arch/powerpc/cpu/ppc4xx/ecc.h

   1 /*
   2  *    Copyright (c) 2008 Nuovation System Designs, LLC
   3  *      Grant Erickson <gerickson@nuovations.com>
   4  *
   5  *    Copyright (c) 2007-2009 DENX Software Engineering, GmbH
   6  *      Stefan Roese <sr@denx.de>
   7  *
   8  * SPDX-License-Identifier:     GPL-2.0+
   9  *
  10  *    Description:
  11  *      This file implements ECC initialization for PowerPC processors
  12  *      using the IBM SDRAM DDR1 & DDR2 controller.
  13  */
  14
  15 #ifndef _ECC_H_
  16 #define _ECC_H_
  17
  18 /*
  19  * Since the IBM DDR controller used on 440GP/GX/EP/GR is not register
  20  * compatible to the IBM DDR/2 controller used on 405EX/440SP/SPe/460EX/GT
  21  * we need to make some processor dependant defines used later on by the
  22  * driver.
  23  */
  24
  25 /* For 440GP/GX/EP/GR */
  26 #if defined(CONFIG_SDRAM_PPC4xx_IBM_DDR)
  27 #define SDRAM_MCOPT1            SDRAM_CFG0
  28 #define SDRAM_MCOPT1_MCHK_MASK  SDRAM_CFG0_MCHK_MASK
  29 #define SDRAM_MCOPT1_MCHK_NON   SDRAM_CFG0_MCHK_NON
  30 #define SDRAM_MCOPT1_MCHK_GEN   SDRAM_CFG0_MCHK_GEN
  31 #define SDRAM_MCOPT1_MCHK_CHK   SDRAM_CFG0_MCHK_CHK
  32 #define SDRAM_MCOPT1_MCHK_CHK_REP SDRAM_CFG0_MCHK_CHK
  33 #define SDRAM_MCOPT1_DMWD_MASK  SDRAM_CFG0_DMWD_MASK
  34 #define SDRAM_MCOPT1_DMWD_32    SDRAM_CFG0_DMWD_32
  35
  36 #define SDRAM_MCSTAT            SDRAM0_MCSTS
  37 #define SDRAM_MCSTAT_IDLE_MASK  SDRAM_MCSTS_CIS
  38 #define SDRAM_MCSTAT_IDLE_NOT   SDRAM_MCSTS_IDLE_NOT
  39
  40 #define SDRAM_ECCES             SDRAM0_ECCESR
  41 #endif
  42
  43 void ecc_init(unsigned long * const start, unsigned long size);
  44 void do_program_ecc(unsigned long tlb_word2_i_value);
  45
  46 static void inline blank_string(int size)
  47 {
  48         int i;
  49
  50         for (i = 0; i < size; i++)
  51                 putc('\b');
  52         for (i = 0; i < size; i++)
  53                 putc(' ');
  54         for (i = 0; i < size; i++)
  55                 putc('\b');
  56 }
  57
  58 #endif /* _ECC_H_ */