plat/hisilicon/hikey/hikey_bl2_setup.c - filogic/atf - Gitiles

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

 #include <arch_helpers.h>
 #include <assert.h>
 #include <bl_common.h>
 #include <console.h>
 #include <debug.h>
 #include <dw_mmc.h>
 #include <emmc.h>
 #include <errno.h>
 #include <hi6220.h>
 #include <hisi_mcu.h>
 #include <hisi_sram_map.h>
 #include <mmio.h>
 #include <platform_def.h>
 #include <sp804_delay_timer.h>
 #include <string.h>

 #include "hikey_def.h"
 #include "hikey_private.h"

 /*
  * The next 2 constants identify the extents of the code & RO data region.
  * These addresses are used by the MMU setup code and therefore they must be
  * page-aligned.  It is the responsibility of the linker script to ensure that
  * __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses.
  */
 #define BL2_RO_BASE (unsigned long)(&__RO_START__)
 #define BL2_RO_LIMIT (unsigned long)(&__RO_END__)

 /*
  * The next 2 constants identify the extents of the coherent memory region.
  * These addresses are used by the MMU setup code and therefore they must be
  * page-aligned.  It is the responsibility of the linker script to ensure that
  * __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to
  * page-aligned addresses.
  */
 #define BL2_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
 #define BL2_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)

 static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);

 typedef struct bl2_to_bl31_params_mem {
 	bl31_params_t		bl31_params;
 	image_info_t		bl31_image_info;
 	image_info_t		bl32_image_info;
 	image_info_t		bl33_image_info;
 	entry_point_info_t	bl33_ep_info;
 	entry_point_info_t	bl32_ep_info;
 	entry_point_info_t	bl31_ep_info;
 } bl2_to_bl31_params_mem_t;

 static bl2_to_bl31_params_mem_t bl31_params_mem;

 meminfo_t *bl2_plat_sec_mem_layout(void)
 {
 	return &bl2_tzram_layout;
 }

 void bl2_plat_get_scp_bl2_meminfo(meminfo_t *scp_bl2_meminfo)
 {
 	scp_bl2_meminfo->total_base = SCP_BL2_BASE;
 	scp_bl2_meminfo->total_size = SCP_BL2_SIZE;
 	scp_bl2_meminfo->free_base = SCP_BL2_BASE;
 	scp_bl2_meminfo->free_size = SCP_BL2_SIZE;
 }

 int bl2_plat_handle_scp_bl2(struct image_info *scp_bl2_image_info)
 {
 	/* Enable MCU SRAM */
 	hisi_mcu_enable_sram();

 	/* Load MCU binary into SRAM */
 	hisi_mcu_load_image(scp_bl2_image_info->image_base,
 			    scp_bl2_image_info->image_size);
 	/* Let MCU running */
 	hisi_mcu_start_run();

 	INFO("%s: MCU PC is at 0x%x\n",
 	     __func__, mmio_read_32(AO_SC_MCU_SUBSYS_STAT2));
 	INFO("%s: AO_SC_PERIPH_CLKSTAT4 is 0x%x\n",
 	     __func__, mmio_read_32(AO_SC_PERIPH_CLKSTAT4));
 	return 0;
 }

 bl31_params_t *bl2_plat_get_bl31_params(void)
 {
 	bl31_params_t *bl2_to_bl31_params = NULL;

 	/*
 	 * Initialise the memory for all the arguments that needs to
 	 * be passed to BL3-1
 	 */
 	memset(&bl31_params_mem, 0, sizeof(bl2_to_bl31_params_mem_t));

 	/* Assign memory for TF related information */
 	bl2_to_bl31_params = &bl31_params_mem.bl31_params;
 	SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0);

 	/* Fill BL3-1 related information */
 	bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY,
 		VERSION_1, 0);

 	/* Fill BL3-2 related information if it exists */
 #if BL32_BASE
 	bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, PARAM_EP,
 		VERSION_1, 0);
 	bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, PARAM_IMAGE_BINARY,
 		VERSION_1, 0);
 #endif

 	/* Fill BL3-3 related information */
 	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
 		PARAM_EP, VERSION_1, 0);

 	/* BL3-3 expects to receive the primary CPU MPID (through x0) */
 	bl2_to_bl31_params->bl33_ep_info->args.arg0 = 0xffff & read_mpidr();

 	bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
 	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,
 		VERSION_1, 0);

 	return bl2_to_bl31_params;
 }

 struct entry_point_info *bl2_plat_get_bl31_ep_info(void)
 {
 	return &bl31_params_mem.bl31_ep_info;
 }

 void bl2_plat_set_bl31_ep_info(image_info_t *image,
 			       entry_point_info_t *bl31_ep_info)
 {
 	SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE);
 	bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
 				       DISABLE_ALL_EXCEPTIONS);
 }

 /*******************************************************************************
  * Before calling this function BL32 is loaded in memory and its entrypoint
  * is set by load_image. This is a placeholder for the platform to change
  * the entrypoint of BL32 and set SPSR and security state.
  * On Hikey we only set the security state of the entrypoint
  ******************************************************************************/
 #ifdef BL32_BASE
 void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
 					entry_point_info_t *bl32_ep_info)
 {
 	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
 	/*
 	 * The Secure Payload Dispatcher service is responsible for
 	 * setting the SPSR prior to entry into the BL32 image.
 	 */
 	bl32_ep_info->spsr = 0;
 }

 /*******************************************************************************
  * Populate the extents of memory available for loading BL32
  ******************************************************************************/
 void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
 {
 	/*
 	 * Populate the extents of memory available for loading BL32.
 	 */
 	bl32_meminfo->total_base = BL32_BASE;
 	bl32_meminfo->free_base = BL32_BASE;
 	bl32_meminfo->total_size =
 			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
 	bl32_meminfo->free_size =
 			(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
 }
 #endif /* BL32_BASE */

 void bl2_plat_set_bl33_ep_info(image_info_t *image,
 			       entry_point_info_t *bl33_ep_info)
 {
 	unsigned long el_status;
 	unsigned int mode;

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

 	if (el_status)
 		mode = MODE_EL2;
 	else
 		mode = MODE_EL1;

 	/*
 	 * TODO: Consider the possibility of specifying the SPSR in
 	 * the FIP ToC and allowing the platform to have a say as
 	 * well.
 	 */
 	bl33_ep_info->spsr = SPSR_64(mode, MODE_SP_ELX,
 				       DISABLE_ALL_EXCEPTIONS);
 	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
 }

 void bl2_plat_flush_bl31_params(void)
 {
 	flush_dcache_range((unsigned long)&bl31_params_mem,
 			   sizeof(bl2_to_bl31_params_mem_t));
 }

 void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
 {
 	bl33_meminfo->total_base = DDR_BASE;
 	bl33_meminfo->total_size = DDR_SIZE;
 	bl33_meminfo->free_base = DDR_BASE;
 	bl33_meminfo->free_size = DDR_SIZE;
 }

 static void reset_dwmmc_clk(void)
 {
 	unsigned int data;

 	/* disable mmc0 bus clock */
 	mmio_write_32(PERI_SC_PERIPH_CLKDIS0, PERI_CLK0_MMC0);
 	do {
 		data = mmio_read_32(PERI_SC_PERIPH_CLKSTAT0);
 	} while (data & PERI_CLK0_MMC0);
 	/* enable mmc0 bus clock */
 	mmio_write_32(PERI_SC_PERIPH_CLKEN0, PERI_CLK0_MMC0);
 	do {
 		data = mmio_read_32(PERI_SC_PERIPH_CLKSTAT0);
 	} while (!(data & PERI_CLK0_MMC0));
 	/* reset mmc0 clock domain */
 	mmio_write_32(PERI_SC_PERIPH_RSTEN0, PERI_RST0_MMC0);

 	/* bypass mmc0 clock phase */
 	data = mmio_read_32(PERI_SC_PERIPH_CTRL2);
 	data |= 3;
 	mmio_write_32(PERI_SC_PERIPH_CTRL2, data);

 	/* disable low power */
 	data = mmio_read_32(PERI_SC_PERIPH_CTRL13);
 	data |= 1 << 3;
 	mmio_write_32(PERI_SC_PERIPH_CTRL13, data);
 	do {
 		data = mmio_read_32(PERI_SC_PERIPH_RSTSTAT0);
 	} while (!(data & PERI_RST0_MMC0));

 	/* unreset mmc0 clock domain */
 	mmio_write_32(PERI_SC_PERIPH_RSTDIS0, PERI_RST0_MMC0);
 	do {
 		data = mmio_read_32(PERI_SC_PERIPH_RSTSTAT0);
 	} while (data & PERI_RST0_MMC0);
 }

 static void hikey_boardid_init(void)
 {
 	u_register_t midr;

 	midr = read_midr();
 	mmio_write_32(MEMORY_AXI_CHIP_ADDR, midr);
 	INFO("[BDID] [%x] midr: 0x%x\n", MEMORY_AXI_CHIP_ADDR,
 	     (unsigned int)midr);

 	mmio_write_32(MEMORY_AXI_BOARD_TYPE_ADDR, 0);
 	mmio_write_32(MEMORY_AXI_BOARD_ID_ADDR, 0x2b);

 	mmio_write_32(ACPU_ARM64_FLAGA, 0x1234);
 	mmio_write_32(ACPU_ARM64_FLAGB, 0x5678);
 }

 static void hikey_sd_init(void)
 {
 	/* switch pinmux to SD */
 	mmio_write_32(IOMG_SD_CLK, IOMG_MUX_FUNC0);
 	mmio_write_32(IOMG_SD_CMD, IOMG_MUX_FUNC0);
 	mmio_write_32(IOMG_SD_DATA0, IOMG_MUX_FUNC0);
 	mmio_write_32(IOMG_SD_DATA1, IOMG_MUX_FUNC0);
 	mmio_write_32(IOMG_SD_DATA2, IOMG_MUX_FUNC0);
 	mmio_write_32(IOMG_SD_DATA3, IOMG_MUX_FUNC0);

 	mmio_write_32(IOCG_SD_CLK, IOCG_INPUT_16MA);
 	mmio_write_32(IOCG_SD_CMD, IOCG_INPUT_12MA);
 	mmio_write_32(IOCG_SD_DATA0, IOCG_INPUT_12MA);
 	mmio_write_32(IOCG_SD_DATA1, IOCG_INPUT_12MA);
 	mmio_write_32(IOCG_SD_DATA2, IOCG_INPUT_12MA);
 	mmio_write_32(IOCG_SD_DATA3, IOCG_INPUT_12MA);

 	/* set SD Card detect as nopull */
 	mmio_write_32(IOCG_GPIO8, 0);
 }

 static void hikey_jumper_init(void)
 {
 	/* set jumper detect as nopull */
 	mmio_write_32(IOCG_GPIO24, 0);
 	/* set jumper detect as GPIO */
 	mmio_write_32(IOMG_GPIO24, IOMG_MUX_FUNC0);
 }

 void bl2_early_platform_setup(meminfo_t *mem_layout)
 {
 	dw_mmc_params_t params;

 	/* Initialize the console to provide early debug support */
 	console_init(CONSOLE_BASE, PL011_UART_CLK_IN_HZ, PL011_BAUDRATE);

 	/* Setup the BL2 memory layout */
 	bl2_tzram_layout = *mem_layout;

 	/* Clear SRAM since it'll be used by MCU right now. */
 	memset((void *)SRAM_BASE, 0, SRAM_SIZE);

 	sp804_timer_init(SP804_TIMER0_BASE, 10, 192);
 	dsb();
 	hikey_ddr_init();

 	hikey_boardid_init();
 	init_acpu_dvfs();
 	hikey_sd_init();
 	hikey_jumper_init();

 	reset_dwmmc_clk();
 	memset(&params, 0, sizeof(dw_mmc_params_t));
 	params.reg_base = DWMMC0_BASE;
 	params.desc_base = HIKEY_MMC_DESC_BASE;
 	params.desc_size = 1 << 20;
 	params.clk_rate = 24 * 1000 * 1000;
 	params.bus_width = EMMC_BUS_WIDTH_8;
 	params.flags = EMMC_FLAG_CMD23;
 	dw_mmc_init(&params);

 	hikey_io_setup();
 }

 void bl2_plat_arch_setup(void)
 {
 	hikey_init_mmu_el1(bl2_tzram_layout.total_base,
 			   bl2_tzram_layout.total_size,
 			   BL2_RO_BASE,
 			   BL2_RO_LIMIT,
 			   BL2_COHERENT_RAM_BASE,
 			   BL2_COHERENT_RAM_LIMIT);
 }

 void bl2_platform_setup(void)
 {
 }
	/*
	* Copyright (c) 2017, ARM Limited and Contributors. All rights reserved.
	*
	* SPDX-License-Identifier: BSD-3-Clause
	*/

	#include <arch_helpers.h>
	#include <assert.h>
	#include <bl_common.h>
	#include <console.h>
	#include <debug.h>
	#include <dw_mmc.h>
	#include <emmc.h>
	#include <errno.h>
	#include <hi6220.h>
	#include <hisi_mcu.h>
	#include <hisi_sram_map.h>
	#include <mmio.h>
	#include <platform_def.h>
	#include <sp804_delay_timer.h>
	#include <string.h>

	#include "hikey_def.h"
	#include "hikey_private.h"

	/*
	* The next 2 constants identify the extents of the code & RO data region.
	* These addresses are used by the MMU setup code and therefore they must be
	* page-aligned. It is the responsibility of the linker script to ensure that
	* __RO_START__ and __RO_END__ linker symbols refer to page-aligned addresses.
	*/
	#define BL2_RO_BASE (unsigned long)(&__RO_START__)
	#define BL2_RO_LIMIT (unsigned long)(&__RO_END__)

	/*
	* The next 2 constants identify the extents of the coherent memory region.
	* These addresses are used by the MMU setup code and therefore they must be
	* page-aligned. It is the responsibility of the linker script to ensure that
	* __COHERENT_RAM_START__ and __COHERENT_RAM_END__ linker symbols refer to
	* page-aligned addresses.
	*/
	#define BL2_COHERENT_RAM_BASE (unsigned long)(&__COHERENT_RAM_START__)
	#define BL2_COHERENT_RAM_LIMIT (unsigned long)(&__COHERENT_RAM_END__)

	static meminfo_t bl2_tzram_layout __aligned(CACHE_WRITEBACK_GRANULE);

	typedef struct bl2_to_bl31_params_mem {
	bl31_params_t bl31_params;
	image_info_t bl31_image_info;
	image_info_t bl32_image_info;
	image_info_t bl33_image_info;
	entry_point_info_t bl33_ep_info;
	entry_point_info_t bl32_ep_info;
	entry_point_info_t bl31_ep_info;
	} bl2_to_bl31_params_mem_t;

	static bl2_to_bl31_params_mem_t bl31_params_mem;

	meminfo_t *bl2_plat_sec_mem_layout(void)
	{
	return &bl2_tzram_layout;
	}

	void bl2_plat_get_scp_bl2_meminfo(meminfo_t *scp_bl2_meminfo)
	{
	scp_bl2_meminfo->total_base = SCP_BL2_BASE;
	scp_bl2_meminfo->total_size = SCP_BL2_SIZE;
	scp_bl2_meminfo->free_base = SCP_BL2_BASE;
	scp_bl2_meminfo->free_size = SCP_BL2_SIZE;
	}

	int bl2_plat_handle_scp_bl2(struct image_info *scp_bl2_image_info)
	{
	/* Enable MCU SRAM */
	hisi_mcu_enable_sram();

	/* Load MCU binary into SRAM */
	hisi_mcu_load_image(scp_bl2_image_info->image_base,
	scp_bl2_image_info->image_size);
	/* Let MCU running */
	hisi_mcu_start_run();

	INFO("%s: MCU PC is at 0x%x\n",
	__func__, mmio_read_32(AO_SC_MCU_SUBSYS_STAT2));
	INFO("%s: AO_SC_PERIPH_CLKSTAT4 is 0x%x\n",
	__func__, mmio_read_32(AO_SC_PERIPH_CLKSTAT4));
	return 0;
	}

	bl31_params_t *bl2_plat_get_bl31_params(void)
	{
	bl31_params_t *bl2_to_bl31_params = NULL;

	/*
	* Initialise the memory for all the arguments that needs to
	* be passed to BL3-1
	*/
	memset(&bl31_params_mem, 0, sizeof(bl2_to_bl31_params_mem_t));

	/* Assign memory for TF related information */
	bl2_to_bl31_params = &bl31_params_mem.bl31_params;
	SET_PARAM_HEAD(bl2_to_bl31_params, PARAM_BL31, VERSION_1, 0);

	/* Fill BL3-1 related information */
	bl2_to_bl31_params->bl31_image_info = &bl31_params_mem.bl31_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl31_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);

	/* Fill BL3-2 related information if it exists */
	#if BL32_BASE
	bl2_to_bl31_params->bl32_ep_info = &bl31_params_mem.bl32_ep_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_ep_info, PARAM_EP,
	VERSION_1, 0);
	bl2_to_bl31_params->bl32_image_info = &bl31_params_mem.bl32_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl32_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);
	#endif

	/* Fill BL3-3 related information */
	bl2_to_bl31_params->bl33_ep_info = &bl31_params_mem.bl33_ep_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_ep_info,
	PARAM_EP, VERSION_1, 0);

	/* BL3-3 expects to receive the primary CPU MPID (through x0) */
	bl2_to_bl31_params->bl33_ep_info->args.arg0 = 0xffff & read_mpidr();

	bl2_to_bl31_params->bl33_image_info = &bl31_params_mem.bl33_image_info;
	SET_PARAM_HEAD(bl2_to_bl31_params->bl33_image_info, PARAM_IMAGE_BINARY,
	VERSION_1, 0);

	return bl2_to_bl31_params;
	}

	struct entry_point_info *bl2_plat_get_bl31_ep_info(void)
	{
	return &bl31_params_mem.bl31_ep_info;
	}

	void bl2_plat_set_bl31_ep_info(image_info_t *image,
	entry_point_info_t *bl31_ep_info)
	{
	SET_SECURITY_STATE(bl31_ep_info->h.attr, SECURE);
	bl31_ep_info->spsr = SPSR_64(MODE_EL3, MODE_SP_ELX,
	DISABLE_ALL_EXCEPTIONS);
	}

	/*******************************************************************************
	* Before calling this function BL32 is loaded in memory and its entrypoint
	* is set by load_image. This is a placeholder for the platform to change
	* the entrypoint of BL32 and set SPSR and security state.
	* On Hikey we only set the security state of the entrypoint
	******************************************************************************/
	#ifdef BL32_BASE
	void bl2_plat_set_bl32_ep_info(image_info_t *bl32_image_info,
	entry_point_info_t *bl32_ep_info)
	{
	SET_SECURITY_STATE(bl32_ep_info->h.attr, SECURE);
	/*
	* The Secure Payload Dispatcher service is responsible for
	* setting the SPSR prior to entry into the BL32 image.
	*/
	bl32_ep_info->spsr = 0;
	}

	/*******************************************************************************
	* Populate the extents of memory available for loading BL32
	******************************************************************************/
	void bl2_plat_get_bl32_meminfo(meminfo_t *bl32_meminfo)
	{
	/*
	* Populate the extents of memory available for loading BL32.
	*/
	bl32_meminfo->total_base = BL32_BASE;
	bl32_meminfo->free_base = BL32_BASE;
	bl32_meminfo->total_size =
	(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
	bl32_meminfo->free_size =
	(TSP_SEC_MEM_BASE + TSP_SEC_MEM_SIZE) - BL32_BASE;
	}
	#endif /* BL32_BASE */

	void bl2_plat_set_bl33_ep_info(image_info_t *image,
	entry_point_info_t *bl33_ep_info)
	{
	unsigned long el_status;
	unsigned int mode;

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

	if (el_status)
	mode = MODE_EL2;
	else
	mode = MODE_EL1;

	/*
	* TODO: Consider the possibility of specifying the SPSR in
	* the FIP ToC and allowing the platform to have a say as
	* well.
	*/
	bl33_ep_info->spsr = SPSR_64(mode, MODE_SP_ELX,
	DISABLE_ALL_EXCEPTIONS);
	SET_SECURITY_STATE(bl33_ep_info->h.attr, NON_SECURE);
	}

	void bl2_plat_flush_bl31_params(void)
	{
	flush_dcache_range((unsigned long)&bl31_params_mem,
	sizeof(bl2_to_bl31_params_mem_t));
	}

	void bl2_plat_get_bl33_meminfo(meminfo_t *bl33_meminfo)
	{
	bl33_meminfo->total_base = DDR_BASE;
	bl33_meminfo->total_size = DDR_SIZE;
	bl33_meminfo->free_base = DDR_BASE;
	bl33_meminfo->free_size = DDR_SIZE;
	}

	static void reset_dwmmc_clk(void)
	{
	unsigned int data;

	/* disable mmc0 bus clock */
	mmio_write_32(PERI_SC_PERIPH_CLKDIS0, PERI_CLK0_MMC0);
	do {
	data = mmio_read_32(PERI_SC_PERIPH_CLKSTAT0);
	} while (data & PERI_CLK0_MMC0);
	/* enable mmc0 bus clock */
	mmio_write_32(PERI_SC_PERIPH_CLKEN0, PERI_CLK0_MMC0);
	do {
	data = mmio_read_32(PERI_SC_PERIPH_CLKSTAT0);
	} while (!(data & PERI_CLK0_MMC0));
	/* reset mmc0 clock domain */
	mmio_write_32(PERI_SC_PERIPH_RSTEN0, PERI_RST0_MMC0);

	/* bypass mmc0 clock phase */
	data = mmio_read_32(PERI_SC_PERIPH_CTRL2);
	data \|= 3;
	mmio_write_32(PERI_SC_PERIPH_CTRL2, data);

	/* disable low power */
	data = mmio_read_32(PERI_SC_PERIPH_CTRL13);
	data \|= 1 << 3;
	mmio_write_32(PERI_SC_PERIPH_CTRL13, data);
	do {
	data = mmio_read_32(PERI_SC_PERIPH_RSTSTAT0);
	} while (!(data & PERI_RST0_MMC0));

	/* unreset mmc0 clock domain */
	mmio_write_32(PERI_SC_PERIPH_RSTDIS0, PERI_RST0_MMC0);
	do {
	data = mmio_read_32(PERI_SC_PERIPH_RSTSTAT0);
	} while (data & PERI_RST0_MMC0);
	}

	static void hikey_boardid_init(void)
	{
	u_register_t midr;

	midr = read_midr();
	mmio_write_32(MEMORY_AXI_CHIP_ADDR, midr);
	INFO("[BDID] [%x] midr: 0x%x\n", MEMORY_AXI_CHIP_ADDR,
	(unsigned int)midr);

	mmio_write_32(MEMORY_AXI_BOARD_TYPE_ADDR, 0);
	mmio_write_32(MEMORY_AXI_BOARD_ID_ADDR, 0x2b);

	mmio_write_32(ACPU_ARM64_FLAGA, 0x1234);
	mmio_write_32(ACPU_ARM64_FLAGB, 0x5678);
	}

	static void hikey_sd_init(void)
	{
	/* switch pinmux to SD */
	mmio_write_32(IOMG_SD_CLK, IOMG_MUX_FUNC0);
	mmio_write_32(IOMG_SD_CMD, IOMG_MUX_FUNC0);
	mmio_write_32(IOMG_SD_DATA0, IOMG_MUX_FUNC0);
	mmio_write_32(IOMG_SD_DATA1, IOMG_MUX_FUNC0);
	mmio_write_32(IOMG_SD_DATA2, IOMG_MUX_FUNC0);
	mmio_write_32(IOMG_SD_DATA3, IOMG_MUX_FUNC0);

	mmio_write_32(IOCG_SD_CLK, IOCG_INPUT_16MA);
	mmio_write_32(IOCG_SD_CMD, IOCG_INPUT_12MA);
	mmio_write_32(IOCG_SD_DATA0, IOCG_INPUT_12MA);
	mmio_write_32(IOCG_SD_DATA1, IOCG_INPUT_12MA);
	mmio_write_32(IOCG_SD_DATA2, IOCG_INPUT_12MA);
	mmio_write_32(IOCG_SD_DATA3, IOCG_INPUT_12MA);

	/* set SD Card detect as nopull */
	mmio_write_32(IOCG_GPIO8, 0);
	}

	static void hikey_jumper_init(void)
	{
	/* set jumper detect as nopull */
	mmio_write_32(IOCG_GPIO24, 0);
	/* set jumper detect as GPIO */
	mmio_write_32(IOMG_GPIO24, IOMG_MUX_FUNC0);
	}

	void bl2_early_platform_setup(meminfo_t *mem_layout)
	{
	dw_mmc_params_t params;

	/* Initialize the console to provide early debug support */
	console_init(CONSOLE_BASE, PL011_UART_CLK_IN_HZ, PL011_BAUDRATE);

	/* Setup the BL2 memory layout */
	bl2_tzram_layout = *mem_layout;

	/* Clear SRAM since it'll be used by MCU right now. */
	memset((void *)SRAM_BASE, 0, SRAM_SIZE);

	sp804_timer_init(SP804_TIMER0_BASE, 10, 192);
	dsb();
	hikey_ddr_init();

	hikey_boardid_init();
	init_acpu_dvfs();
	hikey_sd_init();
	hikey_jumper_init();

	reset_dwmmc_clk();
	memset(&params, 0, sizeof(dw_mmc_params_t));
	params.reg_base = DWMMC0_BASE;
	params.desc_base = HIKEY_MMC_DESC_BASE;
	params.desc_size = 1 << 20;
	params.clk_rate = 24 * 1000 * 1000;
	params.bus_width = EMMC_BUS_WIDTH_8;
	params.flags = EMMC_FLAG_CMD23;
	dw_mmc_init(&params);

	hikey_io_setup();
	}

	void bl2_plat_arch_setup(void)
	{
	hikey_init_mmu_el1(bl2_tzram_layout.total_base,
	bl2_tzram_layout.total_size,
	BL2_RO_BASE,
	BL2_RO_LIMIT,
	BL2_COHERENT_RAM_BASE,
	BL2_COHERENT_RAM_LIMIT);
	}

	void bl2_platform_setup(void)
	{
	}