arch/arm/mach-imx/imx8ulp/soc.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright 2021 NXP
 */

#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/sys_proto.h>
#include <asm/mach-imx/boot_mode.h>

u32 get_cpu_rev(void)
{
	return (MXC_CPU_IMX8ULP << 12) | CHIP_REV_1_0;
}

enum bt_mode get_boot_mode(void)
{
	u32 bt0_cfg = 0;

	bt0_cfg = readl(CMC0_RBASE + 0x80);
	bt0_cfg &= (BT0CFG_LPBOOT_MASK | BT0CFG_DUALBOOT_MASK);

	if (!(bt0_cfg & BT0CFG_LPBOOT_MASK)) {
		/* No low power boot */
		if (bt0_cfg & BT0CFG_DUALBOOT_MASK)
			return DUAL_BOOT;
		else
			return SINGLE_BOOT;
	}

	return LOW_POWER_BOOT;
}

#if defined(CONFIG_DISPLAY_CPUINFO)
const char *get_imx_type(u32 imxtype)
{
	return "8ULP";
}

int print_cpuinfo(void)
{
	u32 cpurev;
	char cause[18];

	cpurev = get_cpu_rev();

	printf("CPU:   Freescale i.MX%s rev%d.%d at %d MHz\n",
	       get_imx_type((cpurev & 0xFF000) >> 12),
	       (cpurev & 0x000F0) >> 4, (cpurev & 0x0000F) >> 0,
	       mxc_get_clock(MXC_ARM_CLK) / 1000000);

	printf("Boot mode: ");
	switch (get_boot_mode()) {
	case LOW_POWER_BOOT:
		printf("Low power boot\n");
		break;
	case DUAL_BOOT:
		printf("Dual boot\n");
		break;
	case SINGLE_BOOT:
	default:
		printf("Single boot\n");
		break;
	}

	return 0;
}
#endif