arm: Convert DT_DTCM_* to new devicetree.h macros

Convert various DT_DTCM_* macros to use DT_CHOSEN(zephyr_dtcm) and
associated macros from devicetree.h.

Signed-off-by: Kumar Gala <kumar.gala@linaro.org>

drivers/ethernet/eth_stm32_hal.c

@@ -27,12 +27,12 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME);
 #include "eth_stm32_hal_priv.h"
 
 #if defined(CONFIG_ETH_STM32_HAL_USE_DTCM_FOR_DMA_BUFFER) && \
-    !defined(DT_DTCM_BASE_ADDRESS)
+	    !DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
-#error DTCM for DMA buffer is activated but DT_DTCM_BASE_ADDRESS is not present
+#error DTCM for DMA buffer is activated but zephyr,dtcm is not present in dts
 #endif
 
 #if defined(CONFIG_ETH_STM32_HAL_USE_DTCM_FOR_DMA_BUFFER) && \
-    defined(DT_DTCM_BASE_ADDRESS)
+	    DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
 static ETH_DMADescTypeDef dma_rx_desc_tab[ETH_RXBUFNB] __dtcm_noinit_section;
 static ETH_DMADescTypeDef dma_tx_desc_tab[ETH_TXBUFNB] __dtcm_noinit_section;
 static u8_t dma_rx_buffer[ETH_RXBUFNB][ETH_RX_BUF_SIZE] __dtcm_noinit_section;

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

@@ -98,8 +98,8 @@ MEMORY
 #ifdef DT_CCM_BASE_ADDRESS
     CCM                   (rw) : ORIGIN = DT_CCM_BASE_ADDRESS, LENGTH = DT_CCM_SIZE * 1K
 #endif
-#ifdef DT_DTCM_BASE_ADDRESS
+#if DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
-    DTCM                  (rw) : ORIGIN = DT_DTCM_BASE_ADDRESS, LENGTH = DT_DTCM_SIZE * 1K
+    DTCM                  (rw) : ORIGIN = DT_REG_ADDR(DT_CHOSEN(zephyr_dtcm)), LENGTH = DT_REG_SIZE(DT_CHOSEN(zephyr_dtcm))
 #endif
     SRAM                  (wx) : ORIGIN = RAM_ADDR, LENGTH = RAM_SIZE
 #ifdef CONFIG_BT_STM32_IPM
@@ -388,7 +388,7 @@ SECTIONS
 
     GROUP_END(RAMABLE_REGION)
 
-#ifdef DT_DTCM_BASE_ADDRESS
+#if DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
 GROUP_START(DTCM)
 
 	SECTION_PROLOGUE(_DTCM_BSS_SECTION_NAME, (NOLOAD),SUBALIGN(4))
@@ -423,7 +423,7 @@ GROUP_START(DTCM)
 	__dtcm_data_rom_start = LOADADDR(_DTCM_DATA_SECTION_NAME);
 
 GROUP_END(DTCM)
-#endif /* DT_DTCM_BASE_ADDRESS */
+#endif
 #ifdef CONFIG_CUSTOM_SECTIONS_LD
 /* Located in project source directory */
 #include <custom-sections.ld>

include/linker/linker-defs.h

@@ -24,6 +24,16 @@
 #include <sys/util.h>
 #include <offsets.h>
 
+/* We need to dummy out DT_HAS_NODE when building the unittests since including
+ * devicetree.h would require generating dummy header files to match what the
+ * generate creates, so its easier to just dummy out DT_HAS_NODE.
+ */
+#ifdef ZTEST_UNITTEST
+#define DT_HAS_NODE(x) 0
+#else
+#include <devicetree.h>
+#endif
+
 #ifdef _LINKER
 
 
@@ -217,7 +227,7 @@ extern char __ccm_noinit_end[];
 extern char __ccm_end[];
 #endif /* DT_CCM_BASE_ADDRESS */
 
-#ifdef DT_DTCM_BASE_ADDRESS
+#if DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
 extern char __dtcm_data_start[];
 extern char __dtcm_data_end[];
 extern char __dtcm_bss_start[];
@@ -227,7 +237,7 @@ extern char __dtcm_noinit_end[];
 extern char __dtcm_data_rom_start[];
 extern char __dtcm_start[];
 extern char __dtcm_end[];
-#endif /* DT_DTCM_BASE_ADDRESS */
+#endif
 
 /* Used by the Security Attribution Unit to configure the
  * Non-Secure Callable region.

kernel/init.c

@@ -110,7 +110,7 @@ void z_bss_zero(void)
 	(void)memset(&__ccm_bss_start, 0,
 		     ((u32_t) &__ccm_bss_end - (u32_t) &__ccm_bss_start));
 #endif
-#ifdef DT_DTCM_BASE_ADDRESS
+#if DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
 	(void)memset(&__dtcm_bss_start, 0,
 		     ((u32_t) &__dtcm_bss_end - (u32_t) &__dtcm_bss_start));
 #endif
@@ -151,7 +151,7 @@ void z_data_copy(void)
 	(void)memcpy(&__ccm_data_start, &__ccm_data_rom_start,
 		 __ccm_data_end - __ccm_data_start);
 #endif
-#ifdef DT_DTCM_BASE_ADDRESS
+#if DT_HAS_NODE(DT_CHOSEN(zephyr_dtcm))
 	(void)memcpy(&__dtcm_data_start, &__dtcm_data_rom_start,
 		 __dtcm_data_end - __dtcm_data_start);
 #endif