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);
86 * @brief Probe for whether we are on this platform, returning the standard
87 * newbus probe codes. If we have Open Firmware or a flattened device tree,
88 * it is guaranteed to be available at this point.
96 * @brief Attach this platform module. This happens before the MMU is online,
97 * so the platform module can install its own high-priority MMU module at
102 } DEFAULT platform_null_attach;
106 * @brief Return the system's physical memory map.
108 * It shall provide the total and the available regions of RAM.
109 * The available regions need not take the kernel into account.
111 * @param _memp Array of physical memory chunks
112 * @param _memsz Number of physical memory chunks
113 * @param _availp Array of available physical memory chunks
114 * @param _availsz Number of available physical memory chunks
117 METHOD void mem_regions {
119 struct mem_region **_memp;
121 struct mem_region **_availp;
126 * @brief Return the maximum address accessible in real mode
127 * (for use with hypervisors)
129 METHOD vm_offset_t real_maxaddr {
131 } DEFAULT platform_null_real_maxaddr;
135 * @brief Get the CPU's timebase frequency, in ticks per second.
137 * @param _cpu CPU whose timebase to query
140 METHOD u_long timebase_freq {
148 * @brief Fill the first CPU's cpuref
152 METHOD int smp_first_cpu {
154 struct cpuref *_cpuref;
155 } DEFAULT platform_null_smp_first_cpu;
158 * @brief Fill the next CPU's cpuref
162 METHOD int smp_next_cpu {
164 struct cpuref *_cpuref;
165 } DEFAULT platform_null_smp_next_cpu;
168 * @brief Find the boot processor
172 METHOD int smp_get_bsp {
174 struct cpuref *_cpuref;
175 } DEFAULT platform_null_smp_first_cpu;
182 METHOD int smp_start_cpu {
188 * @brief Return SMP topology
190 METHOD cpu_group_t smp_topo {
192 } DEFAULT platform_null_smp_topo;
195 * @brief Reset system