Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / seabios / src / fw / romfile_loader.h

diff --git a/qemu/roms/seabios/src/fw/romfile_loader.h b/qemu/roms/seabios/src/fw/romfile_loader.h
new file mode 100644 (file)
index 0000000..15eab2a
--- /dev/null
+++ b/qemu/roms/seabios/src/fw/romfile_loader.h
@@ -0,0 +1,72 @@
+#ifndef __ROMFILE_LOADER_H
+#define __ROMFILE_LOADER_H
+
+#include "types.h" // u8
+#include "util.h" // romfile_s
+
+#define ROMFILE_LOADER_FILESZ 56
+
+/* ROM file linker/loader interface. Linker uses little endian format */
+struct romfile_loader_entry_s {
+    u32 command;
+    union {
+        /*
+         * COMMAND_ALLOCATE - allocate a table from @alloc_file
+         * subject to @alloc_align alignment (must be power of 2)
+         * and @alloc_zone (can be HIGH or FSEG) requirements.
+         *
+         * Must appear exactly once for each file, and before
+         * this file is referenced by any other command.
+         */
+        struct {
+            char alloc_file[ROMFILE_LOADER_FILESZ];
+            u32 alloc_align;
+            u8 alloc_zone;
+        };
+
+        /*
+         * COMMAND_ADD_POINTER - patch the table (originating from
+         * @dest_file) at @pointer_offset, by adding a pointer to the table
+         * originating from @src_file. 1,2,4 or 8 byte unsigned
+         * addition is used depending on @pointer_size.
+         */
+        struct {
+            char pointer_dest_file[ROMFILE_LOADER_FILESZ];
+            char pointer_src_file[ROMFILE_LOADER_FILESZ];
+            u32 pointer_offset;
+            u8 pointer_size;
+        };
+
+        /*
+         * COMMAND_ADD_CHECKSUM - calculate checksum of the range specified by
+         * @cksum_start and @cksum_length fields,
+         * and then add the value at @cksum_offset.
+         * Checksum simply sums -X for each byte X in the range
+         * using 8-bit math.
+         */
+        struct {
+            char cksum_file[ROMFILE_LOADER_FILESZ];
+            u32 cksum_offset;
+            u32 cksum_start;
+            u32 cksum_length;
+        };
+
+        /* padding */
+        char pad[124];
+    };
+};
+
+enum {
+    ROMFILE_LOADER_COMMAND_ALLOCATE     = 0x1,
+    ROMFILE_LOADER_COMMAND_ADD_POINTER  = 0x2,
+    ROMFILE_LOADER_COMMAND_ADD_CHECKSUM = 0x3,
+};
+
+enum {
+    ROMFILE_LOADER_ALLOC_ZONE_HIGH = 0x1,
+    ROMFILE_LOADER_ALLOC_ZONE_FSEG = 0x2,
+};
+
+int romfile_loader_execute(const char *name);
+
+#endif