debug-macro.S 1.1 KB

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  1. /*
  2. * include/asm-arm/arch-at91/debug-macro.S
  3. *
  4. * Copyright (C) 2003-2005 SAN People
  5. *
  6. * Debugging macro include header
  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. #include <asm/hardware.h>
  14. #include <asm/arch/at91_dbgu.h>
  15. .macro addruart,rx
  16. mrc p15, 0, \rx, c1, c0
  17. tst \rx, #1 @ MMU enabled?
  18. ldreq \rx, =(AT91_BASE_SYS + AT91_DBGU) @ System peripherals (phys address)
  19. ldrne \rx, =(AT91_VA_BASE_SYS + AT91_DBGU) @ System peripherals (virt address)
  20. .endm
  21. .macro senduart,rd,rx
  22. strb \rd, [\rx, #(AT91_DBGU_THR - AT91_DBGU)] @ Write to Transmitter Holding Register
  23. .endm
  24. .macro waituart,rd,rx
  25. 1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register
  26. tst \rd, #AT91_DBGU_TXRDY @ DBGU_TXRDY = 1 when ready to transmit
  27. beq 1001b
  28. .endm
  29. .macro busyuart,rd,rx
  30. 1001: ldr \rd, [\rx, #(AT91_DBGU_SR - AT91_DBGU)] @ Read Status Register
  31. tst \rd, #AT91_DBGU_TXEMPTY @ DBGU_TXEMPTY = 1 when transmission complete
  32. beq 1001b
  33. .endm