diff options
Diffstat (limited to 'arch/ppc/platforms/mpc885ads_setup.c')
| -rw-r--r-- | arch/ppc/platforms/mpc885ads_setup.c | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/arch/ppc/platforms/mpc885ads_setup.c b/arch/ppc/platforms/mpc885ads_setup.c new file mode 100644 index 00000000000..50a99e5f7c6 --- /dev/null +++ b/arch/ppc/platforms/mpc885ads_setup.c @@ -0,0 +1,389 @@ +/*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); |