bl31_plat_setup.c

/*
 * Copyright (c) 2019, ARM Limited and Contributors. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */

#include <assert.h>
#include <arch_helpers.h>
#include <common/bl_common.h>
#include <plat/common/common_def.h>
#include <drivers/console.h>
#include <common/debug.h>
#include <drivers/generic_delay_timer.h>
#include <mcucfg.h>
#include <mt_gic_v3.h>
#include <lib/mmio.h>
#include <mtk_plat_common.h>
#include <plat_debug.h>
#include <plat_private.h>
#include <platform_def.h>
#include <scu.h>
#include <drivers/ti/uart/uart_16550.h>

static entry_point_info_t bl32_ep_info;
static entry_point_info_t bl33_ep_info;

static void platform_setup_cpu(void)
{
	mmio_write_32((uintptr_t)&mt8183_mcucfg->mp0_rw_rsvd0, 0x00000001);

	VERBOSE("addr of cci_adb400_dcm_config: 0x%x\n",
		mmio_read_32((uintptr_t)&mt8183_mcucfg->cci_adb400_dcm_config));
	VERBOSE("addr of sync_dcm_config: 0x%x\n",
		mmio_read_32((uintptr_t)&mt8183_mcucfg->sync_dcm_config));

	VERBOSE("mp0_spmc: 0x%x\n",
		mmio_read_32((uintptr_t)&mt8183_mcucfg->mp0_cputop_spmc_ctl));
	VERBOSE("mp1_spmc: 0x%x\n",
		mmio_read_32((uintptr_t)&mt8183_mcucfg->mp1_cputop_spmc_ctl));
}

/*******************************************************************************
 * Return a pointer to the 'entry_point_info' structure of the next image for
 * the security state specified. BL33 corresponds to the non-secure image type
 * while BL32 corresponds to the secure image type. A NULL pointer is returned
 * if the image does not exist.
 ******************************************************************************/
entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
{
	entry_point_info_t *next_image_info;

	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;

	/* None of the images on this platform can have 0x0 as the entrypoint */
	if (next_image_info->pc)
		return next_image_info;
	else
		return NULL;
}

/*******************************************************************************
 * Perform any BL31 early platform setup. Here is an opportunity to copy
 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they
 * are lost (potentially). This needs to be done before the MMU is initialized
 * so that the memory layout can be used while creating page tables.
 * BL2 has flushed this information to memory, so we are guaranteed to pick up
 * good data.
 ******************************************************************************/
void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
				u_register_t arg2, u_register_t arg3)
{
	struct mtk_bl31_params *arg_from_bl2 = (struct mtk_bl31_params *)arg0;
	static console_16550_t console;

	console_16550_register(UART0_BASE, UART_CLOCK, UART_BAUDRATE, &console);

	NOTICE("MT8183 bl31_setup\n");

	assert(arg_from_bl2 != NULL);
	assert(arg_from_bl2->h.type == PARAM_BL31);
	assert(arg_from_bl2->h.version >= VERSION_1);

	bl32_ep_info = *arg_from_bl2->bl32_ep_info;
	bl33_ep_info = *arg_from_bl2->bl33_ep_info;
}


/*******************************************************************************
 * Perform any BL31 platform setup code
 ******************************************************************************/
void bl31_platform_setup(void)
{
	platform_setup_cpu();
	generic_delay_timer_init();

	/* Initialize the GIC driver, CPU and distributor interfaces */
	mt_gic_driver_init();
	mt_gic_init();
}

/*******************************************************************************
 * Perform the very early platform specific architectural setup here. At the
 * moment this is only intializes the mmu in a quick and dirty way.
 ******************************************************************************/
void bl31_plat_arch_setup(void)
{
	enable_scu(read_mpidr());

	plat_configure_mmu_el3(BL_CODE_BASE,
			       BL_COHERENT_RAM_END - BL_CODE_BASE,
			       BL_CODE_BASE,
			       BL_CODE_END,
			       BL_COHERENT_RAM_BASE,
			       BL_COHERENT_RAM_END);
}