Start on MIMXRT1060_EVK support. App boots but won't update yet...

Author: multiplemonomials

SimpleApp.cpp

@@ -26,7 +26,10 @@ int main()
     mbed_trace_include_filters_set("SimpleApp,MCUb,BL");
 
     DigitalIn btn(DEMO_BUTTON);
+
+#ifdef LED1
     DigitalOut led(LED1);
+#endif
 
     // Check if an update has been performed
     int swap_type = boot_swap_type();
@@ -81,12 +84,15 @@ int main()
     {
         ThisThread::sleep_for(1s);
         printf("Simple app is running...\n");
+
+#ifdef LED1
         led = 1;
         ThisThread::sleep_for(250ms);
         led = 0;
         ThisThread::sleep_for(250ms);
         led = 1;
         ThisThread::sleep_for(250ms);
         led = 0;
+#endif
     }
 }

UpdaterApp.cpp

@@ -45,6 +45,17 @@ int main()
         tr_error("Cannot init secondary BlockDevice: %d", ret);
     }
 
+    tr_info(" ");
+    tr_info("mcuboot configuration: -----------------------------------");
+    tr_info("- Primary slot: start address 0x%x, size %ukiB", MCUBOOT_PRIMARY_SLOT_START_ADDR, MCUBOOT_SLOT_SIZE/1024);
+    tr_info("  - Header size: 0x%x", MCUBOOT_HEADER_SIZE);
+    tr_info("  - Max flash sectors per slot: %u", MCUBOOT_MAX_IMG_SECTORS);
+    tr_info("- Scratch area: start address 0x%x, size %ukiB", MCUBOOT_SCRATCH_START_ADDR, MCUBOOT_SCRATCH_SIZE/1024);
+    tr_info("- Secondary BD: size %" PRIu64 "kiB", secondary_bd->size()/1024);
+    tr_info("  - Program (block) size %" PRIu64 " bytes", secondary_bd->get_program_size());
+    tr_info("  - Erase (sector) size %" PRIu64 " bytes", secondary_bd->get_erase_size());
+    tr_info(" ");
+
     // Erase secondary slot
     // On the first boot, the secondary BlockDevice needs to be clean
     // If the first boot is not normal, please run the erase step, then reboot
@@ -89,6 +100,9 @@ int main()
         tr_error("Cannot deinit secondary BlockDevice: %d", ret);
     }
 
+    // Give user time to react, as programming can be pretty fast
+    ThisThread::sleep_for(250ms);
+
     // Activate the image in the secondary BlockDevice
     tr_info("> Image copied to secondary BlockDevice, press button to activate");
 

mbed-os

@@ -10,12 +10,16 @@
             "macro_name": "DEMO_BUTTON_ACTIVE_LOW",
             "required": false
         },
+        "secondary-slot-in-flash": {
+            "help": "If enabled, store the secondary slot in the application flash immediately after the primary slot.",
+            "value": false
+        },
+        "secondary-slot-flash-start-addr": {
+            "help": "If secondary-slot-in-flash is enabled, this sets the start address of the secondary slot.",
+            "value": null
+        }
     },
 
-    "macros": [
-        "MBEDTLS_CIPHER_MODE_CTR"
-    ],
-
     "target_overrides": {
         "*": {
             "mcuboot.bootloader-build": 0,
@@ -81,8 +85,36 @@
             "mcuboot.scratch-address": "0xE0000",
             "mcuboot.scratch-size": "0x20000",
 
-            "mcuboot.max-img-sectors": "0x180",
+            "mcuboot.max-img-sectors": "1536", // External SD card has smaller sector size, so divide slot size by read granularity
             "mcuboot.read-granularity": 512 // External SD card used as block device, this is its read size.
+        },
+
+        "MIMXRT1060_EVK": {
+            "target.memory_bank_config": {
+                "EXT_FLASH": {
+                    "start": 0x60021000, // mcuboot.primary-slot-address + mcuboot.header-size
+                    "size": 0x2FF000 // mcuboot.slot-size - mcuboot.header-size
+                }
+            },
+
+            // Primary slot is 3MiB and begins right after the bootloader
+            "mcuboot.primary-slot-address": "0x60020000",
+            "mcuboot.slot-size": "0x300000",
+
+            // Use flash for secondary slot as well
+            "secondary-slot-in-flash": true,
+            "secondary-slot-flash-start-addr": "0x60320000",
+
+            // Store the scratch space at the end of flash
+            "mcuboot.scratch-address": "0x60620000",
+            "mcuboot.scratch-size": "0x20000",
+
+            "mcuboot.read-granularity": 1, // Flash is byte addressable
+
+            "mcuboot.max-img-sectors": 768, // Maximum flash sectors per slot. 3MiB/4kiB = 768.
+            "mcuboot.flash-block-size": 256,
+
+            "demo-button-active-low": true
         }
-    }
+    },
 }

mbed_app.json5

@@ -1,5 +1,5 @@
 /*
- * default_bd.cpp
+* default_bd.cpp
  *
  *  Created on: Jul 30, 2020
  *      Author: gdbeckstein
@@ -15,8 +15,8 @@
 
 mbed::BlockDevice* get_secondary_bd(void) {
 
-    // Use a section of FlashIAP immediately after the secondary slot
-    static FlashIAPBlockDevice flashBD(MCUBOOT_PRIMARY_SLOT_START_ADDR + MCUBOOT_SLOT_SIZE, MCUBOOT_SLOT_SIZE);
+    // Use FlashIAP for the secondary BD.
+    static FlashIAPBlockDevice flashBD(MBED_CONF_APP_SECONDARY_SLOT_FLASH_START_ADDR, MCUBOOT_SLOT_SIZE);
     return &flashBD;
 }
 
@@ -33,7 +33,7 @@ mbed::BlockDevice* get_secondary_bd(void) {
     // Otherwise it will return the flash IAP block device.
     mbed::BlockDevice* default_bd = mbed::BlockDevice::get_default_instance();
 
-    // If this assert fails, there is no block def
+    // If this assert fails, there is no default block device defined for your board.
     MBED_ASSERT(default_bd != nullptr);
 
     // mcuboot assumes that the read size of the secondary block device is the same as the read size