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zephyr: lib: alloc.c: Add heap for ARM64 platforms #7464

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Merged
dbaluta merged 1 commit into from
Apr 20, 2023
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zephyr: lib: alloc.c: Add heap for ARM64 platforms #7464

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12 changes: 12 additions & 0 deletions zephyr/lib/alloc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -81,6 +81,18 @@ __section(".heap_mem") static uint8_t __aligned(PLATFORM_DCACHE_ALIGN) heapmem[H
#define HEAPMEM_SIZE (256 * 1024)
char __aligned(8) heapmem[HEAPMEM_SIZE];

#elif defined(CONFIG_ARM64)

@kv2019i kv2019i Apr 19, 2023

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I was wondering whether this should be before CONFIG_ARCH_POSIX, but the two seem mutually exclusive, so this is ok.

/* for ARM64 the heap is placed inside the .bss section.
*
* This is because we want to avoid introducing new sections in
* the arm64 linker script. Also, is there really a need to place
* it inside a special section?
*
* i.MX93 is the only ARM64-based platform so defining the heap this way
* for all ARM64-based platforms should be safe.
*/
static uint8_t __aligned(PLATFORM_DCACHE_ALIGN) heapmem[HEAPMEM_SIZE];

#else

extern char _end[], _heap_sentry[];
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