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

   1/*
   2 * (C) Copyright 2004-2005
   3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4 *
   5 * (C) Copyright 2002 Jun Gu <jung@artesyncp.com>
   6 * Add support for Am29F016D and dynamic switch setting.
   7 *
   8 * SPDX-License-Identifier:     GPL-2.0+
   9 */
  10
  11/*
  12 * Modified 4/5/2001
  13 * Wait for completion of each sector erase command issued
  14 * 4/5/2001
  15 * Chris Hallinan - DS4.COM, Inc. - clh@net1plus.com
  16 */
  17
  18#include <common.h>
  19#include <asm/ppc4xx.h>
  20#include <asm/processor.h>
  21#include <asm/ppc440.h>
  22#include "bamboo.h"
  23
  24#undef DEBUG
  25
  26#ifdef DEBUG
  27#define DEBUGF(x...) printf(x)
  28#else
  29#define DEBUGF(x...)
  30#endif                          /* DEBUG */
  31
  32flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips        */
  33
  34/*
  35 * Mark big flash bank (16 bit instead of 8 bit access) in address with bit 0
  36 */
  37static unsigned long flash_addr_table[][CONFIG_SYS_MAX_FLASH_BANKS] = {
  38        {0x87800001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
  39        {0x00000000, 0x00000000, 0x00000000}, /* 1:boot from pci 66      */
  40        {0x87800001, 0x00000000, 0x00000000}, /* 0:boot from nand flash  */
  41        {0x87F00000, 0x87F80000, 0xFFC00001}, /* 3:boot from big flash 33*/
  42        {0x87F00000, 0x87F80000, 0xFFC00001}, /* 4:boot from big flash 66*/
  43        {0x00000000, 0x00000000, 0x00000000}, /* 5:boot from             */
  44        {0x00000000, 0x00000000, 0x00000000}, /* 6:boot from pci 66      */
  45        {0x00000000, 0x00000000, 0x00000000}, /* 7:boot from             */
  46        {0x87C00001, 0xFFF00000, 0xFFF80000}, /* 0:boot from small flash */
  47};
  48
  49/*
  50 * include common flash code (for amcc boards)
  51 */
  52#include "../common/flash.c"
  53
  54/*-----------------------------------------------------------------------
  55 * Functions
  56 */
  57static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  58static int write_word(flash_info_t * info, ulong dest, ulong data);
  59
  60/*-----------------------------------------------------------------------
  61 */
  62
  63unsigned long flash_init(void)
  64{
  65        unsigned long total_b = 0;
  66        unsigned long size_b[CONFIG_SYS_MAX_FLASH_BANKS];
  67        unsigned short index = 0;
  68        int i;
  69        unsigned long val;
  70        unsigned long ebc_boot_size;
  71        unsigned long boot_selection;
  72
  73        mfsdr(SDR0_PINSTP, val);
  74        index = (val & SDR0_PSTRP0_BOOTSTRAP_MASK) >> 29;
  75
  76        if ((index == 5) || (index == 7)) {
  77                /*
  78                 * Boot Settings in IIC EEprom address 0xA8 or 0xA4
  79                 * Read Serial Device Strap Register1 in PPC440EP
  80                 */
  81                mfsdr(SDR0_SDSTP1, val);
  82                boot_selection  = val & SDR0_SDSTP1_BOOT_SEL_MASK;
  83                ebc_boot_size   = val & SDR0_SDSTP1_EBC_ROM_BS_MASK;
  84
  85                switch(boot_selection) {
  86                case SDR0_SDSTP1_BOOT_SEL_EBC:
  87                        switch(ebc_boot_size) {
  88                        case SDR0_SDSTP1_EBC_ROM_BS_16BIT:
  89                                index = 3;
  90                                break;
  91                        case SDR0_SDSTP1_EBC_ROM_BS_8BIT:
  92                                index = 0;
  93                                break;
  94                        }
  95                        break;
  96
  97                case SDR0_SDSTP1_BOOT_SEL_PCI:
  98                        index = 1;
  99                        break;
 100
 101                case SDR0_SDSTP1_BOOT_SEL_NDFC:
 102                        index = 2;
 103                        break;
 104                }
 105        } else if (index == 0) {
 106                if (in8(FPGA_SETTING_REG) & FPGA_SET_REG_OP_CODE_FLASH_ABOVE) {
 107                        index = 8; /* sram below op code flash -> new index 8 */
 108                }
 109        }
 110
 111        DEBUGF("\n");
 112        DEBUGF("FLASH: Index: %d\n", index);
 113
 114        /* Init: no FLASHes known */
 115        for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
 116                flash_info[i].flash_id = FLASH_UNKNOWN;
 117                flash_info[i].sector_count = -1;
 118                flash_info[i].size = 0;
 119
 120                /* check whether the address is 0 */
 121                if (flash_addr_table[index][i] == 0)
 122                        continue;
 123
 124                DEBUGF("Detection bank %d...\n", i);
 125                /* call flash_get_size() to initialize sector address */
 126                size_b[i] = flash_get_size((vu_long *) flash_addr_table[index][i],
 127                                   &flash_info[i]);
 128                flash_info[i].size = size_b[i];
 129                if (flash_info[i].flash_id == FLASH_UNKNOWN) {
 130                        printf("## Unknown FLASH on Bank %d - Size = 0x%08lx = %ld MB\n",
 131                               i, size_b[i], size_b[i] << 20);
 132                        flash_info[i].sector_count = -1;
 133                        flash_info[i].size = 0;
 134                }
 135
 136                /* Monitor protection ON by default */
 137                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_SYS_MONITOR_BASE,
 138                                    CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
 139                                    &flash_info[i]);
 140#if defined(CONFIG_ENV_IS_IN_FLASH)
 141                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
 142                                    CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
 143                                    &flash_info[i]);
 144#if defined(CONFIG_ENV_IS_IN_FLASH) && defined(CONFIG_ENV_ADDR_REDUND)
 145                (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
 146                                    CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
 147                                    &flash_info[i]);
 148#endif
 149#endif
 150
 151                total_b += flash_info[i].size;
 152        }
 153
 154        return total_b;
 155}
 156