arch/ppc/platforms/mpc885ads_setup.c

   1 /*arch/ppc/platforms/mpc885ads-setup.c
   2  *
   3  * Platform setup for the Freescale mpc885ads board
   4  *
   5  * Vitaly Bordug <vbordug@ru.mvista.com>
   6  *
   7  * Copyright 2005 MontaVista Software Inc.
   8  *
   9  * This file is licensed under the terms of the GNU General Public License
  10  * version 2. This program is licensed "as is" without any warranty of any
  11  * kind, whether express or implied.
  12  */
  13
  14 #include <linux/init.h>
  15 #include <linux/module.h>
  16 #include <linux/param.h>
  17 #include <linux/string.h>
  18 #include <linux/ioport.h>
  19 #include <linux/device.h>
  20
  21 #include <linux/fs_enet_pd.h>
  22 #include <linux/fs_uart_pd.h>
  23 #include <linux/mii.h>
  24
  25 #include <asm/delay.h>
  26 #include <asm/io.h>
  27 #include <asm/machdep.h>
  28 #include <asm/page.h>
  29 #include <asm/processor.h>
  30 #include <asm/system.h>
  31 #include <asm/time.h>
  32 #include <asm/ppcboot.h>
  33 #include <asm/8xx_immap.h>
  34 #include <asm/commproc.h>
  35 #include <asm/ppc_sys.h>
  36
  37 extern unsigned char __res[];
  38 static void setup_smc1_ioports(void);
  39 static void setup_smc2_ioports(void);
  40
  41 static struct fs_mii_fec_platform_info  mpc8xx_mdio_fec_pdata;
  42 static void setup_fec1_ioports(void);
  43 static void setup_fec2_ioports(void);
  44 static void setup_scc3_ioports(void);
  45
  46 static struct fs_uart_platform_info mpc885_uart_pdata[] = {
  47         [fsid_smc1_uart] = {
  48                 .brg            = 1,
  49                 .fs_no          = fsid_smc1_uart,
  50                 .init_ioports   = setup_smc1_ioports,
  51                 .tx_num_fifo    = 4,
  52                 .tx_buf_size    = 32,
  53                 .rx_num_fifo    = 4,
  54                 .rx_buf_size    = 32,
  55         },
  56         [fsid_smc2_uart] = {
  57                 .brg            = 2,
  58                 .fs_no          = fsid_smc2_uart,
  59                 .init_ioports   = setup_smc2_ioports,
  60                 .tx_num_fifo    = 4,
  61                 .tx_buf_size    = 32,
  62                 .rx_num_fifo    = 4,
  63                 .rx_buf_size    = 32,
  64         },
  65 };
  66
  67 static struct fs_platform_info mpc8xx_enet_pdata[] = {
  68         [fsid_fec1] = {
  69          .rx_ring = 128,
  70          .tx_ring = 16,
  71          .rx_copybreak = 240,
  72
  73          .use_napi = 1,
  74          .napi_weight = 17,
  75
  76          .init_ioports = setup_fec1_ioports,
  77
  78           .bus_id = "0:00",
  79           .has_phy = 1,
  80          },
  81         [fsid_fec2] = {
  82              .rx_ring = 128,
  83              .tx_ring = 16,
  84              .rx_copybreak = 240,
  85
  86              .use_napi = 1,
  87              .napi_weight = 17,
  88
  89              .init_ioports = setup_fec2_ioports,
  90
  91              .bus_id = "0:01",
  92              .has_phy = 1,
  93              },
  94         [fsid_scc3] = {
  95                 .rx_ring = 64,
  96                 .tx_ring = 8,
  97                 .rx_copybreak = 240,
  98
  99                 .use_napi = 1,
 100                 .napi_weight = 17,
 101
 102                 .init_ioports = setup_scc3_ioports,
 103 #ifdef CONFIG_FIXED_MII_10_FDX
 104                 .bus_id = "fixed@100:1",
 105 #else
 106                 .bus_id = "0:02",
 107  #endif
 108         },
 109 };
 110
 111 void __init board_init(void)
 112 {
 113         cpm8xx_t *cp = cpmp;
 114         unsigned int *bcsr_io;
 115
 116 #ifdef CONFIG_FS_ENET
 117         immap_t *immap = (immap_t *) IMAP_ADDR;
 118 #endif
 119         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 120
 121         if (bcsr_io == NULL) {
 122                 printk(KERN_CRIT "Could not remap BCSR\n");
 123                 return;
 124         }
 125 #ifdef CONFIG_SERIAL_CPM_SMC1
 126         cp->cp_simode &= ~(0xe0000000 >> 17);   /* brg1 */
 127         clrbits32(bcsr_io, BCSR1_RS232EN_1);
 128         cp->cp_smc[0].smc_smcm |= (SMCM_RX | SMCM_TX);
 129         cp->cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 130 #else
 131         setbits32(bcsr_io,BCSR1_RS232EN_1);
 132         cp->cp_smc[0].smc_smcmr = 0;
 133         cp->cp_smc[0].smc_smce = 0;
 134 #endif
 135
 136 #ifdef CONFIG_SERIAL_CPM_SMC2
 137         cp->cp_simode &= ~(0xe0000000 >> 1);
 138         cp->cp_simode |= (0x20000000 >> 1);     /* brg2 */
 139         clrbits32(bcsr_io,BCSR1_RS232EN_2);
 140         cp->cp_smc[1].smc_smcm |= (SMCM_RX | SMCM_TX);
 141         cp->cp_smc[1].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 142 #else
 143         setbits32(bcsr_io,BCSR1_RS232EN_2);
 144         cp->cp_smc[1].smc_smcmr = 0;
 145         cp->cp_smc[1].smc_smce = 0;
 146 #endif
 147         iounmap(bcsr_io);
 148
 149 #ifdef CONFIG_FS_ENET
 150         /* use MDC for MII (common) */
 151         setbits16(&immap->im_ioport.iop_pdpar, 0x0080);
 152         clrbits16(&immap->im_ioport.iop_pddir, 0x0080);
 153         bcsr_io = ioremap(BCSR5, sizeof(unsigned long));
 154         clrbits32(bcsr_io,BCSR5_MII1_EN);
 155         clrbits32(bcsr_io,BCSR5_MII1_RST);
 156 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
 157         clrbits32(bcsr_io,BCSR5_MII2_EN);
 158         clrbits32(bcsr_io,BCSR5_MII2_RST);
 159 #endif
 160         iounmap(bcsr_io);
 161 #endif
 162 }
 163
 164 static void setup_fec1_ioports(struct fs_platform_info*)
 165 {
 166         immap_t *immap = (immap_t *) IMAP_ADDR;
 167
 168         /* configure FEC1 pins  */
 169         setbits16(&immap->im_ioport.iop_papar, 0xf830);
 170         setbits16(&immap->im_ioport.iop_padir, 0x0830);
 171         clrbits16(&immap->im_ioport.iop_padir, 0xf000);
 172         setbits32(&immap->im_cpm.cp_pbpar, 0x00001001);
 173
 174         clrbits32(&immap->im_cpm.cp_pbdir, 0x00001001);
 175         setbits16(&immap->im_ioport.iop_pcpar, 0x000c);
 176         clrbits16(&immap->im_ioport.iop_pcdir, 0x000c);
 177         setbits32(&immap->im_cpm.cp_pepar, 0x00000003);
 178
 179         setbits32(&immap->im_cpm.cp_pedir, 0x00000003);
 180         clrbits32(&immap->im_cpm.cp_peso, 0x00000003);
 181         clrbits32(&immap->im_cpm.cp_cptr, 0x00000100);
 182 }
 183
 184 static void setup_fec2_ioports(struct fs_platform_info*)
 185 {
 186         immap_t *immap = (immap_t *) IMAP_ADDR;
 187
 188         /* configure FEC2 pins */
 189         setbits32(&immap->im_cpm.cp_pepar, 0x0003fffc);
 190         setbits32(&immap->im_cpm.cp_pedir, 0x0003fffc);
 191         clrbits32(&immap->im_cpm.cp_peso, 0x000087fc);
 192         setbits32(&immap->im_cpm.cp_peso, 0x00037800);
 193         clrbits32(&immap->im_cpm.cp_cptr, 0x00000080);
 194 }
 195
 196 static void setup_scc3_ioports(struct fs_platform_info*)
 197 {
 198         immap_t *immap = (immap_t *) IMAP_ADDR;
 199         unsigned *bcsr_io;
 200
 201         bcsr_io = ioremap(BCSR_ADDR, BCSR_SIZE);
 202
 203         if (bcsr_io == NULL) {
 204                 printk(KERN_CRIT "Could not remap BCSR\n");
 205                 return;
 206         }
 207
 208         /* Enable the PHY.
 209          */
 210         clrbits32(bcsr_io+4, BCSR4_ETH10_RST);
 211         udelay(1000);
 212         setbits32(bcsr_io+4, BCSR4_ETH10_RST);
 213         /* Configure port A pins for Txd and Rxd.
 214          */
 215         setbits16(&immap->im_ioport.iop_papar, PA_ENET_RXD | PA_ENET_TXD);
 216         clrbits16(&immap->im_ioport.iop_padir, PA_ENET_RXD | PA_ENET_TXD);
 217
 218         /* Configure port C pins to enable CLSN and RENA.
 219          */
 220         clrbits16(&immap->im_ioport.iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA);
 221         clrbits16(&immap->im_ioport.iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA);
 222         setbits16(&immap->im_ioport.iop_pcso, PC_ENET_CLSN | PC_ENET_RENA);
 223
 224         /* Configure port E for TCLK and RCLK.
 225          */
 226         setbits32(&immap->im_cpm.cp_pepar, PE_ENET_TCLK | PE_ENET_RCLK);
 227         clrbits32(&immap->im_cpm.cp_pepar, PE_ENET_TENA);
 228         clrbits32(&immap->im_cpm.cp_pedir,
 229                   PE_ENET_TCLK | PE_ENET_RCLK | PE_ENET_TENA);
 230         clrbits32(&immap->im_cpm.cp_peso, PE_ENET_TCLK | PE_ENET_RCLK);
 231         setbits32(&immap->im_cpm.cp_peso, PE_ENET_TENA);
 232
 233         /* Configure Serial Interface clock routing.
 234          * First, clear all SCC bits to zero, then set the ones we want.
 235          */
 236         clrbits32(&immap->im_cpm.cp_sicr, SICR_ENET_MASK);
 237         setbits32(&immap->im_cpm.cp_sicr, SICR_ENET_CLKRT);
 238
 239         /* Disable Rx and Tx. SMC1 sshould be stopped if SCC3 eternet are used.
 240          */
 241         immap->im_cpm.cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 242         /* On the MPC885ADS SCC ethernet PHY is initialized in the full duplex mode
 243          * by H/W setting after reset. SCC ethernet controller support only half duplex.
 244          * This discrepancy of modes causes a lot of carrier lost errors.
 245          */
 246
 247         /* In the original SCC enet driver the following code is placed at
 248            the end of the initialization */
 249         setbits32(&immap->im_cpm.cp_pepar, PE_ENET_TENA);
 250         clrbits32(&immap->im_cpm.cp_pedir, PE_ENET_TENA);
 251         setbits32(&immap->im_cpm.cp_peso, PE_ENET_TENA);
 252
 253         setbits32(bcsr_io+4, BCSR1_ETHEN);
 254         iounmap(bcsr_io);
 255 }
 256
 257 static int mac_count = 0;
 258
 259 static void mpc885ads_fixup_enet_pdata(struct platform_device *pdev, int fs_no)
 260 {
 261         struct fs_platform_info *fpi;
 262         bd_t *bd = (bd_t *) __res;
 263         char *e;
 264         int i;
 265
 266         if(fs_no > ARRAY_SIZE(mpc8xx_enet_pdata)) {
 267                 printk(KERN_ERR"No network-suitable #%d device on bus", fs_no);
 268                 return;
 269         }
 270
 271         fpi = &mpc8xx_enet_pdata[fs_no];
 272
 273         switch (fs_no) {
 274         case fsid_fec1:
 275                 fpi->init_ioports = &setup_fec1_ioports;
 276                 break;
 277         case fsid_fec2:
 278                 fpi->init_ioports = &setup_fec2_ioports;
 279                 break;
 280         case fsid_scc3:
 281                 fpi->init_ioports = &setup_scc3_ioports;
 282                 break;
 283         default:
 284                 printk(KERN_WARNING "Device %s is not supported!\n", pdev->name);
 285                 return;
 286         }
 287
 288         pdev->dev.platform_data = fpi;
 289         fpi->fs_no = fs_no;
 290
 291         e = (unsigned char *)&bd->bi_enetaddr;
 292         for (i = 0; i < 6; i++)
 293                 fpi->macaddr[i] = *e++;
 294
 295         fpi->macaddr[5] += mac_count++;
 296
 297 }
 298
 299 static void mpc885ads_fixup_fec_enet_pdata(struct platform_device *pdev,
 300                                            int idx)
 301 {
 302         /* This is for FEC devices only */
 303         if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-fec")))
 304                 return;
 305         mpc885ads_fixup_enet_pdata(pdev, fsid_fec1 + pdev->id - 1);
 306 }
 307
 308 static void __init mpc885ads_fixup_scc_enet_pdata(struct platform_device *pdev,
 309                                                   int idx)
 310 {
 311         /* This is for SCC devices only */
 312         if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-scc")))
 313                 return;
 314
 315         mpc885ads_fixup_enet_pdata(pdev, fsid_scc1 + pdev->id - 1);
 316 }
 317
 318 static void setup_smc1_ioports(struct fs_uart_platform_info*)
 319 {
 320         immap_t *immap = (immap_t *) IMAP_ADDR;
 321         unsigned *bcsr_io;
 322         unsigned int iobits = 0x000000c0;
 323
 324         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 325
 326         if (bcsr_io == NULL) {
 327                 printk(KERN_CRIT "Could not remap BCSR1\n");
 328                 return;
 329         }
 330         clrbits32(bcsr_io,BCSR1_RS232EN_1);
 331         iounmap(bcsr_io);
 332
 333         setbits32(&immap->im_cpm.cp_pbpar, iobits);
 334         clrbits32(&immap->im_cpm.cp_pbdir, iobits);
 335         clrbits16(&immap->im_cpm.cp_pbodr, iobits);
 336 }
 337
 338 static void setup_smc2_ioports(struct fs_uart_platform_info*)
 339 {
 340         immap_t *immap = (immap_t *) IMAP_ADDR;
 341         unsigned *bcsr_io;
 342         unsigned int iobits = 0x00000c00;
 343
 344         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 345
 346         if (bcsr_io == NULL) {
 347                 printk(KERN_CRIT "Could not remap BCSR1\n");
 348                 return;
 349         }
 350         clrbits32(bcsr_io,BCSR1_RS232EN_2);
 351         iounmap(bcsr_io);
 352
 353 #ifndef CONFIG_SERIAL_CPM_ALT_SMC2
 354         setbits32(&immap->im_cpm.cp_pbpar, iobits);
 355         clrbits32(&immap->im_cpm.cp_pbdir, iobits);
 356         clrbits16(&immap->im_cpm.cp_pbodr, iobits);
 357 #else
 358         setbits16(&immap->im_ioport.iop_papar, iobits);
 359         clrbits16(&immap->im_ioport.iop_padir, iobits);
 360         clrbits16(&immap->im_ioport.iop_paodr, iobits);
 361 #endif
 362 }
 363
 364 static void __init mpc885ads_fixup_uart_pdata(struct platform_device *pdev,
 365                                               int idx)
 366 {
 367         bd_t *bd = (bd_t *) __res;
 368         struct fs_uart_platform_info *pinfo;
 369         int num = ARRAY_SIZE(mpc885_uart_pdata);
 370
 371         int id = fs_uart_id_smc2fsid(idx);
 372
 373         /* no need to alter anything if console */
 374         if ((id <= num) && (!pdev->dev.platform_data)) {
 375                 pinfo = &mpc885_uart_pdata[id];
 376                 pinfo->uart_clk = bd->bi_intfreq;
 377                 pdev->dev.platform_data = pinfo;
 378         }
 379 }
 380
 381
 382 static int mpc885ads_platform_notify(struct device *dev)
 383 {
 384
 385         static const struct platform_notify_dev_map dev_map[] = {
 386                 {
 387                         .bus_id = "fsl-cpm-fec",
 388                         .rtn = mpc885ads_fixup_fec_enet_pdata,
 389                 },
 390                 {
 391                         .bus_id = "fsl-cpm-scc",
 392                         .rtn = mpc885ads_fixup_scc_enet_pdata,
 393                 },
 394                 {
 395                         .bus_id = "fsl-cpm-smc:uart",
 396                         .rtn = mpc885ads_fixup_uart_pdata
 397                 },
 398                 {
 399                         .bus_id = NULL
 400                 }
 401         };
 402
 403         platform_notify_map(dev_map,dev);
 404
 405         return 0;
 406 }
 407
 408 int __init mpc885ads_init(void)
 409 {
 410         struct fs_mii_fec_platform_info* fmpi;
 411         bd_t *bd = (bd_t *) __res;
 412
 413         printk(KERN_NOTICE "mpc885ads: Init\n");
 414
 415         platform_notify = mpc885ads_platform_notify;
 416
 417         ppc_sys_device_initfunc();
 418         ppc_sys_device_disable_all();
 419
 420         ppc_sys_device_enable(MPC8xx_CPM_FEC1);
 421
 422         ppc_sys_device_enable(MPC8xx_MDIO_FEC);
 423         fmpi = ppc_sys_platform_devices[MPC8xx_MDIO_FEC].dev.platform_data =
 424                 &mpc8xx_mdio_fec_pdata;
 425
 426         fmpi->mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2) & 0x3F) << 1;
 427
 428         /* No PHY interrupt line here */
 429         fmpi->irq[0xf] = SIU_IRQ7;
 430
 431 #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3
 432         ppc_sys_device_enable(MPC8xx_CPM_SCC3);
 433
 434 #endif
 435 #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2
 436         ppc_sys_device_enable(MPC8xx_CPM_FEC2);
 437 #endif
 438
 439 #ifdef CONFIG_SERIAL_CPM_SMC1
 440         ppc_sys_device_enable(MPC8xx_CPM_SMC1);
 441         ppc_sys_device_setfunc(MPC8xx_CPM_SMC1, PPC_SYS_FUNC_UART);
 442 #endif
 443
 444 #ifdef CONFIG_SERIAL_CPM_SMC2
 445         ppc_sys_device_enable(MPC8xx_CPM_SMC2);
 446         ppc_sys_device_setfunc(MPC8xx_CPM_SMC2, PPC_SYS_FUNC_UART);
 447 #endif
 448         return 0;
 449 }
 450
 451 arch_initcall(mpc885ads_init);
 452
 453 /*
 454    To prevent confusion, console selection is gross:
 455    by 0 assumed SMC1 and by 1 assumed SMC2
 456  */
 457 struct platform_device* early_uart_get_pdev(int index)
 458 {
 459         bd_t *bd = (bd_t *) __res;
 460         struct fs_uart_platform_info *pinfo;
 461
 462         struct platform_device* pdev = NULL;
 463         if(index) { /*assume SMC2 here*/
 464                 pdev = &ppc_sys_platform_devices[MPC8xx_CPM_SMC2];
 465                 pinfo = &mpc885_uart_pdata[1];
 466         } else { /*over SMC1*/
 467                 pdev = &ppc_sys_platform_devices[MPC8xx_CPM_SMC1];
 468                 pinfo = &mpc885_uart_pdata[0];
 469         }
 470
 471         pinfo->uart_clk = bd->bi_intfreq;
 472         pdev->dev.platform_data = pinfo;
 473         ppc_sys_fixup_mem_resource(pdev, IMAP_ADDR);
 474         return NULL;
 475 }
 476