From 5a8cd9feca7d0d09aee736ff804be4967828aefd Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Sat, 30 Jul 2011 00:37:04 +0200
Subject: add new RUN_FROM_RAM run-mode for direct DFU-to-RAM support

---
 firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld | 94 +++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld

(limited to 'firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld')

diff --git a/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld b/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld
new file mode 100644
index 0000000..674ee00
--- /dev/null
+++ b/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld
@@ -0,0 +1,94 @@
+/* Memory Definitions */
+
+MEMORY
+{
+  /* reserve 16K DFU area on top  of flash */
+  /* FLASH  (rx) : ORIGIN = 0x00104000, LENGTH = (0x00020000 - 0x4000 - 0x400) */
+  /* reserve 1k DFU area on top of RAM */
+  DATA   (rw) : ORIGIN = 0x00200400, LENGTH = (0x00008000 - 0x400)
+  STACK  (rw) : ORIGIN = 0x00208000, LENGTH = 0x00000000
+}
+
+
+/* Section Definitions */
+
+SECTIONS
+{
+	. = 0x00000000;
+	/* first section is .text which is used for code */
+	.text 0x00200400: AT ( 0x00000000 ) { 
+  		src/start/Cstartup_app.o (.text)
+		* (.text)
+		* (.rodata*)
+  		. = ALIGN(4);
+
+  	_etext = . ;
+	PROVIDE (etext = .);
+
+  		_data = . ;
+		* (.fastrun)
+  		* (.data)
+  		. = ALIGN(4);
+  	} >DATA
+
+  	_edata = . ;
+	PROVIDE (edata = .);
+
+	/* .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) }
+
+}
-- 
cgit v1.2.3


From 58d958e60c429bd7a2b2d114a4f7a86a65bdacef Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Sat, 30 Jul 2011 02:56:36 +0200
Subject: DFU: Support re-flashing of DFU via DFU

As we re-locate the entire sam7dfu program into RAM, we don't need
to execute from flash and can thus re-program the DFU partition
via the DFU protocol itself (alternate setting '1').

We also implement downloading executable code into RAM using
alternate setting '2'.  The latter part is not properly executed yet.
---
 firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld')

diff --git a/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld b/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld
index 674ee00..ad02776 100644
--- a/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld
+++ b/firmware/link/AT91SAM7S128-RAM-sam7dfu-app.ld
@@ -5,7 +5,7 @@ MEMORY
   /* reserve 16K DFU area on top  of flash */
   /* FLASH  (rx) : ORIGIN = 0x00104000, LENGTH = (0x00020000 - 0x4000 - 0x400) */
   /* reserve 1k DFU area on top of RAM */
-  DATA   (rw) : ORIGIN = 0x00200400, LENGTH = (0x00008000 - 0x400)
+  DATA   (rw) : ORIGIN = 0x00202000, LENGTH = (0x00008000 - 0x2000)
   STACK  (rw) : ORIGIN = 0x00208000, LENGTH = 0x00000000
 }
 
@@ -16,7 +16,7 @@ SECTIONS
 {
 	. = 0x00000000;
 	/* first section is .text which is used for code */
-	.text 0x00200400: AT ( 0x00000000 ) { 
+	.text 0x00202000: AT ( 0x00000000 ) { 
   		src/start/Cstartup_app.o (.text)
 		* (.text)
 		* (.rodata*)
-- 
cgit v1.2.3