[PATCH 17/29] bootm: Reduce arguments to boot_get_ramdisk()

[Simon Glass]

This function normally only uses one argument so pass it in directly.
Move comments to the header file so could one day include these
functions in API docs. Fix up the u8 argument while here, since it
avoids the compiler having to mask the value on some machines.

The Android case here is bit strange, since it can use argv[0], so deal
with that in the caller.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 boot/bootm.c       | 15 ++++++++++++++-
 boot/image-board.c | 39 ++-------------------------------------
 include/image.h    | 27 +++++++++++++++++++++++++--
 3 files changed, 41 insertions(+), 40 deletions(-)

diff --git a/boot/bootm.c b/boot/bootm.c
index 2358d68c2861..5782a1e2a57b 100644
--- a/boot/bootm.c
+++ b/boot/bootm.c
@@ -488,10 +488,23 @@ static int bootm_find_os(const char *addr_fit)
 int bootm_find_images(int flag, int argc, char *const argv[], ulong start,
 		      ulong size)
 {
+	const char *select = NULL;
 	int ret;
 
+	if (IS_ENABLED(CONFIG_ANDROID_BOOT_IMAGE)) {
+		char *buf;
+
+		/* Look for an Android boot image */
+		buf = map_sysmem(images.os.start, 0);
+		if (buf && genimg_get_format(buf) == IMAGE_FORMAT_ANDROID)
+			select = argc ? argv[0] : env_get("loadaddr");
+	}
+
+	if (argc >= 2)
+		select = argv[1];
+
 	/* find ramdisk */
-	ret = boot_get_ramdisk(argc, argv, &images, IH_INITRD_ARCH,
+	ret = boot_get_ramdisk(select, &images, IH_INITRD_ARCH,
 			       &images.rd_start, &images.rd_end);
 	if (ret) {
 		puts("Ramdisk image is corrupt or invalid\n");
diff --git a/boot/image-board.c b/boot/image-board.c
index 062c76badecc..60e514fc150e 100644
--- a/boot/image-board.c
+++ b/boot/image-board.c
@@ -456,49 +456,14 @@ static int select_ramdisk(struct bootm_headers *images, const char *select, u8 a
 	return 0;
 }
 
-/**
- * boot_get_ramdisk - main ramdisk handling routine
- * @argc: command argument count
- * @argv: command argument list
- * @images: pointer to the bootm images structure
- * @arch: expected ramdisk architecture
- * @rd_start: pointer to a ulong variable, will hold ramdisk start address
- * @rd_end: pointer to a ulong variable, will hold ramdisk end
- *
- * boot_get_ramdisk() is responsible for finding a valid ramdisk image.
- * Currently supported are the following ramdisk sources:
- *      - multicomponent kernel/ramdisk image,
- *      - commandline provided address of decicated ramdisk image.
- *
- * returns:
- *     0, if ramdisk image was found and valid, or skiped
- *     rd_start and rd_end are set to ramdisk start/end addresses if
- *     ramdisk image is found and valid
- *
- *     1, if ramdisk image is found but corrupted, or invalid
- *     rd_start and rd_end are set to 0 if no ramdisk exists
- */
-int boot_get_ramdisk(int argc, char *const argv[], struct bootm_headers *images,
-		     u8 arch, ulong *rd_start, ulong *rd_end)
+int boot_get_ramdisk(char const *select, struct bootm_headers *images,
+		     uint arch, ulong *rd_start, ulong *rd_end)
 {
 	ulong rd_data, rd_len;
-	const char *select = NULL;
 
 	*rd_start = 0;
 	*rd_end = 0;
 
-	if (IS_ENABLED(CONFIG_ANDROID_BOOT_IMAGE)) {
-		char *buf;
-
-		/* Look for an Android boot image */
-		buf = map_sysmem(images->os.start, 0);
-		if (buf && genimg_get_format(buf) == IMAGE_FORMAT_ANDROID)
-			select = (argc == 0) ? env_get("loadaddr") : argv[0];
-	}
-
-	if (argc >= 2)
-		select = argv[1];
-
 	/*
 	 * Look for a '-' which indicates to ignore the
 	 * ramdisk argument
diff --git a/include/image.h b/include/image.h
index d37e44721672..3e48ad5b303e 100644
--- a/include/image.h
+++ b/include/image.h
@@ -644,8 +644,31 @@ int genimg_has_config(struct bootm_headers *images);
 
 int boot_get_fpga(int argc, char *const argv[], struct bootm_headers *images,
 		  uint8_t arch, const ulong *ld_start, ulong * const ld_len);
-int boot_get_ramdisk(int argc, char *const argv[], struct bootm_headers *images,
-		     uint8_t arch, ulong *rd_start, ulong *rd_end);
+
+/**
+ * boot_get_ramdisk() - Locate the ramdisk
+ *
+ * @select: address or name of ramdisk to use, or NULL for default
+ * @images: pointer to the bootm images structure
+ * @arch: expected ramdisk architecture
+ * @rd_start: pointer to a ulong variable, will hold ramdisk start address
+ * @rd_end: pointer to a ulong variable, will hold ramdisk end
+ *
+ * boot_get_ramdisk() is responsible for finding a valid ramdisk image.
+ * Currently supported are the following ramdisk sources:
+ *      - multicomponent kernel/ramdisk image,
+ *      - commandline provided address of decicated ramdisk image.
+ *
+ * returns:
+ *     0, if ramdisk image was found and valid, or skiped
+ *     rd_start and rd_end are set to ramdisk start/end addresses if
+ *     ramdisk image is found and valid
+ *
+ *     1, if ramdisk image is found but corrupted, or invalid
+ *     rd_start and rd_end are set to 0 if no ramdisk exists
+ */
+int boot_get_ramdisk(char const *select, struct bootm_headers *images,
+		     uint arch, ulong *rd_start, ulong *rd_end);
 
 /**
  * boot_get_loadable - routine to load a list of binaries to memory
-- 
2.42.0.869.gea05f2083d-goog