git.sur5r.net Git - u-boot/blob - board/imgtec/boston/lowlevel_init.S

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  * Copyright (C) 2016 Imagination Technologies
   4  */
   5
   6 #include <config.h>
   7
   8 #include <asm/addrspace.h>
   9 #include <asm/asm.h>
  10 #include <asm/mipsregs.h>
  11 #include <asm/regdef.h>
  12
  13 #include "boston-regs.h"
  14
  15 .data
  16
  17 msg_ddr_cal:    .ascii "DDR Cal "
  18 msg_ddr_ok:     .ascii "DDR OK  "
  19
  20 .text
  21
  22 LEAF(lowlevel_init)
  23         move    s0, ra
  24
  25         PTR_LA  a0, msg_ddr_cal
  26         bal     lowlevel_display
  27
  28         PTR_LI  t0, BOSTON_PLAT_DDR3STAT
  29 1:      lw      t1, 0(t0)
  30         andi    t1, t1, BOSTON_PLAT_DDR3STAT_CALIB
  31         beqz    t1, 1b
  32
  33         PTR_LA  a0, msg_ddr_ok
  34         bal     lowlevel_display
  35
  36         jr      s0
  37         END(lowlevel_init)
  38
  39 LEAF(lowlevel_display)
  40         .set    push
  41         .set    noat
  42         PTR_LI  AT, BOSTON_LCD_BASE
  43 #ifdef CONFIG_64BIT
  44         ld      k1, 0(a0)
  45         sd      k1, 0(AT)
  46 #else
  47         lw      k1, 0(a0)
  48         sw      k1, 0(AT)
  49         lw      k1, 4(a0)
  50         sw      k1, 4(AT)
  51 #endif
  52         .set    pop
  53         jr      ra
  54         END(lowlevel_display)