samples: code_relocation_nocopy: add stm32f769i_disco board

This board has memory-mapped QSPI flash.

Signed-off-by: Armin Brauns <[email protected]>

Author: arbrauns

samples/application_development/code_relocation_nocopy/README.rst

@@ -10,18 +10,14 @@ using a custom linker script.
 
 Differently from the code relocation sample, this sample is relocating the
 content of the ext_code.c file to a different FLASH section and the code is XIP
-directly from there without the need to copy / relocate the code.
+directly from there without the need to copy / relocate the code. All other code
+(e.g. main(), Zephyr kernel) stays in the internal flash.
 
 nRF5340 DK platform instructions
 ********************************
 
 The nRF5340 DK has a 64 Mb external flash memory supporting Quad SPI. It is
-possible to do XIP from the external flash memory.
-
-The external flash memory is mapped to 0x10000000.
-
-In this sample we relocate some of the code to the external flash memory with
-the remaining Zephyr kernel in the internal flash.
+mapped to 0x10000000.
 
 To build and flash the application (including the external memory part):
 
@@ -31,7 +27,20 @@ To build and flash the application (including the external memory part):
    :goals: build flash
    :compact:
 
-Execution output:
+STM32F769I-Discovery platform instructions
+******************************************
+
+The stm32f769i_disco has 64MB of external flash attached via QSPI. It is mapped
+to 0x90000000.
+
+.. zephyr-app-commands::
+   :zephyr-app: samples/application_development/code_relocation_nocopy
+   :board: stm32f769i_disco
+   :goals: build flash
+   :compact:
+
+Execution output
+****************
 
 .. code-block:: console
 

samples/application_development/code_relocation_nocopy/boards/stm32f769i_disco.conf

@@ -0,0 +1,2 @@
+CONFIG_FLASH=y
+CONFIG_STM32_MEMMAP=y

samples/application_development/code_relocation_nocopy/linker_arm_nocopy.ld

@@ -26,6 +26,13 @@
 #define EXTFLASH_SIZE	DT_PROP_OR(EXTFLASH_NODE, size_in_bytes, \
 				   DT_PROP(EXTFLASH_NODE, size) / 8)
 
+#elif defined(CONFIG_STM32_MEMMAP) && DT_NODE_EXISTS(DT_INST(0, st_stm32_qspi_nor))
+/* On stm32 QSPI, external flash is mapped in XIP region at address given by the reg property. */
+
+#define EXTFLASH_NODE	DT_INST(0, st_stm32_qspi_nor)
+#define EXTFLASH_ADDR	DT_REG_ADDR(DT_INST(0, st_stm32_qspi_nor))
+#define EXTFLASH_SIZE	DT_REG_ADDR_BY_IDX(DT_INST(0, st_stm32_qspi_nor), 1)
+
 #else
 
 /*

samples/application_development/code_relocation_nocopy/sample.yaml

@@ -6,6 +6,7 @@ tests:
     platform_allow:
       - qemu_cortex_m3
       - nrf5340dk/nrf5340/cpuapp
+      - stm32f769i_disco
     integration_platforms:
       - qemu_cortex_m3
     tags: linker