| // SPDX-License-Identifier: GPL-2.0+ |
| /* |
| * Copyright (c) 2017 Google, Inc |
| * Written by Simon Glass <sjg@chromium.org> |
| */ |
| |
| #define LOG_CATEGORY LOGC_DT |
| |
| #include <common.h> |
| #include <dm.h> |
| #include <fdtdec.h> |
| #include <fdt_support.h> |
| #include <log.h> |
| #include <malloc.h> |
| #include <of_live.h> |
| #include <linux/libfdt.h> |
| #include <dm/of_access.h> |
| #include <dm/of_addr.h> |
| #include <dm/ofnode.h> |
| #include <linux/err.h> |
| #include <linux/ioport.h> |
| #include <asm/global_data.h> |
| |
| DECLARE_GLOBAL_DATA_PTR; |
| |
| #if CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) |
| static void *oftree_list[CONFIG_OFNODE_MULTI_TREE_MAX]; |
| static int oftree_count; |
| |
| void oftree_reset(void) |
| { |
| if (gd->flags & GD_FLG_RELOC) { |
| oftree_count = 0; |
| oftree_list[oftree_count++] = (void *)gd->fdt_blob; |
| } |
| } |
| |
| static int oftree_find(const void *fdt) |
| { |
| int i; |
| |
| for (i = 0; i < oftree_count; i++) { |
| if (fdt == oftree_list[i]) |
| return i; |
| } |
| |
| return -1; |
| } |
| |
| static int check_tree_count(void) |
| { |
| if (oftree_count == CONFIG_OFNODE_MULTI_TREE_MAX) { |
| log_warning("Too many registered device trees (max %d)\n", |
| CONFIG_OFNODE_MULTI_TREE_MAX); |
| return -E2BIG; |
| } |
| |
| return 0; |
| } |
| |
| static oftree oftree_ensure(void *fdt) |
| { |
| oftree tree; |
| int i; |
| |
| if (of_live_active()) { |
| struct device_node *root; |
| int ret; |
| |
| ret = unflatten_device_tree(fdt, &root); |
| if (ret) { |
| log_err("Failed to create live tree: err=%d\n", ret); |
| return oftree_null(); |
| } |
| tree = oftree_from_np(root); |
| |
| return tree; |
| } |
| |
| if (gd->flags & GD_FLG_RELOC) { |
| i = oftree_find(fdt); |
| if (i == -1) { |
| if (check_tree_count()) |
| return oftree_null(); |
| |
| /* register the new tree */ |
| i = oftree_count++; |
| oftree_list[i] = fdt; |
| log_debug("oftree: registered tree %d: %p\n", i, fdt); |
| } |
| } else { |
| if (fdt != gd->fdt_blob) { |
| log_debug("Only the control FDT can be accessed before relocation\n"); |
| return oftree_null(); |
| } |
| } |
| |
| tree.fdt = fdt; |
| |
| return tree; |
| } |
| |
| int oftree_new(oftree *treep) |
| { |
| oftree tree = oftree_null(); |
| int ret; |
| |
| if (of_live_active()) { |
| struct device_node *root; |
| |
| ret = of_live_create_empty(&root); |
| if (ret) |
| return log_msg_ret("liv", ret); |
| tree = oftree_from_np(root); |
| } else { |
| const int size = 1024; |
| void *fdt; |
| |
| ret = check_tree_count(); |
| if (ret) |
| return log_msg_ret("fla", ret); |
| |
| /* register the new tree with a small size */ |
| fdt = malloc(size); |
| if (!fdt) |
| return log_msg_ret("fla", -ENOMEM); |
| ret = fdt_create_empty_tree(fdt, size); |
| if (ret) |
| return log_msg_ret("fla", -EINVAL); |
| oftree_list[oftree_count++] = fdt; |
| tree.fdt = fdt; |
| } |
| *treep = tree; |
| |
| return 0; |
| } |
| |
| void oftree_dispose(oftree tree) |
| { |
| if (of_live_active()) |
| of_live_free(tree.np); |
| } |
| |
| void *ofnode_lookup_fdt(ofnode node) |
| { |
| if (gd->flags & GD_FLG_RELOC) { |
| uint i = OFTREE_TREE_ID(node.of_offset); |
| |
| if (i >= oftree_count) { |
| log_debug("Invalid tree ID %x\n", i); |
| return NULL; |
| } |
| |
| return oftree_list[i]; |
| } else { |
| return (void *)gd->fdt_blob; |
| } |
| } |
| |
| void *ofnode_to_fdt(ofnode node) |
| { |
| #ifdef OF_CHECKS |
| if (of_live_active()) |
| return NULL; |
| #endif |
| if (CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) && ofnode_valid(node)) |
| return ofnode_lookup_fdt(node); |
| |
| /* Use the control FDT by default */ |
| return (void *)gd->fdt_blob; |
| } |
| |
| /** |
| * ofnode_to_offset() - convert an ofnode to a flat DT offset |
| * |
| * This cannot be called if the reference contains a node pointer. |
| * |
| * @node: Reference containing offset (possibly invalid) |
| * Return: DT offset (can be -1) |
| */ |
| int ofnode_to_offset(ofnode node) |
| { |
| #ifdef OF_CHECKS |
| if (of_live_active()) |
| return -1; |
| #endif |
| if (CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) && node.of_offset >= 0) |
| return OFTREE_OFFSET(node.of_offset); |
| |
| return node.of_offset; |
| } |
| |
| oftree oftree_from_fdt(void *fdt) |
| { |
| oftree tree; |
| |
| if (CONFIG_IS_ENABLED(OFNODE_MULTI_TREE)) |
| return oftree_ensure(fdt); |
| |
| #ifdef OF_CHECKS |
| if (of_live_active()) |
| return oftree_null(); |
| #endif |
| tree.fdt = fdt; |
| |
| return tree; |
| } |
| |
| /** |
| * noffset_to_ofnode() - convert a DT offset to an ofnode |
| * |
| * @other_node: Node in the same tree to use as a reference |
| * @of_offset: DT offset (either valid, or -1) |
| * Return: reference to the associated DT offset |
| */ |
| ofnode noffset_to_ofnode(ofnode other_node, int of_offset) |
| { |
| ofnode node; |
| |
| if (of_live_active()) |
| node.np = NULL; |
| else if (!CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) || of_offset < 0 || |
| !ofnode_valid(other_node)) |
| node.of_offset = of_offset; |
| else |
| node.of_offset = OFTREE_MAKE_NODE(other_node.of_offset, |
| of_offset); |
| |
| return node; |
| } |
| |
| #else /* !OFNODE_MULTI_TREE */ |
| |
| static inline int oftree_find(const void *fdt) |
| { |
| return 0; |
| } |
| |
| int oftree_new(oftree *treep) |
| { |
| return -ENOSYS; |
| } |
| |
| #endif /* OFNODE_MULTI_TREE */ |
| |
| int oftree_to_fdt(oftree tree, struct abuf *buf) |
| { |
| int ret; |
| |
| if (of_live_active()) { |
| ret = of_live_flatten(ofnode_to_np(oftree_root(tree)), buf); |
| if (ret) |
| return log_msg_ret("flt", ret); |
| } else { |
| void *fdt = oftree_lookup_fdt(tree); |
| |
| abuf_init(buf); |
| abuf_set(buf, fdt, fdt_totalsize(fdt)); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * ofnode_from_tree_offset() - get an ofnode from a tree offset (flat tree) |
| * |
| * Looks up the tree and returns an ofnode with the correct of_offset (i.e. |
| * containing the tree ID). |
| * |
| * If @offset is < 0 then this returns an ofnode with that offset and no tree |
| * ID. |
| * |
| * @tree: tree to check |
| * @offset: offset within that tree (can be < 0) |
| * @return node for that offset, with the correct ID |
| */ |
| static ofnode ofnode_from_tree_offset(oftree tree, int offset) |
| { |
| ofnode node; |
| |
| if (CONFIG_IS_ENABLED(OFNODE_MULTI_TREE) && offset >= 0) { |
| int tree_id = oftree_find(tree.fdt); |
| |
| if (tree_id == -1) |
| return ofnode_null(); |
| node.of_offset = OFTREE_NODE(tree_id, offset); |
| } else { |
| node.of_offset = offset; |
| } |
| |
| return node; |
| } |
| |
| bool ofnode_name_eq(ofnode node, const char *name) |
| { |
| const char *node_name; |
| size_t len; |
| |
| assert(ofnode_valid(node)); |
| |
| node_name = ofnode_get_name(node); |
| len = strchrnul(node_name, '@') - node_name; |
| |
| return (strlen(name) == len) && !strncmp(node_name, name, len); |
| } |
| |
| int ofnode_read_u8(ofnode node, const char *propname, u8 *outp) |
| { |
| const u8 *cell; |
| int len; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| if (ofnode_is_np(node)) |
| return of_read_u8(ofnode_to_np(node), propname, outp); |
| |
| cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname, |
| &len); |
| if (!cell || len < sizeof(*cell)) { |
| debug("(not found)\n"); |
| return -EINVAL; |
| } |
| *outp = *cell; |
| debug("%#x (%d)\n", *outp, *outp); |
| |
| return 0; |
| } |
| |
| u8 ofnode_read_u8_default(ofnode node, const char *propname, u8 def) |
| { |
| assert(ofnode_valid(node)); |
| ofnode_read_u8(node, propname, &def); |
| |
| return def; |
| } |
| |
| int ofnode_read_u16(ofnode node, const char *propname, u16 *outp) |
| { |
| const fdt16_t *cell; |
| int len; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| if (ofnode_is_np(node)) |
| return of_read_u16(ofnode_to_np(node), propname, outp); |
| |
| cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname, |
| &len); |
| if (!cell || len < sizeof(*cell)) { |
| debug("(not found)\n"); |
| return -EINVAL; |
| } |
| *outp = be16_to_cpup(cell); |
| debug("%#x (%d)\n", *outp, *outp); |
| |
| return 0; |
| } |
| |
| u16 ofnode_read_u16_default(ofnode node, const char *propname, u16 def) |
| { |
| assert(ofnode_valid(node)); |
| ofnode_read_u16(node, propname, &def); |
| |
| return def; |
| } |
| |
| int ofnode_read_u32(ofnode node, const char *propname, u32 *outp) |
| { |
| return ofnode_read_u32_index(node, propname, 0, outp); |
| } |
| |
| u32 ofnode_read_u32_default(ofnode node, const char *propname, u32 def) |
| { |
| assert(ofnode_valid(node)); |
| ofnode_read_u32_index(node, propname, 0, &def); |
| |
| return def; |
| } |
| |
| int ofnode_read_u32_index(ofnode node, const char *propname, int index, |
| u32 *outp) |
| { |
| const fdt32_t *cell; |
| int len; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| if (ofnode_is_np(node)) |
| return of_read_u32_index(ofnode_to_np(node), propname, index, |
| outp); |
| |
| cell = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname, &len); |
| if (!cell) { |
| debug("(not found)\n"); |
| return -EINVAL; |
| } |
| |
| if (len < (sizeof(int) * (index + 1))) { |
| debug("(not large enough)\n"); |
| return -EOVERFLOW; |
| } |
| |
| *outp = fdt32_to_cpu(cell[index]); |
| debug("%#x (%d)\n", *outp, *outp); |
| |
| return 0; |
| } |
| |
| int ofnode_read_u64_index(ofnode node, const char *propname, int index, |
| u64 *outp) |
| { |
| const fdt64_t *cell; |
| int len; |
| |
| assert(ofnode_valid(node)); |
| |
| if (ofnode_is_np(node)) |
| return of_read_u64_index(ofnode_to_np(node), propname, index, |
| outp); |
| |
| cell = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname, &len); |
| if (!cell) { |
| debug("(not found)\n"); |
| return -EINVAL; |
| } |
| |
| if (len < (sizeof(u64) * (index + 1))) { |
| debug("(not large enough)\n"); |
| return -EOVERFLOW; |
| } |
| |
| *outp = fdt64_to_cpu(cell[index]); |
| debug("%#llx (%lld)\n", *outp, *outp); |
| |
| return 0; |
| } |
| |
| u32 ofnode_read_u32_index_default(ofnode node, const char *propname, int index, |
| u32 def) |
| { |
| assert(ofnode_valid(node)); |
| ofnode_read_u32_index(node, propname, index, &def); |
| |
| return def; |
| } |
| |
| int ofnode_read_s32_default(ofnode node, const char *propname, s32 def) |
| { |
| assert(ofnode_valid(node)); |
| ofnode_read_u32(node, propname, (u32 *)&def); |
| |
| return def; |
| } |
| |
| int ofnode_read_u64(ofnode node, const char *propname, u64 *outp) |
| { |
| const unaligned_fdt64_t *cell; |
| int len; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| if (ofnode_is_np(node)) |
| return of_read_u64(ofnode_to_np(node), propname, outp); |
| |
| cell = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname, &len); |
| if (!cell || len < sizeof(*cell)) { |
| debug("(not found)\n"); |
| return -EINVAL; |
| } |
| *outp = fdt64_to_cpu(cell[0]); |
| debug("%#llx (%lld)\n", (unsigned long long)*outp, |
| (unsigned long long)*outp); |
| |
| return 0; |
| } |
| |
| u64 ofnode_read_u64_default(ofnode node, const char *propname, u64 def) |
| { |
| assert(ofnode_valid(node)); |
| ofnode_read_u64(node, propname, &def); |
| |
| return def; |
| } |
| |
| bool ofnode_read_bool(ofnode node, const char *propname) |
| { |
| bool prop; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| prop = ofnode_has_property(node, propname); |
| |
| debug("%s\n", prop ? "true" : "false"); |
| |
| return prop ? true : false; |
| } |
| |
| const void *ofnode_read_prop(ofnode node, const char *propname, int *sizep) |
| { |
| const char *val = NULL; |
| int len; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| if (ofnode_is_np(node)) { |
| struct property *prop = of_find_property( |
| ofnode_to_np(node), propname, &len); |
| |
| if (prop) { |
| val = prop->value; |
| len = prop->length; |
| } |
| } else { |
| val = fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname, &len); |
| } |
| if (!val) { |
| debug("<not found>\n"); |
| if (sizep) |
| *sizep = -FDT_ERR_NOTFOUND; |
| return NULL; |
| } |
| if (sizep) |
| *sizep = len; |
| |
| return val; |
| } |
| |
| const char *ofnode_read_string(ofnode node, const char *propname) |
| { |
| const char *str; |
| int len; |
| |
| str = ofnode_read_prop(node, propname, &len); |
| if (!str) |
| return NULL; |
| |
| if (strnlen(str, len) >= len) { |
| debug("<invalid>\n"); |
| return NULL; |
| } |
| debug("%s\n", str); |
| |
| return str; |
| } |
| |
| int ofnode_read_size(ofnode node, const char *propname) |
| { |
| int len; |
| |
| if (!ofnode_read_prop(node, propname, &len)) |
| return -EINVAL; |
| |
| return len; |
| } |
| |
| ofnode ofnode_find_subnode(ofnode node, const char *subnode_name) |
| { |
| ofnode subnode; |
| |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, subnode_name); |
| |
| if (ofnode_is_np(node)) { |
| struct device_node *np = ofnode_to_np(node); |
| |
| for (np = np->child; np; np = np->sibling) { |
| if (!strcmp(subnode_name, np->name)) |
| break; |
| } |
| subnode = np_to_ofnode(np); |
| } else { |
| int ooffset = fdt_subnode_offset(ofnode_to_fdt(node), |
| ofnode_to_offset(node), subnode_name); |
| subnode = noffset_to_ofnode(node, ooffset); |
| } |
| debug("%s\n", ofnode_valid(subnode) ? |
| ofnode_get_name(subnode) : "<none>"); |
| |
| return subnode; |
| } |
| |
| int ofnode_read_u32_array(ofnode node, const char *propname, |
| u32 *out_values, size_t sz) |
| { |
| assert(ofnode_valid(node)); |
| debug("%s: %s: ", __func__, propname); |
| |
| if (ofnode_is_np(node)) { |
| return of_read_u32_array(ofnode_to_np(node), propname, |
| out_values, sz); |
| } else { |
| int ret; |
| |
| ret = fdtdec_get_int_array(ofnode_to_fdt(node), |
| ofnode_to_offset(node), propname, |
| out_values, sz); |
| |
| /* get the error right, but space is more important in SPL */ |
| if (!IS_ENABLED(CONFIG_SPL_BUILD)) { |
| if (ret == -FDT_ERR_NOTFOUND) |
| return -EINVAL; |
| else if (ret == -FDT_ERR_BADLAYOUT) |
| return -EOVERFLOW; |
| } |
| return ret; |
| } |
| } |
| |
| #if !CONFIG_IS_ENABLED(DM_INLINE_OFNODE) |
| bool ofnode_is_enabled(ofnode node) |
| { |
| if (ofnode_is_np(node)) { |
| return of_device_is_available(ofnode_to_np(node)); |
| } else { |
| return fdtdec_get_is_enabled(ofnode_to_fdt(node), |
| ofnode_to_offset(node)); |
| } |
| } |
| |
| ofnode ofnode_first_subnode(ofnode node) |
| { |
| assert(ofnode_valid(node)); |
| if (ofnode_is_np(node)) |
| return np_to_ofnode(node.np->child); |
| |
| return noffset_to_ofnode(node, |
| fdt_first_subnode(ofnode_to_fdt(node), ofnode_to_offset(node))); |
| } |
| |
| ofnode ofnode_next_subnode(ofnode node) |
| { |
| assert(ofnode_valid(node)); |
| if (ofnode_is_np(node)) |
| return np_to_ofnode(node.np->sibling); |
| |
| return noffset_to_ofnode(node, |
| fdt_next_subnode(ofnode_to_fdt(node), ofnode_to_offset(node))); |
| } |
| #endif /* !DM_INLINE_OFNODE */ |
| |
| ofnode ofnode_get_parent(ofnode node) |
| { |
| ofnode parent; |
| |
| assert(ofnode_valid(node)); |
| if (ofnode_is_np(node)) |
| parent = np_to_ofnode(of_get_parent(ofnode_to_np(node))); |
| else |
| parent.of_offset = fdt_parent_offset(ofnode_to_fdt(node), |
| ofnode_to_offset(node)); |
| |
| return parent; |
| } |
| |
| const char *ofnode_get_name(ofnode node) |
| { |
| if (!ofnode_valid(node)) { |
| debug("%s node not valid\n", __func__); |
| return NULL; |
| } |
| |
| if (ofnode_is_np(node)) |
| return node.np->name; |
| |
| return fdt_get_name(ofnode_to_fdt(node), ofnode_to_offset(node), NULL); |
| } |
| |
| int ofnode_get_path(ofnode node, char *buf, int buflen) |
| { |
| assert(ofnode_valid(node)); |
| |
| if (ofnode_is_np(node)) { |
| if (strlen(node.np->full_name) >= buflen) |
| return -ENOSPC; |
| |
| strcpy(buf, node.np->full_name); |
| |
| return 0; |
| } else { |
| int res; |
| |
| res = fdt_get_path(ofnode_to_fdt(node), ofnode_to_offset(node), buf, |
| buflen); |
| if (!res) |
| return res; |
| else if (res == -FDT_ERR_NOSPACE) |
| return -ENOSPC; |
| else |
| return -EINVAL; |
| } |
| } |
| |
| ofnode ofnode_get_by_phandle(uint phandle) |
| { |
| ofnode node; |
| |
| if (of_live_active()) |
| node = np_to_ofnode(of_find_node_by_phandle(NULL, phandle)); |
| else |
| node.of_offset = fdt_node_offset_by_phandle(gd->fdt_blob, |
| phandle); |
| |
| return node; |
| } |
| |
| ofnode oftree_get_by_phandle(oftree tree, uint phandle) |
| { |
| ofnode node; |
| |
| if (of_live_active()) |
| node = np_to_ofnode(of_find_node_by_phandle(tree.np, phandle)); |
| else |
| node = ofnode_from_tree_offset(tree, |
| fdt_node_offset_by_phandle(oftree_lookup_fdt(tree), |
| phandle)); |
| |
| return node; |
| } |
| |
| static fdt_addr_t __ofnode_get_addr_size_index(ofnode node, int index, |
| fdt_size_t *size, bool translate) |
| { |
| int na, ns; |
| |
| if (size) |
| *size = FDT_SIZE_T_NONE; |
| |
| if (ofnode_is_np(node)) { |
| const __be32 *prop_val; |
| u64 size64; |
| uint flags; |
| |
| prop_val = of_get_address(ofnode_to_np(node), index, &size64, |
| &flags); |
| if (!prop_val) |
| return FDT_ADDR_T_NONE; |
| |
| if (size) |
| *size = size64; |
| |
| ns = of_n_size_cells(ofnode_to_np(node)); |
| |
| if (translate && IS_ENABLED(CONFIG_OF_TRANSLATE) && ns > 0) { |
| return of_translate_address(ofnode_to_np(node), prop_val); |
| } else { |
| na = of_n_addr_cells(ofnode_to_np(node)); |
| return of_read_number(prop_val, na); |
| } |
| } else { |
| na = ofnode_read_simple_addr_cells(ofnode_get_parent(node)); |
| ns = ofnode_read_simple_size_cells(ofnode_get_parent(node)); |
| return fdtdec_get_addr_size_fixed(ofnode_to_fdt(node), |
| ofnode_to_offset(node), "reg", |
| index, na, ns, size, |
| translate); |
| } |
| } |
| |
| fdt_addr_t ofnode_get_addr_size_index(ofnode node, int index, fdt_size_t *size) |
| { |
| return __ofnode_get_addr_size_index(node, index, size, true); |
| } |
| |
| fdt_addr_t ofnode_get_addr_size_index_notrans(ofnode node, int index, |
| fdt_size_t *size) |
| { |
| return __ofnode_get_addr_size_index(node, index, size, false); |
| } |
| |
| fdt_addr_t ofnode_get_addr_index(ofnode node, int index) |
| { |
| fdt_size_t size; |
| |
| return ofnode_get_addr_size_index(node, index, &size); |
| } |
| |
| fdt_addr_t ofnode_get_addr(ofnode node) |
| { |
| return ofnode_get_addr_index(node, 0); |
| } |
| |
| fdt_size_t ofnode_get_size(ofnode node) |
| { |
| fdt_size_t size; |
| |
| ofnode_get_addr_size_index(node, 0, &size); |
| |
| return size; |
| } |
| |
| int ofnode_stringlist_search(ofnode node, const char *property, |
| const char *string) |
| { |
| if (ofnode_is_np(node)) { |
| return of_property_match_string(ofnode_to_np(node), |
| property, string); |
| } else { |
| int ret; |
| |
| ret = fdt_stringlist_search(ofnode_to_fdt(node), |
| ofnode_to_offset(node), property, |
| string); |
| if (ret == -FDT_ERR_NOTFOUND) |
| return -ENODATA; |
| else if (ret < 0) |
| return -EINVAL; |
| |
| return ret; |
| } |
| } |
| |
| int ofnode_read_string_index(ofnode node, const char *property, int index, |
| const char **outp) |
| { |
| if (ofnode_is_np(node)) { |
| return of_property_read_string_index(ofnode_to_np(node), |
| property, index, outp); |
| } else { |
| int len; |
| |
| *outp = fdt_stringlist_get(ofnode_to_fdt(node), |
| ofnode_to_offset(node), |
| property, index, &len); |
| if (len < 0) |
| return -EINVAL; |
| return 0; |
| } |
| } |
| |
| int ofnode_read_string_count(ofnode node, const char *property) |
| { |
| if (ofnode_is_np(node)) { |
| return of_property_count_strings(ofnode_to_np(node), property); |
| } else { |
| return fdt_stringlist_count(ofnode_to_fdt(node), |
| ofnode_to_offset(node), property); |
| } |
| } |
| |
| int ofnode_read_string_list(ofnode node, const char *property, |
| const char ***listp) |
| { |
| const char **prop; |
| int count; |
| int i; |
| |
| *listp = NULL; |
| count = ofnode_read_string_count(node, property); |
| if (count < 0) |
| return count; |
| if (!count) |
| return 0; |
| |
| prop = calloc(count + 1, sizeof(char *)); |
| if (!prop) |
| return -ENOMEM; |
| |
| for (i = 0; i < count; i++) |
| ofnode_read_string_index(node, property, i, &prop[i]); |
| prop[count] = NULL; |
| *listp = prop; |
| |
| return count; |
| } |
| |
| static void ofnode_from_fdtdec_phandle_args(struct fdtdec_phandle_args *in, |
| struct ofnode_phandle_args *out) |
| { |
| assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS); |
| out->node = offset_to_ofnode(in->node); |
| out->args_count = in->args_count; |
| memcpy(out->args, in->args, sizeof(out->args)); |
| } |
| |
| static void ofnode_from_of_phandle_args(struct of_phandle_args *in, |
| struct ofnode_phandle_args *out) |
| { |
| assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS); |
| out->node = np_to_ofnode(in->np); |
| out->args_count = in->args_count; |
| memcpy(out->args, in->args, sizeof(out->args)); |
| } |
| |
| int ofnode_parse_phandle_with_args(ofnode node, const char *list_name, |
| const char *cells_name, int cell_count, |
| int index, |
| struct ofnode_phandle_args *out_args) |
| { |
| if (ofnode_is_np(node)) { |
| struct of_phandle_args args; |
| int ret; |
| |
| ret = of_parse_phandle_with_args(ofnode_to_np(node), |
| list_name, cells_name, |
| cell_count, index, |
| &args); |
| if (ret) |
| return ret; |
| ofnode_from_of_phandle_args(&args, out_args); |
| } else { |
| struct fdtdec_phandle_args args; |
| int ret; |
| |
| ret = fdtdec_parse_phandle_with_args(ofnode_to_fdt(node), |
| ofnode_to_offset(node), |
| list_name, cells_name, |
| cell_count, index, &args); |
| if (ret) |
| return ret; |
| ofnode_from_fdtdec_phandle_args(&args, out_args); |
| } |
| |
| return 0; |
| } |
| |
| int ofnode_count_phandle_with_args(ofnode node, const char *list_name, |
| const char *cells_name, int cell_count) |
| { |
| if (ofnode_is_np(node)) |
| return of_count_phandle_with_args(ofnode_to_np(node), |
| list_name, cells_name, cell_count); |
| else |
| return fdtdec_parse_phandle_with_args(ofnode_to_fdt(node), |
| ofnode_to_offset(node), list_name, cells_name, |
| cell_count, -1, NULL); |
| } |
| |
| ofnode ofnode_path(const char *path) |
| { |
| if (of_live_active()) |
| return np_to_ofnode(of_find_node_by_path(path)); |
| else |
| return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path)); |
| } |
| |
| ofnode oftree_root(oftree tree) |
| { |
| if (of_live_active()) { |
| return np_to_ofnode(tree.np); |
| } else { |
| return ofnode_from_tree_offset(tree, 0); |
| } |
| } |
| |
| ofnode oftree_path(oftree tree, const char *path) |
| { |
| if (of_live_active()) { |
| return np_to_ofnode(of_find_node_opts_by_path(tree.np, path, |
| NULL)); |
| } else if (*path != '/' && tree.fdt != gd->fdt_blob) { |
| return ofnode_null(); /* Aliases only on control FDT */ |
| } else { |
| int offset = fdt_path_offset(tree.fdt, path); |
| |
| return ofnode_from_tree_offset(tree, offset); |
| } |
| } |
| |
| const void *ofnode_read_chosen_prop(const char *propname, int *sizep) |
| { |
| ofnode chosen_node; |
| |
| chosen_node = ofnode_path("/chosen"); |
| |
| return ofnode_read_prop(chosen_node, propname, sizep); |
| } |
| |
| const char *ofnode_read_chosen_string(const char *propname) |
| { |
| return ofnode_read_chosen_prop(propname, NULL); |
| } |
| |
| ofnode ofnode_get_chosen_node(const char *name) |
| { |
| const char *prop; |
| |
| prop = ofnode_read_chosen_prop(name, NULL); |
| if (!prop) |
| return ofnode_null(); |
| |
| return ofnode_path(prop); |
| } |
| |
| const void *ofnode_read_aliases_prop(const char *propname, int *sizep) |
| { |
| ofnode node; |
| |
| node = ofnode_path("/aliases"); |
| |
| return ofnode_read_prop(node, propname, sizep); |
| } |
| |
| ofnode ofnode_get_aliases_node(const char *name) |
| { |
| const char *prop; |
| |
| prop = ofnode_read_aliases_prop(name, NULL); |
| if (!prop) |
| return ofnode_null(); |
| |
| debug("%s: node_path: %s\n", __func__, prop); |
| |
| return ofnode_path(prop); |
| } |
| |
| int ofnode_get_child_count(ofnode parent) |
| { |
| ofnode child; |
| int num = 0; |
| |
| ofnode_for_each_subnode(child, parent) |
| num++; |
| |
| return num; |
| } |
| |
| static int decode_timing_property(ofnode node, const char *name, |
| struct timing_entry *result) |
| { |
| int length, ret = 0; |
| |
| length = ofnode_read_size(node, name); |
| if (length < 0) { |
| debug("%s: could not find property %s\n", |
| ofnode_get_name(node), name); |
| return length; |
| } |
| |
| if (length == sizeof(u32)) { |
| result->typ = ofnode_read_u32_default(node, name, 0); |
| result->min = result->typ; |
| result->max = result->typ; |
| } else { |
| ret = ofnode_read_u32_array(node, name, &result->min, 3); |
| } |
| |
| return ret; |
| } |
| |
| int ofnode_decode_display_timing(ofnode parent, int index, |
| struct display_timing *dt) |
| { |
| int i; |
| ofnode timings, node; |
| u32 val = 0; |
| int ret = 0; |
| |
| timings = ofnode_find_subnode(parent, "display-timings"); |
| if (!ofnode_valid(timings)) |
| return -EINVAL; |
| |
| i = 0; |
| ofnode_for_each_subnode(node, timings) { |
| if (i++ == index) |
| break; |
| } |
| |
| if (!ofnode_valid(node)) |
| return -EINVAL; |
| |
| memset(dt, 0, sizeof(*dt)); |
| |
| ret |= decode_timing_property(node, "hback-porch", &dt->hback_porch); |
| ret |= decode_timing_property(node, "hfront-porch", &dt->hfront_porch); |
| ret |= decode_timing_property(node, "hactive", &dt->hactive); |
| ret |= decode_timing_property(node, "hsync-len", &dt->hsync_len); |
| ret |= decode_timing_property(node, "vback-porch", &dt->vback_porch); |
| ret |= decode_timing_property(node, "vfront-porch", &dt->vfront_porch); |
| ret |= decode_timing_property(node, "vactive", &dt->vactive); |
| ret |= decode_timing_property(node, "vsync-len", &dt->vsync_len); |
| ret |= decode_timing_property(node, "clock-frequency", &dt->pixelclock); |
| |
| dt->flags = 0; |
| val = ofnode_read_u32_default(node, "vsync-active", -1); |
| if (val != -1) { |
| dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : |
| DISPLAY_FLAGS_VSYNC_LOW; |
| } |
| val = ofnode_read_u32_default(node, "hsync-active", -1); |
| if (val != -1) { |
| dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : |
| DISPLAY_FLAGS_HSYNC_LOW; |
| } |
| val = ofnode_read_u32_default(node, "de-active", -1); |
| if (val != -1) { |
| dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : |
| DISPLAY_FLAGS_DE_LOW; |
| } |
| val = ofnode_read_u32_default(node, "pixelclk-active", -1); |
| if (val != -1) { |
| dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : |
| DISPLAY_FLAGS_PIXDATA_NEGEDGE; |
| } |
| |
| if (ofnode_read_bool(node, "interlaced")) |
| dt->flags |= DISPLAY_FLAGS_INTERLACED; |
| if (ofnode_read_bool(node, "doublescan")) |
| dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; |
| if (ofnode_read_bool(node, "doubleclk")) |
| dt->flags |= DISPLAY_FLAGS_DOUBLECLK; |
| |
| return ret; |
| } |
| |
| int ofnode_decode_panel_timing(ofnode parent, |
| struct display_timing *dt) |
| { |
| ofnode timings; |
| u32 val = 0; |
| int ret = 0; |
| |
| timings = ofnode_find_subnode(parent, "panel-timing"); |
| if (!ofnode_valid(timings)) |
| return -EINVAL; |
| memset(dt, 0, sizeof(*dt)); |
| ret |= decode_timing_property(timings, "hback-porch", &dt->hback_porch); |
| ret |= decode_timing_property(timings, "hfront-porch", &dt->hfront_porch); |
| ret |= decode_timing_property(timings, "hactive", &dt->hactive); |
| ret |= decode_timing_property(timings, "hsync-len", &dt->hsync_len); |
| ret |= decode_timing_property(timings, "vback-porch", &dt->vback_porch); |
| ret |= decode_timing_property(timings, "vfront-porch", &dt->vfront_porch); |
| ret |= decode_timing_property(timings, "vactive", &dt->vactive); |
| ret |= decode_timing_property(timings, "vsync-len", &dt->vsync_len); |
| ret |= decode_timing_property(timings, "clock-frequency", &dt->pixelclock); |
| dt->flags = 0; |
| if (!ofnode_read_u32(timings, "vsync-active", &val)) { |
| dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH : |
| DISPLAY_FLAGS_VSYNC_LOW; |
| } |
| if (!ofnode_read_u32(timings, "hsync-active", &val)) { |
| dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH : |
| DISPLAY_FLAGS_HSYNC_LOW; |
| } |
| if (!ofnode_read_u32(timings, "de-active", &val)) { |
| dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH : |
| DISPLAY_FLAGS_DE_LOW; |
| } |
| if (!ofnode_read_u32(timings, "pixelclk-active", &val)) { |
| dt->flags |= val ? DISPLAY_FLAGS_PIXDATA_POSEDGE : |
| DISPLAY_FLAGS_PIXDATA_NEGEDGE; |
| } |
| if (ofnode_read_bool(timings, "interlaced")) |
| dt->flags |= DISPLAY_FLAGS_INTERLACED; |
| if (ofnode_read_bool(timings, "doublescan")) |
| dt->flags |= DISPLAY_FLAGS_DOUBLESCAN; |
| if (ofnode_read_bool(timings, "doubleclk")) |
| dt->flags |= DISPLAY_FLAGS_DOUBLECLK; |
| |
| return ret; |
| } |
| |
| const void *ofnode_get_property(ofnode node, const char *propname, int *lenp) |
| { |
| if (ofnode_is_np(node)) |
| return of_get_property(ofnode_to_np(node), propname, lenp); |
| else |
| return fdt_getprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname, lenp); |
| } |
| |
| bool ofnode_has_property(ofnode node, const char *propname) |
| { |
| if (ofnode_is_np(node)) |
| return of_find_property(ofnode_to_np(node), propname, NULL); |
| else |
| return ofnode_get_property(node, propname, NULL); |
| } |
| |
| int ofnode_first_property(ofnode node, struct ofprop *prop) |
| { |
| prop->node = node; |
| |
| if (ofnode_is_np(node)) { |
| prop->prop = of_get_first_property(ofnode_to_np(prop->node)); |
| if (!prop->prop) |
| return -FDT_ERR_NOTFOUND; |
| } else { |
| prop->offset = |
| fdt_first_property_offset(ofnode_to_fdt(node), |
| ofnode_to_offset(prop->node)); |
| if (prop->offset < 0) |
| return prop->offset; |
| } |
| |
| return 0; |
| } |
| |
| int ofnode_next_property(struct ofprop *prop) |
| { |
| if (ofnode_is_np(prop->node)) { |
| prop->prop = of_get_next_property(ofnode_to_np(prop->node), |
| prop->prop); |
| if (!prop->prop) |
| return -FDT_ERR_NOTFOUND; |
| } else { |
| prop->offset = |
| fdt_next_property_offset(ofnode_to_fdt(prop->node), |
| prop->offset); |
| if (prop->offset < 0) |
| return prop->offset; |
| } |
| |
| return 0; |
| } |
| |
| const void *ofprop_get_property(const struct ofprop *prop, |
| const char **propname, int *lenp) |
| { |
| if (ofnode_is_np(prop->node)) |
| return of_get_property_by_prop(ofnode_to_np(prop->node), |
| prop->prop, propname, lenp); |
| else |
| return fdt_getprop_by_offset(ofnode_to_fdt(prop->node), |
| prop->offset, |
| propname, lenp); |
| } |
| |
| fdt_addr_t ofnode_get_addr_size(ofnode node, const char *property, |
| fdt_size_t *sizep) |
| { |
| if (ofnode_is_np(node)) { |
| int na, ns; |
| int psize; |
| const struct device_node *np = ofnode_to_np(node); |
| const __be32 *prop = of_get_property(np, property, &psize); |
| |
| if (!prop) |
| return FDT_ADDR_T_NONE; |
| na = of_n_addr_cells(np); |
| ns = of_n_size_cells(np); |
| *sizep = of_read_number(prop + na, ns); |
| |
| if (CONFIG_IS_ENABLED(OF_TRANSLATE) && ns > 0) |
| return of_translate_address(np, prop); |
| else |
| return of_read_number(prop, na); |
| } else { |
| return fdtdec_get_addr_size(ofnode_to_fdt(node), |
| ofnode_to_offset(node), property, |
| sizep); |
| } |
| } |
| |
| const uint8_t *ofnode_read_u8_array_ptr(ofnode node, const char *propname, |
| size_t sz) |
| { |
| if (ofnode_is_np(node)) { |
| const struct device_node *np = ofnode_to_np(node); |
| int psize; |
| const __be32 *prop = of_get_property(np, propname, &psize); |
| |
| if (!prop || sz != psize) |
| return NULL; |
| return (uint8_t *)prop; |
| |
| } else { |
| return fdtdec_locate_byte_array(ofnode_to_fdt(node), |
| ofnode_to_offset(node), propname, sz); |
| } |
| } |
| |
| int ofnode_read_pci_addr(ofnode node, enum fdt_pci_space type, |
| const char *propname, struct fdt_pci_addr *addr, |
| fdt_size_t *size) |
| { |
| const fdt32_t *cell; |
| int len; |
| int ret = -ENOENT; |
| |
| debug("%s: %s: ", __func__, propname); |
| |
| /* |
| * If we follow the pci bus bindings strictly, we should check |
| * the value of the node's parent node's #address-cells and |
| * #size-cells. They need to be 3 and 2 accordingly. However, |
| * for simplicity we skip the check here. |
| */ |
| cell = ofnode_get_property(node, propname, &len); |
| if (!cell) |
| goto fail; |
| |
| if ((len % FDT_PCI_REG_SIZE) == 0) { |
| int num = len / FDT_PCI_REG_SIZE; |
| int i; |
| |
| for (i = 0; i < num; i++) { |
| debug("pci address #%d: %08lx %08lx %08lx\n", i, |
| (ulong)fdt32_to_cpu(cell[0]), |
| (ulong)fdt32_to_cpu(cell[1]), |
| (ulong)fdt32_to_cpu(cell[2])); |
| if ((fdt32_to_cpu(*cell) & type) == type) { |
| const unaligned_fdt64_t *ptr; |
| |
| addr->phys_hi = fdt32_to_cpu(cell[0]); |
| addr->phys_mid = fdt32_to_cpu(cell[1]); |
| addr->phys_lo = fdt32_to_cpu(cell[2]); |
| ptr = (const unaligned_fdt64_t *)(cell + 3); |
| if (size) |
| *size = fdt64_to_cpu(*ptr); |
| break; |
| } |
| |
| cell += FDT_PCI_ADDR_CELLS + FDT_PCI_SIZE_CELLS; |
| } |
| |
| if (i == num) { |
| ret = -ENXIO; |
| goto fail; |
| } |
| |
| return 0; |
| } |
| |
| ret = -EINVAL; |
| |
| fail: |
| debug("(not found)\n"); |
| return ret; |
| } |
| |
| int ofnode_read_pci_vendev(ofnode node, u16 *vendor, u16 *device) |
| { |
| const char *list, *end; |
| int len; |
| |
| list = ofnode_get_property(node, "compatible", &len); |
| if (!list) |
| return -ENOENT; |
| |
| end = list + len; |
| while (list < end) { |
| len = strlen(list); |
| if (len >= strlen("pciVVVV,DDDD")) { |
| char *s = strstr(list, "pci"); |
| |
| /* |
| * check if the string is something like pciVVVV,DDDD.RR |
| * or just pciVVVV,DDDD |
| */ |
| if (s && s[7] == ',' && |
| (s[12] == '.' || s[12] == 0)) { |
| s += 3; |
| *vendor = simple_strtol(s, NULL, 16); |
| |
| s += 5; |
| *device = simple_strtol(s, NULL, 16); |
| |
| return 0; |
| } |
| } |
| list += (len + 1); |
| } |
| |
| return -ENOENT; |
| } |
| |
| int ofnode_read_eth_phy_id(ofnode node, u16 *vendor, u16 *device) |
| { |
| const char *list, *end; |
| int len; |
| |
| list = ofnode_get_property(node, "compatible", &len); |
| |
| if (!list) |
| return -ENOENT; |
| |
| end = list + len; |
| while (list < end) { |
| len = strlen(list); |
| |
| if (len >= strlen("ethernet-phy-idVVVV.DDDD")) { |
| char *s = strstr(list, "ethernet-phy-id"); |
| |
| /* |
| * check if the string is something like |
| * ethernet-phy-idVVVV.DDDD |
| */ |
| if (s && s[19] == '.') { |
| s += strlen("ethernet-phy-id"); |
| *vendor = simple_strtol(s, NULL, 16); |
| s += 5; |
| *device = simple_strtol(s, NULL, 16); |
| |
| return 0; |
| } |
| } |
| list += (len + 1); |
| } |
| |
| return -ENOENT; |
| } |
| |
| int ofnode_read_addr_cells(ofnode node) |
| { |
| if (ofnode_is_np(node)) { |
| return of_n_addr_cells(ofnode_to_np(node)); |
| } else { |
| int parent = fdt_parent_offset(ofnode_to_fdt(node), |
| ofnode_to_offset(node)); |
| |
| return fdt_address_cells(ofnode_to_fdt(node), parent); |
| } |
| } |
| |
| int ofnode_read_size_cells(ofnode node) |
| { |
| if (ofnode_is_np(node)) { |
| return of_n_size_cells(ofnode_to_np(node)); |
| } else { |
| int parent = fdt_parent_offset(ofnode_to_fdt(node), |
| ofnode_to_offset(node)); |
| |
| return fdt_size_cells(ofnode_to_fdt(node), parent); |
| } |
| } |
| |
| int ofnode_read_simple_addr_cells(ofnode node) |
| { |
| if (ofnode_is_np(node)) |
| return of_simple_addr_cells(ofnode_to_np(node)); |
| else |
| return fdt_address_cells(ofnode_to_fdt(node), |
| ofnode_to_offset(node)); |
| } |
| |
| int ofnode_read_simple_size_cells(ofnode node) |
| { |
| if (ofnode_is_np(node)) |
| return of_simple_size_cells(ofnode_to_np(node)); |
| else |
| return fdt_size_cells(ofnode_to_fdt(node), |
| ofnode_to_offset(node)); |
| } |
| |
| bool ofnode_pre_reloc(ofnode node) |
| { |
| #if defined(CONFIG_SPL_BUILD) || defined(CONFIG_TPL_BUILD) |
| /* for SPL and TPL the remaining nodes after the fdtgrep 1st pass |
| * had property bootph-all or bootph-pre-sram/bootph-pre-ram. |
| * They are removed in final dtb (fdtgrep 2nd pass) |
| */ |
| return true; |
| #else |
| if (ofnode_read_bool(node, "bootph-all")) |
| return true; |
| if (ofnode_read_bool(node, "bootph-some-ram")) |
| return true; |
| |
| /* |
| * In regular builds individual spl and tpl handling both |
| * count as handled pre-relocation for later second init. |
| */ |
| if (ofnode_read_bool(node, "bootph-pre-ram") || |
| ofnode_read_bool(node, "bootph-pre-sram")) |
| return gd->flags & GD_FLG_RELOC; |
| |
| if (IS_ENABLED(CONFIG_OF_TAG_MIGRATE)) { |
| /* detect and handle old tags */ |
| if (ofnode_read_bool(node, "u-boot,dm-pre-reloc") || |
| ofnode_read_bool(node, "u-boot,dm-pre-proper") || |
| ofnode_read_bool(node, "u-boot,dm-spl") || |
| ofnode_read_bool(node, "u-boot,dm-tpl") || |
| ofnode_read_bool(node, "u-boot,dm-vpl")) { |
| gd->flags |= GD_FLG_OF_TAG_MIGRATE; |
| return true; |
| } |
| } |
| |
| return false; |
| #endif |
| } |
| |
| int ofnode_read_resource(ofnode node, uint index, struct resource *res) |
| { |
| if (ofnode_is_np(node)) { |
| return of_address_to_resource(ofnode_to_np(node), index, res); |
| } else { |
| struct fdt_resource fres; |
| int ret; |
| |
| ret = fdt_get_resource(ofnode_to_fdt(node), |
| ofnode_to_offset(node), |
| "reg", index, &fres); |
| if (ret < 0) |
| return -EINVAL; |
| memset(res, '\0', sizeof(*res)); |
| res->start = fres.start; |
| res->end = fres.end; |
| |
| return 0; |
| } |
| } |
| |
| int ofnode_read_resource_byname(ofnode node, const char *name, |
| struct resource *res) |
| { |
| int index; |
| |
| index = ofnode_stringlist_search(node, "reg-names", name); |
| if (index < 0) |
| return index; |
| |
| return ofnode_read_resource(node, index, res); |
| } |
| |
| u64 ofnode_translate_address(ofnode node, const fdt32_t *in_addr) |
| { |
| if (ofnode_is_np(node)) |
| return of_translate_address(ofnode_to_np(node), in_addr); |
| else |
| return fdt_translate_address(ofnode_to_fdt(node), |
| ofnode_to_offset(node), in_addr); |
| } |
| |
| u64 ofnode_translate_dma_address(ofnode node, const fdt32_t *in_addr) |
| { |
| if (ofnode_is_np(node)) |
| return of_translate_dma_address(ofnode_to_np(node), in_addr); |
| else |
| return fdt_translate_dma_address(ofnode_to_fdt(node), |
| ofnode_to_offset(node), in_addr); |
| } |
| |
| int ofnode_get_dma_range(ofnode node, phys_addr_t *cpu, dma_addr_t *bus, u64 *size) |
| { |
| if (ofnode_is_np(node)) |
| return of_get_dma_range(ofnode_to_np(node), cpu, bus, size); |
| else |
| return fdt_get_dma_range(ofnode_to_fdt(node), |
| ofnode_to_offset(node), |
| cpu, bus, size); |
| } |
| |
| int ofnode_device_is_compatible(ofnode node, const char *compat) |
| { |
| if (ofnode_is_np(node)) |
| return of_device_is_compatible(ofnode_to_np(node), compat, |
| NULL, NULL); |
| else |
| return !fdt_node_check_compatible(ofnode_to_fdt(node), |
| ofnode_to_offset(node), |
| compat); |
| } |
| |
| ofnode ofnode_by_compatible(ofnode from, const char *compat) |
| { |
| if (of_live_active()) { |
| return np_to_ofnode(of_find_compatible_node( |
| (struct device_node *)ofnode_to_np(from), NULL, |
| compat)); |
| } else { |
| return noffset_to_ofnode(from, |
| fdt_node_offset_by_compatible(ofnode_to_fdt(from), |
| ofnode_to_offset(from), compat)); |
| } |
| } |
| |
| ofnode ofnode_by_prop_value(ofnode from, const char *propname, |
| const void *propval, int proplen) |
| { |
| if (of_live_active()) { |
| return np_to_ofnode(of_find_node_by_prop_value( |
| (struct device_node *)ofnode_to_np(from), propname, |
| propval, proplen)); |
| } else { |
| return noffset_to_ofnode(from, |
| fdt_node_offset_by_prop_value(ofnode_to_fdt(from), |
| ofnode_to_offset(from), propname, propval, |
| proplen)); |
| } |
| } |
| |
| int ofnode_write_prop(ofnode node, const char *propname, const void *value, |
| int len, bool copy) |
| { |
| if (of_live_active()) { |
| void *newval; |
| int ret; |
| |
| if (copy) { |
| newval = malloc(len); |
| if (!newval) |
| return log_ret(-ENOMEM); |
| memcpy(newval, value, len); |
| value = newval; |
| } |
| ret = of_write_prop(ofnode_to_np(node), propname, len, value); |
| if (ret && copy) |
| free(newval); |
| return ret; |
| } else { |
| return fdt_setprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname, value, len); |
| } |
| } |
| |
| int ofnode_write_string(ofnode node, const char *propname, const char *value) |
| { |
| assert(ofnode_valid(node)); |
| |
| debug("%s: %s = %s", __func__, propname, value); |
| |
| return ofnode_write_prop(node, propname, value, strlen(value) + 1, |
| false); |
| } |
| |
| int ofnode_write_u32(ofnode node, const char *propname, u32 value) |
| { |
| fdt32_t *val; |
| |
| assert(ofnode_valid(node)); |
| |
| log_debug("%s = %x", propname, value); |
| val = malloc(sizeof(*val)); |
| if (!val) |
| return -ENOMEM; |
| *val = cpu_to_fdt32(value); |
| |
| return ofnode_write_prop(node, propname, val, sizeof(value), true); |
| } |
| |
| int ofnode_write_u64(ofnode node, const char *propname, u64 value) |
| { |
| fdt64_t *val; |
| |
| assert(ofnode_valid(node)); |
| |
| log_debug("%s = %llx", propname, (unsigned long long)value); |
| val = malloc(sizeof(*val)); |
| if (!val) |
| return -ENOMEM; |
| *val = cpu_to_fdt64(value); |
| |
| return ofnode_write_prop(node, propname, val, sizeof(value), true); |
| } |
| |
| int ofnode_write_bool(ofnode node, const char *propname, bool value) |
| { |
| if (value) |
| return ofnode_write_prop(node, propname, NULL, 0, false); |
| else |
| return ofnode_delete_prop(node, propname); |
| } |
| |
| int ofnode_delete_prop(ofnode node, const char *propname) |
| { |
| if (ofnode_is_np(node)) { |
| struct property *prop; |
| int len; |
| |
| prop = of_find_property(ofnode_to_np(node), propname, &len); |
| if (prop) |
| return of_remove_property(ofnode_to_np(node), prop); |
| return 0; |
| } else { |
| return fdt_delprop(ofnode_to_fdt(node), ofnode_to_offset(node), |
| propname); |
| } |
| } |
| |
| int ofnode_set_enabled(ofnode node, bool value) |
| { |
| assert(ofnode_valid(node)); |
| |
| if (value) |
| return ofnode_write_string(node, "status", "okay"); |
| else |
| return ofnode_write_string(node, "status", "disabled"); |
| } |
| |
| bool ofnode_conf_read_bool(const char *prop_name) |
| { |
| ofnode node; |
| |
| node = ofnode_path("/config"); |
| if (!ofnode_valid(node)) |
| return false; |
| |
| return ofnode_read_bool(node, prop_name); |
| } |
| |
| int ofnode_conf_read_int(const char *prop_name, int default_val) |
| { |
| ofnode node; |
| |
| node = ofnode_path("/config"); |
| if (!ofnode_valid(node)) |
| return default_val; |
| |
| return ofnode_read_u32_default(node, prop_name, default_val); |
| } |
| |
| const char *ofnode_conf_read_str(const char *prop_name) |
| { |
| ofnode node; |
| |
| node = ofnode_path("/config"); |
| if (!ofnode_valid(node)) |
| return NULL; |
| |
| return ofnode_read_string(node, prop_name); |
| } |
| |
| int ofnode_read_bootscript_address(u64 *bootscr_address, u64 *bootscr_offset) |
| { |
| int ret; |
| ofnode uboot; |
| |
| *bootscr_address = 0; |
| *bootscr_offset = 0; |
| |
| uboot = ofnode_path("/options/u-boot"); |
| if (!ofnode_valid(uboot)) { |
| debug("%s: Missing /u-boot node\n", __func__); |
| return -EINVAL; |
| } |
| |
| ret = ofnode_read_u64(uboot, "bootscr-address", bootscr_address); |
| if (ret) { |
| ret = ofnode_read_u64(uboot, "bootscr-ram-offset", |
| bootscr_offset); |
| if (ret) |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| int ofnode_read_bootscript_flash(u64 *bootscr_flash_offset, |
| u64 *bootscr_flash_size) |
| { |
| int ret; |
| ofnode uboot; |
| |
| *bootscr_flash_offset = 0; |
| *bootscr_flash_size = 0; |
| |
| uboot = ofnode_path("/options/u-boot"); |
| if (!ofnode_valid(uboot)) { |
| debug("%s: Missing /u-boot node\n", __func__); |
| return -EINVAL; |
| } |
| |
| ret = ofnode_read_u64(uboot, "bootscr-flash-offset", |
| bootscr_flash_offset); |
| if (ret) |
| return -EINVAL; |
| |
| ret = ofnode_read_u64(uboot, "bootscr-flash-size", |
| bootscr_flash_size); |
| if (ret) |
| return -EINVAL; |
| |
| if (!bootscr_flash_size) { |
| debug("bootscr-flash-size is zero. Ignoring properties!\n"); |
| *bootscr_flash_offset = 0; |
| return -EINVAL; |
| } |
| |
| return 0; |
| } |
| |
| ofnode ofnode_get_phy_node(ofnode node) |
| { |
| /* DT node properties that reference a PHY node */ |
| static const char * const phy_handle_str[] = { |
| "phy-handle", "phy", "phy-device", |
| }; |
| struct ofnode_phandle_args args = { |
| .node = ofnode_null() |
| }; |
| int i; |
| |
| assert(ofnode_valid(node)); |
| |
| for (i = 0; i < ARRAY_SIZE(phy_handle_str); i++) |
| if (!ofnode_parse_phandle_with_args(node, phy_handle_str[i], |
| NULL, 0, 0, &args)) |
| break; |
| |
| return args.node; |
| } |
| |
| phy_interface_t ofnode_read_phy_mode(ofnode node) |
| { |
| const char *mode; |
| int i; |
| |
| assert(ofnode_valid(node)); |
| |
| mode = ofnode_read_string(node, "phy-mode"); |
| if (!mode) |
| mode = ofnode_read_string(node, "phy-connection-type"); |
| |
| if (!mode) |
| return PHY_INTERFACE_MODE_NA; |
| |
| for (i = 0; i < PHY_INTERFACE_MODE_MAX; i++) |
| if (!strcmp(mode, phy_interface_strings[i])) |
| return i; |
| |
| debug("%s: Invalid PHY interface '%s'\n", __func__, mode); |
| |
| return PHY_INTERFACE_MODE_NA; |
| } |
| |
| int ofnode_add_subnode(ofnode node, const char *name, ofnode *subnodep) |
| { |
| ofnode subnode; |
| int ret = 0; |
| |
| assert(ofnode_valid(node)); |
| |
| if (ofnode_is_np(node)) { |
| struct device_node *np, *child; |
| |
| np = (struct device_node *)ofnode_to_np(node); |
| ret = of_add_subnode(np, name, -1, &child); |
| if (ret && ret != -EEXIST) |
| return ret; |
| subnode = np_to_ofnode(child); |
| } else { |
| void *fdt = ofnode_to_fdt(node); |
| int poffset = ofnode_to_offset(node); |
| int offset; |
| |
| offset = fdt_add_subnode(fdt, poffset, name); |
| if (offset == -FDT_ERR_EXISTS) { |
| offset = fdt_subnode_offset(fdt, poffset, name); |
| ret = -EEXIST; |
| } |
| if (offset < 0) |
| return -EINVAL; |
| subnode = noffset_to_ofnode(node, offset); |
| } |
| |
| *subnodep = subnode; |
| |
| return ret; /* 0 or -EEXIST */ |
| } |
| |
| int ofnode_delete(ofnode *nodep) |
| { |
| ofnode node = *nodep; |
| int ret; |
| |
| assert(ofnode_valid(node)); |
| if (ofnode_is_np(node)) { |
| ret = of_remove_node(ofnode_to_np(node)); |
| } else { |
| void *fdt = ofnode_to_fdt(node); |
| int offset = ofnode_to_offset(node); |
| |
| ret = fdt_del_node(fdt, offset); |
| if (ret) |
| ret = -EFAULT; |
| } |
| if (ret) |
| return ret; |
| *nodep = ofnode_null(); |
| |
| return 0; |
| } |
| |
| int ofnode_copy_props(ofnode dst, ofnode src) |
| { |
| struct ofprop prop; |
| |
| ofnode_for_each_prop(prop, src) { |
| const char *name; |
| const char *val; |
| int len, ret; |
| |
| val = ofprop_get_property(&prop, &name, &len); |
| if (!val) { |
| log_debug("Cannot read prop (err=%d)\n", len); |
| return log_msg_ret("get", -EINVAL); |
| } |
| ret = ofnode_write_prop(dst, name, val, len, true); |
| if (ret) { |
| log_debug("Cannot write prop (err=%d)\n", ret); |
| return log_msg_ret("wr", -EINVAL); |
| } |
| } |
| |
| return 0; |
| } |
| |
| int ofnode_copy_node(ofnode dst_parent, const char *name, ofnode src, |
| ofnode *nodep) |
| { |
| ofnode node; |
| int ret; |
| |
| ret = ofnode_add_subnode(dst_parent, name, &node); |
| if (ret) { |
| if (ret == -EEXIST) |
| *nodep = node; |
| return log_msg_ret("add", ret); |
| } |
| ret = ofnode_copy_props(node, src); |
| if (ret) |
| return log_msg_ret("cpy", ret); |
| *nodep = node; |
| |
| return 0; |
| } |