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Diffstat (limited to 'src/pld/virtex2.c')
-rw-r--r-- | src/pld/virtex2.c | 264 |
1 files changed, 264 insertions, 0 deletions
diff --git a/src/pld/virtex2.c b/src/pld/virtex2.c new file mode 100644 index 0000000..8624367 --- /dev/null +++ b/src/pld/virtex2.c @@ -0,0 +1,264 @@ +/*************************************************************************** + * Copyright (C) 2006 by Dominic Rath * + * Dominic.Rath@gmx.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; either version 2 of the License, or * + * (at your option) any later version. * + * * + * 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., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "virtex2.h" + +#include "pld.h" +#include "xilinx_bit.h" +#include "command.h" +#include "log.h" +#include "jtag.h" + +#include <stdlib.h> + +int virtex2_register_commands(struct command_context_s *cmd_ctx); +int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device); +int virtex2_load(struct pld_device_s *pld_device, char *filename); + +pld_driver_t virtex2_pld = +{ + .name = "virtex2", + .register_commands = virtex2_register_commands, + .pld_device_command = virtex2_pld_device_command, + .load = virtex2_load, +}; + +int virtex2_set_instr(int chain_pos, u32 new_instr) +{ + jtag_device_t *device = jtag_get_device(chain_pos); + + if (buf_get_u32(device->cur_instr, 0, device->ir_length) != new_instr) + { + scan_field_t field; + + field.device = chain_pos; + field.num_bits = device->ir_length; + field.out_value = calloc(CEIL(field.num_bits, 8), 1); + buf_set_u32(field.out_value, 0, field.num_bits, new_instr); + field.out_mask = NULL; + field.in_value = NULL; + field.in_check_value = NULL; + field.in_check_mask = NULL; + field.in_handler = NULL; + field.in_handler_priv = NULL; + + jtag_add_ir_scan(1, &field, TAP_RTI); + + free(field.out_value); + } + + return ERROR_OK; +} + +int virtex2_send_32(struct pld_device_s *pld_device, int num_words, u32 *words) +{ + virtex2_pld_device_t *virtex2_info = pld_device->driver_priv; + scan_field_t scan_field; + u8 *values; + int i; + + values = malloc(num_words * 4); + + scan_field.device = virtex2_info->chain_pos; + scan_field.num_bits = num_words * 32; + scan_field.out_value = values; + scan_field.out_mask = NULL; + scan_field.in_value = NULL; + scan_field.in_check_value = NULL; + scan_field.in_check_mask = NULL; + scan_field.in_handler = NULL; + scan_field.in_handler_priv = NULL; + + for (i = 0; i < num_words; i++) + buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32)); + + virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */ + + jtag_add_dr_scan(1, &scan_field, TAP_PD); + + free(values); + + return ERROR_OK; +} + +int virtex2_jtag_buf_to_u32(u8 *in_buf, void *priv) +{ + u32 *dest = priv; + *dest = flip_u32(le_to_h_u32(in_buf), 32); + return ERROR_OK; +} + +int virtex2_receive_32(struct pld_device_s *pld_device, int num_words, u32 *words) +{ + virtex2_pld_device_t *virtex2_info = pld_device->driver_priv; + scan_field_t scan_field; + + scan_field.device = virtex2_info->chain_pos; + scan_field.num_bits = 32; + scan_field.out_value = NULL; + scan_field.out_mask = NULL; + scan_field.in_value = NULL; + scan_field.in_check_value = NULL; + scan_field.in_check_mask = NULL; + scan_field.in_handler = virtex2_jtag_buf_to_u32; + + virtex2_set_instr(virtex2_info->chain_pos, 0x4); /* CFG_OUT */ + + while (num_words--) + { + scan_field.in_handler_priv = words++; + jtag_add_dr_scan(1, &scan_field, TAP_PD); + } + + return ERROR_OK; +} + +int virtex2_read_stat(struct pld_device_s *pld_device, u32 *status) +{ + u32 data[5]; + + jtag_add_statemove(TAP_TLR); + + data[0] = 0xaa995566; /* synch word */ + data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */ + data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */ + data[3] = 0x20000000; /* NOOP */ + data[4] = 0x20000000; /* NOOP */ + virtex2_send_32(pld_device, 5, data); + + virtex2_receive_32(pld_device, 1, status); + + jtag_execute_queue(); + + DEBUG("status: 0x%8.8x", *status); + + return ERROR_OK; +} + +int virtex2_load(struct pld_device_s *pld_device, char *filename) +{ + virtex2_pld_device_t *virtex2_info = pld_device->driver_priv; + xilinx_bit_file_t bit_file; + int retval; + int i; + + scan_field_t field; + + field.device = virtex2_info->chain_pos; + field.out_mask = NULL; + field.in_value = NULL; + field.in_check_value = NULL; + field.in_check_mask = NULL; + field.in_handler = NULL; + field.in_handler_priv = NULL; + + if ((retval = xilinx_read_bit_file(&bit_file, filename)) != ERROR_OK) + return retval; + + jtag_add_end_state(TAP_RTI); + virtex2_set_instr(virtex2_info->chain_pos, 0xb); /* JPROG_B */ + jtag_execute_queue(); + jtag_add_sleep(1000); + + virtex2_set_instr(virtex2_info->chain_pos, 0x5); /* CFG_IN */ + jtag_execute_queue(); + + for (i = 0; i < bit_file.length; i++) + bit_file.data[i] = flip_u32(bit_file.data[i], 8); + + field.num_bits = bit_file.length * 8; + field.out_value = bit_file.data; + + jtag_add_dr_scan(1, &field, TAP_PD); + jtag_execute_queue(); + + jtag_add_statemove(TAP_TLR); + + jtag_add_end_state(TAP_RTI); + virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */ + jtag_add_runtest(13, TAP_RTI); + virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */ + virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */ + virtex2_set_instr(virtex2_info->chain_pos, 0xc); /* JSTART */ + jtag_add_runtest(13, TAP_RTI); + virtex2_set_instr(virtex2_info->chain_pos, 0x3f); /* BYPASS */ + jtag_execute_queue(); + + return ERROR_OK; +} + +int virtex2_handle_read_stat_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) +{ + pld_device_t *device; + virtex2_pld_device_t *virtex2_info; + u32 status; + + if (argc < 1) + { + command_print(cmd_ctx, "usage: virtex2 read_stat <num>"); + return ERROR_OK; + } + + device = get_pld_device_by_num(strtoul(args[0], NULL, 0)); + if (!device) + { + command_print(cmd_ctx, "pld device '#%s' is out of bounds", args[0]); + return ERROR_OK; + } + + virtex2_info = device->driver_priv; + + virtex2_read_stat(device, &status); + + command_print(cmd_ctx, "virtex2 status register: 0x%8.8x", status); + + return ERROR_OK; +} + +int virtex2_register_commands(struct command_context_s *cmd_ctx) +{ + command_t *virtex2_cmd = register_command(cmd_ctx, NULL, "virtex2", NULL, COMMAND_ANY, "virtex2 specific commands"); + + register_command(cmd_ctx, virtex2_cmd, "read_stat", virtex2_handle_read_stat_command, COMMAND_EXEC, + "read Virtex-II status register"); + + return ERROR_OK; +} + +int virtex2_pld_device_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc, struct pld_device_s *pld_device) +{ + virtex2_pld_device_t *virtex2_info; + + if (argc < 2) + { + WARNING("incomplete pld device 'virtex2' configuration"); + return ERROR_PLD_DEVICE_INVALID; + } + + virtex2_info = malloc(sizeof(virtex2_pld_device_t)); + pld_device->driver_priv = virtex2_info; + + virtex2_info->chain_pos = strtoul(args[1], NULL, 0); + + return ERROR_OK; +} |