| Line 3... |
Line 3... |
-- # ********************************************************************************************* #
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-- # ********************************************************************************************* #
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-- # Instruction and data bus interfaces and physical memory protection (PMP). #
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-- # Instruction and data bus interfaces and physical memory protection (PMP). #
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-- # ********************************************************************************************* #
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-- # ********************************************************************************************* #
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-- # BSD 3-Clause License #
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-- # BSD 3-Clause License #
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-- # #
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-- # #
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-- # Copyright (c) 2021, Stephan Nolting. All rights reserved. #
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-- # Copyright (c) 2022, Stephan Nolting. All rights reserved. #
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-- # #
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-- # #
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-- # Redistribution and use in source and binary forms, with or without modification, are #
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-- # Redistribution and use in source and binary forms, with or without modification, are #
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-- # permitted provided that the following conditions are met: #
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-- # permitted provided that the following conditions are met: #
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-- # #
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-- # #
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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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-- # 1. Redistributions of source code must retain the above copyright notice, this list of #
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| Line 319... |
Line 319... |
d_arbiter.err_bus <= '0';
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d_arbiter.err_bus <= '0';
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else -- in progress
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else -- in progress
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d_arbiter.err_align <= (d_arbiter.err_align or d_misaligned) and (not ctrl_i(ctrl_bus_derr_ack_c));
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d_arbiter.err_align <= (d_arbiter.err_align or d_misaligned) and (not ctrl_i(ctrl_bus_derr_ack_c));
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d_arbiter.err_bus <= (d_arbiter.err_bus or d_bus_err_i or (st_pmp_fault and d_arbiter.wr_req) or (ld_pmp_fault and d_arbiter.rd_req)) and
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d_arbiter.err_bus <= (d_arbiter.err_bus or d_bus_err_i or (st_pmp_fault and d_arbiter.wr_req) or (ld_pmp_fault and d_arbiter.rd_req)) and
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(not ctrl_i(ctrl_bus_derr_ack_c));
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(not ctrl_i(ctrl_bus_derr_ack_c));
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if (d_bus_ack_i = '1') or (ctrl_i(ctrl_bus_derr_ack_c) = '1') then -- wait for normal termination / CPU abort
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if ((d_bus_ack_i = '1') and (d_bus_err_i = '0')) or (ctrl_i(ctrl_bus_derr_ack_c) = '1') then -- wait for normal termination / CPU abort
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d_arbiter.wr_req <= '0';
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d_arbiter.wr_req <= '0';
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d_arbiter.rd_req <= '0';
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d_arbiter.rd_req <= '0';
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end if;
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end if;
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end if;
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end if;
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end if;
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end if;
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| Line 408... |
Line 408... |
i_arbiter.err_align <= i_misaligned;
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i_arbiter.err_align <= i_misaligned;
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i_arbiter.err_bus <= '0';
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i_arbiter.err_bus <= '0';
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else -- in progres
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else -- in progres
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i_arbiter.err_align <= (i_arbiter.err_align or i_misaligned) and (not ctrl_i(ctrl_bus_ierr_ack_c));
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i_arbiter.err_align <= (i_arbiter.err_align or i_misaligned) and (not ctrl_i(ctrl_bus_ierr_ack_c));
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i_arbiter.err_bus <= (i_arbiter.err_bus or i_bus_err_i or if_pmp_fault) and (not ctrl_i(ctrl_bus_ierr_ack_c));
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i_arbiter.err_bus <= (i_arbiter.err_bus or i_bus_err_i or if_pmp_fault) and (not ctrl_i(ctrl_bus_ierr_ack_c));
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if (i_bus_ack_i = '1') or (ctrl_i(ctrl_bus_ierr_ack_c) = '1') then -- wait for normal termination / CPU abort
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if ((i_bus_ack_i = '1') and (i_bus_err_i = '0')) or (ctrl_i(ctrl_bus_ierr_ack_c) = '1') then -- wait for normal termination / CPU abort
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i_arbiter.rd_req <= '0';
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i_arbiter.rd_req <= '0';
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end if;
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end if;
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end if;
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end if;
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end if;
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end if;
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end process ifetch_arbiter;
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end process ifetch_arbiter;
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