1 /* 2 * Copyright (c) 2020-2025, Arm Limited and Contributors. All rights reserved. 3 * 4 * SPDX-License-Identifier: BSD-3-Clause 5 */ 6 7 #include <assert.h> 8 9 #include <libfdt.h> 10 #include <tc_plat.h> 11 12 #include <arch_helpers.h> 13 #include <common/bl_common.h> 14 #include <common/debug.h> 15 #include <drivers/arm/css/css_mhu_doorbell.h> 16 #include <drivers/arm/css/scmi.h> 17 #include <drivers/arm/dsu.h> 18 #include <drivers/arm/sbsa.h> 19 #include <lib/fconf/fconf.h> 20 #include <lib/fconf/fconf_dyn_cfg_getter.h> 21 #include <plat/arm/common/plat_arm.h> 22 #include <plat/common/platform.h> 23 24 #ifdef PLATFORM_TEST_TFM_TESTSUITE 25 #include <psa/crypto_platform.h> 26 #include <psa/crypto_types.h> 27 #include <psa/crypto_values.h> 28 #endif /* PLATFORM_TEST_TFM_TESTSUITE */ 29 #include <psa/error.h> 30 31 #include <plat/common/platform.h> 32 #include <tc_rse_comms.h> 33 34 #ifdef PLATFORM_TEST_TFM_TESTSUITE 35 /* 36 * We pretend using an external RNG (through MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG 37 * mbedTLS config option) so we need to provide an implementation of 38 * mbedtls_psa_external_get_random(). Provide a fake one, since we do not 39 * actually use any of external RNG and this function is only needed during 40 * the execution of TF-M testsuite during exporting the public part of the 41 * delegated attestation key. 42 */ 43 psa_status_t mbedtls_psa_external_get_random( 44 mbedtls_psa_external_random_context_t *context, 45 uint8_t *output, size_t output_size, 46 size_t *output_length) 47 { 48 for (size_t i = 0U; i < output_size; i++) { 49 output[i] = (uint8_t)(read_cntpct_el0() & 0xFFU); 50 } 51 52 *output_length = output_size; 53 54 return PSA_SUCCESS; 55 } 56 #endif /* PLATFORM_TEST_TFM_TESTSUITE */ 57 58 static scmi_channel_plat_info_t tc_scmi_plat_info = { 59 .scmi_mbx_mem = CSS_SCMI_PAYLOAD_BASE, 60 .db_reg_addr = PLAT_CSS_MHU_BASE + MHU_V3_SENDER_REG_SET(0), 61 .db_preserve_mask = 0xfffffffe, 62 .db_modify_mask = 0x1, 63 .ring_doorbell = &mhu_ring_doorbell, 64 }; 65 66 /* the bottom 3 AMU group 1 counters */ 67 #define MPMM_GEARS ((1 << 0) | (1 << 1) | (1 << 2)) 68 69 uint16_t plat_amu_aux_enables[PLATFORM_CORE_COUNT] = { 70 MPMM_GEARS, MPMM_GEARS, MPMM_GEARS, MPMM_GEARS, 71 MPMM_GEARS, MPMM_GEARS, MPMM_GEARS, MPMM_GEARS, 72 #if PLATFORM_CORE_COUNT == 14 73 MPMM_GEARS, MPMM_GEARS, MPMM_GEARS, MPMM_GEARS, 74 MPMM_GEARS, MPMM_GEARS 75 #endif 76 }; 77 78 const dsu_driver_data_t plat_dsu_data = { 79 .clusterpwrdwn_pwrdn = false, 80 .clusterpwrdwn_memret = false, 81 .clusterpwrctlr_cachepwr = CLUSTERPWRCTLR_CACHEPWR_RESET, 82 .clusterpwrctlr_funcret = CLUSTERPWRCTLR_FUNCRET_RESET 83 }; 84 85 static void enable_ns_mcn_pmu(void) 86 { 87 /* 88 * Enable non-secure access to MCN PMU registers 89 */ 90 for (int i = 0; i < MCN_INSTANCES; i++) { 91 uintptr_t mcn_scr = MCN_MICROARCH_BASE_ADDR(i) + 92 MCN_SCR_OFFSET; 93 mmio_setbits_32(mcn_scr, 1 << MCN_SCR_PMU_BIT); 94 } 95 } 96 97 #if TARGET_PLATFORM == 3 98 static void set_mcn_slc_alloc_mode(void) 99 { 100 /* 101 * SLC WRALLOCMODE and RDALLOCMODE are configured by default to 102 * 0b01 (always alloc), configure both to 0b10 (use bus signal 103 * attribute from interface). 104 */ 105 for (int i = 0; i < MCN_INSTANCES; i++) { 106 uintptr_t slccfg_ctl_ns = MCN_MPAM_NS_BASE_ADDR(i) + 107 MPAM_SLCCFG_CTL_OFFSET; 108 uintptr_t slccfg_ctl_s = MCN_MPAM_S_BASE_ADDR(i) + 109 MPAM_SLCCFG_CTL_OFFSET; 110 111 mmio_clrsetbits_32(slccfg_ctl_ns, 112 (SLC_RDALLOCMODE_MASK | SLC_WRALLOCMODE_MASK), 113 (SLC_ALLOC_BUS_SIGNAL_ATTR << SLC_RDALLOCMODE_SHIFT) | 114 (SLC_ALLOC_BUS_SIGNAL_ATTR << SLC_WRALLOCMODE_SHIFT)); 115 mmio_clrsetbits_32(slccfg_ctl_s, 116 (SLC_RDALLOCMODE_MASK | SLC_WRALLOCMODE_MASK), 117 (SLC_ALLOC_BUS_SIGNAL_ATTR << SLC_RDALLOCMODE_SHIFT) | 118 (SLC_ALLOC_BUS_SIGNAL_ATTR << SLC_WRALLOCMODE_SHIFT)); 119 } 120 } 121 #endif 122 123 void bl31_platform_setup(void) 124 { 125 psa_status_t status; 126 127 tc_bl31_common_platform_setup(); 128 enable_ns_mcn_pmu(); 129 #if TARGET_PLATFORM == 3 130 set_mcn_slc_alloc_mode(); 131 plat_arm_ni_setup(NCI_BASE_ADDR); 132 #endif 133 134 /* Initialise RSE communication channel */ 135 status = plat_rse_comms_init(); 136 if (status != PSA_SUCCESS) { 137 ERROR("Failed to initialize RSE communication channel - psa_status = %d\n", status); 138 } 139 } 140 141 scmi_channel_plat_info_t *plat_css_get_scmi_info(unsigned int channel_id __unused) 142 { 143 144 return &tc_scmi_plat_info; 145 146 } 147 148 void bl31_early_platform_setup2(u_register_t arg0, u_register_t arg1, 149 u_register_t arg2, u_register_t arg3) 150 { 151 /* Initialize the console to provide early debug support */ 152 arm_console_boot_init(); 153 154 arm_bl31_early_platform_setup(arg0, arg1, arg2, arg3); 155 156 #if !TRANSFER_LIST 157 /* Fill the properties struct with the info from the config dtb */ 158 fconf_populate("FW_CONFIG", arg1); 159 #endif 160 } 161 162 #ifdef PLATFORM_TESTS 163 static __dead2 void tc_run_platform_tests(void) 164 { 165 int tests_failed; 166 167 printf("\nStarting platform tests...\n"); 168 169 #ifdef PLATFORM_TEST_NV_COUNTERS 170 tests_failed = nv_counter_test(); 171 #elif PLATFORM_TEST_ROTPK 172 tests_failed = rotpk_test(); 173 #elif PLATFORM_TEST_TFM_TESTSUITE 174 tests_failed = run_platform_tests(); 175 #endif 176 177 printf("Platform tests %s.\n", 178 (tests_failed != 0) ? "failed" : "succeeded"); 179 180 /* Suspend booting, no matter the tests outcome. */ 181 printf("Suspend booting...\n"); 182 plat_error_handler(-1); 183 } 184 #endif 185 186 void tc_bl31_common_platform_setup(void) 187 { 188 arm_bl31_platform_setup(); 189 190 gic_set_gicr_frames(arm_gicr_base_addrs); 191 192 #ifdef PLATFORM_TESTS 193 tc_run_platform_tests(); 194 #endif 195 } 196 197 const plat_psci_ops_t *plat_arm_psci_override_pm_ops(plat_psci_ops_t *ops) 198 { 199 return css_scmi_override_pm_ops(ops); 200 } 201 202 void __init bl31_plat_arch_setup(void) 203 { 204 arm_bl31_plat_arch_setup(); 205 206 /* 207 * When TRANSFER_LIST is enabled, HW_CONFIG is included in Transfer List 208 * as an entry with the tag TL_TAG_FDT. In this case, the configuration 209 * is already available, so the fconf_populate mechanism is not needed. 210 * The code block below is only required when TRANSFER_LIST is not used. 211 */ 212 #if !TRANSFER_LIST 213 /* HW_CONFIG was also loaded by BL2 */ 214 const struct dyn_cfg_dtb_info_t *hw_config_info; 215 216 hw_config_info = FCONF_GET_PROPERTY(dyn_cfg, dtb, HW_CONFIG_ID); 217 assert(hw_config_info != NULL); 218 219 fconf_populate("HW_CONFIG", hw_config_info->config_addr); 220 #endif 221 } 222 223 #if defined(SPD_spmd) && (SPMC_AT_EL3 == 0) 224 void tc_bl31_plat_runtime_setup(void) 225 { 226 /* Start secure watchdog timer. */ 227 plat_arm_secure_wdt_start(); 228 229 arm_bl31_plat_runtime_setup(); 230 } 231 232 void bl31_plat_runtime_setup(void) 233 { 234 tc_bl31_plat_runtime_setup(); 235 } 236 237 /* 238 * Platform handler for Group0 secure interrupt. 239 */ 240 int plat_spmd_handle_group0_interrupt(uint32_t intid) 241 { 242 /* Trusted Watchdog timer is the only source of Group0 interrupt now. */ 243 if (intid == SBSA_SECURE_WDOG_INTID) { 244 /* Refresh the timer. */ 245 plat_arm_secure_wdt_refresh(); 246 247 return 0; 248 } 249 250 return -1; 251 } 252 #endif /*defined(SPD_spmd) && (SPMC_AT_EL3 == 0)*/ 253