mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 22:33:18 +00:00
43c5087385
Move cpu desc code to cpu driver directory and name it imx8_cpu.c No functional change. Signed-off-by: Peng Fan <peng.fan@nxp.com>
182 lines
3.4 KiB
C
182 lines
3.4 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2019 NXP
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <cpu.h>
|
|
#include <dm.h>
|
|
#include <thermal.h>
|
|
#include <asm/arch/sci/sci.h>
|
|
#include <asm/arch/sys_proto.h>
|
|
#include <asm/arch-imx/cpu.h>
|
|
#include <asm/armv8/cpu.h>
|
|
|
|
DECLARE_GLOBAL_DATA_PTR;
|
|
|
|
struct cpu_imx_platdata {
|
|
const char *name;
|
|
const char *rev;
|
|
const char *type;
|
|
u32 cpurev;
|
|
u32 freq_mhz;
|
|
};
|
|
|
|
const char *get_imx8_type(u32 imxtype)
|
|
{
|
|
switch (imxtype) {
|
|
case MXC_CPU_IMX8QXP:
|
|
case MXC_CPU_IMX8QXP_A0:
|
|
return "QXP";
|
|
case MXC_CPU_IMX8QM:
|
|
return "QM";
|
|
default:
|
|
return "??";
|
|
}
|
|
}
|
|
|
|
const char *get_imx8_rev(u32 rev)
|
|
{
|
|
switch (rev) {
|
|
case CHIP_REV_A:
|
|
return "A";
|
|
case CHIP_REV_B:
|
|
return "B";
|
|
default:
|
|
return "?";
|
|
}
|
|
}
|
|
|
|
const char *get_core_name(void)
|
|
{
|
|
if (is_cortex_a35())
|
|
return "A35";
|
|
else if (is_cortex_a53())
|
|
return "A53";
|
|
else if (is_cortex_a72())
|
|
return "A72";
|
|
else
|
|
return "?";
|
|
}
|
|
|
|
#if IS_ENABLED(CONFIG_IMX_SCU_THERMAL)
|
|
static int cpu_imx_get_temp(void)
|
|
{
|
|
struct udevice *thermal_dev;
|
|
int cpu_tmp, ret;
|
|
|
|
ret = uclass_get_device_by_name(UCLASS_THERMAL, "cpu-thermal0",
|
|
&thermal_dev);
|
|
|
|
if (!ret) {
|
|
ret = thermal_get_temp(thermal_dev, &cpu_tmp);
|
|
if (ret)
|
|
return 0xdeadbeef;
|
|
} else {
|
|
return 0xdeadbeef;
|
|
}
|
|
|
|
return cpu_tmp;
|
|
}
|
|
#else
|
|
static int cpu_imx_get_temp(void)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
int cpu_imx_get_desc(struct udevice *dev, char *buf, int size)
|
|
{
|
|
struct cpu_imx_platdata *plat = dev_get_platdata(dev);
|
|
int ret;
|
|
|
|
if (size < 100)
|
|
return -ENOSPC;
|
|
|
|
ret = snprintf(buf, size, "NXP i.MX8%s Rev%s %s at %u MHz",
|
|
plat->type, plat->rev, plat->name, plat->freq_mhz);
|
|
|
|
if (IS_ENABLED(CONFIG_IMX_SCU_THERMAL)) {
|
|
buf = buf + ret;
|
|
size = size - ret;
|
|
ret = snprintf(buf, size, " at %dC", cpu_imx_get_temp());
|
|
}
|
|
|
|
snprintf(buf + ret, size - ret, "\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int cpu_imx_get_info(struct udevice *dev, struct cpu_info *info)
|
|
{
|
|
struct cpu_imx_platdata *plat = dev_get_platdata(dev);
|
|
|
|
info->cpu_freq = plat->freq_mhz * 1000;
|
|
info->features = BIT(CPU_FEAT_L1_CACHE) | BIT(CPU_FEAT_MMU);
|
|
return 0;
|
|
}
|
|
|
|
static int cpu_imx_get_count(struct udevice *dev)
|
|
{
|
|
return 4;
|
|
}
|
|
|
|
static int cpu_imx_get_vendor(struct udevice *dev, char *buf, int size)
|
|
{
|
|
snprintf(buf, size, "NXP");
|
|
return 0;
|
|
}
|
|
|
|
static const struct cpu_ops cpu_imx8_ops = {
|
|
.get_desc = cpu_imx_get_desc,
|
|
.get_info = cpu_imx_get_info,
|
|
.get_count = cpu_imx_get_count,
|
|
.get_vendor = cpu_imx_get_vendor,
|
|
};
|
|
|
|
static const struct udevice_id cpu_imx8_ids[] = {
|
|
{ .compatible = "arm,cortex-a35" },
|
|
{ .compatible = "arm,cortex-a53" },
|
|
{ }
|
|
};
|
|
|
|
static ulong imx8_get_cpu_rate(void)
|
|
{
|
|
ulong rate;
|
|
int ret;
|
|
int type = is_cortex_a35() ? SC_R_A35 : is_cortex_a53() ?
|
|
SC_R_A53 : SC_R_A72;
|
|
|
|
ret = sc_pm_get_clock_rate(-1, type, SC_PM_CLK_CPU,
|
|
(sc_pm_clock_rate_t *)&rate);
|
|
if (ret) {
|
|
printf("Could not read CPU frequency: %d\n", ret);
|
|
return 0;
|
|
}
|
|
|
|
return rate;
|
|
}
|
|
|
|
static int imx8_cpu_probe(struct udevice *dev)
|
|
{
|
|
struct cpu_imx_platdata *plat = dev_get_platdata(dev);
|
|
u32 cpurev;
|
|
|
|
cpurev = get_cpu_rev();
|
|
plat->cpurev = cpurev;
|
|
plat->name = get_core_name();
|
|
plat->rev = get_imx8_rev(cpurev & 0xFFF);
|
|
plat->type = get_imx8_type((cpurev & 0xFF000) >> 12);
|
|
plat->freq_mhz = imx8_get_cpu_rate() / 1000000;
|
|
return 0;
|
|
}
|
|
|
|
U_BOOT_DRIVER(cpu_imx8_drv) = {
|
|
.name = "imx8x_cpu",
|
|
.id = UCLASS_CPU,
|
|
.of_match = cpu_imx8_ids,
|
|
.ops = &cpu_imx8_ops,
|
|
.probe = imx8_cpu_probe,
|
|
.platdata_auto_alloc_size = sizeof(struct cpu_imx_platdata),
|
|
.flags = DM_FLAG_PRE_RELOC,
|
|
};
|