shallow zip-file copy from codec2 e9d726bf20

1 files changed, 116 insertions, 0 deletions

diff --git a/stm32/stm32_ram.ld b/stm32/stm32_ram.ld
new file mode 100644
index 0000000..2cd9bd9
--- /dev/null
+++ b/stm32/stm32_ram.ld
@@ -0,0 +1,116 @@
+ENTRY(Reset_Handler)
+
+/* Highest address of the user mode stack */
+_estack = 0x20020000;    /* end of 128K RAM on AHB bus*/
+
+/* Generate a link error if heap and stack don't fit into RAM */
+_Min_Heap_Size = 0;      /* required amount of heap  */
+_Min_Stack_Size = 0x400; /* required amount of stack */
+
+/* Specify the memory areas */
+MEMORY
+{
+  FLASH (rx)      : ORIGIN = 0x08000000, LENGTH = 1024K
+  RAM (rwx)       : ORIGIN = 0x20000000, LENGTH = 128K
+  CCM (rwx)       : ORIGIN = 0x10000000, LENGTH = 64K
+}
+
+SECTIONS
+{
+  .isr_vector :
+  {
+    . = ALIGN(4);
+    KEEP(*(.isr_vector))
+    . = ALIGN(4);
+  } >RAM
+
+  .text :
+  {
+    . = ALIGN(4);
+    *(.text)           /* .text sections (code) */
+    *(.text*)          /* .text* sections (code) */
+    *(.rodata)         /* .rodata sections (constants, strings, etc.) */
+    *(.rodata*)        /* .rodata* sections (constants, strings, etc.) */
+    *(.glue_7)         /* glue arm to thumb code */
+    *(.glue_7t)        /* glue thumb to arm code */
+	*(.eh_frame)
+
+    KEEP (*(.init))
+    KEEP (*(.fini))
+
+    . = ALIGN(4);
+    _etext = .;        /* define a global symbols at end of code */
+    _exit = .;
+  } >RAM
+
+
+   .ARM.extab   : { *(.ARM.extab* .gnu.linkonce.armextab.*) } >RAM
+    .ARM : {
+    __exidx_start = .;
+      *(.ARM.exidx*)
+      __exidx_end = .;
+    } >RAM
+
+  .preinit_array     :
+  {
+    PROVIDE_HIDDEN (__preinit_array_start = .);
+    KEEP (*(.preinit_array*))
+    PROVIDE_HIDDEN (__preinit_array_end = .);
+  } >RAM
+  .init_array :
+  {
+    PROVIDE_HIDDEN (__init_array_start = .);
+    KEEP (*(SORT(.init_array.*)))
+    KEEP (*(.init_array*))
+    PROVIDE_HIDDEN (__init_array_end = .);
+  } >RAM
+  .fini_array :
+  {
+    PROVIDE_HIDDEN (__fini_array_start = .);
+    KEEP (*(.fini_array*))
+    KEEP (*(SORT(.fini_array.*)))
+    PROVIDE_HIDDEN (__fini_array_end = .);
+  } >RAM
+
+  /* used by the startup to initialize data */
+  _sidata = .;
+
+  /* Initialized data sections goes into RAM, load LMA copy after code */
+  .data : AT ( _sidata )
+  {
+    . = ALIGN(4);
+    _sdata = .;        /* create a global symbol at data start */
+    *(.data)           /* .data sections */
+    *(.data*)          /* .data* sections */
+
+    . = ALIGN(4);
+    _edata = .;        /* define a global symbol at data end */
+  } >RAM
+
+  /* Uninitialized data section */
+  . = ALIGN(4);
+  .bss :
+  {
+    /* This is used by the startup in order to initialize the .bss section */
+    _sbss = .;         /* define a global symbol at bss start */
+    __bss_start__ = _sbss;
+    *(.bss)
+    *(.bss*)
+    *(COMMON)
+
+    . = ALIGN(4);
+    _ebss = .;         /* define a global symbol at bss end */
+    __bss_end__ = _ebss;
+  } >RAM
+
+  /* User_heap_stack section, used to check that there is enough RAM left */
+  ._user_heap_stack :
+  {
+    . = ALIGN(4);
+    PROVIDE ( end = . );
+    PROVIDE ( _end = . );
+    . = . + _Min_Heap_Size;
+    . = . + _Min_Stack_Size;
+    . = ALIGN(4);
+  } >RAM
+}