[rtems commit] bsp/mpc55xx: Add .dsram section

[Sebastian Huber]

Module:    rtems
Branch:    master
Commit:    65ab304bd8acf6f42b1b57632db007c83aa23b41
Changeset: http://git.rtems.org/rtems/commit/?id=65ab304bd8acf6f42b1b57632db007c83aa23b41

Author:    Sebastian Huber <sebastian.huber at embedded-brains.de>
Date:      Fri Nov 23 14:47:47 2012 +0100

bsp/mpc55xx: Add .dsram section

---

 c/src/lib/libbsp/powerpc/mpc55xxevb/include/bsp.h  |   10 ++++++++++
 .../mpc55xxevb/startup/linkcmds.mpc5674f_ecu508    |   17 +++++++++++++++--
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/include/bsp.h b/c/src/lib/libbsp/powerpc/mpc55xxevb/include/bsp.h
index 017e105..54e4b54 100644
--- a/c/src/lib/libbsp/powerpc/mpc55xxevb/include/bsp.h
+++ b/c/src/lib/libbsp/powerpc/mpc55xxevb/include/bsp.h
@@ -37,6 +37,8 @@
 #include <rtems/console.h>
 #include <rtems/clockdrv.h>
 
+#include <libcpu/powerpc-utility.h>
+
 #include <bsp/tictac.h>
 #include <bsp/default-initial-extension.h>
 
@@ -77,6 +79,14 @@ void *bsp_idle_thread(uintptr_t arg);
 
 #define BSP_IDLE_TASK_BODY bsp_idle_thread
 
+LINKER_SYMBOL(bsp_section_dsram_begin)
+LINKER_SYMBOL(bsp_section_dsram_end)
+LINKER_SYMBOL(bsp_section_dsram_size)
+LINKER_SYMBOL(bsp_section_dsram_load_begin)
+LINKER_SYMBOL(bsp_section_dsram_load_end)
+
+#define BSP_DSRAM_SECTION __attribute__((section(".bsp_dsram")))
+
 typedef enum {
   MPC55XX_FATAL_FMPLL_LOCK
 } mpc55xx_fatal_code;
diff --git a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/linkcmds.mpc5674f_ecu508 b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/linkcmds.mpc5674f_ecu508
index f38ca47..4693804 100644
--- a/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/linkcmds.mpc5674f_ecu508
+++ b/c/src/lib/libbsp/powerpc/mpc55xxevb/startup/linkcmds.mpc5674f_ecu508
@@ -1,7 +1,9 @@
 MEMORY {
-	RAM : ORIGIN = 0x40000000, LENGTH = 256K - 16k
-	RAM_EXT : ORIGIN = 0x20000000, LENGTH = 512K
+	DSROM : ORIGIN = 0x00020000, LENGTH = 64k
+	RAM : ORIGIN = 0x40000000, LENGTH = 240k
 	NOCACHE : ORIGIN = 0x4003c000, LENGTH = 16k
+	DSRAM : ORIGIN = 0x20000000, LENGTH = 64k
+	RAM_EXT : ORIGIN = 0x20010000, LENGTH = 448k
 	NVRAM : ORIGIN = 0x3ffa0000, LENGTH = 128k
 }
 
@@ -24,4 +26,15 @@ REGION_ALIAS ("REGION_NOCACHE", NOCACHE);
 REGION_ALIAS ("REGION_NOCACHE_LOAD", ROM);
 REGION_ALIAS ("REGION_NVRAM", NVRAM);
 
+SECTIONS {
+	.dsram (NOLOAD) : {
+		bsp_section_dsram_begin = .;
+		*(SORT(.bsp_dsram*))
+		bsp_section_dsram_end = .;
+	} > DSRAM AT > DSROM
+	bsp_section_dsram_size = bsp_section_dsram_end - bsp_section_dsram_begin;
+	bsp_section_dsram_load_begin = LOADADDR (.dsram);
+	bsp_section_dsram_load_end = bsp_section_dsram_load_begin + bsp_section_dsram_size;
+}
+
 INCLUDE linkcmds.mpc55xx