binman: Add way to locate an entry in memory

Add support for accessing an entry's contents in memory-mapped SPI flash.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/include/binman.h b/include/binman.h
index baf49f7..e0b9207 100644 (file)
--- a/include/binman.h
+++ b/include/binman.h
@@ -9,6 +9,8 @@
 #ifndef _BINMAN_H_
 #define _BINMAN_H_
 
+#include <dm/ofnode.h>
+
 /**
  *struct binman_entry - information about a binman entry
  *
@@ -21,6 +23,18 @@ struct binman_entry {
 };
 
 /**
+ * binman_entry_map() - Look up the address of an entry in memory
+ *
+ * @parent: Parent binman node
+ * @name: Name of entry
+ * @bufp: Returns a pointer to the entry
+ * @sizep: Returns the size of the entry
+ * @return 0 on success, -EPERM if the ROM offset is not set, -ENOENT if the
+ *     entry cannot be found, other error code other error
+ */
+int binman_entry_map(ofnode parent, const char *name, void **bufp, int *sizep);
+
+/**
  * binman_set_rom_offset() - Set the ROM memory-map offset
  *
  * @rom_offset: Offset from an image_pos to the memory-mapped address. This
@@ -42,6 +56,14 @@ void binman_set_rom_offset(int rom_offset);
 int binman_entry_find(const char *name, struct binman_entry *entry);
 
 /**
+ * binman_section_find_node() - Find a binman node
+ *
+ * @name: Name of node to look for
+ * @return Node that was found, ofnode_null() if not found
+ */
+ofnode binman_section_find_node(const char *name);
+
+/**
  * binman_init() - Set up the binman symbol information
  *
  * This locates the binary symbol information in the device tree ready for use

diff --git a/lib/binman.c b/lib/binman.c
index 9098a1d..7a8ad62 100644 (file)
--- a/lib/binman.c
+++ b/lib/binman.c
@@ -11,6 +11,7 @@
 #include <dm.h>
 #include <log.h>
 #include <malloc.h>
+#include <mapmem.h>
 
 /**
  * struct binman_info - Information needed by the binman library
@@ -55,6 +56,28 @@ int binman_entry_find(const char *name, struct binman_entry *entry)
        return binman_entry_find_internal(binman->image, name, entry);
 }
 
+int binman_entry_map(ofnode parent, const char *name, void **bufp, int *sizep)
+{
+       struct binman_entry entry;
+       int ret;
+
+       if (binman->rom_offset == ROM_OFFSET_NONE)
+               return -EPERM;
+       ret = binman_entry_find_internal(parent, name, &entry);
+       if (ret)
+               return log_msg_ret("entry", ret);
+       if (sizep)
+               *sizep = entry.size;
+       *bufp = map_sysmem(entry.image_pos + binman->rom_offset, entry.size);
+
+       return 0;
+}
+
+ofnode binman_section_find_node(const char *name)
+{
+       return ofnode_find_subnode(binman->image, name);
+}
+
 void binman_set_rom_offset(int rom_offset)
 {
        binman->rom_offset = rom_offset;