m68knommu: remove local gettimeofday code
[wrt350n-kernel.git] / arch / x86 / mach-visws / mpparse.c
blob2a8456a1f44fc5896fe7de8ed25aa106d8bead68
2 #include <linux/init.h>
3 #include <linux/smp.h>
5 #include <asm/smp.h>
6 #include <asm/io.h>
8 #include "cobalt.h"
9 #include "mach_apic.h"
11 /* Have we found an MP table */
12 int smp_found_config;
15 * Various Linux-internal data structures created from the
16 * MP-table.
18 int apic_version [MAX_APICS];
20 int pic_mode;
21 unsigned long mp_lapic_addr;
23 /* Processor that is doing the boot up */
24 unsigned int boot_cpu_physical_apicid = -1U;
26 /* Bitmask of physically existing CPUs */
27 physid_mask_t phys_cpu_present_map;
29 unsigned int __initdata maxcpus = NR_CPUS;
32 * The Visual Workstation is Intel MP compliant in the hardware
33 * sense, but it doesn't have a BIOS(-configuration table).
34 * No problem for Linux.
37 static void __init MP_processor_info (struct mpc_config_processor *m)
39 int ver, logical_apicid;
40 physid_mask_t apic_cpus;
42 if (!(m->mpc_cpuflag & CPU_ENABLED))
43 return;
45 logical_apicid = m->mpc_apicid;
46 printk(KERN_INFO "%sCPU #%d %u:%u APIC version %d\n",
47 m->mpc_cpuflag & CPU_BOOTPROCESSOR ? "Bootup " : "",
48 m->mpc_apicid,
49 (m->mpc_cpufeature & CPU_FAMILY_MASK) >> 8,
50 (m->mpc_cpufeature & CPU_MODEL_MASK) >> 4,
51 m->mpc_apicver);
53 if (m->mpc_cpuflag & CPU_BOOTPROCESSOR)
54 boot_cpu_physical_apicid = m->mpc_apicid;
56 ver = m->mpc_apicver;
57 if ((ver >= 0x14 && m->mpc_apicid >= 0xff) || m->mpc_apicid >= 0xf) {
58 printk(KERN_ERR "Processor #%d INVALID. (Max ID: %d).\n",
59 m->mpc_apicid, MAX_APICS);
60 return;
63 apic_cpus = apicid_to_cpu_present(m->mpc_apicid);
64 physids_or(phys_cpu_present_map, phys_cpu_present_map, apic_cpus);
66 * Validate version
68 if (ver == 0x0) {
69 printk(KERN_ERR "BIOS bug, APIC version is 0 for CPU#%d! "
70 "fixing up to 0x10. (tell your hw vendor)\n",
71 m->mpc_apicid);
72 ver = 0x10;
74 apic_version[m->mpc_apicid] = ver;
77 void __init find_smp_config(void)
79 struct mpc_config_processor *mp = phys_to_virt(CO_CPU_TAB_PHYS);
80 unsigned short ncpus = readw(phys_to_virt(CO_CPU_NUM_PHYS));
82 if (ncpus > CO_CPU_MAX) {
83 printk(KERN_WARNING "find_visws_smp: got cpu count of %d at %p\n",
84 ncpus, mp);
86 ncpus = CO_CPU_MAX;
89 if (ncpus > maxcpus)
90 ncpus = maxcpus;
92 smp_found_config = 1;
93 while (ncpus--)
94 MP_processor_info(mp++);
96 mp_lapic_addr = APIC_DEFAULT_PHYS_BASE;
99 void __init get_smp_config (void)