bootm: Split out code from cmd_bootm.c
This file has code in three different categories:
- Command processing
- OS-specific boot code
- Locating images and setting up to boot
Only the first category really belongs in a file called cmd_bootm.c.
Leave the command processing code where it is. Split out the OS-specific
boot code into bootm_os.c. Split out the other code into bootm.c
Header files and extern declarations are tidied but otherwise no code
changes are made, to make it easier to review.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/include/bootm.h b/include/bootm.h
new file mode 100644
index 0000000..0a3ec56
--- /dev/null
+++ b/include/bootm.h
@@ -0,0 +1,55 @@
+/*
+ * (C) Copyright 2000-2009
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef _BOOTM_H
+#define _BOOTM_H
+
+#include <command.h>
+#include <image.h>
+
+#define BOOTM_ERR_RESET (-1)
+#define BOOTM_ERR_OVERLAP (-2)
+#define BOOTM_ERR_UNIMPLEMENTED (-3)
+
+/*
+ * Continue booting an OS image; caller already has:
+ * - copied image header to global variable `header'
+ * - checked header magic number, checksums (both header & image),
+ * - verified image architecture (PPC) and type (KERNEL or MULTI),
+ * - loaded (first part of) image to header load address,
+ * - disabled interrupts.
+ *
+ * @flag: Flags indicating what to do (BOOTM_STATE_...)
+ * @argc: Number of arguments. Note that the arguments are shifted down
+ * so that 0 is the first argument not processed by U-Boot, and
+ * argc is adjusted accordingly. This avoids confusion as to how
+ * many arguments are available for the OS.
+ * @images: Pointers to os/initrd/fdt
+ * @return 1 on error. On success the OS boots so this function does
+ * not return.
+ */
+typedef int boot_os_fn(int flag, int argc, char * const argv[],
+ bootm_headers_t *images);
+
+extern boot_os_fn do_bootm_linux;
+int do_bootelf(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]);
+void lynxkdi_boot(image_header_t *hdr);
+
+boot_os_fn *bootm_os_get_boot_func(int os);
+
+int boot_selected_os(int argc, char * const argv[], int state,
+ bootm_headers_t *images, boot_os_fn *boot_fn);
+
+ulong bootm_disable_interrupts(void);
+
+/* This is a special function used by bootz */
+int bootm_find_ramdisk_fdt(int flag, int argc, char * const argv[]);
+
+int do_bootm_states(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[],
+ int states, bootm_headers_t *images, int boot_progress);
+
+#endif