URL https://opencores.org/ocsvn/s6soc/s6soc/trunk

Subversion Repositories s6soc

[/] [s6soc/] [trunk/] [bench/] [cpp/] [zip_sim.cpp] - Blame information for rev 15

Go to most recent revision | Details | Compare with Previous | View Log


////////////////////////////////////////////////////////////////////////////////
//
// Filename:    zip_sim.cpp
//
// Project:     CMod S6 System on a Chip, ZipCPU demonstration project
//
// Purpose:     This provides a simulation capability for the CMod S6 SoC.
//
// Creator:     Dan Gisselquist, Ph.D.
//              Gisselquist Technology, LLC
//
////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2015-2016, Gisselquist Technology, LLC
//
// This program is free software (firmware): you can redistribute it and/or
// modify it under the terms of  the GNU General Public License as published
// by the Free Software Foundation, either version 3 of the License, or (at
// your option) any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or
// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program.  (It's in the $(ROOT)/doc directory, run make with no
// target there if the PDF file isn't present.)  If not, see
// <http://www.gnu.org/licenses/> for a copy.
//
// License:     GPL, v3, as defined and found on www.gnu.org,
//              http://www.gnu.org/licenses/gpl.html
//
//
////////////////////////////////////////////////////////////////////////////////
//
//
#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <signal.h>
#include <time.h>
#include <unistd.h>
#include <stdint.h>
 
#include "verilated.h"
#include "Vbusmaster.h"
 
#include "regdefs.h"
#include "testb.h"
// #include "twoc.h"
#include "qspiflashsim.h"
#include "uartsim.h"
 
typedef uint32_t        BUSW;
 
class   GPIOSIM {
public:
        unsigned operator()(const unsigned o_gpio) { return 0; }
};
 
class   KEYPADSIM {
public:
        unsigned operator()(const unsigned o_kpd) { return 0; }
};
 
// Add a reset line, since Vbusmaster doesn't have one
class   Vbusmasterr : public Vbusmaster {
public:
        int     i_rst;
};
 
// No particular "parameters" need definition or redefinition here.
class   ZIPSIM_TB : public TESTB<Vbusmasterr> {
public:
        QSPIFLASHSIM    m_flash;
        UARTSIM         m_uart;
        GPIOSIM         m_gpio;
        KEYPADSIM       m_keypad;
        unsigned        m_last_led;
        time_t          m_start_time;
 
        ZIPSIM_TB(void) : m_uart(0x2b6) {
                m_start_time = time(NULL);
        }
 
        void    reset(void) {
                m_flash.debug(false);
        }
 
        void    tick(void) {
                if ((m_tickcount & ((1<<28)-1))==0) {
                        double  ticks_per_second = m_tickcount;
                        time_t  nsecs = (time(NULL)-m_start_time);
                        if (nsecs > 0) {
                                ticks_per_second /= (double)nsecs;
                                printf(" ********   %.6f TICKS PER SECOND\n",
                                        ticks_per_second);
                        }
                }
 
                // Set up the bus before any clock tick
 
                // We've got the flash to deal with ...
                m_core->i_qspi_dat = m_flash(m_core->o_qspi_cs_n,
                                                m_core->o_qspi_sck,
                                                m_core->o_qspi_dat);
 
                // And the GPIO lines
                m_core->i_gpio = m_gpio(m_core->o_gpio);
 
                m_core->i_btn = 0; // 2'b0
                // o_led, o_pwm, o_pwm_aux
 
                // And the keypad
                m_core->i_kp_row = m_keypad(m_core->o_kp_col);
 
                // And the UART
                m_core->i_rx_stb  = m_uart.rx(m_core->i_rx_data);
                m_core->i_tx_busy = m_uart.tx(m_core->o_tx_stb, m_core->o_tx_data);
 
                TESTB<Vbusmasterr>::tick();
 
                if (m_core->o_led != m_last_led) {
                        printf("LED: %08x\n", m_core->o_led);
                        m_last_led = m_core->o_led;
                }
 
                /*
                printf("PC: %08x:%08x [%08x:%08x:%08x:%08x:%08x],%08x,%08x,%d,%08x,%08x (%x,%x)\n",
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__ipc,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__upc,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[0],
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[1],
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[2],
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[3],
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[15],
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__r_I,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opB,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__w_dcdR_pc,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opA,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__wr_reg_vl,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__w_iflags,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__w_iflags,
                        m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_pc
                        );
                if (m_core->v__DOT__wb_cyc) {
                printf("WB: %s/%s/%s[@0x%08x] %08x ->%s/%s %08x\n",
                        (m_core->v__DOT__wb_cyc)?"CYC":"   ",
                        (m_core->v__DOT__wb_stb)?"STB":"   ",
                        (m_core->v__DOT__wb_we )?"WE ":"   ",
                        (m_core->v__DOT__w_zip_addr),
                        (m_core->v__DOT__wb_data),
                        (m_core->v__DOT__wb_ack)?"ACK":"   ",
                        (m_core->v__DOT__wb_stall)?"STL":"   ",
                        (m_core->v__DOT__wb_idata)
                        );
                }
 
                if (m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_valid)
                        printf("PC: %08x - %08x, uart=%d,%d, pic = %d,%04x,%0d,%04x\n",
                                m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_pc,
                                m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction,
                                m_core->i_rx_stb, m_core->i_tx_busy,
                                m_core->v__DOT__pic__DOT__r_gie,
                                m_core->v__DOT__pic__DOT__r_int_enable,
                                m_core->v__DOT__pic__DOT__r_any,
                                m_core->v__DOT__pic__DOT__r_int_state);
                */
 
                printf("%08x\n", m_core->v__DOT__zipt_a__DOT__r_value);
        }
};
 
ZIPSIM_TB       *tb;
 
bool    iself(const char *fname) {
        FILE    *fp;
        bool    ret = true;
 
        if ((!fname)||(!fname[0]))
                return false;
 
        fp = fopen(fname, "rb");
 
        if (!fp)        return false;
        if (0x7f != fgetc(fp))  ret = false;
        if ('E'  != fgetc(fp))  ret = false;
        if ('L'  != fgetc(fp))  ret = false;
        if ('F'  != fgetc(fp))  ret = false;
        fclose(fp);
        return  ret;
}
 
long    fgetwords(FILE *fp) {
        // Return the number of words in the current file, and return the 
        // file as though it had never been adjusted
        long    fpos, flen;
        fpos = ftell(fp);
        if (0 != fseek(fp, 0l, SEEK_END)) {
                fprintf(stderr, "ERR: Could not determine file size\n");
                perror("O/S Err:");
                exit(-2);
        } flen = ftell(fp);
        if (0 != fseek(fp, fpos, SEEK_SET)) {
                fprintf(stderr, "ERR: Could not seek on file\n");
                perror("O/S Err:");
                exit(-2);
        } flen /= sizeof(BUSW);
        return flen;
}
 
class   SECTION {
public:
        unsigned        m_start, m_len;
        BUSW    m_data[1];
};
 
SECTION **singlesection(int nwords) {
        fprintf(stderr, "NWORDS = %d\n", nwords);
        size_t  sz = (2*(sizeof(SECTION)+sizeof(SECTION *))
                +(nwords-1)*(sizeof(BUSW)));
        char    *d = (char *)malloc(sz);
        SECTION **r = (SECTION **)d;
        memset(r, 0, sz);
        r[0] = (SECTION *)(&d[2*sizeof(SECTION *)]);
        r[0]->m_len   = nwords;
        r[1] = (SECTION *)(&r[0]->m_data[r[0]->m_len]);
        r[0]->m_start = 0;
        r[1]->m_start = 0;
        r[1]->m_len   = 0;
 
        return r;
}
 
SECTION **rawsection(const char *fname) {
        SECTION         **secpp, *secp;
        unsigned        num_words;
        FILE            *fp;
        int             nr;
 
        fp = fopen(fname, "r");
        if (fp == NULL) {
                fprintf(stderr, "Could not open: %s\n", fname);
                exit(-1);
        }
 
        if ((num_words=fgetwords(fp)) > FLASHWORDS) {
                fprintf(stderr, "File overruns flash memory\n");
                exit(-1);
        }
        secpp = singlesection(num_words);
        secp = secpp[0];
        secp->m_start = RESET_ADDRESS;
        secp->m_len = num_words;
        nr= fread(secp->m_data, sizeof(BUSW), num_words, fp);
        if (nr != (int)num_words) {
                fprintf(stderr, "Could not read entire file\n");
                perror("O/S Err:");
                exit(-2);
        } assert(secpp[1]->m_len == 0);
 
        return secpp;
}
 
unsigned        byteswap(unsigned n) {
        unsigned        r;
 
        r = (n&0x0ff); n>>= 8;
        r = (r<<8) | (n&0x0ff); n>>= 8;
        r = (r<<8) | (n&0x0ff); n>>= 8;
        r = (r<<8) | (n&0x0ff); n>>= 8;
 
        return r;
}
 
#include <libelf.h>
#include <gelf.h>
 
void    elfread(const char *fname, unsigned &entry, SECTION **&sections) {
        Elf     *e;
        int     fd, i;
        size_t  n;
        char    *id;
        Elf_Kind        ek;
        GElf_Ehdr       ehdr;
        GElf_Phdr       phdr;
        const   bool    dbg = false;
 
        if (elf_version(EV_CURRENT) == EV_NONE) {
                fprintf(stderr, "ELF library initialization err, %s\n", elf_errmsg(-1));
                perror("O/S Err:");
                exit(EXIT_FAILURE);
        } if ((fd = open(fname, O_RDONLY, 0)) < 0) {
                fprintf(stderr, "Could not open %s\n", fname);
                perror("O/S Err:");
                exit(EXIT_FAILURE);
        } if ((e = elf_begin(fd, ELF_C_READ, NULL))==NULL) {
                fprintf(stderr, "Could not run elf_begin, %s\n", elf_errmsg(-1));
                exit(EXIT_FAILURE);
        }
 
        ek = elf_kind(e);
        if (ek == ELF_K_ELF) {
                ; // This is the kind of file we should expect
        } else if (ek == ELF_K_AR) {
                fprintf(stderr, "Cannot run an archive!\n");
                exit(EXIT_FAILURE);
        } else if (ek == ELF_K_NONE) {
                ;
        } else {
                fprintf(stderr, "Unexpected ELF file kind!\n");
                exit(EXIT_FAILURE);
        }
 
        if (gelf_getehdr(e, &ehdr) == NULL) {
                fprintf(stderr, "getehdr() failed: %s\n", elf_errmsg(-1));
                exit(EXIT_FAILURE);
        } if ((i=gelf_getclass(e)) == ELFCLASSNONE) {
                fprintf(stderr, "getclass() failed: %s\n", elf_errmsg(-1));
                exit(EXIT_FAILURE);
        } if ((id = elf_getident(e, NULL)) == NULL) {
                fprintf(stderr, "getident() failed: %s\n", elf_errmsg(-1));
                exit(EXIT_FAILURE);
        } if (i != ELFCLASS32) {
                fprintf(stderr, "This is a 64-bit ELF file, ZipCPU ELF files are all 32-bit\n");
                exit(EXIT_FAILURE);
        }
 
        if (dbg) {
        printf("    %-20s 0x%jx\n", "e_type", (uintmax_t)ehdr.e_type);
        printf("    %-20s 0x%jx\n", "e_machine", (uintmax_t)ehdr.e_machine);
        printf("    %-20s 0x%jx\n", "e_version", (uintmax_t)ehdr.e_version);
        printf("    %-20s 0x%jx\n", "e_entry", (uintmax_t)ehdr.e_entry);
        printf("    %-20s 0x%jx\n", "e_phoff", (uintmax_t)ehdr.e_phoff);
        printf("    %-20s 0x%jx\n", "e_shoff", (uintmax_t)ehdr.e_shoff);
        printf("    %-20s 0x%jx\n", "e_flags", (uintmax_t)ehdr.e_flags);
        printf("    %-20s 0x%jx\n", "e_ehsize", (uintmax_t)ehdr.e_ehsize);
        printf("    %-20s 0x%jx\n", "e_phentsize", (uintmax_t)ehdr.e_phentsize);
        printf("    %-20s 0x%jx\n", "e_shentsize", (uintmax_t)ehdr.e_shentsize);
        printf("\n");
        }
 
 
        // Check whether or not this is an ELF file for the ZipCPU ...
        if (ehdr.e_machine != 0x0dadd) {
                fprintf(stderr, "This is not a ZipCPU ELF file\n");
                exit(EXIT_FAILURE);
        }
 
        // Get our entry address
        entry = ehdr.e_entry;
 
 
        // Now, let's go look at the program header
        if (elf_getphdrnum(e, &n) != 0) {
                fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1));
                exit(EXIT_FAILURE);
        }
 
        unsigned total_octets = 0, current_offset=0, current_section=0;
        for(i=0; i<(int)n; i++) {
                total_octets += sizeof(SECTION *)+sizeof(SECTION);
 
                if (gelf_getphdr(e, i, &phdr) != &phdr) {
                        fprintf(stderr, "getphdr() failed: %s\n", elf_errmsg(-1));
                        exit(EXIT_FAILURE);
                }
 
                if (dbg) {
                printf("    %-20s 0x%x\n", "p_type",   phdr.p_type);
                printf("    %-20s 0x%jx\n", "p_offset", phdr.p_offset);
                printf("    %-20s 0x%jx\n", "p_vaddr",  phdr.p_vaddr);
                printf("    %-20s 0x%jx\n", "p_paddr",  phdr.p_paddr);
                printf("    %-20s 0x%jx\n", "p_filesz", phdr.p_filesz);
                printf("    %-20s 0x%jx\n", "p_memsz",  phdr.p_memsz);
                printf("    %-20s 0x%x [", "p_flags",  phdr.p_flags);
 
                if (phdr.p_flags & PF_X)        printf(" Execute");
                if (phdr.p_flags & PF_R)        printf(" Read");
                if (phdr.p_flags & PF_W)        printf(" Write");
                printf("]\n");
                printf("    %-20s 0x%jx\n", "p_align", phdr.p_align);
                }
 
                total_octets += phdr.p_memsz;
        }
 
        char    *d = (char *)malloc(total_octets + sizeof(SECTION)+sizeof(SECTION *));
        memset(d, 0, total_octets);
 
        SECTION **r = sections = (SECTION **)d;
        current_offset = (n+1)*sizeof(SECTION *);
        current_section = 0;
 
        for(i=0; i<(int)n; i++) {
                r[i] = (SECTION *)(&d[current_offset]);
 
                if (gelf_getphdr(e, i, &phdr) != &phdr) {
                        fprintf(stderr, "getphdr() failed: %s\n", elf_errmsg(-1));
                        exit(EXIT_FAILURE);
                }
 
                if (dbg) {
                printf("    %-20s 0x%jx\n", "p_offset", phdr.p_offset);
                printf("    %-20s 0x%jx\n", "p_vaddr",  phdr.p_vaddr);
                printf("    %-20s 0x%jx\n", "p_paddr",  phdr.p_paddr);
                printf("    %-20s 0x%jx\n", "p_filesz", phdr.p_filesz);
                printf("    %-20s 0x%jx\n", "p_memsz",  phdr.p_memsz);
                printf("    %-20s 0x%x [", "p_flags",  phdr.p_flags);
 
                if (phdr.p_flags & PF_X)        printf(" Execute");
                if (phdr.p_flags & PF_R)        printf(" Read");
                if (phdr.p_flags & PF_W)        printf(" Write");
                printf("]\n");
 
                printf("    %-20s 0x%jx\n", "p_align", phdr.p_align);
                }
 
                current_section++;
 
                r[i]->m_start = phdr.p_vaddr;
                r[i]->m_len   = phdr.p_filesz/ sizeof(BUSW);
 
                current_offset += phdr.p_memsz + sizeof(SECTION);
 
                // Now, let's read in our section ...
                if (lseek(fd, phdr.p_offset, SEEK_SET) < 0) {
                        fprintf(stderr, "Could not seek to file position %08lx\n", phdr.p_offset);
                        perror("O/S Err:");
                        exit(EXIT_FAILURE);
                } if (phdr.p_filesz > phdr.p_memsz)
                        phdr.p_filesz = 0;
                if (read(fd, r[i]->m_data, phdr.p_filesz) != (int)phdr.p_filesz) {
                        fprintf(stderr, "Didnt read entire section\n");
                        perror("O/S Err:");
                        exit(EXIT_FAILURE);
                }
 
                // Next, we need to byte swap it from big to little endian
                for(unsigned j=0; j<r[i]->m_len; j++)
                        r[i]->m_data[j] = byteswap(r[i]->m_data[j]);
 
                if (dbg) for(unsigned j=0; j<r[i]->m_len; j++)
                        fprintf(stderr, "ADR[%04x] = %08x\n", r[i]->m_start+j,
                        r[i]->m_data[j]);
        }
 
        r[i] = (SECTION *)(&d[current_offset]);
        r[current_section]->m_start = 0;
        r[current_section]->m_len   = 0;
 
        elf_end(e);
        close(fd);
}
 
 
void    usage(void) {
        fprintf(stderr, "Usage: zip_sim flash_program\n");
}
 
int     main(int argc, char **argv) {
        Verilated::commandArgs(argc, argv);
        tb = new ZIPSIM_TB;
        const char      *codef = NULL;
 
        for(int argn=1; argn<argc; argn++) {
                if (argv[argn][0] == '-') {
                        usage();
                        exit(-1);
                } else
                        codef = argv[argn];
        }
 
        if ((!codef)||(!codef[0]))
                fprintf(stderr, "No executable code filename found!\n");
 
        if (access(codef, R_OK)!=0)
                fprintf(stderr, "Cannot read code filename, %s\n", codef);
 
        if (iself(codef)) {
                SECTION **secpp, *secp;
                BUSW    entry;
                elfread(codef, entry, secpp);
 
                for(int i=0; secpp[i]->m_len; i++) {
                        secp = secpp[i];
                        tb->m_flash.write(secp->m_start, secp->m_len, secp->m_data);
                }
        } else {
                tb->m_flash.load(RESET_ADDRESS, codef);
        }
 
        tb->reset();
 
        while(1)
                tb->tick();
 
        printf("SUCCESS!\n");
        exit(0);
}

Line No.	Rev	Author	Line
1	10	dgisselq	`////////////////////////////////////////////////////////////////////////////////`
2	2	dgisselq	`//`
3	10	dgisselq	`// Filename: zip_sim.cpp`
4	2	dgisselq	`//`
5	10	dgisselq	`// Project: CMod S6 System on a Chip, ZipCPU demonstration project`
6	2	dgisselq	`//`
7	10	dgisselq	`// Purpose: This provides a simulation capability for the CMod S6 SoC.`
8	2	dgisselq	`//`
9	10	dgisselq	`// Creator: Dan Gisselquist, Ph.D.`
10			`// Gisselquist Technology, LLC`
11	2	dgisselq	`//`
12	10	dgisselq	`////////////////////////////////////////////////////////////////////////////////`
13	2	dgisselq	`//`
14	10	dgisselq	`// Copyright (C) 2015-2016, Gisselquist Technology, LLC`
15	2	dgisselq	`//`
16	10	dgisselq	`// This program is free software (firmware): you can redistribute it and/or`
17			`// modify it under the terms of the GNU General Public License as published`
18			`// by the Free Software Foundation, either version 3 of the License, or (at`
19			`// your option) any later version.`
20	2	dgisselq	`//`
21	10	dgisselq	`// This program is distributed in the hope that it will be useful, but WITHOUT`
22			`// ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY or`
23			`// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License`
24			`// for more details.`
25			`//`
26			`// You should have received a copy of the GNU General Public License along`
27			`// with this program. (It's in the $(ROOT)/doc directory, run make with no`
28			`// target there if the PDF file isn't present.) If not, see`
29			`// <http://www.gnu.org/licenses/> for a copy.`
30			`//`
31			`// License: GPL, v3, as defined and found on www.gnu.org,`
32			`// http://www.gnu.org/licenses/gpl.html`
33			`//`
34			`//`
35			`////////////////////////////////////////////////////////////////////////////////`
36			`//`
37			`//`
38	2	dgisselq	`#include <stdio.h>`
39			`#include <sys/types.h>`
40			`#include <sys/stat.h>`
41			`#include <fcntl.h>`
42			`#include <signal.h>`
43			`#include <time.h>`
44			`#include <unistd.h>`
45	10	dgisselq	`#include <stdint.h>`
46	2	dgisselq
47			`#include "verilated.h"`
48			`#include "Vbusmaster.h"`
49
50	10	dgisselq	`#include "regdefs.h"`
51	2	dgisselq	`#include "testb.h"`
52			`// #include "twoc.h"`
53			`#include "qspiflashsim.h"`
54			`#include "uartsim.h"`
55
56	10	dgisselq	`typedef uint32_t BUSW;`
57
58	2	dgisselq	`class GPIOSIM {`
59			`public:`
60			`unsigned operator()(const unsigned o_gpio) { return 0; }`
61			`};`
62
63			`class KEYPADSIM {`
64			`public:`
65			`unsigned operator()(const unsigned o_kpd) { return 0; }`
66			`};`
67
68			`// Add a reset line, since Vbusmaster doesn't have one`
69			`class Vbusmasterr : public Vbusmaster {`
70			`public:`
71			`int i_rst;`
72			`};`
73
74			`// No particular "parameters" need definition or redefinition here.`
75			`class ZIPSIM_TB : public TESTB<Vbusmasterr> {`
76			`public:`
77			`QSPIFLASHSIM m_flash;`
78			`UARTSIM m_uart;`
79			`GPIOSIM m_gpio;`
80			`KEYPADSIM m_keypad;`
81			`unsigned m_last_led;`
82			`time_t m_start_time;`
83
84			`ZIPSIM_TB(void) : m_uart(0x2b6) {`
85			`m_start_time = time(NULL);`
86			`}`
87
88			`void reset(void) {`
89			`m_flash.debug(false);`
90			`}`
91
92			`void tick(void) {`
93			`if ((m_tickcount & ((1<<28)-1))==0) {`
94			`double ticks_per_second = m_tickcount;`
95			`time_t nsecs = (time(NULL)-m_start_time);`
96			`if (nsecs > 0) {`
97			`ticks_per_second /= (double)nsecs;`
98			`printf(" ******** %.6f TICKS PER SECOND\n",`
99			`ticks_per_second);`
100			`}`
101			`}`
102
103			`// Set up the bus before any clock tick`
104
105			`// We've got the flash to deal with ...`
106			`m_core->i_qspi_dat = m_flash(m_core->o_qspi_cs_n,`
107			`m_core->o_qspi_sck,`
108			`m_core->o_qspi_dat);`
109
110			`// And the GPIO lines`
111			`m_core->i_gpio = m_gpio(m_core->o_gpio);`
112
113			`m_core->i_btn = 0; // 2'b0`
114			`// o_led, o_pwm, o_pwm_aux`
115
116			`// And the keypad`
117			`m_core->i_kp_row = m_keypad(m_core->o_kp_col);`
118
119			`// And the UART`
120			`m_core->i_rx_stb = m_uart.rx(m_core->i_rx_data);`
121			`m_core->i_tx_busy = m_uart.tx(m_core->o_tx_stb, m_core->o_tx_data);`
122
123			`TESTB<Vbusmasterr>::tick();`
124
125			`if (m_core->o_led != m_last_led) {`
126			`printf("LED: %08x\n", m_core->o_led);`
127	10	dgisselq	`m_last_led = m_core->o_led;`
128	2	dgisselq	`}`
129
130			`/*`
131	10	dgisselq	`printf("PC: %08x:%08x [%08x:%08x:%08x:%08x:%08x],%08x,%08x,%d,%08x,%08x (%x,%x)\n",`
132	2	dgisselq	`m_core->v__DOT__thecpu__DOT__thecpu__DOT__ipc,`
133			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__upc,`
134			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[0],`
135			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[1],`
136			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[2],`
137			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[3],`
138			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__regset[15],`
139			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__r_I,`
140			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opB,`
141			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_decoder__DOT__w_dcdR_pc,`
142			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__r_opA,`
143	10	dgisselq	`m_core->v__DOT__thecpu__DOT__thecpu__DOT__wr_reg_vl,`
144			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__w_iflags,`
145			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__w_iflags,`
146			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_pc`
147			`);`
148			`if (m_core->v__DOT__wb_cyc) {`
149			`printf("WB: %s/%s/%s[@0x%08x] %08x ->%s/%s %08x\n",`
150			`(m_core->v__DOT__wb_cyc)?"CYC":" ",`
151			`(m_core->v__DOT__wb_stb)?"STB":" ",`
152			`(m_core->v__DOT__wb_we )?"WE ":" ",`
153			`(m_core->v__DOT__w_zip_addr),`
154			`(m_core->v__DOT__wb_data),`
155			`(m_core->v__DOT__wb_ack)?"ACK":" ",`
156			`(m_core->v__DOT__wb_stall)?"STL":" ",`
157			`(m_core->v__DOT__wb_idata)`
158			`);`
159			`}`
160	2	dgisselq
161			`if (m_core->v__DOT__thecpu__DOT__thecpu__DOT__pf_valid)`
162			`printf("PC: %08x - %08x, uart=%d,%d, pic = %d,%04x,%0d,%04x\n",`
163			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction_pc,`
164			`m_core->v__DOT__thecpu__DOT__thecpu__DOT__instruction,`
165			`m_core->i_rx_stb, m_core->i_tx_busy,`
166			`m_core->v__DOT__pic__DOT__r_gie,`
167			`m_core->v__DOT__pic__DOT__r_int_enable,`
168			`m_core->v__DOT__pic__DOT__r_any,`
169			`m_core->v__DOT__pic__DOT__r_int_state);`
170			`*/`
171	10	dgisselq
172			`printf("%08x\n", m_core->v__DOT__zipt_a__DOT__r_value);`
173	2	dgisselq	`}`
174			`};`
175
176			`ZIPSIM_TB *tb;`
177
178			`bool iself(const char *fname) {`
179			`FILE *fp;`
180			`bool ret = true;`
181
182	10	dgisselq	`if ((!fname)\|\|(!fname[0]))`
183	2	dgisselq	`return false;`
184
185	10	dgisselq	`fp = fopen(fname, "rb");`
186
187			`if (!fp) return false;`
188			`if (0x7f != fgetc(fp)) ret = false;`
189			`if ('E' != fgetc(fp)) ret = false;`
190			`if ('L' != fgetc(fp)) ret = false;`
191			`if ('F' != fgetc(fp)) ret = false;`
192	2	dgisselq	`fclose(fp);`
193	10	dgisselq	`return ret;`
194	2	dgisselq	`}`
195
196	10	dgisselq	`long fgetwords(FILE *fp) {`
197			`// Return the number of words in the current file, and return the`
198			`// file as though it had never been adjusted`
199			`long fpos, flen;`
200			`fpos = ftell(fp);`
201			`if (0 != fseek(fp, 0l, SEEK_END)) {`
202			`fprintf(stderr, "ERR: Could not determine file size\n");`
203			`perror("O/S Err:");`
204			`exit(-2);`
205			`} flen = ftell(fp);`
206			`if (0 != fseek(fp, fpos, SEEK_SET)) {`
207			`fprintf(stderr, "ERR: Could not seek on file\n");`
208			`perror("O/S Err:");`
209			`exit(-2);`
210			`} flen /= sizeof(BUSW);`
211			`return flen;`
212			`}`
213
214			`class SECTION {`
215			`public:`
216			`unsigned m_start, m_len;`
217			`BUSW m_data[1];`
218			`};`
219
220			`SECTION **singlesection(int nwords) {`
221			`fprintf(stderr, "NWORDS = %d\n", nwords);`
222			`size_t sz = (2(sizeof(SECTION)+sizeof(SECTION ))`
223			`+(nwords-1)*(sizeof(BUSW)));`
224			`char d = (char )malloc(sz);`
225			`SECTION r = (SECTION )d;`
226			`memset(r, 0, sz);`
227			`r[0] = (SECTION )(&d[2sizeof(SECTION *)]);`
228			`r[0]->m_len = nwords;`
229			`r[1] = (SECTION *)(&r[0]->m_data[r[0]->m_len]);`
230			`r[0]->m_start = 0;`
231			`r[1]->m_start = 0;`
232			`r[1]->m_len = 0;`
233
234			`return r;`
235			`}`
236
237			`SECTION *rawsection(const char fname) {`
238			`SECTION *secpp, secp;`
239			`unsigned num_words;`
240			`FILE *fp;`
241			`int nr;`
242
243			`fp = fopen(fname, "r");`
244			`if (fp == NULL) {`
245			`fprintf(stderr, "Could not open: %s\n", fname);`
246			`exit(-1);`
247			`}`
248
249			`if ((num_words=fgetwords(fp)) > FLASHWORDS) {`
250			`fprintf(stderr, "File overruns flash memory\n");`
251			`exit(-1);`
252			`}`
253			`secpp = singlesection(num_words);`
254			`secp = secpp[0];`
255			`secp->m_start = RESET_ADDRESS;`
256			`secp->m_len = num_words;`
257			`nr= fread(secp->m_data, sizeof(BUSW), num_words, fp);`
258			`if (nr != (int)num_words) {`
259			`fprintf(stderr, "Could not read entire file\n");`
260			`perror("O/S Err:");`
261			`exit(-2);`
262			`} assert(secpp[1]->m_len == 0);`
263
264			`return secpp;`
265			`}`
266
267			`unsigned byteswap(unsigned n) {`
268			`unsigned r;`
269
270			`r = (n&0x0ff); n>>= 8;`
271			`r = (r<<8) \| (n&0x0ff); n>>= 8;`
272			`r = (r<<8) \| (n&0x0ff); n>>= 8;`
273			`r = (r<<8) \| (n&0x0ff); n>>= 8;`
274
275			`return r;`
276			`}`
277
278			`#include <libelf.h>`
279			`#include <gelf.h>`
280
281			`void elfread(const char fname, unsigned &entry, SECTION *&sections) {`
282			`Elf *e;`
283			`int fd, i;`
284			`size_t n;`
285			`char *id;`
286			`Elf_Kind ek;`
287			`GElf_Ehdr ehdr;`
288			`GElf_Phdr phdr;`
289			`const bool dbg = false;`
290
291			`if (elf_version(EV_CURRENT) == EV_NONE) {`
292			`fprintf(stderr, "ELF library initialization err, %s\n", elf_errmsg(-1));`
293			`perror("O/S Err:");`
294			`exit(EXIT_FAILURE);`
295			`} if ((fd = open(fname, O_RDONLY, 0)) < 0) {`
296			`fprintf(stderr, "Could not open %s\n", fname);`
297			`perror("O/S Err:");`
298			`exit(EXIT_FAILURE);`
299			`} if ((e = elf_begin(fd, ELF_C_READ, NULL))==NULL) {`
300			`fprintf(stderr, "Could not run elf_begin, %s\n", elf_errmsg(-1));`
301			`exit(EXIT_FAILURE);`
302			`}`
303
304			`ek = elf_kind(e);`
305			`if (ek == ELF_K_ELF) {`
306			`; // This is the kind of file we should expect`
307			`} else if (ek == ELF_K_AR) {`
308			`fprintf(stderr, "Cannot run an archive!\n");`
309			`exit(EXIT_FAILURE);`
310			`} else if (ek == ELF_K_NONE) {`
311			`;`
312			`} else {`
313			`fprintf(stderr, "Unexpected ELF file kind!\n");`
314			`exit(EXIT_FAILURE);`
315			`}`
316
317			`if (gelf_getehdr(e, &ehdr) == NULL) {`
318			`fprintf(stderr, "getehdr() failed: %s\n", elf_errmsg(-1));`
319			`exit(EXIT_FAILURE);`
320			`} if ((i=gelf_getclass(e)) == ELFCLASSNONE) {`
321			`fprintf(stderr, "getclass() failed: %s\n", elf_errmsg(-1));`
322			`exit(EXIT_FAILURE);`
323			`} if ((id = elf_getident(e, NULL)) == NULL) {`
324			`fprintf(stderr, "getident() failed: %s\n", elf_errmsg(-1));`
325			`exit(EXIT_FAILURE);`
326			`} if (i != ELFCLASS32) {`
327			`fprintf(stderr, "This is a 64-bit ELF file, ZipCPU ELF files are all 32-bit\n");`
328			`exit(EXIT_FAILURE);`
329			`}`
330
331			`if (dbg) {`
332			`printf(" %-20s 0x%jx\n", "e_type", (uintmax_t)ehdr.e_type);`
333			`printf(" %-20s 0x%jx\n", "e_machine", (uintmax_t)ehdr.e_machine);`
334			`printf(" %-20s 0x%jx\n", "e_version", (uintmax_t)ehdr.e_version);`
335			`printf(" %-20s 0x%jx\n", "e_entry", (uintmax_t)ehdr.e_entry);`
336			`printf(" %-20s 0x%jx\n", "e_phoff", (uintmax_t)ehdr.e_phoff);`
337			`printf(" %-20s 0x%jx\n", "e_shoff", (uintmax_t)ehdr.e_shoff);`
338			`printf(" %-20s 0x%jx\n", "e_flags", (uintmax_t)ehdr.e_flags);`
339			`printf(" %-20s 0x%jx\n", "e_ehsize", (uintmax_t)ehdr.e_ehsize);`
340			`printf(" %-20s 0x%jx\n", "e_phentsize", (uintmax_t)ehdr.e_phentsize);`
341			`printf(" %-20s 0x%jx\n", "e_shentsize", (uintmax_t)ehdr.e_shentsize);`
342			`printf("\n");`
343			`}`
344
345
346			`// Check whether or not this is an ELF file for the ZipCPU ...`
347			`if (ehdr.e_machine != 0x0dadd) {`
348			`fprintf(stderr, "This is not a ZipCPU ELF file\n");`
349			`exit(EXIT_FAILURE);`
350			`}`
351
352			`// Get our entry address`
353			`entry = ehdr.e_entry;`
354
355
356			`// Now, let's go look at the program header`
357			`if (elf_getphdrnum(e, &n) != 0) {`
358			`fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1));`
359			`exit(EXIT_FAILURE);`
360			`}`
361
362			`unsigned total_octets = 0, current_offset=0, current_section=0;`
363			`for(i=0; i<(int)n; i++) {`
364			`total_octets += sizeof(SECTION *)+sizeof(SECTION);`
365
366			`if (gelf_getphdr(e, i, &phdr) != &phdr) {`
367			`fprintf(stderr, "getphdr() failed: %s\n", elf_errmsg(-1));`
368			`exit(EXIT_FAILURE);`
369			`}`
370
371			`if (dbg) {`
372			`printf(" %-20s 0x%x\n", "p_type", phdr.p_type);`
373			`printf(" %-20s 0x%jx\n", "p_offset", phdr.p_offset);`
374			`printf(" %-20s 0x%jx\n", "p_vaddr", phdr.p_vaddr);`
375			`printf(" %-20s 0x%jx\n", "p_paddr", phdr.p_paddr);`
376			`printf(" %-20s 0x%jx\n", "p_filesz", phdr.p_filesz);`
377			`printf(" %-20s 0x%jx\n", "p_memsz", phdr.p_memsz);`
378			`printf(" %-20s 0x%x [", "p_flags", phdr.p_flags);`
379
380			`if (phdr.p_flags & PF_X) printf(" Execute");`
381			`if (phdr.p_flags & PF_R) printf(" Read");`
382			`if (phdr.p_flags & PF_W) printf(" Write");`
383			`printf("]\n");`
384			`printf(" %-20s 0x%jx\n", "p_align", phdr.p_align);`
385			`}`
386
387			`total_octets += phdr.p_memsz;`
388			`}`
389
390			`char d = (char )malloc(total_octets + sizeof(SECTION)+sizeof(SECTION *));`
391			`memset(d, 0, total_octets);`
392
393			`SECTION r = sections = (SECTION )d;`
394			`current_offset = (n+1)sizeof(SECTION );`
395			`current_section = 0;`
396
397			`for(i=0; i<(int)n; i++) {`
398			`r[i] = (SECTION *)(&d[current_offset]);`
399
400			`if (gelf_getphdr(e, i, &phdr) != &phdr) {`
401			`fprintf(stderr, "getphdr() failed: %s\n", elf_errmsg(-1));`
402			`exit(EXIT_FAILURE);`
403			`}`
404
405			`if (dbg) {`
406			`printf(" %-20s 0x%jx\n", "p_offset", phdr.p_offset);`
407			`printf(" %-20s 0x%jx\n", "p_vaddr", phdr.p_vaddr);`
408			`printf(" %-20s 0x%jx\n", "p_paddr", phdr.p_paddr);`
409			`printf(" %-20s 0x%jx\n", "p_filesz", phdr.p_filesz);`
410			`printf(" %-20s 0x%jx\n", "p_memsz", phdr.p_memsz);`
411			`printf(" %-20s 0x%x [", "p_flags", phdr.p_flags);`
412
413			`if (phdr.p_flags & PF_X) printf(" Execute");`
414			`if (phdr.p_flags & PF_R) printf(" Read");`
415			`if (phdr.p_flags & PF_W) printf(" Write");`
416			`printf("]\n");`
417
418			`printf(" %-20s 0x%jx\n", "p_align", phdr.p_align);`
419			`}`
420
421			`current_section++;`
422
423			`r[i]->m_start = phdr.p_vaddr;`
424			`r[i]->m_len = phdr.p_filesz/ sizeof(BUSW);`
425
426			`current_offset += phdr.p_memsz + sizeof(SECTION);`
427
428			`// Now, let's read in our section ...`
429			`if (lseek(fd, phdr.p_offset, SEEK_SET) < 0) {`
430			`fprintf(stderr, "Could not seek to file position %08lx\n", phdr.p_offset);`
431			`perror("O/S Err:");`
432			`exit(EXIT_FAILURE);`
433			`} if (phdr.p_filesz > phdr.p_memsz)`
434			`phdr.p_filesz = 0;`
435			`if (read(fd, r[i]->m_data, phdr.p_filesz) != (int)phdr.p_filesz) {`
436			`fprintf(stderr, "Didnt read entire section\n");`
437			`perror("O/S Err:");`
438			`exit(EXIT_FAILURE);`
439			`}`
440
441			`// Next, we need to byte swap it from big to little endian`
442			`for(unsigned j=0; j<r[i]->m_len; j++)`
443			`r[i]->m_data[j] = byteswap(r[i]->m_data[j]);`
444
445			`if (dbg) for(unsigned j=0; j<r[i]->m_len; j++)`
446			`fprintf(stderr, "ADR[%04x] = %08x\n", r[i]->m_start+j,`
447			`r[i]->m_data[j]);`
448			`}`
449
450			`r[i] = (SECTION *)(&d[current_offset]);`
451			`r[current_section]->m_start = 0;`
452			`r[current_section]->m_len = 0;`
453
454			`elf_end(e);`
455			`close(fd);`
456			`}`
457
458
459	2	dgisselq	`void usage(void) {`
460			`fprintf(stderr, "Usage: zip_sim flash_program\n");`
461			`}`
462
463			`int main(int argc, char **argv) {`
464			`Verilated::commandArgs(argc, argv);`
465			`tb = new ZIPSIM_TB;`
466			`const char *codef = NULL;`
467
468			`for(int argn=1; argn<argc; argn++) {`
469			`if (argv[argn][0] == '-') {`
470			`usage();`
471			`exit(-1);`
472			`} else`
473			`codef = argv[argn];`
474			`}`
475
476			`if ((!codef)\|\|(!codef[0]))`
477			`fprintf(stderr, "No executable code filename found!\n");`
478
479			`if (access(codef, R_OK)!=0)`
480			`fprintf(stderr, "Cannot read code filename, %s\n", codef);`
481
482			`if (iself(codef)) {`
483	10	dgisselq	`SECTION *secpp, secp;`
484			`BUSW entry;`
485			`elfread(codef, entry, secpp);`
486	2	dgisselq
487	10	dgisselq	`for(int i=0; secpp[i]->m_len; i++) {`
488			`secp = secpp[i];`
489			`tb->m_flash.write(secp->m_start, secp->m_len, secp->m_data);`
490	2	dgisselq	`}`
491			`} else {`
492	10	dgisselq	`tb->m_flash.load(RESET_ADDRESS, codef);`
493	2	dgisselq	`}`
494
495			`tb->reset();`
496
497			`while(1)`
498			`tb->tick();`
499
500			`printf("SUCCESS!\n");`

Browse

Tools

Subversion Repositories s6soc

[/] [s6soc/] [trunk/] [bench/] [cpp/] [zip_sim.cpp] - Blame information for rev 15