hw/bsp: Update all STMF7 BSPs to use common startup

This removes local startup code and linker scripts

Signed-off-by: Jerzy Kasenberg <jerzy.kasenberg@codecoup.pl>

hw/bsp/nucleo-f746zg/bsp.yml

@@ -22,16 +22,9 @@ bsp.url: https://www.st.com/en/evaluation-tools/nucleo-f746zg.html
 bsp.maker: "STMicroelectronics"
 bsp.arch: cortex_m7
 bsp.compiler: compiler/arm-none-eabi-m7
-bsp.linkerscript:
- - "hw/bsp/nucleo-f746zg/nucleo-f746zg.ld"
- - "@apache-mynewt-core/hw/mcu/stm/stm32f7xx/stm32f746.ld"
-bsp.linkerscript.BOOT_LOADER.OVERWRITE:
- - "hw/bsp/nucleo-f746zg/boot-nucleo-f746zg.ld"
- - "@apache-mynewt-core/hw/mcu/stm/stm32f7xx/stm32f746.ld"
+bsp.linkerscript: autogenerated
 bsp.downloadscript: "hw/bsp/nucleo-f746zg/nucleo-f746zg_download.sh"
 bsp.debugscript: "hw/bsp/nucleo-f746zg/nucleo-f746zg_debug.sh"
-bsp.downloadscript.WINDOWS.OVERWRITE: "hw/bsp/nucleo-f746zg/nucleo-f746zg_download.cmd"
-bsp.debugscript.WINDOWS.OVERWRITE: "hw/bsp/nucleo-f746zg/nucleo-f746zg_debug.cmd"
 
 bsp.flash_map:
  areas:

hw/bsp/nucleo-f746zg/include/bsp/bsp.h

@@ -34,15 +34,15 @@ extern "C" {
 /* More convenient section placement macros. */
 #define bssnz_t sec_bss_nz_core
 
-extern uint8_t _ram_start;
-extern uint8_t _dtcmram_start;
-extern uint8_t _itcmram_start;
-extern uint8_t _ram2_start;
+extern uint8_t _ram_start[];
+extern uint8_t _dtcm_start[];
+extern uint8_t _itcm_start[];
+extern uint8_t _ram2_start[];
 
 #define RAM_SIZE (240 * 1024)
 #define RAM2_SIZE (16 * 1024)
-#define DTCMRAM_SIZE (64 * 1024)
-#define ITCMRAM_SIZE (16 * 1024)
+#define DTCM_SIZE  (64 * 1024)
+#define ITCM_SIZE  (16 * 1024)
 
 /* LED pins */
 #define LED_1 MCU_GPIO_PORTB(0)

hw/bsp/nucleo-f746zg/boot-nucleo-f746zg.ld → hw/bsp/nucleo-f746zg/link/include/mcu_config.ld.h

@@ -17,14 +17,22 @@
  * under the License.
  */
 
-/* Linker script to configure memory regions. */
-MEMORY
-{
- FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 32K
- ITCM (rx) : ORIGIN = 0x00000000, LENGTH = 16K
- DTCM (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
- RAM (rwx) : ORIGIN = 0x20010000, LENGTH = 256K
-}
+/*
+ * Memory regions placed in DTCM
+ * If stack or core data or other section should be place in RAM
+ * <target_name>/link/include/target_config.ld.h should just do:
+ * #undef BSSNZ_RAM
+ * #undef COREBSS_RAM
+ * #undef COREDATA_RAM
+ * #undef STACK_REGION
+ * #undef VECTOR_RELOCATION_RAM DTCM
+ */
+
+#define BSSNZ_RAM DTCM
+#define COREBSS_RAM DTCM
+#define COREDATA_RAM DTCM
+#define STACK_REGION DTCM
+#define VECTOR_RELOCATION_RAM DTCM
+
+#define TEXT_RAM ITCM
 
-/* The bootloader does not contain an image header */
-_imghdr_size = 0x0;

hw/bsp/stm32f7discovery/boot-stm32f7discovery.ld → hw/bsp/nucleo-f746zg/link/include/memory_regions.ld.h

@@ -17,16 +17,22 @@
  * under the License.
  */
 
-/* Linker script for STM32F746 when running the bootloader */
+/* Fragment that goes to MEMORY section */
+#ifndef SECTIONS_REGIONS
 
-/* Linker script to configure memory regions. */
-MEMORY
-{
- FLASH (rx) : ORIGIN = 0x08000000, LENGTH = 32K /* FLASHAXI_BASE */
- ITCM (rx) : ORIGIN = 0x00000000, LENGTH = 16K /* RAMITCM_BASE */
- DTCM (rwx) : ORIGIN = 0x20000000, LENGTH = 64K /* RAMDTCM_BASE */
- RAM (rwx) : ORIGIN = 0x20010000, LENGTH = 256K /* SRAM1_BASE */
-}
+#ifdef STACK_REGION
+ DTCM (rwx) : ORIGIN = 0x20000000, LENGTH = (64K - STACK_SIZE)
+ STACK_RAM (rw) : ORIGIN = 0x20020000 - STACK_SIZE, LENGTH = STACK_SIZE
+#else
+ DTCM (rwx) : ORIGIN = 0x20000000, LENGTH = 64K
+#endif
+ ITCM (rx) : ORIGIN = 0x00000000, LENGTH = 16K
 
-/* The bootloader does not contain an image header */
-_imghdr_size = 0x0;
+#else
+/* Fragment that goes into SECTIONS, can provide definition and sections if needed */
+ _itcm_start = ORIGIN(ITCM);
+ _itcm_end = ORIGIN(ITCM) + LENGTH(ITCM);
+ _dtcm_start = ORIGIN(DTCM);
+ _dtcm_end = ORIGIN(DTCM) + LENGTH(DTCM);
+
+#endif

hw/bsp/nucleo-f746zg/pkg.yml

@@ -35,3 +35,5 @@ pkg.cflags.HARDFLOAT:
 pkg.deps:
  - "@apache-mynewt-core/hw/mcu/stm/stm32f7xx"
  - "@apache-mynewt-core/libc"
+ - "@apache-mynewt-core/hw/scripts"
+ - "@apache-mynewt-core/boot/startup"