michaelh/zephyr
1
0
Fork 0
Code Releases Activity

linker: Add dtcm section for Cortex M7 MCUs

Browse source 
This commit adds a DTCM (Device Tightly Coupled Memory) section for
Cortex F7 MCUs. The Address and length is defined in the corresponding
device tree file.

Signed-off-by: Alexander Wachter <alexander.wachter@student.tugraz.at>
This commit is contained in:
Alexander Wachter 2019-07-03 14:19:29 +02:00 • committed by Carles Cufí
commit b4c5f4b32b
7 changed files with 85 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

12
include/linker/linker-defs.h
View file

@ -216,6 +216,18 @@ extern char __ccm_noinit_end[];
extern char __ccm_end[];
#endif /* DT_CCM_BASE_ADDRESS */
#ifdef DT_DTCM_BASE_ADDRESS
extern char __dtcm_data_start[];
extern char __dtcm_data_end[];
extern char __dtcm_bss_start[];
extern char __dtcm_bss_end[];
extern char __dtcm_noinit_start[];
extern char __dtcm_noinit_end[];
extern char __dtcm_data_rom_start[];
extern char __dtcm_start[];
extern char __dtcm_end[];
#endif /* DT_DTCM_BASE_ADDRESS */
/* Used by the Security Attribution Unit to configure the
* Non-Secure Callable region.
*/

3
include/linker/section_tags.h
View file

@ -23,6 +23,9 @@
#define __ccm_data_section Z_GENERIC_SECTION(_CCM_DATA_SECTION_NAME)
#define __ccm_bss_section Z_GENERIC_SECTION(_CCM_BSS_SECTION_NAME)
#define __ccm_noinit_section Z_GENERIC_SECTION(_CCM_NOINIT_SECTION_NAME)
#define __dtcm_data_section Z_GENERIC_SECTION(_DTCM_DATA_SECTION_NAME)
#define __dtcm_bss_section Z_GENERIC_SECTION(_DTCM_BSS_SECTION_NAME)
#define __dtcm_noinit_section Z_GENERIC_SECTION(_DTCM_NOINIT_SECTION_NAME)
#define __imx_boot_conf_section Z_GENERIC_SECTION(IMX_BOOT_CONF)
#define __imx_boot_data_section Z_GENERIC_SECTION(IMX_BOOT_DATA)
#define __imx_boot_ivt_section Z_GENERIC_SECTION(IMX_BOOT_IVT)

4
include/linker/sections.h
View file

@ -56,6 +56,10 @@
#define _CCM_DATA_SECTION_NAME .ccm_data
#define _CCM_BSS_SECTION_NAME .ccm_bss
#define _CCM_NOINIT_SECTION_NAME .ccm_noinit
#define _DTCM_DATA_SECTION_NAME .dtcm_data
#define _DTCM_BSS_SECTION_NAME .dtcm_bss
#define _DTCM_NOINIT_SECTION_NAME .dtcm_noinit
#endif
#define IMX_BOOT_CONF .boot_hdr.conf