debug-macro.S 1.1 KB

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  1. /* arch/arm/mach-lh7a40x/include/mach/debug-macro.S
  2. *
  3. * Debugging macro include header
  4. *
  5. * Copyright (C) 1994-1999 Russell King
  6. * Moved from linux/arch/arm/kernel/debug.S by Ben Dooks
  7. *
  8. * This program is free software; you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License version 2 as
  10. * published by the Free Software Foundation.
  11. *
  12. */
  13. @ It is not known if this will be appropriate for every 40x
  14. @ board.
  15. .macro addruart, rp, rv
  16. mov \rp, #0x00000700 @ offset from base
  17. orr \rv, \rp, #0xf8000000 @ virtual base
  18. orr \rp, \rp, #0x80000000 @ physical base
  19. .endm
  20. .macro senduart,rd,rx
  21. strb \rd, [\rx] @ DATA
  22. .endm
  23. .macro busyuart,rd,rx @ spin while busy
  24. 1001: ldr \rd, [\rx, #0x10] @ STATUS
  25. tst \rd, #1 << 3 @ BUSY (TX FIFO not empty)
  26. bne 1001b @ yes, spin
  27. .endm
  28. .macro waituart,rd,rx @ wait for Tx FIFO room
  29. 1001: ldrb \rd, [\rx, #0x10] @ STATUS
  30. tst \rd, #1 << 5 @ TXFF (TX FIFO full)
  31. bne 1001b @ yes, spin
  32. .endm