arch/ppc/platforms/mpc866ads_setup.c

   1 /*arch/ppc/platforms/mpc866ads_setup.c
   2  *
   3  * Platform setup for the Freescale mpc866ads board
   4  *
   5  * Vitaly Bordug <vbordug@ru.mvista.com>
   6  *
   7  * Copyright 2005-2006 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 #include <linux/phy.h>
  25
  26 #include <asm/delay.h>
  27 #include <asm/io.h>
  28 #include <asm/machdep.h>
  29 #include <asm/page.h>
  30 #include <asm/processor.h>
  31 #include <asm/system.h>
  32 #include <asm/time.h>
  33 #include <asm/ppcboot.h>
  34 #include <asm/8xx_immap.h>
  35 #include <asm/commproc.h>
  36 #include <asm/ppc_sys.h>
  37 #include <asm/mpc8xx.h>
  38
  39 extern unsigned char __res[];
  40
  41 static void setup_fec1_ioports(struct fs_platform_info*);
  42 static void setup_scc1_ioports(struct fs_platform_info*);
  43 static void setup_smc1_ioports(struct fs_uart_platform_info*);
  44 static void setup_smc2_ioports(struct fs_uart_platform_info*);
  45
  46 static struct fs_mii_fec_platform_info  mpc8xx_mdio_fec_pdata;
  47
  48 static struct fs_mii_fec_platform_info mpc8xx_mdio_fec_pdata;
  49
  50 static struct fs_platform_info mpc8xx_enet_pdata[] = {
  51         [fsid_fec1] = {
  52                 .rx_ring = 128,
  53                 .tx_ring = 16,
  54                 .rx_copybreak = 240,
  55
  56                 .use_napi = 1,
  57                 .napi_weight = 17,
  58
  59                 .init_ioports = setup_fec1_ioports,
  60
  61                 .bus_id = "0:0f",
  62                 .has_phy = 1,
  63         },
  64         [fsid_scc1] = {
  65                 .rx_ring = 64,
  66                 .tx_ring = 8,
  67                 .rx_copybreak = 240,
  68                 .use_napi = 1,
  69                 .napi_weight = 17,
  70
  71
  72                 .init_ioports = setup_scc1_ioports,
  73
  74                 .bus_id = "fixed@100:1",
  75         },
  76 };
  77
  78 static struct fs_uart_platform_info mpc866_uart_pdata[] = {
  79         [fsid_smc1_uart] = {
  80                 .brg            = 1,
  81                 .fs_no          = fsid_smc1_uart,
  82                 .init_ioports   = setup_smc1_ioports,
  83                 .tx_num_fifo    = 4,
  84                 .tx_buf_size    = 32,
  85                 .rx_num_fifo    = 4,
  86                 .rx_buf_size    = 32,
  87         },
  88         [fsid_smc2_uart] = {
  89                 .brg            = 2,
  90                 .fs_no          = fsid_smc2_uart,
  91                 .init_ioports   = setup_smc2_ioports,
  92                 .tx_num_fifo    = 4,
  93                 .tx_buf_size    = 32,
  94                 .rx_num_fifo    = 4,
  95                 .rx_buf_size    = 32,
  96         },
  97 };
  98
  99 void __init board_init(void)
 100 {
 101         volatile cpm8xx_t *cp = cpmp;
 102         unsigned *bcsr_io;
 103
 104         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 105
 106         if (bcsr_io == NULL) {
 107                 printk(KERN_CRIT "Could not remap BCSR1\n");
 108                 return;
 109         }
 110
 111 #ifdef CONFIG_SERIAL_CPM_SMC1
 112         cp->cp_simode &= ~(0xe0000000 >> 17);   /* brg1 */
 113         clrbits32(bcsr_io,(0x80000000 >> 7));
 114         cp->cp_smc[0].smc_smcm |= (SMCM_RX | SMCM_TX);
 115         cp->cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 116 #else
 117         setbits32(bcsr_io,(0x80000000 >> 7));
 118
 119         cp->cp_pbpar &= ~(0x000000c0);
 120         cp->cp_pbdir |= 0x000000c0;
 121         cp->cp_smc[0].smc_smcmr = 0;
 122         cp->cp_smc[0].smc_smce = 0;
 123 #endif
 124
 125 #ifdef CONFIG_SERIAL_CPM_SMC2
 126         cp->cp_simode &= ~(0xe0000000 >> 1);
 127         cp->cp_simode |= (0x20000000 >> 1);     /* brg2 */
 128         clrbits32(bcsr_io,(0x80000000 >> 13));
 129         cp->cp_smc[1].smc_smcm |= (SMCM_RX | SMCM_TX);
 130         cp->cp_smc[1].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 131 #else
 132         clrbits32(bcsr_io,(0x80000000 >> 13));
 133         cp->cp_pbpar &= ~(0x00000c00);
 134         cp->cp_pbdir |= 0x00000c00;
 135         cp->cp_smc[1].smc_smcmr = 0;
 136         cp->cp_smc[1].smc_smce = 0;
 137 #endif
 138         iounmap(bcsr_io);
 139 }
 140
 141 static void setup_fec1_ioports(struct fs_platform_info* pdata)
 142 {
 143         immap_t *immap = (immap_t *) IMAP_ADDR;
 144
 145         setbits16(&immap->im_ioport.iop_pdpar, 0x1fff);
 146         setbits16(&immap->im_ioport.iop_pddir, 0x1fff);
 147 }
 148
 149 static void setup_scc1_ioports(struct fs_platform_info* pdata)
 150 {
 151         immap_t *immap = (immap_t *) IMAP_ADDR;
 152         unsigned *bcsr_io;
 153
 154         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 155
 156         if (bcsr_io == NULL) {
 157                 printk(KERN_CRIT "Could not remap BCSR1\n");
 158                 return;
 159         }
 160
 161         /* Enable the PHY.
 162          */
 163         clrbits32(bcsr_io,BCSR1_ETHEN);
 164
 165         /* Configure port A pins for Txd and Rxd.
 166          */
 167         /* Disable receive and transmit in case EPPC-Bug started it.
 168          */
 169         setbits16(&immap->im_ioport.iop_papar, PA_ENET_RXD | PA_ENET_TXD);
 170         clrbits16(&immap->im_ioport.iop_padir, PA_ENET_RXD | PA_ENET_TXD);
 171         clrbits16(&immap->im_ioport.iop_paodr, PA_ENET_TXD);
 172
 173         /* Configure port C pins to enable CLSN and RENA.
 174          */
 175         clrbits16(&immap->im_ioport.iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA);
 176         clrbits16(&immap->im_ioport.iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA);
 177         setbits16(&immap->im_ioport.iop_pcso, PC_ENET_CLSN | PC_ENET_RENA);
 178         /* Configure port A for TCLK and RCLK.
 179          */
 180         setbits16(&immap->im_ioport.iop_papar, PA_ENET_TCLK | PA_ENET_RCLK);
 181         clrbits16(&immap->im_ioport.iop_padir, PA_ENET_TCLK | PA_ENET_RCLK);
 182         clrbits32(&immap->im_cpm.cp_pbpar, PB_ENET_TENA);
 183         clrbits32(&immap->im_cpm.cp_pbdir, PB_ENET_TENA);
 184
 185         /* Configure Serial Interface clock routing.
 186          * First, clear all SCC bits to zero, then set the ones we want.
 187          */
 188         clrbits32(&immap->im_cpm.cp_sicr, SICR_ENET_MASK);
 189         setbits32(&immap->im_cpm.cp_sicr, SICR_ENET_CLKRT);
 190
 191         /* In the original SCC enet driver the following code is placed at
 192         the end of the initialization */
 193         setbits32(&immap->im_cpm.cp_pbpar, PB_ENET_TENA);
 194         setbits32(&immap->im_cpm.cp_pbdir, PB_ENET_TENA);
 195
 196 }
 197
 198 static void setup_smc1_ioports(struct fs_uart_platform_info* pdata)
 199 {
 200         immap_t *immap = (immap_t *) IMAP_ADDR;
 201         unsigned *bcsr_io;
 202         unsigned int iobits = 0x000000c0;
 203
 204         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 205
 206         if (bcsr_io == NULL) {
 207                 printk(KERN_CRIT "Could not remap BCSR1\n");
 208                 return;
 209         }
 210
 211         clrbits32(bcsr_io,BCSR1_RS232EN_1);
 212         iounmap(bcsr_io);
 213
 214         setbits32(&immap->im_cpm.cp_pbpar, iobits);
 215         clrbits32(&immap->im_cpm.cp_pbdir, iobits);
 216         clrbits16(&immap->im_cpm.cp_pbodr, iobits);
 217
 218 }
 219
 220 static void setup_smc2_ioports(struct fs_uart_platform_info* pdata)
 221 {
 222         immap_t *immap = (immap_t *) IMAP_ADDR;
 223         unsigned *bcsr_io;
 224         unsigned int iobits = 0x00000c00;
 225
 226         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 227
 228         if (bcsr_io == NULL) {
 229                 printk(KERN_CRIT "Could not remap BCSR1\n");
 230                 return;
 231         }
 232
 233         clrbits32(bcsr_io,BCSR1_RS232EN_2);
 234
 235         iounmap(bcsr_io);
 236
 237 #ifndef CONFIG_SERIAL_CPM_ALT_SMC2
 238         setbits32(&immap->im_cpm.cp_pbpar, iobits);
 239         clrbits32(&immap->im_cpm.cp_pbdir, iobits);
 240         clrbits16(&immap->im_cpm.cp_pbodr, iobits);
 241 #else
 242         setbits16(&immap->im_ioport.iop_papar, iobits);
 243         clrbits16(&immap->im_ioport.iop_padir, iobits);
 244         clrbits16(&immap->im_ioport.iop_paodr, iobits);
 245 #endif
 246
 247 }
 248
 249 static int ma_count = 0;
 250
 251 static void mpc866ads_fixup_enet_pdata(struct platform_device *pdev, int fs_no)
 252 {
 253         struct fs_platform_info *fpi;
 254
 255         volatile cpm8xx_t *cp;
 256         bd_t *bd = (bd_t *) __res;
 257         char *e;
 258         int i;
 259
 260         /* Get pointer to Communication Processor */
 261         cp = cpmp;
 262
 263         if(fs_no >= ARRAY_SIZE(mpc8xx_enet_pdata)) {
 264                 printk(KERN_ERR"No network-suitable #%d device on bus", fs_no);
 265                 return;
 266         }
 267
 268
 269         fpi = &mpc8xx_enet_pdata[fs_no];
 270         fpi->fs_no = fs_no;
 271         pdev->dev.platform_data = fpi;
 272
 273         e = (unsigned char *)&bd->bi_enetaddr;
 274         for (i = 0; i < 6; i++)
 275                 fpi->macaddr[i] = *e++;
 276
 277         fpi->macaddr[5] += ma_count++;
 278 }
 279
 280 static void mpc866ads_fixup_fec_enet_pdata(struct platform_device *pdev,
 281                                            int idx)
 282 {
 283         /* This is for FEC devices only */
 284         if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-fec")))
 285                 return;
 286         mpc866ads_fixup_enet_pdata(pdev, fsid_fec1 + pdev->id - 1);
 287 }
 288
 289 static void mpc866ads_fixup_scc_enet_pdata(struct platform_device *pdev,
 290                                            int idx)
 291 {
 292         /* This is for SCC devices only */
 293         if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-scc")))
 294                 return;
 295
 296         mpc866ads_fixup_enet_pdata(pdev, fsid_scc1 + pdev->id - 1);
 297 }
 298
 299 static void __init mpc866ads_fixup_uart_pdata(struct platform_device *pdev,
 300                                               int idx)
 301 {
 302         bd_t *bd = (bd_t *) __res;
 303         struct fs_uart_platform_info *pinfo;
 304         int num = ARRAY_SIZE(mpc866_uart_pdata);
 305
 306         int id = fs_uart_id_smc2fsid(idx);
 307
 308         /* no need to alter anything if console */
 309         if ((id < num) && (!pdev->dev.platform_data)) {
 310                 pinfo = &mpc866_uart_pdata[id];
 311                 pinfo->uart_clk = bd->bi_intfreq;
 312                 pdev->dev.platform_data = pinfo;
 313         }
 314 }
 315
 316 static int mpc866ads_platform_notify(struct device *dev)
 317 {
 318         static const struct platform_notify_dev_map dev_map[] = {
 319                 {
 320                         .bus_id = "fsl-cpm-fec",
 321                         .rtn = mpc866ads_fixup_fec_enet_pdata,
 322                 },
 323                 {
 324                         .bus_id = "fsl-cpm-scc",
 325                         .rtn = mpc866ads_fixup_scc_enet_pdata,
 326                 },
 327                 {
 328                         .bus_id = "fsl-cpm-smc:uart",
 329                         .rtn = mpc866ads_fixup_uart_pdata
 330                 },
 331                 {
 332                         .bus_id = NULL
 333                 }
 334         };
 335
 336         platform_notify_map(dev_map,dev);
 337
 338         return 0;
 339 }
 340
 341 int __init mpc866ads_init(void)
 342 {
 343         bd_t *bd = (bd_t *) __res;
 344         struct fs_mii_fec_platform_info* fmpi;
 345
 346         printk(KERN_NOTICE "mpc866ads: Init\n");
 347
 348         platform_notify = mpc866ads_platform_notify;
 349
 350         ppc_sys_device_initfunc();
 351         ppc_sys_device_disable_all();
 352
 353 #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC1
 354         ppc_sys_device_enable(MPC8xx_CPM_SCC1);
 355 #endif
 356         ppc_sys_device_enable(MPC8xx_CPM_FEC1);
 357
 358         ppc_sys_device_enable(MPC8xx_MDIO_FEC);
 359
 360         fmpi = ppc_sys_platform_devices[MPC8xx_MDIO_FEC].dev.platform_data =
 361                 &mpc8xx_mdio_fec_pdata;
 362
 363         fmpi->mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2) & 0x3F) << 1;
 364         /* No PHY interrupt line here */
 365         fmpi->irq[0xf] = PHY_POLL;
 366
 367 /* Since either of the uarts could be used as console, they need to ready */
 368 #ifdef CONFIG_SERIAL_CPM_SMC1
 369         ppc_sys_device_enable(MPC8xx_CPM_SMC1);
 370         ppc_sys_device_setfunc(MPC8xx_CPM_SMC1, PPC_SYS_FUNC_UART);
 371 #endif
 372
 373 #ifdef CONFIG_SERIAL_CPM_SMC2
 374         ppc_sys_device_enable(MPC8xx_CPM_SMC2);
 375         ppc_sys_device_setfunc(MPC8xx_CPM_SMC2, PPC_SYS_FUNC_UART);
 376 #endif
 377         ppc_sys_device_enable(MPC8xx_MDIO_FEC);
 378
 379         fmpi = ppc_sys_platform_devices[MPC8xx_MDIO_FEC].dev.platform_data =
 380                 &mpc8xx_mdio_fec_pdata;
 381
 382         fmpi->mii_speed = ((((bd->bi_intfreq + 4999999) / 2500000) / 2) & 0x3F) << 1;
 383         /* No PHY interrupt line here */
 384         fmpi->irq[0xf] = PHY_POLL;
 385
 386         return 0;
 387 }
 388
 389 /*
 390    To prevent confusion, console selection is gross:
 391    by 0 assumed SMC1 and by 1 assumed SMC2
 392  */
 393 struct platform_device* early_uart_get_pdev(int index)
 394 {
 395         bd_t *bd = (bd_t *) __res;
 396         struct fs_uart_platform_info *pinfo;
 397
 398         struct platform_device* pdev = NULL;
 399         if(index) { /*assume SMC2 here*/
 400                 pdev = &ppc_sys_platform_devices[MPC8xx_CPM_SMC2];
 401                 pinfo = &mpc866_uart_pdata[1];
 402         } else { /*over SMC1*/
 403                 pdev = &ppc_sys_platform_devices[MPC8xx_CPM_SMC1];
 404                 pinfo = &mpc866_uart_pdata[0];
 405         }
 406
 407         pinfo->uart_clk = bd->bi_intfreq;
 408         pdev->dev.platform_data = pinfo;
 409         ppc_sys_fixup_mem_resource(pdev, IMAP_ADDR);
 410         return NULL;
 411 }
 412
 413 arch_initcall(mpc866ads_init);