hab_failsafe when called puts the part into BootROM recovery mode.
This will allow u-boot scripts to script the dropping down into recovery
mode.

=> hab_failsafe

Shows the i.MX7 appear as "hiddev0,hidraw5: USB HID v1.10 Device [Freescale
SemiConductor Inc  SP Blank ULT1] " in a Linux dmesg thus allowing download
of a new image via the BootROM USB download protocol routine.

Signed-off-by: Bryan O'Donoghue <bryan.odonog...@linaro.org>
Cc: Stefano Babic <sba...@denx.de>
Cc: Fabio Estevam <fabio.este...@nxp.com>
Cc: Peng Fan <peng....@nxp.com>
Cc: Albert Aribaud <albert.u.b...@aribaud.net>
Cc: Sven Ebenfeld <sven.ebenf...@gmail.com>
Cc: George McCollister <george.mccollis...@gmail.com>
Cc: Breno Matheus Lima <brenomath...@gmail.com>
---
 arch/arm/mach-imx/hab.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/mach-imx/hab.c b/arch/arm/mach-imx/hab.c
index 8d04917..5da09d5 100644
--- a/arch/arm/mach-imx/hab.c
+++ b/arch/arm/mach-imx/hab.c
@@ -414,6 +414,22 @@ static int do_authenticate_image(cmd_tbl_t *cmdtp, int 
flag, int argc,
        return rcode;
 }
 
+static int do_hab_failsafe(cmd_tbl_t *cmdtp, int flag, int argc,
+                          char * const argv[])
+{
+       hab_rvt_failsafe_t *hab_rvt_failsafe;
+
+       if (argc != 1) {
+               cmd_usage(cmdtp);
+               return 1;
+       }
+
+       hab_rvt_failsafe = hab_rvt_failsafe_p;
+       hab_rvt_failsafe();
+
+       return 0;
+}
+
 U_BOOT_CMD(
                hab_status, CONFIG_SYS_MAXARGS, 1, do_hab_status,
                "display HAB status",
@@ -429,6 +445,11 @@ U_BOOT_CMD(
                "ivt_offset - hex offset of IVT in the image"
          );
 
+U_BOOT_CMD(
+               hab_failsafe, CONFIG_SYS_MAXARGS, 1, do_hab_failsafe,
+               "run BootROM failsafe routine",
+               ""
+         );
 
 #endif /* !defined(CONFIG_SPL_BUILD) */
 
-- 
2.7.4

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