Fix pin lock issue during io reset

Author: yogh333

ledger_device_sdk/src/nbgl.rs

@@ -8,9 +8,6 @@ use core::ffi::{c_char, c_int};
 use core::mem::transmute;
 use ledger_secure_sdk_sys::*;
 
-#[no_mangle]
-static mut G_ux_params: bolos_ux_params_t = unsafe { const_zero!(bolos_ux_params_t) };
-
 pub mod nbgl_address_review;
 pub mod nbgl_choice;
 pub mod nbgl_generic_review;

ledger_secure_sdk_sys/src/c/src.c

@@ -266,6 +266,8 @@ void c_reset_bss() {
   memset(bss, 0, bss_len);
 }
 
+bolos_ux_params_t G_ux_params;
+
 void c_boot_std() {
     // below is a 'manual' implementation of `io_seproxyhal_init`
 #ifdef HAVE_MCU_PROTECT
@@ -277,6 +279,19 @@ void c_boot_std() {
     io_seproxyhal_spi_send(c, 4);
 #endif
 
+    // Warn UX layer of io reset to avoid unwanted pin lock
+    memset(&G_ux_params, 0, sizeof(G_ux_params));
+    G_ux_params.ux_id = BOLOS_UX_IO_RESET;
+
+    // If the app has just been booted from the UX, multiple os_ux calls may be necessary
+    // to ensure UX layer has take the BOLOS_UX_IO_RESET instruction into account.
+    for (uint8_t i = 0; i < 2; i++) {
+        os_ux(&G_ux_params);
+        if (os_sched_last_status(TASK_BOLOS_UX) == BOLOS_UX_OK) {
+            break;
+        }
+    }
+
 #ifdef HAVE_BLE
     unsigned int plane = G_io_app.plane_mode;
 #endif