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![Kever Yang](/assets/img/avatar_default.png)
In some case with LIVE DT, some node always not valid, or not have a valid name, eg. blk driver add by mmc. Return fail instead of Assert for this kind of ofnode, and this help with assert happen from time to time when of_live is enabled and DEBUG is enabled. Signed-off-by: Kever Yang <kever.yang@rock-chips.com> Reviewed-by: Simon Glass <sjg@chromium.org>
893 lines
20 KiB
C
893 lines
20 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (c) 2017 Google, Inc
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* Written by Simon Glass <sjg@chromium.org>
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*/
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#include <common.h>
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#include <dm.h>
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#include <fdtdec.h>
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#include <fdt_support.h>
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#include <linux/libfdt.h>
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#include <dm/of_access.h>
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#include <dm/of_addr.h>
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#include <dm/ofnode.h>
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#include <linux/err.h>
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#include <linux/ioport.h>
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int ofnode_read_u32(ofnode node, const char *propname, u32 *outp)
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{
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assert(ofnode_valid(node));
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debug("%s: %s: ", __func__, propname);
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if (ofnode_is_np(node)) {
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return of_read_u32(ofnode_to_np(node), propname, outp);
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} else {
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const fdt32_t *cell;
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int len;
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cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
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propname, &len);
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if (!cell || len < sizeof(int)) {
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debug("(not found)\n");
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return -EINVAL;
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}
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*outp = fdt32_to_cpu(cell[0]);
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}
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debug("%#x (%d)\n", *outp, *outp);
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return 0;
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}
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u32 ofnode_read_u32_default(ofnode node, const char *propname, u32 def)
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{
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assert(ofnode_valid(node));
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ofnode_read_u32(node, propname, &def);
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return def;
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}
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int ofnode_read_s32_default(ofnode node, const char *propname, s32 def)
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{
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assert(ofnode_valid(node));
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ofnode_read_u32(node, propname, (u32 *)&def);
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return def;
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}
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int ofnode_read_u64(ofnode node, const char *propname, u64 *outp)
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{
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const fdt64_t *cell;
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int len;
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assert(ofnode_valid(node));
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debug("%s: %s: ", __func__, propname);
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if (ofnode_is_np(node))
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return of_read_u64(ofnode_to_np(node), propname, outp);
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cell = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
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&len);
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if (!cell || len < sizeof(*cell)) {
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debug("(not found)\n");
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return -EINVAL;
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}
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*outp = fdt64_to_cpu(cell[0]);
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debug("%#llx (%lld)\n", (unsigned long long)*outp,
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(unsigned long long)*outp);
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return 0;
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}
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int ofnode_read_u64_default(ofnode node, const char *propname, u64 def)
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{
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assert(ofnode_valid(node));
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ofnode_read_u64(node, propname, &def);
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return def;
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}
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bool ofnode_read_bool(ofnode node, const char *propname)
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{
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const void *prop;
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assert(ofnode_valid(node));
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debug("%s: %s: ", __func__, propname);
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prop = ofnode_get_property(node, propname, NULL);
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debug("%s\n", prop ? "true" : "false");
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return prop ? true : false;
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}
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const char *ofnode_read_string(ofnode node, const char *propname)
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{
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const char *str = NULL;
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int len = -1;
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assert(ofnode_valid(node));
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debug("%s: %s: ", __func__, propname);
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if (ofnode_is_np(node)) {
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struct property *prop = of_find_property(
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ofnode_to_np(node), propname, NULL);
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if (prop) {
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str = prop->value;
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len = prop->length;
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}
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} else {
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str = fdt_getprop(gd->fdt_blob, ofnode_to_offset(node),
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propname, &len);
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}
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if (!str) {
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debug("<not found>\n");
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return NULL;
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}
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if (strnlen(str, len) >= len) {
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debug("<invalid>\n");
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return NULL;
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}
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debug("%s\n", str);
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return str;
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}
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ofnode ofnode_find_subnode(ofnode node, const char *subnode_name)
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{
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ofnode subnode;
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assert(ofnode_valid(node));
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debug("%s: %s: ", __func__, subnode_name);
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if (ofnode_is_np(node)) {
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const struct device_node *np = ofnode_to_np(node);
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for (np = np->child; np; np = np->sibling) {
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if (!strcmp(subnode_name, np->name))
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break;
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}
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subnode = np_to_ofnode(np);
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} else {
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int ooffset = fdt_subnode_offset(gd->fdt_blob,
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ofnode_to_offset(node), subnode_name);
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subnode = offset_to_ofnode(ooffset);
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}
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debug("%s\n", ofnode_valid(subnode) ?
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ofnode_get_name(subnode) : "<none>");
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return subnode;
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}
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int ofnode_read_u32_array(ofnode node, const char *propname,
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u32 *out_values, size_t sz)
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{
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assert(ofnode_valid(node));
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debug("%s: %s: ", __func__, propname);
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if (ofnode_is_np(node)) {
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return of_read_u32_array(ofnode_to_np(node), propname,
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out_values, sz);
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} else {
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return fdtdec_get_int_array(gd->fdt_blob,
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ofnode_to_offset(node), propname,
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out_values, sz);
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}
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}
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ofnode ofnode_first_subnode(ofnode node)
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{
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assert(ofnode_valid(node));
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if (ofnode_is_np(node))
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return np_to_ofnode(node.np->child);
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return offset_to_ofnode(
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fdt_first_subnode(gd->fdt_blob, ofnode_to_offset(node)));
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}
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ofnode ofnode_next_subnode(ofnode node)
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{
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assert(ofnode_valid(node));
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if (ofnode_is_np(node))
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return np_to_ofnode(node.np->sibling);
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return offset_to_ofnode(
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fdt_next_subnode(gd->fdt_blob, ofnode_to_offset(node)));
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}
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ofnode ofnode_get_parent(ofnode node)
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{
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ofnode parent;
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assert(ofnode_valid(node));
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if (ofnode_is_np(node))
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parent = np_to_ofnode(of_get_parent(ofnode_to_np(node)));
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else
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parent.of_offset = fdt_parent_offset(gd->fdt_blob,
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ofnode_to_offset(node));
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return parent;
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}
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const char *ofnode_get_name(ofnode node)
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{
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if (!ofnode_valid(node)) {
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debug("%s node not valid\n", __func__);
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return NULL;
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}
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if (ofnode_is_np(node))
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return strrchr(node.np->full_name, '/') + 1;
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return fdt_get_name(gd->fdt_blob, ofnode_to_offset(node), NULL);
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}
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ofnode ofnode_get_by_phandle(uint phandle)
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{
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ofnode node;
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if (of_live_active())
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node = np_to_ofnode(of_find_node_by_phandle(phandle));
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else
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node.of_offset = fdt_node_offset_by_phandle(gd->fdt_blob,
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phandle);
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return node;
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}
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int ofnode_read_size(ofnode node, const char *propname)
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{
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int len;
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if (ofnode_is_np(node)) {
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struct property *prop = of_find_property(
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ofnode_to_np(node), propname, NULL);
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if (prop)
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return prop->length;
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} else {
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if (fdt_getprop(gd->fdt_blob, ofnode_to_offset(node), propname,
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&len))
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return len;
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}
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return -EINVAL;
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}
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fdt_addr_t ofnode_get_addr_size_index(ofnode node, int index, fdt_size_t *size)
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{
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int na, ns;
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if (ofnode_is_np(node)) {
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const __be32 *prop_val;
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uint flags;
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prop_val = of_get_address(ofnode_to_np(node), index,
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(u64 *)size, &flags);
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if (!prop_val)
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return FDT_ADDR_T_NONE;
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ns = of_n_size_cells(ofnode_to_np(node));
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if (IS_ENABLED(CONFIG_OF_TRANSLATE) && ns > 0) {
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return of_translate_address(ofnode_to_np(node), prop_val);
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} else {
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na = of_n_addr_cells(ofnode_to_np(node));
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return of_read_number(prop_val, na);
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}
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} else {
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na = ofnode_read_simple_addr_cells(ofnode_get_parent(node));
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ns = ofnode_read_simple_size_cells(ofnode_get_parent(node));
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return fdtdec_get_addr_size_fixed(gd->fdt_blob,
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ofnode_to_offset(node), "reg",
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index, na, ns, size, true);
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}
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return FDT_ADDR_T_NONE;
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}
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fdt_addr_t ofnode_get_addr_index(ofnode node, int index)
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{
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fdt_size_t size;
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return ofnode_get_addr_size_index(node, index, &size);
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}
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fdt_addr_t ofnode_get_addr(ofnode node)
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{
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return ofnode_get_addr_index(node, 0);
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}
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int ofnode_stringlist_search(ofnode node, const char *property,
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const char *string)
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{
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if (ofnode_is_np(node)) {
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return of_property_match_string(ofnode_to_np(node),
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property, string);
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} else {
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int ret;
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ret = fdt_stringlist_search(gd->fdt_blob,
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ofnode_to_offset(node), property,
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string);
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if (ret == -FDT_ERR_NOTFOUND)
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return -ENODATA;
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else if (ret < 0)
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return -EINVAL;
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return ret;
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}
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}
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int ofnode_read_string_index(ofnode node, const char *property, int index,
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const char **outp)
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{
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if (ofnode_is_np(node)) {
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return of_property_read_string_index(ofnode_to_np(node),
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property, index, outp);
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} else {
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int len;
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*outp = fdt_stringlist_get(gd->fdt_blob, ofnode_to_offset(node),
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property, index, &len);
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if (len < 0)
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return -EINVAL;
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return 0;
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}
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}
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int ofnode_read_string_count(ofnode node, const char *property)
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{
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if (ofnode_is_np(node)) {
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return of_property_count_strings(ofnode_to_np(node), property);
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} else {
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return fdt_stringlist_count(gd->fdt_blob,
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ofnode_to_offset(node), property);
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}
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}
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static void ofnode_from_fdtdec_phandle_args(struct fdtdec_phandle_args *in,
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struct ofnode_phandle_args *out)
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{
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assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
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out->node = offset_to_ofnode(in->node);
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out->args_count = in->args_count;
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memcpy(out->args, in->args, sizeof(out->args));
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}
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static void ofnode_from_of_phandle_args(struct of_phandle_args *in,
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struct ofnode_phandle_args *out)
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{
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assert(OF_MAX_PHANDLE_ARGS == MAX_PHANDLE_ARGS);
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out->node = np_to_ofnode(in->np);
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out->args_count = in->args_count;
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memcpy(out->args, in->args, sizeof(out->args));
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}
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int ofnode_parse_phandle_with_args(ofnode node, const char *list_name,
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const char *cells_name, int cell_count,
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int index,
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struct ofnode_phandle_args *out_args)
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{
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if (ofnode_is_np(node)) {
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struct of_phandle_args args;
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int ret;
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ret = of_parse_phandle_with_args(ofnode_to_np(node),
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list_name, cells_name, index,
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&args);
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if (ret)
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return ret;
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ofnode_from_of_phandle_args(&args, out_args);
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} else {
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struct fdtdec_phandle_args args;
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int ret;
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ret = fdtdec_parse_phandle_with_args(gd->fdt_blob,
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ofnode_to_offset(node),
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list_name, cells_name,
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cell_count, index, &args);
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if (ret)
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return ret;
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ofnode_from_fdtdec_phandle_args(&args, out_args);
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}
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return 0;
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}
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int ofnode_count_phandle_with_args(ofnode node, const char *list_name,
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const char *cells_name)
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{
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if (ofnode_is_np(node))
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return of_count_phandle_with_args(ofnode_to_np(node),
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list_name, cells_name);
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else
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return fdtdec_parse_phandle_with_args(gd->fdt_blob,
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ofnode_to_offset(node), list_name, cells_name,
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0, -1, NULL);
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}
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ofnode ofnode_path(const char *path)
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{
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if (of_live_active())
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return np_to_ofnode(of_find_node_by_path(path));
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else
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return offset_to_ofnode(fdt_path_offset(gd->fdt_blob, path));
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}
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const char *ofnode_get_chosen_prop(const char *name)
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{
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ofnode chosen_node;
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chosen_node = ofnode_path("/chosen");
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return ofnode_read_string(chosen_node, name);
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}
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ofnode ofnode_get_chosen_node(const char *name)
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{
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const char *prop;
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prop = ofnode_get_chosen_prop(name);
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if (!prop)
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return ofnode_null();
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return ofnode_path(prop);
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}
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static int decode_timing_property(ofnode node, const char *name,
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struct timing_entry *result)
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{
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int length, ret = 0;
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length = ofnode_read_size(node, name);
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if (length < 0) {
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debug("%s: could not find property %s\n",
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ofnode_get_name(node), name);
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return length;
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}
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if (length == sizeof(u32)) {
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result->typ = ofnode_read_u32_default(node, name, 0);
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result->min = result->typ;
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result->max = result->typ;
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} else {
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ret = ofnode_read_u32_array(node, name, &result->min, 3);
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}
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return ret;
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}
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int ofnode_decode_display_timing(ofnode parent, int index,
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struct display_timing *dt)
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{
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int i;
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ofnode timings, node;
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u32 val = 0;
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int ret = 0;
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timings = ofnode_find_subnode(parent, "display-timings");
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if (!ofnode_valid(timings))
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return -EINVAL;
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i = 0;
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ofnode_for_each_subnode(node, timings) {
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if (i++ == index)
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break;
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}
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if (!ofnode_valid(node))
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return -EINVAL;
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memset(dt, 0, sizeof(*dt));
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ret |= decode_timing_property(node, "hback-porch", &dt->hback_porch);
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ret |= decode_timing_property(node, "hfront-porch", &dt->hfront_porch);
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ret |= decode_timing_property(node, "hactive", &dt->hactive);
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ret |= decode_timing_property(node, "hsync-len", &dt->hsync_len);
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ret |= decode_timing_property(node, "vback-porch", &dt->vback_porch);
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ret |= decode_timing_property(node, "vfront-porch", &dt->vfront_porch);
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ret |= decode_timing_property(node, "vactive", &dt->vactive);
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ret |= decode_timing_property(node, "vsync-len", &dt->vsync_len);
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ret |= decode_timing_property(node, "clock-frequency", &dt->pixelclock);
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dt->flags = 0;
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val = ofnode_read_u32_default(node, "vsync-active", -1);
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if (val != -1) {
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dt->flags |= val ? DISPLAY_FLAGS_VSYNC_HIGH :
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DISPLAY_FLAGS_VSYNC_LOW;
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}
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val = ofnode_read_u32_default(node, "hsync-active", -1);
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if (val != -1) {
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dt->flags |= val ? DISPLAY_FLAGS_HSYNC_HIGH :
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DISPLAY_FLAGS_HSYNC_LOW;
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}
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val = ofnode_read_u32_default(node, "de-active", -1);
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if (val != -1) {
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dt->flags |= val ? DISPLAY_FLAGS_DE_HIGH :
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DISPLAY_FLAGS_DE_LOW;
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}
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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;
|
|
}
|
|
|
|
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(gd->fdt_blob, ofnode_to_offset(node),
|
|
propname, lenp);
|
|
}
|
|
|
|
bool ofnode_is_available(ofnode node)
|
|
{
|
|
if (ofnode_is_np(node))
|
|
return of_device_is_available(ofnode_to_np(node));
|
|
else
|
|
return fdtdec_get_is_enabled(gd->fdt_blob,
|
|
ofnode_to_offset(node));
|
|
}
|
|
|
|
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(gd->fdt_blob,
|
|
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(gd->fdt_blob,
|
|
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)
|
|
{
|
|
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) {
|
|
addr->phys_hi = fdt32_to_cpu(cell[0]);
|
|
addr->phys_mid = fdt32_to_cpu(cell[1]);
|
|
addr->phys_lo = fdt32_to_cpu(cell[1]);
|
|
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_addr_cells(ofnode node)
|
|
{
|
|
if (ofnode_is_np(node))
|
|
return of_n_addr_cells(ofnode_to_np(node));
|
|
else /* NOTE: this call should walk up the parent stack */
|
|
return fdt_address_cells(gd->fdt_blob, ofnode_to_offset(node));
|
|
}
|
|
|
|
int ofnode_read_size_cells(ofnode node)
|
|
{
|
|
if (ofnode_is_np(node))
|
|
return of_n_size_cells(ofnode_to_np(node));
|
|
else /* NOTE: this call should walk up the parent stack */
|
|
return fdt_size_cells(gd->fdt_blob, ofnode_to_offset(node));
|
|
}
|
|
|
|
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(gd->fdt_blob, 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(gd->fdt_blob, 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 dm-pre-reloc or u-boot,dm-spl/tpl.
|
|
* They are removed in final dtb (fdtgrep 2nd pass)
|
|
*/
|
|
return true;
|
|
#else
|
|
if (ofnode_read_bool(node, "u-boot,dm-pre-reloc"))
|
|
return true;
|
|
if (ofnode_read_bool(node, "u-boot,dm-pre-proper"))
|
|
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, "u-boot,dm-spl") ||
|
|
ofnode_read_bool(node, "u-boot,dm-tpl"))
|
|
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(gd->fdt_blob, 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(gd->fdt_blob, 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(gd->fdt_blob, ofnode_to_offset(node), in_addr);
|
|
}
|
|
|
|
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(gd->fdt_blob,
|
|
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 offset_to_ofnode(fdt_node_offset_by_compatible(
|
|
gd->fdt_blob, 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 offset_to_ofnode(fdt_node_offset_by_prop_value(
|
|
gd->fdt_blob, ofnode_to_offset(from),
|
|
propname, propval, proplen));
|
|
}
|
|
}
|
|
|
|
int ofnode_write_prop(ofnode node, const char *propname, int len,
|
|
const void *value)
|
|
{
|
|
const struct device_node *np = ofnode_to_np(node);
|
|
struct property *pp;
|
|
struct property *pp_last = NULL;
|
|
struct property *new;
|
|
|
|
if (!of_live_active())
|
|
return -ENOSYS;
|
|
|
|
if (!np)
|
|
return -EINVAL;
|
|
|
|
for (pp = np->properties; pp; pp = pp->next) {
|
|
if (strcmp(pp->name, propname) == 0) {
|
|
/* Property exists -> change value */
|
|
pp->value = (void *)value;
|
|
pp->length = len;
|
|
return 0;
|
|
}
|
|
pp_last = pp;
|
|
}
|
|
|
|
if (!pp_last)
|
|
return -ENOENT;
|
|
|
|
/* Property does not exist -> append new property */
|
|
new = malloc(sizeof(struct property));
|
|
if (!new)
|
|
return -ENOMEM;
|
|
|
|
new->name = strdup(propname);
|
|
if (!new->name) {
|
|
free(new);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
new->value = (void *)value;
|
|
new->length = len;
|
|
new->next = NULL;
|
|
|
|
pp_last->next = new;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int ofnode_write_string(ofnode node, const char *propname, const char *value)
|
|
{
|
|
if (!of_live_active())
|
|
return -ENOSYS;
|
|
|
|
assert(ofnode_valid(node));
|
|
|
|
debug("%s: %s = %s", __func__, propname, value);
|
|
|
|
return ofnode_write_prop(node, propname, strlen(value) + 1, value);
|
|
}
|
|
|
|
int ofnode_set_enabled(ofnode node, bool value)
|
|
{
|
|
if (!of_live_active())
|
|
return -ENOSYS;
|
|
|
|
assert(ofnode_valid(node));
|
|
|
|
if (value)
|
|
return ofnode_write_string(node, "status", "okay");
|
|
else
|
|
return ofnode_write_string(node, "status", "disabled");
|
|
}
|