Merge pull request #2139 from jamesmunns/patch-1

Update RP2040 memory.x

1 files changed, 13 insertions, 1 deletions

diff --git a/examples/boot/application/rp/memory.x b/examples/boot/application/rp/memory.x
index c19473114..2f8434b8a 100644
--- a/examples/boot/application/rp/memory.x
+++ b/examples/boot/application/rp/memory.x
@@ -5,7 +5,19 @@ MEMORY
   BOOTLOADER_STATE                  : ORIGIN = 0x10006000, LENGTH = 4K
   FLASH                             : ORIGIN = 0x10007000, LENGTH = 512K
   DFU                               : ORIGIN = 0x10087000, LENGTH = 516K
-  RAM                               : ORIGIN = 0x20000000, LENGTH = 256K
+
+  /* Pick one of the two options for RAM layout     */
+
+  /* OPTION A: Use all RAM banks as one big block   */
+  /* Reasonable, unless you are doing something     */
+  /* really particular with DMA or other concurrent */
+  /* access that would benefit from striping        */
+  RAM   : ORIGIN = 0x20000000, LENGTH = 264K
+
+  /* OPTION B: Keep the unstriped sections separate */
+  /* RAM: ORIGIN = 0x20000000, LENGTH = 256K        */
+  /* SCRATCH_A: ORIGIN = 0x20040000, LENGTH = 4K    */
+  /* SCRATCH_B: ORIGIN = 0x20041000, LENGTH = 4K    */
 }
 
 __bootloader_state_start = ORIGIN(BOOTLOADER_STATE) - ORIGIN(BOOT2);