In the firmware/fpgas/aes/icestorm path, a problem about "make"

[HoulaiZhang]

I have configured the nextpnr environment, and can generate bin file when TOP=ss_ice40_aes_top, but when TOP=ss2_ice40_aes_top, the logical unit is insufficient. How can I solve this problem? All the files I used were Chipwhisperer-supplied, and I only changed the TOP. The following is the information in the pnr.log.

Info: constrained 'clk' to bel 'X12/Y31/io1'
Info: constrained 'IO3' to bel 'X4/Y31/io0'
Info: constrained 'IO4' to bel 'X19/Y31/io1'
Info: constrained 'TxD' to bel 'X5/Y0/io0'
Info: constrained 'RxD' to bel 'X6/Y0/io0'
Info: constrained 'clock_alive' to bel 'X13/Y0/io0'

Info: Packing constants..
Info: Packing IOs..
Info: Packing LUT-FFs..
Info: 3852 LCs used as LUT4 only
Info: 1215 LCs used as LUT4 and DFF
Info: Packing non-LUT FFs..
Info: 349 LCs used as DFF only
Info: Packing carries..
Info: 67 LCs used as CARRY only
Info: Packing indirect carry+LUT pairs...
Info: 50 LUTs merged into carry LCs
Info: Packing RAMs..
Info: Placing PLLs..
Info: Packing special functions..
Info: Packing PLLs..
Info: Promoting globals..
Info: promoting clk$SB_IO_IN (fanout 1566)
Info: promoting U_cw305_dut.aes_load [reset] (fanout 269)
Info: promoting ss2_reset [reset] (fanout 112)
Info: promoting U_cw305_dut.aes_core.ks_en_SB_DFF_Q_D_SB_LUT4_I2_O [cen] (fanout 136)
Info: promoting U_cw305_dut.aes_core.busy_o_SB_LUT4_I1_O [cen] (fanout 132)
Info: promoting U_cw305_dut.U_reg_aes.done_pulse [cen] (fanout 128)
Info: promoting U_cw305_dut.U_usb_reg_fe.usb_wrn_r_SB_LUT4_I2_1_O [cen] (fanout 128)
Info: Constraining chains...
Info: 36 LCs used to legalise carry chains.
Info: Checksum: 0xa9c8f6cb

Info: Annotating ports with timing budgets for target frequency 20.00 MHz
Info: Checksum: 0x349efbfa

Info: Device utilisation:
Info: ICESTORM_LC: 5471/ 5280 103%
Info: ICESTORM_RAM: 1/ 30 3%
Info: SB_IO: 6/ 96 6%
Info: SB_GB: 7/ 8 87%
Info: ICESTORM_PLL: 0/ 1 0%
Info: SB_WARMBOOT: 0/ 1 0%
Info: ICESTORM_DSP: 0/ 8 0%
Info: ICESTORM_HFOSC: 0/ 1 0%
Info: ICESTORM_LFOSC: 0/ 1 0%
Info: SB_I2C: 0/ 2 0%
Info: SB_SPI: 0/ 2 0%
Info: IO_I3C: 0/ 2 0%
Info: SB_LEDDA_IP: 0/ 1 0%
Info: SB_RGBA_DRV: 0/ 1 0%
Info: ICESTORM_SPRAM: 0/ 4 0%

Info: Placed 6 cells based on constraints.
Info: Creating initial analytic placement for 5205 cells, random placement wirelen = 142138.
Info: at initial placer iter 0, wirelen = 228
Info: at initial placer iter 1, wirelen = 219
Info: at initial placer iter 2, wirelen = 233
Info: at initial placer iter 3, wirelen = 204
Info: Running main analytical placer, max placement attempts per cell = 3760653.
ERROR: Failed to expand region (0, 0) |_> (25, 31) of 5471 ICESTORM_LCs
0 warnings, 1 error