1 /*
2  * Copyright (c) 2016-2021, ARM Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 
7 #include <arch_helpers.h>
8 #include <common/bl_common.h>
9 #include <common/debug.h>
10 #include <drivers/arm/cci.h>
11 #include <drivers/console.h>
12 #include <lib/mmio.h>
13 #include <lib/smccc.h>
14 #include <lib/xlat_tables/xlat_tables.h>
15 #include <plat/common/platform.h>
16 #include <services/arm_arch_svc.h>
17 
18 #include <mtk_plat_common.h>
19 #include <mtk_sip_svc.h>
20 #include <plat_private.h>
21 
22 struct atf_arg_t gteearg;
23 
clean_top_32b_of_param(uint32_t smc_fid,u_register_t * px1,u_register_t * px2,u_register_t * px3,u_register_t * px4)24 void clean_top_32b_of_param(uint32_t smc_fid,
25 				u_register_t *px1,
26 				u_register_t *px2,
27 				u_register_t *px3,
28 				u_register_t *px4)
29 {
30 	/* if parameters from SMC32. Clean top 32 bits */
31 	if (0 == (smc_fid & SMC_AARCH64_BIT)) {
32 		*px1 = *px1 & SMC32_PARAM_MASK;
33 		*px2 = *px2 & SMC32_PARAM_MASK;
34 		*px3 = *px3 & SMC32_PARAM_MASK;
35 		*px4 = *px4 & SMC32_PARAM_MASK;
36 	}
37 }
38 
39 #if MTK_SIP_KERNEL_BOOT_ENABLE
40 static struct kernel_info k_info;
41 
save_kernel_info(uint64_t pc,uint64_t r0,uint64_t r1,uint64_t k32_64)42 static void save_kernel_info(uint64_t pc,
43 			uint64_t r0,
44 			uint64_t r1,
45 			uint64_t k32_64)
46 {
47 	k_info.k32_64 = k32_64;
48 	k_info.pc = pc;
49 
50 	if (LINUX_KERNEL_32 ==  k32_64) {
51 		/* for 32 bits kernel */
52 		k_info.r0 = 0;
53 		/* machtype */
54 		k_info.r1 = r0;
55 		/* tags */
56 		k_info.r2 = r1;
57 	} else {
58 		/* for 64 bits kernel */
59 		k_info.r0 = r0;
60 		k_info.r1 = r1;
61 	}
62 }
63 
get_kernel_info_pc(void)64 uint64_t get_kernel_info_pc(void)
65 {
66 	return k_info.pc;
67 }
68 
get_kernel_info_r0(void)69 uint64_t get_kernel_info_r0(void)
70 {
71 	return k_info.r0;
72 }
73 
get_kernel_info_r1(void)74 uint64_t get_kernel_info_r1(void)
75 {
76 	return k_info.r1;
77 }
78 
get_kernel_info_r2(void)79 uint64_t get_kernel_info_r2(void)
80 {
81 	return k_info.r2;
82 }
83 
boot_to_kernel(uint64_t x1,uint64_t x2,uint64_t x3,uint64_t x4)84 void boot_to_kernel(uint64_t x1, uint64_t x2, uint64_t x3, uint64_t x4)
85 {
86 	static uint8_t kernel_boot_once_flag;
87 	/* only support in booting flow */
88 	if (0 == kernel_boot_once_flag) {
89 		kernel_boot_once_flag = 1;
90 
91 		console_init(gteearg.atf_log_port,
92 			UART_CLOCK, UART_BAUDRATE);
93 		INFO("save kernel info\n");
94 		save_kernel_info(x1, x2, x3, x4);
95 		bl31_prepare_kernel_entry(x4);
96 		INFO("el3_exit\n");
97 		console_uninit();
98 	}
99 }
100 #endif
101 
plat_get_spsr_for_bl33_entry(void)102 uint32_t plat_get_spsr_for_bl33_entry(void)
103 {
104 	unsigned int mode;
105 	uint32_t spsr;
106 	unsigned int ee;
107 	unsigned long daif;
108 
109 	INFO("Secondary bootloader is AArch32\n");
110 	mode = MODE32_svc;
111 	ee = 0;
112 	/*
113 	 * TODO: Choose async. exception bits if HYP mode is not
114 	 * implemented according to the values of SCR.{AW, FW} bits
115 	 */
116 	daif = DAIF_ABT_BIT | DAIF_IRQ_BIT | DAIF_FIQ_BIT;
117 
118 	spsr = SPSR_MODE32(mode, 0, ee, daif);
119 	return spsr;
120 }
121 
122 /*****************************************************************************
123  * plat_is_smccc_feature_available() - This function checks whether SMCCC
124  *                                     feature is availabile for platform.
125  * @fid: SMCCC function id
126  *
127  * Return SMC_OK if SMCCC feature is available and SMC_ARCH_CALL_NOT_SUPPORTED
128  * otherwise.
129  *****************************************************************************/
plat_is_smccc_feature_available(u_register_t fid)130 int32_t plat_is_smccc_feature_available(u_register_t fid)
131 {
132 	switch (fid) {
133 	case SMCCC_ARCH_SOC_ID:
134 		return SMC_ARCH_CALL_SUCCESS;
135 	default:
136 		return SMC_ARCH_CALL_NOT_SUPPORTED;
137 	}
138 }
139 
plat_get_soc_version(void)140 int32_t plat_get_soc_version(void)
141 {
142 	uint32_t manfid = SOC_ID_SET_JEP_106(JEDEC_MTK_BKID, JEDEC_MTK_MFID);
143 
144 	return (int32_t)(manfid | (SOC_CHIP_ID & SOC_ID_IMPL_DEF_MASK));
145 }
146 
plat_get_soc_revision(void)147 int32_t plat_get_soc_revision(void)
148 {
149 	return 0;
150 }
151