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esp32: allow up to 8 kB of ULP program size

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The remaining 4 kB had been reserved for storing RF calibration and
BT stack state since 4e092be6. However, these features never got
implemented. If we ever need to place RF related data into RTC slow
memory, we can do this by creating a variable with RTC_NOINIT_ATTR
instead.

https://github.com/espressif/esp-idf/issues/6515
This commit is contained in:
Ivan Grokhotkov 2020-10-05 11:41:39 +02:00 committed by Marius Vikhammer
parent 45a488f9e1
commit 3ccd1ae6e2
2 changed files with 2 additions and 3 deletions
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2
components/esp32/ld/esp32.ld
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@ -95,7 +95,7 @@ MEMORY
Start of RTC slow memory is reserved for ULP co-processor code + data, if enabled.
*/
rtc_slow_seg(RW) : org = 0x50000000 + CONFIG_ESP32_ULP_COPROC_RESERVE_MEM,
len = 0x1000 - CONFIG_ESP32_ULP_COPROC_RESERVE_MEM
len = 0x2000 - CONFIG_ESP32_ULP_COPROC_RESERVE_MEM
/* external memory ,including data and text */
extern_ram_seg(RWX) : org = 0x3F800000,

3
components/esp_rom/include/esp32/rom/rtc.h
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@ -45,8 +45,7 @@ extern "C" {
*************************************************************************************
* rtc memory addr type size usage
* 0x3ff61000(0x50000000) Slow SIZE_CP Co-Processor code/Reset Entry
* 0x3ff61000+SIZE_CP Slow 4096-SIZE_CP
* 0x3ff62800 Slow 4096 Reserved
* 0x3ff61000+SIZE_CP Slow 8192-SIZE_CP
*
* 0x3ff80000(0x400c0000) Fast 8192 deep sleep entry code
*