spl: Add support for passing handoff info to U-Boot proper

There is some basic informaton that SPL normally wants to pass through to
U-Boot, such as the SDRAM size and bank information.

Mkae use of the new bloblist structure for this. Add a new 'handoff' blob
which is set up in SPL and passed to U-Boot proper. Also adda  test for
sandbox_spl that checks that this works correctly and a new 'sb' command
to show the information passed from SPL.

Reviewed-by: Tom Rini <trini@konsulko.com>
Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 20 insertions, 1 deletions

diff --git a/cmd/sb.c b/cmd/sb.c
index 6ca3361d7e3..5701e03797c 100644
--- a/cmd/sb.c
+++ b/cmd/sb.c
@@ -9,6 +9,23 @@
 #include <spl.h>
 #include <asm/state.h>
 
+static int do_sb_handoff(cmd_tbl_t *cmdtp, int flag, int argc,
+			 char *const argv[])
+{
+#if CONFIG_IS_ENABLED(HANDOFF)
+	if (gd->spl_handoff)
+		printf("SPL handoff magic %lx\n", gd->spl_handoff->arch.magic);
+	else
+		printf("SPL handoff info not received\n");
+
+	return 0;
+#else
+	printf("Command not supported\n");
+
+	return CMD_RET_USAGE;
+#endif
+}
+
 static int do_sb_state(cmd_tbl_t *cmdtp, int flag, int argc,
 		       char * const argv[])
 {
@@ -21,6 +38,7 @@ static int do_sb_state(cmd_tbl_t *cmdtp, int flag, int argc,
 }
 
 static cmd_tbl_t cmd_sb_sub[] = {
+	U_BOOT_CMD_MKENT(handoff, 1, 0, do_sb_handoff, "", ""),
 	U_BOOT_CMD_MKENT(state, 1, 0, do_sb_state, "", ""),
 };
 
@@ -42,5 +60,6 @@ static int do_sb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 U_BOOT_CMD(
 	sb,	8,	1,	do_sb,
 	"Sandbox status commands",
-	"state       - Show sandbox state"
+	"handoff     - Show handoff data received from SPL\n"
+	"sb state       - Show sandbox state"
 );