board/mvblue/mvblue.c

   1 /*
   2  * GNU General Public License for more details.
   3  *
   4  * MATRIX Vision GmbH / June 2002-Nov 2003
   5  * Andre Schwarz
   6  */
   7
   8 #include <common.h>
   9 #include <mpc824x.h>
  10 #include <asm/io.h>
  11 #include <ns16550.h>
  12
  13 #ifdef CONFIG_PCI
  14 #include <pci.h>
  15 #endif
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 u32 get_BoardType (void);
  20
  21 #define PCI_CONFIG(b,d,f,r)    cpu_to_le32(0x80000000 | ((b&0xff)<<16) \
  22                                                       | ((d&0x1f)<<11) \
  23                                                       | ((f&0x7)<<7)   \
  24                                                       | (r&0xfc) )
  25
  26 int mv_pci_read (int bus, int dev, int func, int reg)
  27 {
  28         *(u32 *) (0xfec00cf8) = PCI_CONFIG (bus, dev, func, reg);
  29         asm ("sync");
  30         return cpu_to_le32 (*(u32 *) (0xfee00cfc));
  31 }
  32
  33 u32 get_BoardType ()
  34 {
  35         return (mv_pci_read (0, 0xe, 0, 0) == 0x06801095 ? 0 : 1);
  36 }
  37
  38 void init_2nd_DUART (void)
  39 {
  40         NS16550_t console = (NS16550_t) CFG_NS16550_COM2;
  41         int clock_divisor = CFG_NS16550_CLK / 16 / CONFIG_BAUDRATE;
  42
  43         *(u8 *) (0xfc004511) = 0x1;
  44         NS16550_init (console, clock_divisor);
  45 }
  46 void hw_watchdog_reset (void)
  47 {
  48         if (get_BoardType () == 0) {
  49                 *(u32 *) (0xff000005) = 0;
  50                 asm ("sync");
  51         }
  52 }
  53 int checkboard (void)
  54 {
  55         ulong busfreq = get_bus_freq (0);
  56         char buf[32];
  57         u32 BoardType = get_BoardType ();
  58         char *BoardName[2] = { "mvBlueBOX", "mvBlueLYNX" };
  59         char *p;
  60         bd_t *bd = gd->bd;
  61
  62         hw_watchdog_reset ();
  63
  64         printf ("U-Boot (%s) running on mvBLUE device.\n", MV_VERSION);
  65         printf ("       Found %s running at %s MHz memory clock.\n",
  66                 BoardName[BoardType], strmhz (buf, busfreq));
  67
  68         init_2nd_DUART ();
  69
  70         if ((p = getenv ("console_nr")) != NULL) {
  71                 unsigned long con_nr = simple_strtoul (p, NULL, 10) & 3;
  72
  73                 bd->bi_baudrate &= ~3;
  74                 bd->bi_baudrate |= con_nr & 3;
  75         }
  76         return 0;
  77 }
  78
  79 long int initdram (int board_type)
  80 {
  81         long size;
  82         long new_bank0_end;
  83         long mear1;
  84         long emear1;
  85
  86         size = get_ram_size(CFG_SDRAM_BASE, CFG_MAX_RAM_SIZE);
  87
  88         new_bank0_end = size - 1;
  89         mear1 = mpc824x_mpc107_getreg(MEAR1);
  90         emear1 = mpc824x_mpc107_getreg(EMEAR1);
  91         mear1 = (mear1  & 0xFFFFFF00) |
  92                 ((new_bank0_end & MICR_ADDR_MASK) >> MICR_ADDR_SHIFT);
  93         emear1 = (emear1 & 0xFFFFFF00) |
  94                 ((new_bank0_end & MICR_ADDR_MASK) >> MICR_EADDR_SHIFT);
  95         mpc824x_mpc107_setreg(MEAR1,  mear1);
  96         mpc824x_mpc107_setreg(EMEAR1, emear1);
  97
  98         return (size);
  99 }
 100
 101 /* ------------------------------------------------------------------------- */
 102 u8 *dhcp_vendorex_prep (u8 * e)
 103 {
 104         char *ptr;
 105
 106         /* DHCP vendor-class-identifier = 60 */
 107         if ((ptr = getenv ("dhcp_vendor-class-identifier"))) {
 108                 *e++ = 60;
 109                 *e++ = strlen (ptr);
 110                 while (*ptr)
 111                         *e++ = *ptr++;
 112         }
 113         /* my DHCP_CLIENT_IDENTIFIER = 61 */
 114         if ((ptr = getenv ("dhcp_client_id"))) {
 115                 *e++ = 61;
 116                 *e++ = strlen (ptr);
 117                 while (*ptr)
 118                         *e++ = *ptr++;
 119         }
 120         return e;
 121 }
 122
 123 u8 *dhcp_vendorex_proc (u8 * popt)
 124 {
 125         return NULL;
 126 }
 127
 128 /* ------------------------------------------------------------------------- */
 129
 130 /*
 131  * Initialize PCI Devices
 132  */
 133 #ifdef CONFIG_PCI
 134 void pci_mvblue_clear_base (struct pci_controller *hose, pci_dev_t dev)
 135 {
 136         u32 cnt;
 137
 138         printf ("clear base @ dev/func 0x%02x/0x%02x ... ", PCI_DEV (dev),
 139                 PCI_FUNC (dev));
 140         for (cnt = 0; cnt < 6; cnt++)
 141                 pci_hose_write_config_dword (hose, dev, 0x10 + (4 * cnt),
 142                                              0x0);
 143         printf ("done\n");
 144 }
 145
 146 void duart_setup (u32 base, u16 divisor)
 147 {
 148         printf ("duart setup ...");
 149         out_8 ((u8 *) (CFG_ISA_IO + base + 3), 0x80);
 150         out_8 ((u8 *) (CFG_ISA_IO + base + 0), divisor & 0xff);
 151         out_8 ((u8 *) (CFG_ISA_IO + base + 1), divisor >> 8);
 152         out_8 ((u8 *) (CFG_ISA_IO + base + 3), 0x03);
 153         out_8 ((u8 *) (CFG_ISA_IO + base + 4), 0x03);
 154         out_8 ((u8 *) (CFG_ISA_IO + base + 2), 0x07);
 155         printf ("done\n");
 156 }
 157
 158 void pci_mvblue_fixup_irq_behind_bridge (struct pci_controller *hose,
 159                                          pci_dev_t bridge, unsigned char irq)
 160 {
 161         pci_dev_t d;
 162         unsigned char bus;
 163         unsigned short vendor, class;
 164
 165         pci_hose_read_config_byte (hose, bridge, PCI_SECONDARY_BUS, &bus);
 166         for (d = PCI_BDF (bus, 0, 0);
 167              d < PCI_BDF (bus, PCI_MAX_PCI_DEVICES - 1,
 168                           PCI_MAX_PCI_FUNCTIONS - 1);
 169              d += PCI_BDF (0, 0, 1)) {
 170                 pci_hose_read_config_word (hose, d, PCI_VENDOR_ID, &vendor);
 171                 if (vendor != 0xffff && vendor != 0x0000) {
 172                         pci_hose_read_config_word (hose, d, PCI_CLASS_DEVICE,
 173                                                    &class);
 174                         if (class == PCI_CLASS_BRIDGE_PCI)
 175                                 pci_mvblue_fixup_irq_behind_bridge (hose, d,
 176                                                                     irq);
 177                         else
 178                                 pci_hose_write_config_byte (hose, d,
 179                                                             PCI_INTERRUPT_LINE,
 180                                                             irq);
 181                 }
 182         }
 183 }
 184
 185 #define MV_MAX_PCI_BUSSES       3
 186 #define SLOT0_IRQ       3
 187 #define SLOT1_IRQ       4
 188 void pci_mvblue_fixup_irq (struct pci_controller *hose, pci_dev_t dev)
 189 {
 190         unsigned char line = 0xff;
 191         unsigned short class;
 192
 193         if (PCI_BUS (dev) == 0) {
 194                 switch (PCI_DEV (dev)) {
 195                 case 0xd:
 196                         if (get_BoardType () == 0) {
 197                                 line = 1;
 198                         } else
 199                                 /* mvBL */
 200                                 line = 2;
 201                         break;
 202                 case 0xe:
 203                         /* mvBB: IDE */
 204                         line = 2;
 205                         pci_hose_write_config_byte (hose, dev, 0x8a, 0x20);
 206                         break;
 207                 case 0xf:
 208                         /* mvBB: Slot0 (Grabber) */
 209                         pci_hose_read_config_word (hose, dev,
 210                                                    PCI_CLASS_DEVICE, &class);
 211                         if (class == PCI_CLASS_BRIDGE_PCI) {
 212                                 pci_mvblue_fixup_irq_behind_bridge (hose, dev,
 213                                                                     SLOT0_IRQ);
 214                                 line = 0xff;
 215                         } else
 216                                 line = SLOT0_IRQ;
 217                         break;
 218                 case 0x10:
 219                         /* mvBB: Slot1 */
 220                         pci_hose_read_config_word (hose, dev,
 221                                                    PCI_CLASS_DEVICE, &class);
 222                         if (class == PCI_CLASS_BRIDGE_PCI) {
 223                                 pci_mvblue_fixup_irq_behind_bridge (hose, dev,
 224                                                                     SLOT1_IRQ);
 225                                 line = 0xff;
 226                         } else
 227                                 line = SLOT1_IRQ;
 228                         break;
 229                 default:
 230                         printf ("***pci_scan: illegal dev = 0x%08x\n",
 231                                 PCI_DEV (dev));
 232                         line = 0xff;
 233                         break;
 234                 }
 235                 pci_hose_write_config_byte (hose, dev, PCI_INTERRUPT_LINE,
 236                                             line);
 237         }
 238 }
 239
 240 struct pci_controller hose = {
 241         fixup_irq:pci_mvblue_fixup_irq
 242 };
 243
 244 void pci_init_board (void)
 245 {
 246         pci_mpc824x_init (&hose);
 247 }
 248 #endif