164dbbd40SGerald Van Baren /* 264dbbd40SGerald Van Baren * (C) Copyright 2007 364dbbd40SGerald Van Baren * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com 464dbbd40SGerald Van Baren * 52a523f52SShengzhou Liu * Copyright 2010-2011 Freescale Semiconductor, Inc. 6a0342c08SKumar Gala * 71a459660SWolfgang Denk * SPDX-License-Identifier: GPL-2.0+ 864dbbd40SGerald Van Baren */ 964dbbd40SGerald Van Baren 1064dbbd40SGerald Van Baren #include <common.h> 113e303f74SAnton Vorontsov #include <stdio_dev.h> 1264dbbd40SGerald Van Baren #include <linux/ctype.h> 1364dbbd40SGerald Van Baren #include <linux/types.h> 1464dbbd40SGerald Van Baren #include <asm/global_data.h> 1564dbbd40SGerald Van Baren #include <libfdt.h> 1664dbbd40SGerald Van Baren #include <fdt_support.h> 17151c8b09SKumar Gala #include <exports.h> 1864dbbd40SGerald Van Baren 193bed2aafSKumar Gala /** 2094fb182cSAlexander Graf * fdt_getprop_u32_default_node - Return a node's property or a default 2194fb182cSAlexander Graf * 2294fb182cSAlexander Graf * @fdt: ptr to device tree 2394fb182cSAlexander Graf * @off: offset of node 2494fb182cSAlexander Graf * @cell: cell offset in property 2594fb182cSAlexander Graf * @prop: property name 2694fb182cSAlexander Graf * @dflt: default value if the property isn't found 2794fb182cSAlexander Graf * 2894fb182cSAlexander Graf * Convenience function to return a node's property or a default value if 2994fb182cSAlexander Graf * the property doesn't exist. 3094fb182cSAlexander Graf */ 3194fb182cSAlexander Graf u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell, 3294fb182cSAlexander Graf const char *prop, const u32 dflt) 3394fb182cSAlexander Graf { 3494fb182cSAlexander Graf const fdt32_t *val; 3594fb182cSAlexander Graf int len; 3694fb182cSAlexander Graf 3794fb182cSAlexander Graf val = fdt_getprop(fdt, off, prop, &len); 3894fb182cSAlexander Graf 3994fb182cSAlexander Graf /* Check if property exists */ 4094fb182cSAlexander Graf if (!val) 4194fb182cSAlexander Graf return dflt; 4294fb182cSAlexander Graf 4394fb182cSAlexander Graf /* Check if property is long enough */ 4494fb182cSAlexander Graf if (len < ((cell + 1) * sizeof(uint32_t))) 4594fb182cSAlexander Graf return dflt; 4694fb182cSAlexander Graf 4794fb182cSAlexander Graf return fdt32_to_cpu(*val); 4894fb182cSAlexander Graf } 4994fb182cSAlexander Graf 5094fb182cSAlexander Graf /** 513bed2aafSKumar Gala * fdt_getprop_u32_default - Find a node and return it's property or a default 523bed2aafSKumar Gala * 533bed2aafSKumar Gala * @fdt: ptr to device tree 543bed2aafSKumar Gala * @path: path of node 553bed2aafSKumar Gala * @prop: property name 563bed2aafSKumar Gala * @dflt: default value if the property isn't found 573bed2aafSKumar Gala * 583bed2aafSKumar Gala * Convenience function to find a node and return it's property or a 593bed2aafSKumar Gala * default value if it doesn't exist. 603bed2aafSKumar Gala */ 6107e12784SGabe Black u32 fdt_getprop_u32_default(const void *fdt, const char *path, 6207e12784SGabe Black const char *prop, const u32 dflt) 633bed2aafSKumar Gala { 643bed2aafSKumar Gala int off; 653bed2aafSKumar Gala 663bed2aafSKumar Gala off = fdt_path_offset(fdt, path); 673bed2aafSKumar Gala if (off < 0) 683bed2aafSKumar Gala return dflt; 693bed2aafSKumar Gala 7094fb182cSAlexander Graf return fdt_getprop_u32_default_node(fdt, off, 0, prop, dflt); 713bed2aafSKumar Gala } 7264dbbd40SGerald Van Baren 73a3c2933eSKumar Gala /** 74a3c2933eSKumar Gala * fdt_find_and_setprop: Find a node and set it's property 75a3c2933eSKumar Gala * 76a3c2933eSKumar Gala * @fdt: ptr to device tree 77a3c2933eSKumar Gala * @node: path of node 78a3c2933eSKumar Gala * @prop: property name 79a3c2933eSKumar Gala * @val: ptr to new value 80a3c2933eSKumar Gala * @len: length of new property value 81a3c2933eSKumar Gala * @create: flag to create the property if it doesn't exist 82a3c2933eSKumar Gala * 83a3c2933eSKumar Gala * Convenience function to directly set a property given the path to the node. 84a3c2933eSKumar Gala */ 85a3c2933eSKumar Gala int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, 86a3c2933eSKumar Gala const void *val, int len, int create) 87a3c2933eSKumar Gala { 888d04f02fSKumar Gala int nodeoff = fdt_path_offset(fdt, node); 89a3c2933eSKumar Gala 90a3c2933eSKumar Gala if (nodeoff < 0) 91a3c2933eSKumar Gala return nodeoff; 92a3c2933eSKumar Gala 938aa5ec6eSKim Phillips if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) 94a3c2933eSKumar Gala return 0; /* create flag not set; so exit quietly */ 95a3c2933eSKumar Gala 96a3c2933eSKumar Gala return fdt_setprop(fdt, nodeoff, prop, val, len); 97a3c2933eSKumar Gala } 98a3c2933eSKumar Gala 998edb2192SMasahiro Yamada /** 100a9e8e291SSimon Glass * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node 101a9e8e291SSimon Glass * 1028edb2192SMasahiro Yamada * @fdt: pointer to the device tree blob 1038edb2192SMasahiro Yamada * @parentoffset: structure block offset of a node 1048edb2192SMasahiro Yamada * @name: name of the subnode to locate 1058edb2192SMasahiro Yamada * 1068edb2192SMasahiro Yamada * fdt_subnode_offset() finds a subnode of the node with a given name. 1078edb2192SMasahiro Yamada * If the subnode does not exist, it will be created. 1088edb2192SMasahiro Yamada */ 109a9e8e291SSimon Glass int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name) 1108edb2192SMasahiro Yamada { 1118edb2192SMasahiro Yamada int offset; 1128edb2192SMasahiro Yamada 1138edb2192SMasahiro Yamada offset = fdt_subnode_offset(fdt, parentoffset, name); 1148edb2192SMasahiro Yamada 1158edb2192SMasahiro Yamada if (offset == -FDT_ERR_NOTFOUND) 1168edb2192SMasahiro Yamada offset = fdt_add_subnode(fdt, parentoffset, name); 1178edb2192SMasahiro Yamada 1188edb2192SMasahiro Yamada if (offset < 0) 1198edb2192SMasahiro Yamada printf("%s: %s: %s\n", __func__, name, fdt_strerror(offset)); 1208edb2192SMasahiro Yamada 1218edb2192SMasahiro Yamada return offset; 1228edb2192SMasahiro Yamada } 1238edb2192SMasahiro Yamada 124972f2a89SMasahiro Yamada /* rename to CONFIG_OF_STDOUT_PATH ? */ 125972f2a89SMasahiro Yamada #if defined(OF_STDOUT_PATH) 126972f2a89SMasahiro Yamada static int fdt_fixup_stdout(void *fdt, int chosenoff) 127972f2a89SMasahiro Yamada { 128972f2a89SMasahiro Yamada return fdt_setprop(fdt, chosenoff, "linux,stdout-path", 129972f2a89SMasahiro Yamada OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1); 130972f2a89SMasahiro Yamada } 131972f2a89SMasahiro Yamada #elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX) 1323e303f74SAnton Vorontsov static void fdt_fill_multisername(char *sername, size_t maxlen) 1333e303f74SAnton Vorontsov { 1343e303f74SAnton Vorontsov const char *outname = stdio_devices[stdout]->name; 1353e303f74SAnton Vorontsov 1363e303f74SAnton Vorontsov if (strcmp(outname, "serial") > 0) 1373e303f74SAnton Vorontsov strncpy(sername, outname, maxlen); 1383e303f74SAnton Vorontsov 1393e303f74SAnton Vorontsov /* eserial? */ 1403e303f74SAnton Vorontsov if (strcmp(outname + 1, "serial") > 0) 1413e303f74SAnton Vorontsov strncpy(sername, outname + 1, maxlen); 1423e303f74SAnton Vorontsov } 1433e303f74SAnton Vorontsov 14440777812SDetlev Zundel static int fdt_fixup_stdout(void *fdt, int chosenoff) 145151c8b09SKumar Gala { 146972f2a89SMasahiro Yamada int err; 147972f2a89SMasahiro Yamada int aliasoff; 148151c8b09SKumar Gala char sername[9] = { 0 }; 149972f2a89SMasahiro Yamada const void *path; 150972f2a89SMasahiro Yamada int len; 151972f2a89SMasahiro Yamada char tmp[256]; /* long enough */ 152151c8b09SKumar Gala 1533e303f74SAnton Vorontsov fdt_fill_multisername(sername, sizeof(sername) - 1); 1543e303f74SAnton Vorontsov if (!sername[0]) 155151c8b09SKumar Gala sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); 156151c8b09SKumar Gala 157972f2a89SMasahiro Yamada aliasoff = fdt_path_offset(fdt, "/aliases"); 158972f2a89SMasahiro Yamada if (aliasoff < 0) { 159972f2a89SMasahiro Yamada err = aliasoff; 160972f2a89SMasahiro Yamada goto error; 161151c8b09SKumar Gala } 162972f2a89SMasahiro Yamada 163972f2a89SMasahiro Yamada path = fdt_getprop(fdt, aliasoff, sername, &len); 164972f2a89SMasahiro Yamada if (!path) { 165151c8b09SKumar Gala err = len; 166972f2a89SMasahiro Yamada goto error; 167151c8b09SKumar Gala } 168972f2a89SMasahiro Yamada 169972f2a89SMasahiro Yamada /* fdt_setprop may break "path" so we copy it to tmp buffer */ 170972f2a89SMasahiro Yamada memcpy(tmp, path, len); 171972f2a89SMasahiro Yamada 172972f2a89SMasahiro Yamada err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len); 173972f2a89SMasahiro Yamada error: 174151c8b09SKumar Gala if (err < 0) 175151c8b09SKumar Gala printf("WARNING: could not set linux,stdout-path %s.\n", 176151c8b09SKumar Gala fdt_strerror(err)); 177151c8b09SKumar Gala 178151c8b09SKumar Gala return err; 179151c8b09SKumar Gala } 180972f2a89SMasahiro Yamada #else 181972f2a89SMasahiro Yamada static int fdt_fixup_stdout(void *fdt, int chosenoff) 182972f2a89SMasahiro Yamada { 183972f2a89SMasahiro Yamada return 0; 184972f2a89SMasahiro Yamada } 185151c8b09SKumar Gala #endif 186151c8b09SKumar Gala 187f18295d3SMasahiro Yamada static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name, 188f18295d3SMasahiro Yamada uint64_t val, int is_u64) 189f18295d3SMasahiro Yamada { 190f18295d3SMasahiro Yamada if (is_u64) 191f18295d3SMasahiro Yamada return fdt_setprop_u64(fdt, nodeoffset, name, val); 192f18295d3SMasahiro Yamada else 193f18295d3SMasahiro Yamada return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val); 194f18295d3SMasahiro Yamada } 195f18295d3SMasahiro Yamada 196f18295d3SMasahiro Yamada 197dbe963aeSMasahiro Yamada int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) 19864dbbd40SGerald Van Baren { 199f18295d3SMasahiro Yamada int nodeoffset; 2002a1a2cb6SKumar Gala int err, j, total; 201f18295d3SMasahiro Yamada int is_u64; 2022a1a2cb6SKumar Gala uint64_t addr, size; 20364dbbd40SGerald Van Baren 20450babaf8SMasahiro Yamada /* just return if the size of initrd is zero */ 20550babaf8SMasahiro Yamada if (initrd_start == initrd_end) 20650babaf8SMasahiro Yamada return 0; 20750babaf8SMasahiro Yamada 2088edb2192SMasahiro Yamada /* find or create "/chosen" node. */ 2098edb2192SMasahiro Yamada nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); 2108edb2192SMasahiro Yamada if (nodeoffset < 0) 2112a1a2cb6SKumar Gala return nodeoffset; 21264dbbd40SGerald Van Baren 2132a1a2cb6SKumar Gala total = fdt_num_mem_rsv(fdt); 214c28abb9cSGerald Van Baren 215c28abb9cSGerald Van Baren /* 216c28abb9cSGerald Van Baren * Look for an existing entry and update it. If we don't find 217c28abb9cSGerald Van Baren * the entry, we will j be the next available slot. 218c28abb9cSGerald Van Baren */ 2198d04f02fSKumar Gala for (j = 0; j < total; j++) { 2208d04f02fSKumar Gala err = fdt_get_mem_rsv(fdt, j, &addr, &size); 2218d04f02fSKumar Gala if (addr == initrd_start) { 2228d04f02fSKumar Gala fdt_del_mem_rsv(fdt, j); 223c28abb9cSGerald Van Baren break; 224c28abb9cSGerald Van Baren } 225c28abb9cSGerald Van Baren } 2268d04f02fSKumar Gala 227ce6b27a8SGrant Likely err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); 22864dbbd40SGerald Van Baren if (err < 0) { 2292a1a2cb6SKumar Gala printf("fdt_initrd: %s\n", fdt_strerror(err)); 23064dbbd40SGerald Van Baren return err; 23164dbbd40SGerald Van Baren } 2322a1a2cb6SKumar Gala 233*933cdbb4SSimon Glass is_u64 = (fdt_address_cells(fdt, 0) == 2); 234f77a606aSDavid Feng 235f18295d3SMasahiro Yamada err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start", 236f18295d3SMasahiro Yamada (uint64_t)initrd_start, is_u64); 237f18295d3SMasahiro Yamada 2382a1a2cb6SKumar Gala if (err < 0) { 239dbe963aeSMasahiro Yamada printf("WARNING: could not set linux,initrd-start %s.\n", 2402a1a2cb6SKumar Gala fdt_strerror(err)); 2412a1a2cb6SKumar Gala return err; 2422a1a2cb6SKumar Gala } 243f18295d3SMasahiro Yamada 244f18295d3SMasahiro Yamada err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end", 245f18295d3SMasahiro Yamada (uint64_t)initrd_end, is_u64); 246f18295d3SMasahiro Yamada 2472a1a2cb6SKumar Gala if (err < 0) { 2482a1a2cb6SKumar Gala printf("WARNING: could not set linux,initrd-end %s.\n", 2492a1a2cb6SKumar Gala fdt_strerror(err)); 2502a1a2cb6SKumar Gala 2512a1a2cb6SKumar Gala return err; 2522a1a2cb6SKumar Gala } 2532a1a2cb6SKumar Gala 2542a1a2cb6SKumar Gala return 0; 2552a1a2cb6SKumar Gala } 2562a1a2cb6SKumar Gala 257bc6ed0f9SMasahiro Yamada int fdt_chosen(void *fdt) 2582a1a2cb6SKumar Gala { 2592a1a2cb6SKumar Gala int nodeoffset; 2602a1a2cb6SKumar Gala int err; 2612a1a2cb6SKumar Gala char *str; /* used to set string properties */ 2622a1a2cb6SKumar Gala 2632a1a2cb6SKumar Gala err = fdt_check_header(fdt); 2642a1a2cb6SKumar Gala if (err < 0) { 2652a1a2cb6SKumar Gala printf("fdt_chosen: %s\n", fdt_strerror(err)); 2662a1a2cb6SKumar Gala return err; 26764dbbd40SGerald Van Baren } 26864dbbd40SGerald Van Baren 2698edb2192SMasahiro Yamada /* find or create "/chosen" node. */ 2708edb2192SMasahiro Yamada nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); 2718edb2192SMasahiro Yamada if (nodeoffset < 0) 27264dbbd40SGerald Van Baren return nodeoffset; 27364dbbd40SGerald Van Baren 27464dbbd40SGerald Van Baren str = getenv("bootargs"); 275972f2a89SMasahiro Yamada if (str) { 276972f2a89SMasahiro Yamada err = fdt_setprop(fdt, nodeoffset, "bootargs", str, 277972f2a89SMasahiro Yamada strlen(str) + 1); 278972f2a89SMasahiro Yamada if (err < 0) { 2795fe6be62SGerald Van Baren printf("WARNING: could not set bootargs %s.\n", 28035ec398fSGerald Van Baren fdt_strerror(err)); 281972f2a89SMasahiro Yamada return err; 282972f2a89SMasahiro Yamada } 28364dbbd40SGerald Van Baren } 2842a1a2cb6SKumar Gala 285972f2a89SMasahiro Yamada return fdt_fixup_stdout(fdt, nodeoffset); 28664dbbd40SGerald Van Baren } 28764dbbd40SGerald Van Baren 288e93becf8SKumar Gala void do_fixup_by_path(void *fdt, const char *path, const char *prop, 289e93becf8SKumar Gala const void *val, int len, int create) 290e93becf8SKumar Gala { 291e93becf8SKumar Gala #if defined(DEBUG) 292e93becf8SKumar Gala int i; 293d9ad115bSKumar Gala debug("Updating property '%s/%s' = ", path, prop); 294e93becf8SKumar Gala for (i = 0; i < len; i++) 295e93becf8SKumar Gala debug(" %.2x", *(u8*)(val+i)); 296e93becf8SKumar Gala debug("\n"); 297e93becf8SKumar Gala #endif 298e93becf8SKumar Gala int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); 299e93becf8SKumar Gala if (rc) 300e93becf8SKumar Gala printf("Unable to update property %s:%s, err=%s\n", 301e93becf8SKumar Gala path, prop, fdt_strerror(rc)); 302e93becf8SKumar Gala } 303e93becf8SKumar Gala 304e93becf8SKumar Gala void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, 305e93becf8SKumar Gala u32 val, int create) 306e93becf8SKumar Gala { 3078aa5ec6eSKim Phillips fdt32_t tmp = cpu_to_fdt32(val); 3088aa5ec6eSKim Phillips do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); 309e93becf8SKumar Gala } 310e93becf8SKumar Gala 3119eb77ceaSKumar Gala void do_fixup_by_prop(void *fdt, 3129eb77ceaSKumar Gala const char *pname, const void *pval, int plen, 3139eb77ceaSKumar Gala const char *prop, const void *val, int len, 3149eb77ceaSKumar Gala int create) 3159eb77ceaSKumar Gala { 3169eb77ceaSKumar Gala int off; 3179eb77ceaSKumar Gala #if defined(DEBUG) 3189eb77ceaSKumar Gala int i; 319d9ad115bSKumar Gala debug("Updating property '%s' = ", prop); 3209eb77ceaSKumar Gala for (i = 0; i < len; i++) 3219eb77ceaSKumar Gala debug(" %.2x", *(u8*)(val+i)); 3229eb77ceaSKumar Gala debug("\n"); 3239eb77ceaSKumar Gala #endif 3249eb77ceaSKumar Gala off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); 3259eb77ceaSKumar Gala while (off != -FDT_ERR_NOTFOUND) { 3268aa5ec6eSKim Phillips if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) 3279eb77ceaSKumar Gala fdt_setprop(fdt, off, prop, val, len); 3289eb77ceaSKumar Gala off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); 3299eb77ceaSKumar Gala } 3309eb77ceaSKumar Gala } 3319eb77ceaSKumar Gala 3329eb77ceaSKumar Gala void do_fixup_by_prop_u32(void *fdt, 3339eb77ceaSKumar Gala const char *pname, const void *pval, int plen, 3349eb77ceaSKumar Gala const char *prop, u32 val, int create) 3359eb77ceaSKumar Gala { 3368aa5ec6eSKim Phillips fdt32_t tmp = cpu_to_fdt32(val); 3378aa5ec6eSKim Phillips do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); 3389eb77ceaSKumar Gala } 3399eb77ceaSKumar Gala 3409eb77ceaSKumar Gala void do_fixup_by_compat(void *fdt, const char *compat, 3419eb77ceaSKumar Gala const char *prop, const void *val, int len, int create) 3429eb77ceaSKumar Gala { 3439eb77ceaSKumar Gala int off = -1; 3449eb77ceaSKumar Gala #if defined(DEBUG) 3459eb77ceaSKumar Gala int i; 346d9ad115bSKumar Gala debug("Updating property '%s' = ", prop); 3479eb77ceaSKumar Gala for (i = 0; i < len; i++) 3489eb77ceaSKumar Gala debug(" %.2x", *(u8*)(val+i)); 3499eb77ceaSKumar Gala debug("\n"); 3509eb77ceaSKumar Gala #endif 3519eb77ceaSKumar Gala off = fdt_node_offset_by_compatible(fdt, -1, compat); 3529eb77ceaSKumar Gala while (off != -FDT_ERR_NOTFOUND) { 3538aa5ec6eSKim Phillips if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) 3549eb77ceaSKumar Gala fdt_setprop(fdt, off, prop, val, len); 3559eb77ceaSKumar Gala off = fdt_node_offset_by_compatible(fdt, off, compat); 3569eb77ceaSKumar Gala } 3579eb77ceaSKumar Gala } 3589eb77ceaSKumar Gala 3599eb77ceaSKumar Gala void do_fixup_by_compat_u32(void *fdt, const char *compat, 3609eb77ceaSKumar Gala const char *prop, u32 val, int create) 3619eb77ceaSKumar Gala { 3628aa5ec6eSKim Phillips fdt32_t tmp = cpu_to_fdt32(val); 3638aa5ec6eSKim Phillips do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); 3649eb77ceaSKumar Gala } 3659eb77ceaSKumar Gala 366739a01edSMasahiro Yamada /* 367739a01edSMasahiro Yamada * fdt_pack_reg - pack address and size array into the "reg"-suitable stream 368739a01edSMasahiro Yamada */ 36941f09bbeSSimon Glass static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size, 37041f09bbeSSimon Glass int n) 371739a01edSMasahiro Yamada { 372739a01edSMasahiro Yamada int i; 373*933cdbb4SSimon Glass int address_len = fdt_address_cells(fdt, 0); 374*933cdbb4SSimon Glass int size_len = fdt_size_cells(fdt, 0); 375739a01edSMasahiro Yamada char *p = buf; 376739a01edSMasahiro Yamada 377739a01edSMasahiro Yamada for (i = 0; i < n; i++) { 378*933cdbb4SSimon Glass if (address_len == 2) 379739a01edSMasahiro Yamada *(fdt64_t *)p = cpu_to_fdt64(address[i]); 380739a01edSMasahiro Yamada else 381739a01edSMasahiro Yamada *(fdt32_t *)p = cpu_to_fdt32(address[i]); 382739a01edSMasahiro Yamada p += address_len; 383739a01edSMasahiro Yamada 384*933cdbb4SSimon Glass if (size_len == 2) 385739a01edSMasahiro Yamada *(fdt64_t *)p = cpu_to_fdt64(size[i]); 386739a01edSMasahiro Yamada else 387739a01edSMasahiro Yamada *(fdt32_t *)p = cpu_to_fdt32(size[i]); 388739a01edSMasahiro Yamada p += size_len; 389739a01edSMasahiro Yamada } 390739a01edSMasahiro Yamada 391739a01edSMasahiro Yamada return p - (char *)buf; 392739a01edSMasahiro Yamada } 393739a01edSMasahiro Yamada 3945e574546SDoug Anderson #ifdef CONFIG_NR_DRAM_BANKS 3955e574546SDoug Anderson #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS 3965e574546SDoug Anderson #else 3978aa5ec6eSKim Phillips #define MEMORY_BANKS_MAX 4 3985e574546SDoug Anderson #endif 399a6bd9e83SJohn Rigby int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) 400a6bd9e83SJohn Rigby { 401a6bd9e83SJohn Rigby int err, nodeoffset; 402739a01edSMasahiro Yamada int len; 4038aa5ec6eSKim Phillips u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ 4043c927281SKumar Gala 4058aa5ec6eSKim Phillips if (banks > MEMORY_BANKS_MAX) { 4068aa5ec6eSKim Phillips printf("%s: num banks %d exceeds hardcoded limit %d." 4078aa5ec6eSKim Phillips " Recompile with higher MEMORY_BANKS_MAX?\n", 4088aa5ec6eSKim Phillips __FUNCTION__, banks, MEMORY_BANKS_MAX); 4098aa5ec6eSKim Phillips return -1; 4108aa5ec6eSKim Phillips } 4118aa5ec6eSKim Phillips 4123c927281SKumar Gala err = fdt_check_header(blob); 4133c927281SKumar Gala if (err < 0) { 4143c927281SKumar Gala printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); 4153c927281SKumar Gala return err; 4163c927281SKumar Gala } 4173c927281SKumar Gala 4188edb2192SMasahiro Yamada /* find or create "/memory" node. */ 4198edb2192SMasahiro Yamada nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory"); 4208edb2192SMasahiro Yamada if (nodeoffset < 0) 4213c927281SKumar Gala return nodeoffset; 4228edb2192SMasahiro Yamada 4233c927281SKumar Gala err = fdt_setprop(blob, nodeoffset, "device_type", "memory", 4243c927281SKumar Gala sizeof("memory")); 4253c927281SKumar Gala if (err < 0) { 4263c927281SKumar Gala printf("WARNING: could not set %s %s.\n", "device_type", 4273c927281SKumar Gala fdt_strerror(err)); 4283c927281SKumar Gala return err; 4293c927281SKumar Gala } 4303c927281SKumar Gala 431739a01edSMasahiro Yamada len = fdt_pack_reg(blob, tmp, start, size, banks); 4323c927281SKumar Gala 4333c927281SKumar Gala err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); 4343c927281SKumar Gala if (err < 0) { 4353c927281SKumar Gala printf("WARNING: could not set %s %s.\n", 4363c927281SKumar Gala "reg", fdt_strerror(err)); 4373c927281SKumar Gala return err; 4383c927281SKumar Gala } 4393c927281SKumar Gala return 0; 4403c927281SKumar Gala } 4413c927281SKumar Gala 442a6bd9e83SJohn Rigby int fdt_fixup_memory(void *blob, u64 start, u64 size) 443a6bd9e83SJohn Rigby { 444a6bd9e83SJohn Rigby return fdt_fixup_memory_banks(blob, &start, &size, 1); 445a6bd9e83SJohn Rigby } 446a6bd9e83SJohn Rigby 447ba37aa03SKumar Gala void fdt_fixup_ethernet(void *fdt) 448ab544633SKumar Gala { 449ba37aa03SKumar Gala int node, i, j; 450ba37aa03SKumar Gala char enet[16], *tmp, *end; 451064d55f8SStephen Warren char mac[16]; 452ab544633SKumar Gala const char *path; 453ba37aa03SKumar Gala unsigned char mac_addr[6]; 454ab544633SKumar Gala 455ab544633SKumar Gala node = fdt_path_offset(fdt, "/aliases"); 456ba37aa03SKumar Gala if (node < 0) 457ba37aa03SKumar Gala return; 458ba37aa03SKumar Gala 459b1f49ab8SDan Murphy if (!getenv("ethaddr")) { 460b1f49ab8SDan Murphy if (getenv("usbethaddr")) { 461b1f49ab8SDan Murphy strcpy(mac, "usbethaddr"); 462b1f49ab8SDan Murphy } else { 463b1f49ab8SDan Murphy debug("No ethernet MAC Address defined\n"); 464b1f49ab8SDan Murphy return; 465b1f49ab8SDan Murphy } 466b1f49ab8SDan Murphy } else { 467064d55f8SStephen Warren strcpy(mac, "ethaddr"); 468b1f49ab8SDan Murphy } 469b1f49ab8SDan Murphy 470b1f49ab8SDan Murphy i = 0; 471ba37aa03SKumar Gala while ((tmp = getenv(mac)) != NULL) { 472ba37aa03SKumar Gala sprintf(enet, "ethernet%d", i); 473ba37aa03SKumar Gala path = fdt_getprop(fdt, node, enet, NULL); 474ba37aa03SKumar Gala if (!path) { 475ba37aa03SKumar Gala debug("No alias for %s\n", enet); 476ba37aa03SKumar Gala sprintf(mac, "eth%daddr", ++i); 477ba37aa03SKumar Gala continue; 478ba37aa03SKumar Gala } 479ba37aa03SKumar Gala 480ba37aa03SKumar Gala for (j = 0; j < 6; j++) { 481ba37aa03SKumar Gala mac_addr[j] = tmp ? simple_strtoul(tmp, &end, 16) : 0; 482ba37aa03SKumar Gala if (tmp) 483ba37aa03SKumar Gala tmp = (*end) ? end+1 : end; 484ba37aa03SKumar Gala } 485ba37aa03SKumar Gala 486ba37aa03SKumar Gala do_fixup_by_path(fdt, path, "mac-address", &mac_addr, 6, 0); 487ab544633SKumar Gala do_fixup_by_path(fdt, path, "local-mac-address", 488ba37aa03SKumar Gala &mac_addr, 6, 1); 489ba37aa03SKumar Gala 490ba37aa03SKumar Gala sprintf(mac, "eth%daddr", ++i); 491ab544633SKumar Gala } 492ab544633SKumar Gala } 49318e69a35SAnton Vorontsov 4943082d234SKumar Gala /* Resize the fdt to its actual size + a bit of padding */ 4955bf58cccSSimon Glass int fdt_shrink_to_minimum(void *blob) 4963082d234SKumar Gala { 4973082d234SKumar Gala int i; 4983082d234SKumar Gala uint64_t addr, size; 4993082d234SKumar Gala int total, ret; 5003082d234SKumar Gala uint actualsize; 5013082d234SKumar Gala 5023082d234SKumar Gala if (!blob) 5033082d234SKumar Gala return 0; 5043082d234SKumar Gala 5053082d234SKumar Gala total = fdt_num_mem_rsv(blob); 5063082d234SKumar Gala for (i = 0; i < total; i++) { 5073082d234SKumar Gala fdt_get_mem_rsv(blob, i, &addr, &size); 50892549358SSimon Glass if (addr == (uintptr_t)blob) { 5093082d234SKumar Gala fdt_del_mem_rsv(blob, i); 5103082d234SKumar Gala break; 5113082d234SKumar Gala } 5123082d234SKumar Gala } 5133082d234SKumar Gala 514f242a088SPeter Korsgaard /* 515f242a088SPeter Korsgaard * Calculate the actual size of the fdt 5163840ebfaSFeng Wang * plus the size needed for 5 fdt_add_mem_rsv, one 5173840ebfaSFeng Wang * for the fdt itself and 4 for a possible initrd 5183840ebfaSFeng Wang * ((initrd-start + initrd-end) * 2 (name & value)) 519f242a088SPeter Korsgaard */ 5203082d234SKumar Gala actualsize = fdt_off_dt_strings(blob) + 5213840ebfaSFeng Wang fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); 5223082d234SKumar Gala 5233082d234SKumar Gala /* Make it so the fdt ends on a page boundary */ 52492549358SSimon Glass actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); 52592549358SSimon Glass actualsize = actualsize - ((uintptr_t)blob & 0xfff); 5263082d234SKumar Gala 5273082d234SKumar Gala /* Change the fdt header to reflect the correct size */ 5283082d234SKumar Gala fdt_set_totalsize(blob, actualsize); 5293082d234SKumar Gala 5303082d234SKumar Gala /* Add the new reservation */ 53192549358SSimon Glass ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize); 5323082d234SKumar Gala if (ret < 0) 5333082d234SKumar Gala return ret; 5343082d234SKumar Gala 5353082d234SKumar Gala return actualsize; 5363082d234SKumar Gala } 5378ab451c4SKumar Gala 5388ab451c4SKumar Gala #ifdef CONFIG_PCI 539cfd700beSKumar Gala #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 5408ab451c4SKumar Gala 5418ab451c4SKumar Gala #define FDT_PCI_PREFETCH (0x40000000) 5428ab451c4SKumar Gala #define FDT_PCI_MEM32 (0x02000000) 5438ab451c4SKumar Gala #define FDT_PCI_IO (0x01000000) 5448ab451c4SKumar Gala #define FDT_PCI_MEM64 (0x03000000) 5458ab451c4SKumar Gala 5468ab451c4SKumar Gala int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { 5478ab451c4SKumar Gala 5488ab451c4SKumar Gala int addrcell, sizecell, len, r; 5498ab451c4SKumar Gala u32 *dma_range; 5508ab451c4SKumar Gala /* sized based on pci addr cells, size-cells, & address-cells */ 5518ab451c4SKumar Gala u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; 5528ab451c4SKumar Gala 5538ab451c4SKumar Gala addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); 5548ab451c4SKumar Gala sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); 5558ab451c4SKumar Gala 5568ab451c4SKumar Gala dma_range = &dma_ranges[0]; 5578ab451c4SKumar Gala for (r = 0; r < hose->region_count; r++) { 5588ab451c4SKumar Gala u64 bus_start, phys_start, size; 5598ab451c4SKumar Gala 560ff4e66e9SKumar Gala /* skip if !PCI_REGION_SYS_MEMORY */ 561ff4e66e9SKumar Gala if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) 5628ab451c4SKumar Gala continue; 5638ab451c4SKumar Gala 5648ab451c4SKumar Gala bus_start = (u64)hose->regions[r].bus_start; 5658ab451c4SKumar Gala phys_start = (u64)hose->regions[r].phys_start; 5668ab451c4SKumar Gala size = (u64)hose->regions[r].size; 5678ab451c4SKumar Gala 5688ab451c4SKumar Gala dma_range[0] = 0; 569cfd700beSKumar Gala if (size >= 0x100000000ull) 5708ab451c4SKumar Gala dma_range[0] |= FDT_PCI_MEM64; 5718ab451c4SKumar Gala else 5728ab451c4SKumar Gala dma_range[0] |= FDT_PCI_MEM32; 5738ab451c4SKumar Gala if (hose->regions[r].flags & PCI_REGION_PREFETCH) 5748ab451c4SKumar Gala dma_range[0] |= FDT_PCI_PREFETCH; 5758ab451c4SKumar Gala #ifdef CONFIG_SYS_PCI_64BIT 5768ab451c4SKumar Gala dma_range[1] = bus_start >> 32; 5778ab451c4SKumar Gala #else 5788ab451c4SKumar Gala dma_range[1] = 0; 5798ab451c4SKumar Gala #endif 5808ab451c4SKumar Gala dma_range[2] = bus_start & 0xffffffff; 5818ab451c4SKumar Gala 5828ab451c4SKumar Gala if (addrcell == 2) { 5838ab451c4SKumar Gala dma_range[3] = phys_start >> 32; 5848ab451c4SKumar Gala dma_range[4] = phys_start & 0xffffffff; 5858ab451c4SKumar Gala } else { 5868ab451c4SKumar Gala dma_range[3] = phys_start & 0xffffffff; 5878ab451c4SKumar Gala } 5888ab451c4SKumar Gala 5898ab451c4SKumar Gala if (sizecell == 2) { 5908ab451c4SKumar Gala dma_range[3 + addrcell + 0] = size >> 32; 5918ab451c4SKumar Gala dma_range[3 + addrcell + 1] = size & 0xffffffff; 5928ab451c4SKumar Gala } else { 5938ab451c4SKumar Gala dma_range[3 + addrcell + 0] = size & 0xffffffff; 5948ab451c4SKumar Gala } 5958ab451c4SKumar Gala 5968ab451c4SKumar Gala dma_range += (3 + addrcell + sizecell); 5978ab451c4SKumar Gala } 5988ab451c4SKumar Gala 5998ab451c4SKumar Gala len = dma_range - &dma_ranges[0]; 6008ab451c4SKumar Gala if (len) 6018ab451c4SKumar Gala fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); 6028ab451c4SKumar Gala 6038ab451c4SKumar Gala return 0; 6048ab451c4SKumar Gala } 6058ab451c4SKumar Gala #endif 60630d45c0dSStefan Roese 60730d45c0dSStefan Roese #ifdef CONFIG_FDT_FIXUP_NOR_FLASH_SIZE 60830d45c0dSStefan Roese /* 6098a805df1SStefan Roese * Provide a weak default function to return the flash bank size. 6108a805df1SStefan Roese * There might be multiple non-identical flash chips connected to one 6118a805df1SStefan Roese * chip-select, so we need to pass an index as well. 6128a805df1SStefan Roese */ 6138a805df1SStefan Roese u32 __flash_get_bank_size(int cs, int idx) 6148a805df1SStefan Roese { 6158a805df1SStefan Roese extern flash_info_t flash_info[]; 6168a805df1SStefan Roese 6178a805df1SStefan Roese /* 6188a805df1SStefan Roese * As default, a simple 1:1 mapping is provided. Boards with 6198a805df1SStefan Roese * a different mapping need to supply a board specific mapping 6208a805df1SStefan Roese * routine. 6218a805df1SStefan Roese */ 6228a805df1SStefan Roese return flash_info[cs].size; 6238a805df1SStefan Roese } 6248a805df1SStefan Roese u32 flash_get_bank_size(int cs, int idx) 6258a805df1SStefan Roese __attribute__((weak, alias("__flash_get_bank_size"))); 6268a805df1SStefan Roese 6278a805df1SStefan Roese /* 62830d45c0dSStefan Roese * This function can be used to update the size in the "reg" property 6298a805df1SStefan Roese * of all NOR FLASH device nodes. This is necessary for boards with 63030d45c0dSStefan Roese * non-fixed NOR FLASH sizes. 63130d45c0dSStefan Roese */ 6328a805df1SStefan Roese int fdt_fixup_nor_flash_size(void *blob) 63330d45c0dSStefan Roese { 63430d45c0dSStefan Roese char compat[][16] = { "cfi-flash", "jedec-flash" }; 63530d45c0dSStefan Roese int off; 63630d45c0dSStefan Roese int len; 63730d45c0dSStefan Roese struct fdt_property *prop; 6382778a014SStefan Roese u32 *reg, *reg2; 63930d45c0dSStefan Roese int i; 64030d45c0dSStefan Roese 64130d45c0dSStefan Roese for (i = 0; i < 2; i++) { 64230d45c0dSStefan Roese off = fdt_node_offset_by_compatible(blob, -1, compat[i]); 64330d45c0dSStefan Roese while (off != -FDT_ERR_NOTFOUND) { 6448a805df1SStefan Roese int idx; 6458a805df1SStefan Roese 64630d45c0dSStefan Roese /* 6478a805df1SStefan Roese * Found one compatible node, so fixup the size 6488a805df1SStefan Roese * int its reg properties 64930d45c0dSStefan Roese */ 65030d45c0dSStefan Roese prop = fdt_get_property_w(blob, off, "reg", &len); 65130d45c0dSStefan Roese if (prop) { 6528a805df1SStefan Roese int tuple_size = 3 * sizeof(reg); 65330d45c0dSStefan Roese 6548a805df1SStefan Roese /* 6558a805df1SStefan Roese * There might be multiple reg-tuples, 6568a805df1SStefan Roese * so loop through them all 6578a805df1SStefan Roese */ 6582778a014SStefan Roese reg = reg2 = (u32 *)&prop->data[0]; 6592778a014SStefan Roese for (idx = 0; idx < (len / tuple_size); idx++) { 6608a805df1SStefan Roese /* 6618a805df1SStefan Roese * Update size in reg property 6628a805df1SStefan Roese */ 6638a805df1SStefan Roese reg[2] = flash_get_bank_size(reg[0], 6648a805df1SStefan Roese idx); 6652778a014SStefan Roese 6662778a014SStefan Roese /* 6672778a014SStefan Roese * Point to next reg tuple 6682778a014SStefan Roese */ 6692778a014SStefan Roese reg += 3; 67030d45c0dSStefan Roese } 6712778a014SStefan Roese 6722778a014SStefan Roese fdt_setprop(blob, off, "reg", reg2, len); 67330d45c0dSStefan Roese } 67430d45c0dSStefan Roese 67530d45c0dSStefan Roese /* Move to next compatible node */ 67630d45c0dSStefan Roese off = fdt_node_offset_by_compatible(blob, off, 67730d45c0dSStefan Roese compat[i]); 67830d45c0dSStefan Roese } 67930d45c0dSStefan Roese } 68030d45c0dSStefan Roese 6818a805df1SStefan Roese return 0; 68230d45c0dSStefan Roese } 68330d45c0dSStefan Roese #endif 6843c950e2eSAnatolij Gustschin 685cb2707afSMatthew McClintock int fdt_increase_size(void *fdt, int add_len) 686cb2707afSMatthew McClintock { 687cb2707afSMatthew McClintock int newlen; 688cb2707afSMatthew McClintock 689cb2707afSMatthew McClintock newlen = fdt_totalsize(fdt) + add_len; 690cb2707afSMatthew McClintock 691cb2707afSMatthew McClintock /* Open in place with a new len */ 692cb2707afSMatthew McClintock return fdt_open_into(fdt, fdt, newlen); 693cb2707afSMatthew McClintock } 694cb2707afSMatthew McClintock 6953c950e2eSAnatolij Gustschin #ifdef CONFIG_FDT_FIXUP_PARTITIONS 6963c950e2eSAnatolij Gustschin #include <jffs2/load_kernel.h> 6973c950e2eSAnatolij Gustschin #include <mtd_node.h> 6983c950e2eSAnatolij Gustschin 6993c950e2eSAnatolij Gustschin struct reg_cell { 7003c950e2eSAnatolij Gustschin unsigned int r0; 7013c950e2eSAnatolij Gustschin unsigned int r1; 7023c950e2eSAnatolij Gustschin }; 7033c950e2eSAnatolij Gustschin 7043c950e2eSAnatolij Gustschin int fdt_del_subnodes(const void *blob, int parent_offset) 7053c950e2eSAnatolij Gustschin { 7063c950e2eSAnatolij Gustschin int off, ndepth; 7073c950e2eSAnatolij Gustschin int ret; 7083c950e2eSAnatolij Gustschin 7093c950e2eSAnatolij Gustschin for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); 7103c950e2eSAnatolij Gustschin (off >= 0) && (ndepth > 0); 7113c950e2eSAnatolij Gustschin off = fdt_next_node(blob, off, &ndepth)) { 7123c950e2eSAnatolij Gustschin if (ndepth == 1) { 7133c950e2eSAnatolij Gustschin debug("delete %s: offset: %x\n", 7143c950e2eSAnatolij Gustschin fdt_get_name(blob, off, 0), off); 7153c950e2eSAnatolij Gustschin ret = fdt_del_node((void *)blob, off); 7163c950e2eSAnatolij Gustschin if (ret < 0) { 7173c950e2eSAnatolij Gustschin printf("Can't delete node: %s\n", 7183c950e2eSAnatolij Gustschin fdt_strerror(ret)); 7193c950e2eSAnatolij Gustschin return ret; 7203c950e2eSAnatolij Gustschin } else { 7213c950e2eSAnatolij Gustschin ndepth = 0; 7223c950e2eSAnatolij Gustschin off = parent_offset; 7233c950e2eSAnatolij Gustschin } 7243c950e2eSAnatolij Gustschin } 7253c950e2eSAnatolij Gustschin } 7263c950e2eSAnatolij Gustschin return 0; 7273c950e2eSAnatolij Gustschin } 7283c950e2eSAnatolij Gustschin 7293c950e2eSAnatolij Gustschin int fdt_del_partitions(void *blob, int parent_offset) 7303c950e2eSAnatolij Gustschin { 7313c950e2eSAnatolij Gustschin const void *prop; 7323c950e2eSAnatolij Gustschin int ndepth = 0; 7333c950e2eSAnatolij Gustschin int off; 7343c950e2eSAnatolij Gustschin int ret; 7353c950e2eSAnatolij Gustschin 7363c950e2eSAnatolij Gustschin off = fdt_next_node(blob, parent_offset, &ndepth); 7373c950e2eSAnatolij Gustschin if (off > 0 && ndepth == 1) { 7383c950e2eSAnatolij Gustschin prop = fdt_getprop(blob, off, "label", NULL); 7393c950e2eSAnatolij Gustschin if (prop == NULL) { 7403c950e2eSAnatolij Gustschin /* 7413c950e2eSAnatolij Gustschin * Could not find label property, nand {}; node? 7423c950e2eSAnatolij Gustschin * Check subnode, delete partitions there if any. 7433c950e2eSAnatolij Gustschin */ 7443c950e2eSAnatolij Gustschin return fdt_del_partitions(blob, off); 7453c950e2eSAnatolij Gustschin } else { 7463c950e2eSAnatolij Gustschin ret = fdt_del_subnodes(blob, parent_offset); 7473c950e2eSAnatolij Gustschin if (ret < 0) { 7483c950e2eSAnatolij Gustschin printf("Can't remove subnodes: %s\n", 7493c950e2eSAnatolij Gustschin fdt_strerror(ret)); 7503c950e2eSAnatolij Gustschin return ret; 7513c950e2eSAnatolij Gustschin } 7523c950e2eSAnatolij Gustschin } 7533c950e2eSAnatolij Gustschin } 7543c950e2eSAnatolij Gustschin return 0; 7553c950e2eSAnatolij Gustschin } 7563c950e2eSAnatolij Gustschin 7573c950e2eSAnatolij Gustschin int fdt_node_set_part_info(void *blob, int parent_offset, 7583c950e2eSAnatolij Gustschin struct mtd_device *dev) 7593c950e2eSAnatolij Gustschin { 7603c950e2eSAnatolij Gustschin struct list_head *pentry; 7613c950e2eSAnatolij Gustschin struct part_info *part; 7623c950e2eSAnatolij Gustschin struct reg_cell cell; 7633c950e2eSAnatolij Gustschin int off, ndepth = 0; 7643c950e2eSAnatolij Gustschin int part_num, ret; 7653c950e2eSAnatolij Gustschin char buf[64]; 7663c950e2eSAnatolij Gustschin 7673c950e2eSAnatolij Gustschin ret = fdt_del_partitions(blob, parent_offset); 7683c950e2eSAnatolij Gustschin if (ret < 0) 7693c950e2eSAnatolij Gustschin return ret; 7703c950e2eSAnatolij Gustschin 7713c950e2eSAnatolij Gustschin /* 7723c950e2eSAnatolij Gustschin * Check if it is nand {}; subnode, adjust 7733c950e2eSAnatolij Gustschin * the offset in this case 7743c950e2eSAnatolij Gustschin */ 7753c950e2eSAnatolij Gustschin off = fdt_next_node(blob, parent_offset, &ndepth); 7763c950e2eSAnatolij Gustschin if (off > 0 && ndepth == 1) 7773c950e2eSAnatolij Gustschin parent_offset = off; 7783c950e2eSAnatolij Gustschin 7793c950e2eSAnatolij Gustschin part_num = 0; 7803c950e2eSAnatolij Gustschin list_for_each_prev(pentry, &dev->parts) { 7813c950e2eSAnatolij Gustschin int newoff; 7823c950e2eSAnatolij Gustschin 7833c950e2eSAnatolij Gustschin part = list_entry(pentry, struct part_info, link); 7843c950e2eSAnatolij Gustschin 78506503f16SScott Wood debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", 7863c950e2eSAnatolij Gustschin part_num, part->name, part->size, 7873c950e2eSAnatolij Gustschin part->offset, part->mask_flags); 7883c950e2eSAnatolij Gustschin 78906503f16SScott Wood sprintf(buf, "partition@%llx", part->offset); 7903c950e2eSAnatolij Gustschin add_sub: 7913c950e2eSAnatolij Gustschin ret = fdt_add_subnode(blob, parent_offset, buf); 7923c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 7933c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 7943c950e2eSAnatolij Gustschin if (!ret) 7953c950e2eSAnatolij Gustschin goto add_sub; 7963c950e2eSAnatolij Gustschin else 7973c950e2eSAnatolij Gustschin goto err_size; 7983c950e2eSAnatolij Gustschin } else if (ret < 0) { 7993c950e2eSAnatolij Gustschin printf("Can't add partition node: %s\n", 8003c950e2eSAnatolij Gustschin fdt_strerror(ret)); 8013c950e2eSAnatolij Gustschin return ret; 8023c950e2eSAnatolij Gustschin } 8033c950e2eSAnatolij Gustschin newoff = ret; 8043c950e2eSAnatolij Gustschin 8053c950e2eSAnatolij Gustschin /* Check MTD_WRITEABLE_CMD flag */ 8063c950e2eSAnatolij Gustschin if (part->mask_flags & 1) { 8073c950e2eSAnatolij Gustschin add_ro: 8083c950e2eSAnatolij Gustschin ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); 8093c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 8103c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 8113c950e2eSAnatolij Gustschin if (!ret) 8123c950e2eSAnatolij Gustschin goto add_ro; 8133c950e2eSAnatolij Gustschin else 8143c950e2eSAnatolij Gustschin goto err_size; 8153c950e2eSAnatolij Gustschin } else if (ret < 0) 8163c950e2eSAnatolij Gustschin goto err_prop; 8173c950e2eSAnatolij Gustschin } 8183c950e2eSAnatolij Gustschin 8193c950e2eSAnatolij Gustschin cell.r0 = cpu_to_fdt32(part->offset); 8203c950e2eSAnatolij Gustschin cell.r1 = cpu_to_fdt32(part->size); 8213c950e2eSAnatolij Gustschin add_reg: 8223c950e2eSAnatolij Gustschin ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); 8233c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 8243c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 8253c950e2eSAnatolij Gustschin if (!ret) 8263c950e2eSAnatolij Gustschin goto add_reg; 8273c950e2eSAnatolij Gustschin else 8283c950e2eSAnatolij Gustschin goto err_size; 8293c950e2eSAnatolij Gustschin } else if (ret < 0) 8303c950e2eSAnatolij Gustschin goto err_prop; 8313c950e2eSAnatolij Gustschin 8323c950e2eSAnatolij Gustschin add_label: 8333c950e2eSAnatolij Gustschin ret = fdt_setprop_string(blob, newoff, "label", part->name); 8343c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 8353c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 8363c950e2eSAnatolij Gustschin if (!ret) 8373c950e2eSAnatolij Gustschin goto add_label; 8383c950e2eSAnatolij Gustschin else 8393c950e2eSAnatolij Gustschin goto err_size; 8403c950e2eSAnatolij Gustschin } else if (ret < 0) 8413c950e2eSAnatolij Gustschin goto err_prop; 8423c950e2eSAnatolij Gustschin 8433c950e2eSAnatolij Gustschin part_num++; 8443c950e2eSAnatolij Gustschin } 8453c950e2eSAnatolij Gustschin return 0; 8463c950e2eSAnatolij Gustschin err_size: 8473c950e2eSAnatolij Gustschin printf("Can't increase blob size: %s\n", fdt_strerror(ret)); 8483c950e2eSAnatolij Gustschin return ret; 8493c950e2eSAnatolij Gustschin err_prop: 8503c950e2eSAnatolij Gustschin printf("Can't add property: %s\n", fdt_strerror(ret)); 8513c950e2eSAnatolij Gustschin return ret; 8523c950e2eSAnatolij Gustschin } 8533c950e2eSAnatolij Gustschin 8543c950e2eSAnatolij Gustschin /* 8553c950e2eSAnatolij Gustschin * Update partitions in nor/nand nodes using info from 8563c950e2eSAnatolij Gustschin * mtdparts environment variable. The nodes to update are 8573c950e2eSAnatolij Gustschin * specified by node_info structure which contains mtd device 8583c950e2eSAnatolij Gustschin * type and compatible string: E. g. the board code in 8593c950e2eSAnatolij Gustschin * ft_board_setup() could use: 8603c950e2eSAnatolij Gustschin * 8613c950e2eSAnatolij Gustschin * struct node_info nodes[] = { 8623c950e2eSAnatolij Gustschin * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, 8633c950e2eSAnatolij Gustschin * { "cfi-flash", MTD_DEV_TYPE_NOR, }, 8643c950e2eSAnatolij Gustschin * }; 8653c950e2eSAnatolij Gustschin * 8663c950e2eSAnatolij Gustschin * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); 8673c950e2eSAnatolij Gustschin */ 8683c950e2eSAnatolij Gustschin void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) 8693c950e2eSAnatolij Gustschin { 8703c950e2eSAnatolij Gustschin struct node_info *ni = node_info; 8713c950e2eSAnatolij Gustschin struct mtd_device *dev; 8723c950e2eSAnatolij Gustschin char *parts; 8733c950e2eSAnatolij Gustschin int i, idx; 8743c950e2eSAnatolij Gustschin int noff; 8753c950e2eSAnatolij Gustschin 8763c950e2eSAnatolij Gustschin parts = getenv("mtdparts"); 8773c950e2eSAnatolij Gustschin if (!parts) 8783c950e2eSAnatolij Gustschin return; 8793c950e2eSAnatolij Gustschin 8803c950e2eSAnatolij Gustschin if (mtdparts_init() != 0) 8813c950e2eSAnatolij Gustschin return; 8823c950e2eSAnatolij Gustschin 8833c950e2eSAnatolij Gustschin for (i = 0; i < node_info_size; i++) { 8843c950e2eSAnatolij Gustschin idx = 0; 8853c950e2eSAnatolij Gustschin noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); 8863c950e2eSAnatolij Gustschin while (noff != -FDT_ERR_NOTFOUND) { 8873c950e2eSAnatolij Gustschin debug("%s: %s, mtd dev type %d\n", 8883c950e2eSAnatolij Gustschin fdt_get_name(blob, noff, 0), 8893c950e2eSAnatolij Gustschin ni[i].compat, ni[i].type); 8903c950e2eSAnatolij Gustschin dev = device_find(ni[i].type, idx++); 8913c950e2eSAnatolij Gustschin if (dev) { 8923c950e2eSAnatolij Gustschin if (fdt_node_set_part_info(blob, noff, dev)) 8933c950e2eSAnatolij Gustschin return; /* return on error */ 8943c950e2eSAnatolij Gustschin } 8953c950e2eSAnatolij Gustschin 8963c950e2eSAnatolij Gustschin /* Jump to next flash node */ 8973c950e2eSAnatolij Gustschin noff = fdt_node_offset_by_compatible(blob, noff, 8983c950e2eSAnatolij Gustschin ni[i].compat); 8993c950e2eSAnatolij Gustschin } 9003c950e2eSAnatolij Gustschin } 9013c950e2eSAnatolij Gustschin } 9023c950e2eSAnatolij Gustschin #endif 90349b97d9cSKumar Gala 90449b97d9cSKumar Gala void fdt_del_node_and_alias(void *blob, const char *alias) 90549b97d9cSKumar Gala { 90649b97d9cSKumar Gala int off = fdt_path_offset(blob, alias); 90749b97d9cSKumar Gala 90849b97d9cSKumar Gala if (off < 0) 90949b97d9cSKumar Gala return; 91049b97d9cSKumar Gala 91149b97d9cSKumar Gala fdt_del_node(blob, off); 91249b97d9cSKumar Gala 91349b97d9cSKumar Gala off = fdt_path_offset(blob, "/aliases"); 91449b97d9cSKumar Gala fdt_delprop(blob, off, alias); 91549b97d9cSKumar Gala } 916a0342c08SKumar Gala 917a0342c08SKumar Gala #define PRu64 "%llx" 918a0342c08SKumar Gala 919a0342c08SKumar Gala /* Max address size we deal with */ 920a0342c08SKumar Gala #define OF_MAX_ADDR_CELLS 4 921a0342c08SKumar Gala #define OF_BAD_ADDR ((u64)-1) 922a0342c08SKumar Gala #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ 923a0342c08SKumar Gala (ns) > 0) 924a0342c08SKumar Gala 925a0342c08SKumar Gala /* Debug utility */ 926a0342c08SKumar Gala #ifdef DEBUG 9278aa5ec6eSKim Phillips static void of_dump_addr(const char *s, const fdt32_t *addr, int na) 928a0342c08SKumar Gala { 929a0342c08SKumar Gala printf("%s", s); 930a0342c08SKumar Gala while(na--) 931a0342c08SKumar Gala printf(" %08x", *(addr++)); 932a0342c08SKumar Gala printf("\n"); 933a0342c08SKumar Gala } 934a0342c08SKumar Gala #else 9358aa5ec6eSKim Phillips static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } 936a0342c08SKumar Gala #endif 937a0342c08SKumar Gala 938a0342c08SKumar Gala /* Callbacks for bus specific translators */ 939a0342c08SKumar Gala struct of_bus { 940a0342c08SKumar Gala const char *name; 941a0342c08SKumar Gala const char *addresses; 9426395f318SScott Wood void (*count_cells)(void *blob, int parentoffset, 943a0342c08SKumar Gala int *addrc, int *sizec); 9448aa5ec6eSKim Phillips u64 (*map)(fdt32_t *addr, const fdt32_t *range, 945a0342c08SKumar Gala int na, int ns, int pna); 9468aa5ec6eSKim Phillips int (*translate)(fdt32_t *addr, u64 offset, int na); 947a0342c08SKumar Gala }; 948a0342c08SKumar Gala 949a0342c08SKumar Gala /* Default translator (generic bus) */ 950f43b4356SArnab Basu void of_bus_default_count_cells(void *blob, int parentoffset, 951a0342c08SKumar Gala int *addrc, int *sizec) 952a0342c08SKumar Gala { 9538aa5ec6eSKim Phillips const fdt32_t *prop; 9546395f318SScott Wood 955*933cdbb4SSimon Glass if (addrc) 956*933cdbb4SSimon Glass *addrc = fdt_address_cells(blob, parentoffset); 9576395f318SScott Wood 9586395f318SScott Wood if (sizec) { 9596395f318SScott Wood prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); 9606395f318SScott Wood if (prop) 9618aa5ec6eSKim Phillips *sizec = be32_to_cpup(prop); 9626395f318SScott Wood else 9636395f318SScott Wood *sizec = 1; 9646395f318SScott Wood } 965a0342c08SKumar Gala } 966a0342c08SKumar Gala 9678aa5ec6eSKim Phillips static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, 968a0342c08SKumar Gala int na, int ns, int pna) 969a0342c08SKumar Gala { 970a0342c08SKumar Gala u64 cp, s, da; 971a0342c08SKumar Gala 972a0342c08SKumar Gala cp = of_read_number(range, na); 973a0342c08SKumar Gala s = of_read_number(range + na + pna, ns); 974a0342c08SKumar Gala da = of_read_number(addr, na); 975a0342c08SKumar Gala 976a0342c08SKumar Gala debug("OF: default map, cp="PRu64", s="PRu64", da="PRu64"\n", 977a0342c08SKumar Gala cp, s, da); 978a0342c08SKumar Gala 979a0342c08SKumar Gala if (da < cp || da >= (cp + s)) 980a0342c08SKumar Gala return OF_BAD_ADDR; 981a0342c08SKumar Gala return da - cp; 982a0342c08SKumar Gala } 983a0342c08SKumar Gala 9848aa5ec6eSKim Phillips static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) 985a0342c08SKumar Gala { 986a0342c08SKumar Gala u64 a = of_read_number(addr, na); 987a0342c08SKumar Gala memset(addr, 0, na * 4); 988a0342c08SKumar Gala a += offset; 989a0342c08SKumar Gala if (na > 1) 9908aa5ec6eSKim Phillips addr[na - 2] = cpu_to_fdt32(a >> 32); 9918aa5ec6eSKim Phillips addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); 992a0342c08SKumar Gala 993a0342c08SKumar Gala return 0; 994a0342c08SKumar Gala } 995a0342c08SKumar Gala 996a0342c08SKumar Gala /* Array of bus specific translators */ 997a0342c08SKumar Gala static struct of_bus of_busses[] = { 998a0342c08SKumar Gala /* Default */ 999a0342c08SKumar Gala { 1000a0342c08SKumar Gala .name = "default", 1001a0342c08SKumar Gala .addresses = "reg", 1002a0342c08SKumar Gala .count_cells = of_bus_default_count_cells, 1003a0342c08SKumar Gala .map = of_bus_default_map, 1004a0342c08SKumar Gala .translate = of_bus_default_translate, 1005a0342c08SKumar Gala }, 1006a0342c08SKumar Gala }; 1007a0342c08SKumar Gala 1008a0342c08SKumar Gala static int of_translate_one(void * blob, int parent, struct of_bus *bus, 10098aa5ec6eSKim Phillips struct of_bus *pbus, fdt32_t *addr, 1010a0342c08SKumar Gala int na, int ns, int pna, const char *rprop) 1011a0342c08SKumar Gala { 10128aa5ec6eSKim Phillips const fdt32_t *ranges; 1013a0342c08SKumar Gala int rlen; 1014a0342c08SKumar Gala int rone; 1015a0342c08SKumar Gala u64 offset = OF_BAD_ADDR; 1016a0342c08SKumar Gala 1017a0342c08SKumar Gala /* Normally, an absence of a "ranges" property means we are 1018a0342c08SKumar Gala * crossing a non-translatable boundary, and thus the addresses 1019a0342c08SKumar Gala * below the current not cannot be converted to CPU physical ones. 1020a0342c08SKumar Gala * Unfortunately, while this is very clear in the spec, it's not 1021a0342c08SKumar Gala * what Apple understood, and they do have things like /uni-n or 1022a0342c08SKumar Gala * /ht nodes with no "ranges" property and a lot of perfectly 1023a0342c08SKumar Gala * useable mapped devices below them. Thus we treat the absence of 1024a0342c08SKumar Gala * "ranges" as equivalent to an empty "ranges" property which means 1025a0342c08SKumar Gala * a 1:1 translation at that level. It's up to the caller not to try 1026a0342c08SKumar Gala * to translate addresses that aren't supposed to be translated in 1027a0342c08SKumar Gala * the first place. --BenH. 1028a0342c08SKumar Gala */ 10298aa5ec6eSKim Phillips ranges = fdt_getprop(blob, parent, rprop, &rlen); 1030a0342c08SKumar Gala if (ranges == NULL || rlen == 0) { 1031a0342c08SKumar Gala offset = of_read_number(addr, na); 1032a0342c08SKumar Gala memset(addr, 0, pna * 4); 1033a0342c08SKumar Gala debug("OF: no ranges, 1:1 translation\n"); 1034a0342c08SKumar Gala goto finish; 1035a0342c08SKumar Gala } 1036a0342c08SKumar Gala 1037a0342c08SKumar Gala debug("OF: walking ranges...\n"); 1038a0342c08SKumar Gala 1039a0342c08SKumar Gala /* Now walk through the ranges */ 1040a0342c08SKumar Gala rlen /= 4; 1041a0342c08SKumar Gala rone = na + pna + ns; 1042a0342c08SKumar Gala for (; rlen >= rone; rlen -= rone, ranges += rone) { 1043a0342c08SKumar Gala offset = bus->map(addr, ranges, na, ns, pna); 1044a0342c08SKumar Gala if (offset != OF_BAD_ADDR) 1045a0342c08SKumar Gala break; 1046a0342c08SKumar Gala } 1047a0342c08SKumar Gala if (offset == OF_BAD_ADDR) { 1048a0342c08SKumar Gala debug("OF: not found !\n"); 1049a0342c08SKumar Gala return 1; 1050a0342c08SKumar Gala } 1051a0342c08SKumar Gala memcpy(addr, ranges + na, 4 * pna); 1052a0342c08SKumar Gala 1053a0342c08SKumar Gala finish: 1054a0342c08SKumar Gala of_dump_addr("OF: parent translation for:", addr, pna); 1055a0342c08SKumar Gala debug("OF: with offset: "PRu64"\n", offset); 1056a0342c08SKumar Gala 1057a0342c08SKumar Gala /* Translate it into parent bus space */ 1058a0342c08SKumar Gala return pbus->translate(addr, offset, pna); 1059a0342c08SKumar Gala } 1060a0342c08SKumar Gala 1061a0342c08SKumar Gala /* 1062a0342c08SKumar Gala * Translate an address from the device-tree into a CPU physical address, 1063a0342c08SKumar Gala * this walks up the tree and applies the various bus mappings on the 1064a0342c08SKumar Gala * way. 1065a0342c08SKumar Gala * 1066a0342c08SKumar Gala * Note: We consider that crossing any level with #size-cells == 0 to mean 1067a0342c08SKumar Gala * that translation is impossible (that is we are not dealing with a value 1068a0342c08SKumar Gala * that can be mapped to a cpu physical address). This is not really specified 1069a0342c08SKumar Gala * that way, but this is traditionally the way IBM at least do things 1070a0342c08SKumar Gala */ 10718aa5ec6eSKim Phillips static u64 __of_translate_address(void *blob, int node_offset, const fdt32_t *in_addr, 1072a0342c08SKumar Gala const char *rprop) 1073a0342c08SKumar Gala { 1074a0342c08SKumar Gala int parent; 1075a0342c08SKumar Gala struct of_bus *bus, *pbus; 10768aa5ec6eSKim Phillips fdt32_t addr[OF_MAX_ADDR_CELLS]; 1077a0342c08SKumar Gala int na, ns, pna, pns; 1078a0342c08SKumar Gala u64 result = OF_BAD_ADDR; 1079a0342c08SKumar Gala 1080a0342c08SKumar Gala debug("OF: ** translation for device %s **\n", 1081a0342c08SKumar Gala fdt_get_name(blob, node_offset, NULL)); 1082a0342c08SKumar Gala 1083a0342c08SKumar Gala /* Get parent & match bus type */ 1084a0342c08SKumar Gala parent = fdt_parent_offset(blob, node_offset); 1085a0342c08SKumar Gala if (parent < 0) 1086a0342c08SKumar Gala goto bail; 1087a0342c08SKumar Gala bus = &of_busses[0]; 1088a0342c08SKumar Gala 1089a0342c08SKumar Gala /* Cound address cells & copy address locally */ 10906395f318SScott Wood bus->count_cells(blob, parent, &na, &ns); 1091a0342c08SKumar Gala if (!OF_CHECK_COUNTS(na, ns)) { 1092a0342c08SKumar Gala printf("%s: Bad cell count for %s\n", __FUNCTION__, 1093a0342c08SKumar Gala fdt_get_name(blob, node_offset, NULL)); 1094a0342c08SKumar Gala goto bail; 1095a0342c08SKumar Gala } 1096a0342c08SKumar Gala memcpy(addr, in_addr, na * 4); 1097a0342c08SKumar Gala 1098a0342c08SKumar Gala debug("OF: bus is %s (na=%d, ns=%d) on %s\n", 1099a0342c08SKumar Gala bus->name, na, ns, fdt_get_name(blob, parent, NULL)); 1100a0342c08SKumar Gala of_dump_addr("OF: translating address:", addr, na); 1101a0342c08SKumar Gala 1102a0342c08SKumar Gala /* Translate */ 1103a0342c08SKumar Gala for (;;) { 1104a0342c08SKumar Gala /* Switch to parent bus */ 1105a0342c08SKumar Gala node_offset = parent; 1106a0342c08SKumar Gala parent = fdt_parent_offset(blob, node_offset); 1107a0342c08SKumar Gala 1108a0342c08SKumar Gala /* If root, we have finished */ 1109a0342c08SKumar Gala if (parent < 0) { 1110a0342c08SKumar Gala debug("OF: reached root node\n"); 1111a0342c08SKumar Gala result = of_read_number(addr, na); 1112a0342c08SKumar Gala break; 1113a0342c08SKumar Gala } 1114a0342c08SKumar Gala 1115a0342c08SKumar Gala /* Get new parent bus and counts */ 1116a0342c08SKumar Gala pbus = &of_busses[0]; 11176395f318SScott Wood pbus->count_cells(blob, parent, &pna, &pns); 1118a0342c08SKumar Gala if (!OF_CHECK_COUNTS(pna, pns)) { 1119a0342c08SKumar Gala printf("%s: Bad cell count for %s\n", __FUNCTION__, 1120a0342c08SKumar Gala fdt_get_name(blob, node_offset, NULL)); 1121a0342c08SKumar Gala break; 1122a0342c08SKumar Gala } 1123a0342c08SKumar Gala 1124a0342c08SKumar Gala debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", 1125a0342c08SKumar Gala pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); 1126a0342c08SKumar Gala 1127a0342c08SKumar Gala /* Apply bus translation */ 1128a0342c08SKumar Gala if (of_translate_one(blob, node_offset, bus, pbus, 1129a0342c08SKumar Gala addr, na, ns, pna, rprop)) 1130a0342c08SKumar Gala break; 1131a0342c08SKumar Gala 1132a0342c08SKumar Gala /* Complete the move up one level */ 1133a0342c08SKumar Gala na = pna; 1134a0342c08SKumar Gala ns = pns; 1135a0342c08SKumar Gala bus = pbus; 1136a0342c08SKumar Gala 1137a0342c08SKumar Gala of_dump_addr("OF: one level translation:", addr, na); 1138a0342c08SKumar Gala } 1139a0342c08SKumar Gala bail: 1140a0342c08SKumar Gala 1141a0342c08SKumar Gala return result; 1142a0342c08SKumar Gala } 1143a0342c08SKumar Gala 11448aa5ec6eSKim Phillips u64 fdt_translate_address(void *blob, int node_offset, const fdt32_t *in_addr) 1145a0342c08SKumar Gala { 1146a0342c08SKumar Gala return __of_translate_address(blob, node_offset, in_addr, "ranges"); 1147a0342c08SKumar Gala } 114875e73afdSKumar Gala 114975e73afdSKumar Gala /** 115075e73afdSKumar Gala * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and 115175e73afdSKumar Gala * who's reg property matches a physical cpu address 115275e73afdSKumar Gala * 115375e73afdSKumar Gala * @blob: ptr to device tree 115475e73afdSKumar Gala * @compat: compatiable string to match 115575e73afdSKumar Gala * @compat_off: property name 115675e73afdSKumar Gala * 115775e73afdSKumar Gala */ 115875e73afdSKumar Gala int fdt_node_offset_by_compat_reg(void *blob, const char *compat, 115975e73afdSKumar Gala phys_addr_t compat_off) 116075e73afdSKumar Gala { 116175e73afdSKumar Gala int len, off = fdt_node_offset_by_compatible(blob, -1, compat); 116275e73afdSKumar Gala while (off != -FDT_ERR_NOTFOUND) { 11638aa5ec6eSKim Phillips const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); 116475e73afdSKumar Gala if (reg) { 116575e73afdSKumar Gala if (compat_off == fdt_translate_address(blob, off, reg)) 116675e73afdSKumar Gala return off; 116775e73afdSKumar Gala } 116875e73afdSKumar Gala off = fdt_node_offset_by_compatible(blob, off, compat); 116975e73afdSKumar Gala } 117075e73afdSKumar Gala 117175e73afdSKumar Gala return -FDT_ERR_NOTFOUND; 117275e73afdSKumar Gala } 117375e73afdSKumar Gala 1174b4b847e9SKumar Gala /** 1175b4b847e9SKumar Gala * fdt_alloc_phandle: Return next free phandle value 1176b4b847e9SKumar Gala * 1177b4b847e9SKumar Gala * @blob: ptr to device tree 1178b4b847e9SKumar Gala */ 1179b4b847e9SKumar Gala int fdt_alloc_phandle(void *blob) 1180b4b847e9SKumar Gala { 118150bf17bdSTimur Tabi int offset, phandle = 0; 118275e73afdSKumar Gala 1183b4b847e9SKumar Gala for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; 1184b4b847e9SKumar Gala offset = fdt_next_node(blob, offset, NULL)) { 118550bf17bdSTimur Tabi phandle = max(phandle, fdt_get_phandle(blob, offset)); 1186b4b847e9SKumar Gala } 1187b4b847e9SKumar Gala 1188b4b847e9SKumar Gala return phandle + 1; 1189b4b847e9SKumar Gala } 1190beca5a5fSAnatolij Gustschin 1191a8d2a75dSGerald Van Baren /* 1192f117c0f0SKumar Gala * fdt_set_phandle: Create a phandle property for the given node 1193a8d2a75dSGerald Van Baren * 1194a8d2a75dSGerald Van Baren * @fdt: ptr to device tree 1195a8d2a75dSGerald Van Baren * @nodeoffset: node to update 1196a8d2a75dSGerald Van Baren * @phandle: phandle value to set (must be unique) 1197a8d2a75dSGerald Van Baren */ 1198f117c0f0SKumar Gala int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) 1199a8d2a75dSGerald Van Baren { 1200a8d2a75dSGerald Van Baren int ret; 1201a8d2a75dSGerald Van Baren 1202a8d2a75dSGerald Van Baren #ifdef DEBUG 1203a8d2a75dSGerald Van Baren int off = fdt_node_offset_by_phandle(fdt, phandle); 1204a8d2a75dSGerald Van Baren 1205a8d2a75dSGerald Van Baren if ((off >= 0) && (off != nodeoffset)) { 1206a8d2a75dSGerald Van Baren char buf[64]; 1207a8d2a75dSGerald Van Baren 1208a8d2a75dSGerald Van Baren fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); 1209a8d2a75dSGerald Van Baren printf("Trying to update node %s with phandle %u ", 1210a8d2a75dSGerald Van Baren buf, phandle); 1211a8d2a75dSGerald Van Baren 1212a8d2a75dSGerald Van Baren fdt_get_path(fdt, off, buf, sizeof(buf)); 1213a8d2a75dSGerald Van Baren printf("that already exists in node %s.\n", buf); 1214a8d2a75dSGerald Van Baren return -FDT_ERR_BADPHANDLE; 1215a8d2a75dSGerald Van Baren } 1216a8d2a75dSGerald Van Baren #endif 1217a8d2a75dSGerald Van Baren 1218a8d2a75dSGerald Van Baren ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); 1219a8d2a75dSGerald Van Baren if (ret < 0) 1220a8d2a75dSGerald Van Baren return ret; 1221a8d2a75dSGerald Van Baren 1222a8d2a75dSGerald Van Baren /* 1223a8d2a75dSGerald Van Baren * For now, also set the deprecated "linux,phandle" property, so that we 1224a8d2a75dSGerald Van Baren * don't break older kernels. 1225a8d2a75dSGerald Van Baren */ 1226a8d2a75dSGerald Van Baren ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); 1227a8d2a75dSGerald Van Baren 1228a8d2a75dSGerald Van Baren return ret; 1229a8d2a75dSGerald Van Baren } 1230a8d2a75dSGerald Van Baren 123110aeabd1SKumar Gala /* 123210aeabd1SKumar Gala * fdt_create_phandle: Create a phandle property for the given node 123310aeabd1SKumar Gala * 123410aeabd1SKumar Gala * @fdt: ptr to device tree 123510aeabd1SKumar Gala * @nodeoffset: node to update 123610aeabd1SKumar Gala */ 12373c927cccSTimur Tabi unsigned int fdt_create_phandle(void *fdt, int nodeoffset) 123810aeabd1SKumar Gala { 123910aeabd1SKumar Gala /* see if there is a phandle already */ 124010aeabd1SKumar Gala int phandle = fdt_get_phandle(fdt, nodeoffset); 124110aeabd1SKumar Gala 124210aeabd1SKumar Gala /* if we got 0, means no phandle so create one */ 124310aeabd1SKumar Gala if (phandle == 0) { 12443c927cccSTimur Tabi int ret; 12453c927cccSTimur Tabi 124610aeabd1SKumar Gala phandle = fdt_alloc_phandle(fdt); 12473c927cccSTimur Tabi ret = fdt_set_phandle(fdt, nodeoffset, phandle); 12483c927cccSTimur Tabi if (ret < 0) { 12493c927cccSTimur Tabi printf("Can't set phandle %u: %s\n", phandle, 12503c927cccSTimur Tabi fdt_strerror(ret)); 12513c927cccSTimur Tabi return 0; 12523c927cccSTimur Tabi } 125310aeabd1SKumar Gala } 125410aeabd1SKumar Gala 125510aeabd1SKumar Gala return phandle; 125610aeabd1SKumar Gala } 125710aeabd1SKumar Gala 12582a523f52SShengzhou Liu /* 12592a523f52SShengzhou Liu * fdt_set_node_status: Set status for the given node 12602a523f52SShengzhou Liu * 12612a523f52SShengzhou Liu * @fdt: ptr to device tree 12622a523f52SShengzhou Liu * @nodeoffset: node to update 12632a523f52SShengzhou Liu * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, 12642a523f52SShengzhou Liu * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE 12652a523f52SShengzhou Liu * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE 12662a523f52SShengzhou Liu */ 12672a523f52SShengzhou Liu int fdt_set_node_status(void *fdt, int nodeoffset, 12682a523f52SShengzhou Liu enum fdt_status status, unsigned int error_code) 12692a523f52SShengzhou Liu { 12702a523f52SShengzhou Liu char buf[16]; 12712a523f52SShengzhou Liu int ret = 0; 12722a523f52SShengzhou Liu 12732a523f52SShengzhou Liu if (nodeoffset < 0) 12742a523f52SShengzhou Liu return nodeoffset; 12752a523f52SShengzhou Liu 12762a523f52SShengzhou Liu switch (status) { 12772a523f52SShengzhou Liu case FDT_STATUS_OKAY: 12782a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); 12792a523f52SShengzhou Liu break; 12802a523f52SShengzhou Liu case FDT_STATUS_DISABLED: 12812a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); 12822a523f52SShengzhou Liu break; 12832a523f52SShengzhou Liu case FDT_STATUS_FAIL: 12842a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); 12852a523f52SShengzhou Liu break; 12862a523f52SShengzhou Liu case FDT_STATUS_FAIL_ERROR_CODE: 12872a523f52SShengzhou Liu sprintf(buf, "fail-%d", error_code); 12882a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); 12892a523f52SShengzhou Liu break; 12902a523f52SShengzhou Liu default: 12912a523f52SShengzhou Liu printf("Invalid fdt status: %x\n", status); 12922a523f52SShengzhou Liu ret = -1; 12932a523f52SShengzhou Liu break; 12942a523f52SShengzhou Liu } 12952a523f52SShengzhou Liu 12962a523f52SShengzhou Liu return ret; 12972a523f52SShengzhou Liu } 12982a523f52SShengzhou Liu 12992a523f52SShengzhou Liu /* 13002a523f52SShengzhou Liu * fdt_set_status_by_alias: Set status for the given node given an alias 13012a523f52SShengzhou Liu * 13022a523f52SShengzhou Liu * @fdt: ptr to device tree 13032a523f52SShengzhou Liu * @alias: alias of node to update 13042a523f52SShengzhou Liu * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, 13052a523f52SShengzhou Liu * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE 13062a523f52SShengzhou Liu * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE 13072a523f52SShengzhou Liu */ 13082a523f52SShengzhou Liu int fdt_set_status_by_alias(void *fdt, const char* alias, 13092a523f52SShengzhou Liu enum fdt_status status, unsigned int error_code) 13102a523f52SShengzhou Liu { 13112a523f52SShengzhou Liu int offset = fdt_path_offset(fdt, alias); 13122a523f52SShengzhou Liu 13132a523f52SShengzhou Liu return fdt_set_node_status(fdt, offset, status, error_code); 13142a523f52SShengzhou Liu } 13152a523f52SShengzhou Liu 1316096eb3f5STom Wai-Hong Tam #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) 1317beca5a5fSAnatolij Gustschin int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) 1318beca5a5fSAnatolij Gustschin { 1319beca5a5fSAnatolij Gustschin int noff; 1320beca5a5fSAnatolij Gustschin int ret; 1321beca5a5fSAnatolij Gustschin 1322beca5a5fSAnatolij Gustschin noff = fdt_node_offset_by_compatible(blob, -1, compat); 1323beca5a5fSAnatolij Gustschin if (noff != -FDT_ERR_NOTFOUND) { 1324beca5a5fSAnatolij Gustschin debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); 1325beca5a5fSAnatolij Gustschin add_edid: 1326beca5a5fSAnatolij Gustschin ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); 1327beca5a5fSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 1328beca5a5fSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 1329beca5a5fSAnatolij Gustschin if (!ret) 1330beca5a5fSAnatolij Gustschin goto add_edid; 1331beca5a5fSAnatolij Gustschin else 1332beca5a5fSAnatolij Gustschin goto err_size; 1333beca5a5fSAnatolij Gustschin } else if (ret < 0) { 1334beca5a5fSAnatolij Gustschin printf("Can't add property: %s\n", fdt_strerror(ret)); 1335beca5a5fSAnatolij Gustschin return ret; 1336beca5a5fSAnatolij Gustschin } 1337beca5a5fSAnatolij Gustschin } 1338beca5a5fSAnatolij Gustschin return 0; 1339beca5a5fSAnatolij Gustschin err_size: 1340beca5a5fSAnatolij Gustschin printf("Can't increase blob size: %s\n", fdt_strerror(ret)); 1341beca5a5fSAnatolij Gustschin return ret; 1342beca5a5fSAnatolij Gustschin } 1343beca5a5fSAnatolij Gustschin #endif 1344bb682001STimur Tabi 1345bb682001STimur Tabi /* 1346bb682001STimur Tabi * Verify the physical address of device tree node for a given alias 1347bb682001STimur Tabi * 1348bb682001STimur Tabi * This function locates the device tree node of a given alias, and then 1349bb682001STimur Tabi * verifies that the physical address of that device matches the given 1350bb682001STimur Tabi * parameter. It displays a message if there is a mismatch. 1351bb682001STimur Tabi * 1352bb682001STimur Tabi * Returns 1 on success, 0 on failure 1353bb682001STimur Tabi */ 1354bb682001STimur Tabi int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) 1355bb682001STimur Tabi { 1356bb682001STimur Tabi const char *path; 13578aa5ec6eSKim Phillips const fdt32_t *reg; 1358bb682001STimur Tabi int node, len; 1359bb682001STimur Tabi u64 dt_addr; 1360bb682001STimur Tabi 1361bb682001STimur Tabi path = fdt_getprop(fdt, anode, alias, NULL); 1362bb682001STimur Tabi if (!path) { 1363bb682001STimur Tabi /* If there's no such alias, then it's not a failure */ 1364bb682001STimur Tabi return 1; 1365bb682001STimur Tabi } 1366bb682001STimur Tabi 1367bb682001STimur Tabi node = fdt_path_offset(fdt, path); 1368bb682001STimur Tabi if (node < 0) { 1369bb682001STimur Tabi printf("Warning: device tree alias '%s' points to invalid " 1370bb682001STimur Tabi "node %s.\n", alias, path); 1371bb682001STimur Tabi return 0; 1372bb682001STimur Tabi } 1373bb682001STimur Tabi 1374bb682001STimur Tabi reg = fdt_getprop(fdt, node, "reg", &len); 1375bb682001STimur Tabi if (!reg) { 1376bb682001STimur Tabi printf("Warning: device tree node '%s' has no address.\n", 1377bb682001STimur Tabi path); 1378bb682001STimur Tabi return 0; 1379bb682001STimur Tabi } 1380bb682001STimur Tabi 1381bb682001STimur Tabi dt_addr = fdt_translate_address(fdt, node, reg); 1382bb682001STimur Tabi if (addr != dt_addr) { 1383bb682001STimur Tabi printf("Warning: U-Boot configured device %s at address %llx,\n" 1384bb682001STimur Tabi " but the device tree has it address %llx.\n", 1385bb682001STimur Tabi alias, addr, dt_addr); 1386bb682001STimur Tabi return 0; 1387bb682001STimur Tabi } 1388bb682001STimur Tabi 1389bb682001STimur Tabi return 1; 1390bb682001STimur Tabi } 1391bb682001STimur Tabi 1392bb682001STimur Tabi /* 1393bb682001STimur Tabi * Returns the base address of an SOC or PCI node 1394bb682001STimur Tabi */ 1395bb682001STimur Tabi u64 fdt_get_base_address(void *fdt, int node) 1396bb682001STimur Tabi { 1397bb682001STimur Tabi int size; 1398bb682001STimur Tabi u32 naddr; 13998aa5ec6eSKim Phillips const fdt32_t *prop; 1400bb682001STimur Tabi 1401*933cdbb4SSimon Glass naddr = fdt_address_cells(fdt, node); 1402bb682001STimur Tabi 1403bb682001STimur Tabi prop = fdt_getprop(fdt, node, "ranges", &size); 1404bb682001STimur Tabi 1405bb682001STimur Tabi return prop ? fdt_translate_address(fdt, node, prop + naddr) : 0; 1406bb682001STimur Tabi } 1407c48e6868SAlexander Graf 1408c48e6868SAlexander Graf /* 1409c48e6868SAlexander Graf * Read a property of size <prop_len>. Currently only supports 1 or 2 cells. 1410c48e6868SAlexander Graf */ 1411c48e6868SAlexander Graf static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, 1412c48e6868SAlexander Graf uint64_t *val, int cells) 1413c48e6868SAlexander Graf { 1414c48e6868SAlexander Graf const fdt32_t *prop32 = &prop[cell_off]; 1415c48e6868SAlexander Graf const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off]; 1416c48e6868SAlexander Graf 1417c48e6868SAlexander Graf if ((cell_off + cells) > prop_len) 1418c48e6868SAlexander Graf return -FDT_ERR_NOSPACE; 1419c48e6868SAlexander Graf 1420c48e6868SAlexander Graf switch (cells) { 1421c48e6868SAlexander Graf case 1: 1422c48e6868SAlexander Graf *val = fdt32_to_cpu(*prop32); 1423c48e6868SAlexander Graf break; 1424c48e6868SAlexander Graf case 2: 1425c48e6868SAlexander Graf *val = fdt64_to_cpu(*prop64); 1426c48e6868SAlexander Graf break; 1427c48e6868SAlexander Graf default: 1428c48e6868SAlexander Graf return -FDT_ERR_NOSPACE; 1429c48e6868SAlexander Graf } 1430c48e6868SAlexander Graf 1431c48e6868SAlexander Graf return 0; 1432c48e6868SAlexander Graf } 1433c48e6868SAlexander Graf 1434c48e6868SAlexander Graf /** 1435c48e6868SAlexander Graf * fdt_read_range - Read a node's n'th range property 1436c48e6868SAlexander Graf * 1437c48e6868SAlexander Graf * @fdt: ptr to device tree 1438c48e6868SAlexander Graf * @node: offset of node 1439c48e6868SAlexander Graf * @n: range index 1440c48e6868SAlexander Graf * @child_addr: pointer to storage for the "child address" field 1441c48e6868SAlexander Graf * @addr: pointer to storage for the CPU view translated physical start 1442c48e6868SAlexander Graf * @len: pointer to storage for the range length 1443c48e6868SAlexander Graf * 1444c48e6868SAlexander Graf * Convenience function that reads and interprets a specific range out of 1445c48e6868SAlexander Graf * a number of the "ranges" property array. 1446c48e6868SAlexander Graf */ 1447c48e6868SAlexander Graf int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, 1448c48e6868SAlexander Graf uint64_t *addr, uint64_t *len) 1449c48e6868SAlexander Graf { 1450c48e6868SAlexander Graf int pnode = fdt_parent_offset(fdt, node); 1451c48e6868SAlexander Graf const fdt32_t *ranges; 1452c48e6868SAlexander Graf int pacells; 1453c48e6868SAlexander Graf int acells; 1454c48e6868SAlexander Graf int scells; 1455c48e6868SAlexander Graf int ranges_len; 1456c48e6868SAlexander Graf int cell = 0; 1457c48e6868SAlexander Graf int r = 0; 1458c48e6868SAlexander Graf 1459c48e6868SAlexander Graf /* 1460c48e6868SAlexander Graf * The "ranges" property is an array of 1461c48e6868SAlexander Graf * { <child address> <parent address> <size in child address space> } 1462c48e6868SAlexander Graf * 1463c48e6868SAlexander Graf * All 3 elements can span a diffent number of cells. Fetch their size. 1464c48e6868SAlexander Graf */ 1465c48e6868SAlexander Graf pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1); 1466c48e6868SAlexander Graf acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1); 1467c48e6868SAlexander Graf scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1); 1468c48e6868SAlexander Graf 1469c48e6868SAlexander Graf /* Now try to get the ranges property */ 1470c48e6868SAlexander Graf ranges = fdt_getprop(fdt, node, "ranges", &ranges_len); 1471c48e6868SAlexander Graf if (!ranges) 1472c48e6868SAlexander Graf return -FDT_ERR_NOTFOUND; 1473c48e6868SAlexander Graf ranges_len /= sizeof(uint32_t); 1474c48e6868SAlexander Graf 1475c48e6868SAlexander Graf /* Jump to the n'th entry */ 1476c48e6868SAlexander Graf cell = n * (pacells + acells + scells); 1477c48e6868SAlexander Graf 1478c48e6868SAlexander Graf /* Read <child address> */ 1479c48e6868SAlexander Graf if (child_addr) { 1480c48e6868SAlexander Graf r = fdt_read_prop(ranges, ranges_len, cell, child_addr, 1481c48e6868SAlexander Graf acells); 1482c48e6868SAlexander Graf if (r) 1483c48e6868SAlexander Graf return r; 1484c48e6868SAlexander Graf } 1485c48e6868SAlexander Graf cell += acells; 1486c48e6868SAlexander Graf 1487c48e6868SAlexander Graf /* Read <parent address> */ 1488c48e6868SAlexander Graf if (addr) 1489c48e6868SAlexander Graf *addr = fdt_translate_address(fdt, node, ranges + cell); 1490c48e6868SAlexander Graf cell += pacells; 1491c48e6868SAlexander Graf 1492c48e6868SAlexander Graf /* Read <size in child address space> */ 1493c48e6868SAlexander Graf if (len) { 1494c48e6868SAlexander Graf r = fdt_read_prop(ranges, ranges_len, cell, len, scells); 1495c48e6868SAlexander Graf if (r) 1496c48e6868SAlexander Graf return r; 1497c48e6868SAlexander Graf } 1498c48e6868SAlexander Graf 1499c48e6868SAlexander Graf return 0; 1500c48e6868SAlexander Graf } 1501