| /*arch/ppc/platforms/mpc885ads-setup.c |
| * |
| * Platform setup for the Freescale mpc885ads board |
| * |
| * Vitaly Bordug <vbordug@ru.mvista.com> |
| * |
| * Copyright 2005 MontaVista Software Inc. |
| * |
| * This file is licensed under the terms of the GNU General Public License |
| * version 2. This program is licensed "as is" without any warranty of any |
| * kind, whether express or implied. |
| */ |
| |
| #include <linux/config.h> |
| #include <linux/init.h> |
| #include <linux/module.h> |
| #include <linux/param.h> |
| #include <linux/string.h> |
| #include <linux/ioport.h> |
| #include <linux/device.h> |
| |
| #include <linux/fs_enet_pd.h> |
| #include <linux/mii.h> |
| |
| #include <asm/delay.h> |
| #include <asm/io.h> |
| #include <asm/machdep.h> |
| #include <asm/page.h> |
| #include <asm/processor.h> |
| #include <asm/system.h> |
| #include <asm/time.h> |
| #include <asm/ppcboot.h> |
| #include <asm/8xx_immap.h> |
| #include <asm/commproc.h> |
| #include <asm/ppc_sys.h> |
| |
| extern unsigned char __res[]; |
| |
| static void __init mpc885ads_scc_phy_init(char); |
| |
| static struct fs_mii_bus_info fec_mii_bus_info = { |
| .method = fsmii_fec, |
| .id = 0, |
| }; |
| |
| static struct fs_mii_bus_info scc_mii_bus_info = { |
| #ifdef CONFIG_SCC_ENET_8xx_FIXED |
| .method = fsmii_fixed, |
| #else |
| .method = fsmii_fec, |
| #endif |
| |
| .id = 0, |
| }; |
| |
| static struct fs_platform_info mpc8xx_fec_pdata[] = { |
| { |
| .rx_ring = 128, |
| .tx_ring = 16, |
| .rx_copybreak = 240, |
| |
| .use_napi = 1, |
| .napi_weight = 17, |
| |
| .phy_addr = 0, |
| .phy_irq = SIU_IRQ7, |
| |
| .bus_info = &fec_mii_bus_info, |
| }, { |
| .rx_ring = 128, |
| .tx_ring = 16, |
| .rx_copybreak = 240, |
| |
| .use_napi = 1, |
| .napi_weight = 17, |
| |
| .phy_addr = 1, |
| .phy_irq = SIU_IRQ7, |
| |
| .bus_info = &fec_mii_bus_info, |
| } |
| }; |
| |
| static struct fs_platform_info mpc8xx_scc_pdata = { |
| .rx_ring = 64, |
| .tx_ring = 8, |
| .rx_copybreak = 240, |
| |
| .use_napi = 1, |
| .napi_weight = 17, |
| |
| .phy_addr = 2, |
| #ifdef CONFIG_MPC8xx_SCC_ENET_FIXED |
| .phy_irq = -1, |
| #else |
| .phy_irq = SIU_IRQ7, |
| #endif |
| |
| .bus_info = &scc_mii_bus_info, |
| }; |
| |
| void __init board_init(void) |
| { |
| volatile cpm8xx_t *cp = cpmp; |
| unsigned int *bcsr_io; |
| |
| #ifdef CONFIG_FS_ENET |
| immap_t *immap = (immap_t *) IMAP_ADDR; |
| #endif |
| bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); |
| |
| if (bcsr_io == NULL) { |
| printk(KERN_CRIT "Could not remap BCSR\n"); |
| return; |
| } |
| #ifdef CONFIG_SERIAL_CPM_SMC1 |
| cp->cp_simode &= ~(0xe0000000 >> 17); /* brg1 */ |
| clrbits32(bcsr_io, BCSR1_RS232EN_1); |
| #else |
| setbits32(bcsr_io,BCSR1_RS232EN_1); |
| cp->cp_smc[0].smc_smcmr = 0; |
| cp->cp_smc[0].smc_smce = 0; |
| #endif |
| |
| #ifdef CONFIG_SERIAL_CPM_SMC2 |
| cp->cp_simode &= ~(0xe0000000 >> 1); |
| cp->cp_simode |= (0x20000000 >> 1); /* brg2 */ |
| clrbits32(bcsr_io,BCSR1_RS232EN_2); |
| #else |
| setbits32(bcsr_io,BCSR1_RS232EN_2); |
| cp->cp_smc[1].smc_smcmr = 0; |
| cp->cp_smc[1].smc_smce = 0; |
| #endif |
| iounmap(bcsr_io); |
| |
| #ifdef CONFIG_FS_ENET |
| /* use MDC for MII (common) */ |
| setbits16(&immap->im_ioport.iop_pdpar, 0x0080); |
| clrbits16(&immap->im_ioport.iop_pddir, 0x0080); |
| #endif |
| } |
| |
| static void setup_fec1_ioports(void) |
| { |
| immap_t *immap = (immap_t *) IMAP_ADDR; |
| |
| /* configure FEC1 pins */ |
| setbits16(&immap->im_ioport.iop_papar, 0xf830); |
| setbits16(&immap->im_ioport.iop_padir, 0x0830); |
| clrbits16(&immap->im_ioport.iop_padir, 0xf000); |
| setbits32(&immap->im_cpm.cp_pbpar, 0x00001001); |
| |
| clrbits32(&immap->im_cpm.cp_pbdir, 0x00001001); |
| setbits16(&immap->im_ioport.iop_pcpar, 0x000c); |
| clrbits16(&immap->im_ioport.iop_pcdir, 0x000c); |
| setbits32(&immap->im_cpm.cp_pepar, 0x00000003); |
| |
| setbits32(&immap->im_cpm.cp_pedir, 0x00000003); |
| clrbits32(&immap->im_cpm.cp_peso, 0x00000003); |
| clrbits32(&immap->im_cpm.cp_cptr, 0x00000100); |
| } |
| |
| static void setup_fec2_ioports(void) |
| { |
| immap_t *immap = (immap_t *) IMAP_ADDR; |
| |
| /* configure FEC2 pins */ |
| setbits32(&immap->im_cpm.cp_pepar, 0x0003fffc); |
| setbits32(&immap->im_cpm.cp_pedir, 0x0003fffc); |
| setbits32(&immap->im_cpm.cp_peso, 0x00037800); |
| clrbits32(&immap->im_cpm.cp_peso, 0x000087fc); |
| clrbits32(&immap->im_cpm.cp_cptr, 0x00000080); |
| } |
| |
| static void setup_scc3_ioports(void) |
| { |
| immap_t *immap = (immap_t *) IMAP_ADDR; |
| unsigned *bcsr_io; |
| |
| bcsr_io = ioremap(BCSR_ADDR, BCSR_SIZE); |
| |
| if (bcsr_io == NULL) { |
| printk(KERN_CRIT "Could not remap BCSR\n"); |
| return; |
| } |
| |
| /* Enable the PHY. |
| */ |
| setbits32(bcsr_io+4, BCSR4_ETH10_RST); |
| /* Configure port A pins for Txd and Rxd. |
| */ |
| setbits16(&immap->im_ioport.iop_papar, PA_ENET_RXD | PA_ENET_TXD); |
| clrbits16(&immap->im_ioport.iop_padir, PA_ENET_RXD | PA_ENET_TXD); |
| |
| /* Configure port C pins to enable CLSN and RENA. |
| */ |
| clrbits16(&immap->im_ioport.iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA); |
| clrbits16(&immap->im_ioport.iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA); |
| setbits16(&immap->im_ioport.iop_pcso, PC_ENET_CLSN | PC_ENET_RENA); |
| |
| /* Configure port E for TCLK and RCLK. |
| */ |
| setbits32(&immap->im_cpm.cp_pepar, PE_ENET_TCLK | PE_ENET_RCLK); |
| clrbits32(&immap->im_cpm.cp_pepar, PE_ENET_TENA); |
| clrbits32(&immap->im_cpm.cp_pedir, |
| PE_ENET_TCLK | PE_ENET_RCLK | PE_ENET_TENA); |
| clrbits32(&immap->im_cpm.cp_peso, PE_ENET_TCLK | PE_ENET_RCLK); |
| setbits32(&immap->im_cpm.cp_peso, PE_ENET_TENA); |
| |
| /* Configure Serial Interface clock routing. |
| * First, clear all SCC bits to zero, then set the ones we want. |
| */ |
| clrbits32(&immap->im_cpm.cp_sicr, SICR_ENET_MASK); |
| setbits32(&immap->im_cpm.cp_sicr, SICR_ENET_CLKRT); |
| |
| /* Disable Rx and Tx. SMC1 sshould be stopped if SCC3 eternet are used. |
| */ |
| immap->im_cpm.cp_smc[0].smc_smcmr &= ~(SMCMR_REN | SMCMR_TEN); |
| /* On the MPC885ADS SCC ethernet PHY is initialized in the full duplex mode |
| * by H/W setting after reset. SCC ethernet controller support only half duplex. |
| * This discrepancy of modes causes a lot of carrier lost errors. |
| */ |
| |
| /* In the original SCC enet driver the following code is placed at |
| the end of the initialization */ |
| setbits32(&immap->im_cpm.cp_pepar, PE_ENET_TENA); |
| clrbits32(&immap->im_cpm.cp_pedir, PE_ENET_TENA); |
| setbits32(&immap->im_cpm.cp_peso, PE_ENET_TENA); |
| |
| setbits32(bcsr_io+1, BCSR1_ETHEN); |
| iounmap(bcsr_io); |
| } |
| |
| static void mpc885ads_fixup_enet_pdata(struct platform_device *pdev, int fs_no) |
| { |
| struct fs_platform_info *fpi = pdev->dev.platform_data; |
| |
| volatile cpm8xx_t *cp; |
| bd_t *bd = (bd_t *) __res; |
| char *e; |
| int i; |
| |
| /* Get pointer to Communication Processor */ |
| cp = cpmp; |
| switch (fs_no) { |
| case fsid_fec1: |
| fpi = &mpc8xx_fec_pdata[0]; |
| fpi->init_ioports = &setup_fec1_ioports; |
| break; |
| case fsid_fec2: |
| fpi = &mpc8xx_fec_pdata[1]; |
| fpi->init_ioports = &setup_fec2_ioports; |
| break; |
| case fsid_scc3: |
| fpi = &mpc8xx_scc_pdata; |
| fpi->init_ioports = &setup_scc3_ioports; |
| mpc885ads_scc_phy_init(fpi->phy_addr); |
| break; |
| default: |
| printk(KERN_WARNING"Device %s is not supported!\n", pdev->name); |
| return; |
| } |
| |
| pdev->dev.platform_data = fpi; |
| fpi->fs_no = fs_no; |
| |
| e = (unsigned char *)&bd->bi_enetaddr; |
| for (i = 0; i < 6; i++) |
| fpi->macaddr[i] = *e++; |
| |
| fpi->macaddr[5 - pdev->id]++; |
| |
| } |
| |
| static void mpc885ads_fixup_fec_enet_pdata(struct platform_device *pdev, |
| int idx) |
| { |
| /* This is for FEC devices only */ |
| if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-fec"))) |
| return; |
| mpc885ads_fixup_enet_pdata(pdev, fsid_fec1 + pdev->id - 1); |
| } |
| |
| static void __init mpc885ads_fixup_scc_enet_pdata(struct platform_device *pdev, |
| int idx) |
| { |
| /* This is for SCC devices only */ |
| if (!pdev || !pdev->name || (!strstr(pdev->name, "fsl-cpm-scc"))) |
| return; |
| |
| mpc885ads_fixup_enet_pdata(pdev, fsid_scc1 + pdev->id - 1); |
| } |
| |
| /* SCC ethernet controller does not have MII management channel. FEC1 MII |
| * channel is used to communicate with the 10Mbit PHY. |
| */ |
| |
| #define MII_ECNTRL_PINMUX 0x4 |
| #define FEC_ECNTRL_PINMUX 0x00000004 |
| #define FEC_RCNTRL_MII_MODE 0x00000004 |
| |
| /* Make MII read/write commands. |
| */ |
| #define mk_mii_write(REG, VAL, PHY_ADDR) (0x50020000 | (((REG) & 0x1f) << 18) | \ |
| ((VAL) & 0xffff) | ((PHY_ADDR) << 23)) |
| |
| static void mpc885ads_scc_phy_init(char phy_addr) |
| { |
| volatile immap_t *immap; |
| volatile fec_t *fecp; |
| bd_t *bd; |
| |
| bd = (bd_t *) __res; |
| immap = (immap_t *) IMAP_ADDR; /* pointer to internal registers */ |
| fecp = &(immap->im_cpm.cp_fec); |
| |
| /* Enable MII pins of the FEC1 |
| */ |
| setbits16(&immap->im_ioport.iop_pdpar, 0x0080); |
| clrbits16(&immap->im_ioport.iop_pddir, 0x0080); |
| /* Set MII speed to 2.5 MHz |
| */ |
| out_be32(&fecp->fec_mii_speed, |
| ((((bd->bi_intfreq + 4999999) / 2500000) / 2) & 0x3F) << 1); |
| |
| /* Enable FEC pin MUX |
| */ |
| setbits32(&fecp->fec_ecntrl, MII_ECNTRL_PINMUX); |
| setbits32(&fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE); |
| |
| out_be32(&fecp->fec_mii_data, |
| mk_mii_write(MII_BMCR, BMCR_ISOLATE, phy_addr)); |
| udelay(100); |
| out_be32(&fecp->fec_mii_data, |
| mk_mii_write(MII_ADVERTISE, |
| ADVERTISE_10HALF | ADVERTISE_CSMA, phy_addr)); |
| udelay(100); |
| |
| /* Disable FEC MII settings |
| */ |
| clrbits32(&fecp->fec_ecntrl, MII_ECNTRL_PINMUX); |
| clrbits32(&fecp->fec_r_cntrl, FEC_RCNTRL_MII_MODE); |
| out_be32(&fecp->fec_mii_speed, 0); |
| } |
| |
| static int mpc885ads_platform_notify(struct device *dev) |
| { |
| |
| static const struct platform_notify_dev_map dev_map[] = { |
| { |
| .bus_id = "fsl-cpm-fec", |
| .rtn = mpc885ads_fixup_fec_enet_pdata, |
| }, |
| { |
| .bus_id = "fsl-cpm-scc", |
| .rtn = mpc885ads_fixup_scc_enet_pdata, |
| }, |
| { |
| .bus_id = NULL |
| } |
| }; |
| |
| platform_notify_map(dev_map,dev); |
| |
| } |
| |
| int __init mpc885ads_init(void) |
| { |
| printk(KERN_NOTICE "mpc885ads: Init\n"); |
| |
| platform_notify = mpc885ads_platform_notify; |
| |
| ppc_sys_device_initfunc(); |
| ppc_sys_device_disable_all(); |
| |
| ppc_sys_device_enable(MPC8xx_CPM_FEC1); |
| |
| #ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3 |
| ppc_sys_device_enable(MPC8xx_CPM_SCC1); |
| |
| #endif |
| #ifdef CONFIG_MPC8xx_SECOND_ETH_FEC2 |
| ppc_sys_device_enable(MPC8xx_CPM_FEC2); |
| #endif |
| |
| return 0; |
| } |
| |
| arch_initcall(mpc885ads_init); |