X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Ffdtdec.h;h=abfd678424b5521d7cf941f1542b4dacef163cbd;hb=746667f1e56bf08d03e66a178df3c4f4f6c806e1;hp=2590d3071fd0353eb7e96f667e74bb089c3a476a;hpb=2a8c9c86b92a9ccee3c27286de317e19bb0530b3;p=platform%2Fkernel%2Fu-boot.git
diff --git a/include/fdtdec.h b/include/fdtdec.h
index 2590d30..abfd678 100644
--- a/include/fdtdec.h
+++ b/include/fdtdec.h
@@ -40,6 +40,27 @@ struct fdt_memory {
fdt_addr_t end;
};
+/*
+ * Information about a resource. start is the first address of the resource
+ * and end is the last address (inclusive). The length of the resource will
+ * be equal to: end - start + 1.
+ */
+struct fdt_resource {
+ fdt_addr_t start;
+ fdt_addr_t end;
+};
+
+/**
+ * Compute the size of a resource.
+ *
+ * @param res the resource to operate on
+ * @return the size of the resource
+ */
+static inline fdt_size_t fdt_resource_size(const struct fdt_resource *res)
+{
+ return res->end - res->start + 1;
+}
+
/**
* Compat types that we know about and for which we might have drivers.
* Each is named COMPAT_
_ where is the directory
@@ -96,6 +117,9 @@ enum fdt_compat_id {
COMPAT_NXP_PTN3460, /* NXP PTN3460 DP/LVDS bridge */
COMPAT_SAMSUNG_EXYNOS_SYSMMU, /* Exynos sysmmu */
COMPAT_PARADE_PS8625, /* Parade PS8622 EDP->LVDS bridge */
+ COMPAT_INTEL_LPC, /* Intel Low Pin Count I/F */
+ COMPAT_INTEL_MICROCODE, /* Intel microcode update */
+ COMPAT_MEMORY_SPD, /* Memory SPD information */
COMPAT_COUNT,
};
@@ -423,6 +447,22 @@ int fdtdec_get_int_array(const void *blob, int node, const char *prop_name,
u32 *array, int count);
/**
+ * Look up a property in a node and return its contents in an integer
+ * array of given length. The property must exist but may have less data that
+ * expected (4*count bytes). It may have more, but this will be ignored.
+ *
+ * @param blob FDT blob
+ * @param node node to examine
+ * @param prop_name name of property to find
+ * @param array array to fill with data
+ * @param count number of array elements
+ * @return number of array elements if ok, or -FDT_ERR_NOTFOUND if the
+ * property is not found
+ */
+int fdtdec_get_int_array_count(const void *blob, int node,
+ const char *prop_name, u32 *array, int count);
+
+/**
* Look up a property in a node and return a pointer to its contents as a
* unsigned int array of given length. The property must have at least enough
* data for the array ('count' cells). It may have more, but this will be
@@ -597,4 +637,46 @@ struct fmap_entry {
*/
int fdtdec_read_fmap_entry(const void *blob, int node, const char *name,
struct fmap_entry *entry);
+
+/**
+ * Obtain an indexed resource from a device property.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param property name of the property to parse
+ * @param index index of the resource to retrieve
+ * @param res returns the resource
+ * @return 0 if ok, negative on error
+ */
+int fdt_get_resource(const void *fdt, int node, const char *property,
+ unsigned int index, struct fdt_resource *res);
+
+/**
+ * Obtain a named resource from a device property.
+ *
+ * Look up the index of the name in a list of strings and return the resource
+ * at that index.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param property name of the property to parse
+ * @param prop_names name of the property containing the list of names
+ * @param name the name of the entry to look up
+ * @param res returns the resource
+ */
+int fdt_get_named_resource(const void *fdt, int node, const char *property,
+ const char *prop_names, const char *name,
+ struct fdt_resource *res);
+
+/**
+ * Look at the reg property of a device node that represents a PCI device
+ * and parse the bus, device and function number from it.
+ *
+ * @param fdt FDT blob
+ * @param node node to examine
+ * @param bdf returns bus, device, function triplet
+ * @return 0 if ok, negative on error
+ */
+int fdtdec_pci_get_bdf(const void *fdt, int node, int *bdf);
+
#endif