[U-Boot] [PATCH 2/3] ARM: rmobile: Ignore U-Boot env when started via JTAG on Porter

[Marek Vasut]

When U-Boot is started via JTAG, ignore the installed environment
as it may interfere with the recovery of the board.

Signed-off-by: Marek Vasut <marek.vasut+renesas at gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu at nigauri.org>
Cc: Tom Rini <trini at konsulko.com>
---
 board/renesas/porter/porter.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/board/renesas/porter/porter.c b/board/renesas/porter/porter.c
index acd4f91d59..052e1abe08 100644
--- a/board/renesas/porter/porter.c
+++ b/board/renesas/porter/porter.c
@@ -136,3 +136,13 @@ void reset_cpu(ulong addr)
 	if (ret)
 		hang();
 }
+
+int board_should_load_env(void)
+{
+	const u32 load_magic = 0xb33fc0de;
+
+	if (readl(CONFIG_SPL_TEXT_BASE + 0x24) == load_magic)
+		return 0;
+
+	return -EAGAIN;
+}
-- 
2.16.2