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linker: esp32: fix linker to enable proper MMU usage

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ESP32 flash_mmap() function requires `_rodata_reserved_start` address
to be at the beginning of RODATA. This allows adding memory-mapped flash
areas.

Fixes #52764

Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>
This commit is contained in:
Sylvio Alves 2023-10-17 05:49:39 -03:00 • committed by Carles Cufí
commit 3f5ea785f2
4 changed files with 7 additions and 6 deletions
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4
soc/riscv/espressif_esp32/esp32c3/default.ld
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@ -130,6 +130,7 @@ SECTIONS
SECTION_PROLOGUE(_RODATA_SECTION_NAME,,)
{
_rodata_reserved_start = ABSOLUTE(.);
_rodata_start = ABSOLUTE(.);
*(.rodata_desc .rodata_desc.*)
@ -186,7 +187,6 @@ SECTIONS
*(.rodata_wlog)
*(.rodata_wlog*)
_thread_local_end = ABSOLUTE(.);
_rodata_reserved_end = ABSOLUTE(.);
. = ALIGN(4);
} GROUP_DATA_LINK_IN(RODATA_REGION, ROMABLE_REGION)
@ -203,6 +203,7 @@ SECTIONS
* This is used to calculate the size of the _image_drom_size variable */
SECTION_PROLOGUE(_RODATA_SECTION_END,,)
{
_rodata_reserved_end = ABSOLUTE(.);
. = ALIGN(4);
_image_rodata_end = ABSOLUTE(.);
} GROUP_DATA_LINK_IN(RODATA_REGION, ROMABLE_REGION)
@ -402,7 +403,6 @@ SECTIONS
{
. = SIZEOF(_RODATA_SECTION_NAME);
. = ALIGN(0x10000) + 0x20;
_rodata_reserved_start = .;
} GROUP_LINK_IN(FLASH_CODE_REGION)
.flash.text : ALIGN(IROM_SEG_ALIGN)