linker: rename DT_REGION_FROM_NODE_STATUS_OKAY

The main motivation is to avoid polluting the all-caps "DT_"
namespace, which within zephyr belongs to devicetree.h.

Signed-off-by: Martí Bolívar <[email protected]>

Author: mbolivar-nordic

include/arch/arm/aarch32/cortex_m/scripts/linker.ld

@@ -88,21 +88,21 @@ MEMORY
     FLASH                 (rx) : ORIGIN = ROM_ADDR, LENGTH = ROM_SIZE
     SRAM                  (wx) : ORIGIN = RAM_ADDR, LENGTH = RAM_SIZE
     /* TI CCFG Registers */
-    DT_REGION_FROM_NODE_STATUS_OKAY(FLASH_CCFG, rwx, DT_NODELABEL(ti_ccfg_partition))
+    LINKER_DT_REGION_FROM_NODE(FLASH_CCFG, rwx, DT_NODELABEL(ti_ccfg_partition))
     /* Data & Instruction Tightly Coupled Memory */
-    DT_REGION_FROM_NODE_STATUS_OKAY(ITCM, rw, DT_CHOSEN(zephyr_itcm))
-    DT_REGION_FROM_NODE_STATUS_OKAY(DTCM, rw, DT_CHOSEN(zephyr_dtcm))
+    LINKER_DT_REGION_FROM_NODE(ITCM, rw, DT_CHOSEN(zephyr_itcm))
+    LINKER_DT_REGION_FROM_NODE(DTCM, rw, DT_CHOSEN(zephyr_dtcm))
     /* STM32 Core Coupled Memory */
-    DT_REGION_FROM_NODE_STATUS_OKAY(CCM, rw, DT_CHOSEN(zephyr_ccm))
+    LINKER_DT_REGION_FROM_NODE(CCM, rw, DT_CHOSEN(zephyr_ccm))
     /* STM32WB IPC RAM */
-    DT_REGION_FROM_NODE_STATUS_OKAY(SRAM1, rw, DT_NODELABEL(sram1))
-    DT_REGION_FROM_NODE_STATUS_OKAY(SRAM2, rw, DT_NODELABEL(sram2))
+    LINKER_DT_REGION_FROM_NODE(SRAM1, rw, DT_NODELABEL(sram1))
+    LINKER_DT_REGION_FROM_NODE(SRAM2, rw, DT_NODELABEL(sram2))
     /* STM32 alternate RAM configurations */
-    DT_REGION_FROM_NODE_STATUS_OKAY(SRAM3, rw, DT_NODELABEL(sram3))
-    DT_REGION_FROM_NODE_STATUS_OKAY(SRAM4, rw, DT_NODELABEL(sram4))
-    DT_REGION_FROM_NODE_STATUS_OKAY(SDRAM1, rw, DT_NODELABEL(sdram1))
-    DT_REGION_FROM_NODE_STATUS_OKAY(SDRAM2, rw, DT_NODELABEL(sdram2))
-    DT_REGION_FROM_NODE_STATUS_OKAY(BACKUP_SRAM, rw, DT_NODELABEL(backup_sram))
+    LINKER_DT_REGION_FROM_NODE(SRAM3, rw, DT_NODELABEL(sram3))
+    LINKER_DT_REGION_FROM_NODE(SRAM4, rw, DT_NODELABEL(sram4))
+    LINKER_DT_REGION_FROM_NODE(SDRAM1, rw, DT_NODELABEL(sdram1))
+    LINKER_DT_REGION_FROM_NODE(SDRAM2, rw, DT_NODELABEL(sdram2))
+    LINKER_DT_REGION_FROM_NODE(BACKUP_SRAM, rw, DT_NODELABEL(backup_sram))
     /* Used by and documented in include/linker/intlist.ld */
     IDT_LIST  (wx)      : ORIGIN = (RAM_ADDR + RAM_SIZE), LENGTH = 2K
     }

include/linker/devicetree_regions.h

@@ -15,12 +15,17 @@
 /**
  * @brief Generate a linker memory region from a devicetree node
  *
+ * If @p node_id refers to a node with status "okay", then this declares
+ * a linker memory region named @p name with attributes from @p attr.
+ *
+ * Otherwise, it doesn't expand to anything.
+ *
  * @param name name of the generated memory region
  * @param attr region attributes to use (rx, rw, ...)
- * @param node devicetree node with a \<reg\> property defining region location
- *             and size.
+ * @param node_id devicetree node identifier with a \<reg\> property
+ *                defining region location and size.
  */
-#define DT_REGION_FROM_NODE_STATUS_OKAY(name, attr, node) \
-	COND_CODE_1(DT_NODE_HAS_STATUS(node, okay),	  \
-		    (_REGION_DECLARE(name, attr, node)),  \
+#define LINKER_DT_REGION_FROM_NODE(name, attr, node_id)		\
+	COND_CODE_1(DT_NODE_HAS_STATUS(node_id, okay),		\
+		    (_REGION_DECLARE(name, attr, node_id)),	\
 		    ())