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Add PICO_CRT0_NO_RESET_SECTION #2453

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Merged
Parent: Remove unnecessary check in pio_encode_sideset_opt
merged 2 commits into from
May 7, 2025
Merged

Add PICO_CRT0_NO_RESET_SECTION #2453

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45506a3
Add PICO_CRT0_NO_RESET_SECTION
kilograham May 2, 2025
0fcc3be
fix typos
kilograham May 6, 2025
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9 changes: 8 additions & 1 deletion src/rp2_common/pico_crt0/crt0.S
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Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,11 @@

pico_default_asm_setup

// PICO_CONFIG: PICO_CRT0_NO_RESET_SECTION, Omit .reset section contents containing the startup code. This must be set if you want to replace the startup code while still keeping the reset of pico_crt0 as the reset section define here is not garbage collected, type=bool, default=0, advanced=true, group=pico_crt0
#ifndef PICO_CRT0_NO_RESET_SECTION
#define PICO_CRT0_NO_RESET_SECTION 0
#endif

#ifdef PICO_NO_STORED_VECTOR_TABLE
#warning PICO_NO_STORED_VECTOR_TABLE is no longer used. PICO_MINIMAL_STORED_VECTOR_TABLE is not identical but usually serves the same purpose
#endif
Expand Down Expand Up @@ -328,6 +333,7 @@ binary_info_header:

// ----------------------------------------------------------------------------

#if !PICO_CRT0_NO_RESET_SECTION
.section .reset, "ax"

// On flash builds, the vector table comes first in the image (conventional).
Expand Down Expand Up @@ -492,7 +498,7 @@ data_cpy:
// Note the data copy table is still included for NO_FLASH builds, even though
// we skip the copy, because it is listed in binary info

.align 2
.p2align 2
data_cpy_table:
#if PICO_RP2350 && PICO_EMBED_XIP_SETUP && !PICO_NO_FLASH
.word __boot2_start__
Expand Down Expand Up @@ -529,6 +535,7 @@ data_cpy_table:
runtime_init:
bx lr

#endif // PICO_CRT0_NO_RESET
// ----------------------------------------------------------------------------
// Stack/heap dummies to set size

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