@@ -11,6 +11,7 @@
#include <malloc.h>
#include <dm.h>
#include <dm/platform_data/serial_sh.h>
+#include <environment.h>
#include <asm/processor.h>
#include <asm/mach-types.h>
#include <asm/io.h>
@@ -136,3 +137,18 @@ void reset_cpu(ulong addr)
if (ret)
hang();
}
+
+enum env_location env_get_location(enum env_operation op, int prio)
+{
+ const u32 load_magic = 0xb33fc0de;
+
+ /* Block environment access if loaded using JTAG */
+ if ((readl(CONFIG_SPL_TEXT_BASE + 0x24) == load_magic) &&
+ (op != ENVOP_INIT))
+ return ENVL_UNKNOWN;
+
+ if (prio)
+ return ENVL_UNKNOWN;
+
+ return ENVL_SPI_FLASH;
+}
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@gmail.com> Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> --- board/renesas/porter/porter.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)