diff options
Diffstat (limited to 'arch/powerpc/platforms/8xx/mpc885ads_setup.c')
| -rw-r--r-- | arch/powerpc/platforms/8xx/mpc885ads_setup.c | 387 |
1 files changed, 387 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/8xx/mpc885ads_setup.c b/arch/powerpc/platforms/8xx/mpc885ads_setup.c new file mode 100644 index 00000000000..c5fefdf66c0 --- /dev/null +++ b/arch/powerpc/platforms/8xx/mpc885ads_setup.c @@ -0,0 +1,387 @@ +/*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/init.h> +#include <linux/module.h> +#include <linux/param.h> +#include <linux/string.h> +#include <linux/ioport.h> +#include <linux/device.h> +#include <linux/delay.h> +#include <linux/root_dev.h> + +#include <linux/fs_enet_pd.h> +#include <linux/fs_uart_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/mpc8xx.h> +#include <asm/8xx_immap.h> +#include <asm/commproc.h> +#include <asm/fs_pd.h> +#include <asm/prom.h> + +extern void cpm_reset(void); +extern void mpc8xx_show_cpuinfo(struct seq_file*); +extern void mpc8xx_restart(char *cmd); +extern void mpc8xx_calibrate_decr(void); +extern int mpc8xx_set_rtc_time(struct rtc_time *tm); +extern void mpc8xx_get_rtc_time(struct rtc_time *tm); +extern void m8xx_pic_init(void); +extern unsigned int mpc8xx_get_irq(void); + +static void init_smc1_uart_ioports(struct fs_uart_platform_info* fpi); +static void init_smc2_uart_ioports(struct fs_uart_platform_info* fpi); +static void init_scc3_ioports(struct fs_platform_info* ptr); + +void __init mpc885ads_board_setup(void) +{ + cpm8xx_t *cp; + unsigned int *bcsr_io; + u8 tmpval8; + +#ifdef CONFIG_FS_ENET + iop8xx_t *io_port; +#endif + + bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); + cp = (cpm8xx_t *)immr_map(im_cpm); + + if (bcsr_io == NULL) { + printk(KERN_CRIT "Could not remap BCSR\n"); + return; + } +#ifdef CONFIG_SERIAL_CPM_SMC1 + clrbits32(bcsr_io, BCSR1_RS232EN_1); + clrbits32(&cp->cp_simode, 0xe0000000 >> 17); /* brg1 */ + tmpval8 = in_8(&(cp->cp_smc[0].smc_smcm)) | (SMCM_RX | SMCM_TX); + out_8(&(cp->cp_smc[0].smc_smcm), tmpval8); + clrbits16(&cp->cp_smc[0].smc_smcmr, SMCMR_REN | SMCMR_TEN); /* brg1 */ +#else + setbits32(bcsr_io,BCSR1_RS232EN_1); + out_be16(&cp->cp_smc[0].smc_smcmr, 0); + out_8(&cp->cp_smc[0].smc_smce, 0); +#endif + +#ifdef CONFIG_SERIAL_CPM_SMC2 + clrbits32(bcsr_io,BCSR1_RS232EN_2); + clrbits32(&cp->cp_simode, 0xe0000000 >> 1); + setbits32(&cp->cp_simode, 0x20000000 >> 1); /* brg2 */ + tmpval8 = in_8(&(cp->cp_smc[1].smc_smcm)) | (SMCM_RX | SMCM_TX); + out_8(&(cp->cp_smc[1].smc_smcm), tmpval8); + clrbits16(&cp->cp_smc[1].smc_smcmr, SMCMR_REN | SMCMR_TEN); + + init_smc2_uart_ioports(0); +#else + setbits32(bcsr_io,BCSR1_RS232EN_2); + out_be16(&cp->cp_smc[1].smc_smcmr, 0); + out_8(&cp->cp_smc[1].smc_smce, 0); +#endif + immr_unmap(cp); + iounmap(bcsr_io); + +#ifdef CONFIG_FS_ENET + /* use MDC for MII (common) */ + io_port = (iop8xx_t*)immr_map(im_ioport); + setbits16(&io_port->iop_pdpar, 0x0080); + clrbits16(&io_port->iop_pddir, 0x0080); + + bcsr_io = ioremap(BCSR5, sizeof(unsigned long)); + clrbits32(bcsr_io,BCSR5_MII1_EN); + clrbits32(bcsr_io,BCSR5_MII1_RST); +#ifndef CONFIG_FC_ENET_HAS_SCC + clrbits32(bcsr_io,BCSR5_MII2_EN); + clrbits32(bcsr_io,BCSR5_MII2_RST); + +#endif + iounmap(bcsr_io); + immr_unmap(io_port); + +#endif +} + + +static void init_fec1_ioports(struct fs_platform_info* ptr) +{ + cpm8xx_t *cp = (cpm8xx_t *)immr_map(im_cpm); + iop8xx_t *io_port = (iop8xx_t *)immr_map(im_ioport); + + /* configure FEC1 pins */ + setbits16(&io_port->iop_papar, 0xf830); + setbits16(&io_port->iop_padir, 0x0830); + clrbits16(&io_port->iop_padir, 0xf000); + + setbits32(&cp->cp_pbpar, 0x00001001); + clrbits32(&cp->cp_pbdir, 0x00001001); + + setbits16(&io_port->iop_pcpar, 0x000c); + clrbits16(&io_port->iop_pcdir, 0x000c); + + setbits32(&cp->cp_pepar, 0x00000003); + setbits32(&cp->cp_pedir, 0x00000003); + clrbits32(&cp->cp_peso, 0x00000003); + clrbits32(&cp->cp_cptr, 0x00000100); + + immr_unmap(io_port); + immr_unmap(cp); +} + + +static void init_fec2_ioports(struct fs_platform_info* ptr) +{ + cpm8xx_t *cp = (cpm8xx_t *)immr_map(im_cpm); + iop8xx_t *io_port = (iop8xx_t *)immr_map(im_ioport); + + /* configure FEC2 pins */ + setbits32(&cp->cp_pepar, 0x0003fffc); + setbits32(&cp->cp_pedir, 0x0003fffc); + clrbits32(&cp->cp_peso, 0x000087fc); + setbits32(&cp->cp_peso, 0x00037800); + clrbits32(&cp->cp_cptr, 0x00000080); + + immr_unmap(io_port); + immr_unmap(cp); +} + +void init_fec_ioports(struct fs_platform_info *fpi) +{ + int fec_no = fs_get_fec_index(fpi->fs_no); + + switch (fec_no) { + case 0: + init_fec1_ioports(fpi); + break; + case 1: + init_fec2_ioports(fpi); + break; + default: + printk(KERN_ERR "init_fec_ioports: invalid FEC number\n"); + return; + } +} + +static void init_scc3_ioports(struct fs_platform_info* fpi) +{ + unsigned *bcsr_io; + iop8xx_t *io_port; + cpm8xx_t *cp; + + bcsr_io = ioremap(BCSR_ADDR, BCSR_SIZE); + io_port = (iop8xx_t *)immr_map(im_ioport); + cp = (cpm8xx_t *)immr_map(im_cpm); + + if (bcsr_io == NULL) { + printk(KERN_CRIT "Could not remap BCSR\n"); + return; + } + + /* Enable the PHY. + */ + clrbits32(bcsr_io+4, BCSR4_ETH10_RST); + udelay(1000); + setbits32(bcsr_io+4, BCSR4_ETH10_RST); + /* Configure port A pins for Txd and Rxd. + */ + setbits16(&io_port->iop_papar, PA_ENET_RXD | PA_ENET_TXD); + clrbits16(&io_port->iop_padir, PA_ENET_RXD | PA_ENET_TXD); + + /* Configure port C pins to enable CLSN and RENA. + */ + clrbits16(&io_port->iop_pcpar, PC_ENET_CLSN | PC_ENET_RENA); + clrbits16(&io_port->iop_pcdir, PC_ENET_CLSN | PC_ENET_RENA); + setbits16(&io_port->iop_pcso, PC_ENET_CLSN | PC_ENET_RENA); + + /* Configure port E for TCLK and RCLK. + */ + setbits32(&cp->cp_pepar, PE_ENET_TCLK | PE_ENET_RCLK); + clrbits32(&cp->cp_pepar, PE_ENET_TENA); + clrbits32(&cp->cp_pedir, + PE_ENET_TCLK | PE_ENET_RCLK | PE_ENET_TENA); + clrbits32(&cp->cp_peso, PE_ENET_TCLK | PE_ENET_RCLK); + setbits32(&cp->cp_peso, PE_ENET_TENA); + + /* Configure Serial Interface clock routing. + * First, clear all SCC bits to zero, then set the ones we want. + */ + clrbits32(&cp->cp_sicr, SICR_ENET_MASK); + setbits32(&cp->cp_sicr, SICR_ENET_CLKRT); + + /* Disable Rx and Tx. SMC1 sshould be stopped if SCC3 eternet are used. + */ + clrbits16(&cp->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(&cp->cp_pepar, PE_ENET_TENA); + clrbits32(&cp->cp_pedir, PE_ENET_TENA); + setbits32(&cp->cp_peso, PE_ENET_TENA); + + setbits32(bcsr_io+4, BCSR1_ETHEN); + iounmap(bcsr_io); + immr_unmap(io_port); + immr_unmap(cp); +} + +void init_scc_ioports(struct fs_platform_info *fpi) +{ + int scc_no = fs_get_scc_index(fpi->fs_no); + + switch (scc_no) { + case 2: + init_scc3_ioports(fpi); + break; + default: + printk(KERN_ERR "init_scc_ioports: invalid SCC number\n"); + return; + } +} + + + +static void init_smc1_uart_ioports(struct fs_uart_platform_info* ptr) +{ + unsigned *bcsr_io; + cpm8xx_t *cp; + + cp = (cpm8xx_t *)immr_map(im_cpm); + setbits32(&cp->cp_pepar, 0x000000c0); + clrbits32(&cp->cp_pedir, 0x000000c0); + clrbits32(&cp->cp_peso, 0x00000040); + setbits32(&cp->cp_peso, 0x00000080); + immr_unmap(cp); + + bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); + + if (bcsr_io == NULL) { + printk(KERN_CRIT "Could not remap BCSR1\n"); + return; + } + clrbits32(bcsr_io,BCSR1_RS232EN_1); + iounmap(bcsr_io); +} + +static void init_smc2_uart_ioports(struct fs_uart_platform_info* fpi) +{ + unsigned *bcsr_io; + cpm8xx_t *cp; + + cp = (cpm8xx_t *)immr_map(im_cpm); + setbits32(&cp->cp_pepar, 0x00000c00); + clrbits32(&cp->cp_pedir, 0x00000c00); + clrbits32(&cp->cp_peso, 0x00000400); + setbits32(&cp->cp_peso, 0x00000800); + immr_unmap(cp); + + bcsr_io = ioremap(BCSR1, sizeof(unsigned long)); + + if (bcsr_io == NULL) { + printk(KERN_CRIT "Could not remap BCSR1\n"); + return; + } + clrbits32(bcsr_io,BCSR1_RS232EN_2); + iounmap(bcsr_io); +} + +void init_smc_ioports(struct fs_uart_platform_info *data) +{ + int smc_no = fs_uart_id_fsid2smc(data->fs_no); + + switch (smc_no) { + case 0: + init_smc1_uart_ioports(data); + data->brg = data->clk_rx; + break; + case 1: + init_smc2_uart_ioports(data); + data->brg = data->clk_rx; + break; + default: + printk(KERN_ERR "init_scc_ioports: invalid SCC number\n"); + return; + } +} + +int platform_device_skip(char *model, int id) +{ +#ifdef CONFIG_MPC8xx_SECOND_ETH_SCC3 + const char *dev = "FEC"; + int n = 2; +#else + const char *dev = "SCC"; + int n = 3; +#endif + + if (!strcmp(model, dev) && n == id) + return 1; + + return 0; +} + +static void __init mpc885ads_setup_arch(void) +{ + struct device_node *cpu; + + cpu = of_find_node_by_type(NULL, "cpu"); + if (cpu != 0) { + const unsigned int *fp; + + fp = get_property(cpu, "clock-frequency", NULL); + if (fp != 0) + loops_per_jiffy = *fp / HZ; + else + loops_per_jiffy = 50000000 / HZ; + of_node_put(cpu); + } + + cpm_reset(); + + mpc885ads_board_setup(); + + ROOT_DEV = Root_NFS; +} + +static int __init mpc885ads_probe(void) +{ + char *model = of_get_flat_dt_prop(of_get_flat_dt_root(), + "model", NULL); + if (model == NULL) + return 0; + if (strcmp(model, "MPC885ADS")) + return 0; + + return 1; +} + +define_machine(mpc885_ads) { + .name = "MPC885 ADS", + .probe = mpc885ads_probe, + .setup_arch = mpc885ads_setup_arch, + .init_IRQ = m8xx_pic_init, + .show_cpuinfo = mpc8xx_show_cpuinfo, + .get_irq = mpc8xx_get_irq, + .restart = mpc8xx_restart, + .calibrate_decr = mpc8xx_calibrate_decr, + .set_rtc_time = mpc8xx_set_rtc_time, + .get_rtc_time = mpc8xx_get_rtc_time, +}; |