Merge pull request #950 from pennam/pico-rand-fix

RP2040: fix OTA and binary size computation

Author: pennam

mbed-os-to-arduino

@@ -227,18 +227,6 @@ generate_flags () {
 			sed -i 's/LENGTH = 0x200000/LENGTH = CM4_BINARY_END - CM4_BINARY_START/g' "$ARDUINOVARIANT"/linker_script.ld
 			sed -i 's/LENGTH = 0x1c0000/LENGTH = CM4_BINARY_START - 0x8040000/g' "$ARDUINOVARIANT"/linker_script.ld
 		fi
-		if [[ $ARDUINOVARIANT == *NANO_RP2040* ]]; then
-			set +e
-			HAS_2NDSTAGE_SECTION=`grep second_stage_ota "$ARDUINOVARIANT"/linker_script.ld`
-			set -e
-			if [ x"$HAS_2NDSTAGE_SECTION" == x ]; then
-				echo "Adding second stage bootloader section to Nano RP2040 Connect"
-				SECOND_STAGE_SECTION=".second_stage_ota : {\n \
-        KEEP (*(.second_stage_ota))\n \
-    } > FLASH"
-				sed -i "s?.flash_begin?${SECOND_STAGE_SECTION}\n    .flash_begin?g" $ARDUINOVARIANT/linker_script.ld
-			fi
-		fi
 	done
 	echo " done."
 }

mbed-os-to-arduino-macos

@@ -253,18 +253,6 @@ generate_flags () {
 			gsed -i 's/LENGTH = 0x200000/LENGTH = CM4_BINARY_END - CM4_BINARY_START/g' "$ARDUINOVARIANT"/linker_script.ld
 			gsed -i 's/LENGTH = 0x1c0000/LENGTH = CM4_BINARY_START - 0x8040000/g' "$ARDUINOVARIANT"/linker_script.ld
 		fi
-		if [[ $ARDUINOVARIANT == *NANO_RP2040* ]]; then
-			set +e
-			HAS_2NDSTAGE_SECTION=`grep second_stage_ota "$ARDUINOVARIANT"/linker_script.ld`
-			set -e
-			if [ x"$HAS_2NDSTAGE_SECTION" == x ]; then
-				echo "Adding second stage bootloader section to Nano RP2040 Connect"
-				SECOND_STAGE_SECTION=".second_stage_ota : {\n \
-        KEEP (*(.second_stage_ota))\n \
-    } > FLASH"
-				gsed -i "s?.flash_begin?${SECOND_STAGE_SECTION}\n    .flash_begin?g" $ARDUINOVARIANT/linker_script.ld
-			fi
-		fi
 	done
 	echo " done."
 }

patches/0235-RP2040-add-second_stage_ota-section-to-linker-script.patch

@@ -0,0 +1,28 @@
+From 9819fef4bdb417e3ff9aee08266264b6ec23e075 Mon Sep 17 00:00:00 2001
+From: pennam <m.pennasilico@arduino.cc>
+Date: Wed, 11 Sep 2024 12:24:01 +0200
+Subject: [PATCH 235/236] RP2040: add second_stage_ota section to linker script
+
+  - This was previously done inside mbed-os-to-arduino script
+---
+ .../TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld         | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld b/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld
+index ec8bac7e40..8295f3269d 100644
+--- a/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld
++++ b/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld
+@@ -54,6 +54,10 @@ SECTIONS
+         __flash_binary_start = .;
+     } > FLASH
+ 
++    .second_stage_ota : {
++         KEEP (*(.second_stage_ota))
++     } > FLASH
++
+     .boot2 : {
+         __boot2_start__ = .;
+         KEEP (*(.boot2))
+-- 
+2.45.2
+

patches/0236-RP2040-add-simbols-to-linker-script-to-compute-.unin.patch

@@ -0,0 +1,27 @@
+From 35b0d95199cb5b9cda593ce4b4029c4306906ccd Mon Sep 17 00:00:00 2001
+From: pennam <m.pennasilico@arduino.cc>
+Date: Wed, 11 Sep 2024 12:27:03 +0200
+Subject: [PATCH 236/236] RP2040: add simbols to linker script to compute
+ .uninitialized_data section size
+
+---
+ .../TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld           | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld b/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld
+index 8295f3269d..b748bab5fa 100644
+--- a/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld
++++ b/targets/TARGET_RASPBERRYPI/TARGET_RP2040/TOOLCHAIN_GCC_ARM/memmap_default.ld
+@@ -183,7 +183,9 @@ SECTIONS
+ 
+     .uninitialized_data (COPY): {
+         . = ALIGN(4);
++        __uninitialized_data_start__ = .;
+         *(.uninitialized_data*)
++        __uninitialized_data_end__ = .;
+     } > RAM
+ 
+     /* Start and end symbols must be word-aligned */
+-- 
+2.45.2
+

variants/NANO_RP2040_CONNECT/conf/mbed_app.json

@@ -2,7 +2,7 @@
   "target_overrides": {
     "*": {
       "target.printf_lib": "std",
-      "target.macros_add": [ "MBEDTLS_ENTROPY_NV_SEED" ],
+      "target.macros_add": [ "MBEDTLS_ENTROPY_NV_SEED", "UNINITIALIZED_DATA_SECTION=1" ],
       "platform.stdio-buffered-serial": false,
       "platform.stdio-baud-rate": 115200,
       "platform.default-serial-baud-rate": 115200,