[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kernel / cpu / transmeta.c

#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <asm/processor.h>
#include <asm/msr.h>
#include "cpu.h"

static void __cpuinit early_init_transmeta(struct cpuinfo_x86 *c)
{
	u32 xlvl;

	/* Transmeta-defined flags: level 0x80860001 */
	xlvl = cpuid_eax(0x80860000);
	if ((xlvl & 0xffff0000) == 0x80860000) {
		if (xlvl >= 0x80860001)
			c->x86_capability[2] = cpuid_edx(0x80860001);
	}
}

static void __cpuinit init_transmeta(struct cpuinfo_x86 *c)
{
	unsigned int cap_mask, uk, max, dummy;
	unsigned int cms_rev1, cms_rev2;
	unsigned int cpu_rev, cpu_freq = 0, cpu_flags, new_cpu_rev;
	char cpu_info[65];

	early_init_transmeta(c);

	cpu_detect_cache_sizes(c);

	/* Print CMS and CPU revision */
	max = cpuid_eax(0x80860000);
	cpu_rev = 0;
	if (max >= 0x80860001) {
		cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags);
		if (cpu_rev != 0x02000000) {
			printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
				(cpu_rev >> 24) & 0xff,
				(cpu_rev >> 16) & 0xff,
				(cpu_rev >> 8) & 0xff,
				cpu_rev & 0xff,
				cpu_freq);
		}
	}
	if (max >= 0x80860002) {
		cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy);
		if (cpu_rev == 0x02000000) {
			printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n",
				new_cpu_rev, cpu_freq);
		}
		printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
		       (cms_rev1 >> 24) & 0xff,
		       (cms_rev1 >> 16) & 0xff,
		       (cms_rev1 >> 8) & 0xff,
		       cms_rev1 & 0xff,
		       cms_rev2);
	}
	if (max >= 0x80860006) {
		cpuid(0x80860003,
		      (void *)&cpu_info[0],
		      (void *)&cpu_info[4],
		      (void *)&cpu_info[8],
		      (void *)&cpu_info[12]);
		cpuid(0x80860004,
		      (void *)&cpu_info[16],
		      (void *)&cpu_info[20],
		      (void *)&cpu_info[24],
		      (void *)&cpu_info[28]);
		cpuid(0x80860005,
		      (void *)&cpu_info[32],
		      (void *)&cpu_info[36],
		      (void *)&cpu_info[40],
		      (void *)&cpu_info[44]);
		cpuid(0x80860006,
		      (void *)&cpu_info[48],
		      (void *)&cpu_info[52],
		      (void *)&cpu_info[56],
		      (void *)&cpu_info[60]);
		cpu_info[64] = '\0';
		printk(KERN_INFO "CPU: %s\n", cpu_info);
	}

	/* Unhide possibly hidden capability flags */
	rdmsr(0x80860004, cap_mask, uk);
	wrmsr(0x80860004, ~0, uk);
	c->x86_capability[0] = cpuid_edx(0x00000001);
	wrmsr(0x80860004, cap_mask, uk);

	/* All Transmeta CPUs have a constant TSC */
	set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);

#ifdef CONFIG_SYSCTL
	/*
	 * randomize_va_space slows us down enormously;
	 * it probably triggers retranslation of x86->native bytecode
	 */
	randomize_va_space = 0;
#endif
}

static const struct cpu_dev __cpuinitconst transmeta_cpu_dev = {
	.c_vendor	= "Transmeta",
	.c_ident	= { "GenuineTMx86", "TransmetaCPU" },
	.c_early_init	= early_init_transmeta,
	.c_init		= init_transmeta,
	.c_x86_vendor	= X86_VENDOR_TRANSMETA,
};

cpu_dev_register(transmeta_cpu_dev);
Commit	Line	Data
1da177e4	1	#include <linux/kernel.h>
a62eaf15	2	#include <linux/mm.h>
1da177e4 LT	3	#include <linux/init.h>
	4	#include <asm/processor.h>
	5	#include <asm/msr.h>
	6	#include "cpu.h"
	7
afae8656 YL	8	static void __cpuinit early_init_transmeta(struct cpuinfo_x86 *c)
	9	{
	10	u32 xlvl;
	11
	12	/* Transmeta-defined flags: level 0x80860001 */
	13	xlvl = cpuid_eax(0x80860000);
	14	if ((xlvl & 0xffff0000) == 0x80860000) {
	15	if (xlvl >= 0x80860001)
	16	c->x86_capability[2] = cpuid_edx(0x80860001);
	17	}
	18	}
	19
b4af3f7c	20	static void __cpuinit init_transmeta(struct cpuinfo_x86 *c)
1da177e4 LT	21	{
	22	unsigned int cap_mask, uk, max, dummy;
	23	unsigned int cms_rev1, cms_rev2;
7de6d361	24	unsigned int cpu_rev, cpu_freq = 0, cpu_flags, new_cpu_rev;
1da177e4 LT	25	char cpu_info[65];
1da177e4 LT	26
afae8656 YL	27	early_init_transmeta(c);
afae8656 YL	28
27c13ece	29	cpu_detect_cache_sizes(c);
1da177e4 LT	30
	31	/* Print CMS and CPU revision */
	32	max = cpuid_eax(0x80860000);
	33	cpu_rev = 0;
f9751827 PC	34	if (max >= 0x80860001) {
f9751827 PC	35	cpuid(0x80860001, &dummy, &cpu_rev, &cpu_freq, &cpu_flags);
1da177e4 LT	36	if (cpu_rev != 0x02000000) {
	37	printk(KERN_INFO "CPU: Processor revision %u.%u.%u.%u, %u MHz\n",
	38	(cpu_rev >> 24) & 0xff,
	39	(cpu_rev >> 16) & 0xff,
	40	(cpu_rev >> 8) & 0xff,
	41	cpu_rev & 0xff,
	42	cpu_freq);
	43	}
	44	}
f9751827	45	if (max >= 0x80860002) {
1da177e4 LT	46	cpuid(0x80860002, &new_cpu_rev, &cms_rev1, &cms_rev2, &dummy);
	47	if (cpu_rev == 0x02000000) {
	48	printk(KERN_INFO "CPU: Processor revision %08X, %u MHz\n",
	49	new_cpu_rev, cpu_freq);
	50	}
	51	printk(KERN_INFO "CPU: Code Morphing Software revision %u.%u.%u-%u-%u\n",
	52	(cms_rev1 >> 24) & 0xff,
	53	(cms_rev1 >> 16) & 0xff,
	54	(cms_rev1 >> 8) & 0xff,
	55	cms_rev1 & 0xff,
	56	cms_rev2);
	57	}
f9751827	58	if (max >= 0x80860006) {
1da177e4 LT	59	cpuid(0x80860003,
	60	(void *)&cpu_info[0],
	61	(void *)&cpu_info[4],
	62	(void *)&cpu_info[8],
	63	(void *)&cpu_info[12]);
	64	cpuid(0x80860004,
	65	(void *)&cpu_info[16],
	66	(void *)&cpu_info[20],
	67	(void *)&cpu_info[24],
	68	(void *)&cpu_info[28]);
	69	cpuid(0x80860005,
	70	(void *)&cpu_info[32],
	71	(void *)&cpu_info[36],
	72	(void *)&cpu_info[40],
	73	(void *)&cpu_info[44]);
	74	cpuid(0x80860006,
	75	(void *)&cpu_info[48],
	76	(void *)&cpu_info[52],
	77	(void *)&cpu_info[56],
	78	(void *)&cpu_info[60]);
	79	cpu_info[64] = '\0';
	80	printk(KERN_INFO "CPU: %s\n", cpu_info);
	81	}
	82
	83	/* Unhide possibly hidden capability flags */
	84	rdmsr(0x80860004, cap_mask, uk);
	85	wrmsr(0x80860004, ~0, uk);
	86	c->x86_capability[0] = cpuid_edx(0x00000001);
	87	wrmsr(0x80860004, cap_mask, uk);
30b82ea0 PA	88
30b82ea0 PA	89	/* All Transmeta CPUs have a constant TSC */
10cd5a1e	90	set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
f9751827	91
39bbb07d	92	#ifdef CONFIG_SYSCTL
f9751827 PC	93	/*
	94	* randomize_va_space slows us down enormously;
	95	* it probably triggers retranslation of x86->native bytecode
	96	*/
cdf32eaa	97	randomize_va_space = 0;
39bbb07d	98	#endif
1da177e4 LT	99	}
1da177e4 LT	100
02dde8b4	101	static const struct cpu_dev __cpuinitconst transmeta_cpu_dev = {
1da177e4 LT	102	.c_vendor = "Transmeta",
1da177e4 LT	103	.c_ident = { "GenuineTMx86", "TransmetaCPU" },
afae8656	104	.c_early_init = early_init_transmeta,
1da177e4	105	.c_init = init_transmeta,
10a434fc	106	.c_x86_vendor = X86_VENDOR_TRANSMETA,
1da177e4 LT	107	};
1da177e4 LT	108
10a434fc	109	cpu_dev_register(transmeta_cpu_dev);