#include "config.h"
#include "qemu-common.h"
-#include "device_tree.h"
+#include "qemu/error-report.h"
+#include "sysemu/device_tree.h"
+#include "sysemu/sysemu.h"
#include "hw/loader.h"
+#include "qemu/option.h"
+#include "qemu/config-file.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_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) {
+ 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;
*sizep = 0;
dt_size = get_image_size(filename_path);
if (dt_size < 0) {
- printf("Unable to get size of device tree file '%s'\n",
- filename_path);
+ error_report("Unable to get size of device tree file '%s'",
+ filename_path);
goto fail;
}
dt_file_load_size = load_image(filename_path, fdt);
if (dt_file_load_size < 0) {
- printf("Unable to open device tree file '%s'\n",
- filename_path);
+ error_report("Unable to open device tree file '%s'",
+ filename_path);
goto fail;
}
ret = fdt_open_into(fdt, fdt, dt_size);
if (ret) {
- printf("Unable to copy device tree in memory\n");
+ error_report("Unable to copy device tree in memory");
goto fail;
}
/* Check sanity of device tree */
if (fdt_check_header(fdt)) {
- printf ("Device tree file loaded into memory is invalid: %s\n",
- filename_path);
+ error_report("Device tree file loaded into memory is invalid: %s",
+ filename_path);
goto fail;
}
*sizep = dt_size;
return offset;
}
-int qemu_devtree_setprop(void *fdt, const char *node_path,
- const char *property, void *val_array, int size)
+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_array, size);
+ r = fdt_setprop(fdt, findnode_nofail(fdt, node_path), property, val, size);
if (r < 0) {
fprintf(stderr, "%s: Couldn't set %s/%s: %s\n", __func__, node_path,
property, fdt_strerror(r));
return r;
}
-int qemu_devtree_setprop_cell(void *fdt, const char *node_path,
- const char *property, uint32_t val)
+int qemu_fdt_setprop_cell(void *fdt, const char *node_path,
+ const char *property, uint32_t val)
{
int r;
return r;
}
-int qemu_devtree_setprop_string(void *fdt, const char *node_path,
- const char *property, const char *string)
+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;
return r;
}
-int qemu_devtree_nop_node(void *fdt, const char *node_path)
+const void *qemu_fdt_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_fdt_getprop_cell(void *fdt, const char *node_path,
+ const char *property)
+{
+ int len;
+ const uint32_t *p = qemu_fdt_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_fdt_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_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 allocting phandles.
+ */
+ if (!phandle) {
+ phandle = qemu_opt_get_number(qemu_get_machine_opts(),
+ "phandle_start", 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_fdt_nop_node(void *fdt, const char *node_path)
{
int r;
return r;
}
-int qemu_devtree_add_subnode(void *fdt, const char *name)
+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++;
- retval = fdt_add_subnode(fdt, findnode_nofail(fdt, dupname), 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));
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 */
+ exit(g_file_set_contents(dumpdtb, fdt, size, NULL) ? 0 : 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;
+
+ propcells = g_new0(uint32_t, numvalues * 2);
+
+ cellnum = 0;
+ for (vnum = 0; vnum < numvalues; vnum++) {
+ ncells = values[vnum * 2];
+ if (ncells != 1 && ncells != 2) {
+ return -1;
+ }
+ value = values[vnum * 2 + 1];
+ hival = cpu_to_be32(value >> 32);
+ if (ncells > 1) {
+ propcells[cellnum++] = hival;
+ } else if (hival != 0) {
+ return -1;
+ }
+ propcells[cellnum++] = cpu_to_be32(value);
+ }
+
+ return qemu_fdt_setprop(fdt, node_path, property, propcells,
+ cellnum * sizeof(uint32_t));
+}
projects / mirror_qemu.git / blobdiff