arch/ppc/platforms/mpc866ads_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/config.h>
  15 #include <linux/init.h>
  16 #include <linux/module.h>
  17 #include <linux/param.h>
  18 #include <linux/string.h>
  19 #include <linux/ioport.h>
  20 #include <linux/device.h>
  21
  22 #include <linux/fs_enet_pd.h>
  23 #include <linux/fs_uart_pd.h>
  24 #include <linux/mii.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(void);
  42 static void setup_scc1_ioports(void);
  43 static void setup_smc1_ioports(void);
  44 static void setup_smc2_ioports(void);
  45
  46 static struct fs_mii_bus_info fec_mii_bus_info = {
  47         .method = fsmii_fec,
  48         .id = 0,
  49 };
  50
  51 static struct fs_mii_bus_info scc_mii_bus_info = {
  52         .method = fsmii_fixed,
  53         .id = 0,
  54         .i.fixed.speed = 10,
  55         .i.fixed.duplex = 0,
  56 };
  57
  58 static struct fs_platform_info mpc8xx_fec_pdata[] = {
  59         {
  60          .rx_ring = 128,
  61          .tx_ring = 16,
  62          .rx_copybreak = 240,
  63
  64          .use_napi = 1,
  65          .napi_weight = 17,
  66
  67          .phy_addr = 15,
  68          .phy_irq = -1,
  69
  70          .use_rmii = 0,
  71
  72          .bus_info = &fec_mii_bus_info,
  73          }
  74 };
  75
  76 static struct fs_platform_info mpc8xx_scc_pdata = {
  77         .rx_ring = 64,
  78         .tx_ring = 8,
  79         .rx_copybreak = 240,
  80
  81         .use_napi = 1,
  82         .napi_weight = 17,
  83
  84         .phy_addr = -1,
  85         .phy_irq = -1,
  86
  87         .bus_info = &scc_mii_bus_info,
  88
  89 };
  90
  91 static struct fs_uart_platform_info mpc866_uart_pdata[] = {
  92         [fsid_smc1_uart] = {
  93                 .brg            = 1,
  94                 .fs_no          = fsid_smc1_uart,
  95                 .init_ioports   = setup_smc1_ioports,
  96                 .tx_num_fifo    = 4,
  97                 .tx_buf_size    = 32,
  98                 .rx_num_fifo    = 4,
  99                 .rx_buf_size    = 32,
 100         },
 101         [fsid_smc2_uart] = {
 102                 .brg            = 2,
 103                 .fs_no          = fsid_smc2_uart,
 104                 .init_ioports   = setup_smc2_ioports,
 105                 .tx_num_fifo    = 4,
 106                 .tx_buf_size    = 32,
 107                 .rx_num_fifo    = 4,
 108                 .rx_buf_size    = 32,
 109         },
 110 };
 111
 112 void __init board_init(void)
 113 {
 114         volatile cpm8xx_t *cp = cpmp;
 115         unsigned *bcsr_io;
 116
 117         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 118
 119         if (bcsr_io == NULL) {
 120                 printk(KERN_CRIT "Could not remap BCSR1\n");
 121                 return;
 122         }
 123
 124 #ifdef CONFIG_SERIAL_CPM_SMC1
 125         cp->cp_simode &= ~(0xe0000000 >> 17);   /* brg1 */
 126         clrbits32(bcsr_io,(0x80000000 >> 7));
 127         cp->cp_smc[0].smc_smcm |= (SMCM_RX | SMCM_TX);
 128         cp->cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 129 #else
 130         setbits32(bcsr_io,(0x80000000 >> 7));
 131
 132         cp->cp_pbpar &= ~(0x000000c0);
 133         cp->cp_pbdir |= 0x000000c0;
 134         cp->cp_smc[0].smc_smcmr = 0;
 135         cp->cp_smc[0].smc_smce = 0;
 136 #endif
 137
 138 #ifdef CONFIG_SERIAL_CPM_SMC2
 139         cp->cp_simode &= ~(0xe0000000 >> 1);
 140         cp->cp_simode |= (0x20000000 >> 1);     /* brg2 */
 141         clrbits32(bcsr_io,(0x80000000 >> 13));
 142         cp->cp_smc[1].smc_smcm |= (SMCM_RX | SMCM_TX);
 143         cp->cp_smc[1].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN);
 144 #else
 145         clrbits32(bcsr_io,(0x80000000 >> 13));
 146         cp->cp_pbpar &= ~(0x00000c00);
 147         cp->cp_pbdir |= 0x00000c00;
 148         cp->cp_smc[1].smc_smcmr = 0;
 149         cp->cp_smc[1].smc_smce = 0;
 150 #endif
 151         iounmap(bcsr_io);
 152 }
 153
 154 static void setup_fec1_ioports(void)
 155 {
 156         immap_t *immap = (immap_t *) IMAP_ADDR;
 157
 158         setbits16(&immap->im_ioport.iop_pdpar, 0x1fff);
 159         setbits16(&immap->im_ioport.iop_pddir, 0x1fff);
 160 }
 161
 162 static void setup_scc1_ioports(void)
 163 {
 164         immap_t *immap = (immap_t *) IMAP_ADDR;
 165         unsigned *bcsr_io;
 166
 167         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 168
 169         if (bcsr_io == NULL) {
 170                 printk(KERN_CRIT "Could not remap BCSR1\n");
 171                 return;
 172         }
 173
 174         /* Enable the PHY.
 175          */
 176         clrbits32(bcsr_io,BCSR1_ETHEN);
 177
 178         /* Configure port A pins for Txd and Rxd.
 179          */
 180         /* Disable receive and transmit in case EPPC-Bug started it.
 181          */
 182         setbits16(&immap->im_ioport.iop_papar, PA_ENET_RXD | PA_ENET_TXD);
 183         clrbits16(&immap->im_ioport.iop_padir, PA_ENET_RXD | PA_ENET_TXD);
 184         clrbits16(&immap->im_ioport.iop_paodr, PA_ENET_TXD);
 185
 186         /* Configure port C pins to enable CLSN and RENA.
 187          */
 188         clrbits16(&immap->im_ioport.iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA);
 189         clrbits16(&immap->im_ioport.iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA);
 190         setbits16(&immap->im_ioport.iop_pcso, PC_ENET_CLSN | PC_ENET_RENA);
 191         /* Configure port A for TCLK and RCLK.
 192          */
 193         setbits16(&immap->im_ioport.iop_papar, PA_ENET_TCLK | PA_ENET_RCLK);
 194         clrbits16(&immap->im_ioport.iop_padir, PA_ENET_TCLK | PA_ENET_RCLK);
 195         clrbits32(&immap->im_cpm.cp_pbpar, PB_ENET_TENA);
 196         clrbits32(&immap->im_cpm.cp_pbdir, PB_ENET_TENA);
 197
 198         /* Configure Serial Interface clock routing.
 199          * First, clear all SCC bits to zero, then set the ones we want.
 200          */
 201         clrbits32(&immap->im_cpm.cp_sicr, SICR_ENET_MASK);
 202         setbits32(&immap->im_cpm.cp_sicr, SICR_ENET_CLKRT);
 203
 204         /* In the original SCC enet driver the following code is placed at
 205         the end of the initialization */
 206         setbits32(&immap->im_cpm.cp_pbpar, PB_ENET_TENA);
 207         setbits32(&immap->im_cpm.cp_pbdir, PB_ENET_TENA);
 208
 209 }
 210
 211 static void mpc866ads_fixup_enet_pdata(struct platform_device *pdev, int fs_no)
 212 {
 213         struct fs_platform_info *fpi = pdev->dev.platform_data;
 214
 215         volatile cpm8xx_t *cp;
 216         bd_t *bd = (bd_t *) __res;
 217         char *e;
 218         int i;
 219
 220         /* Get pointer to Communication Processor */
 221         cp = cpmp;
 222         switch (fs_no) {
 223         case fsid_fec1:
 224                 fpi = &mpc8xx_fec_pdata[0];
 225                 fpi->init_ioports = &setup_fec1_ioports;
 226
 227                 break;
 228         case fsid_scc1:
 229                 fpi = &mpc8xx_scc_pdata;
 230                 fpi->init_ioports = &setup_scc1_ioports;
 231
 232                 break;
 233         default:
 234                 printk(KERN_WARNING"Device %s is not supported!\n", pdev->name);
 235                 return;
 236         }
 237
 238         pdev->dev.platform_data = fpi;
 239         fpi->fs_no = fs_no;
 240
 241         e = (unsigned char *)&bd->bi_enetaddr;
 242         for (i = 0; i < 6; i++)
 243                 fpi->macaddr[i] = *e++;
 244
 245         fpi->macaddr[5 - pdev->id]++;
 246
 247 }
 248
 249 static void mpc866ads_fixup_fec_enet_pdata(struct platform_device *pdev,
 250                                            int idx)
 251 {
 252         /* This is for FEC devices only */
 253         if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-fec")))
 254                 return;
 255         mpc866ads_fixup_enet_pdata(pdev, fsid_fec1 + pdev->id - 1);
 256 }
 257
 258 static void mpc866ads_fixup_scc_enet_pdata(struct platform_device *pdev,
 259                                            int idx)
 260 {
 261         /* This is for SCC devices only */
 262         if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-scc")))
 263                 return;
 264
 265         mpc866ads_fixup_enet_pdata(pdev, fsid_scc1 + pdev->id - 1);
 266 }
 267
 268 static void setup_smc1_ioports(void)
 269 {
 270         immap_t *immap = (immap_t *) IMAP_ADDR;
 271         unsigned *bcsr_io;
 272         unsigned int iobits = 0x000000c0;
 273
 274         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 275
 276         if (bcsr_io == NULL) {
 277                 printk(KERN_CRIT "Could not remap BCSR1\n");
 278                 return;
 279         }
 280
 281         clrbits32(bcsr_io,BCSR1_RS232EN_1);
 282         iounmap(bcsr_io);
 283
 284         setbits32(&immap->im_cpm.cp_pbpar, iobits);
 285         clrbits32(&immap->im_cpm.cp_pbdir, iobits);
 286         clrbits16(&immap->im_cpm.cp_pbodr, iobits);
 287
 288 }
 289
 290 static void setup_smc2_ioports(void)
 291 {
 292         immap_t *immap = (immap_t *) IMAP_ADDR;
 293         unsigned *bcsr_io;
 294         unsigned int iobits = 0x00000c00;
 295
 296         bcsr_io = ioremap(BCSR1, sizeof(unsigned long));
 297
 298         if (bcsr_io == NULL) {
 299                 printk(KERN_CRIT "Could not remap BCSR1\n");
 300                 return;
 301         }
 302
 303         clrbits32(bcsr_io,BCSR1_RS232EN_2);
 304
 305         iounmap(bcsr_io);
 306
 307 #ifndef CONFIG_SERIAL_CPM_ALT_SMC2
 308         setbits32(&immap->im_cpm.cp_pbpar, iobits);
 309         clrbits32(&immap->im_cpm.cp_pbdir, iobits);
 310         clrbits16(&immap->im_cpm.cp_pbodr, iobits);
 311 #else
 312         setbits16(&immap->im_ioport.iop_papar, iobits);
 313         clrbits16(&immap->im_ioport.iop_padir, iobits);
 314         clrbits16(&immap->im_ioport.iop_paodr, iobits);
 315 #endif
 316
 317 }
 318
 319 static void __init mpc866ads_fixup_uart_pdata(struct platform_device *pdev,
 320                                               int idx)
 321 {
 322         bd_t *bd = (bd_t *) __res;
 323         struct fs_uart_platform_info *pinfo;
 324         int num = ARRAY_SIZE(mpc866_uart_pdata);
 325
 326         int id = fs_uart_id_smc2fsid(idx);
 327
 328         /* no need to alter anything if console */
 329         if ((id <= num) && (!pdev->dev.platform_data)) {
 330                 pinfo = &mpc866_uart_pdata[id];
 331                 pinfo->uart_clk = bd->bi_intfreq;
 332                 pdev->dev.platform_data = pinfo;
 333         }
 334 }
 335
 336 static int mpc866ads_platform_notify(struct device *dev)
 337 {
 338         static const struct platform_notify_dev_map dev_map[] = {
 339                 {
 340                         .bus_id = "fsl-cpm-fec",
 341                         .rtn = mpc866ads_fixup_fec_enet_pdata,
 342                 },
 343                 {
 344                         .bus_id = "fsl-cpm-scc",
 345                         .rtn = mpc866ads_fixup_scc_enet_pdata,
 346                 },
 347                 {
 348                         .bus_id = "fsl-cpm-smc:uart",
 349                         .rtn = mpc866ads_fixup_uart_pdata
 350                 },
 351                 {
 352                         .bus_id = NULL
 353                 }
 354         };
 355
 356         platform_notify_map(dev_map,dev);
 357
 358         return 0;
 359 }
 360
 361 int __init mpc866ads_init(void)
 362 {
 363         printk(KERN_NOTICE "mpc866ads: Init\n");
 364
 365         platform_notify = mpc866ads_platform_notify;
 366
 367         ppc_sys_device_initfunc();
 368         ppc_sys_device_disable_all();
 369
 370 #ifdef MPC8xx_SECOND_ETH_SCC1
 371         ppc_sys_device_enable(MPC8xx_CPM_SCC1);
 372 #endif
 373         ppc_sys_device_enable(MPC8xx_CPM_FEC1);
 374
 375 /* Since either of the uarts could be used as console, they need to ready */
 376 #ifdef CONFIG_SERIAL_CPM_SMC1
 377         ppc_sys_device_enable(MPC8xx_CPM_SMC1);
 378         ppc_sys_device_setfunc(MPC8xx_CPM_SMC1, PPC_SYS_FUNC_UART);
 379 #endif
 380
 381 #ifdef CONFIG_SERIAL_CPM_SMC
 382         ppc_sys_device_enable(MPC8xx_CPM_SMC2);
 383         ppc_sys_device_setfunc(MPC8xx_CPM_SMC2, PPC_SYS_FUNC_UART);
 384 #endif
 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);