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> 11e48f3741SSimon Glass #include <inttypes.h> 123e303f74SAnton Vorontsov #include <stdio_dev.h> 1364dbbd40SGerald Van Baren #include <linux/ctype.h> 1464dbbd40SGerald Van Baren #include <linux/types.h> 1564dbbd40SGerald Van Baren #include <asm/global_data.h> 1664dbbd40SGerald Van Baren #include <libfdt.h> 1764dbbd40SGerald Van Baren #include <fdt_support.h> 18151c8b09SKumar Gala #include <exports.h> 19a0ae380bSBin Meng #include <fdtdec.h> 2064dbbd40SGerald Van Baren 213bed2aafSKumar Gala /** 2294fb182cSAlexander Graf * fdt_getprop_u32_default_node - Return a node's property or a default 2394fb182cSAlexander Graf * 2494fb182cSAlexander Graf * @fdt: ptr to device tree 2594fb182cSAlexander Graf * @off: offset of node 2694fb182cSAlexander Graf * @cell: cell offset in property 2794fb182cSAlexander Graf * @prop: property name 2894fb182cSAlexander Graf * @dflt: default value if the property isn't found 2994fb182cSAlexander Graf * 3094fb182cSAlexander Graf * Convenience function to return a node's property or a default value if 3194fb182cSAlexander Graf * the property doesn't exist. 3294fb182cSAlexander Graf */ 3394fb182cSAlexander Graf u32 fdt_getprop_u32_default_node(const void *fdt, int off, int cell, 3494fb182cSAlexander Graf const char *prop, const u32 dflt) 3594fb182cSAlexander Graf { 3694fb182cSAlexander Graf const fdt32_t *val; 3794fb182cSAlexander Graf int len; 3894fb182cSAlexander Graf 3994fb182cSAlexander Graf val = fdt_getprop(fdt, off, prop, &len); 4094fb182cSAlexander Graf 4194fb182cSAlexander Graf /* Check if property exists */ 4294fb182cSAlexander Graf if (!val) 4394fb182cSAlexander Graf return dflt; 4494fb182cSAlexander Graf 4594fb182cSAlexander Graf /* Check if property is long enough */ 4694fb182cSAlexander Graf if (len < ((cell + 1) * sizeof(uint32_t))) 4794fb182cSAlexander Graf return dflt; 4894fb182cSAlexander Graf 4994fb182cSAlexander Graf return fdt32_to_cpu(*val); 5094fb182cSAlexander Graf } 5194fb182cSAlexander Graf 5294fb182cSAlexander Graf /** 533bed2aafSKumar Gala * fdt_getprop_u32_default - Find a node and return it's property or a default 543bed2aafSKumar Gala * 553bed2aafSKumar Gala * @fdt: ptr to device tree 563bed2aafSKumar Gala * @path: path of node 573bed2aafSKumar Gala * @prop: property name 583bed2aafSKumar Gala * @dflt: default value if the property isn't found 593bed2aafSKumar Gala * 603bed2aafSKumar Gala * Convenience function to find a node and return it's property or a 613bed2aafSKumar Gala * default value if it doesn't exist. 623bed2aafSKumar Gala */ 6307e12784SGabe Black u32 fdt_getprop_u32_default(const void *fdt, const char *path, 6407e12784SGabe Black const char *prop, const u32 dflt) 653bed2aafSKumar Gala { 663bed2aafSKumar Gala int off; 673bed2aafSKumar Gala 683bed2aafSKumar Gala off = fdt_path_offset(fdt, path); 693bed2aafSKumar Gala if (off < 0) 703bed2aafSKumar Gala return dflt; 713bed2aafSKumar Gala 7294fb182cSAlexander Graf return fdt_getprop_u32_default_node(fdt, off, 0, prop, dflt); 733bed2aafSKumar Gala } 7464dbbd40SGerald Van Baren 75a3c2933eSKumar Gala /** 76a3c2933eSKumar Gala * fdt_find_and_setprop: Find a node and set it's property 77a3c2933eSKumar Gala * 78a3c2933eSKumar Gala * @fdt: ptr to device tree 79a3c2933eSKumar Gala * @node: path of node 80a3c2933eSKumar Gala * @prop: property name 81a3c2933eSKumar Gala * @val: ptr to new value 82a3c2933eSKumar Gala * @len: length of new property value 83a3c2933eSKumar Gala * @create: flag to create the property if it doesn't exist 84a3c2933eSKumar Gala * 85a3c2933eSKumar Gala * Convenience function to directly set a property given the path to the node. 86a3c2933eSKumar Gala */ 87a3c2933eSKumar Gala int fdt_find_and_setprop(void *fdt, const char *node, const char *prop, 88a3c2933eSKumar Gala const void *val, int len, int create) 89a3c2933eSKumar Gala { 908d04f02fSKumar Gala int nodeoff = fdt_path_offset(fdt, node); 91a3c2933eSKumar Gala 92a3c2933eSKumar Gala if (nodeoff < 0) 93a3c2933eSKumar Gala return nodeoff; 94a3c2933eSKumar Gala 958aa5ec6eSKim Phillips if ((!create) && (fdt_get_property(fdt, nodeoff, prop, NULL) == NULL)) 96a3c2933eSKumar Gala return 0; /* create flag not set; so exit quietly */ 97a3c2933eSKumar Gala 98a3c2933eSKumar Gala return fdt_setprop(fdt, nodeoff, prop, val, len); 99a3c2933eSKumar Gala } 100a3c2933eSKumar Gala 1018edb2192SMasahiro Yamada /** 102a9e8e291SSimon Glass * fdt_find_or_add_subnode() - find or possibly add a subnode of a given node 103a9e8e291SSimon Glass * 1048edb2192SMasahiro Yamada * @fdt: pointer to the device tree blob 1058edb2192SMasahiro Yamada * @parentoffset: structure block offset of a node 1068edb2192SMasahiro Yamada * @name: name of the subnode to locate 1078edb2192SMasahiro Yamada * 1088edb2192SMasahiro Yamada * fdt_subnode_offset() finds a subnode of the node with a given name. 1098edb2192SMasahiro Yamada * If the subnode does not exist, it will be created. 1108edb2192SMasahiro Yamada */ 111a9e8e291SSimon Glass int fdt_find_or_add_subnode(void *fdt, int parentoffset, const char *name) 1128edb2192SMasahiro Yamada { 1138edb2192SMasahiro Yamada int offset; 1148edb2192SMasahiro Yamada 1158edb2192SMasahiro Yamada offset = fdt_subnode_offset(fdt, parentoffset, name); 1168edb2192SMasahiro Yamada 1178edb2192SMasahiro Yamada if (offset == -FDT_ERR_NOTFOUND) 1188edb2192SMasahiro Yamada offset = fdt_add_subnode(fdt, parentoffset, name); 1198edb2192SMasahiro Yamada 1208edb2192SMasahiro Yamada if (offset < 0) 1218edb2192SMasahiro Yamada printf("%s: %s: %s\n", __func__, name, fdt_strerror(offset)); 1228edb2192SMasahiro Yamada 1238edb2192SMasahiro Yamada return offset; 1248edb2192SMasahiro Yamada } 1258edb2192SMasahiro Yamada 126972f2a89SMasahiro Yamada /* rename to CONFIG_OF_STDOUT_PATH ? */ 127972f2a89SMasahiro Yamada #if defined(OF_STDOUT_PATH) 128972f2a89SMasahiro Yamada static int fdt_fixup_stdout(void *fdt, int chosenoff) 129972f2a89SMasahiro Yamada { 130972f2a89SMasahiro Yamada return fdt_setprop(fdt, chosenoff, "linux,stdout-path", 131972f2a89SMasahiro Yamada OF_STDOUT_PATH, strlen(OF_STDOUT_PATH) + 1); 132972f2a89SMasahiro Yamada } 133972f2a89SMasahiro Yamada #elif defined(CONFIG_OF_STDOUT_VIA_ALIAS) && defined(CONFIG_CONS_INDEX) 13440777812SDetlev Zundel static int fdt_fixup_stdout(void *fdt, int chosenoff) 135151c8b09SKumar Gala { 136972f2a89SMasahiro Yamada int err; 137972f2a89SMasahiro Yamada int aliasoff; 138151c8b09SKumar Gala char sername[9] = { 0 }; 139972f2a89SMasahiro Yamada const void *path; 140972f2a89SMasahiro Yamada int len; 141972f2a89SMasahiro Yamada char tmp[256]; /* long enough */ 142151c8b09SKumar Gala 143151c8b09SKumar Gala sprintf(sername, "serial%d", CONFIG_CONS_INDEX - 1); 144151c8b09SKumar Gala 145972f2a89SMasahiro Yamada aliasoff = fdt_path_offset(fdt, "/aliases"); 146972f2a89SMasahiro Yamada if (aliasoff < 0) { 147972f2a89SMasahiro Yamada err = aliasoff; 148da77c819SScott Wood goto noalias; 149151c8b09SKumar Gala } 150972f2a89SMasahiro Yamada 151972f2a89SMasahiro Yamada path = fdt_getprop(fdt, aliasoff, sername, &len); 152972f2a89SMasahiro Yamada if (!path) { 153151c8b09SKumar Gala err = len; 154da77c819SScott Wood goto noalias; 155151c8b09SKumar Gala } 156972f2a89SMasahiro Yamada 157972f2a89SMasahiro Yamada /* fdt_setprop may break "path" so we copy it to tmp buffer */ 158972f2a89SMasahiro Yamada memcpy(tmp, path, len); 159972f2a89SMasahiro Yamada 160972f2a89SMasahiro Yamada err = fdt_setprop(fdt, chosenoff, "linux,stdout-path", tmp, len); 161151c8b09SKumar Gala if (err < 0) 162151c8b09SKumar Gala printf("WARNING: could not set linux,stdout-path %s.\n", 163151c8b09SKumar Gala fdt_strerror(err)); 164151c8b09SKumar Gala 165151c8b09SKumar Gala return err; 166da77c819SScott Wood 167da77c819SScott Wood noalias: 168da77c819SScott Wood printf("WARNING: %s: could not read %s alias: %s\n", 169da77c819SScott Wood __func__, sername, fdt_strerror(err)); 170da77c819SScott Wood 171da77c819SScott Wood return 0; 172151c8b09SKumar Gala } 173972f2a89SMasahiro Yamada #else 174972f2a89SMasahiro Yamada static int fdt_fixup_stdout(void *fdt, int chosenoff) 175972f2a89SMasahiro Yamada { 176972f2a89SMasahiro Yamada return 0; 177972f2a89SMasahiro Yamada } 178151c8b09SKumar Gala #endif 179151c8b09SKumar Gala 180f18295d3SMasahiro Yamada static inline int fdt_setprop_uxx(void *fdt, int nodeoffset, const char *name, 181f18295d3SMasahiro Yamada uint64_t val, int is_u64) 182f18295d3SMasahiro Yamada { 183f18295d3SMasahiro Yamada if (is_u64) 184f18295d3SMasahiro Yamada return fdt_setprop_u64(fdt, nodeoffset, name, val); 185f18295d3SMasahiro Yamada else 186f18295d3SMasahiro Yamada return fdt_setprop_u32(fdt, nodeoffset, name, (uint32_t)val); 187f18295d3SMasahiro Yamada } 188f18295d3SMasahiro Yamada 18910be5b5dSPaul Kocialkowski int fdt_root(void *fdt) 19010be5b5dSPaul Kocialkowski { 19110be5b5dSPaul Kocialkowski char *serial; 19210be5b5dSPaul Kocialkowski int err; 19310be5b5dSPaul Kocialkowski 19410be5b5dSPaul Kocialkowski err = fdt_check_header(fdt); 19510be5b5dSPaul Kocialkowski if (err < 0) { 19610be5b5dSPaul Kocialkowski printf("fdt_root: %s\n", fdt_strerror(err)); 19710be5b5dSPaul Kocialkowski return err; 19810be5b5dSPaul Kocialkowski } 19910be5b5dSPaul Kocialkowski 200*00caae6dSSimon Glass serial = env_get("serial#"); 20110be5b5dSPaul Kocialkowski if (serial) { 20210be5b5dSPaul Kocialkowski err = fdt_setprop(fdt, 0, "serial-number", serial, 20310be5b5dSPaul Kocialkowski strlen(serial) + 1); 20410be5b5dSPaul Kocialkowski 20510be5b5dSPaul Kocialkowski if (err < 0) { 20610be5b5dSPaul Kocialkowski printf("WARNING: could not set serial-number %s.\n", 20710be5b5dSPaul Kocialkowski fdt_strerror(err)); 20810be5b5dSPaul Kocialkowski return err; 20910be5b5dSPaul Kocialkowski } 21010be5b5dSPaul Kocialkowski } 21110be5b5dSPaul Kocialkowski 21210be5b5dSPaul Kocialkowski return 0; 21310be5b5dSPaul Kocialkowski } 214f18295d3SMasahiro Yamada 215dbe963aeSMasahiro Yamada int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end) 21664dbbd40SGerald Van Baren { 217f18295d3SMasahiro Yamada int nodeoffset; 2182a1a2cb6SKumar Gala int err, j, total; 219f18295d3SMasahiro Yamada int is_u64; 2202a1a2cb6SKumar Gala uint64_t addr, size; 22164dbbd40SGerald Van Baren 22250babaf8SMasahiro Yamada /* just return if the size of initrd is zero */ 22350babaf8SMasahiro Yamada if (initrd_start == initrd_end) 22450babaf8SMasahiro Yamada return 0; 22550babaf8SMasahiro Yamada 2268edb2192SMasahiro Yamada /* find or create "/chosen" node. */ 2278edb2192SMasahiro Yamada nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); 2288edb2192SMasahiro Yamada if (nodeoffset < 0) 2292a1a2cb6SKumar Gala return nodeoffset; 23064dbbd40SGerald Van Baren 2312a1a2cb6SKumar Gala total = fdt_num_mem_rsv(fdt); 232c28abb9cSGerald Van Baren 233c28abb9cSGerald Van Baren /* 234c28abb9cSGerald Van Baren * Look for an existing entry and update it. If we don't find 235c28abb9cSGerald Van Baren * the entry, we will j be the next available slot. 236c28abb9cSGerald Van Baren */ 2378d04f02fSKumar Gala for (j = 0; j < total; j++) { 2388d04f02fSKumar Gala err = fdt_get_mem_rsv(fdt, j, &addr, &size); 2398d04f02fSKumar Gala if (addr == initrd_start) { 2408d04f02fSKumar Gala fdt_del_mem_rsv(fdt, j); 241c28abb9cSGerald Van Baren break; 242c28abb9cSGerald Van Baren } 243c28abb9cSGerald Van Baren } 2448d04f02fSKumar Gala 245ce6b27a8SGrant Likely err = fdt_add_mem_rsv(fdt, initrd_start, initrd_end - initrd_start); 24664dbbd40SGerald Van Baren if (err < 0) { 2472a1a2cb6SKumar Gala printf("fdt_initrd: %s\n", fdt_strerror(err)); 24864dbbd40SGerald Van Baren return err; 24964dbbd40SGerald Van Baren } 2502a1a2cb6SKumar Gala 251933cdbb4SSimon Glass is_u64 = (fdt_address_cells(fdt, 0) == 2); 252f77a606aSDavid Feng 253f18295d3SMasahiro Yamada err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-start", 254f18295d3SMasahiro Yamada (uint64_t)initrd_start, is_u64); 255f18295d3SMasahiro Yamada 2562a1a2cb6SKumar Gala if (err < 0) { 257dbe963aeSMasahiro Yamada printf("WARNING: could not set linux,initrd-start %s.\n", 2582a1a2cb6SKumar Gala fdt_strerror(err)); 2592a1a2cb6SKumar Gala return err; 2602a1a2cb6SKumar Gala } 261f18295d3SMasahiro Yamada 262f18295d3SMasahiro Yamada err = fdt_setprop_uxx(fdt, nodeoffset, "linux,initrd-end", 263f18295d3SMasahiro Yamada (uint64_t)initrd_end, is_u64); 264f18295d3SMasahiro Yamada 2652a1a2cb6SKumar Gala if (err < 0) { 2662a1a2cb6SKumar Gala printf("WARNING: could not set linux,initrd-end %s.\n", 2672a1a2cb6SKumar Gala fdt_strerror(err)); 2682a1a2cb6SKumar Gala 2692a1a2cb6SKumar Gala return err; 2702a1a2cb6SKumar Gala } 2712a1a2cb6SKumar Gala 2722a1a2cb6SKumar Gala return 0; 2732a1a2cb6SKumar Gala } 2742a1a2cb6SKumar Gala 275bc6ed0f9SMasahiro Yamada int fdt_chosen(void *fdt) 2762a1a2cb6SKumar Gala { 2772a1a2cb6SKumar Gala int nodeoffset; 2782a1a2cb6SKumar Gala int err; 2792a1a2cb6SKumar Gala char *str; /* used to set string properties */ 2802a1a2cb6SKumar Gala 2812a1a2cb6SKumar Gala err = fdt_check_header(fdt); 2822a1a2cb6SKumar Gala if (err < 0) { 2832a1a2cb6SKumar Gala printf("fdt_chosen: %s\n", fdt_strerror(err)); 2842a1a2cb6SKumar Gala return err; 28564dbbd40SGerald Van Baren } 28664dbbd40SGerald Van Baren 2878edb2192SMasahiro Yamada /* find or create "/chosen" node. */ 2888edb2192SMasahiro Yamada nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen"); 2898edb2192SMasahiro Yamada if (nodeoffset < 0) 29064dbbd40SGerald Van Baren return nodeoffset; 29164dbbd40SGerald Van Baren 292*00caae6dSSimon Glass str = env_get("bootargs"); 293972f2a89SMasahiro Yamada if (str) { 294972f2a89SMasahiro Yamada err = fdt_setprop(fdt, nodeoffset, "bootargs", str, 295972f2a89SMasahiro Yamada strlen(str) + 1); 296972f2a89SMasahiro Yamada if (err < 0) { 2975fe6be62SGerald Van Baren printf("WARNING: could not set bootargs %s.\n", 29835ec398fSGerald Van Baren fdt_strerror(err)); 299972f2a89SMasahiro Yamada return err; 300972f2a89SMasahiro Yamada } 30164dbbd40SGerald Van Baren } 3022a1a2cb6SKumar Gala 303972f2a89SMasahiro Yamada return fdt_fixup_stdout(fdt, nodeoffset); 30464dbbd40SGerald Van Baren } 30564dbbd40SGerald Van Baren 306e93becf8SKumar Gala void do_fixup_by_path(void *fdt, const char *path, const char *prop, 307e93becf8SKumar Gala const void *val, int len, int create) 308e93becf8SKumar Gala { 309e93becf8SKumar Gala #if defined(DEBUG) 310e93becf8SKumar Gala int i; 311d9ad115bSKumar Gala debug("Updating property '%s/%s' = ", path, prop); 312e93becf8SKumar Gala for (i = 0; i < len; i++) 313e93becf8SKumar Gala debug(" %.2x", *(u8*)(val+i)); 314e93becf8SKumar Gala debug("\n"); 315e93becf8SKumar Gala #endif 316e93becf8SKumar Gala int rc = fdt_find_and_setprop(fdt, path, prop, val, len, create); 317e93becf8SKumar Gala if (rc) 318e93becf8SKumar Gala printf("Unable to update property %s:%s, err=%s\n", 319e93becf8SKumar Gala path, prop, fdt_strerror(rc)); 320e93becf8SKumar Gala } 321e93becf8SKumar Gala 322e93becf8SKumar Gala void do_fixup_by_path_u32(void *fdt, const char *path, const char *prop, 323e93becf8SKumar Gala u32 val, int create) 324e93becf8SKumar Gala { 3258aa5ec6eSKim Phillips fdt32_t tmp = cpu_to_fdt32(val); 3268aa5ec6eSKim Phillips do_fixup_by_path(fdt, path, prop, &tmp, sizeof(tmp), create); 327e93becf8SKumar Gala } 328e93becf8SKumar Gala 3299eb77ceaSKumar Gala void do_fixup_by_prop(void *fdt, 3309eb77ceaSKumar Gala const char *pname, const void *pval, int plen, 3319eb77ceaSKumar Gala const char *prop, const void *val, int len, 3329eb77ceaSKumar Gala int create) 3339eb77ceaSKumar Gala { 3349eb77ceaSKumar Gala int off; 3359eb77ceaSKumar Gala #if defined(DEBUG) 3369eb77ceaSKumar Gala int i; 337d9ad115bSKumar Gala debug("Updating property '%s' = ", prop); 3389eb77ceaSKumar Gala for (i = 0; i < len; i++) 3399eb77ceaSKumar Gala debug(" %.2x", *(u8*)(val+i)); 3409eb77ceaSKumar Gala debug("\n"); 3419eb77ceaSKumar Gala #endif 3429eb77ceaSKumar Gala off = fdt_node_offset_by_prop_value(fdt, -1, pname, pval, plen); 3439eb77ceaSKumar Gala while (off != -FDT_ERR_NOTFOUND) { 3448aa5ec6eSKim Phillips if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) 3459eb77ceaSKumar Gala fdt_setprop(fdt, off, prop, val, len); 3469eb77ceaSKumar Gala off = fdt_node_offset_by_prop_value(fdt, off, pname, pval, plen); 3479eb77ceaSKumar Gala } 3489eb77ceaSKumar Gala } 3499eb77ceaSKumar Gala 3509eb77ceaSKumar Gala void do_fixup_by_prop_u32(void *fdt, 3519eb77ceaSKumar Gala const char *pname, const void *pval, int plen, 3529eb77ceaSKumar Gala const char *prop, u32 val, int create) 3539eb77ceaSKumar Gala { 3548aa5ec6eSKim Phillips fdt32_t tmp = cpu_to_fdt32(val); 3558aa5ec6eSKim Phillips do_fixup_by_prop(fdt, pname, pval, plen, prop, &tmp, 4, create); 3569eb77ceaSKumar Gala } 3579eb77ceaSKumar Gala 3589eb77ceaSKumar Gala void do_fixup_by_compat(void *fdt, const char *compat, 3599eb77ceaSKumar Gala const char *prop, const void *val, int len, int create) 3609eb77ceaSKumar Gala { 3619eb77ceaSKumar Gala int off = -1; 3629eb77ceaSKumar Gala #if defined(DEBUG) 3639eb77ceaSKumar Gala int i; 364d9ad115bSKumar Gala debug("Updating property '%s' = ", prop); 3659eb77ceaSKumar Gala for (i = 0; i < len; i++) 3669eb77ceaSKumar Gala debug(" %.2x", *(u8*)(val+i)); 3679eb77ceaSKumar Gala debug("\n"); 3689eb77ceaSKumar Gala #endif 3699eb77ceaSKumar Gala off = fdt_node_offset_by_compatible(fdt, -1, compat); 3709eb77ceaSKumar Gala while (off != -FDT_ERR_NOTFOUND) { 3718aa5ec6eSKim Phillips if (create || (fdt_get_property(fdt, off, prop, NULL) != NULL)) 3729eb77ceaSKumar Gala fdt_setprop(fdt, off, prop, val, len); 3739eb77ceaSKumar Gala off = fdt_node_offset_by_compatible(fdt, off, compat); 3749eb77ceaSKumar Gala } 3759eb77ceaSKumar Gala } 3769eb77ceaSKumar Gala 3779eb77ceaSKumar Gala void do_fixup_by_compat_u32(void *fdt, const char *compat, 3789eb77ceaSKumar Gala const char *prop, u32 val, int create) 3799eb77ceaSKumar Gala { 3808aa5ec6eSKim Phillips fdt32_t tmp = cpu_to_fdt32(val); 3818aa5ec6eSKim Phillips do_fixup_by_compat(fdt, compat, prop, &tmp, 4, create); 3829eb77ceaSKumar Gala } 3839eb77ceaSKumar Gala 38463c09417SMasahiro Yamada #ifdef CONFIG_ARCH_FIXUP_FDT_MEMORY 385739a01edSMasahiro Yamada /* 386739a01edSMasahiro Yamada * fdt_pack_reg - pack address and size array into the "reg"-suitable stream 387739a01edSMasahiro Yamada */ 38841f09bbeSSimon Glass static int fdt_pack_reg(const void *fdt, void *buf, u64 *address, u64 *size, 38941f09bbeSSimon Glass int n) 390739a01edSMasahiro Yamada { 391739a01edSMasahiro Yamada int i; 392ffccb84cSHans de Goede int address_cells = fdt_address_cells(fdt, 0); 393ffccb84cSHans de Goede int size_cells = fdt_size_cells(fdt, 0); 394739a01edSMasahiro Yamada char *p = buf; 395739a01edSMasahiro Yamada 396739a01edSMasahiro Yamada for (i = 0; i < n; i++) { 397ffccb84cSHans de Goede if (address_cells == 2) 398739a01edSMasahiro Yamada *(fdt64_t *)p = cpu_to_fdt64(address[i]); 399739a01edSMasahiro Yamada else 400739a01edSMasahiro Yamada *(fdt32_t *)p = cpu_to_fdt32(address[i]); 401ffccb84cSHans de Goede p += 4 * address_cells; 402739a01edSMasahiro Yamada 403ffccb84cSHans de Goede if (size_cells == 2) 404739a01edSMasahiro Yamada *(fdt64_t *)p = cpu_to_fdt64(size[i]); 405739a01edSMasahiro Yamada else 406739a01edSMasahiro Yamada *(fdt32_t *)p = cpu_to_fdt32(size[i]); 407ffccb84cSHans de Goede p += 4 * size_cells; 408739a01edSMasahiro Yamada } 409739a01edSMasahiro Yamada 410739a01edSMasahiro Yamada return p - (char *)buf; 411739a01edSMasahiro Yamada } 412739a01edSMasahiro Yamada 4135e574546SDoug Anderson #ifdef CONFIG_NR_DRAM_BANKS 4145e574546SDoug Anderson #define MEMORY_BANKS_MAX CONFIG_NR_DRAM_BANKS 4155e574546SDoug Anderson #else 4168aa5ec6eSKim Phillips #define MEMORY_BANKS_MAX 4 4175e574546SDoug Anderson #endif 418a6bd9e83SJohn Rigby int fdt_fixup_memory_banks(void *blob, u64 start[], u64 size[], int banks) 419a6bd9e83SJohn Rigby { 420a6bd9e83SJohn Rigby int err, nodeoffset; 421739a01edSMasahiro Yamada int len; 4228aa5ec6eSKim Phillips u8 tmp[MEMORY_BANKS_MAX * 16]; /* Up to 64-bit address + 64-bit size */ 4233c927281SKumar Gala 4248aa5ec6eSKim Phillips if (banks > MEMORY_BANKS_MAX) { 4258aa5ec6eSKim Phillips printf("%s: num banks %d exceeds hardcoded limit %d." 4268aa5ec6eSKim Phillips " Recompile with higher MEMORY_BANKS_MAX?\n", 4278aa5ec6eSKim Phillips __FUNCTION__, banks, MEMORY_BANKS_MAX); 4288aa5ec6eSKim Phillips return -1; 4298aa5ec6eSKim Phillips } 4308aa5ec6eSKim Phillips 4313c927281SKumar Gala err = fdt_check_header(blob); 4323c927281SKumar Gala if (err < 0) { 4333c927281SKumar Gala printf("%s: %s\n", __FUNCTION__, fdt_strerror(err)); 4343c927281SKumar Gala return err; 4353c927281SKumar Gala } 4363c927281SKumar Gala 4378edb2192SMasahiro Yamada /* find or create "/memory" node. */ 4388edb2192SMasahiro Yamada nodeoffset = fdt_find_or_add_subnode(blob, 0, "memory"); 4398edb2192SMasahiro Yamada if (nodeoffset < 0) 4403c927281SKumar Gala return nodeoffset; 4418edb2192SMasahiro Yamada 4423c927281SKumar Gala err = fdt_setprop(blob, nodeoffset, "device_type", "memory", 4433c927281SKumar Gala sizeof("memory")); 4443c927281SKumar Gala if (err < 0) { 4453c927281SKumar Gala printf("WARNING: could not set %s %s.\n", "device_type", 4463c927281SKumar Gala fdt_strerror(err)); 4473c927281SKumar Gala return err; 4483c927281SKumar Gala } 4493c927281SKumar Gala 4505c1cf89fSAndre Przywara if (!banks) 4515c1cf89fSAndre Przywara return 0; 4525c1cf89fSAndre Przywara 453739a01edSMasahiro Yamada len = fdt_pack_reg(blob, tmp, start, size, banks); 4543c927281SKumar Gala 4553c927281SKumar Gala err = fdt_setprop(blob, nodeoffset, "reg", tmp, len); 4563c927281SKumar Gala if (err < 0) { 4573c927281SKumar Gala printf("WARNING: could not set %s %s.\n", 4583c927281SKumar Gala "reg", fdt_strerror(err)); 4593c927281SKumar Gala return err; 4603c927281SKumar Gala } 4613c927281SKumar Gala return 0; 4623c927281SKumar Gala } 46363c09417SMasahiro Yamada #endif 4643c927281SKumar Gala 465a6bd9e83SJohn Rigby int fdt_fixup_memory(void *blob, u64 start, u64 size) 466a6bd9e83SJohn Rigby { 467a6bd9e83SJohn Rigby return fdt_fixup_memory_banks(blob, &start, &size, 1); 468a6bd9e83SJohn Rigby } 469a6bd9e83SJohn Rigby 470ba37aa03SKumar Gala void fdt_fixup_ethernet(void *fdt) 471ab544633SKumar Gala { 472a434fd1dSLev Iserovich int i, j, prop; 473bc393a79SBin Meng char *tmp, *end; 474064d55f8SStephen Warren char mac[16]; 475ab544633SKumar Gala const char *path; 476a40db6d5Soliver@schinagl.nl unsigned char mac_addr[ARP_HLEN]; 477bc393a79SBin Meng int offset; 478ab544633SKumar Gala 479a434fd1dSLev Iserovich if (fdt_path_offset(fdt, "/aliases") < 0) 480ba37aa03SKumar Gala return; 481ba37aa03SKumar Gala 482a434fd1dSLev Iserovich /* Cycle through all aliases */ 483a434fd1dSLev Iserovich for (prop = 0; ; prop++) { 484bc393a79SBin Meng const char *name; 485b1f49ab8SDan Murphy 486a434fd1dSLev Iserovich /* FDT might have been edited, recompute the offset */ 487a434fd1dSLev Iserovich offset = fdt_first_property_offset(fdt, 488a434fd1dSLev Iserovich fdt_path_offset(fdt, "/aliases")); 489a434fd1dSLev Iserovich /* Select property number 'prop' */ 490a434fd1dSLev Iserovich for (i = 0; i < prop; i++) 491a434fd1dSLev Iserovich offset = fdt_next_property_offset(fdt, offset); 492a434fd1dSLev Iserovich 493a434fd1dSLev Iserovich if (offset < 0) 494a434fd1dSLev Iserovich break; 495a434fd1dSLev Iserovich 496bc393a79SBin Meng path = fdt_getprop_by_offset(fdt, offset, &name, NULL); 497f8e57c65STuomas Tynkkynen if (!strncmp(name, "ethernet", 8)) { 498f8e57c65STuomas Tynkkynen /* Treat plain "ethernet" same as "ethernet0". */ 499f8e57c65STuomas Tynkkynen if (!strcmp(name, "ethernet")) 500f8e57c65STuomas Tynkkynen i = 0; 501f8e57c65STuomas Tynkkynen else 502bc393a79SBin Meng i = trailing_strtol(name); 503f8e57c65STuomas Tynkkynen 504bc393a79SBin Meng if (i != -1) { 505bc393a79SBin Meng if (i == 0) 50652d825ccSBin Meng strcpy(mac, "ethaddr"); 507bc393a79SBin Meng else 508bc393a79SBin Meng sprintf(mac, "eth%daddr", i); 509bc393a79SBin Meng } else { 510ba37aa03SKumar Gala continue; 511ba37aa03SKumar Gala } 512*00caae6dSSimon Glass tmp = env_get(mac); 513bc393a79SBin Meng if (!tmp) 514bc393a79SBin Meng continue; 515ba37aa03SKumar Gala 516ba37aa03SKumar Gala for (j = 0; j < 6; j++) { 517bc393a79SBin Meng mac_addr[j] = tmp ? 518bc393a79SBin Meng simple_strtoul(tmp, &end, 16) : 0; 519ba37aa03SKumar Gala if (tmp) 520ba37aa03SKumar Gala tmp = (*end) ? end + 1 : end; 521ba37aa03SKumar Gala } 522ba37aa03SKumar Gala 523bc393a79SBin Meng do_fixup_by_path(fdt, path, "mac-address", 524bc393a79SBin Meng &mac_addr, 6, 0); 525ab544633SKumar Gala do_fixup_by_path(fdt, path, "local-mac-address", 526ba37aa03SKumar Gala &mac_addr, 6, 1); 527bc393a79SBin Meng } 528ab544633SKumar Gala } 529ab544633SKumar Gala } 53018e69a35SAnton Vorontsov 5313082d234SKumar Gala /* Resize the fdt to its actual size + a bit of padding */ 532ef476836SHannes Schmelzer int fdt_shrink_to_minimum(void *blob, uint extrasize) 5333082d234SKumar Gala { 5343082d234SKumar Gala int i; 5353082d234SKumar Gala uint64_t addr, size; 5363082d234SKumar Gala int total, ret; 5373082d234SKumar Gala uint actualsize; 5383082d234SKumar Gala 5393082d234SKumar Gala if (!blob) 5403082d234SKumar Gala return 0; 5413082d234SKumar Gala 5423082d234SKumar Gala total = fdt_num_mem_rsv(blob); 5433082d234SKumar Gala for (i = 0; i < total; i++) { 5443082d234SKumar Gala fdt_get_mem_rsv(blob, i, &addr, &size); 54592549358SSimon Glass if (addr == (uintptr_t)blob) { 5463082d234SKumar Gala fdt_del_mem_rsv(blob, i); 5473082d234SKumar Gala break; 5483082d234SKumar Gala } 5493082d234SKumar Gala } 5503082d234SKumar Gala 551f242a088SPeter Korsgaard /* 552f242a088SPeter Korsgaard * Calculate the actual size of the fdt 5533840ebfaSFeng Wang * plus the size needed for 5 fdt_add_mem_rsv, one 5543840ebfaSFeng Wang * for the fdt itself and 4 for a possible initrd 5553840ebfaSFeng Wang * ((initrd-start + initrd-end) * 2 (name & value)) 556f242a088SPeter Korsgaard */ 5573082d234SKumar Gala actualsize = fdt_off_dt_strings(blob) + 5583840ebfaSFeng Wang fdt_size_dt_strings(blob) + 5 * sizeof(struct fdt_reserve_entry); 5593082d234SKumar Gala 560ef476836SHannes Schmelzer actualsize += extrasize; 5613082d234SKumar Gala /* Make it so the fdt ends on a page boundary */ 56292549358SSimon Glass actualsize = ALIGN(actualsize + ((uintptr_t)blob & 0xfff), 0x1000); 56392549358SSimon Glass actualsize = actualsize - ((uintptr_t)blob & 0xfff); 5643082d234SKumar Gala 5653082d234SKumar Gala /* Change the fdt header to reflect the correct size */ 5663082d234SKumar Gala fdt_set_totalsize(blob, actualsize); 5673082d234SKumar Gala 5683082d234SKumar Gala /* Add the new reservation */ 56992549358SSimon Glass ret = fdt_add_mem_rsv(blob, (uintptr_t)blob, actualsize); 5703082d234SKumar Gala if (ret < 0) 5713082d234SKumar Gala return ret; 5723082d234SKumar Gala 5733082d234SKumar Gala return actualsize; 5743082d234SKumar Gala } 5758ab451c4SKumar Gala 5768ab451c4SKumar Gala #ifdef CONFIG_PCI 577cfd700beSKumar Gala #define CONFIG_SYS_PCI_NR_INBOUND_WIN 4 5788ab451c4SKumar Gala 5798ab451c4SKumar Gala #define FDT_PCI_PREFETCH (0x40000000) 5808ab451c4SKumar Gala #define FDT_PCI_MEM32 (0x02000000) 5818ab451c4SKumar Gala #define FDT_PCI_IO (0x01000000) 5828ab451c4SKumar Gala #define FDT_PCI_MEM64 (0x03000000) 5838ab451c4SKumar Gala 5848ab451c4SKumar Gala int fdt_pci_dma_ranges(void *blob, int phb_off, struct pci_controller *hose) { 5858ab451c4SKumar Gala 5868ab451c4SKumar Gala int addrcell, sizecell, len, r; 5878ab451c4SKumar Gala u32 *dma_range; 5888ab451c4SKumar Gala /* sized based on pci addr cells, size-cells, & address-cells */ 5898ab451c4SKumar Gala u32 dma_ranges[(3 + 2 + 2) * CONFIG_SYS_PCI_NR_INBOUND_WIN]; 5908ab451c4SKumar Gala 5918ab451c4SKumar Gala addrcell = fdt_getprop_u32_default(blob, "/", "#address-cells", 1); 5928ab451c4SKumar Gala sizecell = fdt_getprop_u32_default(blob, "/", "#size-cells", 1); 5938ab451c4SKumar Gala 5948ab451c4SKumar Gala dma_range = &dma_ranges[0]; 5958ab451c4SKumar Gala for (r = 0; r < hose->region_count; r++) { 5968ab451c4SKumar Gala u64 bus_start, phys_start, size; 5978ab451c4SKumar Gala 598ff4e66e9SKumar Gala /* skip if !PCI_REGION_SYS_MEMORY */ 599ff4e66e9SKumar Gala if (!(hose->regions[r].flags & PCI_REGION_SYS_MEMORY)) 6008ab451c4SKumar Gala continue; 6018ab451c4SKumar Gala 6028ab451c4SKumar Gala bus_start = (u64)hose->regions[r].bus_start; 6038ab451c4SKumar Gala phys_start = (u64)hose->regions[r].phys_start; 6048ab451c4SKumar Gala size = (u64)hose->regions[r].size; 6058ab451c4SKumar Gala 6068ab451c4SKumar Gala dma_range[0] = 0; 607cfd700beSKumar Gala if (size >= 0x100000000ull) 6088ab451c4SKumar Gala dma_range[0] |= FDT_PCI_MEM64; 6098ab451c4SKumar Gala else 6108ab451c4SKumar Gala dma_range[0] |= FDT_PCI_MEM32; 6118ab451c4SKumar Gala if (hose->regions[r].flags & PCI_REGION_PREFETCH) 6128ab451c4SKumar Gala dma_range[0] |= FDT_PCI_PREFETCH; 6138ab451c4SKumar Gala #ifdef CONFIG_SYS_PCI_64BIT 6148ab451c4SKumar Gala dma_range[1] = bus_start >> 32; 6158ab451c4SKumar Gala #else 6168ab451c4SKumar Gala dma_range[1] = 0; 6178ab451c4SKumar Gala #endif 6188ab451c4SKumar Gala dma_range[2] = bus_start & 0xffffffff; 6198ab451c4SKumar Gala 6208ab451c4SKumar Gala if (addrcell == 2) { 6218ab451c4SKumar Gala dma_range[3] = phys_start >> 32; 6228ab451c4SKumar Gala dma_range[4] = phys_start & 0xffffffff; 6238ab451c4SKumar Gala } else { 6248ab451c4SKumar Gala dma_range[3] = phys_start & 0xffffffff; 6258ab451c4SKumar Gala } 6268ab451c4SKumar Gala 6278ab451c4SKumar Gala if (sizecell == 2) { 6288ab451c4SKumar Gala dma_range[3 + addrcell + 0] = size >> 32; 6298ab451c4SKumar Gala dma_range[3 + addrcell + 1] = size & 0xffffffff; 6308ab451c4SKumar Gala } else { 6318ab451c4SKumar Gala dma_range[3 + addrcell + 0] = size & 0xffffffff; 6328ab451c4SKumar Gala } 6338ab451c4SKumar Gala 6348ab451c4SKumar Gala dma_range += (3 + addrcell + sizecell); 6358ab451c4SKumar Gala } 6368ab451c4SKumar Gala 6378ab451c4SKumar Gala len = dma_range - &dma_ranges[0]; 6388ab451c4SKumar Gala if (len) 6398ab451c4SKumar Gala fdt_setprop(blob, phb_off, "dma-ranges", &dma_ranges[0], len*4); 6408ab451c4SKumar Gala 6418ab451c4SKumar Gala return 0; 6428ab451c4SKumar Gala } 6438ab451c4SKumar Gala #endif 64430d45c0dSStefan Roese 645cb2707afSMatthew McClintock int fdt_increase_size(void *fdt, int add_len) 646cb2707afSMatthew McClintock { 647cb2707afSMatthew McClintock int newlen; 648cb2707afSMatthew McClintock 649cb2707afSMatthew McClintock newlen = fdt_totalsize(fdt) + add_len; 650cb2707afSMatthew McClintock 651cb2707afSMatthew McClintock /* Open in place with a new len */ 652cb2707afSMatthew McClintock return fdt_open_into(fdt, fdt, newlen); 653cb2707afSMatthew McClintock } 654cb2707afSMatthew McClintock 6553c950e2eSAnatolij Gustschin #ifdef CONFIG_FDT_FIXUP_PARTITIONS 6563c950e2eSAnatolij Gustschin #include <jffs2/load_kernel.h> 6573c950e2eSAnatolij Gustschin #include <mtd_node.h> 6583c950e2eSAnatolij Gustschin 6593c950e2eSAnatolij Gustschin struct reg_cell { 6603c950e2eSAnatolij Gustschin unsigned int r0; 6613c950e2eSAnatolij Gustschin unsigned int r1; 6623c950e2eSAnatolij Gustschin }; 6633c950e2eSAnatolij Gustschin 6643c950e2eSAnatolij Gustschin int fdt_del_subnodes(const void *blob, int parent_offset) 6653c950e2eSAnatolij Gustschin { 6663c950e2eSAnatolij Gustschin int off, ndepth; 6673c950e2eSAnatolij Gustschin int ret; 6683c950e2eSAnatolij Gustschin 6693c950e2eSAnatolij Gustschin for (ndepth = 0, off = fdt_next_node(blob, parent_offset, &ndepth); 6703c950e2eSAnatolij Gustschin (off >= 0) && (ndepth > 0); 6713c950e2eSAnatolij Gustschin off = fdt_next_node(blob, off, &ndepth)) { 6723c950e2eSAnatolij Gustschin if (ndepth == 1) { 6733c950e2eSAnatolij Gustschin debug("delete %s: offset: %x\n", 6743c950e2eSAnatolij Gustschin fdt_get_name(blob, off, 0), off); 6753c950e2eSAnatolij Gustschin ret = fdt_del_node((void *)blob, off); 6763c950e2eSAnatolij Gustschin if (ret < 0) { 6773c950e2eSAnatolij Gustschin printf("Can't delete node: %s\n", 6783c950e2eSAnatolij Gustschin fdt_strerror(ret)); 6793c950e2eSAnatolij Gustschin return ret; 6803c950e2eSAnatolij Gustschin } else { 6813c950e2eSAnatolij Gustschin ndepth = 0; 6823c950e2eSAnatolij Gustschin off = parent_offset; 6833c950e2eSAnatolij Gustschin } 6843c950e2eSAnatolij Gustschin } 6853c950e2eSAnatolij Gustschin } 6863c950e2eSAnatolij Gustschin return 0; 6873c950e2eSAnatolij Gustschin } 6883c950e2eSAnatolij Gustschin 6893c950e2eSAnatolij Gustschin int fdt_del_partitions(void *blob, int parent_offset) 6903c950e2eSAnatolij Gustschin { 6913c950e2eSAnatolij Gustschin const void *prop; 6923c950e2eSAnatolij Gustschin int ndepth = 0; 6933c950e2eSAnatolij Gustschin int off; 6943c950e2eSAnatolij Gustschin int ret; 6953c950e2eSAnatolij Gustschin 6963c950e2eSAnatolij Gustschin off = fdt_next_node(blob, parent_offset, &ndepth); 6973c950e2eSAnatolij Gustschin if (off > 0 && ndepth == 1) { 6983c950e2eSAnatolij Gustschin prop = fdt_getprop(blob, off, "label", NULL); 6993c950e2eSAnatolij Gustschin if (prop == NULL) { 7003c950e2eSAnatolij Gustschin /* 7013c950e2eSAnatolij Gustschin * Could not find label property, nand {}; node? 7023c950e2eSAnatolij Gustschin * Check subnode, delete partitions there if any. 7033c950e2eSAnatolij Gustschin */ 7043c950e2eSAnatolij Gustschin return fdt_del_partitions(blob, off); 7053c950e2eSAnatolij Gustschin } else { 7063c950e2eSAnatolij Gustschin ret = fdt_del_subnodes(blob, parent_offset); 7073c950e2eSAnatolij Gustschin if (ret < 0) { 7083c950e2eSAnatolij Gustschin printf("Can't remove subnodes: %s\n", 7093c950e2eSAnatolij Gustschin fdt_strerror(ret)); 7103c950e2eSAnatolij Gustschin return ret; 7113c950e2eSAnatolij Gustschin } 7123c950e2eSAnatolij Gustschin } 7133c950e2eSAnatolij Gustschin } 7143c950e2eSAnatolij Gustschin return 0; 7153c950e2eSAnatolij Gustschin } 7163c950e2eSAnatolij Gustschin 7173c950e2eSAnatolij Gustschin int fdt_node_set_part_info(void *blob, int parent_offset, 7183c950e2eSAnatolij Gustschin struct mtd_device *dev) 7193c950e2eSAnatolij Gustschin { 7203c950e2eSAnatolij Gustschin struct list_head *pentry; 7213c950e2eSAnatolij Gustschin struct part_info *part; 7223c950e2eSAnatolij Gustschin struct reg_cell cell; 7233c950e2eSAnatolij Gustschin int off, ndepth = 0; 7243c950e2eSAnatolij Gustschin int part_num, ret; 7253c950e2eSAnatolij Gustschin char buf[64]; 7263c950e2eSAnatolij Gustschin 7273c950e2eSAnatolij Gustschin ret = fdt_del_partitions(blob, parent_offset); 7283c950e2eSAnatolij Gustschin if (ret < 0) 7293c950e2eSAnatolij Gustschin return ret; 7303c950e2eSAnatolij Gustschin 7313c950e2eSAnatolij Gustschin /* 7323c950e2eSAnatolij Gustschin * Check if it is nand {}; subnode, adjust 7333c950e2eSAnatolij Gustschin * the offset in this case 7343c950e2eSAnatolij Gustschin */ 7353c950e2eSAnatolij Gustschin off = fdt_next_node(blob, parent_offset, &ndepth); 7363c950e2eSAnatolij Gustschin if (off > 0 && ndepth == 1) 7373c950e2eSAnatolij Gustschin parent_offset = off; 7383c950e2eSAnatolij Gustschin 7393c950e2eSAnatolij Gustschin part_num = 0; 7403c950e2eSAnatolij Gustschin list_for_each_prev(pentry, &dev->parts) { 7413c950e2eSAnatolij Gustschin int newoff; 7423c950e2eSAnatolij Gustschin 7433c950e2eSAnatolij Gustschin part = list_entry(pentry, struct part_info, link); 7443c950e2eSAnatolij Gustschin 74506503f16SScott Wood debug("%2d: %-20s0x%08llx\t0x%08llx\t%d\n", 7463c950e2eSAnatolij Gustschin part_num, part->name, part->size, 7473c950e2eSAnatolij Gustschin part->offset, part->mask_flags); 7483c950e2eSAnatolij Gustschin 74906503f16SScott Wood sprintf(buf, "partition@%llx", part->offset); 7503c950e2eSAnatolij Gustschin add_sub: 7513c950e2eSAnatolij Gustschin ret = fdt_add_subnode(blob, parent_offset, buf); 7523c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 7533c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 7543c950e2eSAnatolij Gustschin if (!ret) 7553c950e2eSAnatolij Gustschin goto add_sub; 7563c950e2eSAnatolij Gustschin else 7573c950e2eSAnatolij Gustschin goto err_size; 7583c950e2eSAnatolij Gustschin } else if (ret < 0) { 7593c950e2eSAnatolij Gustschin printf("Can't add partition node: %s\n", 7603c950e2eSAnatolij Gustschin fdt_strerror(ret)); 7613c950e2eSAnatolij Gustschin return ret; 7623c950e2eSAnatolij Gustschin } 7633c950e2eSAnatolij Gustschin newoff = ret; 7643c950e2eSAnatolij Gustschin 7653c950e2eSAnatolij Gustschin /* Check MTD_WRITEABLE_CMD flag */ 7663c950e2eSAnatolij Gustschin if (part->mask_flags & 1) { 7673c950e2eSAnatolij Gustschin add_ro: 7683c950e2eSAnatolij Gustschin ret = fdt_setprop(blob, newoff, "read_only", NULL, 0); 7693c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 7703c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 7713c950e2eSAnatolij Gustschin if (!ret) 7723c950e2eSAnatolij Gustschin goto add_ro; 7733c950e2eSAnatolij Gustschin else 7743c950e2eSAnatolij Gustschin goto err_size; 7753c950e2eSAnatolij Gustschin } else if (ret < 0) 7763c950e2eSAnatolij Gustschin goto err_prop; 7773c950e2eSAnatolij Gustschin } 7783c950e2eSAnatolij Gustschin 7793c950e2eSAnatolij Gustschin cell.r0 = cpu_to_fdt32(part->offset); 7803c950e2eSAnatolij Gustschin cell.r1 = cpu_to_fdt32(part->size); 7813c950e2eSAnatolij Gustschin add_reg: 7823c950e2eSAnatolij Gustschin ret = fdt_setprop(blob, newoff, "reg", &cell, sizeof(cell)); 7833c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 7843c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 7853c950e2eSAnatolij Gustschin if (!ret) 7863c950e2eSAnatolij Gustschin goto add_reg; 7873c950e2eSAnatolij Gustschin else 7883c950e2eSAnatolij Gustschin goto err_size; 7893c950e2eSAnatolij Gustschin } else if (ret < 0) 7903c950e2eSAnatolij Gustschin goto err_prop; 7913c950e2eSAnatolij Gustschin 7923c950e2eSAnatolij Gustschin add_label: 7933c950e2eSAnatolij Gustschin ret = fdt_setprop_string(blob, newoff, "label", part->name); 7943c950e2eSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 7953c950e2eSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 7963c950e2eSAnatolij Gustschin if (!ret) 7973c950e2eSAnatolij Gustschin goto add_label; 7983c950e2eSAnatolij Gustschin else 7993c950e2eSAnatolij Gustschin goto err_size; 8003c950e2eSAnatolij Gustschin } else if (ret < 0) 8013c950e2eSAnatolij Gustschin goto err_prop; 8023c950e2eSAnatolij Gustschin 8033c950e2eSAnatolij Gustschin part_num++; 8043c950e2eSAnatolij Gustschin } 8053c950e2eSAnatolij Gustschin return 0; 8063c950e2eSAnatolij Gustschin err_size: 8073c950e2eSAnatolij Gustschin printf("Can't increase blob size: %s\n", fdt_strerror(ret)); 8083c950e2eSAnatolij Gustschin return ret; 8093c950e2eSAnatolij Gustschin err_prop: 8103c950e2eSAnatolij Gustschin printf("Can't add property: %s\n", fdt_strerror(ret)); 8113c950e2eSAnatolij Gustschin return ret; 8123c950e2eSAnatolij Gustschin } 8133c950e2eSAnatolij Gustschin 8143c950e2eSAnatolij Gustschin /* 8153c950e2eSAnatolij Gustschin * Update partitions in nor/nand nodes using info from 8163c950e2eSAnatolij Gustschin * mtdparts environment variable. The nodes to update are 8173c950e2eSAnatolij Gustschin * specified by node_info structure which contains mtd device 8183c950e2eSAnatolij Gustschin * type and compatible string: E. g. the board code in 8193c950e2eSAnatolij Gustschin * ft_board_setup() could use: 8203c950e2eSAnatolij Gustschin * 8213c950e2eSAnatolij Gustschin * struct node_info nodes[] = { 8223c950e2eSAnatolij Gustschin * { "fsl,mpc5121-nfc", MTD_DEV_TYPE_NAND, }, 8233c950e2eSAnatolij Gustschin * { "cfi-flash", MTD_DEV_TYPE_NOR, }, 8243c950e2eSAnatolij Gustschin * }; 8253c950e2eSAnatolij Gustschin * 8263c950e2eSAnatolij Gustschin * fdt_fixup_mtdparts(blob, nodes, ARRAY_SIZE(nodes)); 8273c950e2eSAnatolij Gustschin */ 8283c950e2eSAnatolij Gustschin void fdt_fixup_mtdparts(void *blob, void *node_info, int node_info_size) 8293c950e2eSAnatolij Gustschin { 8303c950e2eSAnatolij Gustschin struct node_info *ni = node_info; 8313c950e2eSAnatolij Gustschin struct mtd_device *dev; 8323c950e2eSAnatolij Gustschin int i, idx; 8333c950e2eSAnatolij Gustschin int noff; 8343c950e2eSAnatolij Gustschin 8353c950e2eSAnatolij Gustschin if (mtdparts_init() != 0) 8363c950e2eSAnatolij Gustschin return; 8373c950e2eSAnatolij Gustschin 8383c950e2eSAnatolij Gustschin for (i = 0; i < node_info_size; i++) { 8393c950e2eSAnatolij Gustschin idx = 0; 8403c950e2eSAnatolij Gustschin noff = fdt_node_offset_by_compatible(blob, -1, ni[i].compat); 8413c950e2eSAnatolij Gustschin while (noff != -FDT_ERR_NOTFOUND) { 8423c950e2eSAnatolij Gustschin debug("%s: %s, mtd dev type %d\n", 8433c950e2eSAnatolij Gustschin fdt_get_name(blob, noff, 0), 8443c950e2eSAnatolij Gustschin ni[i].compat, ni[i].type); 8453c950e2eSAnatolij Gustschin dev = device_find(ni[i].type, idx++); 8463c950e2eSAnatolij Gustschin if (dev) { 8473c950e2eSAnatolij Gustschin if (fdt_node_set_part_info(blob, noff, dev)) 8483c950e2eSAnatolij Gustschin return; /* return on error */ 8493c950e2eSAnatolij Gustschin } 8503c950e2eSAnatolij Gustschin 8513c950e2eSAnatolij Gustschin /* Jump to next flash node */ 8523c950e2eSAnatolij Gustschin noff = fdt_node_offset_by_compatible(blob, noff, 8533c950e2eSAnatolij Gustschin ni[i].compat); 8543c950e2eSAnatolij Gustschin } 8553c950e2eSAnatolij Gustschin } 8563c950e2eSAnatolij Gustschin } 8573c950e2eSAnatolij Gustschin #endif 85849b97d9cSKumar Gala 85949b97d9cSKumar Gala void fdt_del_node_and_alias(void *blob, const char *alias) 86049b97d9cSKumar Gala { 86149b97d9cSKumar Gala int off = fdt_path_offset(blob, alias); 86249b97d9cSKumar Gala 86349b97d9cSKumar Gala if (off < 0) 86449b97d9cSKumar Gala return; 86549b97d9cSKumar Gala 86649b97d9cSKumar Gala fdt_del_node(blob, off); 86749b97d9cSKumar Gala 86849b97d9cSKumar Gala off = fdt_path_offset(blob, "/aliases"); 86949b97d9cSKumar Gala fdt_delprop(blob, off, alias); 87049b97d9cSKumar Gala } 871a0342c08SKumar Gala 872a0342c08SKumar Gala /* Max address size we deal with */ 873a0342c08SKumar Gala #define OF_MAX_ADDR_CELLS 4 874a0ae380bSBin Meng #define OF_BAD_ADDR FDT_ADDR_T_NONE 8754428f3c8SPrzemyslaw Marczak #define OF_CHECK_COUNTS(na, ns) ((na) > 0 && (na) <= OF_MAX_ADDR_CELLS && \ 8764428f3c8SPrzemyslaw Marczak (ns) > 0) 877a0342c08SKumar Gala 878a0342c08SKumar Gala /* Debug utility */ 879a0342c08SKumar Gala #ifdef DEBUG 8808aa5ec6eSKim Phillips static void of_dump_addr(const char *s, const fdt32_t *addr, int na) 881a0342c08SKumar Gala { 882a0342c08SKumar Gala printf("%s", s); 883a0342c08SKumar Gala while(na--) 884a0342c08SKumar Gala printf(" %08x", *(addr++)); 885a0342c08SKumar Gala printf("\n"); 886a0342c08SKumar Gala } 887a0342c08SKumar Gala #else 8888aa5ec6eSKim Phillips static void of_dump_addr(const char *s, const fdt32_t *addr, int na) { } 889a0342c08SKumar Gala #endif 890a0342c08SKumar Gala 8910a222d53SPaul Burton /** 8920a222d53SPaul Burton * struct of_bus - Callbacks for bus specific translators 89349717b18SPaul Burton * @name: A string used to identify this bus in debug output. 89449717b18SPaul Burton * @addresses: The name of the DT property from which addresses are 89549717b18SPaul Burton * to be read, typically "reg". 8960a222d53SPaul Burton * @match: Return non-zero if the node whose parent is at 8970a222d53SPaul Burton * parentoffset in the FDT blob corresponds to a bus 8980a222d53SPaul Burton * of this type, otherwise return zero. If NULL a match 8990a222d53SPaul Burton * is assumed. 90049717b18SPaul Burton * @count_cells:Count how many cells (be32 values) a node whose parent 90149717b18SPaul Burton * is at parentoffset in the FDT blob will require to 90249717b18SPaul Burton * represent its address (written to *addrc) & size 90349717b18SPaul Burton * (written to *sizec). 90449717b18SPaul Burton * @map: Map the address addr from the address space of this 90549717b18SPaul Burton * bus to that of its parent, making use of the ranges 90649717b18SPaul Burton * read from DT to an array at range. na and ns are the 90749717b18SPaul Burton * number of cells (be32 values) used to hold and address 90849717b18SPaul Burton * or size, respectively, for this bus. pna is the number 90949717b18SPaul Burton * of cells used to hold an address for the parent bus. 91049717b18SPaul Burton * Returns the address in the address space of the parent 91149717b18SPaul Burton * bus. 91249717b18SPaul Burton * @translate: Update the value of the address cells at addr within an 91349717b18SPaul Burton * FDT by adding offset to it. na specifies the number of 91449717b18SPaul Burton * cells used to hold the address being translated. Returns 91549717b18SPaul Burton * zero on success, non-zero on error. 9160a222d53SPaul Burton * 9170a222d53SPaul Burton * Each bus type will include a struct of_bus in the of_busses array, 9180a222d53SPaul Burton * providing implementations of some or all of the functions used to 9190a222d53SPaul Burton * match the bus & handle address translation for its children. 9200a222d53SPaul Burton */ 921a0342c08SKumar Gala struct of_bus { 922a0342c08SKumar Gala const char *name; 923a0342c08SKumar Gala const char *addresses; 92411e44fc6SStephen Warren int (*match)(const void *blob, int parentoffset); 92511e44fc6SStephen Warren void (*count_cells)(const void *blob, int parentoffset, 926a0342c08SKumar Gala int *addrc, int *sizec); 9278aa5ec6eSKim Phillips u64 (*map)(fdt32_t *addr, const fdt32_t *range, 928a0342c08SKumar Gala int na, int ns, int pna); 9298aa5ec6eSKim Phillips int (*translate)(fdt32_t *addr, u64 offset, int na); 930a0342c08SKumar Gala }; 931a0342c08SKumar Gala 932a0342c08SKumar Gala /* Default translator (generic bus) */ 933eed36609SSimon Glass void fdt_support_default_count_cells(const void *blob, int parentoffset, 934a0342c08SKumar Gala int *addrc, int *sizec) 935a0342c08SKumar Gala { 9368aa5ec6eSKim Phillips const fdt32_t *prop; 9376395f318SScott Wood 938933cdbb4SSimon Glass if (addrc) 939933cdbb4SSimon Glass *addrc = fdt_address_cells(blob, parentoffset); 9406395f318SScott Wood 9416395f318SScott Wood if (sizec) { 9426395f318SScott Wood prop = fdt_getprop(blob, parentoffset, "#size-cells", NULL); 9436395f318SScott Wood if (prop) 9448aa5ec6eSKim Phillips *sizec = be32_to_cpup(prop); 9456395f318SScott Wood else 9466395f318SScott Wood *sizec = 1; 9476395f318SScott Wood } 948a0342c08SKumar Gala } 949a0342c08SKumar Gala 9508aa5ec6eSKim Phillips static u64 of_bus_default_map(fdt32_t *addr, const fdt32_t *range, 951a0342c08SKumar Gala int na, int ns, int pna) 952a0342c08SKumar Gala { 953a0342c08SKumar Gala u64 cp, s, da; 954a0342c08SKumar Gala 955eed36609SSimon Glass cp = fdt_read_number(range, na); 956eed36609SSimon Glass s = fdt_read_number(range + na + pna, ns); 957eed36609SSimon Glass da = fdt_read_number(addr, na); 958a0342c08SKumar Gala 959e48f3741SSimon Glass debug("OF: default map, cp=%" PRIu64 ", s=%" PRIu64 960e48f3741SSimon Glass ", da=%" PRIu64 "\n", cp, s, da); 961a0342c08SKumar Gala 962a0342c08SKumar Gala if (da < cp || da >= (cp + s)) 963a0342c08SKumar Gala return OF_BAD_ADDR; 964a0342c08SKumar Gala return da - cp; 965a0342c08SKumar Gala } 966a0342c08SKumar Gala 9678aa5ec6eSKim Phillips static int of_bus_default_translate(fdt32_t *addr, u64 offset, int na) 968a0342c08SKumar Gala { 969eed36609SSimon Glass u64 a = fdt_read_number(addr, na); 970a0342c08SKumar Gala memset(addr, 0, na * 4); 971a0342c08SKumar Gala a += offset; 972a0342c08SKumar Gala if (na > 1) 9738aa5ec6eSKim Phillips addr[na - 2] = cpu_to_fdt32(a >> 32); 9748aa5ec6eSKim Phillips addr[na - 1] = cpu_to_fdt32(a & 0xffffffffu); 975a0342c08SKumar Gala 976a0342c08SKumar Gala return 0; 977a0342c08SKumar Gala } 978a0342c08SKumar Gala 9790a222d53SPaul Burton #ifdef CONFIG_OF_ISA_BUS 9800a222d53SPaul Burton 9810a222d53SPaul Burton /* ISA bus translator */ 98211e44fc6SStephen Warren static int of_bus_isa_match(const void *blob, int parentoffset) 9830a222d53SPaul Burton { 9840a222d53SPaul Burton const char *name; 9850a222d53SPaul Burton 9860a222d53SPaul Burton name = fdt_get_name(blob, parentoffset, NULL); 9870a222d53SPaul Burton if (!name) 9880a222d53SPaul Burton return 0; 9890a222d53SPaul Burton 9900a222d53SPaul Burton return !strcmp(name, "isa"); 9910a222d53SPaul Burton } 9920a222d53SPaul Burton 99311e44fc6SStephen Warren static void of_bus_isa_count_cells(const void *blob, int parentoffset, 9940a222d53SPaul Burton int *addrc, int *sizec) 9950a222d53SPaul Burton { 9960a222d53SPaul Burton if (addrc) 9970a222d53SPaul Burton *addrc = 2; 9980a222d53SPaul Burton if (sizec) 9990a222d53SPaul Burton *sizec = 1; 10000a222d53SPaul Burton } 10010a222d53SPaul Burton 10020a222d53SPaul Burton static u64 of_bus_isa_map(fdt32_t *addr, const fdt32_t *range, 10030a222d53SPaul Burton int na, int ns, int pna) 10040a222d53SPaul Burton { 10050a222d53SPaul Burton u64 cp, s, da; 10060a222d53SPaul Burton 10070a222d53SPaul Burton /* Check address type match */ 10080a222d53SPaul Burton if ((addr[0] ^ range[0]) & cpu_to_be32(1)) 10090a222d53SPaul Burton return OF_BAD_ADDR; 10100a222d53SPaul Burton 1011eed36609SSimon Glass cp = fdt_read_number(range + 1, na - 1); 1012eed36609SSimon Glass s = fdt_read_number(range + na + pna, ns); 1013eed36609SSimon Glass da = fdt_read_number(addr + 1, na - 1); 10140a222d53SPaul Burton 10150a222d53SPaul Burton debug("OF: ISA map, cp=%" PRIu64 ", s=%" PRIu64 10160a222d53SPaul Burton ", da=%" PRIu64 "\n", cp, s, da); 10170a222d53SPaul Burton 10180a222d53SPaul Burton if (da < cp || da >= (cp + s)) 10190a222d53SPaul Burton return OF_BAD_ADDR; 10200a222d53SPaul Burton return da - cp; 10210a222d53SPaul Burton } 10220a222d53SPaul Burton 10230a222d53SPaul Burton static int of_bus_isa_translate(fdt32_t *addr, u64 offset, int na) 10240a222d53SPaul Burton { 10250a222d53SPaul Burton return of_bus_default_translate(addr + 1, offset, na - 1); 10260a222d53SPaul Burton } 10270a222d53SPaul Burton 10280a222d53SPaul Burton #endif /* CONFIG_OF_ISA_BUS */ 10290a222d53SPaul Burton 1030a0342c08SKumar Gala /* Array of bus specific translators */ 1031a0342c08SKumar Gala static struct of_bus of_busses[] = { 10320a222d53SPaul Burton #ifdef CONFIG_OF_ISA_BUS 10330a222d53SPaul Burton /* ISA */ 10340a222d53SPaul Burton { 10350a222d53SPaul Burton .name = "isa", 10360a222d53SPaul Burton .addresses = "reg", 10370a222d53SPaul Burton .match = of_bus_isa_match, 10380a222d53SPaul Burton .count_cells = of_bus_isa_count_cells, 10390a222d53SPaul Burton .map = of_bus_isa_map, 10400a222d53SPaul Burton .translate = of_bus_isa_translate, 10410a222d53SPaul Burton }, 10420a222d53SPaul Burton #endif /* CONFIG_OF_ISA_BUS */ 1043a0342c08SKumar Gala /* Default */ 1044a0342c08SKumar Gala { 1045a0342c08SKumar Gala .name = "default", 1046a0342c08SKumar Gala .addresses = "reg", 1047eed36609SSimon Glass .count_cells = fdt_support_default_count_cells, 1048a0342c08SKumar Gala .map = of_bus_default_map, 1049a0342c08SKumar Gala .translate = of_bus_default_translate, 1050a0342c08SKumar Gala }, 1051a0342c08SKumar Gala }; 1052a0342c08SKumar Gala 105311e44fc6SStephen Warren static struct of_bus *of_match_bus(const void *blob, int parentoffset) 10540a222d53SPaul Burton { 10550a222d53SPaul Burton struct of_bus *bus; 10560a222d53SPaul Burton 10570a222d53SPaul Burton if (ARRAY_SIZE(of_busses) == 1) 10580a222d53SPaul Burton return of_busses; 10590a222d53SPaul Burton 10600a222d53SPaul Burton for (bus = of_busses; bus; bus++) { 10610a222d53SPaul Burton if (!bus->match || bus->match(blob, parentoffset)) 10620a222d53SPaul Burton return bus; 10630a222d53SPaul Burton } 10640a222d53SPaul Burton 10650a222d53SPaul Burton /* 10660a222d53SPaul Burton * We should always have matched the default bus at least, since 10670a222d53SPaul Burton * it has a NULL match field. If we didn't then it somehow isn't 10680a222d53SPaul Burton * in the of_busses array or something equally catastrophic has 10690a222d53SPaul Burton * gone wrong. 10700a222d53SPaul Burton */ 10710a222d53SPaul Burton assert(0); 10720a222d53SPaul Burton return NULL; 10730a222d53SPaul Burton } 10740a222d53SPaul Burton 107511e44fc6SStephen Warren static int of_translate_one(const void *blob, int parent, struct of_bus *bus, 10768aa5ec6eSKim Phillips struct of_bus *pbus, fdt32_t *addr, 1077a0342c08SKumar Gala int na, int ns, int pna, const char *rprop) 1078a0342c08SKumar Gala { 10798aa5ec6eSKim Phillips const fdt32_t *ranges; 1080a0342c08SKumar Gala int rlen; 1081a0342c08SKumar Gala int rone; 1082a0342c08SKumar Gala u64 offset = OF_BAD_ADDR; 1083a0342c08SKumar Gala 1084a0342c08SKumar Gala /* Normally, an absence of a "ranges" property means we are 1085a0342c08SKumar Gala * crossing a non-translatable boundary, and thus the addresses 1086a0342c08SKumar Gala * below the current not cannot be converted to CPU physical ones. 1087a0342c08SKumar Gala * Unfortunately, while this is very clear in the spec, it's not 1088a0342c08SKumar Gala * what Apple understood, and they do have things like /uni-n or 1089a0342c08SKumar Gala * /ht nodes with no "ranges" property and a lot of perfectly 1090a0342c08SKumar Gala * useable mapped devices below them. Thus we treat the absence of 1091a0342c08SKumar Gala * "ranges" as equivalent to an empty "ranges" property which means 1092a0342c08SKumar Gala * a 1:1 translation at that level. It's up to the caller not to try 1093a0342c08SKumar Gala * to translate addresses that aren't supposed to be translated in 1094a0342c08SKumar Gala * the first place. --BenH. 1095a0342c08SKumar Gala */ 10968aa5ec6eSKim Phillips ranges = fdt_getprop(blob, parent, rprop, &rlen); 1097a0342c08SKumar Gala if (ranges == NULL || rlen == 0) { 1098eed36609SSimon Glass offset = fdt_read_number(addr, na); 1099a0342c08SKumar Gala memset(addr, 0, pna * 4); 1100a0342c08SKumar Gala debug("OF: no ranges, 1:1 translation\n"); 1101a0342c08SKumar Gala goto finish; 1102a0342c08SKumar Gala } 1103a0342c08SKumar Gala 1104a0342c08SKumar Gala debug("OF: walking ranges...\n"); 1105a0342c08SKumar Gala 1106a0342c08SKumar Gala /* Now walk through the ranges */ 1107a0342c08SKumar Gala rlen /= 4; 1108a0342c08SKumar Gala rone = na + pna + ns; 1109a0342c08SKumar Gala for (; rlen >= rone; rlen -= rone, ranges += rone) { 1110a0342c08SKumar Gala offset = bus->map(addr, ranges, na, ns, pna); 1111a0342c08SKumar Gala if (offset != OF_BAD_ADDR) 1112a0342c08SKumar Gala break; 1113a0342c08SKumar Gala } 1114a0342c08SKumar Gala if (offset == OF_BAD_ADDR) { 1115a0342c08SKumar Gala debug("OF: not found !\n"); 1116a0342c08SKumar Gala return 1; 1117a0342c08SKumar Gala } 1118a0342c08SKumar Gala memcpy(addr, ranges + na, 4 * pna); 1119a0342c08SKumar Gala 1120a0342c08SKumar Gala finish: 1121a0342c08SKumar Gala of_dump_addr("OF: parent translation for:", addr, pna); 1122e48f3741SSimon Glass debug("OF: with offset: %" PRIu64 "\n", offset); 1123a0342c08SKumar Gala 1124a0342c08SKumar Gala /* Translate it into parent bus space */ 1125a0342c08SKumar Gala return pbus->translate(addr, offset, pna); 1126a0342c08SKumar Gala } 1127a0342c08SKumar Gala 1128a0342c08SKumar Gala /* 1129a0342c08SKumar Gala * Translate an address from the device-tree into a CPU physical address, 1130a0342c08SKumar Gala * this walks up the tree and applies the various bus mappings on the 1131a0342c08SKumar Gala * way. 1132a0342c08SKumar Gala * 1133a0342c08SKumar Gala * Note: We consider that crossing any level with #size-cells == 0 to mean 1134a0342c08SKumar Gala * that translation is impossible (that is we are not dealing with a value 1135a0342c08SKumar Gala * that can be mapped to a cpu physical address). This is not really specified 1136a0342c08SKumar Gala * that way, but this is traditionally the way IBM at least do things 1137a0342c08SKumar Gala */ 113811e44fc6SStephen Warren static u64 __of_translate_address(const void *blob, int node_offset, 113911e44fc6SStephen Warren const fdt32_t *in_addr, const char *rprop) 1140a0342c08SKumar Gala { 1141a0342c08SKumar Gala int parent; 1142a0342c08SKumar Gala struct of_bus *bus, *pbus; 11438aa5ec6eSKim Phillips fdt32_t addr[OF_MAX_ADDR_CELLS]; 1144a0342c08SKumar Gala int na, ns, pna, pns; 1145a0342c08SKumar Gala u64 result = OF_BAD_ADDR; 1146a0342c08SKumar Gala 1147a0342c08SKumar Gala debug("OF: ** translation for device %s **\n", 1148a0342c08SKumar Gala fdt_get_name(blob, node_offset, NULL)); 1149a0342c08SKumar Gala 1150a0342c08SKumar Gala /* Get parent & match bus type */ 1151a0342c08SKumar Gala parent = fdt_parent_offset(blob, node_offset); 1152a0342c08SKumar Gala if (parent < 0) 1153a0342c08SKumar Gala goto bail; 11540a222d53SPaul Burton bus = of_match_bus(blob, parent); 1155a0342c08SKumar Gala 1156a0342c08SKumar Gala /* Cound address cells & copy address locally */ 11576395f318SScott Wood bus->count_cells(blob, parent, &na, &ns); 11584428f3c8SPrzemyslaw Marczak if (!OF_CHECK_COUNTS(na, ns)) { 1159a0342c08SKumar Gala printf("%s: Bad cell count for %s\n", __FUNCTION__, 1160a0342c08SKumar Gala fdt_get_name(blob, node_offset, NULL)); 1161a0342c08SKumar Gala goto bail; 1162a0342c08SKumar Gala } 1163a0342c08SKumar Gala memcpy(addr, in_addr, na * 4); 1164a0342c08SKumar Gala 1165a0342c08SKumar Gala debug("OF: bus is %s (na=%d, ns=%d) on %s\n", 1166a0342c08SKumar Gala bus->name, na, ns, fdt_get_name(blob, parent, NULL)); 1167a0342c08SKumar Gala of_dump_addr("OF: translating address:", addr, na); 1168a0342c08SKumar Gala 1169a0342c08SKumar Gala /* Translate */ 1170a0342c08SKumar Gala for (;;) { 1171a0342c08SKumar Gala /* Switch to parent bus */ 1172a0342c08SKumar Gala node_offset = parent; 1173a0342c08SKumar Gala parent = fdt_parent_offset(blob, node_offset); 1174a0342c08SKumar Gala 1175a0342c08SKumar Gala /* If root, we have finished */ 1176a0342c08SKumar Gala if (parent < 0) { 1177a0342c08SKumar Gala debug("OF: reached root node\n"); 1178eed36609SSimon Glass result = fdt_read_number(addr, na); 1179a0342c08SKumar Gala break; 1180a0342c08SKumar Gala } 1181a0342c08SKumar Gala 1182a0342c08SKumar Gala /* Get new parent bus and counts */ 11830a222d53SPaul Burton pbus = of_match_bus(blob, parent); 11846395f318SScott Wood pbus->count_cells(blob, parent, &pna, &pns); 11854428f3c8SPrzemyslaw Marczak if (!OF_CHECK_COUNTS(pna, pns)) { 1186a0342c08SKumar Gala printf("%s: Bad cell count for %s\n", __FUNCTION__, 1187a0342c08SKumar Gala fdt_get_name(blob, node_offset, NULL)); 1188a0342c08SKumar Gala break; 1189a0342c08SKumar Gala } 1190a0342c08SKumar Gala 1191a0342c08SKumar Gala debug("OF: parent bus is %s (na=%d, ns=%d) on %s\n", 1192a0342c08SKumar Gala pbus->name, pna, pns, fdt_get_name(blob, parent, NULL)); 1193a0342c08SKumar Gala 1194a0342c08SKumar Gala /* Apply bus translation */ 1195a0342c08SKumar Gala if (of_translate_one(blob, node_offset, bus, pbus, 1196a0342c08SKumar Gala addr, na, ns, pna, rprop)) 1197a0342c08SKumar Gala break; 1198a0342c08SKumar Gala 1199a0342c08SKumar Gala /* Complete the move up one level */ 1200a0342c08SKumar Gala na = pna; 1201a0342c08SKumar Gala ns = pns; 1202a0342c08SKumar Gala bus = pbus; 1203a0342c08SKumar Gala 1204a0342c08SKumar Gala of_dump_addr("OF: one level translation:", addr, na); 1205a0342c08SKumar Gala } 1206a0342c08SKumar Gala bail: 1207a0342c08SKumar Gala 1208a0342c08SKumar Gala return result; 1209a0342c08SKumar Gala } 1210a0342c08SKumar Gala 121111e44fc6SStephen Warren u64 fdt_translate_address(const void *blob, int node_offset, 121211e44fc6SStephen Warren const fdt32_t *in_addr) 1213a0342c08SKumar Gala { 1214a0342c08SKumar Gala return __of_translate_address(blob, node_offset, in_addr, "ranges"); 1215a0342c08SKumar Gala } 121675e73afdSKumar Gala 121775e73afdSKumar Gala /** 121875e73afdSKumar Gala * fdt_node_offset_by_compat_reg: Find a node that matches compatiable and 121975e73afdSKumar Gala * who's reg property matches a physical cpu address 122075e73afdSKumar Gala * 122175e73afdSKumar Gala * @blob: ptr to device tree 122275e73afdSKumar Gala * @compat: compatiable string to match 122375e73afdSKumar Gala * @compat_off: property name 122475e73afdSKumar Gala * 122575e73afdSKumar Gala */ 122675e73afdSKumar Gala int fdt_node_offset_by_compat_reg(void *blob, const char *compat, 122775e73afdSKumar Gala phys_addr_t compat_off) 122875e73afdSKumar Gala { 122975e73afdSKumar Gala int len, off = fdt_node_offset_by_compatible(blob, -1, compat); 123075e73afdSKumar Gala while (off != -FDT_ERR_NOTFOUND) { 12318aa5ec6eSKim Phillips const fdt32_t *reg = fdt_getprop(blob, off, "reg", &len); 123275e73afdSKumar Gala if (reg) { 123375e73afdSKumar Gala if (compat_off == fdt_translate_address(blob, off, reg)) 123475e73afdSKumar Gala return off; 123575e73afdSKumar Gala } 123675e73afdSKumar Gala off = fdt_node_offset_by_compatible(blob, off, compat); 123775e73afdSKumar Gala } 123875e73afdSKumar Gala 123975e73afdSKumar Gala return -FDT_ERR_NOTFOUND; 124075e73afdSKumar Gala } 124175e73afdSKumar Gala 1242b4b847e9SKumar Gala /** 1243b4b847e9SKumar Gala * fdt_alloc_phandle: Return next free phandle value 1244b4b847e9SKumar Gala * 1245b4b847e9SKumar Gala * @blob: ptr to device tree 1246b4b847e9SKumar Gala */ 1247b4b847e9SKumar Gala int fdt_alloc_phandle(void *blob) 1248b4b847e9SKumar Gala { 1249b4141195SMasahiro Yamada int offset; 1250b4141195SMasahiro Yamada uint32_t phandle = 0; 125175e73afdSKumar Gala 1252b4b847e9SKumar Gala for (offset = fdt_next_node(blob, -1, NULL); offset >= 0; 1253b4b847e9SKumar Gala offset = fdt_next_node(blob, offset, NULL)) { 125450bf17bdSTimur Tabi phandle = max(phandle, fdt_get_phandle(blob, offset)); 1255b4b847e9SKumar Gala } 1256b4b847e9SKumar Gala 1257b4b847e9SKumar Gala return phandle + 1; 1258b4b847e9SKumar Gala } 1259beca5a5fSAnatolij Gustschin 1260a8d2a75dSGerald Van Baren /* 1261f117c0f0SKumar Gala * fdt_set_phandle: Create a phandle property for the given node 1262a8d2a75dSGerald Van Baren * 1263a8d2a75dSGerald Van Baren * @fdt: ptr to device tree 1264a8d2a75dSGerald Van Baren * @nodeoffset: node to update 1265a8d2a75dSGerald Van Baren * @phandle: phandle value to set (must be unique) 1266a8d2a75dSGerald Van Baren */ 1267f117c0f0SKumar Gala int fdt_set_phandle(void *fdt, int nodeoffset, uint32_t phandle) 1268a8d2a75dSGerald Van Baren { 1269a8d2a75dSGerald Van Baren int ret; 1270a8d2a75dSGerald Van Baren 1271a8d2a75dSGerald Van Baren #ifdef DEBUG 1272a8d2a75dSGerald Van Baren int off = fdt_node_offset_by_phandle(fdt, phandle); 1273a8d2a75dSGerald Van Baren 1274a8d2a75dSGerald Van Baren if ((off >= 0) && (off != nodeoffset)) { 1275a8d2a75dSGerald Van Baren char buf[64]; 1276a8d2a75dSGerald Van Baren 1277a8d2a75dSGerald Van Baren fdt_get_path(fdt, nodeoffset, buf, sizeof(buf)); 1278a8d2a75dSGerald Van Baren printf("Trying to update node %s with phandle %u ", 1279a8d2a75dSGerald Van Baren buf, phandle); 1280a8d2a75dSGerald Van Baren 1281a8d2a75dSGerald Van Baren fdt_get_path(fdt, off, buf, sizeof(buf)); 1282a8d2a75dSGerald Van Baren printf("that already exists in node %s.\n", buf); 1283a8d2a75dSGerald Van Baren return -FDT_ERR_BADPHANDLE; 1284a8d2a75dSGerald Van Baren } 1285a8d2a75dSGerald Van Baren #endif 1286a8d2a75dSGerald Van Baren 1287a8d2a75dSGerald Van Baren ret = fdt_setprop_cell(fdt, nodeoffset, "phandle", phandle); 1288a8d2a75dSGerald Van Baren if (ret < 0) 1289a8d2a75dSGerald Van Baren return ret; 1290a8d2a75dSGerald Van Baren 1291a8d2a75dSGerald Van Baren /* 1292a8d2a75dSGerald Van Baren * For now, also set the deprecated "linux,phandle" property, so that we 1293a8d2a75dSGerald Van Baren * don't break older kernels. 1294a8d2a75dSGerald Van Baren */ 1295a8d2a75dSGerald Van Baren ret = fdt_setprop_cell(fdt, nodeoffset, "linux,phandle", phandle); 1296a8d2a75dSGerald Van Baren 1297a8d2a75dSGerald Van Baren return ret; 1298a8d2a75dSGerald Van Baren } 1299a8d2a75dSGerald Van Baren 130010aeabd1SKumar Gala /* 130110aeabd1SKumar Gala * fdt_create_phandle: Create a phandle property for the given node 130210aeabd1SKumar Gala * 130310aeabd1SKumar Gala * @fdt: ptr to device tree 130410aeabd1SKumar Gala * @nodeoffset: node to update 130510aeabd1SKumar Gala */ 13063c927cccSTimur Tabi unsigned int fdt_create_phandle(void *fdt, int nodeoffset) 130710aeabd1SKumar Gala { 130810aeabd1SKumar Gala /* see if there is a phandle already */ 130910aeabd1SKumar Gala int phandle = fdt_get_phandle(fdt, nodeoffset); 131010aeabd1SKumar Gala 131110aeabd1SKumar Gala /* if we got 0, means no phandle so create one */ 131210aeabd1SKumar Gala if (phandle == 0) { 13133c927cccSTimur Tabi int ret; 13143c927cccSTimur Tabi 131510aeabd1SKumar Gala phandle = fdt_alloc_phandle(fdt); 13163c927cccSTimur Tabi ret = fdt_set_phandle(fdt, nodeoffset, phandle); 13173c927cccSTimur Tabi if (ret < 0) { 13183c927cccSTimur Tabi printf("Can't set phandle %u: %s\n", phandle, 13193c927cccSTimur Tabi fdt_strerror(ret)); 13203c927cccSTimur Tabi return 0; 13213c927cccSTimur Tabi } 132210aeabd1SKumar Gala } 132310aeabd1SKumar Gala 132410aeabd1SKumar Gala return phandle; 132510aeabd1SKumar Gala } 132610aeabd1SKumar Gala 13272a523f52SShengzhou Liu /* 13282a523f52SShengzhou Liu * fdt_set_node_status: Set status for the given node 13292a523f52SShengzhou Liu * 13302a523f52SShengzhou Liu * @fdt: ptr to device tree 13312a523f52SShengzhou Liu * @nodeoffset: node to update 13322a523f52SShengzhou Liu * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, 13332a523f52SShengzhou Liu * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE 13342a523f52SShengzhou Liu * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE 13352a523f52SShengzhou Liu */ 13362a523f52SShengzhou Liu int fdt_set_node_status(void *fdt, int nodeoffset, 13372a523f52SShengzhou Liu enum fdt_status status, unsigned int error_code) 13382a523f52SShengzhou Liu { 13392a523f52SShengzhou Liu char buf[16]; 13402a523f52SShengzhou Liu int ret = 0; 13412a523f52SShengzhou Liu 13422a523f52SShengzhou Liu if (nodeoffset < 0) 13432a523f52SShengzhou Liu return nodeoffset; 13442a523f52SShengzhou Liu 13452a523f52SShengzhou Liu switch (status) { 13462a523f52SShengzhou Liu case FDT_STATUS_OKAY: 13472a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", "okay"); 13482a523f52SShengzhou Liu break; 13492a523f52SShengzhou Liu case FDT_STATUS_DISABLED: 13502a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", "disabled"); 13512a523f52SShengzhou Liu break; 13522a523f52SShengzhou Liu case FDT_STATUS_FAIL: 13532a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", "fail"); 13542a523f52SShengzhou Liu break; 13552a523f52SShengzhou Liu case FDT_STATUS_FAIL_ERROR_CODE: 13562a523f52SShengzhou Liu sprintf(buf, "fail-%d", error_code); 13572a523f52SShengzhou Liu ret = fdt_setprop_string(fdt, nodeoffset, "status", buf); 13582a523f52SShengzhou Liu break; 13592a523f52SShengzhou Liu default: 13602a523f52SShengzhou Liu printf("Invalid fdt status: %x\n", status); 13612a523f52SShengzhou Liu ret = -1; 13622a523f52SShengzhou Liu break; 13632a523f52SShengzhou Liu } 13642a523f52SShengzhou Liu 13652a523f52SShengzhou Liu return ret; 13662a523f52SShengzhou Liu } 13672a523f52SShengzhou Liu 13682a523f52SShengzhou Liu /* 13692a523f52SShengzhou Liu * fdt_set_status_by_alias: Set status for the given node given an alias 13702a523f52SShengzhou Liu * 13712a523f52SShengzhou Liu * @fdt: ptr to device tree 13722a523f52SShengzhou Liu * @alias: alias of node to update 13732a523f52SShengzhou Liu * @status: FDT_STATUS_OKAY, FDT_STATUS_DISABLED, 13742a523f52SShengzhou Liu * FDT_STATUS_FAIL, FDT_STATUS_FAIL_ERROR_CODE 13752a523f52SShengzhou Liu * @error_code: optional, only used if status is FDT_STATUS_FAIL_ERROR_CODE 13762a523f52SShengzhou Liu */ 13772a523f52SShengzhou Liu int fdt_set_status_by_alias(void *fdt, const char* alias, 13782a523f52SShengzhou Liu enum fdt_status status, unsigned int error_code) 13792a523f52SShengzhou Liu { 13802a523f52SShengzhou Liu int offset = fdt_path_offset(fdt, alias); 13812a523f52SShengzhou Liu 13822a523f52SShengzhou Liu return fdt_set_node_status(fdt, offset, status, error_code); 13832a523f52SShengzhou Liu } 13842a523f52SShengzhou Liu 1385096eb3f5STom Wai-Hong Tam #if defined(CONFIG_VIDEO) || defined(CONFIG_LCD) 1386beca5a5fSAnatolij Gustschin int fdt_add_edid(void *blob, const char *compat, unsigned char *edid_buf) 1387beca5a5fSAnatolij Gustschin { 1388beca5a5fSAnatolij Gustschin int noff; 1389beca5a5fSAnatolij Gustschin int ret; 1390beca5a5fSAnatolij Gustschin 1391beca5a5fSAnatolij Gustschin noff = fdt_node_offset_by_compatible(blob, -1, compat); 1392beca5a5fSAnatolij Gustschin if (noff != -FDT_ERR_NOTFOUND) { 1393beca5a5fSAnatolij Gustschin debug("%s: %s\n", fdt_get_name(blob, noff, 0), compat); 1394beca5a5fSAnatolij Gustschin add_edid: 1395beca5a5fSAnatolij Gustschin ret = fdt_setprop(blob, noff, "edid", edid_buf, 128); 1396beca5a5fSAnatolij Gustschin if (ret == -FDT_ERR_NOSPACE) { 1397beca5a5fSAnatolij Gustschin ret = fdt_increase_size(blob, 512); 1398beca5a5fSAnatolij Gustschin if (!ret) 1399beca5a5fSAnatolij Gustschin goto add_edid; 1400beca5a5fSAnatolij Gustschin else 1401beca5a5fSAnatolij Gustschin goto err_size; 1402beca5a5fSAnatolij Gustschin } else if (ret < 0) { 1403beca5a5fSAnatolij Gustschin printf("Can't add property: %s\n", fdt_strerror(ret)); 1404beca5a5fSAnatolij Gustschin return ret; 1405beca5a5fSAnatolij Gustschin } 1406beca5a5fSAnatolij Gustschin } 1407beca5a5fSAnatolij Gustschin return 0; 1408beca5a5fSAnatolij Gustschin err_size: 1409beca5a5fSAnatolij Gustschin printf("Can't increase blob size: %s\n", fdt_strerror(ret)); 1410beca5a5fSAnatolij Gustschin return ret; 1411beca5a5fSAnatolij Gustschin } 1412beca5a5fSAnatolij Gustschin #endif 1413bb682001STimur Tabi 1414bb682001STimur Tabi /* 1415bb682001STimur Tabi * Verify the physical address of device tree node for a given alias 1416bb682001STimur Tabi * 1417bb682001STimur Tabi * This function locates the device tree node of a given alias, and then 1418bb682001STimur Tabi * verifies that the physical address of that device matches the given 1419bb682001STimur Tabi * parameter. It displays a message if there is a mismatch. 1420bb682001STimur Tabi * 1421bb682001STimur Tabi * Returns 1 on success, 0 on failure 1422bb682001STimur Tabi */ 1423bb682001STimur Tabi int fdt_verify_alias_address(void *fdt, int anode, const char *alias, u64 addr) 1424bb682001STimur Tabi { 1425bb682001STimur Tabi const char *path; 14268aa5ec6eSKim Phillips const fdt32_t *reg; 1427bb682001STimur Tabi int node, len; 1428bb682001STimur Tabi u64 dt_addr; 1429bb682001STimur Tabi 1430bb682001STimur Tabi path = fdt_getprop(fdt, anode, alias, NULL); 1431bb682001STimur Tabi if (!path) { 1432bb682001STimur Tabi /* If there's no such alias, then it's not a failure */ 1433bb682001STimur Tabi return 1; 1434bb682001STimur Tabi } 1435bb682001STimur Tabi 1436bb682001STimur Tabi node = fdt_path_offset(fdt, path); 1437bb682001STimur Tabi if (node < 0) { 1438bb682001STimur Tabi printf("Warning: device tree alias '%s' points to invalid " 1439bb682001STimur Tabi "node %s.\n", alias, path); 1440bb682001STimur Tabi return 0; 1441bb682001STimur Tabi } 1442bb682001STimur Tabi 1443bb682001STimur Tabi reg = fdt_getprop(fdt, node, "reg", &len); 1444bb682001STimur Tabi if (!reg) { 1445bb682001STimur Tabi printf("Warning: device tree node '%s' has no address.\n", 1446bb682001STimur Tabi path); 1447bb682001STimur Tabi return 0; 1448bb682001STimur Tabi } 1449bb682001STimur Tabi 1450bb682001STimur Tabi dt_addr = fdt_translate_address(fdt, node, reg); 1451bb682001STimur Tabi if (addr != dt_addr) { 1452e48f3741SSimon Glass printf("Warning: U-Boot configured device %s at address %" 1453e48f3741SSimon Glass PRIx64 ",\n but the device tree has it address %" 1454e48f3741SSimon Glass PRIx64 ".\n", alias, addr, dt_addr); 1455bb682001STimur Tabi return 0; 1456bb682001STimur Tabi } 1457bb682001STimur Tabi 1458bb682001STimur Tabi return 1; 1459bb682001STimur Tabi } 1460bb682001STimur Tabi 1461bb682001STimur Tabi /* 1462bb682001STimur Tabi * Returns the base address of an SOC or PCI node 1463bb682001STimur Tabi */ 1464ec002119SSimon Glass u64 fdt_get_base_address(const void *fdt, int node) 1465bb682001STimur Tabi { 1466bb682001STimur Tabi int size; 14678aa5ec6eSKim Phillips const fdt32_t *prop; 1468bb682001STimur Tabi 1469336a4487SSimon Glass prop = fdt_getprop(fdt, node, "reg", &size); 1470bb682001STimur Tabi 1471336a4487SSimon Glass return prop ? fdt_translate_address(fdt, node, prop) : 0; 1472bb682001STimur Tabi } 1473c48e6868SAlexander Graf 1474c48e6868SAlexander Graf /* 1475c48e6868SAlexander Graf * Read a property of size <prop_len>. Currently only supports 1 or 2 cells. 1476c48e6868SAlexander Graf */ 1477c48e6868SAlexander Graf static int fdt_read_prop(const fdt32_t *prop, int prop_len, int cell_off, 1478c48e6868SAlexander Graf uint64_t *val, int cells) 1479c48e6868SAlexander Graf { 1480c48e6868SAlexander Graf const fdt32_t *prop32 = &prop[cell_off]; 1481c48e6868SAlexander Graf const fdt64_t *prop64 = (const fdt64_t *)&prop[cell_off]; 1482c48e6868SAlexander Graf 1483c48e6868SAlexander Graf if ((cell_off + cells) > prop_len) 1484c48e6868SAlexander Graf return -FDT_ERR_NOSPACE; 1485c48e6868SAlexander Graf 1486c48e6868SAlexander Graf switch (cells) { 1487c48e6868SAlexander Graf case 1: 1488c48e6868SAlexander Graf *val = fdt32_to_cpu(*prop32); 1489c48e6868SAlexander Graf break; 1490c48e6868SAlexander Graf case 2: 1491c48e6868SAlexander Graf *val = fdt64_to_cpu(*prop64); 1492c48e6868SAlexander Graf break; 1493c48e6868SAlexander Graf default: 1494c48e6868SAlexander Graf return -FDT_ERR_NOSPACE; 1495c48e6868SAlexander Graf } 1496c48e6868SAlexander Graf 1497c48e6868SAlexander Graf return 0; 1498c48e6868SAlexander Graf } 1499c48e6868SAlexander Graf 1500c48e6868SAlexander Graf /** 1501c48e6868SAlexander Graf * fdt_read_range - Read a node's n'th range property 1502c48e6868SAlexander Graf * 1503c48e6868SAlexander Graf * @fdt: ptr to device tree 1504c48e6868SAlexander Graf * @node: offset of node 1505c48e6868SAlexander Graf * @n: range index 1506c48e6868SAlexander Graf * @child_addr: pointer to storage for the "child address" field 1507c48e6868SAlexander Graf * @addr: pointer to storage for the CPU view translated physical start 1508c48e6868SAlexander Graf * @len: pointer to storage for the range length 1509c48e6868SAlexander Graf * 1510c48e6868SAlexander Graf * Convenience function that reads and interprets a specific range out of 1511c48e6868SAlexander Graf * a number of the "ranges" property array. 1512c48e6868SAlexander Graf */ 1513c48e6868SAlexander Graf int fdt_read_range(void *fdt, int node, int n, uint64_t *child_addr, 1514c48e6868SAlexander Graf uint64_t *addr, uint64_t *len) 1515c48e6868SAlexander Graf { 1516c48e6868SAlexander Graf int pnode = fdt_parent_offset(fdt, node); 1517c48e6868SAlexander Graf const fdt32_t *ranges; 1518c48e6868SAlexander Graf int pacells; 1519c48e6868SAlexander Graf int acells; 1520c48e6868SAlexander Graf int scells; 1521c48e6868SAlexander Graf int ranges_len; 1522c48e6868SAlexander Graf int cell = 0; 1523c48e6868SAlexander Graf int r = 0; 1524c48e6868SAlexander Graf 1525c48e6868SAlexander Graf /* 1526c48e6868SAlexander Graf * The "ranges" property is an array of 1527c48e6868SAlexander Graf * { <child address> <parent address> <size in child address space> } 1528c48e6868SAlexander Graf * 1529c48e6868SAlexander Graf * All 3 elements can span a diffent number of cells. Fetch their size. 1530c48e6868SAlexander Graf */ 1531c48e6868SAlexander Graf pacells = fdt_getprop_u32_default_node(fdt, pnode, 0, "#address-cells", 1); 1532c48e6868SAlexander Graf acells = fdt_getprop_u32_default_node(fdt, node, 0, "#address-cells", 1); 1533c48e6868SAlexander Graf scells = fdt_getprop_u32_default_node(fdt, node, 0, "#size-cells", 1); 1534c48e6868SAlexander Graf 1535c48e6868SAlexander Graf /* Now try to get the ranges property */ 1536c48e6868SAlexander Graf ranges = fdt_getprop(fdt, node, "ranges", &ranges_len); 1537c48e6868SAlexander Graf if (!ranges) 1538c48e6868SAlexander Graf return -FDT_ERR_NOTFOUND; 1539c48e6868SAlexander Graf ranges_len /= sizeof(uint32_t); 1540c48e6868SAlexander Graf 1541c48e6868SAlexander Graf /* Jump to the n'th entry */ 1542c48e6868SAlexander Graf cell = n * (pacells + acells + scells); 1543c48e6868SAlexander Graf 1544c48e6868SAlexander Graf /* Read <child address> */ 1545c48e6868SAlexander Graf if (child_addr) { 1546c48e6868SAlexander Graf r = fdt_read_prop(ranges, ranges_len, cell, child_addr, 1547c48e6868SAlexander Graf acells); 1548c48e6868SAlexander Graf if (r) 1549c48e6868SAlexander Graf return r; 1550c48e6868SAlexander Graf } 1551c48e6868SAlexander Graf cell += acells; 1552c48e6868SAlexander Graf 1553c48e6868SAlexander Graf /* Read <parent address> */ 1554c48e6868SAlexander Graf if (addr) 1555c48e6868SAlexander Graf *addr = fdt_translate_address(fdt, node, ranges + cell); 1556c48e6868SAlexander Graf cell += pacells; 1557c48e6868SAlexander Graf 1558c48e6868SAlexander Graf /* Read <size in child address space> */ 1559c48e6868SAlexander Graf if (len) { 1560c48e6868SAlexander Graf r = fdt_read_prop(ranges, ranges_len, cell, len, scells); 1561c48e6868SAlexander Graf if (r) 1562c48e6868SAlexander Graf return r; 1563c48e6868SAlexander Graf } 1564c48e6868SAlexander Graf 1565c48e6868SAlexander Graf return 0; 1566c48e6868SAlexander Graf } 1567d4f495a8SHans de Goede 1568d4f495a8SHans de Goede /** 1569d4f495a8SHans de Goede * fdt_setup_simplefb_node - Fill and enable a simplefb node 1570d4f495a8SHans de Goede * 1571d4f495a8SHans de Goede * @fdt: ptr to device tree 1572d4f495a8SHans de Goede * @node: offset of the simplefb node 1573d4f495a8SHans de Goede * @base_address: framebuffer base address 1574d4f495a8SHans de Goede * @width: width in pixels 1575d4f495a8SHans de Goede * @height: height in pixels 1576d4f495a8SHans de Goede * @stride: bytes per line 1577d4f495a8SHans de Goede * @format: pixel format string 1578d4f495a8SHans de Goede * 1579d4f495a8SHans de Goede * Convenience function to fill and enable a simplefb node. 1580d4f495a8SHans de Goede */ 1581d4f495a8SHans de Goede int fdt_setup_simplefb_node(void *fdt, int node, u64 base_address, u32 width, 1582d4f495a8SHans de Goede u32 height, u32 stride, const char *format) 1583d4f495a8SHans de Goede { 1584d4f495a8SHans de Goede char name[32]; 1585d4f495a8SHans de Goede fdt32_t cells[4]; 1586d4f495a8SHans de Goede int i, addrc, sizec, ret; 1587d4f495a8SHans de Goede 1588eed36609SSimon Glass fdt_support_default_count_cells(fdt, fdt_parent_offset(fdt, node), 1589d4f495a8SHans de Goede &addrc, &sizec); 1590d4f495a8SHans de Goede i = 0; 1591d4f495a8SHans de Goede if (addrc == 2) 1592d4f495a8SHans de Goede cells[i++] = cpu_to_fdt32(base_address >> 32); 1593d4f495a8SHans de Goede cells[i++] = cpu_to_fdt32(base_address); 1594d4f495a8SHans de Goede if (sizec == 2) 1595d4f495a8SHans de Goede cells[i++] = 0; 1596d4f495a8SHans de Goede cells[i++] = cpu_to_fdt32(height * stride); 1597d4f495a8SHans de Goede 1598d4f495a8SHans de Goede ret = fdt_setprop(fdt, node, "reg", cells, sizeof(cells[0]) * i); 1599d4f495a8SHans de Goede if (ret < 0) 1600d4f495a8SHans de Goede return ret; 1601d4f495a8SHans de Goede 1602c3ec646dSSimon Glass snprintf(name, sizeof(name), "framebuffer@%" PRIx64, base_address); 1603d4f495a8SHans de Goede ret = fdt_set_name(fdt, node, name); 1604d4f495a8SHans de Goede if (ret < 0) 1605d4f495a8SHans de Goede return ret; 1606d4f495a8SHans de Goede 1607d4f495a8SHans de Goede ret = fdt_setprop_u32(fdt, node, "width", width); 1608d4f495a8SHans de Goede if (ret < 0) 1609d4f495a8SHans de Goede return ret; 1610d4f495a8SHans de Goede 1611d4f495a8SHans de Goede ret = fdt_setprop_u32(fdt, node, "height", height); 1612d4f495a8SHans de Goede if (ret < 0) 1613d4f495a8SHans de Goede return ret; 1614d4f495a8SHans de Goede 1615d4f495a8SHans de Goede ret = fdt_setprop_u32(fdt, node, "stride", stride); 1616d4f495a8SHans de Goede if (ret < 0) 1617d4f495a8SHans de Goede return ret; 1618d4f495a8SHans de Goede 1619d4f495a8SHans de Goede ret = fdt_setprop_string(fdt, node, "format", format); 1620d4f495a8SHans de Goede if (ret < 0) 1621d4f495a8SHans de Goede return ret; 1622d4f495a8SHans de Goede 1623d4f495a8SHans de Goede ret = fdt_setprop_string(fdt, node, "status", "okay"); 1624d4f495a8SHans de Goede if (ret < 0) 1625d4f495a8SHans de Goede return ret; 1626d4f495a8SHans de Goede 1627d4f495a8SHans de Goede return 0; 1628d4f495a8SHans de Goede } 162908daa258STim Harvey 163008daa258STim Harvey /* 163108daa258STim Harvey * Update native-mode in display-timings from display environment variable. 163208daa258STim Harvey * The node to update are specified by path. 163308daa258STim Harvey */ 163408daa258STim Harvey int fdt_fixup_display(void *blob, const char *path, const char *display) 163508daa258STim Harvey { 163608daa258STim Harvey int off, toff; 163708daa258STim Harvey 163808daa258STim Harvey if (!display || !path) 163908daa258STim Harvey return -FDT_ERR_NOTFOUND; 164008daa258STim Harvey 164108daa258STim Harvey toff = fdt_path_offset(blob, path); 164208daa258STim Harvey if (toff >= 0) 164308daa258STim Harvey toff = fdt_subnode_offset(blob, toff, "display-timings"); 164408daa258STim Harvey if (toff < 0) 164508daa258STim Harvey return toff; 164608daa258STim Harvey 164708daa258STim Harvey for (off = fdt_first_subnode(blob, toff); 164808daa258STim Harvey off >= 0; 164908daa258STim Harvey off = fdt_next_subnode(blob, off)) { 165008daa258STim Harvey uint32_t h = fdt_get_phandle(blob, off); 165108daa258STim Harvey debug("%s:0x%x\n", fdt_get_name(blob, off, NULL), 165208daa258STim Harvey fdt32_to_cpu(h)); 165308daa258STim Harvey if (strcasecmp(fdt_get_name(blob, off, NULL), display) == 0) 165408daa258STim Harvey return fdt_setprop_u32(blob, toff, "native-mode", h); 165508daa258STim Harvey } 165608daa258STim Harvey return toff; 165708daa258STim Harvey } 1658