root/arch/arm/include/debug/clps711x.S

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (C) 2014 Alexander Shiyan <shc_work@mail.ru>
   4  */
   5 
   6 #ifndef CONFIG_DEBUG_CLPS711X_UART2
   7 #define CLPS711X_UART_PADDR     (0x80000000 + 0x0000)
   8 #define CLPS711X_UART_VADDR     (0xfeff4000 + 0x0000)
   9 #else
  10 #define CLPS711X_UART_PADDR     (0x80000000 + 0x1000)
  11 #define CLPS711X_UART_VADDR     (0xfeff4000 + 0x1000)
  12 #endif
  13 
  14 #define SYSFLG          (0x0140)
  15 #define SYSFLG_UBUSY    (1 << 11)
  16 #define UARTDR          (0x0480)
  17 
  18         .macro  addruart, rp, rv, tmp
  19         ldr     \rv, =CLPS711X_UART_VADDR
  20         ldr     \rp, =CLPS711X_UART_PADDR
  21         .endm
  22 
  23         .macro  waituart,rd,rx
  24         .endm
  25 
  26         .macro  senduart,rd,rx
  27         str     \rd, [\rx, #UARTDR]
  28         .endm
  29 
  30         .macro  busyuart,rd,rx
  31 1001:   ldr     \rd, [\rx, #SYSFLG]
  32         tst     \rd, #SYSFLG_UBUSY
  33         bne     1001b
  34         .endm