/*
 * Copyright 2017 NXP
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <arch_helpers.h>
#include <assert.h>
#include <bl_common.h>
#include <console.h>
#include <context.h>
#include <context_mgmt.h>
#include <debug.h>
#include <stdbool.h>
#include <mmio.h>
#include <platform.h>
#include <platform_def.h>
#include <plat_imx8.h>
#include <xlat_tables.h>
#include <soc.h>
#include <tzc380.h>
#include <imx_csu.h>
#include <imx_rdc.h>

IMPORT_SYM(unsigned long, __COHERENT_RAM_START__, BL31_COHERENT_RAM_START);
IMPORT_SYM(unsigned long, __COHERENT_RAM_END__, BL31_COHERENT_RAM_END);
IMPORT_SYM(unsigned long, __RO_START__, BL31_RO_START);
IMPORT_SYM(unsigned long, __RO_END__, BL31_RO_END);
IMPORT_SYM(unsigned long, __RW_START__, BL31_RW_START);
IMPORT_SYM(unsigned long, __RW_END__, BL31_RW_END);

static entry_point_info_t bl32_image_ep_info;
static entry_point_info_t bl33_image_ep_info;

/* get SPSR for BL33 entry */
static uint32_t get_spsr_for_bl33_entry(void)
{
	unsigned long el_status;
	unsigned long mode;
	uint32_t spsr;

	/* figure out what mode we enter the non-secure world */
	el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
	el_status &= ID_AA64PFR0_ELX_MASK;

	mode = (el_status) ? MODE_EL2 : MODE_EL1;

	spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
	return spsr;
}

#define SCTR_BASE_ADDR		0x306c0000
#define CNTFID0_OFF		0x20
#define CNTFID1_OFF		0x24

#define SC_CNTCR_ENABLE         (1 << 0)
#define SC_CNTCR_HDBG           (1 << 1)
#define SC_CNTCR_FREQ0          (1 << 8)
#define SC_CNTCR_FREQ1          (1 << 9)

#define GPR_TZASC_EN		(1 << 0)
#define GPR_TZASC_EN_LOCK	(1 << 16)

void bl31_tzc380_setup(void)
{
	unsigned int val;

	val = mmio_read_32(IMX_IOMUX_GPR_BASE + 0x28);
	if ((val & GPR_TZASC_EN) != GPR_TZASC_EN)
		return;

	NOTICE("Configureing TZASC380\n");

	tzc380_init(IMX_TZASC_BASE);

	/*
	 * Need to substact offset 0x40000000 from CPU address when
	 * programming tzasc region for i.mx8mq.
	 */

	/* Enable 1G-5G S/NS RW */
	tzc380_configure_region(0, 0x00000000, TZC_ATTR_REGION_SIZE(TZC_REGION_SIZE_4G) | TZC_ATTR_REGION_EN_MASK | TZC_ATTR_SP_ALL);

	tzc380_dump_state();
}

static void imx8mm_aips_config(void)
{
	/* config the AIPSTZ1 */
	mmio_write_32(0x301f0000, 0x77777777);
	mmio_write_32(0x301f0004, 0x77777777);
	mmio_write_32(0x301f0040, 0x0);
	mmio_write_32(0x301f0044, 0x0);
	mmio_write_32(0x301f0048, 0x0);
	mmio_write_32(0x301f004c, 0x0);
	mmio_write_32(0x301f0050, 0x0);

	/* config the AIPSTZ2 */
	mmio_write_32(0x305f0000, 0x77777777);
	mmio_write_32(0x305f0004, 0x77777777);
	mmio_write_32(0x305f0040, 0x0);
	mmio_write_32(0x305f0044, 0x0);
	mmio_write_32(0x305f0048, 0x0);
	mmio_write_32(0x305f004c, 0x0);
	mmio_write_32(0x305f0050, 0x0);

	/* config the AIPSTZ3 */
	mmio_write_32(0x309f0000, 0x77777777);
	mmio_write_32(0x309f0004, 0x77777777);
	mmio_write_32(0x309f0040, 0x0);
	mmio_write_32(0x309f0044, 0x0);
	mmio_write_32(0x309f0048, 0x0);
	mmio_write_32(0x309f004c, 0x0);
	mmio_write_32(0x309f0050, 0x0);

	/* config the AIPSTZ4 */
	mmio_write_32(0x32df0000, 0x77777777);
	mmio_write_32(0x32df0004, 0x77777777);
	mmio_write_32(0x32df0040, 0x0);
	mmio_write_32(0x32df0044, 0x0);
	mmio_write_32(0x32df0048, 0x0);
	mmio_write_32(0x32df004c, 0x0);
	mmio_write_32(0x32df0050, 0x0);
}

void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
		u_register_t arg2, u_register_t arg3)
{
#if !defined (CSU_RDC_TEST)
	int i;
	/* enable CSU NS access permission */
	for (i = 0; i < 64; i++) {
		mmio_write_32(0x303e0000 + i * 4, 0xffffffff);
	}
#endif
	/* config the aips access permission */
	imx8mm_aips_config();

#if DEBUG_CONSOLE
	console_init(IMX_BOOT_UART_BASE, IMX_BOOT_UART_CLK_IN_HZ,
		     IMX_CONSOLE_BAUDRATE);
#endif
	/*
	 * tell BL3-1 where the non-secure software image is located
	 * and the entry state information.
	 */
	bl33_image_ep_info.pc = PLAT_NS_IMAGE_OFFSET;
	bl33_image_ep_info.spsr = get_spsr_for_bl33_entry();
	SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);

#ifdef TEE_IMX8
	/* Populate entry point information for BL32 */
	SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0);
	SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
	bl32_image_ep_info.pc = BL32_BASE;
	bl32_image_ep_info.spsr = 0;
	/* Pass TEE base and size to uboot */
	bl33_image_ep_info.args.arg1 = 0xBE000000;
	bl33_image_ep_info.args.arg2 = 0x2000000;
#endif
	bl31_tzc380_setup();

#if defined (CSU_RDC_TEST)
	csu_test();
	rdc_test();
#endif
}

void bl31_plat_arch_setup(void)
{
	/* add the mmap */
	mmap_add_region(0x900000, 0x900000, 0x40000,
			MT_MEMORY | MT_RW);
	mmap_add_region(0x100000, 0x100000, 0x10000,
			MT_MEMORY | MT_RW);
	mmap_add_region(0x40000000, 0x40000000, 0xc0000000,
			MT_MEMORY | MT_RW | MT_NS);

	mmap_add_region(BL31_BASE, BL31_BASE, BL31_RO_END - BL31_RO_START,
			MT_MEMORY | MT_RO);

	mmap_add_region(IMX_ROM_BASE, IMX_ROM_BASE,
			0x40000, MT_MEMORY | MT_RO);
	/* Map GPV */
	mmap_add_region(IMX_GPV_BASE, IMX_GPV_BASE, IMX_GPV_SIZE, MT_DEVICE | MT_RW);
	/* Map AIPS 1~3 */
	mmap_add_region(IMX_AIPS_BASE, IMX_AIPS_BASE, IMX_AIPS_SIZE, MT_DEVICE | MT_RW);
	/* map AIPS4 */
	mmap_add_region(0x32c00000, 0x32c00000, 0x400000, MT_DEVICE | MT_RW);
	/* map GIC */
	mmap_add_region(PLAT_GIC_BASE, PLAT_GIC_BASE, 0x100000,  MT_DEVICE | MT_RW);

#if USE_COHERENT_MEM
	mmap_add_region(BL31_COHERENT_RAM_BASE, BL31_COHERENT_RAM_BASE,
		BL31_COHERENT_RAM_LIMIT - BL31_COHERENT_RAM_BASE,
		MT_DEVICE | MT_RW);
#endif
	/* setup xlat table */
	init_xlat_tables();

	/* enable the MMU */
	enable_mmu_el3(0);
}

void bl31_platform_setup(void)
{
	/* init the GICv3 cpu and distributor interface */
	plat_gic_driver_init();
	plat_gic_init();

	/* gpc init */
	imx_gpc_init();
}

entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type)
{
	if (type == NON_SECURE)
		return &bl33_image_ep_info;
	if (type == SECURE)
		return &bl32_image_ep_info;

	return NULL;
}

unsigned int plat_get_syscnt_freq2(void)
{
	return COUNTER_FREQUENCY;
}

void bl31_plat_runtime_setup(void)
{
	return;
}