1/*
2 * Copyright (c) 2013-2016, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6#include <assert.h>
7#include <bl_common.h>
8#include <common_def.h>
9#include <console.h>
10#include <debug.h>
11#include <generic_delay_timer.h>
12#include <mcucfg.h>
13#include <mmio.h>
14#include <mtcmos.h>
15#include <plat_arm.h>
16#include <plat_private.h>
17#include <platform.h>
18#include <spm.h>
19
20/*******************************************************************************
21 * Declarations of linker defined symbols which will help us find the layout
22 * of trusted SRAM
23 ******************************************************************************/
24unsigned long __RO_START__;
25unsigned long __RO_END__;
26
27/*
28 * The next 3 constants identify the extents of the code, RO data region and the
29 * limit of the BL31 image.  These addresses are used by the MMU setup code and
30 * therefore they must be page-aligned.  It is the responsibility of the linker
31 * script to ensure that __RO_START__, __RO_END__ & __BL31_END__ linker symbols
32 * refer to page-aligned addresses.
33 */
34#define BL31_RO_BASE (unsigned long)(&__RO_START__)
35#define BL31_RO_LIMIT (unsigned long)(&__RO_END__)
36#define BL31_END (unsigned long)(&__BL31_END__)
37
38static entry_point_info_t bl32_ep_info;
39static entry_point_info_t bl33_ep_info;
40
41static void platform_setup_cpu(void)
42{
43	/* turn off all the little core's power except cpu 0 */
44	mtcmos_little_cpu_off();
45
46	/* setup big cores */
47	mmio_write_32((uintptr_t)&mt8173_mcucfg->mp1_config_res,
48		MP1_DIS_RGU0_WAIT_PD_CPUS_L1_ACK |
49		MP1_DIS_RGU1_WAIT_PD_CPUS_L1_ACK |
50		MP1_DIS_RGU2_WAIT_PD_CPUS_L1_ACK |
51		MP1_DIS_RGU3_WAIT_PD_CPUS_L1_ACK |
52		MP1_DIS_RGU_NOCPU_WAIT_PD_CPUS_L1_ACK);
53	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_miscdbg, MP1_AINACTS);
54	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_clkenm_div,
55		MP1_SW_CG_GEN);
56	mmio_clrbits_32((uintptr_t)&mt8173_mcucfg->mp1_rst_ctl,
57		MP1_L2RSTDISABLE);
58
59	/* set big cores arm64 boot mode */
60	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp1_cpucfg,
61		MP1_CPUCFG_64BIT);
62
63	/* set LITTLE cores arm64 boot mode */
64	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->mp0_rv_addr[0].rv_addr_hw,
65		MP0_CPUCFG_64BIT);
66
67	/* enable dcm control */
68	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->bus_fabric_dcm_ctrl,
69		ADB400_GRP_DCM_EN | CCI400_GRP_DCM_EN | ADBCLK_GRP_DCM_EN |
70		EMICLK_GRP_DCM_EN | ACLK_GRP_DCM_EN | L2C_IDLE_DCM_EN |
71		INFRACLK_PSYS_DYNAMIC_CG_EN);
72	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->l2c_sram_ctrl,
73		L2C_SRAM_DCM_EN);
74	mmio_setbits_32((uintptr_t)&mt8173_mcucfg->cci_clk_ctrl,
75		MCU_BUS_DCM_EN);
76}
77
78static void platform_setup_sram(void)
79{
80	/* protect BL31 memory from non-secure read/write access */
81	mmio_write_32(SRAMROM_SEC_ADDR, (uint32_t)(BL31_END + 0x3ff) & 0x3fc00);
82	mmio_write_32(SRAMROM_SEC_CTRL, 0x10000ff9);
83}
84
85/*******************************************************************************
86 * Return a pointer to the 'entry_point_info' structure of the next image for
87 * the security state specified. BL33 corresponds to the non-secure image type
88 * while BL32 corresponds to the secure image type. A NULL pointer is returned
89 * if the image does not exist.
90 ******************************************************************************/
91entry_point_info_t *bl31_plat_get_next_image_ep_info(uint32_t type)
92{
93	entry_point_info_t *next_image_info;
94
95	next_image_info = (type == NON_SECURE) ? &bl33_ep_info : &bl32_ep_info;
96
97	/* None of the images on this platform can have 0x0 as the entrypoint */
98	if (next_image_info->pc)
99		return next_image_info;
100	else
101		return NULL;
102}
103
104/*******************************************************************************
105 * Perform any BL3-1 early platform setup. Here is an opportunity to copy
106 * parameters passed by the calling EL (S-EL1 in BL2 & S-EL3 in BL1) before they
107 * are lost (potentially). This needs to be done before the MMU is initialized
108 * so that the memory layout can be used while creating page tables.
109 * BL2 has flushed this information to memory, so we are guaranteed to pick up
110 * good data.
111 ******************************************************************************/
112void bl31_early_platform_setup(bl31_params_t *from_bl2,
113			       void *plat_params_from_bl2)
114{
115	console_init(MT8173_UART0_BASE, MT8173_UART_CLOCK, MT8173_BAUDRATE);
116
117	VERBOSE("bl31_setup\n");
118
119	assert(from_bl2 != NULL);
120	assert(from_bl2->h.type == PARAM_BL31);
121	assert(from_bl2->h.version >= VERSION_1);
122
123	bl32_ep_info = *from_bl2->bl32_ep_info;
124	bl33_ep_info = *from_bl2->bl33_ep_info;
125}
126
127/*******************************************************************************
128 * Perform any BL3-1 platform setup code
129 ******************************************************************************/
130void bl31_platform_setup(void)
131{
132	platform_setup_cpu();
133	platform_setup_sram();
134
135	generic_delay_timer_init();
136
137	/* Initialize the gic cpu and distributor interfaces */
138	plat_arm_gic_driver_init();
139	plat_arm_gic_init();
140
141#if ENABLE_PLAT_COMPAT
142	/* Topologies are best known to the platform. */
143	mt_setup_topology();
144#endif
145
146	/* Initialize spm at boot time */
147	spm_boot_init();
148}
149
150/*******************************************************************************
151 * Perform the very early platform specific architectural setup here. At the
152 * moment this is only intializes the mmu in a quick and dirty way.
153 ******************************************************************************/
154void bl31_plat_arch_setup(void)
155{
156	plat_cci_init();
157	plat_cci_enable();
158
159	plat_configure_mmu_el3(BL31_RO_BASE,
160			       BL_COHERENT_RAM_END - BL31_RO_BASE,
161			       BL31_RO_BASE,
162			       BL31_RO_LIMIT,
163			       BL_COHERENT_RAM_BASE,
164			       BL_COHERENT_RAM_END);
165}
166
167