Angel Pons | a2ee761 | 2020-04-04 18:51:15 +0200 | [diff] [blame] | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 2 | |
| 3 | #include <assert.h> |
Kyösti Mälkki | 13f6650 | 2019-03-03 08:01:05 +0200 | [diff] [blame] | 4 | #include <device/mmio.h> |
Arthur Heymans | 29fc9bb | 2016-09-02 23:14:54 +0200 | [diff] [blame] | 5 | #include <commonlib/helpers.h> |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 6 | #include <console/console.h> |
| 7 | #include <soc/addressmap.h> |
| 8 | #include <soc/id.h> |
| 9 | #include <soc/mc.h> |
| 10 | #include <soc/sdram.h> |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 11 | #include <symbols.h> |
| 12 | #include <soc/nvidia/tegra/types.h> |
Elyes HAOUAS | 3081855 | 2019-06-23 07:03:59 +0200 | [diff] [blame] | 13 | #include <types.h> |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 14 | |
| 15 | static uintptr_t tz_base_mib; |
| 16 | static const size_t tz_size_mib = CONFIG_TRUSTZONE_CARVEOUT_SIZE_MB; |
| 17 | |
| 18 | /* returns total amount of DRAM (in MB) from memory controller registers */ |
| 19 | int sdram_size_mb(void) |
| 20 | { |
| 21 | struct tegra_mc_regs *mc = (struct tegra_mc_regs *)TEGRA_MC_BASE; |
| 22 | static int total_size = 0; |
| 23 | |
| 24 | if (total_size) |
| 25 | return total_size; |
| 26 | |
| 27 | /* |
| 28 | * This obtains memory size from the External Memory Aperture |
| 29 | * Configuration register. Nvidia confirmed that it is safe to assume |
| 30 | * this value represents the total physical DRAM size. |
| 31 | */ |
| 32 | total_size = (read32(&mc->emem_cfg) >> |
| 33 | MC_EMEM_CFG_SIZE_MB_SHIFT) & MC_EMEM_CFG_SIZE_MB_MASK; |
| 34 | |
| 35 | return total_size; |
| 36 | } |
| 37 | |
| 38 | static void carveout_from_regs(uintptr_t *base_mib, size_t *size_mib, |
| 39 | uint32_t bom, uint32_t bom_hi, uint32_t size) |
| 40 | { |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 41 | /* All size regs of carveouts are in MiB. */ |
| 42 | if (size == 0) |
| 43 | return; |
| 44 | |
| 45 | *size_mib = size; |
| 46 | bom >>= 20; |
| 47 | bom |= bom_hi << (32 - 20); |
| 48 | |
| 49 | *base_mib = bom; |
| 50 | } |
| 51 | |
| 52 | void carveout_range(int id, uintptr_t *base_mib, size_t *size_mib) |
| 53 | { |
| 54 | *base_mib = 0; |
| 55 | *size_mib = 0; |
| 56 | struct tegra_mc_regs * const mc = (struct tegra_mc_regs *)TEGRA_MC_BASE; |
| 57 | size_t region_size_mb; |
| 58 | |
| 59 | switch (id) { |
| 60 | case CARVEOUT_TZ: |
| 61 | *base_mib = tz_base_mib; |
| 62 | *size_mib = tz_size_mib; |
| 63 | break; |
| 64 | case CARVEOUT_SEC: |
| 65 | carveout_from_regs(base_mib, size_mib, |
| 66 | read32(&mc->sec_carveout_bom), |
| 67 | read32(&mc->sec_carveout_adr_hi), |
| 68 | read32(&mc->sec_carveout_size_mb)); |
| 69 | break; |
| 70 | case CARVEOUT_MTS: |
| 71 | carveout_from_regs(base_mib, size_mib, |
| 72 | read32(&mc->mts_carveout_bom), |
| 73 | read32(&mc->mts_carveout_adr_hi), |
| 74 | read32(&mc->mts_carveout_size_mb)); |
| 75 | break; |
| 76 | case CARVEOUT_VPR: |
Tom Warren | 5096787 | 2015-08-04 13:08:50 -0700 | [diff] [blame] | 77 | /* |
| 78 | * A 128MB VPR carveout is felt to be sufficient as per syseng. |
| 79 | * Set it up in vpr_region_init, below. |
| 80 | */ |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 81 | carveout_from_regs(base_mib, size_mib, |
| 82 | read32(&mc->video_protect_bom), |
| 83 | read32(&mc->video_protect_bom_adr_hi), |
| 84 | read32(&mc->video_protect_size_mb)); |
| 85 | break; |
| 86 | case CARVEOUT_GPU: |
| 87 | /* These carveout regs use 128KB granularity - convert to MB */ |
| 88 | region_size_mb = DIV_ROUND_UP(read32(&mc->security_carveout2_size_128kb), 8); |
| 89 | |
| 90 | /* BOM address set in gpu_region_init, below */ |
| 91 | carveout_from_regs(base_mib, size_mib, |
| 92 | read32(&mc->security_carveout2_bom), |
| 93 | read32(&mc->security_carveout2_bom_hi), |
| 94 | region_size_mb); |
| 95 | break; |
Tom Warren | 0bdb88b | 2015-08-03 14:58:11 -0700 | [diff] [blame] | 96 | case CARVEOUT_NVDEC: |
| 97 | /* These carveout regs use 128KB granularity - convert to MB */ |
| 98 | region_size_mb = DIV_ROUND_UP(read32(&mc->security_carveout1_size_128kb), 8); |
| 99 | |
| 100 | /* BOM address set in nvdec_region_init, below */ |
| 101 | carveout_from_regs(base_mib, size_mib, |
| 102 | read32(&mc->security_carveout1_bom), |
| 103 | read32(&mc->security_carveout1_bom_hi), |
| 104 | region_size_mb); |
| 105 | break; |
| 106 | case CARVEOUT_TSEC: |
| 107 | /* These carveout regs use 128KB granularity - convert to MB */ |
| 108 | region_size_mb = DIV_ROUND_UP(read32(&mc->security_carveout4_size_128kb), 8); |
| 109 | |
| 110 | /* BOM address set in tsec_region_init, below. |
| 111 | * Since the TSEC region consumes 2 carveouts, and is |
| 112 | * expected to be split evenly between the two, size_mib |
| 113 | * is doubled here. |
| 114 | */ |
| 115 | region_size_mb *= 2; |
| 116 | carveout_from_regs(base_mib, size_mib, |
| 117 | read32(&mc->security_carveout4_bom), |
| 118 | read32(&mc->security_carveout4_bom_hi), |
| 119 | region_size_mb); |
| 120 | break; |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 121 | default: |
| 122 | break; |
| 123 | } |
| 124 | } |
| 125 | |
| 126 | void print_carveouts(void) |
| 127 | { |
| 128 | int i; |
| 129 | printk(BIOS_INFO, "Carveout ranges:\n"); |
| 130 | for (i = 0; i < CARVEOUT_NUM; i++) { |
| 131 | uintptr_t base, end; |
| 132 | size_t size; |
| 133 | carveout_range(i, &base, &size); |
| 134 | end = base + size; |
| 135 | if (end && base) |
| 136 | printk(BIOS_INFO, "ID:%d [%lx - %lx)\n", i, |
| 137 | (unsigned long)base * MiB, |
| 138 | (unsigned long)end * MiB); |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | /* |
| 143 | * Memory Map is as follows |
| 144 | * |
| 145 | * ------------------------------ <-- Start of DRAM |
| 146 | * | | |
| 147 | * | Available DRAM | |
| 148 | * |____________________________| |
| 149 | * | | |
| 150 | * | CBMEM | |
| 151 | * |____________________________| |
| 152 | * | | |
| 153 | * | Other carveouts | |
| 154 | * | (with dynamic allocation) | |
| 155 | * |____________________________| |
| 156 | * | | |
| 157 | * | TZ carveout of size | |
| 158 | * | TRUSTZONE_CARVEOUT_SIZE_MB | |
| 159 | * |____________________________| <-- 0x100000000 |
| 160 | * | | |
| 161 | * | Available DRAM | |
| 162 | * | | |
| 163 | * ------------------------------ <-- End of DRAM |
| 164 | * |
| 165 | */ |
| 166 | static void memory_in_range(uintptr_t *base_mib, uintptr_t *end_mib, |
| 167 | int ignore_carveout_id) |
| 168 | { |
| 169 | uintptr_t base; |
| 170 | uintptr_t end; |
| 171 | int i; |
| 172 | |
| 173 | base = (uintptr_t)_dram / MiB; |
| 174 | end = base + sdram_size_mb(); |
| 175 | |
| 176 | /* Requested limits out of range. */ |
| 177 | if (*end_mib <= base || *base_mib >= end) { |
| 178 | *end_mib = *base_mib = 0; |
| 179 | return; |
| 180 | } |
| 181 | |
| 182 | /* Clip region to passed in limits. */ |
| 183 | if (*end_mib < end) |
| 184 | end = *end_mib; |
| 185 | if (*base_mib > base) |
| 186 | base = *base_mib; |
| 187 | |
| 188 | for (i = 0; i < CARVEOUT_NUM; i++) { |
| 189 | uintptr_t carveout_base; |
| 190 | uintptr_t carveout_end; |
| 191 | size_t carveout_size; |
| 192 | |
| 193 | if (i == ignore_carveout_id) |
| 194 | continue; |
| 195 | |
| 196 | carveout_range(i, &carveout_base, &carveout_size); |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 197 | if (carveout_size == 0) |
| 198 | continue; |
| 199 | |
| 200 | carveout_end = carveout_base + carveout_size; |
| 201 | |
| 202 | /* Bypass carveouts out of requested range. */ |
| 203 | if (carveout_base >= end || carveout_end <= base) |
| 204 | continue; |
| 205 | |
| 206 | /* |
| 207 | * This is crude, but the assumption is that carveouts live |
| 208 | * at the upper range of physical memory. Therefore, update |
| 209 | * the end address to be equal to the base of the carveout. |
| 210 | */ |
| 211 | end = carveout_base; |
| 212 | } |
| 213 | |
| 214 | *base_mib = base; |
| 215 | *end_mib = end; |
| 216 | } |
| 217 | |
| 218 | void memory_in_range_below_4gb(uintptr_t *base_mib, uintptr_t *end_mib) |
| 219 | { |
| 220 | *base_mib = 0; |
| 221 | *end_mib = 4096; |
| 222 | memory_in_range(base_mib, end_mib, CARVEOUT_NUM); |
| 223 | } |
| 224 | |
| 225 | void memory_in_range_above_4gb(uintptr_t *base_mib, uintptr_t *end_mib) |
| 226 | { |
| 227 | *base_mib = 4096; |
| 228 | *end_mib = ~0UL; |
| 229 | memory_in_range(base_mib, end_mib, CARVEOUT_NUM); |
| 230 | } |
| 231 | |
| 232 | void trustzone_region_init(void) |
| 233 | { |
| 234 | struct tegra_mc_regs * const mc = (void *)(uintptr_t)TEGRA_MC_BASE; |
| 235 | uintptr_t end = 4096; |
| 236 | |
| 237 | /* Already has been initialized. */ |
| 238 | if (tz_size_mib != 0 && tz_base_mib != 0) |
| 239 | return; |
| 240 | |
| 241 | /* |
| 242 | * Get memory layout below 4GiB ignoring the TZ carveout because |
| 243 | * that's the one to initialize. |
| 244 | */ |
| 245 | tz_base_mib = end - tz_size_mib; |
| 246 | memory_in_range(&tz_base_mib, &end, CARVEOUT_TZ); |
| 247 | |
| 248 | /* |
| 249 | * IMPORTANT!!!!! |
| 250 | * We need to ensure that trustzone region is located at the end of |
| 251 | * 32-bit address space. If any carveout is allocated space before |
| 252 | * trustzone_region_init is called, then this assert will ensure that |
| 253 | * the boot flow fails. If you are here because of this assert, please |
| 254 | * move your call to initialize carveout after trustzone_region_init in |
| 255 | * romstage and ramstage. |
| 256 | */ |
| 257 | assert(end == 4096); |
| 258 | |
| 259 | /* AVP cannot set the TZ registers proper as it is always non-secure. */ |
| 260 | if (context_avp()) |
| 261 | return; |
| 262 | |
| 263 | /* Set the carveout region. */ |
| 264 | write32(&mc->security_cfg0, tz_base_mib << 20); |
| 265 | write32(&mc->security_cfg1, tz_size_mib); |
| 266 | |
| 267 | /* Enable SMMU translations */ |
| 268 | write32(&mc->smmu_config, MC_SMMU_CONFIG_ENABLE); |
| 269 | } |
| 270 | |
| 271 | void gpu_region_init(void) |
| 272 | { |
| 273 | struct tegra_mc_regs * const mc = (void *)(uintptr_t)TEGRA_MC_BASE; |
| 274 | uintptr_t gpu_base_mib = 0, end = 4096; |
| 275 | size_t gpu_size_mib = GPU_CARVEOUT_SIZE_MB; |
| 276 | |
| 277 | /* Get memory layout below 4GiB */ |
| 278 | memory_in_range(&gpu_base_mib, &end, CARVEOUT_GPU); |
| 279 | gpu_base_mib = end - gpu_size_mib; |
| 280 | |
| 281 | /* Set the carveout2 base address. Everything else has been set in the BCT cfg/inc */ |
| 282 | write32(&mc->security_carveout2_bom, gpu_base_mib << 20); |
| 283 | write32(&mc->security_carveout2_bom_hi, 0); |
| 284 | |
| 285 | /* Set the locked bit. This will lock out any other writes! */ |
Julius Werner | 55009af | 2019-12-02 22:03:27 -0800 | [diff] [blame] | 286 | setbits32(&mc->security_carveout2_cfg0, MC_SECURITY_CARVEOUT_LOCKED); |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 287 | |
| 288 | /* Set the carveout3 base to 0, unused */ |
| 289 | write32(&mc->security_carveout3_bom, 0); |
| 290 | write32(&mc->security_carveout3_bom_hi, 0); |
| 291 | |
| 292 | /* Set the locked bit. This will lock out any other writes! */ |
Julius Werner | 55009af | 2019-12-02 22:03:27 -0800 | [diff] [blame] | 293 | setbits32(&mc->security_carveout3_cfg0, MC_SECURITY_CARVEOUT_LOCKED); |
Patrick Georgi | 40a3e32 | 2015-06-22 19:41:29 +0200 | [diff] [blame] | 294 | } |
Tom Warren | 0bdb88b | 2015-08-03 14:58:11 -0700 | [diff] [blame] | 295 | |
| 296 | void nvdec_region_init(void) |
| 297 | { |
| 298 | struct tegra_mc_regs * const mc = (void *)(uintptr_t)TEGRA_MC_BASE; |
| 299 | uintptr_t nvdec_base_mib = 0, end = 4096; |
| 300 | size_t nvdec_size_mib = NVDEC_CARVEOUT_SIZE_MB; |
| 301 | |
| 302 | /* Get memory layout below 4GiB */ |
| 303 | memory_in_range(&nvdec_base_mib, &end, CARVEOUT_NVDEC); |
| 304 | nvdec_base_mib = end - nvdec_size_mib; |
| 305 | |
| 306 | /* Set the carveout1 base address. Everything else has been set in the BCT cfg/inc */ |
| 307 | write32(&mc->security_carveout1_bom, nvdec_base_mib << 20); |
| 308 | write32(&mc->security_carveout1_bom_hi, 0); |
| 309 | |
| 310 | /* Set the locked bit. This will lock out any other writes! */ |
Julius Werner | 55009af | 2019-12-02 22:03:27 -0800 | [diff] [blame] | 311 | setbits32(&mc->security_carveout1_cfg0, MC_SECURITY_CARVEOUT_LOCKED); |
Tom Warren | 0bdb88b | 2015-08-03 14:58:11 -0700 | [diff] [blame] | 312 | } |
| 313 | |
| 314 | void tsec_region_init(void) |
| 315 | { |
| 316 | struct tegra_mc_regs * const mc = (void *)(uintptr_t)TEGRA_MC_BASE; |
| 317 | uintptr_t tsec_base_mib = 0, end = 4096; |
| 318 | size_t tsec_size_mib = TSEC_CARVEOUT_SIZE_MB; |
| 319 | |
| 320 | /* Get memory layout below 4GiB */ |
| 321 | memory_in_range(&tsec_base_mib, &end, CARVEOUT_TSEC); |
| 322 | tsec_base_mib = end - tsec_size_mib; |
| 323 | |
| 324 | /* |
| 325 | * Set the carveout4/5 base address. Everything else has been set in the BCT cfg/inc |
| 326 | * Note that the TSEC range is split evenly between the 2 carveouts (i.e. 1MB each) |
| 327 | */ |
| 328 | write32(&mc->security_carveout4_bom, tsec_base_mib << 20); |
| 329 | write32(&mc->security_carveout4_bom_hi, 0); |
| 330 | write32(&mc->security_carveout5_bom, (tsec_base_mib + (TSEC_CARVEOUT_SIZE_MB / 2)) << 20); |
| 331 | write32(&mc->security_carveout5_bom_hi, 0); |
| 332 | |
| 333 | /* Set the locked bit. This will lock out any other writes! */ |
Julius Werner | 55009af | 2019-12-02 22:03:27 -0800 | [diff] [blame] | 334 | setbits32(&mc->security_carveout4_cfg0, MC_SECURITY_CARVEOUT_LOCKED); |
| 335 | setbits32(&mc->security_carveout5_cfg0, MC_SECURITY_CARVEOUT_LOCKED); |
Tom Warren | 0bdb88b | 2015-08-03 14:58:11 -0700 | [diff] [blame] | 336 | } |
Tom Warren | 5096787 | 2015-08-04 13:08:50 -0700 | [diff] [blame] | 337 | |
| 338 | void vpr_region_init(void) |
| 339 | { |
| 340 | struct tegra_mc_regs * const mc = (void *)(uintptr_t)TEGRA_MC_BASE; |
| 341 | uintptr_t vpr_base_mib = 0, end = 4096; |
| 342 | size_t vpr_size_mib = VPR_CARVEOUT_SIZE_MB; |
| 343 | |
| 344 | /* Get memory layout below 4GiB */ |
| 345 | memory_in_range(&vpr_base_mib, &end, CARVEOUT_VPR); |
| 346 | vpr_base_mib = end - vpr_size_mib; |
| 347 | |
| 348 | /* Set the carveout base address and size */ |
| 349 | write32(&mc->video_protect_bom, vpr_base_mib << 20); |
| 350 | write32(&mc->video_protect_bom_adr_hi, 0); |
| 351 | write32(&mc->video_protect_size_mb, vpr_size_mib); |
| 352 | |
| 353 | /* Set the locked bit. This will lock out any other writes! */ |
| 354 | write32(&mc->video_protect_reg_ctrl, MC_VPR_WR_ACCESS_DISABLE); |
| 355 | } |