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Line 118... |
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-- spi --
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-- spi --
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signal spi_data : std_ulogic;
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signal spi_data : std_ulogic;
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-- irq --
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-- irq --
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signal msi_ring, mei_ring : std_ulogic;
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signal msi_ring, mei_ring, nmi_ring : std_ulogic;
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signal soc_firq_ring : std_ulogic_vector(5 downto 0);
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signal soc_firq_ring : std_ulogic_vector(5 downto 0);
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-- Wishbone bus --
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-- Wishbone bus --
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type wishbone_t is record
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type wishbone_t is record
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addr : std_ulogic_vector(31 downto 0); -- address
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addr : std_ulogic_vector(31 downto 0); -- address
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| Line 207... |
Line 207... |
FAST_MUL_EN => false, -- use DSPs for M extension's multiplier
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FAST_MUL_EN => false, -- use DSPs for M extension's multiplier
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FAST_SHIFT_EN => false, -- use barrel shifter for shift operations
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FAST_SHIFT_EN => false, -- use barrel shifter for shift operations
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TINY_SHIFT_EN => false, -- use tiny (single-bit) shifter for shift operations
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TINY_SHIFT_EN => false, -- use tiny (single-bit) shifter for shift operations
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CPU_CNT_WIDTH => 64, -- total width of CPU cycle and instret counters (0..64)
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CPU_CNT_WIDTH => 64, -- total width of CPU cycle and instret counters (0..64)
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-- Physical Memory Protection (PMP) --
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-- Physical Memory Protection (PMP) --
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PMP_NUM_REGIONS => 4, -- number of regions (0..64)
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PMP_NUM_REGIONS => 5, -- number of regions (0..64)
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PMP_MIN_GRANULARITY => 64*1024, -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes
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PMP_MIN_GRANULARITY => 64*1024, -- minimal region granularity in bytes, has to be a power of 2, min 8 bytes
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-- Hardware Performance Monitors (HPM) --
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-- Hardware Performance Monitors (HPM) --
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HPM_NUM_CNTS => 12, -- number of inmplemnted HPM counters (0..29)
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HPM_NUM_CNTS => 12, -- number of implemented HPM counters (0..29)
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HPM_CNT_WIDTH => 40, -- total size of HPM counters (1..64)
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HPM_CNT_WIDTH => 40, -- total size of HPM counters (1..64)
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-- Internal Instruction memory --
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-- Internal Instruction memory --
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MEM_INT_IMEM_EN => int_imem_c , -- implement processor-internal instruction memory
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MEM_INT_IMEM_EN => int_imem_c , -- implement processor-internal instruction memory
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MEM_INT_IMEM_SIZE => imem_size_c, -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_SIZE => imem_size_c, -- size of processor-internal instruction memory in bytes
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MEM_INT_IMEM_ROM => false, -- implement processor-internal instruction memory as ROM
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MEM_INT_IMEM_ROM => false, -- implement processor-internal instruction memory as ROM
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Line 296... |
-- NeoPixel-compatible smart LED interface (available if IO_NEOLED_EN = true) --
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-- NeoPixel-compatible smart LED interface (available if IO_NEOLED_EN = true) --
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neoled_o => open, -- async serial data line
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neoled_o => open, -- async serial data line
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-- system time input from external MTIME (available if IO_MTIME_EN = false) --
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-- system time input from external MTIME (available if IO_MTIME_EN = false) --
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mtime_i => (others => '0'), -- current system time
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mtime_i => (others => '0'), -- current system time
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-- Interrupts --
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-- Interrupts --
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nm_irq_i => nmi_ring, -- non-maskable interrupt
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soc_firq_i => soc_firq_ring, -- fast interrupt channels
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soc_firq_i => soc_firq_ring, -- fast interrupt channels
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mtime_irq_i => '0', -- machine software interrupt, available if IO_MTIME_EN = false
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mtime_irq_i => '0', -- machine software interrupt, available if IO_MTIME_EN = false
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msw_irq_i => msi_ring, -- machine software interrupt
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msw_irq_i => msi_ring, -- machine software interrupt
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mext_irq_i => mei_ring -- machine external interrupt
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mext_irq_i => mei_ring -- machine external interrupt
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);
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);
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Line 595... |
-- bus interface --
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-- bus interface --
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wb_irq.rdata <= (others => '0');
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wb_irq.rdata <= (others => '0');
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wb_irq.ack <= wb_irq.cyc and wb_irq.stb and wb_irq.we and and_all_f(wb_irq.sel);
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wb_irq.ack <= wb_irq.cyc and wb_irq.stb and wb_irq.we and and_all_f(wb_irq.sel);
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wb_irq.err <= '0';
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wb_irq.err <= '0';
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-- trigger IRQ using CSR.MIE bit layout --
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-- trigger IRQ using CSR.MIE bit layout --
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nmi_ring <= '0';
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msi_ring <= '0';
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msi_ring <= '0';
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mei_ring <= '0';
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mei_ring <= '0';
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soc_firq_ring <= (others => '0');
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soc_firq_ring <= (others => '0');
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if ((wb_irq.cyc and wb_irq.stb and wb_irq.we and and_all_f(wb_irq.sel)) = '1') then
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if ((wb_irq.cyc and wb_irq.stb and wb_irq.we and and_all_f(wb_irq.sel)) = '1') then
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nmi_ring <= wb_irq.wdata(00); -- non-maskable interrupt
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msi_ring <= wb_irq.wdata(03); -- machine software interrupt
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msi_ring <= wb_irq.wdata(03); -- machine software interrupt
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mei_ring <= wb_irq.wdata(11); -- machine software interrupt
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mei_ring <= wb_irq.wdata(11); -- machine software interrupt
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--
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--
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soc_firq_ring(0) <= wb_irq.wdata(26); -- fast interrupt SoC channel 0 (-> FIRQ channel 10)
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soc_firq_ring(0) <= wb_irq.wdata(26); -- fast interrupt SoC channel 0 (-> FIRQ channel 10)
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soc_firq_ring(1) <= wb_irq.wdata(27); -- fast interrupt SoC channel 1 (-> FIRQ channel 11)
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soc_firq_ring(1) <= wb_irq.wdata(27); -- fast interrupt SoC channel 1 (-> FIRQ channel 11)
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