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spiram: Add soc macro for SPIRAM address space size, use it where applicable

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Reference https://github.com/espressif/esp-idf/pull/5373
This commit is contained in:
Angus Gratton
2020-06-16 14:51:31 +10:00
parent 5eb5bb5f72
commit 3f034a5005
6 changed files with 18 additions and 10 deletions
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8
components/esp32/spiram.c
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@@ -74,11 +74,11 @@ size_t __attribute__((weak)) esp_himem_reserved_area_size(void) {
}
static int spiram_size_usable_for_malloc(void)
static size_t spiram_size_usable_for_malloc(void)
{
int s=esp_spiram_get_size();
if (s>4*1024*1024) s=4*1024*1024; //we can map at most 4MiB
return s-esp_himem_reserved_area_size();
/* SPIRAM chip may be larger than the size we can map into address space */
size_t s = MIN(esp_spiram_get_size(), SOC_EXTRAM_DATA_SIZE);
return s - esp_himem_reserved_area_size();
}