arch/microblaze/kernel/cpu/cpuinfo.c

Source file repositories/reference/linux-study-clean/arch/microblaze/kernel/cpu/cpuinfo.c

File Facts

System
Linux kernel
Corpus path
arch/microblaze/kernel/cpu/cpuinfo.c
Extension
.c
Size
3261 bytes
Lines
143
Domain
Architecture Layer
Bucket
arch/microblaze
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#include <linux/clk.h>
#include <linux/init.h>
#include <asm/cpuinfo.h>
#include <asm/pvr.h>

const struct cpu_ver_key cpu_ver_lookup[] = {
	/* These key value are as per MBV field in PVR0 */
	{"5.00.a", 0x01},
	{"5.00.b", 0x02},
	{"5.00.c", 0x03},
	{"6.00.a", 0x04},
	{"6.00.b", 0x06},
	{"7.00.a", 0x05},
	{"7.00.b", 0x07},
	{"7.10.a", 0x08},
	{"7.10.b", 0x09},
	{"7.10.c", 0x0a},
	{"7.10.d", 0x0b},
	{"7.20.a", 0x0c},
	{"7.20.b", 0x0d},
	{"7.20.c", 0x0e},
	{"7.20.d", 0x0f},
	{"7.30.a", 0x10},
	{"7.30.b", 0x11},
	{"8.00.a", 0x12},
	{"8.00.b", 0x13},
	{"8.10.a", 0x14},
	{"8.20.a", 0x15},
	{"8.20.b", 0x16},
	{"8.30.a", 0x17},
	{"8.40.a", 0x18},
	{"8.40.b", 0x19},
	{"8.50.a", 0x1a},
	{"8.50.b", 0x1c},
	{"8.50.c", 0x1e},
	{"9.0", 0x1b},
	{"9.1", 0x1d},
	{"9.2", 0x1f},
	{"9.3", 0x20},
	{"9.4", 0x21},
	{"9.5", 0x22},
	{"9.6", 0x23},
	{"10.0", 0x24},
	{"11.0", 0x25},
	{NULL, 0},
};

/*
 * FIXME Not sure if the actual key is defined by Xilinx in the PVR
 */
const struct family_string_key family_string_lookup[] = {
	{"virtex2", 0x4},
	{"virtex2pro", 0x5},
	{"spartan3", 0x6},
	{"virtex4", 0x7},
	{"virtex5", 0x8},
	{"spartan3e", 0x9},
	{"spartan3a", 0xa},
	{"spartan3an", 0xb},
	{"spartan3adsp", 0xc},
	{"spartan6", 0xd},
	{"virtex6", 0xe},
	{"virtex7", 0xf},
	/* FIXME There is no key code defined for spartan2 */
	{"spartan2", 0xf0},
	{"kintex7", 0x10},
	{"artix7", 0x11},
	{"zynq7000", 0x12},
	{"UltraScale Virtex", 0x13},
	{"UltraScale Kintex", 0x14},
	{"UltraScale+ Zynq", 0x15},
	{"UltraScale+ Virtex", 0x16},
	{"UltraScale+ Kintex", 0x17},
	{"Spartan7", 0x18},
	{NULL, 0},
};

struct cpuinfo cpuinfo;
static struct device_node *cpu;

void __init setup_cpuinfo(void)
{
	cpu = of_get_cpu_node(0, NULL);
	if (!cpu)
		pr_err("You don't have cpu or are missing cpu reg property!!!\n");

	pr_info("%s: initialising\n", __func__);

	switch (cpu_has_pvr()) {
	case 0:

Annotation

Implementation Notes