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openipc: SigmaStar NAND environment back to 256 KiB, as openipc-hisilicon #111

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Merged
dimerr merged 1 commit into from
Nov 7, 2026
Merged

openipc: SigmaStar NAND environment back to 256 KiB, as openipc-hisilicon #111

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4 changes: 2 additions & 2 deletions CLAUDE.md
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Original file line number Diff line number Diff line change
Expand Up @@ -157,8 +157,8 @@ IPL_CUST at `0x10000`, the uImage at `0x20000`.

The layout and environment of openipc-hisilicon (`include/configs/openipc-common.h`,
`openipc/nand_config`): `768k(boot),256k(env),-(ubi)`, the environment at
`0xC0000` (128 KiB in the 256 KiB range, so one bad block there leaves the
other; openipc-hisilicon's is 256 KiB in 256), one UBI device from `0x100000` whose UBIFS
`0xC0000` (256 KiB, range 256 KiB, as openipc-hisilicon's and the
firmware's `fw_env.config`), one UBI device from `0x100000` whose UBIFS
`rootfs` volume holds the kernel as `/boot/fitImage` or `/boot/uImage`, and
`rootfs_data` on the rest; `root=ubi0:rootfs rootfstype=ubifs ubi.mtd=2,2048`.
`common/openipc.c` is the common one (openipc-ingenic's, `OPENIPC_SPI_NAND`
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5 changes: 2 additions & 3 deletions include/configs/openipc-common.h
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Expand Up @@ -201,9 +201,8 @@
#define OPENIPC_NAND_MTDPARTS "768k(boot),256k(env),-(ubi)"

/* Environment lives in the NAND 'env' partition: CONFIG_ENV_OFFSET 0xc0000,
* CONFIG_ENV_RANGE 0x40000 as on openipc-hisilicon, CONFIG_ENV_SIZE 0x20000
* so that a bad block in the partition leaves room for it
* (openipc/nand_config). */
* CONFIG_ENV_SIZE and CONFIG_ENV_RANGE 0x40000 (openipc/nand_config), as
* on openipc-hisilicon. */

#define CONFIG_BOOTARGS OPENIPC_MEMARGS_HEAD "console=ttyS0,115200 panic=20 init=/init root=ubi0:rootfs rootfstype=ubifs ubi.mtd=2,2048 mtdparts=\\${mtdparts}" OPENIPC_MEMARGS_TAIL " \\${extras}"

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3 changes: 1 addition & 2 deletions openipc/nand_config
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Expand Up @@ -13,8 +13,7 @@ CONFIG_CMD_NAND_TRIMFFS=y
# CONFIG_CMD_NAND_TORTURE is not set
CONFIG_ENV_IS_IN_NAND=y
CONFIG_ENV_OFFSET=0xc0000
# 128 KiB in the 256 KiB partition: one bad block there leaves the other
CONFIG_ENV_SIZE=0x20000
CONFIG_ENV_SIZE=0x40000
CONFIG_ENV_RANGE=0x40000
CONFIG_MTD_PARTITIONS=y
CONFIG_CMD_MTDPARTS=y
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