board/mpl/vcma9/vcma9.c

   1 /*
   2  * (C) Copyright 2002
   3  * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
   4  * Marius Groeger <mgroeger@sysgo.de>
   5  *
   6  * (C) Copyright 2002, 2010
   7  * David Mueller, ELSOFT AG, <d.mueller@elsoft.ch>
   8  *
   9  * SPDX-License-Identifier:     GPL-2.0+
  10  */
  11
  12 #include <common.h>
  13 #include <netdev.h>
  14 #include <i2c.h>
  15 #include <asm/io.h>
  16 #include <asm/arch/s3c24x0_cpu.h>
  17
  18 #include "vcma9.h"
  19 #include "../common/common_util.h"
  20
  21 DECLARE_GLOBAL_DATA_PTR;
  22
  23 /*
  24  * Miscellaneous platform dependent initialisations
  25  */
  26
  27 int board_early_init_f(void)
  28 {
  29         struct s3c24x0_gpio * const gpio = s3c24x0_get_base_gpio();
  30
  31         /* set up the I/O ports */
  32         writel(0x007FFFFF, &gpio->gpacon);
  33         writel(0x002AAAAA, &gpio->gpbcon);
  34         writel(0x000002BF, &gpio->gpbup);
  35         writel(0xAAAAAAAA, &gpio->gpccon);
  36         writel(0x0000FFFF, &gpio->gpcup);
  37         writel(0xAAAAAAAA, &gpio->gpdcon);
  38         writel(0x0000FFFF, &gpio->gpdup);
  39         writel(0xAAAAAAAA, &gpio->gpecon);
  40         writel(0x000037F7, &gpio->gpeup);
  41         writel(0x00000000, &gpio->gpfcon);
  42         writel(0x00000000, &gpio->gpfup);
  43         writel(0xFFEAFF5A, &gpio->gpgcon);
  44         writel(0x0000F0DC, &gpio->gpgup);
  45         writel(0x0028AAAA, &gpio->gphcon);
  46         writel(0x00000656, &gpio->gphup);
  47
  48         /* setup correct IRQ modes for NIC (rising edge mode) */
  49         writel((readl(&gpio->extint2) & ~(7<<8)) | (4<<8),  &gpio->extint2);
  50
  51         /* select USB port 2 to be host or device (setup as host for now) */
  52         writel(readl(&gpio->misccr) | 0x08, &gpio->misccr);
  53
  54         return 0;
  55 }
  56
  57 int board_init(void)
  58 {
  59         /* adress of boot parameters */
  60         gd->bd->bi_boot_params = 0x30000100;
  61
  62         icache_enable();
  63         dcache_enable();
  64
  65         return 0;
  66 }
  67
  68 /*
  69  * Get some Board/PLD Info
  70  */
  71
  72 static u8 get_pld_reg(enum vcma9_pld_regs reg)
  73 {
  74         return readb(VCMA9_PLD_BASE + reg);
  75 }
  76
  77 static u8 get_pld_version(void)
  78 {
  79         return (get_pld_reg(VCMA9_PLD_ID) >> 4) & 0x0F;
  80 }
  81
  82 static u8 get_pld_revision(void)
  83 {
  84         return get_pld_reg(VCMA9_PLD_ID) & 0x0F;
  85 }
  86
  87 static uchar get_board_pcb(void)
  88 {
  89         return ((get_pld_reg(VCMA9_PLD_BOARD) >> 4) & 0x03) + 'A';
  90 }
  91
  92 static u8 get_nr_chips(void)
  93 {
  94         switch ((get_pld_reg(VCMA9_PLD_SDRAM) >> 4) & 0x0F) {
  95                 case 0: return 4;
  96                 case 1: return 1;
  97                 case 2: return 2;
  98                 default: return 0;
  99         }
 100 }
 101
 102 static ulong get_chip_size(void)
 103 {
 104         switch (get_pld_reg(VCMA9_PLD_SDRAM) & 0x0F) {
 105                 case 0: return 16 * (1024*1024);
 106                 case 1: return 32 * (1024*1024);
 107                 case 2: return  8 * (1024*1024);
 108                 case 3: return  8 * (1024*1024);
 109                 default: return 0;
 110         }
 111 }
 112
 113 static const char *get_chip_geom(void)
 114 {
 115         switch (get_pld_reg(VCMA9_PLD_SDRAM) & 0x0F) {
 116                 case 0: return "4Mx8x4";
 117                 case 1: return "8Mx8x4";
 118                 case 2: return "2Mx8x4";
 119                 case 3: return "4Mx8x2";
 120                 default: return "unknown";
 121         }
 122 }
 123
 124 static void vcma9_show_info(char *board_name, char *serial)
 125 {
 126         printf("Board: %s SN: %s  PCB Rev: %c PLD(%d,%d)\n",
 127                 board_name, serial,
 128                 get_board_pcb(), get_pld_version(), get_pld_revision());
 129         printf("SDRAM: %d chips %s\n", get_nr_chips(), get_chip_geom());
 130 }
 131
 132 int dram_init(void)
 133 {
 134         /* dram_init must store complete ramsize in gd->ram_size */
 135         gd->ram_size = get_chip_size() * get_nr_chips();
 136         return 0;
 137 }
 138
 139 /*
 140  * Check Board Identity:
 141  */
 142
 143 int checkboard(void)
 144 {
 145         char s[50];
 146         int i;
 147         backup_t *b = (backup_t *) s;
 148
 149         i = getenv_f("serial#", s, 32);
 150         if ((i < 0) || strncmp (s, "VCMA9", 5)) {
 151                 get_backup_values (b);
 152                 if (strncmp (b->signature, "MPL\0", 4) != 0) {
 153                         puts ("### No HW ID - assuming VCMA9");
 154                 } else {
 155                         b->serial_name[5] = 0;
 156                         vcma9_show_info(b->serial_name, &b->serial_name[6]);
 157                 }
 158         } else {
 159                 s[5] = 0;
 160                 vcma9_show_info(s, &s[6]);
 161         }
 162
 163         return 0;
 164 }
 165
 166 int board_late_init(void)
 167 {
 168         /*
 169          * check if environment is healthy, otherwise restore values
 170          * from shadow copy
 171          */
 172         check_env();
 173         return 0;
 174 }
 175
 176 void vcma9_print_info(void)
 177 {
 178         char *s = getenv("serial#");
 179
 180         if (!s) {
 181                 puts ("### No HW ID - assuming VCMA9");
 182         } else {
 183                 s[5] = 0;
 184                 vcma9_show_info(s, &s[6]);
 185         }
 186 }
 187
 188 #ifdef CONFIG_CMD_NET
 189 int board_eth_init(bd_t *bis)
 190 {
 191         int rc = 0;
 192 #ifdef CONFIG_CS8900
 193         rc = cs8900_initialize(0, CONFIG_CS8900_BASE);
 194 #endif
 195         return rc;
 196 }
 197 #endif
 198
 199 /*
 200  * Hardcoded flash setup:
 201  * Flash 0 is a non-CFI AMD AM29F400BB flash.
 202  */
 203 ulong board_flash_get_legacy(ulong base, int banknum, flash_info_t *info)
 204 {
 205         info->portwidth = FLASH_CFI_16BIT;
 206         info->chipwidth = FLASH_CFI_BY16;
 207         info->interface = FLASH_CFI_X16;
 208         return 1;
 209 }