aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorMarc Schink <flashrom-dev@marcschink.de>2016-03-17 16:23:03 +0100
committerMarc Schink <jaylink-dev@marcschink.de>2017-06-23 17:30:23 +0200
commit65e33ea8e79d1cbc93fbfefa033690cc96440763 (patch)
tree5e7a6ee45e6c8a4ed630b0b68abe7712724c427d
parent86f2552c06690880bf2ebab1d6bb84627557adfd (diff)
Add initial J-Link SPI programmerjlink
Tested with SEGGER J-Link EDU, Flasher ARM and flash chip W25Q16.V. Change-Id: Ie03a054a75457ec9e1cab36ea124bb53b10e8d7e Signed-off-by: Marc Schink <flashrom-dev@marcschink.de>
-rw-r--r--Makefile57
-rw-r--r--README1
-rw-r--r--flashrom.8.tmpl59
-rw-r--r--flashrom.c12
-rw-r--r--jlink_spi.c490
-rw-r--r--programmer.h11
6 files changed, 629 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 4ebde1e..26b1424 100644
--- a/Makefile
+++ b/Makefile
@@ -632,6 +632,9 @@ CONFIG_IT8212 ?= yes
# Winchiphead CH341A
CONFIG_CH341A_SPI ?= yes
+# Enable J-Link for now.
+CONFIG_JLINK_SPI ?= yes
+
# Disable wiki printing by default. It is only useful if you have wiki access.
CONFIG_PRINT_WIKI ?= no
@@ -920,6 +923,12 @@ PROGRAMMER_OBJS += ch341a_spi.o
NEED_LIBUSB1 += CONFIG_CH341A_SPI
endif
+ifeq ($(CONFIG_JLINK_SPI), yes)
+NEED_LIBJAYLINK += CONFIG_JLINK_SPI
+FEATURE_CFLAGS += -D'CONFIG_JLINK_SPI=1'
+PROGRAMMER_OBJS += jlink_spi.o
+endif
+
ifneq ($(NEED_SERIAL), )
LIB_OBJS += serial.o
endif
@@ -993,6 +1002,12 @@ endif
endif
endif
+ifneq ($(NEED_LIBJAYLINK), )
+CHECK_LIBJAYLINK = yes
+JAYLINKLIBS += $(call debug_shell,[ -n "$(PKG_CONFIG_LIBDIR)" ] && export PKG_CONFIG_LIBDIR="$(PKG_CONFIG_LIBDIR)"; $(PKG_CONFIG) --libs libjaylink)
+override CPPFLAGS += $(call debug_shell,[ -n "$(PKG_CONFIG_LIBDIR)" ] && export PKG_CONFIG_LIBDIR="$(PKG_CONFIG_LIBDIR)"; $(PKG_CONFIG) --cflags-only-I libjaylink)
+endif
+
ifeq ($(CONFIG_PRINT_WIKI), yes)
FEATURE_CFLAGS += -D'CONFIG_PRINT_WIKI=1'
CLI_OBJS += print_wiki.o
@@ -1012,7 +1027,7 @@ ifeq ($(ARCH), x86)
endif
$(PROGRAM)$(EXEC_SUFFIX): $(OBJS)
- $(CC) $(LDFLAGS) -o $(PROGRAM)$(EXEC_SUFFIX) $(OBJS) $(LIBS) $(PCILIBS) $(FEATURE_LIBS) $(USBLIBS) $(USB1LIBS)
+ $(CC) $(LDFLAGS) -o $(PROGRAM)$(EXEC_SUFFIX) $(OBJS) $(LIBS) $(PCILIBS) $(FEATURE_LIBS) $(USBLIBS) $(USB1LIBS) $(JAYLINKLIBS)
libflashrom.a: $(LIBFLASHROM_OBJS)
$(AR) rcs $@ $^
@@ -1146,6 +1161,24 @@ int main(int argc, char **argv)
endef
export LIBUSB1_TEST
+define LIBJAYLINK_TEST
+#include <stddef.h>
+#include <libjaylink/libjaylink.h>
+int main(int argc, char **argv)
+{
+ struct jaylink_context *ctx;
+
+ (void)argc;
+ (void)argv;
+
+ jaylink_init(&ctx);
+ jaylink_exit(ctx);
+
+ return 0;
+}
+endef
+export LIBJAYLINK_TEST
+
hwlibs: compiler
@printf "" > .libdeps
ifeq ($(CHECK_LIBPCI), yes)
@@ -1224,6 +1257,28 @@ ifeq ($(CHECK_LIBUSB1), yes)
rm -f .test.c .test.o .test$(EXEC_SUFFIX); exit 1; }; } 2>>$(BUILD_DETAILS_FILE); echo $? >&3 ; } | tee -a $(BUILD_DETAILS_FILE) >&4; } 3>&1;} | { read rc ; exit ${rc}; } } 4>&1
@rm -f .test.c .test.o .test$(EXEC_SUFFIX)
endif
+ifeq ($(CHECK_LIBJAYLINK), yes)
+ @printf "Checking for libjaylink headers... " | tee -a $(BUILD_DETAILS_FILE)
+ @echo "$$LIBJAYLINK_TEST" > .test.c
+ @printf "\nexec: %s\n" "$(CC) -c $(CPPFLAGS) $(CFLAGS) .test.c -o .test.o" >>$(BUILD_DETAILS_FILE)
+ @{ { { { { $(CC) -c $(CPPFLAGS) $(CFLAGS) .test.c -o .test.o >&2 && \
+ echo "found." || { echo "not found."; echo; \
+ echo "The following feature requires libjaylink: $(NEED_LIBJAYLINK)."; \
+ echo "Please install libjaylink headers or disable the feature"; \
+ echo "mentioned above by specifying make CONFIG_JLINK_SPI=no"; \
+ echo "See README for more information."; echo; \
+ rm -f .test.c .test.o; exit 1; }; } 2>>$(BUILD_DETAILS_FILE); echo $? >&3 ; } | tee -a $(BUILD_DETAILS_FILE) >&4; } 3>&1;} | { read rc ; exit ${rc}; } } 4>&1
+ @printf "Checking if libjaylink is usable... " | tee -a $(BUILD_DETAILS_FILE)
+ @printf "\nexec: %s\n" "$(CC) $(LDFLAGS) .test.o -o .test$(EXEC_SUFFIX) $(LIBS) $(JAYLINKLIBS)" >>$(BUILD_DETAILS_FILE)
+ @{ { { { { $(CC) $(LDFLAGS) .test.o -o .test$(EXEC_SUFFIX) $(LIBS) $(JAYLINKLIBS) >&2 && \
+ echo "yes." || { echo "no."; \
+ echo "The following feature requires libjaylink: $(NEED_LIBJAYLINK)."; \
+ echo "Please install libjaylink or disable the feature"; \
+ echo "mentioned above by specifying make CONFIG_JLINK_SPI=no"; \
+ echo "See README for more information."; echo; \
+ rm -f .test.c .test.o .test$(EXEC_SUFFIX); exit 1; }; } 2>>$(BUILD_DETAILS_FILE); echo $? >&3 ; } | tee -a $(BUILD_DETAILS_FILE) >&4; } 3>&1;} | { read rc ; exit ${rc}; } } 4>&1
+ @rm -f .test.c .test.o .test$(EXEC_SUFFIX)
+endif
.features: features
diff --git a/README b/README
index ab761f7..a78f878 100644
--- a/README
+++ b/README
@@ -48,6 +48,7 @@ To build flashrom you need to install the following software:
* pciutils+libpci (if you want support for mainboard or PCI device flashing)
* libusb (if you want FT2232, Dediprog or USB-Blaster support)
* libftdi (if you want FT2232 or USB-Blaster support)
+ * libjaylink (if you want support for SEGGER J-Link and compatible devices)
Linux et al:
diff --git a/flashrom.8.tmpl b/flashrom.8.tmpl
index 34e1fe7..f5184e7 100644
--- a/flashrom.8.tmpl
+++ b/flashrom.8.tmpl
@@ -269,6 +269,8 @@ bitbanging adapter)
.sp
.BR "* ch341a_spi" " (for SPI flash ROMs attached to WCH CH341A)"
.sp
+.BR "* jlink_spi" " (for SPI flash ROMs attached to SEGGER J-Link and compatible devices)"
+.sp
Some programmers have optional or mandatory parameters which are described
in detail in the
.B PROGRAMMER-SPECIFIC INFORMATION
@@ -1031,6 +1033,63 @@ Please also note that the mstarddc_spi driver only works on Linux.
.BR "ch341a_spi " programmer
The WCH CH341A programmer does not support any parameters currently. SPI frequency is fixed at 2 MHz, and CS0 is
used as per the device.
+.SS
+.BR "jlink_spi " programmer
+.IP
+This module supports SEGGER J-Link and compatible devices.
+
+The \fBMOSI\fP signal of the flash chip must be attached to \fBTDI\fP pin of
+the programmer, \fBMISO\fP to \fBTDO\fP and \fBSCK\fP to \fBTCK\fP.
+The chip select (\fBCS\fP) signal of the flash chip can be attached to
+different pins of the programmer which can be selected with the
+.sp
+.B " flashrom \-p jlink_spi:cs=pin"
+.sp
+syntax where \fBpin\fP can be either \fBTRST\fP or \fBRESET\fP.
+The default pin for chip select is \fBRESET\fP.
+Note that, when using \fBRESET\fP, it is normal that the indicator LED blinks
+orange or red.
+.br
+Additionally, the \fBVTref\fP pin of the programmer must be attached to the
+logic level of the flash chip.
+The programmer measures the voltage on this pin and generates the reference
+voltage for its input comparators and adapts its output voltages to it.
+.sp
+Pinout for devices with 20-pin JTAG connector:
+.sp
+ +-------+
+ | 1 2 | 1: VTref 15: RESET
+ | 3 4 | 3: TRST 19: Power supply (5 V)
+ | 5 6 | 4: GND
+ +-+ 7 8 | 5: TDI
+ | 9 10 | 6: GND
+ | 11 12 | 8: GND
+ +-+ 13 14 | 9: TCK
+ | 15 16 | 10: GND
+ | 17 18 | 12: GND
+ | 19 20 | 13: TDO
+ +-------+
+.sp
+If there is more than one compatible device connected, you can select which one
+should be used by specifying its serial number with the
+.sp
+.B " flashrom \-p jlink_spi:serial=number"
+.sp
+syntax where
+.B number
+is the serial number of the device (which can be found for example in the
+output of lsusb -v).
+.sp
+The SPI speed can be selected by using the
+.sp
+.B " flashrom \-p jlink_spi:spispeed=frequency"
+.sp
+syntax where \fBfrequency\fP is the SPI clock frequency in Hz.
+The minimum SPI speed is 1 kHz whereas the maximum speed depends on the device
+in use.
+Note that a speed which is not a multiple of 1 kHz is automatically reduced to
+such one.
+
.SH EXAMPLES
To back up and update your BIOS, run
.sp
diff --git a/flashrom.c b/flashrom.c
index 25e53f2..44559f9 100644
--- a/flashrom.c
+++ b/flashrom.c
@@ -402,6 +402,18 @@ const struct programmer_entry programmer_table[] = {
},
#endif
+#if CONFIG_JLINK_SPI == 1
+ {
+ .name = "jlink_spi",
+ .type = OTHER,
+ .init = jlink_spi_init,
+ .devs.note = "SEGGER J-Link and compatible devices\n",
+ .map_flash_region = fallback_map,
+ .unmap_flash_region = fallback_unmap,
+ .delay = internal_delay,
+ },
+#endif
+
{0}, /* This entry corresponds to PROGRAMMER_INVALID. */
};
diff --git a/jlink_spi.c b/jlink_spi.c
new file mode 100644
index 0000000..d6c41b1
--- /dev/null
+++ b/jlink_spi.c
@@ -0,0 +1,490 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2016 Marc Schink <flashrom-dev@marcschink.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY 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; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/* Driver for the J-Link hardware by SEGGER.
+ * See https://www.segger.com/ for more info.
+ */
+
+#include <stdlib.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <string.h>
+#include <errno.h>
+#include <libjaylink/libjaylink.h>
+
+#include "flash.h"
+#include "programmer.h"
+#include "spi.h"
+
+/*
+ * Maximum number of bytes that can be transferred at once via the JTAG
+ * interface.
+ */
+#define JTAG_MAX_TRANSFER_SIZE (UINT16_MAX / 8)
+
+/*
+ * Default base frequency in Hz. Used when the base frequency can not be
+ * retrieved from the device.
+ */
+#define DEFAULT_FREQ 16000000
+
+/*
+ * Default frequency divider. Used when the frequency divider can not be
+ * retrieved from the device.
+ */
+#define DEFAULT_FREQ_DIV 4
+
+/* Minimum target voltage required for operation in mV. */
+#define MIN_TARGET_VOLTAGE 1200
+
+static struct jaylink_context *jaylink_ctx;
+static struct jaylink_device_handle *jaylink_devh;
+static uint8_t *buffer;
+static size_t buffer_size;
+static bool reset_cs;
+
+static bool assert_cs(void)
+{
+ int ret;
+
+ if (reset_cs) {
+ ret = jaylink_clear_reset(jaylink_devh);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_clear_reset() failed: %s.\n",
+ jaylink_strerror(ret));
+ return false;
+ }
+ } else {
+ ret = jaylink_jtag_clear_trst(jaylink_devh);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_jtag_clear_trst() failed: %s.\n",
+ jaylink_strerror(ret));
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static bool deassert_cs(void)
+{
+ int ret;
+
+ if (reset_cs) {
+ ret = jaylink_set_reset(jaylink_devh);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_clear_reset() failed: %s.\n",
+ jaylink_strerror(ret));
+ return false;
+ }
+ } else {
+ ret = jaylink_jtag_set_trst(jaylink_devh);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_jtag_clear_trst() failed: %s.\n",
+ jaylink_strerror(ret));
+ return false;
+ }
+ }
+
+ return true;
+}
+
+static int jlink_spi_send_command(struct flashctx *flash,
+ unsigned int writecnt, unsigned int readcnt,
+ const unsigned char *writearr, unsigned char *readarr)
+{
+ uint32_t length;
+
+ length = writecnt + readcnt;
+
+ if (length > JTAG_MAX_TRANSFER_SIZE)
+ return SPI_INVALID_LENGTH;
+
+ if (length > buffer_size) {
+ uint8_t *tmp;
+
+ tmp = realloc(buffer, length);
+
+ if (!tmp) {
+ msg_perr("Memory allocation failed.\n");
+ free(buffer);
+ return SPI_GENERIC_ERROR;
+ }
+
+ buffer = tmp;
+ }
+
+ /* Reverse all bytes because the device transfers data LSB first. */
+ reverse_bytes(buffer, writearr, writecnt);
+
+ memset(buffer + writecnt, 0x00, readcnt);
+
+ if (!assert_cs())
+ return SPI_PROGRAMMER_ERROR;
+
+ int ret;
+
+ ret = jaylink_jtag_io(jaylink_devh, buffer, buffer, buffer, length * 8,
+ JAYLINK_JTAG_VERSION_2);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_jag_io() failed: %s.\n",
+ jaylink_strerror(ret));
+ return SPI_PROGRAMMER_ERROR;
+ }
+
+ if (!deassert_cs())
+ return SPI_PROGRAMMER_ERROR;
+
+ /* Reverse all bytes because the device transfers data LSB first. */
+ reverse_bytes(readarr, buffer + writecnt, readcnt);
+
+ return 0;
+}
+
+static const struct spi_master spi_master_jlink_spi = {
+ .type = SPI_CONTROLLER_JLINK_SPI,
+ /* Maximum data read size in one go (excluding opcode+address). */
+ .max_data_read = JTAG_MAX_TRANSFER_SIZE,
+ /* Maximum data write size in one go (excluding opcode+address). */
+ .max_data_write = JTAG_MAX_TRANSFER_SIZE,
+ .command = jlink_spi_send_command,
+ .multicommand = default_spi_send_multicommand,
+ .read = default_spi_read,
+ .write_256 = default_spi_write_256,
+ .write_aai = default_spi_write_aai,
+};
+
+static int jlink_spi_shutdown(void *data)
+{
+ free(buffer);
+
+ if (jaylink_devh)
+ jaylink_close(jaylink_devh);
+
+ jaylink_exit(jaylink_ctx);
+
+ return 0;
+}
+
+int jlink_spi_init(void)
+{
+ char *arg;
+ unsigned long speed = 0;
+
+ register_shutdown(jlink_spi_shutdown, NULL);
+
+ arg = extract_programmer_param("spispeed");
+
+ if (arg && strlen(arg) > 0) {
+ char *endptr;
+
+ errno = 0;
+ speed = strtoul(arg, &endptr, 10);
+
+ if (*endptr != '\0' || errno != 0) {
+ msg_perr("Invalid SPI speed specified: %s.\n", arg);
+ free(arg);
+ return 1;
+ }
+
+ if (speed < 1000) {
+ msg_perr("SPI speed must be at least 1 kHz.\n");
+ free(arg);
+ return 1;
+ }
+
+ if (speed % 1000 > 0) {
+ speed -= speed % 1000;
+ msg_pinfo("Reduced SPI speed to %lu kHz (multiple of "
+ "1 kHz).\n", speed / 1000);
+ }
+
+ speed /= 1000;
+ }
+
+ free(arg);
+
+ int ret;
+ bool use_serial_number;
+ uint32_t serial_number;
+
+ arg = extract_programmer_param("serial");
+
+ if (arg && strlen(arg) > 0) {
+ ret = jaylink_parse_serial_number(arg, &serial_number);
+
+ if (ret == JAYLINK_ERR) {
+ msg_perr("Invalid serial number specified: %s.\n",
+ arg);
+ free(arg);
+ return 1;
+ } if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_parse_serial_number() failed: %s.\n",
+ jaylink_strerror(ret));
+ free(arg);
+ return 1;
+ }
+
+ use_serial_number = true;
+ } else {
+ use_serial_number = false;
+ }
+
+ free(arg);
+
+ reset_cs = true;
+ arg = extract_programmer_param("cs");
+
+ if (arg && strlen(arg) > 0) {
+ if (!strcasecmp(arg, "reset")) {
+ reset_cs = true;
+ } else if (!strcasecmp(arg, "trst")) {
+ reset_cs = false;
+ } else {
+ msg_perr("Invalid chip select pin specified: %s.\n",
+ arg);
+ free(arg);
+ return 1;
+ }
+ }
+
+ free(arg);
+
+ if (reset_cs)
+ msg_pdbg("Using RESET as chip select signal.\n");
+ else
+ msg_pdbg("Using TRST as chip select signal.\n");
+
+ ret = jaylink_init(&jaylink_ctx);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_init() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ ret = jaylink_discovery_scan(jaylink_ctx, 0);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_discover_scan() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ struct jaylink_device **devs;
+
+ ret = jaylink_get_devices(jaylink_ctx, &devs, NULL);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_devices() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ if (!use_serial_number)
+ msg_pdbg("No device selected, using first device.\n");
+
+ size_t i;
+ struct jaylink_device *dev;
+ bool device_found = false;
+
+ for (i = 0; devs[i]; i++) {
+ if (use_serial_number) {
+ uint32_t tmp;
+
+ ret = jaylink_device_get_serial_number(devs[i], &tmp);
+
+ if (ret == JAYLINK_ERR_NOT_AVAILABLE) {
+ continue;
+ } else if (ret != JAYLINK_OK) {
+ msg_pwarn("jaylink_device_get_serial_number() "
+ "failed: %s.\n",
+ jaylink_strerror(ret));
+ continue;
+ }
+
+ if (serial_number != tmp)
+ continue;
+ }
+
+ ret = jaylink_open(devs[i], &jaylink_devh);
+
+ if (ret == JAYLINK_OK) {
+ dev = devs[i];
+ device_found = true;
+ break;
+ }
+
+ jaylink_devh = NULL;
+ }
+
+ jaylink_free_devices(devs, true);
+
+ if (!device_found) {
+ msg_perr("No J-Link device found.\n");
+ return 1;
+ }
+
+ size_t length;
+ char *firmware_version;
+
+ ret = jaylink_get_firmware_version(jaylink_devh, &firmware_version,
+ &length);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_firmware_version() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ } else if (length > 0) {
+ msg_pdbg("Firmware: %s\n", firmware_version);
+ free(firmware_version);
+ }
+
+ ret = jaylink_device_get_serial_number(dev, &serial_number);
+
+ if (ret == JAYLINK_OK) {
+ msg_pdbg("S/N: %" PRIu32 "\n", serial_number);
+ } else if (ret == JAYLINK_ERR_NOT_AVAILABLE) {
+ msg_pdbg("S/N: N/A\n");
+ } else {
+ msg_perr("jaylink_device_get_serial_number() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ uint8_t caps[JAYLINK_DEV_EXT_CAPS_SIZE];
+
+ memset(caps, 0, JAYLINK_DEV_EXT_CAPS_SIZE);
+ ret = jaylink_get_caps(jaylink_devh, caps);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_caps() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_EXT_CAPS)) {
+ ret = jaylink_get_extended_caps(jaylink_devh, caps);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_available_interfaces() failed: "
+ "%s.\n", jaylink_strerror(ret));
+ return 1;
+ }
+ }
+
+ uint32_t ifaces;
+
+ ret = jaylink_get_available_interfaces(jaylink_devh, &ifaces);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_available_interfaces() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ if (!(ifaces & (1 << JAYLINK_TIF_JTAG))) {
+ msg_perr("Device does not support JTAG interface.\n");
+ return 1;
+ }
+
+ ret = jaylink_select_interface(jaylink_devh, JAYLINK_TIF_JTAG, NULL);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_select_interface() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ struct jaylink_hardware_status hwstat;
+
+ ret = jaylink_get_hardware_status(jaylink_devh, &hwstat);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_hardware_status() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ msg_pdbg("VTarget: %u.%03u V\n", hwstat.target_voltage / 1000,
+ hwstat.target_voltage % 1000);
+
+ if (hwstat.target_voltage < MIN_TARGET_VOLTAGE) {
+ msg_perr("Target voltage is below %u.%03u V. You need to "
+ "attach VTref to the I/O voltage of the chip.\n",
+ MIN_TARGET_VOLTAGE / 1000,
+ MIN_TARGET_VOLTAGE % 1000);
+ return 1;
+ }
+
+ struct jaylink_speed device_speeds;
+
+ device_speeds.freq = DEFAULT_FREQ;
+ device_speeds.div = DEFAULT_FREQ_DIV;
+
+ if (jaylink_has_cap(caps, JAYLINK_DEV_CAP_GET_SPEEDS)) {
+ ret = jaylink_get_speeds(jaylink_devh, &device_speeds);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_get_speeds() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+ }
+
+ device_speeds.freq /= 1000;
+
+ msg_pdbg("Maximum SPI speed: %" PRIu32 " kHz\n",
+ device_speeds.freq / device_speeds.div);
+
+ if (!speed) {
+ speed = device_speeds.freq / device_speeds.div;
+ msg_pdbg("SPI speed not specified, using %lu kHz.\n", speed);
+ }
+
+ if (speed > (device_speeds.freq / device_speeds.div)) {
+ msg_perr("Specified SPI speed of %lu kHz is too high. Maximum "
+ "is %" PRIu32 " kHz.\n", speed,
+ device_speeds.freq / device_speeds.div);
+ return 1;
+ }
+
+ ret = jaylink_set_speed(jaylink_devh, speed);
+
+ if (ret != JAYLINK_OK) {
+ msg_perr("jaylink_set_speed() failed: %s.\n",
+ jaylink_strerror(ret));
+ return 1;
+ }
+
+ msg_pdbg("SPI speed: %lu kHz\n", speed);
+
+ /* Ensure that the CS signal is not active initially. */
+ if (!deassert_cs())
+ return 1;
+
+ register_spi_master(&spi_master_jlink_spi);
+
+ return 0;
+}
diff --git a/programmer.h b/programmer.h
index 1a6216a..820c8f8 100644
--- a/programmer.h
+++ b/programmer.h
@@ -111,6 +111,9 @@ enum programmer {
#if CONFIG_CH341A_SPI == 1
PROGRAMMER_CH341A_SPI,
#endif
+#if CONFIG_JLINK_SPI == 1
+ PROGRAMMER_JLINK_SPI,
+#endif
PROGRAMMER_INVALID /* This must always be the last entry. */
};
@@ -538,6 +541,11 @@ void ch341a_spi_delay(unsigned int usecs);
extern const struct dev_entry devs_ch341a_spi[];
#endif
+/* jlink_spi.c */
+#if CONFIG_JLINK_SPI == 1
+int jlink_spi_init(void);
+#endif
+
/* flashrom.c */
struct decode_sizes {
uint32_t parallel;
@@ -600,6 +608,9 @@ enum spi_controller {
#if CONFIG_CH341A_SPI == 1
SPI_CONTROLLER_CH341A_SPI,
#endif
+#if CONFIG_JLINK_SPI == 1
+ SPI_CONTROLLER_JLINK_SPI,
+#endif
};
#define MAX_DATA_UNSPECIFIED 0