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Merge branch 'bugfix/flash_rodata_any_alignement_v4.3' into 'release/v4.3'

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build: Fix cache issue and add dedicated section for (Custom) App version info (backport v4.3)

See merge request espressif/esp-idf!13448
This commit is contained in:
Angus Gratton
2021-06-22 00:23:49 +00:00
parent 7182219718 b7707c54ce
commit 9f6e09d0d3
15 changed files with 268 additions and 21 deletions
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9
components/esp32c3/ld/esp32c3.ld
View File

@@ -107,3 +107,12 @@ REGION_ALIAS("rtc_data_location", rtc_iram_seg );
#else
REGION_ALIAS("default_rodata_seg", dram0_0_seg);
#endif // CONFIG_APP_BUILD_USE_FLASH_SECTIONS
/**
* If rodata default segment is placed in `drom0_0_seg`, then flash's first rodata section must
* also be first in the segment.
*/
#if CONFIG_APP_BUILD_USE_FLASH_SECTIONS
ASSERT(_flash_rodata_dummy_start == ORIGIN(default_rodata_seg),
".flash_rodata_dummy section must be placed at the beginning of the rodata segment.")
#endif

25
components/esp32c3/ld/esp32c3.project.ld.in
View File

@@ -283,21 +283,40 @@ SECTIONS
_flash_cache_start = ABSOLUTE(0);
} > default_code_seg
/**
* This dummy section represents the .flash.text section but in default_rodata_seg.
* Thus, it must have its alignement and (at least) its size.
*/
.flash_rodata_dummy (NOLOAD):
{
. = SIZEOF(.flash.text);
_flash_rodata_dummy_start = .;
/* Start at the same alignement constraint than .flash.text */
. = ALIGN(ALIGNOF(.flash.text));
/* Create an empty gap as big as .flash.text section */
. = . + SIZEOF(.flash.text);
/* Prepare the alignement of the section above. Few bytes (0x20) must be
* added for the mapping header. */
. = ALIGN(0x10000) + 0x20;
_rodata_reserved_start = .;
} > default_rodata_seg
/* When modifying the alignment, don't forget to update tls_section_alignment in pxPortInitialiseStack */
.flash.rodata : ALIGN(0x10)
.flash.appdesc : ALIGN(0x10)
{
_rodata_start = ABSOLUTE(.);
*(.rodata_desc .rodata_desc.*) /* Should be the first. App version info. DO NOT PUT ANYTHING BEFORE IT! */
*(.rodata_custom_desc .rodata_custom_desc.*) /* Should be the second. Custom app version info. DO NOT PUT ANYTHING BEFORE IT! */
/* Create an empty gap within this section. Thanks to this, the end of this
* section will match .flash.rodata's begin address. Thus, both sections
* will be merged when creating the final bin image. */
. = ALIGN(ALIGNOF(.flash.rodata));
} >default_rodata_seg
.flash.rodata : ALIGN(0x10)
{
_flash_rodata_start = ABSOLUTE(.);
mapping[flash_rodata]
*(.irom1.text) /* catch stray ICACHE_RODATA_ATTR */