1 /*
2 * Copyright 2019-2022 NXP
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8 #include <stdbool.h>
9
10 #include <arch_helpers.h>
11 #include <common/bl_common.h>
12 #include <common/debug.h>
13 #include <context.h>
14 #include <drivers/arm/tzc380.h>
15 #include <drivers/console.h>
16 #include <drivers/generic_delay_timer.h>
17 #include <lib/el3_runtime/context_mgmt.h>
18 #include <lib/mmio.h>
19 #include <lib/xlat_tables/xlat_tables_v2.h>
20 #include <plat/common/platform.h>
21
22 #include <dram.h>
23 #include <gpc.h>
24 #include <imx_aipstz.h>
25 #include <imx_uart.h>
26 #include <imx_rdc.h>
27 #include <imx8m_caam.h>
28 #include <imx8m_ccm.h>
29 #include <imx8m_csu.h>
30 #include <imx8m_snvs.h>
31 #include <platform_def.h>
32 #include <plat_common.h>
33 #include <plat_imx8.h>
34
35 #define TRUSTY_PARAMS_LEN_BYTES (4096*2)
36
37 static const mmap_region_t imx_mmap[] = {
38 GIC_MAP, AIPS_MAP, OCRAM_S_MAP, DDRC_MAP,
39 CAAM_RAM_MAP, NS_OCRAM_MAP, ROM_MAP, DRAM_MAP,
40 {0},
41 };
42
43 static const struct aipstz_cfg aipstz[] = {
44 {IMX_AIPSTZ1, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
45 {IMX_AIPSTZ2, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
46 {IMX_AIPSTZ3, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
47 {IMX_AIPSTZ4, 0x77777777, 0x77777777, .opacr = {0x0, 0x0, 0x0, 0x0, 0x0}, },
48 {0},
49 };
50
51 static struct imx_rdc_cfg rdc[] = {
52 /* Master domain assignment */
53 RDC_MDAn(RDC_MDA_M7, DID1),
54
55 /* peripherals domain permission */
56 RDC_PDAPn(RDC_PDAP_UART1, D0R | D0W | D1R | D1W | D2R | D2W | D3R | D3W),
57 RDC_PDAPn(RDC_PDAP_UART2, D0R | D0W),
58 RDC_PDAPn(RDC_PDAP_UART3, D0R | D0W | D1R | D1W | D2R | D2W | D3R | D3W),
59 RDC_PDAPn(RDC_PDAP_UART4, D1R | D1W),
60
61 /* memory region */
62 RDC_MEM_REGIONn(16, 0x0, 0x0, 0xff),
63 RDC_MEM_REGIONn(17, 0x0, 0x0, 0xff),
64 RDC_MEM_REGIONn(18, 0x0, 0x0, 0xff),
65
66 /* Sentinel */
67 {0},
68 };
69
70 static const struct imx_csu_cfg csu_cfg[] = {
71 /* peripherals csl setting */
72 CSU_CSLx(CSU_CSL_OCRAM, CSU_SEC_LEVEL_2, UNLOCKED),
73 CSU_CSLx(CSU_CSL_OCRAM_S, CSU_SEC_LEVEL_2, UNLOCKED),
74
75 /* master HP0~1 */
76
77 /* SA setting */
78
79 /* HP control setting */
80
81 /* Sentinel */
82 {0}
83 };
84
85
86 static entry_point_info_t bl32_image_ep_info;
87 static entry_point_info_t bl33_image_ep_info;
88
89 /* get SPSR for BL33 entry */
get_spsr_for_bl33_entry(void)90 static uint32_t get_spsr_for_bl33_entry(void)
91 {
92 unsigned long el_status;
93 unsigned long mode;
94 uint32_t spsr;
95
96 /* figure out what mode we enter the non-secure world */
97 el_status = read_id_aa64pfr0_el1() >> ID_AA64PFR0_EL2_SHIFT;
98 el_status &= ID_AA64PFR0_ELX_MASK;
99
100 mode = (el_status) ? MODE_EL2 : MODE_EL1;
101
102 spsr = SPSR_64(mode, MODE_SP_ELX, DISABLE_ALL_EXCEPTIONS);
103 return spsr;
104 }
105
bl31_early_platform_setup2(u_register_t arg0,u_register_t arg1,u_register_t arg2,u_register_t arg3)106 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1,
107 u_register_t arg2, u_register_t arg3)
108 {
109 unsigned int console_base = IMX_BOOT_UART_BASE;
110 static console_t console;
111 unsigned int val;
112 int i, ret;
113
114 /* Enable CSU NS access permission */
115 for (i = 0; i < 64; i++) {
116 mmio_write_32(IMX_CSU_BASE + i * 4, 0x00ff00ff);
117 }
118
119 imx_aipstz_init(aipstz);
120
121 if (console_base == 0U) {
122 console_base = imx8m_uart_get_base();
123 }
124
125 imx_rdc_init(rdc, console_base);
126
127 imx_csu_init(csu_cfg);
128
129 /*
130 * Configure the force_incr programmable bit in GPV_5 of PL301_display, which fixes
131 * partial write issue. The AXI2AHB bridge is used for masters that access the TCM
132 * through system bus. Please refer to errata ERR050362 for more information.
133 */
134 mmio_setbits_32((GPV5_BASE_ADDR + FORCE_INCR_OFFSET), FORCE_INCR_BIT_MASK);
135
136 /* config the ocram memory range for secure access */
137 mmio_write_32(IMX_IOMUX_GPR_BASE + 0x2c, 0x4c1);
138 val = mmio_read_32(IMX_IOMUX_GPR_BASE + 0x2c);
139 mmio_write_32(IMX_IOMUX_GPR_BASE + 0x2c, val | 0x3DFF0000);
140
141 console_imx_uart_register(console_base, IMX_BOOT_UART_CLK_IN_HZ,
142 IMX_CONSOLE_BAUDRATE, &console);
143 #if DEBUG
144 console_set_scope(&console, CONSOLE_FLAG_BOOT | CONSOLE_FLAG_RUNTIME);
145 #else
146 /* This console is only used for boot stage */
147 console_set_scope(&console, CONSOLE_FLAG_BOOT);
148 #endif
149
150 imx8m_caam_init();
151
152 /*
153 * tell BL3-1 where the non-secure software image is located
154 * and the entry state information.
155 */
156 bl33_image_ep_info.pc = PLAT_NS_IMAGE_OFFSET;
157 bl33_image_ep_info.spsr = get_spsr_for_bl33_entry();
158 SET_SECURITY_STATE(bl33_image_ep_info.h.attr, NON_SECURE);
159
160 #if defined(SPD_opteed) || defined(SPD_trusty)
161 /* Populate entry point information for BL32 */
162 SET_PARAM_HEAD(&bl32_image_ep_info, PARAM_EP, VERSION_1, 0);
163 SET_SECURITY_STATE(bl32_image_ep_info.h.attr, SECURE);
164 bl32_image_ep_info.pc = BL32_BASE;
165 bl32_image_ep_info.spsr = 0;
166
167 /* Pass TEE base and size to bl33 */
168 bl33_image_ep_info.args.arg1 = BL32_BASE;
169 bl33_image_ep_info.args.arg2 = BL32_SIZE;
170
171 #ifdef SPD_trusty
172 bl32_image_ep_info.args.arg0 = BL32_SIZE;
173 bl32_image_ep_info.args.arg1 = BL32_BASE;
174 #else
175 /* Make sure memory is clean */
176 mmio_write_32(BL32_FDT_OVERLAY_ADDR, 0);
177 bl33_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR;
178 bl32_image_ep_info.args.arg3 = BL32_FDT_OVERLAY_ADDR;
179 #endif
180 #endif
181
182 ret = imx_bl31_params_parse(arg0, IMX_NS_OCRAM_SIZE, IMX_NS_OCRAM_BASE,
183 &bl32_image_ep_info, &bl33_image_ep_info);
184 if (ret != 0) {
185 imx_bl31_params_parse(arg0, IMX_TCM_BASE, IMX_TCM_SIZE,
186 &bl32_image_ep_info, &bl33_image_ep_info);
187 }
188
189 #if !defined(SPD_opteed) && !defined(SPD_trusty)
190 enable_snvs_privileged_access();
191 #endif
192 }
193
194 #define MAP_BL31_TOTAL \
195 MAP_REGION_FLAT(BL31_START, BL31_SIZE, MT_MEMORY | MT_RW | MT_SECURE)
196 #define MAP_BL31_RO \
197 MAP_REGION_FLAT(BL_CODE_BASE, BL_CODE_END - BL_CODE_BASE, MT_MEMORY | MT_RO | MT_SECURE)
198 #define MAP_COHERENT_MEM \
199 MAP_REGION_FLAT(BL_COHERENT_RAM_BASE, BL_COHERENT_RAM_END - BL_COHERENT_RAM_BASE, \
200 MT_DEVICE | MT_RW | MT_SECURE)
201 #define MAP_BL32_TOTAL \
202 MAP_REGION_FLAT(BL32_BASE, BL32_SIZE, MT_MEMORY | MT_RW)
203
bl31_plat_arch_setup(void)204 void bl31_plat_arch_setup(void)
205 {
206 const mmap_region_t bl_regions[] = {
207 MAP_BL31_TOTAL,
208 MAP_BL31_RO,
209 #if USE_COHERENT_MEM
210 MAP_COHERENT_MEM,
211 #endif
212 #if defined(SPD_opteed) || defined(SPD_trusty)
213 /* Map TEE memory */
214 MAP_BL32_TOTAL,
215 #endif
216 {0}
217 };
218
219 setup_page_tables(bl_regions, imx_mmap);
220 enable_mmu_el3(0);
221 }
222
bl31_platform_setup(void)223 void bl31_platform_setup(void)
224 {
225 generic_delay_timer_init();
226
227 /* select the CKIL source to 32K OSC */
228 mmio_write_32(IMX_ANAMIX_BASE + ANAMIX_MISC_CTL, 0x1);
229
230 /* Init the dram info */
231 dram_info_init(SAVED_DRAM_TIMING_BASE);
232
233 plat_gic_driver_init();
234 plat_gic_init();
235
236 imx_gpc_init();
237 }
238
bl31_plat_get_next_image_ep_info(unsigned int type)239 entry_point_info_t *bl31_plat_get_next_image_ep_info(unsigned int type)
240 {
241 if (type == NON_SECURE)
242 return &bl33_image_ep_info;
243 if (type == SECURE)
244 return &bl32_image_ep_info;
245
246 return NULL;
247 }
248
plat_get_syscnt_freq2(void)249 unsigned int plat_get_syscnt_freq2(void)
250 {
251 return COUNTER_FREQUENCY;
252 }
253
254 #ifdef SPD_trusty
plat_trusty_set_boot_args(aapcs64_params_t * args)255 void plat_trusty_set_boot_args(aapcs64_params_t *args)
256 {
257 args->arg0 = BL32_SIZE;
258 args->arg1 = BL32_BASE;
259 args->arg2 = TRUSTY_PARAMS_LEN_BYTES;
260 }
261 #endif
262