zephyr: Add patch to fix zero newlib sbrk() heap on i.MX8M ADSP#90
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Add west patch entry and patch file to fix the zero newlib sbrk() heap size on the i.MX8M ADSP when used with audioreach-engine. _heap_sentry was assigned to '.' immediately after the NOLOAD .heap_mem section in sdram1. When .heap_mem has no input objects, _heap_mem_end == _end == _heap_sentry, collapsing MAX_HEAP_SIZE to 0. Every malloc() call then returns NULL, causing init failures across the audioreach-engine stack. Fix by anchoring _heap_sentry to __stack (SDRAM1_BASE + SDRAM1_SIZE = 0x93400000), giving the newlib sbrk() arena the full remaining sdram1 space above _end. Signed-off-by: Aditya Rathi <aditrath@qti.qualcomm.com>
quic-plai
approved these changes
Jun 1, 2026
qti-sbojja
approved these changes
Jun 2, 2026
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Add west patch entry and patch file to fix the zero newlib sbrk() heap size on the i.MX8M ADSP when used with audioreach-engine.
_heap_sentry was assigned to '.' immediately after the NOLOAD .heap_mem section in sdram1. When .heap_mem has no input objects, _heap_mem_end == _end == _heap_sentry, collapsing MAX_HEAP_SIZE to 0. Every malloc() call then returns NULL, causing init failures across the audioreach-engine stack.
Fix by anchoring _heap_sentry to __stack (SDRAM1_BASE + SDRAM1_SIZE = 0x93400000), giving the newlib sbrk() arena the full remaining sdram1 space above _end.