^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <linux/sched/clock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <linux/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <asm/cpufeature.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <asm/msr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "cpu.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) static void early_init_transmeta(struct cpuinfo_x86 *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) u32 xlvl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) /* Transmeta-defined flags: level 0x80860001 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) xlvl = cpuid_eax(0x80860000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) if ((xlvl & 0xffff0000) == 0x80860000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) if (xlvl >= 0x80860001)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) c->x86_capability[CPUID_8086_0001_EDX] = cpuid_edx(0x80860001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static void init_transmeta(struct cpuinfo_x86 *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) unsigned int cap_mask, uk, max, dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) unsigned int cms_rev1, cms_rev2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) unsigned int cpu_rev, cpu_freq = 0, cpu_flags, new_cpu_rev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) char cpu_info[65];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) early_init_transmeta(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) cpu_detect_cache_sizes(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* Print CMS and CPU revision */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) max = cpuid_eax(0x80860000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) cpu_rev = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) if (max >= 0x80860001) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) if (cpu_rev != 0x02000000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) pr_info("CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) (cpu_rev >> 24) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) (cpu_rev >> 16) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) (cpu_rev >> 8) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) cpu_rev & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) cpu_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) if (max >= 0x80860002) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (cpu_rev == 0x02000000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) pr_info("CPU: Processor revision %08X, %u MHz\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) new_cpu_rev, cpu_freq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) pr_info("CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) (cms_rev1 >> 24) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) (cms_rev1 >> 16) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) (cms_rev1 >> 8) & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) cms_rev1 & 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) cms_rev2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (max >= 0x80860006) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) cpuid(0x80860003,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) (void *)&cpu_info[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) (void *)&cpu_info[4],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) (void *)&cpu_info[8],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) (void *)&cpu_info[12]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) cpuid(0x80860004,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) (void *)&cpu_info[16],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) (void *)&cpu_info[20],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) (void *)&cpu_info[24],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) (void *)&cpu_info[28]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) cpuid(0x80860005,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) (void *)&cpu_info[32],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) (void *)&cpu_info[36],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) (void *)&cpu_info[40],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) (void *)&cpu_info[44]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) cpuid(0x80860006,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) (void *)&cpu_info[48],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) (void *)&cpu_info[52],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) (void *)&cpu_info[56],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) (void *)&cpu_info[60]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) cpu_info[64] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) pr_info("CPU: %s\n", cpu_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) /* Unhide possibly hidden capability flags */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) rdmsr(0x80860004, cap_mask, uk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) wrmsr(0x80860004, ~0, uk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) c->x86_capability[CPUID_1_EDX] = cpuid_edx(0x00000001);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) wrmsr(0x80860004, cap_mask, uk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) /* All Transmeta CPUs have a constant TSC */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #ifdef CONFIG_SYSCTL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * randomize_va_space slows us down enormously;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * it probably triggers retranslation of x86->native bytecode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) randomize_va_space = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static const struct cpu_dev transmeta_cpu_dev = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .c_vendor = "Transmeta",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .c_ident = { "GenuineTMx86", "TransmetaCPU" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .c_early_init = early_init_transmeta,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) .c_init = init_transmeta,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) .c_x86_vendor = X86_VENDOR_TRANSMETA,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) cpu_dev_register(transmeta_cpu_dev);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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