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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 | // SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright 2023 Toradex - https://www.toradex.com/ */ #include <asm/arch/k3-common-fdt.h> #include "common.h" #include <dm.h> #include <fdt_support.h> #include <linux/soc/ti/ti_sci_protocol.h> static int fdt_fixup_msmc_ram(void *blob, char *parent_path, char *node_name) { u64 msmc_start = 0, msmc_end = 0, msmc_size, reg[2]; struct ti_sci_handle *ti_sci = get_ti_sci_handle(); int ret, node, subnode, len, prev_node; u32 range[4], addr, size; const fdt32_t *sub_reg; ti_sci->ops.core_ops.query_msmc(ti_sci, &msmc_start, &msmc_end); msmc_size = msmc_end - msmc_start + 1; debug("%s: msmc_start = 0x%llx, msmc_size = 0x%llx\n", __func__, msmc_start, msmc_size); /* find or create "msmc_sram node */ ret = fdt_path_offset(blob, parent_path); if (ret < 0) return ret; node = fdt_find_or_add_subnode(blob, ret, node_name); if (node < 0) return node; ret = fdt_setprop_string(blob, node, "compatible", "mmio-sram"); if (ret < 0) return ret; reg[0] = cpu_to_fdt64(msmc_start); reg[1] = cpu_to_fdt64(msmc_size); ret = fdt_setprop(blob, node, "reg", reg, sizeof(reg)); if (ret < 0) return ret; fdt_setprop_cell(blob, node, "#address-cells", 1); fdt_setprop_cell(blob, node, "#size-cells", 1); range[0] = 0; range[1] = cpu_to_fdt32(msmc_start >> 32); range[2] = cpu_to_fdt32(msmc_start & 0xffffffff); range[3] = cpu_to_fdt32(msmc_size); ret = fdt_setprop(blob, node, "ranges", range, sizeof(range)); if (ret < 0) return ret; subnode = fdt_first_subnode(blob, node); prev_node = 0; /* Look for invalid subnodes and delete them */ while (subnode >= 0) { sub_reg = fdt_getprop(blob, subnode, "reg", &len); addr = fdt_read_number(sub_reg, 1); sub_reg++; size = fdt_read_number(sub_reg, 1); debug("%s: subnode = %d, addr = 0x%x. size = 0x%x\n", __func__, subnode, addr, size); if (addr + size > msmc_size || !strncmp(fdt_get_name(blob, subnode, &len), "sysfw", 5) || !strncmp(fdt_get_name(blob, subnode, &len), "tifs", 4) || !strncmp(fdt_get_name(blob, subnode, &len), "l3cache", 7)) { fdt_del_node(blob, subnode); debug("%s: deleting subnode %d\n", __func__, subnode); if (!prev_node) subnode = fdt_first_subnode(blob, node); else subnode = fdt_next_subnode(blob, prev_node); } else { prev_node = subnode; subnode = fdt_next_subnode(blob, prev_node); } } return 0; } int fdt_fixup_msmc_ram_k3(void *blob) { int ret; ret = fdt_fixup_msmc_ram(blob, "/bus@100000", "sram@70000000"); if (ret < 0) ret = fdt_fixup_msmc_ram(blob, "/interconnect@100000", "sram@70000000"); if (ret) printf("%s: fixing up msmc ram failed %d\n", __func__, ret); return ret; } int fdt_del_node_path(void *blob, const char *path) { int ret; int nodeoff; nodeoff = fdt_path_offset(blob, path); if (nodeoff < 0) return 0; /* Not found, skip it */ ret = fdt_del_node(blob, nodeoff); if (ret < 0) printf("Unable to delete node %s, err=%s\n", path, fdt_strerror(ret)); else debug("Deleted node %s\n", path); return ret; } static int fdt_fixup_reserved_memory(void *blob, const char *name, unsigned int new_address, unsigned int new_size) { int nodeoffset, subnode; int ret; struct fdt_memory carveout = { .start = new_address, }; /* Find reserved-memory */ nodeoffset = fdt_subnode_offset(blob, 0, "reserved-memory"); if (nodeoffset < 0) goto add_carveout; /* Find existing matching subnode and remove it */ fdt_for_each_subnode(subnode, blob, nodeoffset) { const char *node_name; fdt_addr_t addr; fdt_size_t size; /* Name matching */ node_name = fdt_get_name(blob, subnode, NULL); if (!name) return -EINVAL; if (!strncmp(node_name, name, strlen(name))) { /* Read out old size first */ addr = fdtdec_get_addr_size_auto_parent( blob, nodeoffset, subnode, "reg", 0, &size, false); if (addr == FDT_ADDR_T_NONE) return -EINVAL; new_size = size; /* Delete node */ ret = fdt_del_node(blob, subnode); if (ret < 0) return ret; /* Only one matching node */ break; } } add_carveout: carveout.end = new_address + new_size - 1; ret = fdtdec_add_reserved_memory(blob, name, &carveout, NULL, 0, NULL, FDTDEC_RESERVED_MEMORY_NO_MAP); if (ret < 0) return ret; return 0; } int fdt_fixup_reserved(void *blob) { int ret; ret = fdt_fixup_reserved_memory(blob, "tfa", CONFIG_K3_ATF_LOAD_ADDR, CONFIG_K3_ATF_RESERVED_SIZE); if (ret) return ret; return fdt_fixup_reserved_memory(blob, "optee", CONFIG_K3_OPTEE_LOAD_ADDR, CONFIG_K3_OPTEE_RESERVED_SIZE); } static int fdt_fixup_critical_trips(void *blob, int zoneoffset, int maxc) { int node, trip; node = fdt_subnode_offset(blob, zoneoffset, "trips"); if (node < 0) return -1; fdt_for_each_subnode(trip, blob, node) { const char *type = fdt_getprop(blob, trip, "type", NULL); if (!type || (strncmp(type, "critical", 8) != 0)) continue; if (fdt_setprop_u32(blob, trip, "temperature", 1000 * maxc) < 0) return -1; } return 0; } void fdt_fixup_thermal_critical_trips_k3(void *blob, int maxc) { int node, zone; node = fdt_path_offset(blob, "/thermal-zones"); if (node < 0) return; fdt_for_each_subnode(zone, blob, node) { if (fdt_fixup_critical_trips(blob, zone, maxc) < 0) printf("Failed to set temperature in %s critical trips\n", fdt_get_name(blob, zone, NULL)); } } |