#include "config.h"
#include "qemu-common.h"
-#include "sysemu.h"
#include "device_tree.h"
#include "hw/loader.h"
+#include "qemu-option.h"
+#include "qemu-config.h"
#include <libfdt.h>
+#define FDT_MAX_SIZE 0x10000
+
+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_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) {
+ fprintf(stderr, "Unable to copy device tree in memory\n");
+ exit(1);
+ }
+
+ return fdt;
+fail:
+ fprintf(stderr, "%s Couldn't create dt: %s\n", __func__, fdt_strerror(ret));
+ exit(1);
+}
+
void *load_device_tree(const char *filename_path, int *sizep)
{
int dt_size;
}
/* 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 = qemu_mallocz(dt_size);
+ fdt = g_malloc0(dt_size);
dt_file_load_size = load_image(filename_path, fdt);
if (dt_file_load_size < 0) {
return fdt;
fail:
- qemu_free(fdt);
+ g_free(fdt);
return NULL;
}
-int qemu_devtree_setprop(void *fdt, const char *node_path,
- const char *property, uint32_t *val_array, int size)
+static int findnode_nofail(void *fdt, const char *node_path)
{
int offset;
offset = fdt_path_offset(fdt, node_path);
- if (offset < 0)
- return offset;
+ if (offset < 0) {
+ fprintf(stderr, "%s Couldn't find node %s: %s\n", __func__, node_path,
+ fdt_strerror(offset));
+ exit(1);
+ }
+
+ return offset;
+}
+
+int qemu_devtree_setprop(void *fdt, const char *node_path,
+ const char *property, const void *val_array, int size)
+{
+ int r;
+
+ r = fdt_setprop(fdt, findnode_nofail(fdt, node_path), property, val_array, size);
+ if (r < 0) {
+ fprintf(stderr, "%s: Couldn't set %s/%s: %s\n", __func__, node_path,
+ property, fdt_strerror(r));
+ exit(1);
+ }
- return fdt_setprop(fdt, offset, property, val_array, size);
+ return r;
}
int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
const char *property, uint32_t val)
{
- int offset;
+ int r;
- offset = fdt_path_offset(fdt, node_path);
- if (offset < 0)
- return offset;
+ r = fdt_setprop_cell(fdt, findnode_nofail(fdt, node_path), property, val);
+ if (r < 0) {
+ fprintf(stderr, "%s: Couldn't set %s/%s = %#08x: %s\n", __func__,
+ node_path, property, val, fdt_strerror(r));
+ exit(1);
+ }
- return fdt_setprop_cell(fdt, offset, property, val);
+ return r;
+}
+
+int qemu_devtree_setprop_u64(void *fdt, const char *node_path,
+ const char *property, uint64_t val)
+{
+ val = cpu_to_be64(val);
+ return qemu_devtree_setprop(fdt, node_path, property, &val, sizeof(val));
}
int qemu_devtree_setprop_string(void *fdt, const char *node_path,
const char *property, const char *string)
{
- int offset;
+ int r;
- offset = fdt_path_offset(fdt, node_path);
- if (offset < 0)
- return offset;
+ r = fdt_setprop_string(fdt, findnode_nofail(fdt, node_path), property, string);
+ if (r < 0) {
+ fprintf(stderr, "%s: Couldn't set %s/%s = %s: %s\n", __func__,
+ node_path, property, string, fdt_strerror(r));
+ exit(1);
+ }
+
+ return r;
+}
+
+const void *qemu_devtree_getprop(void *fdt, const char *node_path,
+ const char *property, int *lenp)
+{
+ int len;
+ const void *r;
+ if (!lenp) {
+ lenp = &len;
+ }
+ r = fdt_getprop(fdt, findnode_nofail(fdt, node_path), property, lenp);
+ if (!r) {
+ fprintf(stderr, "%s: Couldn't get %s/%s: %s\n", __func__,
+ node_path, property, fdt_strerror(*lenp));
+ exit(1);
+ }
+ return r;
+}
+
+uint32_t qemu_devtree_getprop_cell(void *fdt, const char *node_path,
+ const char *property)
+{
+ int len;
+ const uint32_t *p = qemu_devtree_getprop(fdt, node_path, property, &len);
+ if (len != 4) {
+ fprintf(stderr, "%s: %s/%s not 4 bytes long (not a cell?)\n",
+ __func__, node_path, property);
+ exit(1);
+ }
+ return be32_to_cpu(*p);
+}
+
+uint32_t qemu_devtree_get_phandle(void *fdt, const char *path)
+{
+ uint32_t r;
+
+ r = fdt_get_phandle(fdt, findnode_nofail(fdt, path));
+ if (r <= 0) {
+ fprintf(stderr, "%s: Couldn't get phandle for %s: %s\n", __func__,
+ path, fdt_strerror(r));
+ exit(1);
+ }
+
+ return r;
+}
+
+int qemu_devtree_setprop_phandle(void *fdt, const char *node_path,
+ const char *property,
+ const char *target_node_path)
+{
+ uint32_t phandle = qemu_devtree_get_phandle(fdt, target_node_path);
+ return qemu_devtree_setprop_cell(fdt, node_path, property, phandle);
+}
+
+uint32_t qemu_devtree_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 allocting phandles.
+ */
+ if (!phandle) {
+ QemuOpts *machine_opts;
+ machine_opts = qemu_opts_find(qemu_find_opts("machine"), 0);
+ if (machine_opts) {
+ const char *phandle_start;
+ phandle_start = qemu_opt_get(machine_opts, "phandle_start");
+ if (phandle_start) {
+ phandle = strtoul(phandle_start, NULL, 0);
+ }
+ }
+ }
+
+ if (!phandle) {
+ /*
+ * None or invalid phandle given on the command line, so fall back to
+ * default starting point.
+ */
+ phandle = 0x8000;
+ }
+
+ return phandle++;
+}
+
+int qemu_devtree_nop_node(void *fdt, const char *node_path)
+{
+ int r;
+
+ r = fdt_nop_node(fdt, findnode_nofail(fdt, node_path));
+ if (r < 0) {
+ fprintf(stderr, "%s: Couldn't nop node %s: %s\n", __func__, node_path,
+ fdt_strerror(r));
+ exit(1);
+ }
+
+ return r;
+}
+
+int qemu_devtree_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) {
+ fprintf(stderr, "FDT: Failed to create subnode %s: %s\n", name,
+ fdt_strerror(retval));
+ exit(1);
+ }
- return fdt_setprop_string(fdt, offset, property, string);
+ g_free(dupname);
+ return retval;
}
projects / sdk / emulator / qemu.git / blobdiff