Add files via upload

circuit_python_seeduino_xaio_firmware_common.ld

@@ -0,0 +1,110 @@
+/* RAM_SIZE = 0x00008000 */
+/* FLASH_SIZE = 0x00040000 */
+/* BOOTLOADER_SIZE = (8 * 1024) */
+/* BOOTLOADER_START_ADDR = (0x00000000) */
+/* CIRCUITPY_DEFAULT_STACK_SIZE = 3584 */
+/* CIRCUITPY_FIRMWARE_START_ADDR = ((0x00000000) + (8 * 1024)) */
+/* CIRCUITPY_FIRMWARE_SIZE = ((((0x00040000 - (256)) - (0)) - (64 * 1024)) - ((0x00000000) + (8 * 1024))) */
+/* CIRCUITPY_INTERNAL_CONFIG_START_ADDR = ((0x00040000 - (256)) - (0)) */
+/* CIRCUITPY_INTERNAL_CONFIG_SIZE = (0) */
+/* CIRCUITPY_INTERNAL_NVM_START_ADDR = (0x00040000 - (256)) */
+/* CIRCUITPY_INTERNAL_NVM_SIZE = (256) */
+/* CIRCUITPY_INTERNAL_FLASH_FILESYSTEM_START_ADDR = (((0x00040000 - (256)) - (0)) - (64 * 1024)) */
+/* CIRCUITPY_INTERNAL_FLASH_FILESYSTEM_SIZE = (64 * 1024) */
+
+/* Template for SAMD21/SAMD51 linking. dollar-sign-curly-bracket items are replaced with strings. */
+
+/* Specify the memory areas */
+MEMORY
+{
+    FLASH_BOOTLOADER (rx): ORIGIN = (0x00000000), LENGTH = (8 * 1024)
+
+    FLASH_FIRMWARE (rx) : ORIGIN = ((0x00000000) + (8 * 1024)), LENGTH = ((((0x00040000 - (256)) - (0)) - (64 * 1024)) - ((0x00000000) + (8 * 1024)))
+    FLASH_FILESYSTEM (r) : ORIGIN = (((0x00040000 - (256)) - (0)) - (64 * 1024)), LENGTH = (64 * 1024)
+    FLASH_CONFIG (r) : ORIGIN = ((0x00040000 - (256)) - (0)), LENGTH = (0)
+    FLASH_NVM (r) : ORIGIN = (0x00040000 - (256)), LENGTH = (256)
+
+    RAM (xrw)  : ORIGIN = 0x20000000, LENGTH = 0x00008000
+}
+
+/* top end of the stack */
+/* stack must be double-word (8 byte) aligned */
+_estack = ORIGIN(RAM) + LENGTH(RAM) - 8;
+_bootloader_dbl_tap = ORIGIN(RAM) + LENGTH(RAM) - 4;
+
+/* define output sections */
+SECTIONS
+{
+    /* The program code and other data goes into FLASH */
+    .text :
+    {
+        . = ALIGN(4);
+        _sfixed = .;
+        KEEP(*(.vectors)) /* isr vector table */
+        *(.text)           /* .text sections (code) */
+        *(.text*)          /* .text* sections (code) */
+        *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+        *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+
+        . = ALIGN(4);
+    } >FLASH_FIRMWARE
+
+    .ARM.exidx :
+    {
+        *(.ARM.exidx*)
+        *(.gnu.linkonce.armexidx.*)
+        _etext = .;        /* define a global symbol at end of code */
+        _sidata = .;       /* start of .data section */
+    } >FLASH_FIRMWARE
+
+    /* Data accessed by the CAN peripheral must be in the first 64kB RAM */
+    /* place it at the very start of RAM, before the .data section */
+    /* it is zeroed by reset_port */
+    .canram (NOLOAD) :
+    {
+        . = ALIGN(4);
+        *(.canram)
+    } > RAM
+
+    /* This is the initialized data section
+    The program executes knowing that the data is in the RAM
+    but the loader puts the initial values in the FLASH_FIRMWARE (inidata).
+    It is one task of the startup to copy the initial values from FLASH_FIRMWARE to RAM. */
+    .data : AT ( _sidata )
+    {
+        . = ALIGN(4);
+        _srelocate = .;        /* create a global symbol at data start; used by startup code in order to initialize the .data section in RAM */
+        *(.ramfunc)
+        *(.ramfunc*)
+        *(.data)           /* .data sections */
+        *(.data*)          /* .data* sections */
+
+        . = ALIGN(4);
+        _erelocate = .;        /* define a global symbol at data end; used by startup code in order to initialize the .data section in RAM */
+    } >RAM
+
+    /* Uninitialized data section */
+    .bss (NOLOAD) :
+    {
+        . = ALIGN(4);
+        _sbss = .;
+        _szero = .;         /* define a global symbol at bss start; used by startup code */
+        *(.bss)
+        *(.bss*)
+        *(COMMON)
+
+        . = ALIGN(4);
+        _ezero = .;         /* define a global symbol at bss end; used by startup code */
+        _ebss = .;
+    } >RAM
+
+    /* this just checks there is enough RAM for the requested stack. */
+    .stack :
+    {
+        . = ALIGN(4);
+        . = . + 3584;
+        . = ALIGN(4);
+    } >RAM
+
+    .ARM.attributes 0 : { *(.ARM.attributes) }
+}