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clean up a bit

This commit is contained in:
Triss 2021-08-02 01:05:07 +02:00
parent 19c317f305
commit 071a67b39c
2 changed files with 41 additions and 52 deletions
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14
host/dmctl/commands.py
View File

@ -173,6 +173,20 @@ def jtag_scan(dev: DmjDevice, typ: str, start_pin: int, end_pin: int) -> int:
matches = None
if typ == 'jtag':
matches = dev.m3_jtagscan_get_result_jtag(nmatches)
mat_good, mat_maybe = [], []
for e in matches:
(mat_good if e.ntoggle == 0 else mat_maybe).append(e)
print("Certain matches:")
for i in range(len(mat_good)):
print("% 2d\t%s" % (i+1, str(mat_good[i])))
print("\nPossible matches:")
for i in range(len(mat_maybe)):
print("% 2d\t%s" % (i+1+len(mat_good), str(mat_maybe[i])))
return 0
elif typ == 'swd':
matches = dev.m3_jtagscan_get_result_swd(nmatches)
else:

79
src/m_jscan/jscan.c
View File

@ -109,16 +109,13 @@ void jscan_task(void) {
/// JTAG TIME /////////////////////////////////////////////////////////////////
// TODO: generate randomly? also use long ints instead of strings
#define PATTERN_MATCH_LEN 64
#define PATTERN_CMP_LEN 34
static const char PATTERN[PATTERN_MATCH_LEN] = "0110011101001101101000010111001001";
//static const uint64_t PATTERN = 0xf6c27bd50cec641eULL; // 0b1111011011000010011110111101010100001100111011000110010000011110
/*#define PATTERN_MATCH_LEN 64
#define PATTERN_MATCH_LEN 64
#define PATTERN_CMP_LEN 32
static const uint32_t PATTERN = 0x7bd50cec; // 01111011110101010000110011101100*/
static const uint32_t PATTERN = 0x7bd50cec; // 01111011110101010000110011101100
#define TAP_SHIFTIR /*0x3ec*//*0x0df*/"1111101100"
/*#define TAP_SHIFTIR_LEN 10*/
#define TAP_SHIFTIR 0x0df
#define TAP_SHIFTIR_LEN 10
static void init_pins(uint8_t tck, uint8_t tms, uint8_t tdi, uint8_t ntrst) {
for (int i = startpin; i <= endpin; ++i) {
@ -134,15 +131,12 @@ static void init_pins(uint8_t tck, uint8_t tms, uint8_t tdi, uint8_t ntrst) {
}
}
static void tap_state(const char* /*uint32_t*/ state, /*size_t tslen,*/ uint8_t tck, uint8_t tms) {
size_t tslen=strlen(state);
static void tap_state(uint32_t state, size_t tslen, uint8_t tck, uint8_t tms) {
for (size_t i = 0; i < tslen; ++i) {
jscan_delay_half_clk();
jscan_delay_half_clk();
jscan_pin_set(tck, 0);
jscan_pin_set(tms, state[i] - '0');
//printf("tapstate %c\n", state[i]);
//jscan_pin_set(tms, (state >> (/*tslen-1 -*/ i)) & 1);
jscan_pin_set(tms, (state >> i) & 1);
jscan_delay_half_clk();
jscan_pin_set(tck, 1);
}
@ -155,47 +149,37 @@ static void pulse_tdi(int tck, int tdi, int s_tdi) {
}
jscan_delay_half_clk();
jscan_pin_set(tdi, s_tdi);
//printf("set tdi %d\n", s_tdi);
if (tck != 0xff) {
jscan_delay_half_clk();
jscan_pin_set(tck, 1);
}
}
static size_t check_data(/*uint64_t*/const char* pattern, size_t iterations, uint8_t tck, uint8_t tdi, uint8_t tdo, size_t* reg_len) {
static size_t check_data(uint64_t pattern, size_t iterations, uint8_t tck, uint8_t tdi, uint8_t tdo, size_t* reg_len) {
size_t w = 0;
size_t plen = /*PATTERN_CMP_LEN;*/strlen(pattern);
char tdo_read, tdo_prev;
int tdo_read, tdo_prev;
size_t nr_toggle = 0;
//uint64_t rcv = 0;
char rcv[PATTERN_MATCH_LEN];
uint64_t rcv = 0;
tdo_prev = '0' + (jscan_pin_get(tdo) ? 1 : 0);
tdo_prev = jscan_pin_get(tdo) ? 1 : 0;
for (size_t i = 0; i < iterations; ++i) {
pulse_tdi(tck, tdi, /*(pattern >> w) & 1*/pattern[w] - '0');
pulse_tdi(tck, tdi, (pattern >> w) & 1);
++w;
if (!pattern[w]/*w == PATTERN_CMP_LEN*/) w = 0;
if (w == PATTERN_CMP_LEN) w = 0;
tdo_read = '0' + (jscan_pin_get(tdo) ? 1 : 0);
//printf("get tdo %c\n", tdo_read);
tdo_read = jscan_pin_get(tdo) ? 1 : 0;
if (tdo_read != tdo_prev) ++nr_toggle;
tdo_prev = tdo_read;
if (i < plen/*PATTERN_CMP_LEN*/) rcv[i] = tdo_read;
else {
memmove(rcv, rcv + 1, plen/*PATTERN_CMP_LEN*/ - 1);
rcv[plen/*PATTERN_CMP_LEN*/ - 1] = tdo_read;
}
//rcv = (rcv >> 1) | ((uint64_t)tdo_read << (PATTERN_MATCH_LEN-1))//(rcv << 1) | tdo_read;
rcv = (rcv >> 1) | ((uint64_t)tdo_read << (PATTERN_MATCH_LEN-1));
if (i >= plen/*PATTERN_CMP_LEN*/ - 1) {
//if (pattern == ((rcv >> (PATTERN_MATCH_LEN - PATTERN_CMP_LEN)) & (1uLL << PATTERN_CMP_LEN) - 1))
if (!memcmp(pattern, rcv, plen/*PATTERN_CMP_LEN*/))
if (i >= PATTERN_CMP_LEN - 1) {
if (pattern == ((rcv >> (PATTERN_MATCH_LEN - PATTERN_CMP_LEN)) & ((1uLL << PATTERN_CMP_LEN) - 1)))
{
*reg_len = i + 1 - plen/*PATTERN_CMP_LEN*/;
*reg_len = i + 1 - PATTERN_CMP_LEN;
return 1;
}
}
@ -226,11 +210,11 @@ static void scan_jtag(void) {
if (tdi == tdo) continue;
init_pins(tck, tms, tdi, ntrst);
tap_state(TAP_SHIFTIR/*, TAP_SHIFTIR_LEN*/, tck, tms);
tap_state(TAP_SHIFTIR, TAP_SHIFTIR_LEN, tck, tms);
size_t reg_len;
size_t ret = check_data(PATTERN, 2*PATTERN_MATCH_LEN, tck, tdi, tdo, &reg_len);
printf("tck=%hhu tms=%hhu tdi=%hhu tdo=%hhu ntrst=%hhu , ret=%zu rlen=%zu\n",
tck, tms, tdi, tdo, ntrst, ret, reg_len);
/*printf("tck=%hhu tms=%hhu tdi=%hhu tdo=%hhu ntrst=%hhu , ret=%zu rlen=%zu\n",
tck, tms, tdi, tdo, ntrst, ret, reg_len);*/
if (ret == 0) {
YIELD_AND_CHECK_IF_STOPPED();
continue;
@ -283,7 +267,6 @@ static void pulse_clk(uint8_t swclk) {
}
static void reset_line(uint8_t swclk, uint8_t swdio) {
//printf("rstl\n");
jscan_pin_set(swdio, 1);
for (int i = 0; i < RESET_SEQUENCE_LENGTH; ++i) {
pulse_clk(swclk);
@ -291,9 +274,8 @@ static void reset_line(uint8_t swclk, uint8_t swdio) {
}
static void write_bits(uint8_t swclk, uint8_t swdio, uint32_t val, int len) {
for (int i = 0; i < len; ++i, val >>= 1) {
jscan_pin_set(swdio, (val /*>> i*/) & 1);
//printf("wb#%d %lu\n", i, (val /*>> i*/) & 1);
for (int i = 0; i < len; ++i) {
jscan_pin_set(swdio, (val >> i) & 1);
pulse_clk(swclk);
}
}
@ -301,26 +283,23 @@ static void write_bits(uint8_t swclk, uint8_t swdio, uint32_t val, int len) {
static uint32_t read_bits(uint8_t swclk, uint8_t swdio, int len) {
uint32_t val = 0;
jscan_pin_mode(swdio, 0); //setup_m_read();
jscan_pin_mode(swdio, 0);
for (int i = 0; i < len; ++i) {
uint32_t bit = jscan_pin_get(swdio) ? 1 : 0;
//printf("rb#%d %lu\n", i, bit);
val |= bit << i;
pulse_clk(swclk);
}
jscan_pin_mode(swdio, 1); //setup_m_write();
jscan_pin_mode(swdio, 1);
return val;
}
inline static uint32_t get_ack(uint32_t val) { return val & 0x7; }
/*inline static uint32_t get_manuf(uint32_t val) { return (val >> 1) & 0x7ff; }
inline static uint32_t get_partno(uint32_t val) { return (val >> 12) & 0xffff; }*/
static void turn_around(uint8_t swclk, uint8_t swdio) {
jscan_pin_mode(swdio, 0); //setup_m_read();
jscan_pin_mode(swdio, 0);
pulse_clk(swclk);
}
@ -337,13 +316,12 @@ static uint32_t read_id_code(uint8_t swclk, uint8_t swdio, uint32_t* retv) {
uint32_t ret = read_bits(swclk, swdio, 4); // ack stuff, + 1bit of ID code
*retv = read_bits(swclk, swdio, 32);
turn_around(swclk, swdio);
jscan_pin_mode(swdio, 1); //setup_m_write();
jscan_pin_mode(swdio, 1);
write_bits(swclk, swdio, 0x00, 8);
return ret;
}
static bool test_swd_lines(uint8_t swclk, uint8_t swdio, uint32_t* idcode) {
//set_pins(swclk, swdio); // saves pins to globals
init_pins(swclk, swdio, 0xff, 0xff);
switch_jtag_to_swd(swclk, swdio);
uint32_t readbuf2;
@ -351,7 +329,7 @@ static bool test_swd_lines(uint8_t swclk, uint8_t swdio, uint32_t* idcode) {
init_pins(0xff, 0xff, 0xff, 0xff);
bool result = get_ack(readbuf) == 1;
uint32_t swd_idcode = ((readbuf >> 3) & 1) | (readbuf2 << 1);
printf("swclk=%hhu swdio=%hhu -> %08lx\n", swclk, swdio, swd_idcode);
//printf("swclk=%hhu swdio=%hhu -> %08lx\n", swclk, swdio, swd_idcode);
if (result) *idcode = swd_idcode;
else *idcode = 0;
return result;
@ -360,9 +338,6 @@ static bool test_swd_lines(uint8_t swclk, uint8_t swdio, uint32_t* idcode) {
static void scan_swd(void) {
init_pins(0xff, 0xff, 0xff, 0xff);
/*uint16_t manuf, part;
test_swd_lines(startpin, startpin+1, &manuf, &part);*/
for (uint8_t swclk = startpin; swclk <= endpin; ++swclk) {
if (!jscan_pin_get(swclk)) continue;
for (uint8_t swdio = startpin; swdio <= endpin; ++swdio) {