plat/hisilicon/hikey960/hikey960_bl2_setup.c - tf-a-mtk - Git at Google

 /*
  * Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */

 #include <assert.h>
 #include <errno.h>
 #include <string.h>

 #include <platform_def.h>

 #include <arch_helpers.h>
 #include <common/bl_common.h>
 #include <common/debug.h>
 #include <common/desc_image_load.h>
 #include <drivers/arm/pl011.h>
 #include <drivers/delay_timer.h>
 #include <drivers/dw_ufs.h>
 #include <drivers/generic_delay_timer.h>
 #include <drivers/ufs.h>
 #include <lib/mmio.h>
 #ifdef SPD_opteed
 #include <lib/optee_utils.h>
 #endif

 #include <hi3660.h>
 #include "hikey960_def.h"
 #include "hikey960_private.h"

 #define BL2_RW_BASE		(BL_CODE_END)

 static meminfo_t bl2_el3_tzram_layout;
 static console_pl011_t console;
 extern int load_lpm3(void);

 enum {
 	BOOT_MODE_RECOVERY = 0,
 	BOOT_MODE_NORMAL,
 	BOOT_MODE_MASK = 1,
 };

 /*******************************************************************************
  * Transfer SCP_BL2 from Trusted RAM using the SCP Download protocol.
  * Return 0 on success, -1 otherwise.
  ******************************************************************************/
 int plat_hikey960_bl2_handle_scp_bl2(image_info_t *scp_bl2_image_info)
 {
 	int i;
 	int *buf;

 	assert(scp_bl2_image_info->image_size < SCP_BL2_SIZE);

 	INFO("BL2: Initiating SCP_BL2 transfer to SCP\n");

 	INFO("BL2: SCP_BL2: 0x%lx@0x%x\n",
 	     scp_bl2_image_info->image_base,
 	     scp_bl2_image_info->image_size);

 	buf = (int *)scp_bl2_image_info->image_base;

 	INFO("BL2: SCP_BL2 HEAD:\n");
 	for (i = 0; i < 64; i += 4)
 		INFO("BL2: SCP_BL2 0x%x 0x%x 0x%x 0x%x\n",
 			buf[i], buf[i+1], buf[i+2], buf[i+3]);

 	buf = (int *)(scp_bl2_image_info->image_base +
 		      scp_bl2_image_info->image_size - 256);

 	INFO("BL2: SCP_BL2 TAIL:\n");
 	for (i = 0; i < 64; i += 4)
 		INFO("BL2: SCP_BL2 0x%x 0x%x 0x%x 0x%x\n",
 			buf[i], buf[i+1], buf[i+2], buf[i+3]);

 	INFO("BL2: SCP_BL2 transferred to SCP\n");

 	load_lpm3();
 	(void)buf;

 	return 0;
 }

 static void hikey960_ufs_reset(void)
 {
 	unsigned int data, mask;

 	mmio_write_32(CRG_PERDIS7_REG, 1 << 14);
 	mmio_clrbits_32(UFS_SYS_PHY_CLK_CTRL_REG, BIT_SYSCTRL_REF_CLOCK_EN);
 	do {
 		data = mmio_read_32(UFS_SYS_PHY_CLK_CTRL_REG);
 	} while (data & BIT_SYSCTRL_REF_CLOCK_EN);
 	/* use abb clk */
 	mmio_clrbits_32(UFS_SYS_UFS_SYSCTRL_REG, BIT_UFS_REFCLK_SRC_SE1);
 	mmio_clrbits_32(UFS_SYS_PHY_ISO_EN_REG, BIT_UFS_REFCLK_ISO_EN);
 	mmio_write_32(PCTRL_PERI_CTRL3_REG, (1 << 0) | (1 << 16));
 	mdelay(1);
 	mmio_write_32(CRG_PEREN7_REG, 1 << 14);
 	mmio_setbits_32(UFS_SYS_PHY_CLK_CTRL_REG, BIT_SYSCTRL_REF_CLOCK_EN);

 	mmio_write_32(CRG_PERRSTEN3_REG, PERI_UFS_BIT);
 	do {
 		data = mmio_read_32(CRG_PERRSTSTAT3_REG);
 	} while ((data & PERI_UFS_BIT) == 0);
 	mmio_setbits_32(UFS_SYS_PSW_POWER_CTRL_REG, BIT_UFS_PSW_MTCMOS_EN);
 	mdelay(1);
 	mmio_setbits_32(UFS_SYS_HC_LP_CTRL_REG, BIT_SYSCTRL_PWR_READY);
 	mmio_write_32(UFS_SYS_UFS_DEVICE_RESET_CTRL_REG,
 		      MASK_UFS_DEVICE_RESET);
 	/* clear SC_DIV_UFS_PERIBUS */
 	mask = SC_DIV_UFS_PERIBUS << 16;
 	mmio_write_32(CRG_CLKDIV17_REG, mask);
 	/* set SC_DIV_UFSPHY_CFG(3) */
 	mask = SC_DIV_UFSPHY_CFG_MASK << 16;
 	data = SC_DIV_UFSPHY_CFG(3);
 	mmio_write_32(CRG_CLKDIV16_REG, mask | data);
 	data = mmio_read_32(UFS_SYS_PHY_CLK_CTRL_REG);
 	data &= ~MASK_SYSCTRL_CFG_CLOCK_FREQ;
 	data |= 0x39;
 	mmio_write_32(UFS_SYS_PHY_CLK_CTRL_REG, data);
 	mmio_clrbits_32(UFS_SYS_PHY_CLK_CTRL_REG, MASK_SYSCTRL_REF_CLOCK_SEL);
 	mmio_setbits_32(UFS_SYS_CLOCK_GATE_BYPASS_REG,
 			MASK_UFS_CLK_GATE_BYPASS);
 	mmio_setbits_32(UFS_SYS_UFS_SYSCTRL_REG, MASK_UFS_SYSCTRL_BYPASS);

 	mmio_setbits_32(UFS_SYS_PSW_CLK_CTRL_REG, BIT_SYSCTRL_PSW_CLK_EN);
 	mmio_clrbits_32(UFS_SYS_PSW_POWER_CTRL_REG, BIT_UFS_PSW_ISO_CTRL);
 	mmio_clrbits_32(UFS_SYS_PHY_ISO_EN_REG, BIT_UFS_PHY_ISO_CTRL);
 	mmio_clrbits_32(UFS_SYS_HC_LP_CTRL_REG, BIT_SYSCTRL_LP_ISOL_EN);
 	mmio_write_32(CRG_PERRSTDIS3_REG, PERI_ARST_UFS_BIT);
 	mmio_setbits_32(UFS_SYS_RESET_CTRL_EN_REG, BIT_SYSCTRL_LP_RESET_N);
 	mdelay(1);
 	mmio_write_32(UFS_SYS_UFS_DEVICE_RESET_CTRL_REG,
 		      MASK_UFS_DEVICE_RESET | BIT_UFS_DEVICE_RESET);
 	mdelay(20);
 	mmio_write_32(UFS_SYS_UFS_DEVICE_RESET_CTRL_REG,
 		      0x03300330);

 	mmio_write_32(CRG_PERRSTDIS3_REG, PERI_UFS_BIT);
 	do {
 		data = mmio_read_32(CRG_PERRSTSTAT3_REG);
 	} while (data & PERI_UFS_BIT);
 }

 static void hikey960_init_ufs(void)
 {
 	dw_ufs_params_t ufs_params;

 	memset(&ufs_params, 0, sizeof(ufs_params_t));
 	ufs_params.reg_base = UFS_REG_BASE;
 	ufs_params.desc_base = HIKEY960_UFS_DESC_BASE;
 	ufs_params.desc_size = HIKEY960_UFS_DESC_SIZE;
 	hikey960_ufs_reset();
 	dw_ufs_init(&ufs_params);
 }

 /*******************************************************************************
  * Gets SPSR for BL32 entry
  ******************************************************************************/
 uint32_t hikey960_get_spsr_for_bl32_entry(void)
 {
 	/*
 	 * The Secure Payload Dispatcher service is responsible for
 	 * setting the SPSR prior to entry into the BL3-2 image.
 	 */
 	return 0;
 }

 /*******************************************************************************
  * Gets SPSR for BL33 entry
  ******************************************************************************/
 #ifdef __aarch64__
 uint32_t hikey960_get_spsr_for_bl33_entry(void)
 {
 	unsigned int mode;
 	uint32_t spsr;

 	/* Figure out what mode we enter the non-secure world in */
 	mode = (el_implemented(2) != EL_IMPL_NONE) ? MODE_EL2 : MODE_EL1;

 	/*
 	 * TODO: Consider the possibility of specifying the SPSR in
 	 * the FIP ToC and allowing the platform to have a say as
 	 * well.
 	 */
 	spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
 	return spsr;
 }
 #else
 uint32_t hikey960_get_spsr_for_bl33_entry(void)
 {
 	unsigned int hyp_status, mode, spsr;

 	hyp_status = GET_VIRT_EXT(read_id_pfr1());

 	mode = (hyp_status) ? MODE32_hyp : MODE32_svc;

 	/*
 	 * TODO: Consider the possibility of specifying the SPSR in
 	 * the FIP ToC and allowing the platform to have a say as
 	 * well.
 	 */
 	spsr = SPSR_MODE32(mode, plat_get_ns_image_entrypoint() & 0x1,
 			SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS);
 	return spsr;
 }
 #endif /* __aarch64__ */

 int hikey960_bl2_handle_post_image_load(unsigned int image_id)
 {
 	int err = 0;
 	bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
 #ifdef SPD_opteed
 	bl_mem_params_node_t *pager_mem_params = NULL;
 	bl_mem_params_node_t *paged_mem_params = NULL;
 #endif
 	assert(bl_mem_params);

 	switch (image_id) {
 #ifdef __aarch64__
 	case BL32_IMAGE_ID:
 #ifdef SPD_opteed
 		pager_mem_params = get_bl_mem_params_node(BL32_EXTRA1_IMAGE_ID);
 		assert(pager_mem_params);

 		paged_mem_params = get_bl_mem_params_node(BL32_EXTRA2_IMAGE_ID);
 		assert(paged_mem_params);

 		err = parse_optee_header(&bl_mem_params->ep_info,
 				&pager_mem_params->image_info,
 				&paged_mem_params->image_info);
 		if (err != 0) {
 			WARN("OPTEE header parse error.\n");
 		}
 #endif
 		bl_mem_params->ep_info.spsr = hikey960_get_spsr_for_bl32_entry();
 		break;
 #endif

 	case BL33_IMAGE_ID:
 		/* BL33 expects to receive the primary CPU MPID (through r0) */
 		bl_mem_params->ep_info.args.arg0 = 0xffff & read_mpidr();
 		bl_mem_params->ep_info.spsr = hikey960_get_spsr_for_bl33_entry();
 		break;

 #ifdef SCP_BL2_BASE
 	case SCP_BL2_IMAGE_ID:
 		/* The subsequent handling of SCP_BL2 is platform specific */
 		err = plat_hikey960_bl2_handle_scp_bl2(&bl_mem_params->image_info);
 		if (err) {
 			WARN("Failure in platform-specific handling of SCP_BL2 image.\n");
 		}
 		break;
 #endif
 	default:
 		/* Do nothing in default case */
 		break;
 	}

 	return err;
 }

 /*******************************************************************************
  * This function can be used by the platforms to update/use image
  * information for given `image_id`.
  ******************************************************************************/
 int bl2_plat_handle_post_image_load(unsigned int image_id)
 {
 	return hikey960_bl2_handle_post_image_load(image_id);
 }

 void bl2_el3_early_platform_setup(u_register_t arg1, u_register_t arg2,
 				  u_register_t arg3, u_register_t arg4)
 {
 	unsigned int id, uart_base;

 	generic_delay_timer_init();
 	hikey960_read_boardid(&id);
 	if (id == 5300)
 		uart_base = PL011_UART5_BASE;
 	else
 		uart_base = PL011_UART6_BASE;
 	/* Initialize the console to provide early debug support */
 	console_pl011_register(uart_base, PL011_UART_CLK_IN_HZ,
 			       PL011_BAUDRATE, &console);
 	/*
 	 * Allow BL2 to see the whole Trusted RAM.
 	 */
 	bl2_el3_tzram_layout.total_base = BL2_RW_BASE;
 	bl2_el3_tzram_layout.total_size = BL31_LIMIT - BL2_RW_BASE;
 }

 void bl2_el3_plat_arch_setup(void)
 {
 	hikey960_init_mmu_el3(bl2_el3_tzram_layout.total_base,
 			      bl2_el3_tzram_layout.total_size,
 			      BL_CODE_BASE,
 			      BL_CODE_END,
 			      BL_COHERENT_RAM_BASE,
 			      BL_COHERENT_RAM_END);
 }

 void bl2_platform_setup(void)
 {
 	/* disable WDT0 */
 	if (mmio_read_32(WDT0_REG_BASE + WDT_LOCK_OFFSET) == WDT_LOCKED) {
 		mmio_write_32(WDT0_REG_BASE + WDT_LOCK_OFFSET, WDT_UNLOCK);
 		mmio_write_32(WDT0_REG_BASE + WDT_CONTROL_OFFSET, 0);
 		mmio_write_32(WDT0_REG_BASE + WDT_LOCK_OFFSET, 0);
 	}
 	hikey960_clk_init();
 	hikey960_pmu_init();
 	hikey960_regulator_enable();
 	hikey960_tzc_init();
 	hikey960_peri_init();
 	hikey960_pinmux_init();
 	hikey960_gpio_init();
 	hikey960_init_ufs();
 	hikey960_io_setup();
 }
	/*
	* Copyright (c) 2017-2018, ARM Limited and Contributors. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <assert.h>
	#include <errno.h>
	#include <string.h>

	#include <platform_def.h>

	#include <arch_helpers.h>
	#include <common/bl_common.h>
	#include <common/debug.h>
	#include <common/desc_image_load.h>
	#include <drivers/arm/pl011.h>
	#include <drivers/delay_timer.h>
	#include <drivers/dw_ufs.h>
	#include <drivers/generic_delay_timer.h>
	#include <drivers/ufs.h>
	#include <lib/mmio.h>
	#ifdef SPD_opteed
	#include <lib/optee_utils.h>
	#endif

	#include <hi3660.h>
	#include "hikey960_def.h"
	#include "hikey960_private.h"

	#define BL2_RW_BASE (BL_CODE_END)

	static meminfo_t bl2_el3_tzram_layout;
	static console_pl011_t console;
	extern int load_lpm3(void);

	enum {
	BOOT_MODE_RECOVERY = 0,
	BOOT_MODE_NORMAL,
	BOOT_MODE_MASK = 1,
	};

	/*******************************************************************************
	* Transfer SCP_BL2 from Trusted RAM using the SCP Download protocol.
	* Return 0 on success, -1 otherwise.
	******************************************************************************/
	int plat_hikey960_bl2_handle_scp_bl2(image_info_t *scp_bl2_image_info)
	{
	int i;
	int *buf;

	assert(scp_bl2_image_info->image_size < SCP_BL2_SIZE);

	INFO("BL2: Initiating SCP_BL2 transfer to SCP\n");

	INFO("BL2: SCP_BL2: 0x%lx@0x%x\n",
	scp_bl2_image_info->image_base,
	scp_bl2_image_info->image_size);

	buf = (int *)scp_bl2_image_info->image_base;

	INFO("BL2: SCP_BL2 HEAD:\n");
	for (i = 0; i < 64; i += 4)
	INFO("BL2: SCP_BL2 0x%x 0x%x 0x%x 0x%x\n",
	buf[i], buf[i+1], buf[i+2], buf[i+3]);

	buf = (int *)(scp_bl2_image_info->image_base +
	scp_bl2_image_info->image_size - 256);

	INFO("BL2: SCP_BL2 TAIL:\n");
	for (i = 0; i < 64; i += 4)
	INFO("BL2: SCP_BL2 0x%x 0x%x 0x%x 0x%x\n",
	buf[i], buf[i+1], buf[i+2], buf[i+3]);

	INFO("BL2: SCP_BL2 transferred to SCP\n");

	load_lpm3();
	(void)buf;

	return 0;
	}

	static void hikey960_ufs_reset(void)
	{
	unsigned int data, mask;

	mmio_write_32(CRG_PERDIS7_REG, 1 << 14);
	mmio_clrbits_32(UFS_SYS_PHY_CLK_CTRL_REG, BIT_SYSCTRL_REF_CLOCK_EN);
	do {
	data = mmio_read_32(UFS_SYS_PHY_CLK_CTRL_REG);
	} while (data & BIT_SYSCTRL_REF_CLOCK_EN);
	/* use abb clk */
	mmio_clrbits_32(UFS_SYS_UFS_SYSCTRL_REG, BIT_UFS_REFCLK_SRC_SE1);
	mmio_clrbits_32(UFS_SYS_PHY_ISO_EN_REG, BIT_UFS_REFCLK_ISO_EN);
	mmio_write_32(PCTRL_PERI_CTRL3_REG, (1 << 0) \| (1 << 16));
	mdelay(1);
	mmio_write_32(CRG_PEREN7_REG, 1 << 14);
	mmio_setbits_32(UFS_SYS_PHY_CLK_CTRL_REG, BIT_SYSCTRL_REF_CLOCK_EN);

	mmio_write_32(CRG_PERRSTEN3_REG, PERI_UFS_BIT);
	do {
	data = mmio_read_32(CRG_PERRSTSTAT3_REG);
	} while ((data & PERI_UFS_BIT) == 0);
	mmio_setbits_32(UFS_SYS_PSW_POWER_CTRL_REG, BIT_UFS_PSW_MTCMOS_EN);
	mdelay(1);
	mmio_setbits_32(UFS_SYS_HC_LP_CTRL_REG, BIT_SYSCTRL_PWR_READY);
	mmio_write_32(UFS_SYS_UFS_DEVICE_RESET_CTRL_REG,
	MASK_UFS_DEVICE_RESET);
	/* clear SC_DIV_UFS_PERIBUS */
	mask = SC_DIV_UFS_PERIBUS << 16;
	mmio_write_32(CRG_CLKDIV17_REG, mask);
	/* set SC_DIV_UFSPHY_CFG(3) */
	mask = SC_DIV_UFSPHY_CFG_MASK << 16;
	data = SC_DIV_UFSPHY_CFG(3);
	mmio_write_32(CRG_CLKDIV16_REG, mask \| data);
	data = mmio_read_32(UFS_SYS_PHY_CLK_CTRL_REG);
	data &= ~MASK_SYSCTRL_CFG_CLOCK_FREQ;
	data \|= 0x39;
	mmio_write_32(UFS_SYS_PHY_CLK_CTRL_REG, data);
	mmio_clrbits_32(UFS_SYS_PHY_CLK_CTRL_REG, MASK_SYSCTRL_REF_CLOCK_SEL);
	mmio_setbits_32(UFS_SYS_CLOCK_GATE_BYPASS_REG,
	MASK_UFS_CLK_GATE_BYPASS);
	mmio_setbits_32(UFS_SYS_UFS_SYSCTRL_REG, MASK_UFS_SYSCTRL_BYPASS);

	mmio_setbits_32(UFS_SYS_PSW_CLK_CTRL_REG, BIT_SYSCTRL_PSW_CLK_EN);
	mmio_clrbits_32(UFS_SYS_PSW_POWER_CTRL_REG, BIT_UFS_PSW_ISO_CTRL);
	mmio_clrbits_32(UFS_SYS_PHY_ISO_EN_REG, BIT_UFS_PHY_ISO_CTRL);
	mmio_clrbits_32(UFS_SYS_HC_LP_CTRL_REG, BIT_SYSCTRL_LP_ISOL_EN);
	mmio_write_32(CRG_PERRSTDIS3_REG, PERI_ARST_UFS_BIT);
	mmio_setbits_32(UFS_SYS_RESET_CTRL_EN_REG, BIT_SYSCTRL_LP_RESET_N);
	mdelay(1);
	mmio_write_32(UFS_SYS_UFS_DEVICE_RESET_CTRL_REG,
	MASK_UFS_DEVICE_RESET \| BIT_UFS_DEVICE_RESET);
	mdelay(20);
	mmio_write_32(UFS_SYS_UFS_DEVICE_RESET_CTRL_REG,
	0x03300330);

	mmio_write_32(CRG_PERRSTDIS3_REG, PERI_UFS_BIT);
	do {
	data = mmio_read_32(CRG_PERRSTSTAT3_REG);
	} while (data & PERI_UFS_BIT);
	}

	static void hikey960_init_ufs(void)
	{
	dw_ufs_params_t ufs_params;

	memset(&ufs_params, 0, sizeof(ufs_params_t));
	ufs_params.reg_base = UFS_REG_BASE;
	ufs_params.desc_base = HIKEY960_UFS_DESC_BASE;
	ufs_params.desc_size = HIKEY960_UFS_DESC_SIZE;
	hikey960_ufs_reset();
	dw_ufs_init(&ufs_params);
	}

	/*******************************************************************************
	* Gets SPSR for BL32 entry
	******************************************************************************/
	uint32_t hikey960_get_spsr_for_bl32_entry(void)
	{
	/*
	* The Secure Payload Dispatcher service is responsible for
	* setting the SPSR prior to entry into the BL3-2 image.
	*/
	return 0;
	}

	/*******************************************************************************
	* Gets SPSR for BL33 entry
	******************************************************************************/
	#ifdef __aarch64__
	uint32_t hikey960_get_spsr_for_bl33_entry(void)
	{
	unsigned int mode;
	uint32_t spsr;

	/* Figure out what mode we enter the non-secure world in */
	mode = (el_implemented(2) != EL_IMPL_NONE) ? MODE_EL2 : MODE_EL1;

	/*
	* TODO: Consider the possibility of specifying the SPSR in
	* the FIP ToC and allowing the platform to have a say as
	* well.
	*/
	spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
	return spsr;
	}
	#else
	uint32_t hikey960_get_spsr_for_bl33_entry(void)
	{
	unsigned int hyp_status, mode, spsr;

	hyp_status = GET_VIRT_EXT(read_id_pfr1());

	mode = (hyp_status) ? MODE32_hyp : MODE32_svc;

	/*
	* TODO: Consider the possibility of specifying the SPSR in
	* the FIP ToC and allowing the platform to have a say as
	* well.
	*/
	spsr = SPSR_MODE32(mode, plat_get_ns_image_entrypoint() & 0x1,
	SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS);
	return spsr;
	}
	#endif /* __aarch64__ */

	int hikey960_bl2_handle_post_image_load(unsigned int image_id)
	{
	int err = 0;
	bl_mem_params_node_t *bl_mem_params = get_bl_mem_params_node(image_id);
	#ifdef SPD_opteed
	bl_mem_params_node_t *pager_mem_params = NULL;
	bl_mem_params_node_t *paged_mem_params = NULL;
	#endif
	assert(bl_mem_params);

	switch (image_id) {
	#ifdef __aarch64__
	case BL32_IMAGE_ID:
	#ifdef SPD_opteed
	pager_mem_params = get_bl_mem_params_node(BL32_EXTRA1_IMAGE_ID);
	assert(pager_mem_params);

	paged_mem_params = get_bl_mem_params_node(BL32_EXTRA2_IMAGE_ID);
	assert(paged_mem_params);

	err = parse_optee_header(&bl_mem_params->ep_info,
	&pager_mem_params->image_info,
	&paged_mem_params->image_info);
	if (err != 0) {
	WARN("OPTEE header parse error.\n");
	}
	#endif
	bl_mem_params->ep_info.spsr = hikey960_get_spsr_for_bl32_entry();
	break;
	#endif

	case BL33_IMAGE_ID:
	/* BL33 expects to receive the primary CPU MPID (through r0) */
	bl_mem_params->ep_info.args.arg0 = 0xffff & read_mpidr();
	bl_mem_params->ep_info.spsr = hikey960_get_spsr_for_bl33_entry();
	break;

	#ifdef SCP_BL2_BASE
	case SCP_BL2_IMAGE_ID:
	/* The subsequent handling of SCP_BL2 is platform specific */
	err = plat_hikey960_bl2_handle_scp_bl2(&bl_mem_params->image_info);
	if (err) {
	WARN("Failure in platform-specific handling of SCP_BL2 image.\n");
	}
	break;
	#endif
	default:
	/* Do nothing in default case */
	break;
	}

	return err;
	}

	/*******************************************************************************
	* This function can be used by the platforms to update/use image
	* information for given `image_id`.
	******************************************************************************/
	int bl2_plat_handle_post_image_load(unsigned int image_id)
	{
	return hikey960_bl2_handle_post_image_load(image_id);
	}

	void bl2_el3_early_platform_setup(u_register_t arg1, u_register_t arg2,
	u_register_t arg3, u_register_t arg4)
	{
	unsigned int id, uart_base;

	generic_delay_timer_init();
	hikey960_read_boardid(&id);
	if (id == 5300)
	uart_base = PL011_UART5_BASE;
	else
	uart_base = PL011_UART6_BASE;
	/* Initialize the console to provide early debug support */
	console_pl011_register(uart_base, PL011_UART_CLK_IN_HZ,
	PL011_BAUDRATE, &console);
	/*
	* Allow BL2 to see the whole Trusted RAM.
	*/
	bl2_el3_tzram_layout.total_base = BL2_RW_BASE;
	bl2_el3_tzram_layout.total_size = BL31_LIMIT - BL2_RW_BASE;
	}

	void bl2_el3_plat_arch_setup(void)
	{
	hikey960_init_mmu_el3(bl2_el3_tzram_layout.total_base,
	bl2_el3_tzram_layout.total_size,
	BL_CODE_BASE,
	BL_CODE_END,
	BL_COHERENT_RAM_BASE,
	BL_COHERENT_RAM_END);
	}

	void bl2_platform_setup(void)
	{
	/* disable WDT0 */
	if (mmio_read_32(WDT0_REG_BASE + WDT_LOCK_OFFSET) == WDT_LOCKED) {
	mmio_write_32(WDT0_REG_BASE + WDT_LOCK_OFFSET, WDT_UNLOCK);
	mmio_write_32(WDT0_REG_BASE + WDT_CONTROL_OFFSET, 0);
	mmio_write_32(WDT0_REG_BASE + WDT_LOCK_OFFSET, 0);
	}
	hikey960_clk_init();
	hikey960_pmu_init();
	hikey960_regulator_enable();
	hikey960_tzc_init();
	hikey960_peri_init();
	hikey960_pinmux_init();
	hikey960_gpio_init();
	hikey960_init_ufs();
	hikey960_io_setup();
	}