- add linker scripts for SAM7S128

- use S128 linker script if we build DFU for PCD


git-svn-id: https://svn.openpcd.org:2342/trunk@204 6dc7ffe9-61d6-0310-9af1-9938baff3ed1

2 files changed, 112 insertions, 1 deletions

diff --git a/firmware/link/AT91SAM7S128-ROM-sam7dfu-dfu.ld b/firmware/link/AT91SAM7S128-ROM-sam7dfu-dfu.ld
new file mode 100644
index 0000000..23c981b
--- /dev/null
+++ b/firmware/link/AT91SAM7S128-ROM-sam7dfu-dfu.ld
@@ -0,0 +1,110 @@
+/* Memory Definitions */
+
+MEMORY
+{
+  FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00020000
+  DATA (rw)  : ORIGIN = 0x00200000, LENGTH = 0x00008000
+  STACK (rw) : ORIGIN = 0x00208000, LENGTH = 0x00000000
+}
+
+
+/* Section Definitions */
+
+SECTIONS
+{
+	. = 0x00000000;
+	/* first section is .text which is used for code */
+	.text 0x00000000: AT ( 0x00000000 ) { 
+		* (.reset)
+		* (.text)
+		* (.rodata*)
+		/* * (.dfu.functab) */ /* for debugging */
+  		. = ALIGN(4);
+  	} >FLASH
+
+  	_etext = . ;
+	PROVIDE (etext = .);
+
+	.data.shared (0x00200020): AT (LOADADDR(.text) + SIZEOF(.text)) {
+		* (.data.shared)
+		. = ALIGN(4);
+	} >DATA
+
+	/* 0x00200000 ... */
+	.data (0x00200000 + SIZEOF(.text)): AT ( LOADADDR(.text) + SIZEOF(.text) + SIZEOF(.data.shared)) {
+  		_data = . ;
+		* (.vectram)
+  		* (.data)
+  		. = ALIGN(4);
+  	} >DATA
+
+  	_edata = . ;
+	PROVIDE (edata = .);
+	
+	/* dfu.functab addresses are valid as long as DFU is in flash, i.e. only while
+	 * application calls those functions.  Once executing in DFU mode, we are
+	 * re-located to ram */
+	.dfu.functab 0x00000fd0: AT ( ADDR(.dfu.functab) - ADDR(.text) ) {
+  		*(.dfu.functab)
+  		. = ALIGN(4096);
+  	} >FLASH
+
+
+	/* .bss section which is used for uninitialized data */
+	.bss : {
+		__bss_start = . ;
+		__bss_start__ = . ;
+		*(.bss)
+		*(COMMON)
+	} >DATA
+
+	. = ALIGN(4);
+	__bss_end__ = . ;
+	__bss_end__ = . ;
+
+	PROVIDE (main = .);
+
+	_end = . ;
+
+	. = ALIGN(4);
+	.int_data : { 
+		*(.internal_ram_top) 
+   	} >STACK 
+
+	PROVIDE (end = .);
+
+  /* Stabs debugging sections.  */
+  .stab          0 : { *(.stab) }
+  .stabstr       0 : { *(.stabstr) }
+  .stab.excl     0 : { *(.stab.excl) }
+  .stab.exclstr  0 : { *(.stab.exclstr) }
+  .stab.index    0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .comment       0 : { *(.comment) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+
+}
diff --git a/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld b/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld
index 03cd6e0..b81d44c 100644
--- a/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld
+++ b/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld
@@ -17,7 +17,8 @@ SECTIONS
 	.text 0x00000000: AT ( 0x00000000 ) { 
 		* (.reset)
 		* (.text)
-		* (.rodata)
+		* (.rodata*)
+		/* * (.dfu.functab) */ /* for debugging */
   		. = ALIGN(4);
   	} >FLASH