>
35 #include <machine/platform.h>
36 #include <machine/platformvar.h>
37 #include <machine/smp.h>
38 #include <machine/vmparam.h>
41 * @defgroup PLATFORM platform - KObj methods for PowerPC platform
43 * @brief A set of methods required by all platform implementations.
44 * These are used to bring up secondary CPUs, supply the physical memory
52 # Default implementations
55 static void platform_null_attach(platform_t plat)
59 static int platform_null_smp_first_cpu(platform_t plat,
60 struct cpuref *cpuref)
62 cpuref->cr_hwref = -1;
66 static int platform_null_smp_next_cpu(platform_t plat,
67 struct cpuref *_cpuref)
71 static struct cpu_group *platform_null_smp_topo(platform_t plat)
74 return (smp_topo_none());
79 static vm_offset_t platform_null_real_maxaddr(platform_t plat)
81 return (VM_MAX_ADDRESS);
83 static void platform_null_smp_ap_init(platform_t plat)
87 static void platform_null_idle(platform_t plat, int cpu)
91 static int platform_null_idle_wakeup(platform_t plat, int cpu)
98 * @brief Probe for whether we are on this platform, returning the standard
99 * newbus probe codes. If we have Open Firmware or a flattened device tree,
100 * it is guaranteed to be available at this point.
108 * @brief Attach this platform module. This happens before the MMU is online,
109 * so the platform module can install its own high-priority MMU module at
114 } DEFAULT platform_null_attach;
118 * @brief Return the system's physical memory map.
120 * It shall provide the total and the available regions of RAM.
121 * The available regions need not take the kernel into account.
123 * @param _memp Array of physical memory chunks
124 * @param _memsz Number of physical memory chunks
125 * @param _availp Array of available physical memory chunks
126 * @param _availsz Number of available physical memory chunks
129 METHOD void mem_regions {
131 struct mem_region *_memp;
133 struct mem_region *_availp;
138 * @brief Return the maximum address accessible in real mode
139 * (for use with hypervisors)
141 METHOD vm_offset_t real_maxaddr {
143 } DEFAULT platform_null_real_maxaddr;
147 * @brief Get the CPU's timebase frequency, in ticks per second.
149 * @param _cpu CPU whose timebase to query
152 METHOD u_long timebase_freq {
160 * @brief Fill the first CPU's cpuref
164 METHOD int smp_first_cpu {
166 struct cpuref *_cpuref;
167 } DEFAULT platform_null_smp_first_cpu;
170 * @brief Fill the next CPU's cpuref
174 METHOD int smp_next_cpu {
176 struct cpuref *_cpuref;
177 } DEFAULT platform_null_smp_next_cpu;
180 * @brief Find the boot processor
184 METHOD int smp_get_bsp {
186 struct cpuref *_cpuref;
187 } DEFAULT platform_null_smp_first_cpu;
194 METHOD int smp_start_cpu {
203 METHOD void smp_ap_init {
205 } DEFAULT platform_null_smp_ap_init;
208 * @brief Return SMP topology
210 METHOD cpu_group_t smp_topo {
212 } DEFAULT platform_null_smp_topo;
215 * @brief Reset system
227 } DEFAULT platform_null_idle;
230 * @brief Wake up an idle CPU
232 METHOD int idle_wakeup {
235 } DEFAULT platform_null_idle_wakeup;
238 * @brief Suspend the CPU