masayuki2009 opened a new pull request #3833:
URL: https://github.com/apache/incubator-nuttx/pull/3833
## Summary
- This PR consists of the following 11 commits to improve performance on
Spresense
- commit 1: boards: spresense: Introduce ramconfig-new.ld for the system bus
- In order to support the atomic instructions by ldrex/strex instruction
in NuttX SMP, the data or later sections are mapped to the system bus.
- commit 2: arch: cxd56xx: Adjust loops per msec for the new memory map
- commit 3: arch: cxd56xx: Introduce cxd56_modtext.c
- This commit introduces cxd56_modtext.c to allocate a separate text
memory for ELF
- commit 4: arch: cxd56xx: Introduce CONFIG_CXD56_USE_SYSBUS in Kconfig
- commit 5: arch: cxd56xx: Use uintptr_t for srcend/dstend in
dma_descriptor_s
- commit 6: arch: cxd56xx: Introduce CXD56_PHYSADDR
- This commit converts data to the physical address for DMA transfer.
- commit 7: drivers: audio: Apply CXD56_PHYSADDR to cxd56.c
- This commit converts data to the physical address for DMA transfer.
- commit 8: boards: cxd56xx: Apply CXD56_PHYSADDR to cxd56_imageproc.c and
cxd56_audio_dma.c
- This commit converts data to the physical address for DMA transfer.
- commit 9: arch: cxd56xx: Introduce up_testset2 in cxd56_testset.c
- In cxd56xx, ldrex/strex behavior is slightly different from
other Arm architectures. Dummy strex must be issued to release
the exclusive load & store unit.
- commit 10: boards: spresense: Normalize rndis_smp and wifi_smp defconfigs
- commit 11: arch: cxd56xx: Fix a register name in cxd56_sdhci.c
## Impact
- Spresense only
- Bootloader for Spresense SDK 2.1.0 or later must be installed
## Testing
- spresense:smp, spersense:elf, spresense:posix_spawn
- spresense:wifi, spresese:wifi_smp, spresense:rndis_smp
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