mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-03-09 15:40:20 +00:00
Add a directory by kernel instead of a common root, add qnap-301w and rpi4 kernel 6.1 suppport
This commit is contained in:
Ycarus (Yannick Chabanois)
parent
e910436a7a
commit
46837ec4c0
9459 changed files with 362648 additions and 116345 deletions
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@ -1,503 +0,0 @@
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/*
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* Copyright (c) 2011 The Chromium OS Authors.
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <common.h>
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#include <serial.h>
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#include <libfdt.h>
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#include <fdtdec.h>
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/* we need the generic GPIO interface here */
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#include <asm-generic/gpio.h>
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DECLARE_GLOBAL_DATA_PTR;
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/*
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* Here are the type we know about. One day we might allow drivers to
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* register. For now we just put them here. The COMPAT macro allows us to
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* turn this into a sparse list later, and keeps the ID with the name.
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*/
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#define COMPAT(id, name) name
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static const char * const compat_names[COMPAT_COUNT] = {
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COMPAT(UNKNOWN, "<none>"),
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COMPAT(NVIDIA_TEGRA20_USB, "nvidia,tegra20-ehci"),
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COMPAT(NVIDIA_TEGRA20_I2C, "nvidia,tegra20-i2c"),
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COMPAT(NVIDIA_TEGRA20_DVC, "nvidia,tegra20-i2c-dvc"),
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COMPAT(NVIDIA_TEGRA20_EMC, "nvidia,tegra20-emc"),
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COMPAT(NVIDIA_TEGRA20_EMC_TABLE, "nvidia,tegra20-emc-table"),
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COMPAT(NVIDIA_TEGRA20_KBC, "nvidia,tegra20-kbc"),
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};
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const char *fdtdec_get_compatible(enum fdt_compat_id id)
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{
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/* We allow reading of the 'unknown' ID for testing purposes */
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assert(id >= 0 && id < COMPAT_COUNT);
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return compat_names[id];
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}
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/**
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* Look in the FDT for an alias with the given name and return its node.
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*
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* @param blob FDT blob
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* @param name alias name to look up
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* @return node offset if found, or an error code < 0 otherwise
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*/
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static int find_alias_node(const void *blob, const char *name)
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{
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const char *path;
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int alias_node;
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debug("find_alias_node: %s\n", name);
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alias_node = fdt_path_offset(blob, "/aliases");
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if (alias_node < 0)
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return alias_node;
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path = fdt_getprop(blob, alias_node, name, NULL);
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if (!path)
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return -FDT_ERR_NOTFOUND;
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return fdt_path_offset(blob, path);
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}
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fdt_addr_t fdtdec_get_addr(const void *blob, int node,
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const char *prop_name)
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{
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const fdt_addr_t *cell;
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int len;
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debug("get_addr: %s\n", prop_name);
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cell = fdt_getprop(blob, node, prop_name, &len);
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if (cell && (len == sizeof(fdt_addr_t) ||
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len == sizeof(fdt_addr_t) * 2))
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return fdt_addr_to_cpu(*cell);
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return FDT_ADDR_T_NONE;
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}
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s32 fdtdec_get_int(const void *blob, int node, const char *prop_name,
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s32 default_val)
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{
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const s32 *cell;
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int len;
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debug("get_size: %s\n", prop_name);
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cell = fdt_getprop(blob, node, prop_name, &len);
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if (cell && len >= sizeof(s32))
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return fdt32_to_cpu(cell[0]);
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return default_val;
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}
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int fdtdec_get_is_enabled(const void *blob, int node)
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{
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const char *cell;
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/*
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* It should say "okay", so only allow that. Some fdts use "ok" but
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* this is a bug. Please fix your device tree source file. See here
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* for discussion:
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*
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* http://www.mail-archive.com/u-boot@lists.denx.de/msg71598.html
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*/
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cell = fdt_getprop(blob, node, "status", NULL);
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if (cell)
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return 0 == strcmp(cell, "okay");
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return 1;
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}
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enum fdt_compat_id fd_dec_lookup(const void *blob, int node)
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{
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enum fdt_compat_id id;
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/* Search our drivers */
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for (id = COMPAT_UNKNOWN; id < COMPAT_COUNT; id++)
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if (0 == fdt_node_check_compatible(blob, node,
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compat_names[id]))
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return id;
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return COMPAT_UNKNOWN;
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}
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int fdtdec_next_compatible(const void *blob, int node,
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enum fdt_compat_id id)
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{
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return fdt_node_offset_by_compatible(blob, node, compat_names[id]);
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}
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int fdtdec_next_compatible_subnode(const void *blob, int node,
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enum fdt_compat_id id, int *depthp)
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{
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do {
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node = fdt_next_node(blob, node, depthp);
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} while (*depthp > 1);
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/* If this is a direct subnode, and compatible, return it */
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if (*depthp == 1 && 0 == fdt_node_check_compatible(
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blob, node, compat_names[id]))
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return node;
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return -FDT_ERR_NOTFOUND;
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}
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int fdtdec_next_alias(const void *blob, const char *name,
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enum fdt_compat_id id, int *upto)
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{
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#define MAX_STR_LEN 20
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char str[MAX_STR_LEN + 20];
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int node, err;
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/* snprintf() is not available */
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assert(strlen(name) < MAX_STR_LEN);
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sprintf(str, "%.*s%d", MAX_STR_LEN, name, *upto);
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node = find_alias_node(blob, str);
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if (node < 0)
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return node;
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err = fdt_node_check_compatible(blob, node, compat_names[id]);
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if (err < 0)
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return err;
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if (err)
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return -FDT_ERR_NOTFOUND;
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(*upto)++;
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return node;
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}
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int fdtdec_find_aliases_for_id(const void *blob, const char *name,
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enum fdt_compat_id id, int *node_list, int maxcount)
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{
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memset(node_list, '\0', sizeof(*node_list) * maxcount);
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return fdtdec_add_aliases_for_id(blob, name, id, node_list, maxcount);
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}
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/* TODO: Can we tighten this code up a little? */
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int fdtdec_add_aliases_for_id(const void *blob, const char *name,
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enum fdt_compat_id id, int *node_list, int maxcount)
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{
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int name_len = strlen(name);
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int nodes[maxcount];
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int num_found = 0;
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int offset, node;
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int alias_node;
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int count;
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int i, j;
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/* find the alias node if present */
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alias_node = fdt_path_offset(blob, "/aliases");
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/*
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* start with nothing, and we can assume that the root node can't
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* match
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*/
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memset(nodes, '\0', sizeof(nodes));
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/* First find all the compatible nodes */
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for (node = count = 0; node >= 0 && count < maxcount;) {
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node = fdtdec_next_compatible(blob, node, id);
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if (node >= 0)
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nodes[count++] = node;
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}
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if (node >= 0)
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debug("%s: warning: maxcount exceeded with alias '%s'\n",
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__func__, name);
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/* Now find all the aliases */
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for (offset = fdt_first_property_offset(blob, alias_node);
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offset > 0;
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offset = fdt_next_property_offset(blob, offset)) {
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const struct fdt_property *prop;
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const char *path;
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int number;
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int found;
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node = 0;
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prop = fdt_get_property_by_offset(blob, offset, NULL);
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path = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
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if (prop->len && 0 == strncmp(path, name, name_len))
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node = fdt_path_offset(blob, prop->data);
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if (node <= 0)
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continue;
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/* Get the alias number */
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number = simple_strtoul(path + name_len, NULL, 10);
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if (number < 0 || number >= maxcount) {
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debug("%s: warning: alias '%s' is out of range\n",
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__func__, path);
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continue;
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}
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/* Make sure the node we found is actually in our list! */
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found = -1;
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for (j = 0; j < count; j++)
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if (nodes[j] == node) {
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found = j;
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break;
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}
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if (found == -1) {
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debug("%s: warning: alias '%s' points to a node "
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"'%s' that is missing or is not compatible "
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" with '%s'\n", __func__, path,
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fdt_get_name(blob, node, NULL),
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compat_names[id]);
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continue;
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}
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/*
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* Add this node to our list in the right place, and mark
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* it as done.
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*/
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if (fdtdec_get_is_enabled(blob, node)) {
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if (node_list[number]) {
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debug("%s: warning: alias '%s' requires that "
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"a node be placed in the list in a "
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"position which is already filled by "
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"node '%s'\n", __func__, path,
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fdt_get_name(blob, node, NULL));
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continue;
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}
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node_list[number] = node;
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if (number >= num_found)
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num_found = number + 1;
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}
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nodes[found] = 0;
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}
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/* Add any nodes not mentioned by an alias */
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for (i = j = 0; i < maxcount; i++) {
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if (!node_list[i]) {
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for (; j < maxcount; j++)
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if (nodes[j] &&
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fdtdec_get_is_enabled(blob, nodes[j]))
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break;
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/* Have we run out of nodes to add? */
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if (j == maxcount)
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break;
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assert(!node_list[i]);
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node_list[i] = nodes[j++];
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if (i >= num_found)
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num_found = i + 1;
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}
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}
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return num_found;
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}
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int fdtdec_check_fdt(void)
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{
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/*
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* We must have an FDT, but we cannot panic() yet since the console
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* is not ready. So for now, just assert(). Boards which need an early
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* FDT (prior to console ready) will need to make their own
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* arrangements and do their own checks.
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*/
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assert(!fdtdec_prepare_fdt());
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return 0;
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}
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/*
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* This function is a little odd in that it accesses global data. At some
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* point if the architecture board.c files merge this will make more sense.
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* Even now, it is common code.
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*/
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int fdtdec_prepare_fdt(void)
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{
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if (((uintptr_t)gd->fdt_blob & 3) || fdt_check_header(gd->fdt_blob)) {
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printf("No valid FDT found - please append one to U-Boot "
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"binary, use u-boot-dtb.bin or define "
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"CONFIG_OF_EMBED\n");
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return -1;
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}
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return 0;
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}
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int fdtdec_lookup_phandle(const void *blob, int node, const char *prop_name)
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{
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const u32 *phandle;
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int lookup;
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phandle = fdt_getprop(blob, node, prop_name, NULL);
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if (!phandle)
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return -FDT_ERR_NOTFOUND;
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lookup = fdt_node_offset_by_phandle(blob, fdt32_to_cpu(*phandle));
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return lookup;
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}
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/**
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* Look up a property in a node and check that it has a minimum length.
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*
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* @param blob FDT blob
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* @param node node to examine
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* @param prop_name name of property to find
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* @param min_len minimum property length in bytes
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* @param err 0 if ok, or -FDT_ERR_NOTFOUND if the property is not
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found, or -FDT_ERR_BADLAYOUT if not enough data
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* @return pointer to cell, which is only valid if err == 0
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*/
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static const void *get_prop_check_min_len(const void *blob, int node,
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const char *prop_name, int min_len, int *err)
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{
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const void *cell;
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int len;
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debug("%s: %s\n", __func__, prop_name);
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cell = fdt_getprop(blob, node, prop_name, &len);
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if (!cell)
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*err = -FDT_ERR_NOTFOUND;
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else if (len < min_len)
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*err = -FDT_ERR_BADLAYOUT;
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else
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*err = 0;
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return cell;
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}
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int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
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u32 *array, int count)
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{
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const u32 *cell;
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int i, err = 0;
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debug("%s: %s\n", __func__, prop_name);
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cell = get_prop_check_min_len(blob, node, prop_name,
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sizeof(u32) * count, &err);
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if (!err) {
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for (i = 0; i < count; i++)
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array[i] = fdt32_to_cpu(cell[i]);
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}
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return err;
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}
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const u32 *fdtdec_locate_array(const void *blob, int node,
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const char *prop_name, int count)
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{
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const u32 *cell;
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int err;
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cell = get_prop_check_min_len(blob, node, prop_name,
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sizeof(u32) * count, &err);
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return err ? NULL : cell;
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}
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int fdtdec_get_bool(const void *blob, int node, const char *prop_name)
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{
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const s32 *cell;
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int len;
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debug("%s: %s\n", __func__, prop_name);
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cell = fdt_getprop(blob, node, prop_name, &len);
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return cell != NULL;
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}
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/**
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* Decode a list of GPIOs from an FDT. This creates a list of GPIOs with no
|
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* terminating item.
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*
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* @param blob FDT blob to use
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* @param node Node to look at
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* @param prop_name Node property name
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* @param gpio Array of gpio elements to fill from FDT. This will be
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* untouched if either 0 or an error is returned
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* @param max_count Maximum number of elements allowed
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* @return number of GPIOs read if ok, -FDT_ERR_BADLAYOUT if max_count would
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* be exceeded, or -FDT_ERR_NOTFOUND if the property is missing.
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*/
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static int fdtdec_decode_gpios(const void *blob, int node,
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const char *prop_name, struct fdt_gpio_state *gpio,
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int max_count)
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{
|
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const struct fdt_property *prop;
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const u32 *cell;
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const char *name;
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int len, i;
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debug("%s: %s\n", __func__, prop_name);
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assert(max_count > 0);
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prop = fdt_get_property(blob, node, prop_name, &len);
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if (!prop) {
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debug("FDT: %s: property '%s' missing\n", __func__, prop_name);
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return -FDT_ERR_NOTFOUND;
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}
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/* We will use the name to tag the GPIO */
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name = fdt_string(blob, fdt32_to_cpu(prop->nameoff));
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cell = (u32 *)prop->data;
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len /= sizeof(u32) * 3; /* 3 cells per GPIO record */
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if (len > max_count) {
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debug("FDT: %s: too many GPIOs / cells for "
|
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"property '%s'\n", __func__, prop_name);
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return -FDT_ERR_BADLAYOUT;
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||||
}
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|
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/* Read out the GPIO data from the cells */
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for (i = 0; i < len; i++, cell += 3) {
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gpio[i].gpio = fdt32_to_cpu(cell[1]);
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gpio[i].flags = fdt32_to_cpu(cell[2]);
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||||
gpio[i].name = name;
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}
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return len;
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}
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int fdtdec_decode_gpio(const void *blob, int node, const char *prop_name,
|
||||
struct fdt_gpio_state *gpio)
|
||||
{
|
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int err;
|
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|
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debug("%s: %s\n", __func__, prop_name);
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gpio->gpio = FDT_GPIO_NONE;
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gpio->name = NULL;
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err = fdtdec_decode_gpios(blob, node, prop_name, gpio, 1);
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return err == 1 ? 0 : err;
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}
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||||
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int fdtdec_setup_gpio(struct fdt_gpio_state *gpio)
|
||||
{
|
||||
/*
|
||||
* Return success if there is no GPIO defined. This is used for
|
||||
* optional GPIOs)
|
||||
*/
|
||||
if (!fdt_gpio_isvalid(gpio))
|
||||
return 0;
|
||||
|
||||
if (gpio_request(gpio->gpio, gpio->name))
|
||||
return -1;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int fdtdec_get_byte_array(const void *blob, int node, const char *prop_name,
|
||||
u8 *array, int count)
|
||||
{
|
||||
const u8 *cell;
|
||||
int err;
|
||||
|
||||
cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
|
||||
if (!err)
|
||||
memcpy(array, cell, count);
|
||||
return err;
|
||||
}
|
||||
|
||||
const u8 *fdtdec_locate_byte_array(const void *blob, int node,
|
||||
const char *prop_name, int count)
|
||||
{
|
||||
const u8 *cell;
|
||||
int err;
|
||||
|
||||
cell = get_prop_check_min_len(blob, node, prop_name, count, &err);
|
||||
if (err)
|
||||
return NULL;
|
||||
return cell;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue