LXR uboot/board/dave/PPChameleonEVB/flash.c

   1/*
   2 * (C) Copyright 2001
   3 * Stefan Roese, esd gmbh germany, stefan.roese@esd-electronics.com
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8#include <common.h>
   9#include <asm/ppc4xx.h>
  10#include <asm/processor.h>
  11
  12/*
  13 * include common flash code (for esd boards)
  14 */
  15#include "../common/flash.c"
  16
  17/*-----------------------------------------------------------------------
  18 * Functions
  19 */
  20static ulong flash_get_size (vu_long * addr, flash_info_t * info);
  21static void flash_get_offsets (ulong base, flash_info_t * info);
  22
  23/*-----------------------------------------------------------------------
  24 */
  25
  26unsigned long flash_init (void)
  27{
  28#ifdef __DEBUG_START_FROM_SRAM__
  29        return CONFIG_SYS_DUMMY_FLASH_SIZE;
  30#else
  31        unsigned long size;
  32        int i;
  33        uint pbcr;
  34        unsigned long base;
  35        int size_val = 0;
  36
  37        debug("[%s, %d] Entering ...\n", __FUNCTION__, __LINE__);
  38        debug("[%s, %d] flash_info = 0x%p ...\n", __func__, __LINE__,
  39                                                flash_info);
  40
  41        /* Init: no FLASHes known */
  42        for (i=0; i<CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  43                flash_info[i].flash_id = FLASH_UNKNOWN;
  44        }
  45
  46        /* Static FLASH Bank configuration here - FIXME XXX */
  47
  48        debug("[%s, %d] Calling flash_get_size ...\n", __FUNCTION__, __LINE__);
  49        size = flash_get_size((vu_long *)FLASH_BASE0_PRELIM, &flash_info[0]);
  50
  51        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  52                printf ("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  53                        size, size<<20);
  54        }
  55
  56        debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
  57
  58        /* Setup offsets */
  59        flash_get_offsets (-size, &flash_info[0]);
  60        debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
  61
  62        /* Re-do sizing to get full correct info */
  63        mtdcr(EBC0_CFGADDR, PB0CR);
  64        pbcr = mfdcr(EBC0_CFGDATA);
  65        mtdcr(EBC0_CFGADDR, PB0CR);
  66        base = -size;
  67        switch (size) {
  68        case 1 << 20:
  69                size_val = 0;
  70                break;
  71        case 2 << 20:
  72                size_val = 1;
  73                break;
  74        case 4 << 20:
  75                size_val = 2;
  76                break;
  77        case 8 << 20:
  78                size_val = 3;
  79                break;
  80        case 16 << 20:
  81                size_val = 4;
  82                break;
  83        }
  84        pbcr = (pbcr & 0x0001ffff) | base | (size_val << 17);
  85        mtdcr(EBC0_CFGDATA, pbcr);
  86        debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
  87
  88        /* Monitor protection ON by default */
  89        (void)flash_protect(FLAG_PROTECT_SET,
  90                            -CONFIG_SYS_MONITOR_LEN,
  91                            0xffffffff,
  92                            &flash_info[0]);
  93
  94        debug("[%s, %d] Test point ...\n", __FUNCTION__, __LINE__);
  95        flash_info[0].size  = size;
  96
  97        return (size);
  98#endif
  99}
 100