Ivan Grokhotkov 8ee3decdba bootloader, esp_system: increase static allocation space for esp32s3 ... The previously used splits between memory allocated for ROM code, 2nd stage bootloader and the app were somewhat safe and conservative. This resulted in some space being unavailable for static allocation in the app. This commit increases the space available for static allocation to the maximum possible amount. 1. Some of the ROM code static allocation is only used in UART/USB/SPI download modes. This region ("shared buffers") has been placed at the lower end of ROM memory area, to be reusable in flash boot mode. The 2nd stage bootloader linker script is modified to "pack" all sections exactly up to the end but with roughly 8K margin between startup stacks. 2. Instead of calculating the sections placement and hardcoding the addresses in the LD script again, rewrite it to calculate the start address of each memory region automatically based on the logic above. 3. Adjust the app memory layout (SRAM_IRAM_END) accordingly, increasing the space available for static allocation. Overall these changes increase the space available for static allocation by about 78kB. The downside of these changes is that the 2nd stage bootloader .data segment is now directly adjacent to the startup stack on the PRO CPU. Previously, there was effectively about 78kB of extra stack space for the PRO CPU, before the stack would run into the data segment.		2022-06-15 17:57:11 +05:30
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bootloader.ld	bootloader, esp_system: increase static allocation space for esp32s3	2022-06-15 17:57:11 +05:30
bootloader.rom.ld	bootloader: add linker script for esp32s3	2020-07-20 10:51:05 +08:00