tools/misc/arm/ipdfetch.S

   1
   2 .text
   3 .global _start
   4
   5 _start:
   6         mov     r1, #0x80000000         // UART2 base
   7         orr     r1, r1, #0x008d0000
   8         mov     r2, #0x07
   9         str     r2, [r1,#0x10]          /* 115200 baud */
  10         mov     r2, #0x00
  11         str     r2, [r1,#0xc]
  12         mov     r2, #0x60
  13         str     r2, [r1,#0x8]           /* 8,n,1 */
  14         mov     r2, #0x01
  15         str     r2, [r1,#014]           /* Enable UART engine */
  16
  17         mov     r4, #0                  // counter
  18         mov     r5, #0xc0000000         // address
  19         orr     r5, r5, #0x00001000
  20         mov     r3, #0x10               // RXEMPTY bit (in FR register)
  21 1:
  22         ldr     r2, [r1,#0x18]
  23         tst     r2, r3
  24         bne     1b
  25
  26         ldr     r2, [r1,#0]
  27         strb    r2, [r5]
  28         add     r5, r5, #1
  29         add     r4, r4, #1
  30         b       1b
  31