u-boot/drivers/core/ofnode.c
Michal Simek 2e9946aba8 net: phy: Fix ethernet-phy-id <dot> in the code
Use dot instead of comma. The fix doesn't affect anything but it is good to
be aligned with used pattern. The first is used only for string size
calculation and the second change is in the comment.

Fixes: db681d4929 ("net: phy: Add new read ethernet phy id function")
Signed-off-by: Michal Simek <michal.simek@amd.com>
2022-11-22 15:02:07 +01:00

1583 lines
34 KiB
C

// 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 <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 oftree oftree_ensure(void *fdt)
{
oftree tree;
int i;
if (gd->flags & GD_FLG_RELOC) {
i = oftree_find(fdt);
if (i == -1) {
if (oftree_count == CONFIG_OFNODE_MULTI_TREE_MAX) {
log_warning("Too many registered device trees (max %d)\n",
CONFIG_OFNODE_MULTI_TREE_MAX);
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("Cannot only access control FDT before relocation\n");
return oftree_null();
}
}
tree.fdt = fdt;
return tree;
}
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);
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;
}
#endif /* OFNODE_MULTI_TREE */
/**
* 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;
}
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)
{
const void *prop;
assert(ofnode_valid(node));
debug("%s: %s: ", __func__, propname);
prop = ofnode_get_property(node, propname, NULL);
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;
}
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);
}
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)
{
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[2]);
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 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(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), false);
}
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);
}
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_copy_props(ofnode src, ofnode dst)
{
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;
}