diff --git a/init/arch_specs/eessi_arch_riscv.spec b/init/arch_specs/eessi_arch_riscv.spec
index aa56fcaa8..c8985ce00 100644
--- a/init/arch_specs/eessi_arch_riscv.spec
+++ b/init/arch_specs/eessi_arch_riscv.spec
@@ -5,3 +5,4 @@
 "riscv64/sifive/p550"		"0x489"		"rv64imafdch_zicsr_zifencei_zba_zbb_sscofpmf"	# HiFive Premier P550
 "riscv64/spacemit/x60"		"0x710"		"rv64imafdcv_sscofpmf_sstc_svpbmt_zicbom_zicboz_zicbop_zihintpause"	# Banana Pi F3
 "riscv64/spacemit/x60-k6.6"	"0x710"		"rv64imafdcv_zicbom_zicboz_zicntr_zicond_zicsr_zifencei_zihintpause_zihpm_zfh_zfhmin_zca_zcd_zba_zbb_zbc_zbs_zkt_zve32f_zve32x_zve64d_zve64f_zve64x_zvfh_zvfhmin_zvkt_sscofpmf_sstc_svinval_svnapot_svpbmt"	# Banana Pi F3 k6.6
+"riscv64/spacemit/x100"		"0x710"		"rv64imafdcvh_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintntl_zihintpause_zihpm_zimop_zaamo_zalrsc_zawrs_zfa_zfh_zfhmin_zca_zcb_zcd_zcmop_zba_zbb_ze32x_zve64d_zve64f_zve64x_zvfh_zvfhmin_zvkb_zvkg_zvkned_zvknha_zvknhb_zvksed_zvksh_zvkt_smaia_smstateen_ssaia_sscofpmf_sstc_svinval_svnapot_svpbmt_sdtrig"	# Firefly AIBOX K3
diff --git a/tests/archdetect/riscv64/spacemit/fireflyk3.all.output b/tests/archdetect/riscv64/spacemit/fireflyk3.all.output
new file mode 100644
index 000000000..40764def1
--- /dev/null
+++ b/tests/archdetect/riscv64/spacemit/fireflyk3.all.output
@@ -0,0 +1 @@
+riscv64/spacemit/x100:riscv64/generic
diff --git a/tests/archdetect/riscv64/spacemit/fireflyk3.cpuinfo b/tests/archdetect/riscv64/spacemit/fireflyk3.cpuinfo
new file mode 100644
index 000000000..5f742ed86
--- /dev/null
+++ b/tests/archdetect/riscv64/spacemit/fireflyk3.cpuinfo
@@ -0,0 +1,9 @@
+processor       : 0
+hart            : 0
+model name      : Spacemit(R) X100
+isa             : rv64imafdcvh_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintntl_zihintpause_zihpm_zimop_zaamo_zalrsc_zawrs_zfa_zfh_zfhmin_zca_zcb_zcd_zcmop_zba_zbb_ze32x_zve64d_zve64f_zve64x_zvfh_zvfhmin_zvkb_zvkg_zvkned_zvknha_zvknhb_zvksed_zvksh_zvkt_smaia_smstateen_ssaia_sscofpmf_sstc_svinval_svnapot_svpbmt_sdtrig
+mmu             : sv39
+mvendorid       : 0x710
+marchid         : 0x8000000058000002
+mimpid          : 0x33d8a600
+hart isa        : rv64imafdcvh_zicbom_zicbop_zicboz_zicntr_zicond_zicsr_zifencei_zihintntl_zihintpause_zihpm_zimop_zaamo_zalrsc_zawrs_zfa_zfh_zfhmin_zca_zcb_zcd_zcmop_zba_zbb_ze32x_zve64d_zve64f_zve64x_zvfh_zvfhmin_zvkb_zvkg_zvkned_zvknha_zvknhb_zvksed_zvksh_zvkt_smaia_smstateen_ssaia_sscofpmf_sstc_svinval_svnapot_svpbmt_sdtrig
diff --git a/tests/archdetect/riscv64/spacemit/fireflyk3.output b/tests/archdetect/riscv64/spacemit/fireflyk3.output
new file mode 100644
index 000000000..d6213dabe
--- /dev/null
+++ b/tests/archdetect/riscv64/spacemit/fireflyk3.output
@@ -0,0 +1 @@
+riscv64/spacemit/x100