From b1154a4a42e154bb4293cd0356525969f1afa4ef Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Sun, 14 Jun 2015 08:48:25 -0600
Subject: [PATCH] SAML21: Add DMA descriptor management logic

---
 configs/saml21-xplained/scripts/flash.ld | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/configs/saml21-xplained/scripts/flash.ld b/configs/saml21-xplained/scripts/flash.ld
index 51bda76bb3..f97540fff4 100755
--- a/configs/saml21-xplained/scripts/flash.ld
+++ b/configs/saml21-xplained/scripts/flash.ld
@@ -34,13 +34,15 @@
  ****************************************************************************/
 
 /* The ATSAML21J18A has 256KB of FLASH beginning at address 0x0000:0000 and
- * 32KB of SRAM beginning at address 0x2000:0000
+ * 32KB of SRAM beginning at address 0x2000:0000.  There is also 8KB low-
+ * power SRAM at 0x30000000 that may be used by the DMAC.
  */
 
 MEMORY
 {
     flash (rx)  : ORIGIN = 0x00000000, LENGTH = 256K
     sram  (rwx) : ORIGIN = 0x20000000, LENGTH = 32K
+    lpram (rw)  : ORIGIN = 0x30000000, LENGTH = 8K
 }
 
 OUTPUT_ARCH(arm)
@@ -107,6 +109,10 @@ SECTIONS
 		_ebss = ABSOLUTE(.);
 	} > sram
 
+	.lpram : {
+		*(.lpram)
+	} > lpram
+
 	/* Stabs debugging sections. */
 	.stab 0 : { *(.stab) }
 	.stabstr 0 : { *(.stabstr) }