diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jtag/ft2232.c | 78 |
1 files changed, 77 insertions, 1 deletions
diff --git a/src/jtag/ft2232.c b/src/jtag/ft2232.c index 5a8a44e3..d177c6c2 100644 --- a/src/jtag/ft2232.c +++ b/src/jtag/ft2232.c @@ -92,6 +92,8 @@ static int ft2232_handle_latency_command(struct command_context_s* cmd_ctx, char */ static int ft2232_stableclocks(int num_cycles, jtag_command_t* cmd); +/* max TCK for the high speed devices 30000 kHz */ +#define FTDI_2232H_4232H_MAX_TCK 30000 static char * ft2232_device_desc_A = NULL; static char* ft2232_device_desc = NULL; @@ -174,6 +176,7 @@ static u8 high_direction = 0x0; #if BUILD_FT2232_FTD2XX == 1 static FT_HANDLE ftdih = NULL; +static FT_DEVICE ftdi_device = 0; #elif BUILD_FT2232_LIBFTDI == 1 static struct ftdi_context ftdic; #endif @@ -411,6 +414,46 @@ static int ft2232_read(u8* buf, u32 size, u32* bytes_read) return ERROR_OK; } +#ifdef BUILD_FTD2XX_HIGHSPEED +static bool ft2232_device_is_highspeed(void) +{ + return (ftdi_device == FT_DEVICE_2232H) || (ftdi_device == FT_DEVICE_4232H); +} + +static int ft2232_adaptive_clocking(int speed) +{ + bool use_adaptive_clocking = FALSE; + if (0 == speed) + { + if (ft2232_device_is_highspeed()) + use_adaptive_clocking = TRUE; + else + { + LOG_ERROR("ft2232 device %lu does not support RTCK", ftdi_device); + return ERROR_OK; + } + } + + u8 buf = use_adaptive_clocking ? 0x96 : 0x97; + LOG_DEBUG("%2.2x", buf); + + u32 bytes_written; + int retval = ft2232_write(&buf, 1, &bytes_written); + if (ERROR_OK != retval || bytes_written != 1) + { + LOG_ERROR("unable to set adative clocking: %d", retval); + return retval; + } + + return ERROR_OK; +} +#else +static int ft2232_adaptive_clocking(int speed) +{ + // not implemented on low-speed devices + return speed ? ERROR_OK : -1234; +} +#endif static int ft2232_speed(int speed) { @@ -418,6 +461,8 @@ static int ft2232_speed(int speed) int retval; u32 bytes_written; + ft2232_adaptive_clocking(speed); + buf[0] = 0x86; /* command "set divisor" */ buf[1] = speed & 0xff; /* valueL (0=6MHz, 1=3MHz, 2=2.0MHz, ...*/ buf[2] = (speed >> 8) & 0xff; /* valueH */ @@ -449,8 +494,15 @@ static int ft2232_khz(int khz, int* jtag_speed) { if (khz==0) { - LOG_DEBUG("RTCK not supported"); +#ifdef BUILD_FTD2XX_HIGHSPEED + *jtag_speed = 0; + return ERROR_OK; +#else + LOG_DEBUG("RCLK not supported"); + LOG_DEBUG("If you have a high-speed FTDI device, then " + "OpenOCD may be built with --enable-ftd2xx-highspeed."); return ERROR_FAIL; +#endif } /* Take a look in the FT2232 manual, @@ -1724,6 +1776,9 @@ static int ft2232_execute_queue() static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int* try_more) { FT_STATUS status; + DWORD deviceID; + char SerialNumber[16]; + char Description[64]; DWORD openex_flags = 0; char* openex_string = NULL; u8 latency_timer; @@ -1854,6 +1909,27 @@ static int ft2232_init_ftd2xx(u16 vid, u16 pid, int more, int* try_more) return ERROR_JTAG_INIT_FAILED; } + if ( ( status = FT_GetDeviceInfo(ftdih, &ftdi_device, &deviceID, SerialNumber, Description, NULL) ) != FT_OK ) + { + LOG_ERROR("unable to get FT_GetDeviceInfo: %lu", status); + return ERROR_JTAG_INIT_FAILED; + } + else + { + LOG_INFO("device: %lu", ftdi_device); + LOG_INFO("deviceID: %lu", deviceID); + LOG_INFO("SerialNumber: %s", SerialNumber); + LOG_INFO("Description: %s", Description); + +#ifdef BUILD_FTD2XX_HIGHSPEED + if (ft2232_device_is_highspeed()) + { + ft2232_max_tck = FTDI_2232H_4232H_MAX_TCK; + LOG_INFO("max TCK change to: %u kHz", ft2232_max_tck); + } +#endif + } + return ERROR_OK; } |