[RFC,4/4] devicetree: Added new APIs to make use of more fdt functions
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Message ID 1452521812-5664-5-git-send-email-pmallapp@broadcom.com
State New
Headers show

Commit Message

pmallapp@broadcom.com Jan. 11, 2016, 2:16 p.m. UTC
From: Prem Mallappa <pmallapp@broadcom.com>

SMMUv3 needs device tree entry like below

       interrupt-names = "gerror", "priq", "eventq", "cmdq-sync";

This patch introduces helper function to add entries like above

Signed-off-by: Prem Mallappa <pmallapp@broadcom.com>
---
 device_tree.c                | 35 +++++++++++++++++++++++++++++++++++
 include/sysemu/device_tree.h | 18 ++++++++++++++++++
 2 files changed, 53 insertions(+)

Patch
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diff --git a/device_tree.c b/device_tree.c
index a9f5f8e..7690ff4 100644
--- a/device_tree.c
+++ b/device_tree.c
@@ -146,6 +146,24 @@  int qemu_fdt_setprop(void *fdt, const char *node_path,
     return r;
 }
 
+int qemu_fdt_appendprop(void *fdt, const char *node_path,
+                     const char *property, const void *val, int size)
+{
+    int r;
+
+    r = fdt_appendprop(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)
 {
@@ -168,6 +186,23 @@  int qemu_fdt_setprop_u64(void *fdt, const char *node_path,
     return qemu_fdt_setprop(fdt, node_path, property, &val, sizeof(val));
 }
 
+int qemu_fdt_appendprop_string(void *fdt, const char *node_path,
+                            const char *property, const char *string)
+{
+    int r;
+
+    r = fdt_appendprop_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;
+}
+
+
 int qemu_fdt_setprop_string(void *fdt, const char *node_path,
                             const char *property, const char *string)
 {
diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h
index 359e143..d5d32b4 100644
--- a/include/sysemu/device_tree.h
+++ b/include/sysemu/device_tree.h
@@ -19,12 +19,16 @@  void *load_device_tree(const char *filename_path, int *sizep);
 
 int qemu_fdt_setprop(void *fdt, const char *node_path,
                      const char *property, const void *val, int size);
+int qemu_fdt_appendprop(void *fdt, const char *node_path,
+                     const char *property, const void *val, int size);
 int qemu_fdt_setprop_cell(void *fdt, const char *node_path,
                           const char *property, uint32_t val);
 int qemu_fdt_setprop_u64(void *fdt, const char *node_path,
                          const char *property, uint64_t val);
 int qemu_fdt_setprop_string(void *fdt, const char *node_path,
                             const char *property, const char *string);
+int qemu_fdt_appendprop_string(void *fdt, const char *node_path,
+                               const char *property, const char *string);
 int qemu_fdt_setprop_phandle(void *fdt, const char *node_path,
                              const char *property,
                              const char *target_node_path);
@@ -49,6 +53,20 @@  int qemu_fdt_add_subnode(void *fdt, const char *name);
                          sizeof(qdt_tmp));                                    \
     } while (0)
 
+
+#define qemu_fdt_appendprop_cells(fdt, node_path, property, ...)              \
+    do {                                                                      \
+        uint32_t qdt_tmp[] = { __VA_ARGS__ };                                 \
+        int i;                                                                \
+                                                                              \
+        for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) {                           \
+            qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]);                             \
+        }                                                                     \
+        qemu_fdt_appendprop(fdt, node_path, property, qdt_tmp,                \
+                         sizeof(qdt_tmp));                                    \
+    } while (0)
+
+
 void qemu_fdt_dumpdtb(void *fdt, int size);
 
 /**