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Initial commit for jtag3 TPI support. Can read signature on ATtiny104 XPlained mini, but nothing else yet.

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This commit is contained in:
Jan Egil Ruud
2022-11-21 21:18:13 +01:00
parent 13e0bd030f
commit 10ccf0f515
7 changed files with 284 additions and 49 deletions
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212
src/jtag3.c
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@@ -89,6 +89,7 @@ struct pdata
#define PGM_FL_IS_JTAG (0x0004)
#define PGM_FL_IS_EDBG (0x0008)
#define PGM_FL_IS_UPDI (0x0010)
#define PGM_FL_IS_TPI (0x0020)
static int jtag3_open(PROGRAMMER *pgm, const char *port);
static int jtag3_edbg_prepare(const PROGRAMMER *pgm);
@@ -2513,6 +2514,187 @@ static unsigned int jtag3_memaddr(const PROGRAMMER *pgm, const AVRPART *p, const
return addr;
}
/*
* Send the data as a JTAGICE3 encapsulated TPI packet.
*/
static int jtag3_send_tpi(const PROGRAMMER *pgm, unsigned char *data, size_t len) {
unsigned char *cmdbuf;
int rv;
if ((cmdbuf = malloc(len + 1)) == NULL) {
pmsg_error("out of memory for command packet\n");
exit(1);
}
cmdbuf[0] = SCOPE_AVR_TPI;
memcpy(cmdbuf + 1, data, len);
msg_trace("STK500V2: jtag3_send_tpi(");
for (size_t i=0; i<len+1; i++)
msg_trace("0x%02x ", cmdbuf[i]);
msg_trace(", %d)\n", (int) len);
rv = jtag3_send(pgm, cmdbuf, len + 1);
free(cmdbuf);
return rv;
}
int jtag3_recv_tpi(const PROGRAMMER *pgm, unsigned char *resp) {
int rv;
unsigned char *tpimsg;
rv = jtag3_recv(pgm, &tpimsg);
if (rv <= 0) {
pmsg_error("unable to receive\n");
return -1;
}
msg_trace("STK500V2: jtag3_recv_tpi(");
for (size_t i=0; i<rv; i++)
msg_trace("0x%02x ", tpimsg[i]);
msg_trace(", %d)\n", (int) rv);
memcpy(resp, tpimsg + 1, rv - 1);
free(tpimsg);
return resp[1];
}
/*
* initialize the AVR device and prepare it to accept commands
*/
static int jtag3_initialize_tpi(const PROGRAMMER *pgm, const AVRPART *p) {
unsigned char cmdbuf[4];
unsigned char resp[4];
// AVRMEM * m;
pmsg_info("jtag3_initialize_tpi() start\n");
cmdbuf[0] = XPRG_CMD_ENTER_PROGMODE;
if (jtag3_send_tpi(pgm, cmdbuf, 1) < 0) {
pmsg_error("XPRG_CMD_ENTER_PROGMODE failed\n");
return -1;
}
jtag3_recv_tpi(pgm, resp);
cmdbuf[0] = XPRG_CMD_SET_PARAM;
cmdbuf[1] = XPRG_PARAM_NVMCMD_ADDR;
cmdbuf[2] = 0x33; // NVMCMD address
if (jtag3_send_tpi(pgm, cmdbuf, 3) < 0) {
pmsg_error("Set NVMCMD address failed\n");
return -1;
}
jtag3_recv_tpi(pgm, resp);
cmdbuf[0] = XPRG_CMD_SET_PARAM;
cmdbuf[1] = XPRG_PARAM_NVMCSR_ADDR;
cmdbuf[2] = 0x32; // NVMCSR address
if (jtag3_send_tpi(pgm, cmdbuf, 3) < 0) {
pmsg_error("Set NVMCSR address failed\n");
return -1;
}
jtag3_recv_tpi(pgm, resp);
return 0;
}
static void jtag3_enable_tpi(PROGRAMMER *pgm, const AVRPART *p) {
pmsg_notice2("jtag3_enable_tpi() is empty. No action necessary.\n");
}
static void jtag3_disable_tpi(const PROGRAMMER *pgm) {
unsigned char cmdbuf[4];
int result;
cmdbuf[0] = XPRG_CMD_LEAVE_PROGMODE;
if (jtag3_send_tpi(pgm, cmdbuf, 1) < 0) {
pmsg_error("XPRG_CMD_LEAVE_PROGMODE failed\n");
return;
}
jtag3_recv_tpi(pgm, cmdbuf);
}
static int jtag3_read_byte_tpi(const PROGRAMMER *pgm, const AVRPART *p, const AVRMEM *mem,
unsigned long addr, unsigned char * value)
{
int result, pollidx;
unsigned char buf[8];
unsigned long paddr = 0UL, *paddr_ptr = NULL;
unsigned int pagesize = 0;
unsigned char *cache_ptr = NULL;
OPCODE *op;
size_t len = 8;
pmsg_notice2("jtag3_read_byte_tpi(.., %s, 0x%lx, ...)\n", mem->desc, addr);
buf[0] = XPRG_CMD_READ_MEM;
if (strcmp(mem->desc, "lfuse") == 0 ||
strcmp(mem->desc, "fuse") == 0) {
buf[1] = XPRG_MEM_TYPE_FUSE;
addr = 0;
} else if (strcmp(mem->desc, "hfuse") == 0) {
buf[1] = XPRG_MEM_TYPE_FUSE;
addr = 1;
} else if (strcmp(mem->desc, "efuse") == 0) {
buf[1] = XPRG_MEM_TYPE_FUSE;
addr = 2;
} else if (strcmp(mem->desc, "lock") == 0) {
buf[1] = XPRG_MEM_TYPE_LOCKBITS;
paddr = 0x3F00 + addr;
} else if (strcmp(mem->desc, "calibration") == 0) {
buf[1] = XPRG_MEM_TYPE_LOCKBITS;
paddr = 0x3F80 + addr;
} else if (strcmp(mem->desc, "signature") == 0) {
buf[1] = XPRG_MEM_TYPE_LOCKBITS;
paddr = 0x3FC0 + addr;
}
buf[2] = (paddr>>24) & 0xFF;
buf[3] = (paddr>>16) & 0xFF;
buf[4] = (paddr>>8) & 0xFF;
buf[5] = paddr & 0xFF;
buf[6] = 0; // Length MSB
buf[7] = 1; // Length LSB, 1 since we are reading only one byte
if (jtag3_send_tpi(pgm, buf, len) < 0)
return -1;
result = jtag3_recv_tpi(pgm, buf);
if (result < 0) {
pmsg_error("timeout/error communicating with programmer\n");
return -1;
}
*value = buf[2];
return 0;
}
static int jtag3_chip_erase_tpi(const PROGRAMMER *pgm, const AVRPART *p) {
pmsg_error("jtag3_chip_erase_tpi() not implemented\n");
return -1;
}
static int jtag3_open_tpi(PROGRAMMER *pgm, const char *port) {
pmsg_notice2("jtag3_open_tpi()\n");
if (jtag3_open_common(pgm, port) < 0)
return -1;
return 0;
}
void jtag3_close_tpi(PROGRAMMER *pgm) {
pmsg_notice2("jtag3_close_tpi() is empty. No action necessary.\n");
}
const char jtag3_desc[] = "Atmel JTAGICE3";
@@ -2677,3 +2859,33 @@ void jtag3_updi_initpgm(PROGRAMMER *pgm) {
}
}
const char jtag3_tpi_desc[] = "Atmel JTAGICE3 in TPI mode";
void jtag3_tpi_initpgm(PROGRAMMER *pgm) {
strcpy(pgm->type, "JTAGICE3_TPI");
/*
* mandatory functions
*/
pgm->initialize = jtag3_initialize_tpi;
pgm->display = jtag3_display;
pgm->enable = jtag3_enable_tpi;
pgm->disable = jtag3_disable_tpi;
pgm->program_enable = jtag3_program_enable_dummy;
pgm->chip_erase = jtag3_chip_erase_tpi;
pgm->open = jtag3_open_tpi;
pgm->close = jtag3_close_tpi;
pgm->read_byte = jtag3_read_byte_tpi;
pgm->write_byte = jtag3_write_byte;
/*
* optional functions
*/
pgm->paged_write = jtag3_paged_write;
pgm->paged_load = jtag3_paged_load;
pgm->print_parms = jtag3_print_parms;
pgm->setup = jtag3_setup;
pgm->teardown = jtag3_teardown;
pgm->page_size = 256;
pgm->flag = PGM_FL_IS_TPI;
}