1 /* 2 * Copyright 2016 Texas Instruments, Inc. 3 * 4 * SPDX-License-Identifier: GPL-2.0+ 5 */ 6 7 #include <common.h> 8 #include <linux/libfdt.h> 9 #include <fdt_support.h> 10 #include <malloc.h> 11 12 #include <asm/omap_common.h> 13 #include <asm/arch-omap5/sys_proto.h> 14 15 #ifdef CONFIG_TI_SECURE_DEVICE 16 17 /* Give zero values if not already defined */ 18 #ifndef TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ 19 #define TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ (0) 20 #endif 21 #ifndef CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ 22 #define CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ (0) 23 #endif 24 25 static u32 hs_irq_skip[] = { 26 8, /* Secure violation reporting interrupt */ 27 15, /* One interrupt for SDMA by secure world */ 28 118 /* One interrupt for Crypto DMA by secure world */ 29 }; 30 31 static int ft_hs_fixup_crossbar(void *fdt, bd_t *bd) 32 { 33 const char *path; 34 int offs; 35 int ret; 36 int len, i, old_cnt, new_cnt; 37 u32 *temp; 38 const u32 *p_data; 39 40 /* 41 * Increase the size of the fdt 42 * so we have some breathing room 43 */ 44 ret = fdt_increase_size(fdt, 512); 45 if (ret < 0) { 46 printf("Could not increase size of device tree: %s\n", 47 fdt_strerror(ret)); 48 return ret; 49 } 50 51 /* Reserve IRQs that are used/needed by secure world */ 52 path = "/ocp/crossbar"; 53 offs = fdt_path_offset(fdt, path); 54 if (offs < 0) { 55 debug("Node %s not found.\n", path); 56 return 0; 57 } 58 59 /* Get current entries */ 60 p_data = fdt_getprop(fdt, offs, "ti,irqs-skip", &len); 61 if (p_data) 62 old_cnt = len / sizeof(u32); 63 else 64 old_cnt = 0; 65 66 new_cnt = sizeof(hs_irq_skip) / 67 sizeof(hs_irq_skip[0]); 68 69 /* Create new/updated skip list for HS parts */ 70 temp = malloc(sizeof(u32) * (old_cnt + new_cnt)); 71 for (i = 0; i < new_cnt; i++) 72 temp[i] = cpu_to_fdt32(hs_irq_skip[i]); 73 for (i = 0; i < old_cnt; i++) 74 temp[i + new_cnt] = p_data[i]; 75 76 /* Blow away old data and set new data */ 77 fdt_delprop(fdt, offs, "ti,irqs-skip"); 78 ret = fdt_setprop(fdt, offs, "ti,irqs-skip", 79 temp, 80 (old_cnt + new_cnt) * sizeof(u32)); 81 free(temp); 82 83 /* Check if the update worked */ 84 if (ret < 0) { 85 printf("Could not add ti,irqs-skip property to node %s: %s\n", 86 path, fdt_strerror(ret)); 87 return ret; 88 } 89 90 return 0; 91 } 92 93 #if ((TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ != 0) || \ 94 (CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ != 0)) 95 static int ft_hs_fixup_sram(void *fdt, bd_t *bd) 96 { 97 const char *path; 98 int offs; 99 int ret; 100 u32 temp[2]; 101 102 /* 103 * Update SRAM reservations on secure devices. The OCMC RAM 104 * is always reserved for secure use from the start of that 105 * memory region 106 */ 107 path = "/ocp/ocmcram@40300000/sram-hs"; 108 offs = fdt_path_offset(fdt, path); 109 if (offs < 0) { 110 debug("Node %s not found.\n", path); 111 return 0; 112 } 113 114 /* relative start offset */ 115 temp[0] = cpu_to_fdt32(0); 116 /* reservation size */ 117 temp[1] = cpu_to_fdt32(max(TI_OMAP5_SECURE_BOOT_RESV_SRAM_SZ, 118 CONFIG_SECURE_RUNTIME_RESV_SRAM_SZ)); 119 fdt_delprop(fdt, offs, "reg"); 120 ret = fdt_setprop(fdt, offs, "reg", temp, 2 * sizeof(u32)); 121 if (ret < 0) { 122 printf("Could not add reg property to node %s: %s\n", 123 path, fdt_strerror(ret)); 124 return ret; 125 } 126 127 return 0; 128 } 129 #else 130 static int ft_hs_fixup_sram(void *fdt, bd_t *bd) { return 0; } 131 #endif 132 133 static void ft_hs_fixups(void *fdt, bd_t *bd) 134 { 135 /* Check we are running on an HS/EMU device type */ 136 if (GP_DEVICE != get_device_type()) { 137 if ((ft_hs_fixup_crossbar(fdt, bd) == 0) && 138 (ft_hs_disable_rng(fdt, bd) == 0) && 139 (ft_hs_fixup_sram(fdt, bd) == 0) && 140 (ft_hs_fixup_dram(fdt, bd) == 0) && 141 (ft_hs_add_tee(fdt, bd) == 0)) 142 return; 143 } else { 144 printf("ERROR: Incorrect device type (GP) detected!"); 145 } 146 /* Fixup failed or wrong device type */ 147 hang(); 148 } 149 #else 150 static void ft_hs_fixups(void *fdt, bd_t *bd) 151 { 152 } 153 #endif /* #ifdef CONFIG_TI_SECURE_DEVICE */ 154 155 #if defined(CONFIG_TARGET_DRA7XX_EVM) || defined(CONFIG_TARGET_AM57XX_EVM) 156 #define OPP_DSP_CLK_NUM 3 157 #define OPP_IVA_CLK_NUM 2 158 #define OPP_GPU_CLK_NUM 2 159 160 const char *dra7_opp_dsp_clk_names[OPP_DSP_CLK_NUM] = { 161 "dpll_dsp_ck", 162 "dpll_dsp_m2_ck", 163 "dpll_dsp_m3x2_ck", 164 }; 165 166 const char *dra7_opp_iva_clk_names[OPP_IVA_CLK_NUM] = { 167 "dpll_iva_ck", 168 "dpll_iva_m2_ck", 169 }; 170 171 const char *dra7_opp_gpu_clk_names[OPP_GPU_CLK_NUM] = { 172 "dpll_gpu_ck", 173 "dpll_gpu_m2_ck", 174 }; 175 176 /* DSPEVE voltage domain */ 177 u32 dra7_opp_dsp_clk_rates[NUM_OPPS][OPP_DSP_CLK_NUM] = { 178 {}, /*OPP_LOW */ 179 {600000000, 600000000, 400000000}, /* OPP_NOM */ 180 {700000000, 700000000, 466666667}, /* OPP_OD */ 181 {750000000, 750000000, 500000000}, /* OPP_HIGH */ 182 }; 183 184 /* IVA voltage domain */ 185 u32 dra7_opp_iva_clk_rates[NUM_OPPS][OPP_IVA_CLK_NUM] = { 186 {}, /* OPP_LOW */ 187 {1165000000, 388333334}, /* OPP_NOM */ 188 {860000000, 430000000}, /* OPP_OD */ 189 {1064000000, 532000000}, /* OPP_HIGH */ 190 }; 191 192 /* GPU voltage domain */ 193 u32 dra7_opp_gpu_clk_rates[NUM_OPPS][OPP_GPU_CLK_NUM] = { 194 {}, /* OPP_LOW */ 195 {1277000000, 425666667}, /* OPP_NOM */ 196 {1000000000, 500000000}, /* OPP_OD */ 197 {1064000000, 532000000}, /* OPP_HIGH */ 198 }; 199 200 static int ft_fixup_clocks(void *fdt, const char **names, u32 *rates, int num) 201 { 202 int offs, node_offs, ret, i; 203 uint32_t phandle; 204 205 offs = fdt_path_offset(fdt, "/ocp/l4@4a000000/cm_core_aon@5000/clocks"); 206 if (offs < 0) { 207 debug("Could not find cm_core_aon clocks node path offset : %s\n", 208 fdt_strerror(offs)); 209 return offs; 210 } 211 212 for (i = 0; i < num; i++) { 213 node_offs = fdt_subnode_offset(fdt, offs, names[i]); 214 if (node_offs < 0) { 215 debug("Could not find clock sub-node %s: %s\n", 216 names[i], fdt_strerror(node_offs)); 217 return offs; 218 } 219 220 phandle = fdt_get_phandle(fdt, node_offs); 221 if (!phandle) { 222 debug("Could not find phandle for clock %s\n", 223 names[i]); 224 return -1; 225 } 226 227 ret = fdt_setprop_u32(fdt, node_offs, "assigned-clocks", 228 phandle); 229 if (ret < 0) { 230 debug("Could not add assigned-clocks property to clock node %s: %s\n", 231 names[i], fdt_strerror(ret)); 232 return ret; 233 } 234 235 ret = fdt_setprop_u32(fdt, node_offs, "assigned-clock-rates", 236 rates[i]); 237 if (ret < 0) { 238 debug("Could not add assigned-clock-rates property to clock node %s: %s\n", 239 names[i], fdt_strerror(ret)); 240 return ret; 241 } 242 } 243 244 return 0; 245 } 246 247 static void ft_opp_clock_fixups(void *fdt, bd_t *bd) 248 { 249 const char **clk_names; 250 u32 *clk_rates; 251 int ret; 252 253 if (!is_dra72x() && !is_dra7xx()) 254 return; 255 256 /* fixup DSP clocks */ 257 clk_names = dra7_opp_dsp_clk_names; 258 clk_rates = dra7_opp_dsp_clk_rates[get_voltrail_opp(VOLT_EVE)]; 259 ret = ft_fixup_clocks(fdt, clk_names, clk_rates, OPP_DSP_CLK_NUM); 260 if (ret) { 261 printf("ft_fixup_clocks failed for DSP voltage domain: %s\n", 262 fdt_strerror(ret)); 263 return; 264 } 265 266 /* fixup IVA clocks */ 267 clk_names = dra7_opp_iva_clk_names; 268 clk_rates = dra7_opp_iva_clk_rates[get_voltrail_opp(VOLT_IVA)]; 269 ret = ft_fixup_clocks(fdt, clk_names, clk_rates, OPP_IVA_CLK_NUM); 270 if (ret) { 271 printf("ft_fixup_clocks failed for IVA voltage domain: %s\n", 272 fdt_strerror(ret)); 273 return; 274 } 275 276 /* fixup GPU clocks */ 277 clk_names = dra7_opp_gpu_clk_names; 278 clk_rates = dra7_opp_gpu_clk_rates[get_voltrail_opp(VOLT_GPU)]; 279 ret = ft_fixup_clocks(fdt, clk_names, clk_rates, OPP_GPU_CLK_NUM); 280 if (ret) { 281 printf("ft_fixup_clocks failed for GPU voltage domain: %s\n", 282 fdt_strerror(ret)); 283 return; 284 } 285 } 286 #else 287 static void ft_opp_clock_fixups(void *fdt, bd_t *bd) { } 288 #endif /* CONFIG_TARGET_DRA7XX_EVM || CONFIG_TARGET_AM57XX_EVM */ 289 290 /* 291 * Place for general cpu/SoC FDT fixups. Board specific 292 * fixups should remain in the board files which is where 293 * this function should be called from. 294 */ 295 void ft_cpu_setup(void *fdt, bd_t *bd) 296 { 297 ft_hs_fixups(fdt, bd); 298 ft_opp_clock_fixups(fdt, bd); 299 } 300