arch/sparc/kernel/cpu.c - LeafOS-Devices/android_kernel_realme_mt6785 - Gitiles

 /* cpu.c: Dinky routines to look for the kind of Sparc cpu
  *        we are on.
  *
  * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
  */

 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/smp.h>
 #include <linux/threads.h>

 #include <asm/spitfire.h>
 #include <asm/oplib.h>
 #include <asm/page.h>
 #include <asm/head.h>
 #include <asm/psr.h>
 #include <asm/mbus.h>
 #include <asm/cpudata.h>

 #include "kernel.h"

 DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };

 struct cpu_info {
 	int psr_vers;
 	const char *name;
 };

 struct fpu_info {
 	int fp_vers;
 	const char *name;
 };

 #define NOCPU 8
 #define NOFPU 8

 struct manufacturer_info {
 	int psr_impl;
 	struct cpu_info cpu_info[NOCPU];
 	struct fpu_info fpu_info[NOFPU];
 };

 #define CPU(ver, _name) \
 { .psr_vers = ver, .name = _name }

 #define FPU(ver, _name) \
 { .fp_vers = ver, .name = _name }

 static const struct manufacturer_info __initconst manufacturer_info[] = {
 {
 	0,
 	/* Sun4/100, 4/200, SLC */
 	.cpu_info = {
 		CPU(0, "Fujitsu  MB86900/1A or LSI L64831 SparcKIT-40"),
 		/* borned STP1012PGA */
 		CPU(4,  "Fujitsu  MB86904"),
 		CPU(5, "Fujitsu TurboSparc MB86907"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
 		FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
 		FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
 		/* SparcStation SLC, SparcStation1 */
 		FPU(3, "Weitek WTL3170/2"),
 		/* SPARCstation-5 */
 		FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
 		FPU(-1, NULL)
 	}
 },{
 	1,
 	.cpu_info = {
 		/* SparcStation2, SparcServer 490 & 690 */
 		CPU(0, "LSI Logic Corporation - L64811"),
 		/* SparcStation2 */
 		CPU(1, "Cypress/ROSS CY7C601"),
 		/* Embedded controller */
 		CPU(3, "Cypress/ROSS CY7C611"),
 		/* Ross Technologies HyperSparc */
 		CPU(0xf, "ROSS HyperSparc RT620"),
 		CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(0, "ROSS HyperSparc combined IU/FPU"),
 		FPU(1, "Lsi Logic L64814"),
 		FPU(2, "Texas Instruments TMS390-C602A"),
 		FPU(3, "Cypress CY7C602 FPU"),
 		FPU(-1, NULL)
 	}
 },{
 	2,
 	.cpu_info = {
 		/* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
 		/* Someone please write the code to support this beast! ;) */
 		CPU(0, "Bipolar Integrated Technology - B5010"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(-1, NULL)
 	}
 },{
 	3,
 	.cpu_info = {
 		CPU(0, "LSI Logic Corporation - unknown-type"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(-1, NULL)
 	}
 },{
 	4,
 	.cpu_info = {
 		CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
 		/* SparcClassic  --  borned STP1010TAB-50*/
 		CPU(1, "Texas Instruments, Inc. - MicroSparc"),
 		CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
 		CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
 		CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
 		CPU(5, "Texas Instruments, Inc. - unknown"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		/* SuperSparc 50 module */
 		FPU(0, "SuperSparc on-chip FPU"),
 		/* SparcClassic */
 		FPU(4, "TI MicroSparc on chip FPU"),
 		FPU(-1, NULL)
 	}
 },{
 	5,
 	.cpu_info = {
 		CPU(0, "Matsushita - MN10501"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(0, "Matsushita MN10501"),
 		FPU(-1, NULL)
 	}
 },{
 	6,
 	.cpu_info = {
 		CPU(0, "Philips Corporation - unknown"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(-1, NULL)
 	}
 },{
 	7,
 	.cpu_info = {
 		CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(-1, NULL)
 	}
 },{
 	8,
 	.cpu_info = {
 		CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(-1, NULL)
 	}
 },{
 	9,
 	.cpu_info = {
 		/* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
 		CPU(0, "Fujitsu or Weitek Power-UP"),
 		CPU(1, "Fujitsu or Weitek Power-UP"),
 		CPU(2, "Fujitsu or Weitek Power-UP"),
 		CPU(3, "Fujitsu or Weitek Power-UP"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(3, "Fujitsu or Weitek on-chip FPU"),
 		FPU(-1, NULL)
 	}
 },{
 	0x17,
 	.cpu_info = {
 		CPU(0x10, "TI UltraSparc I   (SpitFire)"),
 		CPU(0x11, "TI UltraSparc II  (BlackBird)"),
 		CPU(0x12, "TI UltraSparc IIi (Sabre)"),
 		CPU(0x13, "TI UltraSparc IIe (Hummingbird)"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(0x10, "UltraSparc I integrated FPU"),
 		FPU(0x11, "UltraSparc II integrated FPU"),
 		FPU(0x12, "UltraSparc IIi integrated FPU"),
 		FPU(0x13, "UltraSparc IIe integrated FPU"),
 		FPU(-1, NULL)
 	}
 },{
 	0x22,
 	.cpu_info = {
 		CPU(0x10, "TI UltraSparc I   (SpitFire)"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(0x10, "UltraSparc I integrated FPU"),
 		FPU(-1, NULL)
 	}
 },{
 	0x3e,
 	.cpu_info = {
 		CPU(0x14, "TI UltraSparc III (Cheetah)"),
 		CPU(0x15, "TI UltraSparc III+ (Cheetah+)"),
 		CPU(0x16, "TI UltraSparc IIIi (Jalapeno)"),
 		CPU(0x18, "TI UltraSparc IV (Jaguar)"),
 		CPU(0x19, "TI UltraSparc IV+ (Panther)"),
 		CPU(0x22, "TI UltraSparc IIIi+ (Serrano)"),
 		CPU(-1, NULL)
 	},
 	.fpu_info = {
 		FPU(0x14, "UltraSparc III integrated FPU"),
 		FPU(0x15, "UltraSparc III+ integrated FPU"),
 		FPU(0x16, "UltraSparc IIIi integrated FPU"),
 		FPU(0x18, "UltraSparc IV integrated FPU"),
 		FPU(0x19, "UltraSparc IV+ integrated FPU"),
 		FPU(0x22, "UltraSparc IIIi+ integrated FPU"),
 		FPU(-1, NULL)
 	}
 }};

 /* In order to get the fpu type correct, you need to take the IDPROM's
  * machine type value into consideration too.  I will fix this.
  */

 const char *sparc_cpu_type;
 const char *sparc_fpu_type;

 unsigned int fsr_storage;

 static void set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
 {
 	sparc_cpu_type = NULL;
 	sparc_fpu_type = NULL;
 	if (psr_impl < ARRAY_SIZE(manufacturer_info))
 	{
 		const struct cpu_info *cpu;
 		const struct fpu_info *fpu;

 		cpu = &manufacturer_info[psr_impl].cpu_info[0];
 		while (cpu->psr_vers != -1)
 		{
 			if (cpu->psr_vers == psr_vers) {
 				sparc_cpu_type = cpu->name;
 				sparc_fpu_type = "No FPU";
 				break;
 			}
 			cpu++;
 		}
 		fpu =  &manufacturer_info[psr_impl].fpu_info[0];
 		while (fpu->fp_vers != -1)
 		{
 			if (fpu->fp_vers == fpu_vers) {
 				sparc_fpu_type = fpu->name;
 				break;
 			}
 			fpu++;
 		}
 	}
 	if (sparc_cpu_type == NULL)
 	{
 		printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
 		       psr_impl, psr_vers);
 		sparc_cpu_type = "Unknown CPU";
 	}
 	if (sparc_fpu_type == NULL)
 	{
 		printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
 		       psr_impl, fpu_vers);
 		sparc_fpu_type = "Unknown FPU";
 	}
 }

 #ifdef CONFIG_SPARC32
 void __cpuinit cpu_probe(void)
 {
 	int psr_impl, psr_vers, fpu_vers;
 	int psr;

 	psr_impl = ((get_psr() >> 28) & 0xf);
 	psr_vers = ((get_psr() >> 24) & 0xf);

 	psr = get_psr();
 	put_psr(psr | PSR_EF);
 	fpu_vers = ((get_fsr() >> 17) & 0x7);
 	put_psr(psr);

 	set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
 }
 #else
 static void __init sun4v_cpu_probe(void)
 {
 	switch (sun4v_chip_type) {
 	case SUN4V_CHIP_NIAGARA1:
 		sparc_cpu_type = "UltraSparc T1 (Niagara)";
 		sparc_fpu_type = "UltraSparc T1 integrated FPU";
 		break;

 	case SUN4V_CHIP_NIAGARA2:
 		sparc_cpu_type = "UltraSparc T2 (Niagara2)";
 		sparc_fpu_type = "UltraSparc T2 integrated FPU";
 		break;

 	default:
 		printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
 		       prom_cpu_compatible);
 		sparc_cpu_type = "Unknown SUN4V CPU";
 		sparc_fpu_type = "Unknown SUN4V FPU";
 		break;
 	}
 }

 static int __init cpu_type_probe(void)
 {
 	if (tlb_type == hypervisor) {
 		sun4v_cpu_probe();
 	} else {
 		unsigned long ver;
 		int manuf, impl;

 		__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));

 		manuf = ((ver >> 48) & 0xffff);
 		impl = ((ver >> 32) & 0xffff);
 		set_cpu_and_fpu(manuf, impl, impl);
 	}
 	return 0;
 }

 arch_initcall(cpu_type_probe);
 #endif
	/* cpu.c: Dinky routines to look for the kind of Sparc cpu
	* we are on.
	*
	* Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu)
	*/

	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/smp.h>
	#include <linux/threads.h>

	#include <asm/spitfire.h>
	#include <asm/oplib.h>
	#include <asm/page.h>
	#include <asm/head.h>
	#include <asm/psr.h>
	#include <asm/mbus.h>
	#include <asm/cpudata.h>

	#include "kernel.h"

	DEFINE_PER_CPU(cpuinfo_sparc, __cpu_data) = { 0 };

	struct cpu_info {
	int psr_vers;
	const char *name;
	};

	struct fpu_info {
	int fp_vers;
	const char *name;
	};

	#define NOCPU 8
	#define NOFPU 8

	struct manufacturer_info {
	int psr_impl;
	struct cpu_info cpu_info[NOCPU];
	struct fpu_info fpu_info[NOFPU];
	};

	#define CPU(ver, _name) \
	{ .psr_vers = ver, .name = _name }

	#define FPU(ver, _name) \
	{ .fp_vers = ver, .name = _name }

	static const struct manufacturer_info __initconst manufacturer_info[] = {
	{
	0,
	/* Sun4/100, 4/200, SLC */
	.cpu_info = {
	CPU(0, "Fujitsu MB86900/1A or LSI L64831 SparcKIT-40"),
	/* borned STP1012PGA */
	CPU(4, "Fujitsu MB86904"),
	CPU(5, "Fujitsu TurboSparc MB86907"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(0, "Fujitsu MB86910 or Weitek WTL1164/5"),
	FPU(1, "Fujitsu MB86911 or Weitek WTL1164/5 or LSI L64831"),
	FPU(2, "LSI Logic L64802 or Texas Instruments ACT8847"),
	/* SparcStation SLC, SparcStation1 */
	FPU(3, "Weitek WTL3170/2"),
	/* SPARCstation-5 */
	FPU(4, "Lsi Logic/Meiko L64804 or compatible"),
	FPU(-1, NULL)
	}
	},{
	1,
	.cpu_info = {
	/* SparcStation2, SparcServer 490 & 690 */
	CPU(0, "LSI Logic Corporation - L64811"),
	/* SparcStation2 */
	CPU(1, "Cypress/ROSS CY7C601"),
	/* Embedded controller */
	CPU(3, "Cypress/ROSS CY7C611"),
	/* Ross Technologies HyperSparc */
	CPU(0xf, "ROSS HyperSparc RT620"),
	CPU(0xe, "ROSS HyperSparc RT625 or RT626"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(0, "ROSS HyperSparc combined IU/FPU"),
	FPU(1, "Lsi Logic L64814"),
	FPU(2, "Texas Instruments TMS390-C602A"),
	FPU(3, "Cypress CY7C602 FPU"),
	FPU(-1, NULL)
	}
	},{
	2,
	.cpu_info = {
	/* ECL Implementation, CRAY S-MP Supercomputer... AIEEE! */
	/* Someone please write the code to support this beast! ;) */
	CPU(0, "Bipolar Integrated Technology - B5010"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(-1, NULL)
	}
	},{
	3,
	.cpu_info = {
	CPU(0, "LSI Logic Corporation - unknown-type"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(-1, NULL)
	}
	},{
	4,
	.cpu_info = {
	CPU(0, "Texas Instruments, Inc. - SuperSparc-(II)"),
	/* SparcClassic -- borned STP1010TAB-50*/
	CPU(1, "Texas Instruments, Inc. - MicroSparc"),
	CPU(2, "Texas Instruments, Inc. - MicroSparc II"),
	CPU(3, "Texas Instruments, Inc. - SuperSparc 51"),
	CPU(4, "Texas Instruments, Inc. - SuperSparc 61"),
	CPU(5, "Texas Instruments, Inc. - unknown"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	/* SuperSparc 50 module */
	FPU(0, "SuperSparc on-chip FPU"),
	/* SparcClassic */
	FPU(4, "TI MicroSparc on chip FPU"),
	FPU(-1, NULL)
	}
	},{
	5,
	.cpu_info = {
	CPU(0, "Matsushita - MN10501"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(0, "Matsushita MN10501"),
	FPU(-1, NULL)
	}
	},{
	6,
	.cpu_info = {
	CPU(0, "Philips Corporation - unknown"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(-1, NULL)
	}
	},{
	7,
	.cpu_info = {
	CPU(0, "Harvest VLSI Design Center, Inc. - unknown"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(-1, NULL)
	}
	},{
	8,
	.cpu_info = {
	CPU(0, "Systems and Processes Engineering Corporation (SPEC)"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(-1, NULL)
	}
	},{
	9,
	.cpu_info = {
	/* Gallium arsenide 200MHz, BOOOOGOOOOMIPS!!! */
	CPU(0, "Fujitsu or Weitek Power-UP"),
	CPU(1, "Fujitsu or Weitek Power-UP"),
	CPU(2, "Fujitsu or Weitek Power-UP"),
	CPU(3, "Fujitsu or Weitek Power-UP"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(3, "Fujitsu or Weitek on-chip FPU"),
	FPU(-1, NULL)
	}
	},{
	0x17,
	.cpu_info = {
	CPU(0x10, "TI UltraSparc I (SpitFire)"),
	CPU(0x11, "TI UltraSparc II (BlackBird)"),
	CPU(0x12, "TI UltraSparc IIi (Sabre)"),
	CPU(0x13, "TI UltraSparc IIe (Hummingbird)"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(0x10, "UltraSparc I integrated FPU"),
	FPU(0x11, "UltraSparc II integrated FPU"),
	FPU(0x12, "UltraSparc IIi integrated FPU"),
	FPU(0x13, "UltraSparc IIe integrated FPU"),
	FPU(-1, NULL)
	}
	},{
	0x22,
	.cpu_info = {
	CPU(0x10, "TI UltraSparc I (SpitFire)"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(0x10, "UltraSparc I integrated FPU"),
	FPU(-1, NULL)
	}
	},{
	0x3e,
	.cpu_info = {
	CPU(0x14, "TI UltraSparc III (Cheetah)"),
	CPU(0x15, "TI UltraSparc III+ (Cheetah+)"),
	CPU(0x16, "TI UltraSparc IIIi (Jalapeno)"),
	CPU(0x18, "TI UltraSparc IV (Jaguar)"),
	CPU(0x19, "TI UltraSparc IV+ (Panther)"),
	CPU(0x22, "TI UltraSparc IIIi+ (Serrano)"),
	CPU(-1, NULL)
	},
	.fpu_info = {
	FPU(0x14, "UltraSparc III integrated FPU"),
	FPU(0x15, "UltraSparc III+ integrated FPU"),
	FPU(0x16, "UltraSparc IIIi integrated FPU"),
	FPU(0x18, "UltraSparc IV integrated FPU"),
	FPU(0x19, "UltraSparc IV+ integrated FPU"),
	FPU(0x22, "UltraSparc IIIi+ integrated FPU"),
	FPU(-1, NULL)
	}
	}};

	/* In order to get the fpu type correct, you need to take the IDPROM's
	* machine type value into consideration too. I will fix this.
	*/

	const char *sparc_cpu_type;
	const char *sparc_fpu_type;

	unsigned int fsr_storage;

	static void set_cpu_and_fpu(int psr_impl, int psr_vers, int fpu_vers)
	{
	sparc_cpu_type = NULL;
	sparc_fpu_type = NULL;
	if (psr_impl < ARRAY_SIZE(manufacturer_info))
	{
	const struct cpu_info *cpu;
	const struct fpu_info *fpu;

	cpu = &manufacturer_info[psr_impl].cpu_info[0];
	while (cpu->psr_vers != -1)
	{
	if (cpu->psr_vers == psr_vers) {
	sparc_cpu_type = cpu->name;
	sparc_fpu_type = "No FPU";
	break;
	}
	cpu++;
	}
	fpu = &manufacturer_info[psr_impl].fpu_info[0];
	while (fpu->fp_vers != -1)
	{
	if (fpu->fp_vers == fpu_vers) {
	sparc_fpu_type = fpu->name;
	break;
	}
	fpu++;
	}
	}
	if (sparc_cpu_type == NULL)
	{
	printk(KERN_ERR "CPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
	psr_impl, psr_vers);
	sparc_cpu_type = "Unknown CPU";
	}
	if (sparc_fpu_type == NULL)
	{
	printk(KERN_ERR "FPU: Unknown chip, impl[0x%x] vers[0x%x]\n",
	psr_impl, fpu_vers);
	sparc_fpu_type = "Unknown FPU";
	}
	}

	#ifdef CONFIG_SPARC32
	void __cpuinit cpu_probe(void)
	{
	int psr_impl, psr_vers, fpu_vers;
	int psr;

	psr_impl = ((get_psr() >> 28) & 0xf);
	psr_vers = ((get_psr() >> 24) & 0xf);

	psr = get_psr();
	put_psr(psr \| PSR_EF);
	fpu_vers = ((get_fsr() >> 17) & 0x7);
	put_psr(psr);

	set_cpu_and_fpu(psr_impl, psr_vers, fpu_vers);
	}
	#else
	static void __init sun4v_cpu_probe(void)
	{
	switch (sun4v_chip_type) {
	case SUN4V_CHIP_NIAGARA1:
	sparc_cpu_type = "UltraSparc T1 (Niagara)";
	sparc_fpu_type = "UltraSparc T1 integrated FPU";
	break;

	case SUN4V_CHIP_NIAGARA2:
	sparc_cpu_type = "UltraSparc T2 (Niagara2)";
	sparc_fpu_type = "UltraSparc T2 integrated FPU";
	break;

	default:
	printk(KERN_WARNING "CPU: Unknown sun4v cpu type [%s]\n",
	prom_cpu_compatible);
	sparc_cpu_type = "Unknown SUN4V CPU";
	sparc_fpu_type = "Unknown SUN4V FPU";
	break;
	}
	}

	static int __init cpu_type_probe(void)
	{
	if (tlb_type == hypervisor) {
	sun4v_cpu_probe();
	} else {
	unsigned long ver;
	int manuf, impl;

	__asm__ __volatile__("rdpr %%ver, %0" : "=r" (ver));

	manuf = ((ver >> 48) & 0xffff);
	impl = ((ver >> 32) & 0xffff);
	set_cpu_and_fpu(manuf, impl, impl);
	}
	return 0;
	}

	arch_initcall(cpu_type_probe);
	#endif