diff options
Diffstat (limited to 'arch/ppc/platforms/85xx/mpc8560_ads.c')
| -rw-r--r-- | arch/ppc/platforms/85xx/mpc8560_ads.c | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/arch/ppc/platforms/85xx/mpc8560_ads.c b/arch/ppc/platforms/85xx/mpc8560_ads.c new file mode 100644 index 000000000000..761b8c7b25d2 --- /dev/null +++ b/arch/ppc/platforms/85xx/mpc8560_ads.c @@ -0,0 +1,210 @@ +/* + * arch/ppc/platforms/85xx/mpc8560_ads.c + * + * MPC8560ADS board specific routines + * + * Maintainer: Kumar Gala <kumar.gala@freescale.com> + * + * Copyright 2004 Freescale Semiconductor Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/config.h> +#include <linux/stddef.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/reboot.h> +#include <linux/pci.h> +#include <linux/kdev_t.h> +#include <linux/major.h> +#include <linux/console.h> +#include <linux/delay.h> +#include <linux/irq.h> +#include <linux/seq_file.h> +#include <linux/root_dev.h> +#include <linux/serial.h> +#include <linux/tty.h> /* for linux/serial_core.h */ +#include <linux/serial_core.h> +#include <linux/initrd.h> +#include <linux/module.h> +#include <linux/fsl_devices.h> + +#include <asm/system.h> +#include <asm/pgtable.h> +#include <asm/page.h> +#include <asm/atomic.h> +#include <asm/time.h> +#include <asm/io.h> +#include <asm/machdep.h> +#include <asm/prom.h> +#include <asm/open_pic.h> +#include <asm/bootinfo.h> +#include <asm/pci-bridge.h> +#include <asm/mpc85xx.h> +#include <asm/irq.h> +#include <asm/immap_85xx.h> +#include <asm/kgdb.h> +#include <asm/ppc_sys.h> +#include <asm/cpm2.h> +#include <mm/mmu_decl.h> + +#include <syslib/cpm2_pic.h> +#include <syslib/ppc85xx_common.h> +#include <syslib/ppc85xx_setup.h> + +extern void cpm2_reset(void); + +/* ************************************************************************ + * + * Setup the architecture + * + */ + +static void __init +mpc8560ads_setup_arch(void) +{ + bd_t *binfo = (bd_t *) __res; + unsigned int freq; + struct gianfar_platform_data *pdata; + + cpm2_reset(); + + /* get the core frequency */ + freq = binfo->bi_intfreq; + + if (ppc_md.progress) + ppc_md.progress("mpc8560ads_setup_arch()", 0); + + /* Set loops_per_jiffy to a half-way reasonable value, + for use until calibrate_delay gets called. */ + loops_per_jiffy = freq / HZ; + +#ifdef CONFIG_PCI + /* setup PCI host bridges */ + mpc85xx_setup_hose(); +#endif + + /* setup the board related information for the enet controllers */ + pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC1); + pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; + pdata->interruptPHY = MPC85xx_IRQ_EXT5; + pdata->phyid = 0; + /* fixup phy address */ + pdata->phy_reg_addr += binfo->bi_immr_base; + memcpy(pdata->mac_addr, binfo->bi_enetaddr, 6); + + pdata = (struct gianfar_platform_data *) ppc_sys_get_pdata(MPC85xx_TSEC2); + pdata->board_flags = FSL_GIANFAR_BRD_HAS_PHY_INTR; + pdata->interruptPHY = MPC85xx_IRQ_EXT5; + pdata->phyid = 1; + /* fixup phy address */ + pdata->phy_reg_addr += binfo->bi_immr_base; + memcpy(pdata->mac_addr, binfo->bi_enet1addr, 6); + +#ifdef CONFIG_BLK_DEV_INITRD + if (initrd_start) + ROOT_DEV = Root_RAM0; + else +#endif +#ifdef CONFIG_ROOT_NFS + ROOT_DEV = Root_NFS; +#else + ROOT_DEV = Root_HDA1; +#endif +} + +static irqreturn_t cpm2_cascade(int irq, void *dev_id, struct pt_regs *regs) +{ + while ((irq = cpm2_get_irq(regs)) >= 0) + __do_IRQ(irq, regs); + return IRQ_HANDLED; +} + +static struct irqaction cpm2_irqaction = { + .handler = cpm2_cascade, + .flags = SA_INTERRUPT, + .mask = CPU_MASK_NONE, + .name = "cpm2_cascade", +}; + +static void __init +mpc8560_ads_init_IRQ(void) +{ + /* Setup OpenPIC */ + mpc85xx_ads_init_IRQ(); + + /* Setup CPM2 PIC */ + cpm2_init_IRQ(); + + setup_irq(MPC85xx_IRQ_CPM, &cpm2_irqaction); + + return; +} + + + +/* ************************************************************************ */ +void __init +platform_init(unsigned long r3, unsigned long r4, unsigned long r5, + unsigned long r6, unsigned long r7) +{ + /* parse_bootinfo must always be called first */ + parse_bootinfo(find_bootinfo()); + + /* + * If we were passed in a board information, copy it into the + * residual data area. + */ + if (r3) { + memcpy((void *) __res, (void *) (r3 + KERNELBASE), + sizeof (bd_t)); + + } +#if defined(CONFIG_BLK_DEV_INITRD) + /* + * If the init RAM disk has been configured in, and there's a valid + * starting address for it, set it up. + */ + if (r4) { + initrd_start = r4 + KERNELBASE; + initrd_end = r5 + KERNELBASE; + } +#endif /* CONFIG_BLK_DEV_INITRD */ + + /* Copy the kernel command line arguments to a safe place. */ + + if (r6) { + *(char *) (r7 + KERNELBASE) = 0; + strcpy(cmd_line, (char *) (r6 + KERNELBASE)); + } + + identify_ppc_sys_by_id(mfspr(SPRN_SVR)); + + /* setup the PowerPC module struct */ + ppc_md.setup_arch = mpc8560ads_setup_arch; + ppc_md.show_cpuinfo = mpc85xx_ads_show_cpuinfo; + + ppc_md.init_IRQ = mpc8560_ads_init_IRQ; + ppc_md.get_irq = openpic_get_irq; + + ppc_md.restart = mpc85xx_restart; + ppc_md.power_off = mpc85xx_power_off; + ppc_md.halt = mpc85xx_halt; + + ppc_md.find_end_of_memory = mpc85xx_find_end_of_memory; + + ppc_md.time_init = NULL; + ppc_md.set_rtc_time = NULL; + ppc_md.get_rtc_time = NULL; + ppc_md.calibrate_decr = mpc85xx_calibrate_decr; + + if (ppc_md.progress) + ppc_md.progress("mpc8560ads_init(): exit", 0); + + return; +} |