fdtdec: Implement fdtdec_set_phandle()

[platform/kernel/u-boot.git] / include / fdtdec.h

diff --git a/include/fdtdec.h b/include/fdtdec.h
index 2a8ad96..ba7f873 100644 (file)
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -23,15 +23,44 @@
  */
 typedef phys_addr_t fdt_addr_t;
 typedef phys_size_t fdt_size_t;
+
+static inline fdt32_t fdt_addr_unpack(fdt_addr_t addr, fdt32_t *upper)
+{
+       if (upper)
+#ifdef CONFIG_PHYS_64BIT
+               *upper = addr >> 32;
+#else
+               *upper = 0;
+#endif
+
+       return addr;
+}
+
+static inline fdt32_t fdt_size_unpack(fdt_size_t size, fdt32_t *upper)
+{
+       if (upper)
+#ifdef CONFIG_PHYS_64BIT
+               *upper = size >> 32;
+#else
+               *upper = 0;
+#endif
+
+       return size;
+}
+
 #ifdef CONFIG_PHYS_64BIT
 #define FDT_ADDR_T_NONE (-1U)
 #define fdt_addr_to_cpu(reg) be64_to_cpu(reg)
 #define fdt_size_to_cpu(reg) be64_to_cpu(reg)
+#define cpu_to_fdt_addr(reg) cpu_to_be64(reg)
+#define cpu_to_fdt_size(reg) cpu_to_be64(reg)
 typedef fdt64_t fdt_val_t;
 #else
 #define FDT_ADDR_T_NONE (-1U)
 #define fdt_addr_to_cpu(reg) be32_to_cpu(reg)
 #define fdt_size_to_cpu(reg) be32_to_cpu(reg)
+#define cpu_to_fdt_addr(reg) cpu_to_be32(reg)
+#define cpu_to_fdt_size(reg) cpu_to_be32(reg)
 typedef fdt32_t fdt_val_t;
 #endif
 
@@ -619,6 +648,19 @@ int fdtdec_get_alias_seq(const void *blob, const char *base, int node,
                         int *seqp);
 
 /**
+ * Get the highest alias number for susbystem.
+ *
+ * It parses all aliases and find out highest recorded alias for subsystem.
+ * Aliases are of the form <base><num> where <num> is the sequence number.
+ *
+ * @param blob         Device tree blob (if NULL, then error is returned)
+ * @param base         Base name for alias susbystem (before the number)
+ *
+ * @return 0 highest alias ID, -1 if not found
+ */
+int fdtdec_get_alias_highest_id(const void *blob, const char *base);
+
+/**
  * Get a property from the /chosen node
  *
  * @param blob         Device tree blob (if NULL, then NULL is returned)
@@ -905,6 +947,26 @@ int fdtdec_decode_display_timing(const void *blob, int node, int index,
                                 struct display_timing *config);
 
 /**
+ * fdtdec_setup_mem_size_base_fdt() - decode and setup gd->ram_size and
+ * gd->ram_start
+ *
+ * Decode the /memory 'reg' property to determine the size and start of the
+ * first memory bank, populate the global data with the size and start of the
+ * first bank of memory.
+ *
+ * This function should be called from a boards dram_init(). This helper
+ * function allows for boards to query the device tree for DRAM size and start
+ * address instead of hard coding the value in the case where the memory size
+ * and start address cannot be detected automatically.
+ *
+ * @param blob         FDT blob
+ *
+ * @return 0 if OK, -EINVAL if the /memory node or reg property is missing or
+ * invalid
+ */
+int fdtdec_setup_mem_size_base_fdt(const void *blob);
+
+/**
  * fdtdec_setup_mem_size_base() - decode and setup gd->ram_size and
  * gd->ram_start
  *
@@ -923,6 +985,25 @@ int fdtdec_decode_display_timing(const void *blob, int node, int index,
 int fdtdec_setup_mem_size_base(void);
 
 /**
+ * fdtdec_setup_memory_banksize_fdt() - decode and populate gd->bd->bi_dram
+ *
+ * Decode the /memory 'reg' property to determine the address and size of the
+ * memory banks. Use this data to populate the global data board info with the
+ * phys address and size of memory banks.
+ *
+ * This function should be called from a boards dram_init_banksize(). This
+ * helper function allows for boards to query the device tree for memory bank
+ * information instead of hard coding the information in cases where it cannot
+ * be detected automatically.
+ *
+ * @param blob         FDT blob
+ *
+ * @return 0 if OK, -EINVAL if the /memory node or reg property is missing or
+ * invalid
+ */
+int fdtdec_setup_memory_banksize_fdt(const void *blob);
+
+/**
  * fdtdec_setup_memory_banksize() - decode and populate gd->bd->bi_dram
  *
  * Decode the /memory 'reg' property to determine the address and size of the
@@ -940,6 +1021,17 @@ int fdtdec_setup_mem_size_base(void);
 int fdtdec_setup_memory_banksize(void);
 
 /**
+ * fdtdec_set_phandle() - sets the phandle of a given node
+ *
+ * @param blob         FDT blob
+ * @param node         offset in the FDT blob of the node whose phandle is to
+ *                     be set
+ * @param phandle      phandle to set for the given node
+ * @return 0 on success or a negative error code on failure
+ */
+int fdtdec_set_phandle(void *blob, int node, uint32_t phandle);
+
+/**
  * Set up the device tree ready for use
  */
 int fdtdec_setup(void);