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esp32c3: update linker script to support binary blobs

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To be able to link with the binary blobs that provide wifi and BLE, the
linker script needs a few tweaks.
This commit is contained in:
Ayke van Laethem
2024-01-27 13:18:18 +01:00
committed by Ron Evans
parent 2fb2113168
commit 70f1a5429a
1 changed files with 21 additions and 10 deletions
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targets/esp32c3.ld
+21 -10
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@@ -58,7 +58,7 @@ SECTIONS
*/
.rodata : ALIGN(4)
{
*(.rodata .rodata.*)
*(.rodata*)
. = ALIGN (4);
} >DROM
@@ -97,6 +97,7 @@ SECTIONS
_sdata = ABSOLUTE(.);
*(.sdata)
*(.data .data.*)
*(.dram*)
. = ALIGN (4);
_edata = ABSOLUTE(.);
} >DRAM
@@ -113,12 +114,22 @@ SECTIONS
. += SIZEOF(.data);
} > IRAM
/* Initialization code is loaded into IRAM. This memory area is also used by
* the heap, so no RAM is wasted.
/* IRAM segment. This contains some functions that always need to be loaded
* in IRAM, and contains initialization code.
* The initialization code is later reclaimed for the heap, so no RAM is
* wasted.
*/
.init : ALIGN(4)
.iram : ALIGN(4)
{
*(.iram*)
*(.wifislprxiram*)
*(.wifiextrairam*)
*(.wifi0iram*)
*(.wifislpiram*)
*(.wifirxiram*)
__init_start = .;
*(.init)
__init_end = .;
} >IRAM
/* Dummy section to put the IROM segment exactly behind the IRAM segment.
@@ -132,7 +143,7 @@ SECTIONS
. += 0x18; /* esp_image_header_t */
. += SIZEOF(.rodata) + ((SIZEOF(.rodata) != 0) ? 0x8 : 0); /* DROM segment (optional) */
. += SIZEOF(.data) + ((SIZEOF(.data) != 0) ? 0x8 : 0); /* DRAM segment (optional) */
. += SIZEOF(.init) + 0x8; /* IRAM segment */
. += SIZEOF(.iram) + 0x8; /* IRAM segment */
. += 0x8; /* IROM segment header */
} > IROM
@@ -158,17 +169,17 @@ SECTIONS
* The magic value comes from here:
* https://github.com/espressif/esp-idf/blob/61299f879e/components/bootloader/subproject/main/ld/esp32c3/bootloader.ld#L191
*/
ASSERT((_edata + SIZEOF(.init)) < 0x3FCDE710, "the .init section overlaps with the stack used by the boot ROM, possibly causing corruption at startup")
ASSERT((_edata + SIZEOF(.iram)) < 0x3FCDE710, "the .iram section overlaps with the stack used by the boot ROM, possibly causing corruption at startup")
}
/* For the garbage collector.
* Note that _heap_start starts after _edata (without caring for the .init
* section), because the .init section isn't necessary anymore after startup and
* can thus be overwritten by the heap.
* Note that _heap_start starts after _edata + most of the IRAM section.
* It starts just before the initialisation code, which isn't necessary anymore
* after startup and can thus be overwritten by the heap.
*/
_globals_start = _sbss;
_globals_end = _edata;
_heap_start = _edata;
_heap_start = _edata + SIZEOF(.iram) - (__init_end - __init_start);
_heap_end = ORIGIN(DRAM) + LENGTH(DRAM);
_stack_size = 4K;