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authorlaforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>2006-09-13 16:02:52 +0000
committerlaforge <laforge@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>2006-09-13 16:02:52 +0000
commita97e460bea62375c9c870fb3e3650fbff20c5ad1 (patch)
tree64c0de524a604015a367aa979c777325765fbfa3 /firmware/link
parent8bd3d51b23e328e91c209dbebe8cfe002b0b0042 (diff)
Completely separate DFU from application program, we now have a real bootloader.
DFU occupies 0x00100000 - 0x00100fff in flash, application starts at 0x00101000. DFU also occupies the first couple of bytes in SRAM, application starts at 0x00200024. In order to produce a samba-flashable image, first build dfu.bin by typing 'make -f Makefule.dfu', succeeded by 'make TARGET=... DEBUG=... BOARD=...' and then concatenating the two files together, e.g. cat dfu.bin main_reqa.bin > flash.bin. Actual flashing via DFU is still not operational, but will be implemented next git-svn-id: https://svn.openpcd.org:2342/trunk@194 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
Diffstat (limited to 'firmware/link')
-rw-r--r--firmware/link/AT91SAM7S256-ROM-sam7dfu-app.ld94
-rw-r--r--firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld109
2 files changed, 203 insertions, 0 deletions
diff --git a/firmware/link/AT91SAM7S256-ROM-sam7dfu-app.ld b/firmware/link/AT91SAM7S256-ROM-sam7dfu-app.ld
new file mode 100644
index 0000000..32bd787
--- /dev/null
+++ b/firmware/link/AT91SAM7S256-ROM-sam7dfu-app.ld
@@ -0,0 +1,94 @@
+/* Memory Definitions */
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = 0x00101000, LENGTH = (0x00040000 - 0x1000)
+ DATA (rw) : ORIGIN = 0x00200024, LENGTH = (0x00010000 - 0x24)
+ STACK (rw) : ORIGIN = 0x00210000, LENGTH = 0x00000000
+}
+
+
+/* Section Definitions */
+
+SECTIONS
+{
+ . = 0x00000000;
+ /* first section is .text which is used for code */
+ .text 0x00101000: AT ( 0x00000000 ) {
+ src/start/Cstartup_app.o (.text)
+ * (.text)
+ * (.rodata*)
+ . = ALIGN(4);
+ } >FLASH
+
+ _etext = . ;
+ PROVIDE (etext = .);
+
+ /* 0x00200000 ... */
+ .data 0x00200024: AT ( ADDR(.text) + SIZEOF(.text) - ADDR(.text) ) {
+ _data = . ;
+ * (.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) }
+
+}
diff --git a/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld b/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld
new file mode 100644
index 0000000..03cd6e0
--- /dev/null
+++ b/firmware/link/AT91SAM7S256-ROM-sam7dfu-dfu.ld
@@ -0,0 +1,109 @@
+/* Memory Definitions */
+
+MEMORY
+{
+ FLASH (rx) : ORIGIN = 0x00000000, LENGTH = 0x00040000
+ DATA (rw) : ORIGIN = 0x00200000, LENGTH = 0x00010000
+ STACK (rw) : ORIGIN = 0x00210000, LENGTH = 0x00000000
+}
+
+
+/* Section Definitions */
+
+SECTIONS
+{
+ . = 0x00000000;
+ /* first section is .text which is used for code */
+ .text 0x00000000: AT ( 0x00000000 ) {
+ * (.reset)
+ * (.text)
+ * (.rodata)
+ . = 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) }
+
+}
personal git repositories of Harald Welte. Your mileage may vary