working st-term proof-of-concept. Period.

Signed-off-by: Andrew 'Necromant' Andrianov <andrew@ncrmnt.org>
pull/150/head
Andrew 'Necromant' Andrianov 2013-05-06 08:59:25 +04:00
rodzic 74138a7f93
commit d59be1f427
1 zmienionych plików z 135 dodań i 122 usunięć

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@ -1,4 +1,13 @@
#include <stdio.h>
/* According to POSIX.1-2001 */
#include <sys/select.h>
#include <string.h>
#include <sys/time.h>
#include <sys/types.h>
#include <unistd.h>
#include <termios.h>
#include <fcntl.h>
#include <signal.h>
#include "stlink-common.h"
#define STLINKY_MAGIC 0xDEADF00D
@ -9,20 +18,16 @@ struct stlinky {
size_t bufsize;
};
void dump_qbuf(stlink_t* s)
{
printf("== 0x%x\n", *(uint32_t*)s->q_buf);
}
/* Detects stlinky in RAM, returns handler */
struct stlinky* stlinky_detect(stlink_t* sl)
/* Detects stlinky in RAM, returns handler */
struct stlinky* stlinky_detect(stlink_t* sl)
{
static const uint32_t sram_base = 0x20000000;
static const uint32_t sram_base = 0x20000000;
struct stlinky* st = malloc(sizeof(struct stlinky));
st->sl = sl;
printf("sram: 0x%x bytes @ 0x%x\n", sl->sram_base, sl->sram_size);
uint32_t off;
for (off = 0; off < sl->sram_size; off += 4) {
uint32_t off;
for (off = 0; off < sl->sram_size; off += 4) {
stlink_read_mem32(sl, sram_base + off, 4);
if ( STLINKY_MAGIC== *(uint32_t*) sl->q_buf)
{
@ -30,13 +35,19 @@ struct stlinky* stlinky_detect(stlink_t* sl)
st->off = sram_base + off;
stlink_read_mem32(sl, st->off + 4, 4);
st->bufsize = (size_t) *(unsigned char*) sl->q_buf;
printf("stlinky buffer size 0x%zu (%hhx)\n", st->bufsize);
printf("stlinky buffer size 0x%zu\n", st->bufsize);
return st;
}
}
return NULL;
}
int stlinky_canrx(struct stlinky *st)
{
stlink_read_mem32(st->sl, st->off+4, 4);
unsigned char tx = (unsigned char) st->sl->q_buf[1];
return (int) tx;
}
size_t stlinky_rx(struct stlinky *st, char* buffer)
{
@ -47,128 +58,130 @@ size_t stlinky_rx(struct stlinky *st, char* buffer)
}
size_t rs = tx + (4 - (tx % 4)); /* voodoo */
stlink_read_mem32(st->sl, st->off+8, rs);
printf(st->sl->q_buf);
memcpy(buffer, st->sl->q_buf, (size_t) tx);
*st->sl->q_buf=0x0;
stlink_write_mem8(st->sl, st->off+5, 1);
return (size_t) tx;
}
size_t stlinky_tx(struct stlinky *st, char* buffer, size_t sz)
{
unsigned char rx = 1;
while(rx != 0) {
stlink_read_mem32(st->sl, st->off+4, 4);
rx = (unsigned char) st->sl->q_buf[2];
}
memcpy(st->sl->q_buf, buffer, sz);
size_t rs = sz + (4 - (sz % 4)); /* voodoo */
stlink_write_mem32(st->sl, st->off+8+st->bufsize, rs);
*st->sl->q_buf=(unsigned char) sz;
stlink_write_mem8(st->sl, st->off+6, 1);
return (size_t) rx;
}
int kbhit()
{
struct timeval tv;
fd_set fds;
tv.tv_sec = 0;
tv.tv_usec = 0;
FD_ZERO(&fds);
FD_SET(STDIN_FILENO, &fds); //STDIN_FILENO is 0
select(STDIN_FILENO+1, &fds, NULL, NULL, &tv);
return FD_ISSET(STDIN_FILENO, &fds);
}
void nonblock(int state)
{
struct termios ttystate;
//get the terminal state
tcgetattr(STDIN_FILENO, &ttystate);
if (state==1)
{
//turn off canonical mode
ttystate.c_lflag &= ~ICANON;
ttystate.c_lflag &= ~ECHO;
//minimum of number input read.
ttystate.c_cc[VMIN] = 1;
}
else if (state==0)
{
//turn on canonical mode
ttystate.c_lflag |= ICANON | ECHO;
}
//set the terminal attributes.
tcsetattr(STDIN_FILENO, TCSANOW, &ttystate);
}
static int keep_running = 1;
void cleanup(int dummy)
{
keep_running = 0;
printf("\n\nGot a signal - terminating\n");
}
int main(int ac, char** av) {
stlink_t* sl;
reg regs;
stlink_t* sl;
/* unused */
ac = ac;
av = av;
/* unused */
ac = ac;
av = av;
sl = stlink_open_usb(10);
if (sl != NULL) {
printf("ST-Linky proof-of-concept terminal :: Created by Necromant for lulz\n");
stlink_version(sl);
stlink_enter_swd_mode(sl);
printf("chip id: %#x\n", sl->chip_id);
printf("core_id: %#x\n", sl->core_id);
sl = stlink_open_usb(10);
if (sl != NULL) {
printf("ST Link terminal :: Created by Necromant\n");
stlink_version(sl);
printf("mode before doing anything: %d\n", stlink_current_mode(sl));
cortex_m3_cpuid_t cpuid;
stlink_cpu_id(sl, &cpuid);
printf("cpuid:impl_id = %0#x, variant = %#x\n", cpuid.implementer_id, cpuid.variant);
printf("cpuid:part = %#x, rev = %#x\n", cpuid.part, cpuid.revision);
if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
printf("-- exit_dfu_mode\n");
stlink_exit_dfu_mode(sl);
}
stlink_reset(sl);
stlink_force_debug(sl);
stlink_run(sl);
stlink_status(sl);
printf("-- enter_swd_mode\n");
stlink_enter_swd_mode(sl);
printf("-- mode after entering swd mode: %d\n", stlink_current_mode(sl));
/* wait for device to boot */
/* TODO: Make timeout adjustable via command line */
sleep(1);
printf("-- chip id: %#x\n", sl->chip_id);
printf("-- core_id: %#x\n", sl->core_id);
cortex_m3_cpuid_t cpuid;
stlink_cpu_id(sl, &cpuid);
printf("cpuid:impl_id = %0#x, variant = %#x\n", cpuid.implementer_id, cpuid.variant);
printf("cpuid:part = %#x, rev = %#x\n", cpuid.part, cpuid.revision);
stlink_reset(sl);
stlink_force_debug(sl);
stlink_run(sl);
stlink_status(sl);
/* wait for device to boot */
sleep(1);
struct stlinky *st = stlinky_detect(sl);
if (st == NULL)
{
printf("stlinky magic not found in sram :(");
struct stlinky *st = stlinky_detect(sl);
if (st == NULL)
{
printf("stlinky magic not found in sram :(");
}
char* rxbuf = malloc(st->bufsize);
char* txbuf = malloc(st->bufsize);
size_t tmp;
nonblock(1);
int fd = fileno(stdin);
int saved_flags = fcntl(fd, F_GETFL);
fcntl(fd, F_SETFL, saved_flags & ~O_NONBLOCK);
signal(SIGINT, cleanup);
printf("Entering interactive terminal. CTRL+C to exit\n");
while(1) {
if (stlinky_canrx(st)) {
tmp = stlinky_rx(st, rxbuf);
fwrite(rxbuf,tmp,1,stdout);
fflush(stdout);
}
if (kbhit()) {
tmp = read(fd, txbuf, st->bufsize);
stlinky_tx(st,txbuf,tmp);
}
if (!keep_running)
break;
}
nonblock(0);
stlink_exit_debug_mode(sl);
stlink_close(sl);
}
while(1) {
stlinky_rx(st, NULL);
}
//sleep(90);
printf("-- read_sram\n");
// static const uint32_t sram_base = 0x8000000;
// uint32_t off;
//for (off = 0; off < 16; off += 4)
// stlink_read_mem32(sl, sram_base + off, 4);
//printf("FP_CTRL\n");
//stlink_read_mem32(sl, CM3_REG_FP_CTRL, 4);
// no idea what reg this is.. */
// stlink_read_mem32(sl, 0xe000ed90, 4);
// no idea what register this is...
// stlink_read_mem32(sl, 0xe000edf0, 4);
// offset 0xC into TIM11 register? TIMx_DIER?
// stlink_read_mem32(sl, 0x4001100c, 4); */
/* Test 32 bit Write */
write_uint32(sl->q_buf,0x01234567);
stlink_write_mem32(sl,0x200000a8,4);
#if 0
write_uint32(sl->q_buf,0x89abcdef);
stlink_write_mem32(sl,0x200000ac, 4);
stlink_read_mem32(sl, 0x200000a8, 4);
stlink_read_mem32(sl, 0x200000ac, 4);
/* Test 8 bit write */
write_uint32(sl->q_buf,0x01234567);
stlink_write_mem8(sl,0x200001a8,3);
write_uint32(sl->q_buf,0x89abcdef);
stlink_write_mem8(sl, 0x200001ac, 3);
stlink_read_mem32(sl, 0x200001a8, 4);
stlink_read_mem32(sl, 0x200001ac, 4);
printf("-- status\n");
stlink_status(sl);
printf("-- reset\n");
stlink_reset(sl);
stlink_force_debug(sl);
/* Test reg write*/
stlink_write_reg(sl, 0x01234567, 3);
stlink_write_reg(sl, 0x89abcdef, 4);
stlink_write_reg(sl, 0x12345678, 15);
for (off = 0; off < 21; off += 1)
stlink_read_reg(sl, off, &regs);
stlink_read_all_regs(sl, &regs);
printf("-- status\n");
stlink_status(sl);
printf("-- step\n");
stlink_step(sl);
printf("-- run\n");
stlink_run(sl);
printf("-- exit_debug_mode\n");
#endif
stlink_exit_debug_mode(sl);
stlink_close(sl);
}
return 0;
return 0;
}