binman: Allow setting the ROM offset
On x86 the SPI ROM can be memory-mapped, at least most of it. Add a way
to tell binman the offset from a ROM address to a RAM address.
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 b462dc8..baf49f7 100644
--- a/include/binman.h
+++ b/include/binman.h
@@ -21,6 +21,14 @@
};
/**
+ * binman_set_rom_offset() - Set the ROM memory-map offset
+ *
+ * @rom_offset: Offset from an image_pos to the memory-mapped address. This
+ * tells binman that ROM image_pos x can be addressed at rom_offset + x
+ */
+void binman_set_rom_offset(int rom_offset);
+
+/**
* binman_entry_find() - Find a binman symbol
*
* This searches the binman information in the device tree for a symbol of the
diff --git a/lib/binman.c b/lib/binman.c
index fd7de24..dc3a880 100644
--- a/lib/binman.c
+++ b/lib/binman.c
@@ -12,10 +12,21 @@
#include <log.h>
#include <malloc.h>
+/**
+ * struct binman_info - Information needed by the binman library
+ *
+ * @image: Node describing the image we are running from
+ * @rom_offset: Offset from an image_pos to the memory-mapped address, or
+ * ROM_OFFSET_NONE if the ROM is not memory-mapped. Can be positive or
+ * negative
+ */
struct binman_info {
ofnode image;
+ int rom_offset;
};
+#define ROM_OFFSET_NONE (-1)
+
static struct binman_info *binman;
int binman_entry_find(const char *name, struct binman_entry *entry)
@@ -37,6 +48,11 @@
return 0;
}
+void binman_set_rom_offset(int rom_offset)
+{
+ binman->rom_offset = rom_offset;
+}
+
int binman_init(void)
{
binman = malloc(sizeof(struct binman_info));
@@ -45,6 +61,7 @@
binman->image = ofnode_path("/binman");
if (!ofnode_valid(binman->image))
return log_msg_ret("binman node", -EINVAL);
+ binman->rom_offset = ROM_OFFSET_NONE;
return 0;
}