LXR uboot/board/amcc/walnut/flash.c

   1/*
   2 * (C) Copyright 2000-2005
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8/*
   9 * Modified 4/5/2001
  10 * Wait for completion of each sector erase command issued
  11 * 4/5/2001
  12 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  13 */
  14
  15#include <common.h>
  16#include <asm/ppc4xx.h>
  17#include <asm/processor.h>
  18
  19#undef DEBUG
  20#ifdef DEBUG
  21#define DEBUGF(x...) printf(x)
  22#else
  23#define DEBUGF(x...)
  24#endif                          /* DEBUG */
  25
  26/*
  27 * include common flash code (for amcc boards)
  28 */
  29#include "../common/flash.c"
  30
  31/*-----------------------------------------------------------------------
  32 * Functions
  33 */
  34static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  35static void flash_get_offsets(ulong base, flash_info_t * info);
  36
  37unsigned long flash_init(void)
  38{
  39        unsigned long size_b0, size_b1;
  40        int i;
  41        uint pbcr;
  42        unsigned long base_b0, base_b1;
  43
  44        /* Init: no FLASHes known */
  45        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  46                flash_info[i].flash_id = FLASH_UNKNOWN;
  47        }
  48
  49        /* Static FLASH Bank configuration here - FIXME XXX */
  50
  51        size_b0 =
  52            flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
  53
  54        if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  55                printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  56                       size_b0, size_b0 << 20);
  57        }
  58
  59        /* Only one bank */
  60        if (CONFIG_SYS_MAX_FLASH_BANKS == 1) {
  61                /* Setup offsets */
  62                flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]);
  63
  64                /* Monitor protection ON by default */
  65                (void)flash_protect(FLAG_PROTECT_SET,
  66                                    CONFIG_SYS_MONITOR_BASE,
  67                                    CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
  68                                    &flash_info[0]);
  69#ifdef CONFIG_ENV_IS_IN_FLASH
  70                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
  71                                    CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
  72                                    &flash_info[0]);
  73                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
  74                                    CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
  75                                    &flash_info[0]);
  76#endif
  77
  78                size_b1 = 0;
  79                flash_info[0].size = size_b0;
  80        } else {
  81                /* 2 banks */
  82                size_b1 =
  83                    flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
  84                                   &flash_info[1]);
  85
  86                /* Re-do sizing to get full correct info */
  87
  88                if (size_b1) {
  89                        mtdcr(EBC0_CFGADDR, PB0CR);
  90                        pbcr = mfdcr(EBC0_CFGDATA);
  91                        mtdcr(EBC0_CFGADDR, PB0CR);
  92                        base_b1 = -size_b1;
  93                        pbcr =
  94                            (pbcr & 0x0001ffff) | base_b1 |
  95                            (((size_b1 / 1024 / 1024) - 1) << 17);
  96                        mtdcr(EBC0_CFGDATA, pbcr);
  97                        /*          printf("PB1CR = %x\n", pbcr); */
  98                }
  99
 100                if (size_b0) {
 101                        mtdcr(EBC0_CFGADDR, PB1CR);
 102                        pbcr = mfdcr(EBC0_CFGDATA);
 103                        mtdcr(EBC0_CFGADDR, PB1CR);
 104                        base_b0 = base_b1 - size_b0;
 105                        pbcr =
 106                            (pbcr & 0x0001ffff) | base_b0 |
 107                            (((size_b0 / 1024 / 1024) - 1) << 17);
 108                        mtdcr(EBC0_CFGDATA, pbcr);
 109                        /*            printf("PB0CR = %x\n", pbcr); */
 110                }
 111
 112                size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]);
 113
 114                flash_get_offsets(base_b0, &flash_info[0]);
 115
 116                /* monitor protection ON by default */
 117                (void)flash_protect(FLAG_PROTECT_SET,
 118                                    base_b0 + size_b0 - monitor_flash_len,
 119                                    base_b0 + size_b0 - 1, &flash_info[0]);
 120
 121                if (size_b1) {
 122                        /* Re-do sizing to get full correct info */
 123                        size_b1 =
 124                            flash_get_size((vu_long *) base_b1, &flash_info[1]);
 125
 126                        flash_get_offsets(base_b1, &flash_info[1]);
 127
 128                        /* monitor protection ON by default */
 129                        (void)flash_protect(FLAG_PROTECT_SET,
 130                                            base_b1 + size_b1 -
 131                                            monitor_flash_len,
 132                                            base_b1 + size_b1 - 1,
 133                                            &flash_info[1]);
 134                        /* monitor protection OFF by default (one is enough) */
 135                        (void)flash_protect(FLAG_PROTECT_CLEAR,
 136                                            base_b0 + size_b0 -
 137                                            monitor_flash_len,
 138                                            base_b0 + size_b0 - 1,
 139                                            &flash_info[0]);
 140                } else {
 141                        flash_info[1].flash_id = FLASH_UNKNOWN;
 142                        flash_info[1].sector_count = -1;
 143                }
 144
 145                flash_info[0].size = size_b0;
 146                flash_info[1].size = size_b1;
 147        }                       /* else 2 banks */
 148        return (size_b0 + size_b1);
 149}
 150
 151
 152static void flash_get_offsets(ulong base, flash_info_t * info)
 153{
 154        int i;
 155
 156        /* set up sector start address table */
 157        if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 158            (info->flash_id == FLASH_AM040)) {
 159                for (i = 0; i < info->sector_count; i++)
 160                        info->start[i] = base + (i * 0x00010000);
 161        } else {
 162                if (info->flash_id & FLASH_BTYPE) {
 163                        /* set sector offsets for bottom boot block type        */
 164                        info->start[0] = base + 0x00000000;
 165                        info->start[1] = base + 0x00004000;
 166                        info->start[2] = base + 0x00006000;
 167                        info->start[3] = base + 0x00008000;
 168                        for (i = 4; i < info->sector_count; i++) {
 169                                info->start[i] =
 170                                    base + (i * 0x00010000) - 0x00030000;
 171                        }
 172                } else {
 173                        /* set sector offsets for top boot block type           */
 174                        i = info->sector_count - 1;
 175                        info->start[i--] = base + info->size - 0x00004000;
 176                        info->start[i--] = base + info->size - 0x00006000;
 177                        info->start[i--] = base + info->size - 0x00008000;
 178                        for (; i >= 0; i--) {
 179                                info->start[i] = base + i * 0x00010000;
 180                        }
 181                }
 182        }
 183}
 184