qemu/roms/u-boot/board/amcc/bubinga/flash.c

   1 /*
   2  * (C) Copyright 2000
   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 flash_info_t flash_info[CONFIG_SYS_MAX_FLASH_BANKS];    /* info for FLASH chips        */
  20
  21 #undef DEBUG
  22 #ifdef DEBUG
  23 #define DEBUGF(x...) printf(x)
  24 #else
  25 #define DEBUGF(x...)
  26 #endif                          /* DEBUG */
  27
  28 /*
  29  * include common flash code (for amcc boards)
  30  */
  31 #include "../common/flash.c"
  32
  33 /*-----------------------------------------------------------------------
  34  * Functions
  35  */
  36 static ulong flash_get_size(vu_long * addr, flash_info_t * info);
  37 static void flash_get_offsets(ulong base, flash_info_t * info);
  38
  39 unsigned long flash_init(void)
  40 {
  41         unsigned long size_b0, size_b1;
  42         int i;
  43         uint pbcr;
  44         unsigned long base_b0, base_b1;
  45
  46         /* Init: no FLASHes known */
  47         for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; ++i) {
  48                 flash_info[i].flash_id = FLASH_UNKNOWN;
  49         }
  50
  51         /* Static FLASH Bank configuration here - FIXME XXX */
  52
  53         size_b0 =
  54             flash_get_size((vu_long *) FLASH_BASE0_PRELIM, &flash_info[0]);
  55
  56         if (flash_info[0].flash_id == FLASH_UNKNOWN) {
  57                 printf("## Unknown FLASH on Bank 0 - Size = 0x%08lx = %ld MB\n",
  58                        size_b0, size_b0 << 20);
  59         }
  60
  61         /* Only one bank */
  62         if (CONFIG_SYS_MAX_FLASH_BANKS == 1) {
  63                 /* Setup offsets */
  64                 flash_get_offsets(FLASH_BASE0_PRELIM, &flash_info[0]);
  65
  66                 /* Monitor protection ON by default */
  67                 (void)flash_protect(FLAG_PROTECT_SET,
  68                                     CONFIG_SYS_MONITOR_BASE,
  69                                     CONFIG_SYS_MONITOR_BASE + CONFIG_SYS_MONITOR_LEN - 1,
  70                                     &flash_info[0]);
  71 #ifdef CONFIG_ENV_IS_IN_FLASH
  72                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR,
  73                                     CONFIG_ENV_ADDR + CONFIG_ENV_SECT_SIZE - 1,
  74                                     &flash_info[0]);
  75                 (void)flash_protect(FLAG_PROTECT_SET, CONFIG_ENV_ADDR_REDUND,
  76                                     CONFIG_ENV_ADDR_REDUND + CONFIG_ENV_SECT_SIZE - 1,
  77                                     &flash_info[0]);
  78 #endif
  79
  80                 size_b1 = 0;
  81                 flash_info[0].size = size_b0;
  82         }
  83
  84         /* 2 banks */
  85         else {
  86                 size_b1 =
  87                     flash_get_size((vu_long *) FLASH_BASE1_PRELIM,
  88                                    &flash_info[1]);
  89
  90                 /* Re-do sizing to get full correct info */
  91
  92                 if (size_b1) {
  93                         mtdcr(EBC0_CFGADDR, PB0CR);
  94                         pbcr = mfdcr(EBC0_CFGDATA);
  95                         mtdcr(EBC0_CFGADDR, PB0CR);
  96                         base_b1 = -size_b1;
  97                         pbcr = (pbcr & 0x0001ffff) | base_b1 |
  98                             (((size_b1 / 1024 / 1024) - 1) << 17);
  99                         mtdcr(EBC0_CFGDATA, pbcr);
 100                         /*          printf("PB1CR = %x\n", pbcr); */
 101                 }
 102
 103                 if (size_b0) {
 104                         mtdcr(EBC0_CFGADDR, PB1CR);
 105                         pbcr = mfdcr(EBC0_CFGDATA);
 106                         mtdcr(EBC0_CFGADDR, PB1CR);
 107                         base_b0 = base_b1 - size_b0;
 108                         pbcr = (pbcr & 0x0001ffff) | base_b0 |
 109                             (((size_b0 / 1024 / 1024) - 1) << 17);
 110                         mtdcr(EBC0_CFGDATA, pbcr);
 111                         /*            printf("PB0CR = %x\n", pbcr); */
 112                 }
 113
 114                 size_b0 = flash_get_size((vu_long *) base_b0, &flash_info[0]);
 115
 116                 flash_get_offsets(base_b0, &flash_info[0]);
 117
 118                 /* monitor protection ON by default */
 119                 (void)flash_protect(FLAG_PROTECT_SET,
 120                                     base_b0 + size_b0 - CONFIG_SYS_MONITOR_LEN,
 121                                     base_b0 + size_b0 - 1, &flash_info[0]);
 122                 /* Also protect sector containing initial power-up instruction */
 123                 /* (flash_protect() checks address range - other call ignored) */
 124                 (void)flash_protect(FLAG_PROTECT_SET,
 125                                     0xFFFFFFFC, 0xFFFFFFFF, &flash_info[0]);
 126                 (void)flash_protect(FLAG_PROTECT_SET,
 127                                     0xFFFFFFFC, 0xFFFFFFFF, &flash_info[1]);
 128
 129                 if (size_b1) {
 130                         /* Re-do sizing to get full correct info */
 131                         size_b1 =
 132                             flash_get_size((vu_long *) base_b1, &flash_info[1]);
 133
 134                         flash_get_offsets(base_b1, &flash_info[1]);
 135
 136                         /* monitor protection ON by default */
 137                         (void)flash_protect(FLAG_PROTECT_SET,
 138                                             base_b1 + size_b1 - CONFIG_SYS_MONITOR_LEN,
 139                                             base_b1 + size_b1 - 1,
 140                                             &flash_info[1]);
 141                         /* monitor protection OFF by default (one is enough) */
 142                         (void)flash_protect(FLAG_PROTECT_CLEAR,
 143                                             base_b0 + size_b0 - CONFIG_SYS_MONITOR_LEN,
 144                                             base_b0 + size_b0 - 1,
 145                                             &flash_info[0]);
 146                 } else {
 147                         flash_info[1].flash_id = FLASH_UNKNOWN;
 148                         flash_info[1].sector_count = -1;
 149                 }
 150
 151                 flash_info[0].size = size_b0;
 152                 flash_info[1].size = size_b1;
 153         }                       /* else 2 banks */
 154         return (size_b0 + size_b1);
 155 }
 156
 157 static void flash_get_offsets(ulong base, flash_info_t * info)
 158 {
 159         int i;
 160
 161         /* set up sector start address table */
 162         if (((info->flash_id & FLASH_VENDMASK) == FLASH_MAN_SST) ||
 163             (info->flash_id == FLASH_AM040)) {
 164                 for (i = 0; i < info->sector_count; i++)
 165                         info->start[i] = base + (i * 0x00010000);
 166         } else {
 167                 if (info->flash_id & FLASH_BTYPE) {
 168                         /* set sector offsets for bottom boot block type        */
 169                         info->start[0] = base + 0x00000000;
 170                         info->start[1] = base + 0x00004000;
 171                         info->start[2] = base + 0x00006000;
 172                         info->start[3] = base + 0x00008000;
 173                         for (i = 4; i < info->sector_count; i++) {
 174                                 info->start[i] =
 175                                     base + (i * 0x00010000) - 0x00030000;
 176                         }
 177                 } else {
 178                         /* set sector offsets for top boot block type           */
 179                         i = info->sector_count - 1;
 180                         info->start[i--] = base + info->size - 0x00004000;
 181                         info->start[i--] = base + info->size - 0x00006000;
 182                         info->start[i--] = base + info->size - 0x00008000;
 183                         for (; i >= 0; i--) {
 184                                 info->start[i] = base + i * 0x00010000;
 185                         }
 186                 }
 187         }
 188 }