src/jtag/drivers/rlink_init.m4

   1 # SPDX-License-Identifier: GPL-2.0-or-later
   2
   3 #
   4 # Copyright (C) 2008 Lou Deluxe
   5 # lou.openocd012@fixit.nospammail.net
   6 #
   7
   8 m4_divert(`-1')
   9
  10 m4_undefine(`CTRL_MPEG_L')
  11 m4_undefine(`CTRL_CARD_L')
  12
  13 m4_ifelse(SHIFTER_PRESCALER, 1, `
  14         m4_define(`CTRL_MPEG_L', `m4_eval(`0x8 | 0x0')')
  15 ')
  16 m4_ifelse(SHIFTER_PRESCALER, 2, `
  17         m4_define(`CTRL_MPEG_L', `m4_eval(`0x8 | 0x2')')
  18         m4_define(`CTRL_CARD_L', `m4_eval(`0x8 | 0x1')')
  19 ')
  20 m4_ifelse(SHIFTER_PRESCALER, 8, `
  21         m4_define(`CTRL_MPEG_L', `m4_eval(`0x8 | 0x3')')
  22 ')
  23 m4_ifelse(SHIFTER_PRESCALER, 11, `
  24         m4_define(`CTRL_MPEG_L', `m4_eval(`0x8 | 0x4')')
  25 ')
  26 m4_ifelse(SHIFTER_PRESCALER, 64, `
  27         m4_define(`CTRL_MPEG_L', `m4_eval(`0x8 | 0x7')')
  28 ')
  29
  30 m4_ifdef(`CTRL_MPEG_L',,`
  31         m4_errprint(`SHIFTER_PRESCALER was not defined with a supported value
  32 ')      m4_m4exit(`1')
  33 ')
  34
  35 m4_divert(`0')m4_dnl
  36
  37 init:
  38         A.H = 0
  39
  40         A.L = 0
  41
  42         DR_MPEG = A     ; TDI and TCK start out low
  43         DR_CARD = A     ; TMS starts out low
  44
  45         A.L = 0x6
  46
  47         CTRL_FCI = A    ; MPEG and CARD driven by FCI
  48         DDR_MPEG = A    ; TDI and TCK are outputs
  49
  50         A.L = 0x1
  51
  52         X = A           ; X == 1
  53         DDR_CARD = A    ; TMS is output
  54
  55         A.L = CTRL_MPEG_L
  56         CTRL_MPEG = A
  57 m4_ifdef(`CTRL_CARD_L',
  58 `       A.L = 'CTRL_CARD_L`
  59 ')m4_dnl
  60         CTRL_CARD = A
  61
  62         STATUS STOP