alex/esp-idf
alex/esp-idf
1
0
Fork 0
mirror of https://github.com/espressif/esp-idf.git synced 2024-10-05 20:47:46 -04:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

Do not disable entire IRAM pool; instead disable only the bit that is used. This gives us 50K of iram at the moment.

Browse Source
This commit is contained in:
Jeroen Domburg 2016-12-09 16:17:26 +08:00 committed by Jeroen Domburg
parent 25e7f3a303
commit 1cb2081d99
1 changed files with 7 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
components/esp32/heap_alloc_caps.c
View File

@ -166,7 +166,7 @@ static void disable_mem_region(void *from, void *to) {
ToDo: These are very dependent on the linker script, and the logic involving this works only
because we're not using the SPI flash yet! If we enable that, this will break. ToDo: Rewrite by then.
*/
extern int _bss_start, _heap_start;
extern int _bss_start, _heap_start, _init_start, _iram_text_end;
/*
Initialize the heap allocator. We pass it a bunch of region descriptors, but we need to modify those first to accommodate for
@ -177,11 +177,11 @@ Same with loading of apps. Same with using SPI RAM.
void heap_alloc_caps_init() {
int i;
//Disable the bits of memory where this code is loaded.
disable_mem_region(&_bss_start, &_heap_start);
disable_mem_region(&_bss_start, &_heap_start); //DRAM used by bss/data static variables
disable_mem_region(&_init_start, &_iram_text_end); //IRAM used by code
disable_mem_region((void*)0x3ffae000, (void*)0x3ffb0000); //knock out ROM data region
disable_mem_region((void*)0x40070000, (void*)0x40078000); //CPU0 cache region
disable_mem_region((void*)0x40078000, (void*)0x40080000); //CPU1 cache region
disable_mem_region((void*)0x40080000, (void*)0x400a0000); //pool 2-5
// TODO: this region should be checked, since we don't need to knock out all region finally
disable_mem_region((void*)0x3ffe0000, (void*)0x3ffe8000); //knock out ROM data region
@ -216,11 +216,11 @@ void heap_alloc_caps_init() {
}
}
ESP_EARLY_LOGI(TAG, "Initializing heap allocator:");
ESP_EARLY_LOGI(TAG, "Initializing. RAM available for heap:");
for (i=0; regions[i].xSizeInBytes!=0; i++) {
if (regions[i].xTag != -1) {
ESP_EARLY_LOGI(TAG, "Region %02d: %08X len %08X tag %s", i,
(int)regions[i].pucStartAddress, regions[i].xSizeInBytes, tag_desc[regions[i].xTag].name);
ESP_EARLY_LOGI(TAG, "At %08X len %08X (%d KiB): %s",
(int)regions[i].pucStartAddress, regions[i].xSizeInBytes, regions[i].xSizeInBytes/1024, tag_desc[regions[i].xTag].name);
}
}
//Initialize the malloc implementation.
@ -267,3 +267,4 @@ void *pvPortMallocCaps( size_t xWantedSize, uint32_t caps )
//Nothing usable found.
return NULL;
}