diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/pld/ecp5.c | 71 | ||||
-rw-r--r-- | src/pld/ecp5.h | 3 | ||||
-rw-r--r-- | src/pld/lattice.c | 6 | ||||
-rw-r--r-- | src/pld/lattice_cmd.h | 1 |
4 files changed, 81 insertions, 0 deletions
diff --git a/src/pld/ecp5.c b/src/pld/ecp5.c index 2e1009b..024fe2b 100644 --- a/src/pld/ecp5.c +++ b/src/pld/ecp5.c @@ -205,3 +205,74 @@ int lattice_ecp5_load(struct lattice_pld_device *lattice_device, struct lattice_ const uint32_t mask3 = STATUS_DONE_BIT | STATUS_FAIL_FLAG; return lattice_verify_status_register_u32(lattice_device, out, expected2, mask3, false); } + +int lattice_ecp5_connect_spi_to_jtag(struct lattice_pld_device *pld_device_info) +{ + if (!pld_device_info) + return ERROR_FAIL; + + struct jtag_tap *tap = pld_device_info->tap; + if (!tap) + return ERROR_FAIL; + + if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) == PROGRAM_SPI) + return ERROR_OK; + + // erase configuration + int retval = lattice_preload(pld_device_info); + if (retval != ERROR_OK) + return retval; + + retval = lattice_ecp5_enable_sram_programming(tap); + if (retval != ERROR_OK) + return retval; + + retval = lattice_ecp5_erase_sram(tap); + if (retval != ERROR_OK) + return retval; + + retval = lattice_ecp5_exit_programming_mode(tap); + if (retval != ERROR_OK) + return retval; + + // connect jtag to spi pins + retval = lattice_set_instr(tap, PROGRAM_SPI, TAP_IDLE); + if (retval != ERROR_OK) + return retval; + + struct scan_field field; + uint8_t buffer[2] = {0xfe, 0x68}; + field.num_bits = 16; + field.out_value = buffer; + field.in_value = NULL; + jtag_add_dr_scan(tap, 1, &field, TAP_IDLE); + + return jtag_execute_queue(); +} + +int lattice_ecp5_disconnect_spi_from_jtag(struct lattice_pld_device *pld_device_info) +{ + if (!pld_device_info) + return ERROR_FAIL; + + struct jtag_tap *tap = pld_device_info->tap; + if (!tap) + return ERROR_FAIL; + + /* Connecting it again takes way too long to do it multiple times for writing + a bitstream (ca. 0.4s each access). + We just leave it connected since SCS will not be active when not in shift_dr state. + So there is no need to change instruction, just make sure we are not in shift dr state. */ + jtag_add_runtest(2, TAP_IDLE); + return jtag_execute_queue(); +} + +int lattice_ecp5_get_facing_read_bits(struct lattice_pld_device *pld_device_info, unsigned int *facing_read_bits) +{ + if (!pld_device_info) + return ERROR_FAIL; + + *facing_read_bits = 0; + + return ERROR_OK; +} diff --git a/src/pld/ecp5.h b/src/pld/ecp5.h index 7b0c86b..daf481f 100644 --- a/src/pld/ecp5.h +++ b/src/pld/ecp5.h @@ -14,5 +14,8 @@ int lattice_ecp5_read_status(struct jtag_tap *tap, uint32_t *status, uint32_t ou int lattice_ecp5_read_usercode(struct jtag_tap *tap, uint32_t *usercode, uint32_t out); int lattice_ecp5_write_usercode(struct lattice_pld_device *lattice_device, uint32_t usercode); int lattice_ecp5_load(struct lattice_pld_device *lattice_device, struct lattice_bit_file *bit_file); +int lattice_ecp5_connect_spi_to_jtag(struct lattice_pld_device *pld_device_info); +int lattice_ecp5_disconnect_spi_from_jtag(struct lattice_pld_device *pld_device_info); +int lattice_ecp5_get_facing_read_bits(struct lattice_pld_device *pld_device_info, unsigned int *facing_read_bits); #endif /* OPENOCD_PLD_ECP5_H */ diff --git a/src/pld/lattice.c b/src/pld/lattice.c index 4085ec1..14dbf2a 100644 --- a/src/pld/lattice.c +++ b/src/pld/lattice.c @@ -355,6 +355,8 @@ static int lattice_connect_spi_to_jtag(struct pld_device *pld_device) if (pld_device_info->family == LATTICE_ECP2 || pld_device_info->family == LATTICE_ECP3) return lattice_ecp2_3_connect_spi_to_jtag(pld_device_info); + else if (pld_device_info->family == LATTICE_ECP5) + return lattice_ecp5_connect_spi_to_jtag(pld_device_info); return ERROR_FAIL; } @@ -372,6 +374,8 @@ static int lattice_disconnect_spi_from_jtag(struct pld_device *pld_device) if (pld_device_info->family == LATTICE_ECP2 || pld_device_info->family == LATTICE_ECP3) return lattice_ecp2_3_disconnect_spi_from_jtag(pld_device_info); + else if (pld_device_info->family == LATTICE_ECP5) + return lattice_ecp5_disconnect_spi_from_jtag(pld_device_info); return ERROR_FAIL; } @@ -390,6 +394,8 @@ static int lattice_get_stuff_bits(struct pld_device *pld_device, unsigned int *f if (pld_device_info->family == LATTICE_ECP2 || pld_device_info->family == LATTICE_ECP3) return lattice_ecp2_3_get_facing_read_bits(pld_device_info, facing_read_bits); + else if (pld_device_info->family == LATTICE_ECP5) + return lattice_ecp5_get_facing_read_bits(pld_device_info, facing_read_bits); return ERROR_FAIL; } diff --git a/src/pld/lattice_cmd.h b/src/pld/lattice_cmd.h index 8d66ac4..389b7af 100644 --- a/src/pld/lattice_cmd.h +++ b/src/pld/lattice_cmd.h @@ -10,6 +10,7 @@ #define ISC_ERASE 0x0E #define ISC_DISABLE 0x26 +#define PROGRAM_SPI 0x3A #define LSC_READ_STATUS 0x3C #define LSC_INIT_ADDRESS 0x46 #define LSC_BITSTREAM_BURST 0x7A |