diff --git a/arch/avr/src/at32uc3/at32uc3_gpioirq.c b/arch/avr/src/at32uc3/at32uc3_gpioirq.c
index 57ab58aec4f..0972429bae2 100644
--- a/arch/avr/src/at32uc3/at32uc3_gpioirq.c
+++ b/arch/avr/src/at32uc3/at32uc3_gpioirq.c
@@ -228,7 +228,7 @@ static void gpio_porthandler(uint32_t regbase, int irqbase, uint32_t irqset, voi
                 }
               else
                 {
-                  llerr("No handler: pin=%d ifr=%08x irqset=%08x",
+                  llerr("ERROR: No handler: pin=%d ifr=%08x irqset=%08x",
                         pin, ifr, irqset);
                 }
             }
@@ -247,8 +247,8 @@ static void gpio_porthandler(uint32_t regbase, int irqbase, uint32_t irqset, voi
           putreg32(bit, regbase + AVR32_GPIO_IFRC_OFFSET);
           ifr &= ~bit;
 
-          llerr("IRQ on unconfigured pin: pin=%d ifr=%08x irqset=%08x",
-                pin, ifr, irqset);
+          llwarn("WARNING: IRQ on unconfigured pin: pin=%d ifr=%08x irqset=%08x",
+                 pin, ifr, irqset);
         }
     }
 }
diff --git a/arch/avr/src/at32uc3/at32uc3_irq.c b/arch/avr/src/at32uc3/at32uc3_irq.c
index 5e72f9a37ed..f6964b74042 100644
--- a/arch/avr/src/at32uc3/at32uc3_irq.c
+++ b/arch/avr/src/at32uc3/at32uc3_irq.c
@@ -177,7 +177,7 @@ static int up_getgrp(unsigned int irq)
 static int avr32_xcptn(int irq, FAR void *context)
 {
   (void)up_irq_save();
-  llerr("PANIC!!! Exception IRQ: %d\n", irq);
+  alert("PANIC!!! Exception IRQ: %d\n", irq);
   PANIC();
   return 0;
 }
@@ -321,11 +321,11 @@ unsigned int avr32_intirqno(unsigned int level)
           mask <<= 1;
         }
 
-       llerr("Spurious interrupt: group=%d IRR=%08x\n", group, irr);
+       llerr("ERROR: Spurious interrupt: group=%d IRR=%08x\n", group, irr);
        return -ENODEV;
     }
 
-  llerr("Bad group: %d\n", group);
+  llerr("ERROR: Bad group: %d\n", group);
   return AVR32_IRQ_BADVECTOR;
 }
 
diff --git a/arch/avr/src/avr/up_releasepending.c b/arch/avr/src/avr/up_releasepending.c
index 5bd675f10b5..2501d8340c4 100644
--- a/arch/avr/src/avr/up_releasepending.c
+++ b/arch/avr/src/avr/up_releasepending.c
@@ -66,7 +66,7 @@ void up_release_pending(void)
 {
   struct tcb_s *rtcb = this_task();
 
-  sllerr("From TCB=%p\n", rtcb);
+  sllinfo("From TCB=%p\n", rtcb);
 
   /* Merge the g_pendingtasks list into the ready-to-run task list */
 
diff --git a/arch/avr/src/avr/up_reprioritizertr.c b/arch/avr/src/avr/up_reprioritizertr.c
index e2e8cb45c23..24fdd401cd6 100644
--- a/arch/avr/src/avr/up_reprioritizertr.c
+++ b/arch/avr/src/avr/up_reprioritizertr.c
@@ -94,7 +94,7 @@ void up_reprioritize_rtr(struct tcb_s *tcb, uint8_t priority)
       struct tcb_s *rtcb = this_task();
       bool switch_needed;
 
-      sllerr("TCB=%p PRI=%d\n", tcb, priority);
+      sllinfo("TCB=%p PRI=%d\n", tcb, priority);
 
       /* Remove the tcb task from the ready-to-run list.
        * sched_removereadytorun will return true if we just
diff --git a/arch/avr/src/avr/up_schedulesigaction.c b/arch/avr/src/avr/up_schedulesigaction.c
index 6d067f8fc2c..16f7a335870 100644
--- a/arch/avr/src/avr/up_schedulesigaction.c
+++ b/arch/avr/src/avr/up_schedulesigaction.c
@@ -94,7 +94,7 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
 {
   irqstate_t flags;
 
-  serr("tcb=0x%p sigdeliver=0x%p\n", tcb, sigdeliver);
+  sinfo("tcb=0x%p sigdeliver=0x%p\n", tcb, sigdeliver);
 
   /* Make sure that interrupts are disabled */
 
@@ -108,7 +108,8 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
        * being delivered to the currently executing task.
        */
 
-      serr("rtcb=0x%p g_current_regs=0x%p\n", this_task(), g_current_regs);
+      sinfo("rtcb=0x%p g_current_regs=0x%p\n",
+            this_task(), g_current_regs);
 
       if (tcb == this_task())
         {
diff --git a/arch/avr/src/avr/up_sigdeliver.c b/arch/avr/src/avr/up_sigdeliver.c
index 96163e20f89..c73460793e6 100644
--- a/arch/avr/src/avr/up_sigdeliver.c
+++ b/arch/avr/src/avr/up_sigdeliver.c
@@ -82,7 +82,7 @@ void up_sigdeliver(void)
 
   board_autoled_on(LED_SIGNAL);
 
-  serr("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n",
+  sinfo("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n",
         rtcb, rtcb->xcp.sigdeliver, rtcb->sigpendactionq.head);
   ASSERT(rtcb->xcp.sigdeliver != NULL);
 
@@ -117,7 +117,7 @@ void up_sigdeliver(void)
    * errno that is needed by the user logic (it is probably EINTR).
    */
 
-  serr("Resuming\n");
+  sinfo("Resuming\n");
   (void)up_irq_save();
   rtcb->pterrno = saved_errno;
 
diff --git a/arch/avr/src/avr/up_spi.c b/arch/avr/src/avr/up_spi.c
index 6f13f7cd581..29b236dcb06 100644
--- a/arch/avr/src/avr/up_spi.c
+++ b/arch/avr/src/avr/up_spi.c
@@ -263,7 +263,7 @@ static uint32_t spi_setfrequency(FAR struct spi_dev_s *dev, uint32_t frequency)
       actual          = priv->actual;
     }
 
-  spierr("Frequency %d->%d\n", frequency, actual);
+  spiinfo("Frequency %d->%d\n", frequency, actual);
   return actual;
 }
 
@@ -402,7 +402,7 @@ static void spi_sndblock(FAR struct spi_dev_s *dev, FAR const void *buffer, size
 {
   FAR uint8_t *ptr = (FAR uint8_t *)buffer;
 
-  spierr("nwords: %d\n", nwords);
+  spiinfo("nwords: %d\n", nwords);
   while (nwords-- > 0)
     {
       (void)spi_send(dev, (uint16_t)*ptr++);
@@ -433,7 +433,7 @@ static void spi_recvblock(FAR struct spi_dev_s *dev, FAR void *buffer, size_t nw
 {
   FAR uint8_t *ptr = (FAR uint8_t *)buffer;
 
-  spierr("nwords: %d\n", nwords);
+  spiinfo("nwords: %d\n", nwords);
   while (nwords-- > 0)
     {
       *ptr++ = spi_send(dev, (uint16_t)0xff);
diff --git a/arch/avr/src/avr32/up_releasepending.c b/arch/avr/src/avr32/up_releasepending.c
index 9640d7d8448..29bc26dbf21 100644
--- a/arch/avr/src/avr32/up_releasepending.c
+++ b/arch/avr/src/avr32/up_releasepending.c
@@ -67,7 +67,7 @@ void up_release_pending(void)
 {
   struct tcb_s *rtcb = this_task();
 
-  sllerr("From TCB=%p\n", rtcb);
+  sllinfo("From TCB=%p\n", rtcb);
 
   /* Merge the g_pendingtasks list into the ready-to-run task list */
 
diff --git a/arch/avr/src/avr32/up_reprioritizertr.c b/arch/avr/src/avr32/up_reprioritizertr.c
index 6a39f526464..bf60353cf1f 100644
--- a/arch/avr/src/avr32/up_reprioritizertr.c
+++ b/arch/avr/src/avr32/up_reprioritizertr.c
@@ -95,7 +95,7 @@ void up_reprioritize_rtr(struct tcb_s *tcb, uint8_t priority)
       struct tcb_s *rtcb = this_task();
       bool switch_needed;
 
-      sllerr("TCB=%p PRI=%d\n", tcb, priority);
+      sllinfo("TCB=%p PRI=%d\n", tcb, priority);
 
       /* Remove the tcb task from the ready-to-run list.
        * sched_removereadytorun will return true if we just
diff --git a/arch/avr/src/avr32/up_schedulesigaction.c b/arch/avr/src/avr32/up_schedulesigaction.c
index f9bb311fe8a..4ec759448da 100644
--- a/arch/avr/src/avr32/up_schedulesigaction.c
+++ b/arch/avr/src/avr32/up_schedulesigaction.c
@@ -94,7 +94,7 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
 {
   irqstate_t flags;
 
-  serr("tcb=0x%p sigdeliver=0x%p\n", tcb, sigdeliver);
+  sinfo("tcb=0x%p sigdeliver=0x%p\n", tcb, sigdeliver);
 
   /* Make sure that interrupts are disabled */
 
@@ -108,7 +108,8 @@ void up_schedule_sigaction(struct tcb_s *tcb, sig_deliver_t sigdeliver)
        * being delivered to the currently executing task.
        */
 
-      serr("rtcb=0x%p g_current_regs=0x%p\n", this_task(), g_current_regs);
+      sinfo("rtcb=0x%p g_current_regs=0x%p\n",
+            this_task(), g_current_regs);
 
       if (tcb == this_task())
         {
diff --git a/arch/avr/src/avr32/up_sigdeliver.c b/arch/avr/src/avr32/up_sigdeliver.c
index ded924df874..811e4b031cb 100644
--- a/arch/avr/src/avr32/up_sigdeliver.c
+++ b/arch/avr/src/avr32/up_sigdeliver.c
@@ -86,7 +86,7 @@ void up_sigdeliver(void)
 
   board_autoled_on(LED_SIGNAL);
 
-  serr("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n",
+  sinfo("rtcb=%p sigdeliver=%p sigpendactionq.head=%p\n",
         rtcb, rtcb->xcp.sigdeliver, rtcb->sigpendactionq.head);
   ASSERT(rtcb->xcp.sigdeliver != NULL);
 
@@ -117,7 +117,7 @@ void up_sigdeliver(void)
    * errno that is needed by the user logic (it is probably EINTR).
    */
 
-  serr("Resuming\n");
+  sinfo("Resuming\n");
   (void)up_irq_save();
   rtcb->pterrno = saved_errno;
 
diff --git a/arch/avr/src/common/up_exit.c b/arch/avr/src/common/up_exit.c
index 2ceb474129d..73dd3bb353b 100644
--- a/arch/avr/src/common/up_exit.c
+++ b/arch/avr/src/common/up_exit.c
@@ -77,8 +77,8 @@ static void _up_dumponexit(FAR struct tcb_s *tcb, FAR void *arg)
   int i;
 #endif
 
-  serr("  TCB=%p name=%s pid=%d\n", tcb, tcb->argv[0], tcb->pid);
-  serr("    priority=%d state=%d\n", tcb->sched_priority, tcb->task_state);
+  sinfo("  TCB=%p name=%s pid=%d\n", tcb, tcb->argv[0], tcb->pid);
+  sinfo("    priority=%d state=%d\n", tcb->sched_priority, tcb->task_state);
 
 #if CONFIG_NFILE_DESCRIPTORS > 0
   filelist = tcb->group->tg_filelist;
@@ -87,8 +87,8 @@ static void _up_dumponexit(FAR struct tcb_s *tcb, FAR void *arg)
       struct inode *inode = filelist->fl_files[i].f_inode;
       if (inode)
         {
-          serr("      fd=%d refcount=%d\n",
-               i, inode->i_crefs);
+          sinfo("      fd=%d refcount=%d\n",
+                i, inode->i_crefs);
         }
     }
 #endif
@@ -101,11 +101,11 @@ static void _up_dumponexit(FAR struct tcb_s *tcb, FAR void *arg)
       if (filep->fs_fd >= 0)
         {
 #if CONFIG_STDIO_BUFFER_SIZE > 0
-          serr("      fd=%d nbytes=%d\n",
-               filep->fs_fd,
-               filep->fs_bufpos - filep->fs_bufstart);
+          sinfo("      fd=%d nbytes=%d\n",
+                filep->fs_fd,
+                filep->fs_bufpos - filep->fs_bufstart);
 #else
-          serr("      fd=%d\n", filep->fs_fd);
+          sinfo("      fd=%d\n", filep->fs_fd);
 #endif
         }
     }
@@ -138,10 +138,10 @@ void _exit(int status)
 
   (void)up_irq_save();
 
-  sllerr("TCB=%p exiting\n", this_task());
+  sllinfo("TCB=%p exiting\n", this_task());
 
 #if defined(CONFIG_DUMP_ON_EXIT) && defined(CONFIG_DEBUG_FEATURES)
-  sllerr("Other tasks:\n");
+  sllinfo("Other tasks:\n");
   sched_foreach(_up_dumponexit, NULL);
 #endif
 
diff --git a/arch/avr/src/common/up_initialize.c b/arch/avr/src/common/up_initialize.c
index 6171403c035..8f58cdcf6ee 100644
--- a/arch/avr/src/common/up_initialize.c
+++ b/arch/avr/src/common/up_initialize.c
@@ -125,13 +125,13 @@ static void up_calibratedelay(void)
 {
   int i;
 
-  llerr("Beginning 100s delay\n");
+  llwarn("Beginning 100s delay\n");
   for (i = 0; i < 100; i++)
     {
       up_mdelay(1000);
     }
 
-  llerr("End 100s delay\n");
+  llwarn("End 100s delay\n");
 }
 #else
 # define up_calibratedelay()