imx95_a55: guard the stage 1 console on DEBUG_UART and widen the fault dump

Author: dgarske

hal/imx95_a55_stage1.c

@@ -490,7 +490,11 @@ static int stage1_read(void *ctx, uint32_t off, uint32_t len, void *buf)
  * instruction and the faulting address. */
 void imx95_stage1_fault(uint64_t esr, uint64_t elr, uint64_t far)
 {
-    wolfBoot_printf("stage1: exception ESR=0x%x%x ELR=0x%x%x FAR=0x%x%x\n",
+    /* Two halves, because the small printf may lack long long. The low word
+     * needs the width or its leading zeros are dropped and the halves run
+     * together, which misreports the register exactly when it matters. */
+    wolfBoot_printf("stage1: exception ESR=0x%08x%08x ELR=0x%08x%08x "
+        "FAR=0x%08x%08x\n",
         (unsigned)(esr >> 32), (unsigned)esr,
         (unsigned)(elr >> 32), (unsigned)elr,
         (unsigned)(far >> 32), (unsigned)far);
@@ -582,8 +586,10 @@ static int stage1_boot(void)
         /* Nothing can be reported: this is what the console runs on. */
         return -1;
     }
+#if defined(DEBUG_UART)
     uart_init();
     wolfBoot_printf("\nwolfBoot stage 1: NXP i.MX95 Cortex-A55\n");
+#endif
 
     if (imx95_stage1_platform_init() != 0)
         return -1;