COLDCARD mainline RNG hotfix commit ca724637
coldcard-firmware-mainline-hotfix
https://github.com/Coldcard/firmware/commit/ca72463709f4e3f8964952039d5caf955f566a87.patch
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Immutable patch for the direct mainline source commit contained in the normal Mk4/Mk5 v5.6.0 and Q v1.5.0Q release histories.
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From ca72463709f4e3f8964952039d5caf955f566a87 Mon Sep 17 00:00:00 2001 From: "Peter D. Gray" <[email protected]> Date: Thu, 30 Jul 2026 22:40:23 -0400 Subject: [PATCH] fixes rng --- stm32/COLDCARD/mpconfigboard.mk | 7 +++++++ stm32/COLDCARD/rng.c | 6 +++++- stm32/COLDCARD/rng.h | 3 ++- stm32/COLDCARD_MK4/mpconfigboard.h | 1 + stm32/COLDCARD_MK4/mpconfigboard.mk | 8 +++++++- stm32/COLDCARD_MK4/rng.c | 6 +++++- stm32/COLDCARD_MK4/rng.h | 3 ++- stm32/COLDCARD_Q1/mpconfigboard.mk | 6 ++++++ stm32/MK-Makefile | 2 +- stm32/Q1-Makefile | 2 +- stm32/shared.mk | 23 +++++++++++++++++++++++ 11 files changed, 60 insertions(+), 7 deletions(-) diff --git a/stm32/COLDCARD/mpconfigboard.mk b/stm32/COLDCARD/mpconfigboard.mk index fa3560f77..6d7e3cf5f 100644 --- a/stm32/COLDCARD/mpconfigboard.mk +++ b/stm32/COLDCARD/mpconfigboard.mk @@ -69,6 +69,13 @@ COPT += -g # bugfix IIRC build-COLDCARD/boards/COLDCARD/modckcc.o: COPT = -O0 -DNDEBUG +# Do not compile MicroPython's fallback PRNG. The board-specific rng.c +# provides rng_get(), and this empty object satisfies the upstream object list. +$(BUILD)/rng.o: CFLAGS += -Dpyb_rng_yasmarang=error-do-not-want-this +$(BUILD)/rng.o: + $(ECHO) "SKIP stm32/rng.c" + $(Q)$(CC) $(CFLAGS) -x c -c /dev/null -o $@ + files: # SRC_C: $(SRC_C) @echo diff --git a/stm32/COLDCARD/rng.c b/stm32/COLDCARD/rng.c index 374cd32c6..00e3d203a 100644 --- a/stm32/COLDCARD/rng.c +++ b/stm32/COLDCARD/rng.c @@ -79,6 +79,11 @@ static uint32_t rng_get_or_fault(void) return last_value;Excerpt only. The complete copy is held offline and backs quotations on this site. The original publication remains the canonical public source.
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