e82328336e
This is simpler than JTAGVPI and is supported better by Verilor. It is also the same thing Spike uses.
60 lines
1.2 KiB
C++
60 lines
1.2 KiB
C++
// See LICENSE.Berkeley for license details.
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#ifndef REMOTE_BITBANG_H
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#define REMOTE_BITBANG_H
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#include <stdint.h>
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#include <sys/types.h>
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class remote_bitbang_t
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{
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public:
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// Create a new server, listening for connections from localhost on the given
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// port.
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remote_bitbang_t(uint16_t port);
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// Do a bit of work.
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void tick(unsigned char * jtag_tck,
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unsigned char * jtag_tms,
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unsigned char * jtag_tdi,
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unsigned char * jtag_trstn,
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unsigned char jtag_tdo);
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unsigned char done() {return quit;}
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int exit_code() {return err;}
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private:
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int err;
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unsigned char tck;
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unsigned char tms;
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unsigned char tdi;
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unsigned char trstn;
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unsigned char tdo;
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unsigned char quit;
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int socket_fd;
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int client_fd;
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static const ssize_t buf_size = 64 * 1024;
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char recv_buf[buf_size];
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ssize_t recv_start, recv_end;
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// Check for a client connecting, and accept if there is one.
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void accept();
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// Execute any commands the client has for us.
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// But we only execute 1 because we need time for the
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// simulation to run.
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void execute_command();
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// Reset. Currently does nothing.
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void reset();
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void set_pins(char _tck, char _tms, char _tdi);
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};
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#endif
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