boards: fix mtd_partition() argument units in flash partition loops - #20014
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@rongbc Please run checkpatch (see more at https://nuttx.apache.org/docs/latest/components/tools/checkpatch.html) Logs: |
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mtd_partition(mtd, firstblock, nblocks) takes the partition offset and size in units of the underlying device "blocks" (geo.blocksize), not erase blocks. Several board drivers accumulated partoffset and computed the partition size in erase-block units and passed them straight to mtd_partition(), so on devices where blocksize != erasesize (W25/SST25: 256B vs 4KB, SAMD5E5 progmem: 512B vs 8KB) every partition came out erasesize/blocksize (16x) too small and misaligned. Convert partoffset and partszbytes to geo.blocksize units at the mtd_partition() call site while keeping the erase-block accumulation. Affected boards: - stm32f103-minimum (W25) - at32f437-mini (W25) - stm32f429i-disco (SST25F064, enabled in the extflash defconfig) - metro-m4 (SAMD5E5 progmem) Also fix pre-existing nxstyle violations in the touched files so the change passes checkpatch (see CONTRIBUTING.md). Signed-off-by: rongbaichuan <rongbaichuan1027@163.com>
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Summary
mtd_partition(mtd, firstblock, nblocks)takes the partition offset and size in units of the underlying device "blocks" (geo.blocksize), not erase blocks. The implementation is authoritative:drivers/mtd/mtd_partition.c:875computesblkpererase = erasesize / blocksize;drivers/mtd/mtd_partition.c:885-886divides the incomingfirstblock/nblocksbyblkpereraseto derive erase-block boundaries (erasestart/eraseend), i.e. the inputs are treated asblocksizeunits;part_bread/part_bwrite(drivers/mtd/mtd_partition.c:274/:296) usepriv->firstblockdirectly as a block index into the parent device;include/nuttx/mtd/mtd.h:286("The offset in bytes to the first block") is stale — the implementation is what callers must match.Four board drivers instead accumulated
partoffsetand computed the partition size in erase-block units and passed them straight tomtd_partition(). On devices whereblocksize != erasesize— W25/SST25 SPI NOR (256B vs 4KB) and SAMD5E5 program memory (512B vs 8KB cluster) — every partition came outerasesize/blocksize(16x) too small, and partitions after the first were misaligned/overlapping. On the W25 this is hardware-confirmed: a 512KB partition is reported as 32KB (see Testing).This change converts
partoffsetandpartszbytestogeo.blocksizeunits at themtd_partition()call site while keeping the loop's erase-block accumulation:Affected boards:
stm32f103-minimum(W25Q32FV on SPI1)at32f437-mini(W25, same code as upstreamstm32f103-minimum)stm32f429i-disco(SST25F064; the buggy path is enabled in the shippedextflashdefconfig)metro-m4(SAMD5E5 program memory viamtd_progmem)The remaining
mtd_partition()call sites were audited and are correct:b-l475e-iot01a/stm32l476vg-discoalready usegeo.blocksize;mikroe-stm32f4hardcodes the 256B conversion; the progmem OTA boards (imxrt/nrf5x/samv7/stm32h7) pass page units that equalgeo.blocksize; the ESP32/ESP32C3/ESP32S3, BL602, TLSR82, RTL8720C andfs/partitionpaths are internally consistent.Impact
blocksize/erasesizeof the intended region and should be re-created/reformatted after this change.mtd_partition()signature untouched). Pure board-level code change.blocksize != erasesizeare affected; devices withblocksize == erasesize(e.g.CONFIG_W25_SECT512) behave unchanged.include/nuttx/mtd/mtd.h:286could be fixed separately; out of scope here).Testing
Hardware (bug reproduction, before fix) — environment:
15678acfstm32f103-minimumcode, reproduced on its derived boardstm32f103-mini-v2(STM32F103RCT6)CONFIG_STM32F103MINIMUM_FLASH=y,CONFIG_STM32F103MINIMUM_FLASH_PART=y,CONFIG_MTD_SMART=y,CONFIG_FS_SMARTFS=y; partition list512,512,512,512(4×512KB)./tools/configure.sh -l stm32f103-minimum:xxx && makeTest steps and result:
mksmartfs /dev/smart0p1and mount it.After the fix (this workspace, compile-level):
15678acf+ this change.stm32f103-minimum/src/stm32_w25.candat32f437-mini/src/at32_w25.c:-fsyntax-onlywith the partition path emulated (CONFIG_STM32_SPI1/CONFIG_AT32_SPI1,CONFIG_MTD_W25,CONFIG_*_FLASH_PART,CONFIG_FS_SMARTFS,CONFIG_MTD_SMART, ...) → exit 0, no errors.stm32f429i-disco/src/stm32_bringup.candsamd5e5/metro-m4/src/sam_smartfs.c: full-file syntax check is not possible in this workspace (generatedinclude/nuttx/config.h/include/arch/chippoint at a stale, different board build); the exact edited statements were extracted from disk into a type-stub harness reproducing the real signatures and compiled with-Wall -Wextra→ exit 0, no errors.mtd_partition(..., partszbytes / erasesize)call sites.Expected post-fix hardware result (to be confirmed on board): repeating the same steps above,
/dev/smart0p1should report 512KB, and/dev/mtd0p*offsets should be contiguous and non-overlapping.