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feature: allow .bss segment in external memory

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This commit is contained in:
TianZhongXing
2018-09-14 18:28:18 +08:00
parent e6e2d7ebee
commit 974112378b
10 changed files with 91 additions and 14 deletions
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13
components/esp32/cpu_start.c
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@@ -92,6 +92,10 @@ extern int _bss_start;
extern int _bss_end;
extern int _rtc_bss_start;
extern int _rtc_bss_end;
#if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
extern int _ext_ram_bss_start;
extern int _ext_ram_bss_end;
#endif
extern int _init_start;
extern void (*__init_array_start)(void);
extern void (*__init_array_end)(void);
@@ -153,6 +157,11 @@ void IRAM_ATTR call_start_cpu0()
#if CONFIG_SPIRAM_BOOT_INIT
esp_spiram_init_cache();
if (esp_spiram_init() != ESP_OK) {
#if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
ESP_EARLY_LOGE(TAG, "Failed to init external RAM and place some block started symbol in it");
abort();
#endif
#if CONFIG_SPIRAM_IGNORE_NOTFOUND
ESP_EARLY_LOGI(TAG, "Failed to init external RAM; continuing without it.");
s_spiram_okay = false;
@@ -201,7 +210,9 @@ void IRAM_ATTR call_start_cpu0()
}
}
#endif
#if CONFIG_SPIRAM_ALLOW_BSS_SEG_EXTERNAL_MEMORY
memset(&_ext_ram_bss_start, 0, (&_ext_ram_bss_end - &_ext_ram_bss_start) * sizeof(_ext_ram_bss_start));
#endif
/* Initialize heap allocator. WARNING: This *needs* to happen *after* the app cpu has booted.
If the heap allocator is initialized first, it will put free memory linked list items into
memory also used by the ROM. Starting the app cpu will let its ROM initialize that memory,