[U-Boot] [PATCH 3/3] MIPS: bootm.c: add support for 'prep' and 'go' subcommands

[Gabor Juhos]

The bootm command supports subcommands since long time
however those subcommands are not yet usable on MIPS.

The patch is based on the ARM implementation, and it adds
support for the 'prep' and 'go' subcommands only.

Signed-off-by: Gabor Juhos <juhosg at openwrt.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck at googlemail.com>
---
 arch/mips/lib/bootm.c |   15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/arch/mips/lib/bootm.c b/arch/mips/lib/bootm.c
index 8c2e508..a36154a 100644
--- a/arch/mips/lib/bootm.c
+++ b/arch/mips/lib/bootm.c
@@ -104,8 +104,19 @@ static void boot_jump_linux(bootm_headers_t *images)
 int do_bootm_linux(int flag, int argc, char * const argv[],
 			bootm_headers_t *images)
 {
-	if ((flag != 0) && (flag != BOOTM_STATE_OS_GO))
-		return 1;
+	/* No need for those on MIPS */
+	if (flag & BOOTM_STATE_OS_BD_T || flag & BOOTM_STATE_OS_CMDLINE)
+		return -1;
+
+	if (flag & BOOTM_STATE_OS_PREP) {
+		boot_prep_linux(images);
+		return 0;
+	}
+
+	if (flag & BOOTM_STATE_OS_GO) {
+		boot_jump_linux(images);
+		return 0;
+	}
 
 	boot_prep_linux(images);
 	boot_jump_linux(images);
-- 
1.7.10