2 #include <linux/init.h>
11 /* Have we found an MP table */
16 extern unsigned int __cpuinitdata maxcpus;
19 * The Visual Workstation is Intel MP compliant in the hardware
20 * sense, but it doesn't have a BIOS(-configuration table).
21 * No problem for Linux.
24 static void __init MP_processor_info (struct mpc_config_processor *m)
26 int ver, logical_apicid;
27 physid_mask_t apic_cpus;
29 if (!(m->mpc_cpuflag & CPU_ENABLED))
32 logical_apicid = m->mpc_apicid;
33 printk(KERN_INFO "%sCPU #%d %u:%u APIC version %d\n",
34 m->mpc_cpuflag & CPU_BOOTPROCESSOR ? "Bootup " : "",
36 (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
37 (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
40 if (m->mpc_cpuflag & CPU_BOOTPROCESSOR)
41 boot_cpu_physical_apicid = m->mpc_apicid;
44 if ((ver >= 0x14 && m->mpc_apicid >= 0xff) || m->mpc_apicid >= 0xf) {
45 printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n",
46 m->mpc_apicid, MAX_APICS);
50 apic_cpus = apicid_to_cpu_present(m->mpc_apicid);
51 physids_or(phys_cpu_present_map, phys_cpu_present_map, apic_cpus);
56 printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! "
57 "fixing up to 0x10. (tell your hw vendor)\n",
61 apic_version[m->mpc_apicid] = ver;
64 void __init find_smp_config(void)
66 struct mpc_config_processor *mp = phys_to_virt(CO_CPU_TAB_PHYS);
67 unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS));
69 if (ncpus > CO_CPU_MAX) {
70 printk(KERN_WARNING "find_visws_smp: got cpu count of %d at %p\n",
81 MP_processor_info(mp++);
83 mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
86 void __init get_smp_config (void)