init code and cleanup

Author: snkYmkrct

ports/stm/boards/STM32H750_nofs.ld renamed to ports/stm/boards/STM32H750.ld

@@ -1,5 +1,5 @@
 /*
-    GNU linker script for STM32H750 no filesystem
+    GNU linker script for STM32H750
 */
 
 /* Entry Point */
@@ -12,7 +12,7 @@ MEMORY
 {
     FLASH (rx)          : ORIGIN = 0x90000000, LENGTH = 8M    /* 8M */
     FLASH_ISR (rx)      : ORIGIN = 0x90000000, LENGTH = 4K    /* sector 0 */
-    FLASH_FIRMWARE (rx) : ORIGIN = 0x90001000, LENGTH = 8M-4K   
+    FLASH_FIRMWARE (rx) : ORIGIN = 0x90001000, LENGTH = 8M-4K
     DTCM (xrw)          : ORIGIN = 0x20000000, LENGTH = 128K
     RAM (xrw)           : ORIGIN = 0x24000000, LENGTH = 512K    /* AXI SRAM */
     SRAM_D2 (xrw)       : ORIGIN = 0x30000000, LENGTH = 288K    /* AHB1 SRAM */

ports/stm/boards/STM32H750_fs.ld

@@ -134,6 +134,16 @@ SECTIONS
     } > DTCM
     _ld_stack_top = ORIGIN(DTCM) + LENGTH(DTCM);
 
+    .ARM.extab :
+    {
+        *(.ARM.extab* .gnu.linkonce.armextab.*)
+    } >FLASH_FIRMWARE
+    .ARM :
+    {
+        __exidx_start = .;
+        *(.ARM.exidx*)
+        __exidx_end = .;
+    } >FLASH_FIRMWARE
 
     .ARM.attributes 0 : { *(.ARM.attributes) }
 }

ports/stm/boards/common_tcm.ld

@@ -12,4 +12,4 @@ MCU_VARIANT = STM32H750xx
 MCU_PACKAGE = UFBGA176
 
 LD_COMMON = boards/common_tcm.ld
-LD_FILE = boards/STM32H750_nofs.ld
+LD_FILE = boards/STM32H750.ld

ports/stm/boards/daisy_seed_with_sdram/mpconfigboard.mk

@@ -1,6 +1,6 @@
 #include "shared-bindings/board/__init__.h"
 
-STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
-{MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_PC07)},
+static const mp_rom_map_elem_t board_module_globals_table[] = {
+    {MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_PC07)},
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

ports/stm/boards/daisy_seed_with_sdram/pins.c

@@ -29,7 +29,7 @@
 #include "common-hal/microcontroller/Pin.h"
 #include "py/obj.h"
 
-STATIC const mp_rom_map_elem_t mcu_pin_globals_table[] = {
+static const mp_rom_map_elem_t mcu_pin_globals_table[] = {
 // Row A
     { MP_ROM_QSTR(MP_QSTR_PE03), MP_ROM_PTR(&pin_PE03) },
     { MP_ROM_QSTR(MP_QSTR_PE02), MP_ROM_PTR(&pin_PE02) },

ports/stm/packages/UFBGA176.c

@@ -134,8 +134,14 @@ __attribute__((used, naked)) void Reset_Handler(void) {
     for (uint32_t i = 0; i < ((size_t)&_ld_d1_ram_bss_size) / 4; i++) {
         (&_ld_d1_ram_bss_start)[i] = 0;
     }
-
+    #ifdef STM32H750xx
+    __DMB(); /* ARM says to use a DMB instruction before relocating VTOR */
+    SCB->VTOR = 0x90000000u; /* We relocate vector table to the QSPI sector 1 */
+    __DSB(); /* ARM says to use a DSB instruction just after relocating VTOR */
+    /* SystemInit call is not necessary, initializations are done in the H750 special bootloader */
+    #else
     SystemInit();
+    #endif
     __enable_irq();
     main();
 }