diff options
| author | Nicolas Pitre <nicolas.pitre@linaro.org> | 2018-03-08 20:19:48 -0500 |
|---|---|---|
| committer | Nicolas Pitre <nicolas.pitre@linaro.org> | 2018-03-09 20:20:22 -0500 |
| commit | c3146c43db4974f4571bd9d42b172ca03a9137c6 (patch) | |
| tree | abb843dd7730ea3b8dad12b7d4c780536bb4709b /arch/arm/kernel/vmlinux.lds.h | |
| parent | 9147095896fb321ae10ec5a5f789079318137ac9 (diff) | |
ARM: linker script: factor out TCM bits
This is a plain move with identical results, and therefore
still broken in the XIP case.
Signed-off-by: Nicolas Pitre <nico@linaro.org>
Tested-by: Chris Brandt <Chris.Brandt@renesas.com>
Diffstat (limited to 'arch/arm/kernel/vmlinux.lds.h')
| -rw-r--r-- | arch/arm/kernel/vmlinux.lds.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm/kernel/vmlinux.lds.h b/arch/arm/kernel/vmlinux.lds.h index 0a4682ecc4ac..cf9dabbdbde4 100644 --- a/arch/arm/kernel/vmlinux.lds.h +++ b/arch/arm/kernel/vmlinux.lds.h @@ -113,3 +113,63 @@ __stubs_end = .; \ \ PROVIDE(vector_fiq_offset = vector_fiq - ADDR(.vectors)); + +#define ARM_TCM \ + /* \ + * We align everything to a page boundary so we can \ + * free it after init has commenced and TCM contents have \ + * been copied to its destination. \ + */ \ + .tcm_start : { \ + . = ALIGN(PAGE_SIZE); \ + __tcm_start = .; \ + __itcm_start = .; \ + } \ + \ + /* \ + * Link these to the ITCM RAM \ + * \ + * Put VMA to the TCM address and LMA to the common RAM \ + * and we'll upload the contents from RAM to TCM and free \ + * the used RAM after that. \ + */ \ + .text_itcm ITCM_OFFSET : AT(__itcm_start) \ + { \ + __sitcm_text = .; \ + *(.tcm.text) \ + *(.tcm.rodata) \ + . = ALIGN(4); \ + __eitcm_text = .; \ + } \ + \ + /* \ + * Reset the dot pointer, this is needed to create the \ + * relative __dtcm_start below (to be used as extern in code). \ + */ \ + . = ADDR(.tcm_start) + SIZEOF(.tcm_start) + SIZEOF(.text_itcm); \ + \ + .dtcm_start : { \ + __dtcm_start = .; \ + } \ + \ + /* \ + * TODO: add remainder of ITCM as well, \ + * that can be used for data! \ + */ \ + .data_dtcm DTCM_OFFSET : AT(__dtcm_start) \ + { \ + . = ALIGN(4); \ + __sdtcm_data = .; \ + *(.tcm.data) \ + . = ALIGN(4); \ + __edtcm_data = .; \ + } \ + \ + /* Reset the dot pointer or the linker gets confused */ \ + . = ADDR(.dtcm_start) + SIZEOF(.data_dtcm); \ + \ + /* End marker for freeing TCM copy in linked object */ \ + .tcm_end : AT(ADDR(.dtcm_start) + SIZEOF(.data_dtcm)){ \ + . = ALIGN(PAGE_SIZE); \ + __tcm_end = .; \ + } |