# DCENTos Buildroot defconfig — Antminer S21 (Amlogic am3-aml NoPic).
# D-Central Technologies, 2026.
#
# Target: Amlogic A113D (ARM Cortex-A53 quad, aarch64).
# Chip:   BM1368 (1x108 chips on current .135 lab unit).
# PSU:    APW12 class, PMBus enable plus GPIO 437 PSU_nEN.
# Boot:   BL2 -> FIP -> U-Boot 2015.01 -> kernel 4.9.113 (no FPGA bitstream).
#
# Per-product OVERRIDE layer. Shared content lives in:
#   dcentos-common.fragment           (workspace-wide package set + identity)
#   dcentos_am3_aml_common.fragment   (aarch64 + Linaro toolchain + cpio.gz)
#
# Sibling of dcentos_am3_s19kpro_defconfig — same Amlogic SoC, same boot
# chain, same S11board family (per reference_aml_s11board_unified.md), only
# product identity differs.

# =============================================================================
# Per-product identity.
# =============================================================================
BR2_TARGET_GENERIC_HOSTNAME="dcentos-s21"
BR2_TARGET_GENERIC_ISSUE="DCENTos for S21 (am3-aml NoPic) - D-Central Technologies"

# =============================================================================
# Overlay-on-overlay — shared amlogic overlay first, am3-s21 identity last.
# =============================================================================
BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_DCENTOS_PATH)/board/common/rootfs-overlay $(BR2_EXTERNAL_DCENTOS_PATH)/board/amlogic/rootfs-overlay $(BR2_EXTERNAL_DCENTOS_PATH)/board/amlogic/am3-s21/rootfs-overlay"
BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_DCENTOS_PATH)/board/amlogic/am3-s21/post-build.sh $(BR2_EXTERNAL_DCENTOS_PATH)/board/common/prune-runtime-research-tools.sh"
BR2_ROOTFS_POST_IMAGE_SCRIPT="$(BR2_EXTERNAL_DCENTOS_PATH)/board/amlogic/am3-s21/post-image.sh"
