Check jumpers JP7 and JP8 before accepting new firmware or bootloader images.

Unfortunately, we can't read the jumper GPIOs directly, as that just gives
us the last values written to them, so we see if we can read the FPGA
configuration memory.

1 files changed, 13 insertions, 0 deletions

diff --git a/projects/hsm/mgmt-firmware.c b/projects/hsm/mgmt-firmware.c
index 1a0e184..e4d3b0c 100644
--- a/projects/hsm/mgmt-firmware.c
+++ b/projects/hsm/mgmt-firmware.c
@@ -38,6 +38,7 @@
 #include "mgmt-cli.h"
 #include "stm-uart.h"
 #include "stm-flash.h"
+#include "stm-fpgacfg.h"
 
 #undef HAL_OK
 #define HAL_OK LIBHAL_OK
@@ -53,6 +54,18 @@ static int cmd_firmware_upload(struct cli_def *cli, const char *command, char *a
         return CLI_ERROR;
     }
 
+    /* JP7 and JP8 must be installed in order to reprogram the FPGA.
+     * We extend this to an enabling mechanism for reflashing the firmware.
+     * Unfortunately, we can't read JP7 and JP8 directly, as that just gives
+     * us the last things written to them, so we see if we can read the
+     * FPGA configuration memory.
+     */
+    fpgacfg_access_control(ALLOW_ARM);
+    if (fpgacfg_check_id() != 1) {
+	cli_print(cli, "ERROR: Check that jumpers JP7 and JP8 are installed.");
+        return CLI_ERROR;
+    }
+
     /* reboot and let the bootloader handle the upload */
     cli_print(cli, "\n\n\nRebooting\n\n\n");
     HAL_NVIC_SystemReset();