X-Git-Url: https://git.proxmox.com/?p=mirror_qemu.git;a=blobdiff_plain;f=device_tree.c;h=f8b46b3c7331ae42dcc3be5ee4c5ce3d370d47c6;hp=f5b4699aedb4b5a91970c49f5ed6484c68a8f0be;hb=HEAD;hpb=80972d3bb2dbc6a47bae84b694c14acba9c1de64

diff --git a/device_tree.c b/device_tree.c
deleted file mode 100644
index f5b4699aed..0000000000
--- a/device_tree.c
+++ /dev/null
@@ -1,579 +0,0 @@
-/*
- * Functions to help device tree manipulation using libfdt.
- * It also provides functions to read entries from device tree proc
- * interface.
- *
- * Copyright 2008 IBM Corporation.
- * Authors: Jerone Young <jyoung5@us.ibm.com>
- *          Hollis Blanchard <hollisb@us.ibm.com>
- *
- * This work is licensed under the GNU GPL license version 2 or later.
- *
- */
-
-#include "qemu/osdep.h"
-
-#ifdef CONFIG_LINUX
-#include <dirent.h>
-#endif
-
-#include "qapi/error.h"
-#include "qemu/error-report.h"
-#include "qemu/option.h"
-#include "qemu/bswap.h"
-#include "sysemu/device_tree.h"
-#include "sysemu/sysemu.h"
-#include "hw/loader.h"
-#include "hw/boards.h"
-#include "qemu/config-file.h"
-
-#include <libfdt.h>
-
-#define FDT_MAX_SIZE  0x100000
-
-void *create_device_tree(int *sizep)
-{
-    void *fdt;
-    int ret;
-
-    *sizep = FDT_MAX_SIZE;
-    fdt = g_malloc0(FDT_MAX_SIZE);
-    ret = fdt_create(fdt, FDT_MAX_SIZE);
-    if (ret < 0) {
-        goto fail;
-    }
-    ret = fdt_finish_reservemap(fdt);
-    if (ret < 0) {
-        goto fail;
-    }
-    ret = fdt_begin_node(fdt, "");
-    if (ret < 0) {
-        goto fail;
-    }
-    ret = fdt_end_node(fdt);
-    if (ret < 0) {
-        goto fail;
-    }
-    ret = fdt_finish(fdt);
-    if (ret < 0) {
-        goto fail;
-    }
-    ret = fdt_open_into(fdt, fdt, *sizep);
-    if (ret) {
-        error_report("Unable to copy device tree in memory");
-        exit(1);
-    }
-
-    return fdt;
-fail:
-    error_report("%s Couldn't create dt: %s", __func__, fdt_strerror(ret));
-    exit(1);
-}
-
-void *load_device_tree(const char *filename_path, int *sizep)
-{
-    int dt_size;
-    int dt_file_load_size;
-    int ret;
-    void *fdt = NULL;
-
-    *sizep = 0;
-    dt_size = get_image_size(filename_path);
-    if (dt_size < 0) {
-        error_report("Unable to get size of device tree file '%s'",
-                     filename_path);
-        goto fail;
-    }
-    if (dt_size > INT_MAX / 2 - 10000) {
-        error_report("Device tree file '%s' is too large", filename_path);
-        goto fail;
-    }
-
-    /* Expand to 2x size to give enough room for manipulation.  */
-    dt_size += 10000;
-    dt_size *= 2;
-    /* First allocate space in qemu for device tree */
-    fdt = g_malloc0(dt_size);
-
-    dt_file_load_size = load_image_size(filename_path, fdt, dt_size);
-    if (dt_file_load_size < 0) {
-        error_report("Unable to open device tree file '%s'",
-                     filename_path);
-        goto fail;
-    }
-
-    ret = fdt_open_into(fdt, fdt, dt_size);
-    if (ret) {
-        error_report("Unable to copy device tree in memory");
-        goto fail;
-    }
-
-    /* Check sanity of device tree */
-    if (fdt_check_header(fdt)) {
-        error_report("Device tree file loaded into memory is invalid: %s",
-                     filename_path);
-        goto fail;
-    }
-    *sizep = dt_size;
-    return fdt;
-
-fail:
-    g_free(fdt);
-    return NULL;
-}
-
-#ifdef CONFIG_LINUX
-
-#define SYSFS_DT_BASEDIR "/proc/device-tree"
-
-/**
- * read_fstree: this function is inspired from dtc read_fstree
- * @fdt: preallocated fdt blob buffer, to be populated
- * @dirname: directory to scan under SYSFS_DT_BASEDIR
- * the search is recursive and the tree is searched down to the
- * leaves (property files).
- *
- * the function asserts in case of error
- */
-static void read_fstree(void *fdt, const char *dirname)
-{
-    DIR *d;
-    struct dirent *de;
-    struct stat st;
-    const char *root_dir = SYSFS_DT_BASEDIR;
-    const char *parent_node;
-
-    if (strstr(dirname, root_dir) != dirname) {
-        error_report("%s: %s must be searched within %s",
-                     __func__, dirname, root_dir);
-        exit(1);
-    }
-    parent_node = &dirname[strlen(SYSFS_DT_BASEDIR)];
-
-    d = opendir(dirname);
-    if (!d) {
-        error_report("%s cannot open %s", __func__, dirname);
-        exit(1);
-    }
-
-    while ((de = readdir(d)) != NULL) {
-        char *tmpnam;
-
-        if (!g_strcmp0(de->d_name, ".")
-            || !g_strcmp0(de->d_name, "..")) {
-            continue;
-        }
-
-        tmpnam = g_strdup_printf("%s/%s", dirname, de->d_name);
-
-        if (lstat(tmpnam, &st) < 0) {
-            error_report("%s cannot lstat %s", __func__, tmpnam);
-            exit(1);
-        }
-
-        if (S_ISREG(st.st_mode)) {
-            gchar *val;
-            gsize len;
-
-            if (!g_file_get_contents(tmpnam, &val, &len, NULL)) {
-                error_report("%s not able to extract info from %s",
-                             __func__, tmpnam);
-                exit(1);
-            }
-
-            if (strlen(parent_node) > 0) {
-                qemu_fdt_setprop(fdt, parent_node,
-                                 de->d_name, val, len);
-            } else {
-                qemu_fdt_setprop(fdt, "/", de->d_name, val, len);
-            }
-            g_free(val);
-        } else if (S_ISDIR(st.st_mode)) {
-            char *node_name;
-
-            node_name = g_strdup_printf("%s/%s",
-                                        parent_node, de->d_name);
-            qemu_fdt_add_subnode(fdt, node_name);
-            g_free(node_name);
-            read_fstree(fdt, tmpnam);
-        }
-
-        g_free(tmpnam);
-    }
-
-    closedir(d);
-}
-
-/* load_device_tree_from_sysfs: extract the dt blob from host sysfs */
-void *load_device_tree_from_sysfs(void)
-{
-    void *host_fdt;
-    int host_fdt_size;
-
-    host_fdt = create_device_tree(&host_fdt_size);
-    read_fstree(host_fdt, SYSFS_DT_BASEDIR);
-    if (fdt_check_header(host_fdt)) {
-        error_report("%s host device tree extracted into memory is invalid",
-                     __func__);
-        exit(1);
-    }
-    return host_fdt;
-}
-
-#endif /* CONFIG_LINUX */
-
-static int findnode_nofail(void *fdt, const char *node_path)
-{
-    int offset;
-
-    offset = fdt_path_offset(fdt, node_path);
-    if (offset < 0) {
-        error_report("%s Couldn't find node %s: %s", __func__, node_path,
-                     fdt_strerror(offset));
-        exit(1);
-    }
-
-    return offset;
-}
-
-char **qemu_fdt_node_unit_path(void *fdt, const char *name, Error **errp)
-{
-    char *prefix =  g_strdup_printf("%s@", name);
-    unsigned int path_len = 16, n = 0;
-    GSList *path_list = NULL, *iter;
-    const char *iter_name;
-    int offset, len, ret;
-    char **path_array;
-
-    offset = fdt_next_node(fdt, -1, NULL);
-
-    while (offset >= 0) {
-        iter_name = fdt_get_name(fdt, offset, &len);
-        if (!iter_name) {
-            offset = len;
-            break;
-        }
-        if (!strcmp(iter_name, name) || g_str_has_prefix(iter_name, prefix)) {
-            char *path;
-
-            path = g_malloc(path_len);
-            while ((ret = fdt_get_path(fdt, offset, path, path_len))
-                  == -FDT_ERR_NOSPACE) {
-                path_len += 16;
-                path = g_realloc(path, path_len);
-            }
-            path_list = g_slist_prepend(path_list, path);
-            n++;
-        }
-        offset = fdt_next_node(fdt, offset, NULL);
-    }
-    g_free(prefix);
-
-    if (offset < 0 && offset != -FDT_ERR_NOTFOUND) {
-        error_setg(errp, "%s: abort parsing dt for %s node units: %s",
-                   __func__, name, fdt_strerror(offset));
-        for (iter = path_list; iter; iter = iter->next) {
-            g_free(iter->data);
-        }
-        g_slist_free(path_list);
-        return NULL;
-    }
-
-    path_array = g_new(char *, n + 1);
-    path_array[n--] = NULL;
-
-    for (iter = path_list; iter; iter = iter->next) {
-        path_array[n--] = iter->data;
-    }
-
-    g_slist_free(path_list);
-
-    return path_array;
-}
-
-char **qemu_fdt_node_path(void *fdt, const char *name, char *compat,
-                          Error **errp)
-{
-    int offset, len, ret;
-    const char *iter_name;
-    unsigned int path_len = 16, n = 0;
-    GSList *path_list = NULL, *iter;
-    char **path_array;
-
-    offset = fdt_node_offset_by_compatible(fdt, -1, compat);
-
-    while (offset >= 0) {
-        iter_name = fdt_get_name(fdt, offset, &len);
-        if (!iter_name) {
-            offset = len;
-            break;
-        }
-        if (!name || !strcmp(iter_name, name)) {
-            char *path;
-
-            path = g_malloc(path_len);
-            while ((ret = fdt_get_path(fdt, offset, path, path_len))
-                  == -FDT_ERR_NOSPACE) {
-                path_len += 16;
-                path = g_realloc(path, path_len);
-            }
-            path_list = g_slist_prepend(path_list, path);
-            n++;
-        }
-        offset = fdt_node_offset_by_compatible(fdt, offset, compat);
-    }
-
-    if (offset < 0 && offset != -FDT_ERR_NOTFOUND) {
-        error_setg(errp, "%s: abort parsing dt for %s/%s: %s",
-                   __func__, name, compat, fdt_strerror(offset));
-        for (iter = path_list; iter; iter = iter->next) {
-            g_free(iter->data);
-        }
-        g_slist_free(path_list);
-        return NULL;
-    }
-
-    path_array = g_new(char *, n + 1);
-    path_array[n--] = NULL;
-
-    for (iter = path_list; iter; iter = iter->next) {
-        path_array[n--] = iter->data;
-    }
-
-    g_slist_free(path_list);
-
-    return path_array;
-}
-
-int qemu_fdt_setprop(void *fdt, const char *node_path,
-                     const char *property, const void *val, int size)
-{
-    int r;
-
-    r = fdt_setprop(fdt, findnode_nofail(fdt, node_path), property, val, size);
-    if (r < 0) {
-        error_report("%s: Couldn't set %s/%s: %s", __func__, node_path,
-                     property, fdt_strerror(r));
-        exit(1);
-    }
-
-    return r;
-}
-
-int qemu_fdt_setprop_cell(void *fdt, const char *node_path,
-                          const char *property, uint32_t val)
-{
-    int r;
-
-    r = fdt_setprop_cell(fdt, findnode_nofail(fdt, node_path), property, val);
-    if (r < 0) {
-        error_report("%s: Couldn't set %s/%s = %#08x: %s", __func__,
-                     node_path, property, val, fdt_strerror(r));
-        exit(1);
-    }
-
-    return r;
-}
-
-int qemu_fdt_setprop_u64(void *fdt, const char *node_path,
-                         const char *property, uint64_t val)
-{
-    val = cpu_to_be64(val);
-    return qemu_fdt_setprop(fdt, node_path, property, &val, sizeof(val));
-}
-
-int qemu_fdt_setprop_string(void *fdt, const char *node_path,
-                            const char *property, const char *string)
-{
-    int r;
-
-    r = fdt_setprop_string(fdt, findnode_nofail(fdt, node_path), property, string);
-    if (r < 0) {
-        error_report("%s: Couldn't set %s/%s = %s: %s", __func__,
-                     node_path, property, string, fdt_strerror(r));
-        exit(1);
-    }
-
-    return r;
-}
-
-const void *qemu_fdt_getprop(void *fdt, const char *node_path,
-                             const char *property, int *lenp, Error **errp)
-{
-    int len;
-    const void *r;
-
-    if (!lenp) {
-        lenp = &len;
-    }
-    r = fdt_getprop(fdt, findnode_nofail(fdt, node_path), property, lenp);
-    if (!r) {
-        error_setg(errp, "%s: Couldn't get %s/%s: %s", __func__,
-                  node_path, property, fdt_strerror(*lenp));
-    }
-    return r;
-}
-
-uint32_t qemu_fdt_getprop_cell(void *fdt, const char *node_path,
-                               const char *property, int *lenp, Error **errp)
-{
-    int len;
-    const uint32_t *p;
-
-    if (!lenp) {
-        lenp = &len;
-    }
-    p = qemu_fdt_getprop(fdt, node_path, property, lenp, errp);
-    if (!p) {
-        return 0;
-    } else if (*lenp != 4) {
-        error_setg(errp, "%s: %s/%s not 4 bytes long (not a cell?)",
-                   __func__, node_path, property);
-        *lenp = -EINVAL;
-        return 0;
-    }
-    return be32_to_cpu(*p);
-}
-
-uint32_t qemu_fdt_get_phandle(void *fdt, const char *path)
-{
-    uint32_t r;
-
-    r = fdt_get_phandle(fdt, findnode_nofail(fdt, path));
-    if (r == 0) {
-        error_report("%s: Couldn't get phandle for %s: %s", __func__,
-                     path, fdt_strerror(r));
-        exit(1);
-    }
-
-    return r;
-}
-
-int qemu_fdt_setprop_phandle(void *fdt, const char *node_path,
-                             const char *property,
-                             const char *target_node_path)
-{
-    uint32_t phandle = qemu_fdt_get_phandle(fdt, target_node_path);
-    return qemu_fdt_setprop_cell(fdt, node_path, property, phandle);
-}
-
-uint32_t qemu_fdt_alloc_phandle(void *fdt)
-{
-    static int phandle = 0x0;
-
-    /*
-     * We need to find out if the user gave us special instruction at
-     * which phandle id to start allocating phandles.
-     */
-    if (!phandle) {
-        phandle = machine_phandle_start(current_machine);
-    }
-
-    if (!phandle) {
-        /*
-         * None or invalid phandle given on the command line, so fall back to
-         * default starting point.
-         */
-        phandle = 0x8000;
-    }
-
-    return phandle++;
-}
-
-int qemu_fdt_nop_node(void *fdt, const char *node_path)
-{
-    int r;
-
-    r = fdt_nop_node(fdt, findnode_nofail(fdt, node_path));
-    if (r < 0) {
-        error_report("%s: Couldn't nop node %s: %s", __func__, node_path,
-                     fdt_strerror(r));
-        exit(1);
-    }
-
-    return r;
-}
-
-int qemu_fdt_add_subnode(void *fdt, const char *name)
-{
-    char *dupname = g_strdup(name);
-    char *basename = strrchr(dupname, '/');
-    int retval;
-    int parent = 0;
-
-    if (!basename) {
-        g_free(dupname);
-        return -1;
-    }
-
-    basename[0] = '\0';
-    basename++;
-
-    if (dupname[0]) {
-        parent = findnode_nofail(fdt, dupname);
-    }
-
-    retval = fdt_add_subnode(fdt, parent, basename);
-    if (retval < 0) {
-        error_report("FDT: Failed to create subnode %s: %s", name,
-                     fdt_strerror(retval));
-        exit(1);
-    }
-
-    g_free(dupname);
-    return retval;
-}
-
-void qemu_fdt_dumpdtb(void *fdt, int size)
-{
-    const char *dumpdtb = qemu_opt_get(qemu_get_machine_opts(), "dumpdtb");
-
-    if (dumpdtb) {
-        /* Dump the dtb to a file and quit */
-        if (g_file_set_contents(dumpdtb, fdt, size, NULL)) {
-            info_report("dtb dumped to %s. Exiting.", dumpdtb);
-            exit(0);
-        }
-        error_report("%s: Failed dumping dtb to %s", __func__, dumpdtb);
-        exit(1);
-    }
-}
-
-int qemu_fdt_setprop_sized_cells_from_array(void *fdt,
-                                            const char *node_path,
-                                            const char *property,
-                                            int numvalues,
-                                            uint64_t *values)
-{
-    uint32_t *propcells;
-    uint64_t value;
-    int cellnum, vnum, ncells;
-    uint32_t hival;
-    int ret;
-
-    propcells = g_new0(uint32_t, numvalues * 2);
-
-    cellnum = 0;
-    for (vnum = 0; vnum < numvalues; vnum++) {
-        ncells = values[vnum * 2];
-        if (ncells != 1 && ncells != 2) {
-            ret = -1;
-            goto out;
-        }
-        value = values[vnum * 2 + 1];
-        hival = cpu_to_be32(value >> 32);
-        if (ncells > 1) {
-            propcells[cellnum++] = hival;
-        } else if (hival != 0) {
-            ret = -1;
-            goto out;
-        }
-        propcells[cellnum++] = cpu_to_be32(value);
-    }
-
-    ret = qemu_fdt_setprop(fdt, node_path, property, propcells,
-                           cellnum * sizeof(uint32_t));
-out:
-    g_free(propcells);
-    return ret;
-}