Commit graph

12 commits

Author SHA1 Message Date
Alex Lisitsyn
ec5eb1e5c2 esp32: Add option to place.rtc_data and .rtc_rodata into the RTC_FAST segment
Changes:
KConfig: The option CONFIG_ESP32_RTCDATA_IN_FAST_MEM is added in Kconfig file for esp32 component.
esp32.common.ld: added support of RTC_DATA_ATTR, RTC_RODATA_ATTR data placement into appropriate segment according to Kconfig option.
esp32.ld: linker script is modified to set alias for memory segment selected by Kconfig option to place data. The segments for force placement are added for RTC_FAST_ATTR, RTC_SLOW_ATTR attributes.
esp_attr.h: added new attributes RTC_FAST_ATTR, RTC_SLOW_ATTR for force placement into fest/slow memory.
test_rtc_fast.c: Added unit test cases to check data placement into appropriate memory segment.
Updated documentation for RTC_DATA_ATTR, RTC_FAST_ATTR, RTC_SLOW_ATTR in deep_sleep_stub.rst file.

TW#18001
Closes https://github.com/espressif/esp-idf/issues/1553
2018-09-12 09:25:13 +02:00
Angus Gratton
f8580ea98f esp32: Change 192KB runtime static limit workaround to a 176KB link time workaround
Turns out some app memory around 0x3ffdc000 is also used by APP CPU.

This is a workaround until code to remove the 176KB limit is committed.
2017-12-27 11:59:54 +11:00
Deomid Ryabkov
8c1acb0363 Provide a default for CONFIG_BT_RESERVE_DRAM
...when BT is not built

Merges https://github.com/espressif/esp-idf/pull/910
2017-08-30 17:55:00 +10:00
Angus Gratton
2d9770fd00 linker script: Add some comments about significance of 0x18 byte offset 2017-07-19 17:38:05 +10:00
Angus Gratton
c230e4280c linker scripts: Limit DROM/IROM section lengths correctly 2017-07-19 16:33:48 +10:00
Angus Gratton
d92c541b1a esptool: Optimise generated image size by using RAM-loaded data for padding
Can save almost 128KB from some images.
2017-07-19 16:24:17 +10:00
jack
4e092be6d6 Add Comments
We reserve 4KB Slow RTC memory to save RF calibation result and BT NVS data.
If not all these Slow RTC momory Blocks are used, we will open the other parts.
2016-09-29 16:29:13 +08:00
Angus Gratton
103a2a0079 esp32: Allow RTC slow memory to be reserved for ULP coprocessor 2016-09-28 11:15:29 +08:00
Angus Gratton
2c6ab8579a esp32: Pass memory layout linker script through C preprocessor
C preprocessor is a bit icky, but with ULP we will have 3 possible
variables influencing the memory layout and 9 linker scripts is too
many!
2016-09-28 11:15:29 +08:00
Angus Gratton
7c494055e3 esp32: Bootloader wake deep sleep stub
App can contain a stub program resident in RTC fast memory. Bootloader
will load the stub on initial boot. If the device wakes from deep sleep,
the stub is run immediately (before any other data is loaded, etc.)

To implement a custom wake stub, implement a function in your program:

```
void RTC_IRAM_ATTR esp_wake_deep_sleep(void)
{
  esp_default_wake_deep_sleep();
  // other wake logic
}
```

... and it will replace the default implementation.
2016-09-28 11:14:58 +08:00
Wu Jian Gang
3e8bb67e75 ld: fix ld to use ram as much as possible, rearrange heap_alloc area 2016-08-25 11:07:53 +08:00
Wu Jian Gang
c3102e8fb2 ld: seperate/rename eagle.xxx.ld to esp32.xxx.ld 2016-08-25 11:07:53 +08:00