stm32h7: do bss/data setup in crt0 for bootloader only
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commit bd73e0dd42d431b10fbd75ff147ede3d1949ade2 Author: Aidan MacDonald <[email protected]> Date: Thu Jan 22 13:36:40 2026 +0000 stm32h7: do bss/data setup in crt0 for bootloader only Change-Id: I67798a4370b01127364c40328549a6d3081545cf diff --git a/firmware/target/arm/stm32/crt0-stm32h7.S b/firmware/target/arm/stm32/crt0-stm32h7.S index 6be820c390..8c8c8d082d 100644 --- a/firmware/target/arm/stm32/crt0-stm32h7.S +++ b/firmware/target/arm/stm32/crt0-stm32h7.S @@ -52,9 +52,15 @@ reset_handler: b crt0_start - .global start - .type start, function + .global crt0_start + .type crt0_start, function crt0_start: +#ifdef BOOTLOADER + /* + * Initialize data/bss for bootloader + * (not needed on app since ELF loader takes care of it) + */ + /* Zero out BSS */ ldr a1, =_bssbegin ldr a2, =_bssend @@ -66,6 +72,7 @@ crt0_start: ldr a2, =_dataend ldr a3, =_datacopy bl crt0_area_copy +#endif /* Clear the main thread stack */ ldr a1, =stackbegin @@ -96,6 +103,7 @@ crt0_start: b main +#ifdef BOOTLOADER .local crt0_area_copy .type crt0_area_copy, function /* crt0_area_copy(uint32_t *dst, uint32_t *dst_end, const void *src) */ @@ -105,7 +113,7 @@ crt0_area_copy: strhi v1, [a1], #4 bhi crt0_area_copy bx lr - +#endif .local crt0_area_clear .type crt0_area_clear, function -- rockbox-cvs mailing list [email protected] https://lists.haxx.se/mailman/listinfo/rockbox-cvs