bsl: add support for raw USB access.
This commit is contained in:
Daniel Beer
parent
498ee0ff83
commit
ce64ff10b5
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@ -23,16 +23,19 @@
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#include <sys/stat.h>
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#include <unistd.h>
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#include "fet_proto.h"
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#include "bsl.h"
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#include "util.h"
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#include "output.h"
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#include "fet_error.h"
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#include "sport.h"
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#include "transport.h"
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#include "comport.h"
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#include "ti3410.h"
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struct bsl_device {
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struct device base;
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sport_t serial_fd;
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transport_t serial;
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uint8_t reply_buf[256];
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int reply_len;
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};
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@ -45,7 +48,7 @@ static int bsl_ack(struct bsl_device *dev)
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{
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uint8_t reply;
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if (sport_read(dev->serial_fd, &reply, 1) < 0) {
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if (dev->serial->ops->recv(dev->serial, &reply, 1) < 0) {
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printc_err("bsl: failed to receive reply\n");
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return -1;
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}
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@ -68,13 +71,14 @@ static int bsl_sync(struct bsl_device *dev)
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static const uint8_t c = DATA_HDR;
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int tries = 2;
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if (sport_flush(dev->serial_fd) < 0) {
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if (dev->serial->ops->flush(dev->serial) < 0) {
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pr_error("bsl: tcflush");
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return -1;
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}
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while (tries--)
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if (!(sport_write_all(dev->serial_fd, &c, 1) || bsl_ack(dev)))
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if (!(dev->serial->ops->send(dev->serial, &c, 1) ||
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bsl_ack(dev)))
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return 0;
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printc_err("bsl: sync failed\n");
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@ -116,7 +120,7 @@ static int send_command(struct bsl_device *dev,
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pktbuf[pktlen + 4] = cklow;
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pktbuf[pktlen + 5] = ckhigh;
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return sport_write_all(dev->serial_fd, pktbuf, pktlen + 6);
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return dev->serial->ops->send(dev->serial, pktbuf, pktlen + 6);
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}
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static int verify_checksum(struct bsl_device *dev)
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@ -144,10 +148,9 @@ static int fetch_reply(struct bsl_device *dev)
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dev->reply_len = 0;
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for (;;) {
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int r = sport_read(dev->serial_fd,
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dev->reply_buf + dev->reply_len,
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sizeof(dev->reply_buf) -
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dev->reply_len);
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int r = dev->serial->ops->recv(dev->serial,
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dev->reply_buf + dev->reply_len,
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sizeof(dev->reply_buf) - dev->reply_len);
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if (r < 0)
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return -1;
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@ -202,7 +205,7 @@ static void bsl_destroy(device_t dev_base)
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struct bsl_device *dev = (struct bsl_device *)dev_base;
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bsl_xfer(dev, CMD_RESET, 0, NULL, 0);
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sport_close(dev->serial_fd);
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dev->serial->ops->destroy(dev->serial);
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free(dev);
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}
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@ -331,27 +334,12 @@ static int bsl_erase(device_t dev_base, device_erase_type_t type,
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static int enter_via_fet(struct bsl_device *dev)
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{
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uint8_t buf[16];
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struct fet_proto proto;
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/* Enter bootloader command */
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if (sport_write_all(dev->serial_fd,
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(uint8_t *)"\x7e\x24\x01\x9d\x5a\x7e", 6)) {
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printc_err("bsl: couldn't write bootloader transition "
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"command\n");
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return -1;
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}
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fet_proto_init(&proto, dev->serial, 0);
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/* Wait for reply */
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if (sport_read_all(dev->serial_fd, buf, 8) < 0) {
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printc_err("bsl: couldn't read bootloader "
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"transition acknowledgement\n");
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return -1;
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}
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/* Check that it's what we expect */
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if (memcmp(buf, "\x06\x00\x24\x00\x00\x00\x61\x01", 8)) {
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printc_err("bsl: bootloader start returned error "
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"%d (%s)\n", buf[5], fet_error(buf[5]));
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if (fet_proto_xfer(&proto, 0x24, NULL, 0, 0) < 0) {
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printc_err("bsl: failed to enter bootloader\n");
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return -1;
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}
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@ -362,11 +350,6 @@ static device_t bsl_open(const struct device_args *args)
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{
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struct bsl_device *dev;
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if (!(args->flags & DEVICE_FLAG_TTY)) {
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printc_err("This driver does not support raw USB access.\n");
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return NULL;
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}
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dev = malloc(sizeof(*dev));
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if (!dev) {
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pr_error("bsl: can't allocate memory");
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@ -377,10 +360,12 @@ static device_t bsl_open(const struct device_args *args)
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dev->base.type = &device_bsl;
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dev->serial_fd = sport_open(args->path, 460800, 0);
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if (SPORT_ISERR(dev->serial_fd)) {
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printc_err("bsl: can't open %s: %s\n",
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args->path, last_error());
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if (args->flags & DEVICE_FLAG_TTY)
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dev->serial = comport_open(args->path, 460800);
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else
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dev->serial = ti3410_open(args->path, args->requested_serial);
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if (!dev->serial) {
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free(dev);
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return NULL;
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}
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@ -409,7 +394,7 @@ static device_t bsl_open(const struct device_args *args)
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return (device_t)dev;
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fail:
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sport_close(dev->serial_fd);
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dev->serial->ops->destroy(dev->serial);
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free(dev);
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return NULL;
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}
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@ -133,8 +133,6 @@ programming device itself.
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Currently, only memory read/write and erase are supported. CPU control
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via the bootloader is not possible.
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USB connection is not supported for this driver.
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.IP "\fBflash-bsl\fR"
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Connect to the built-in bootloader in MSP430 devices with flash bootloader
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memory. Devices with ROM bootloaders require another driver. Currently,
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