diff options
Diffstat (limited to 'arch/powerpc/platforms/85xx/p1023_rds.c')
| -rw-r--r-- | arch/powerpc/platforms/85xx/p1023_rds.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/85xx/p1023_rds.c b/arch/powerpc/platforms/85xx/p1023_rds.c new file mode 100644 index 000000000000..835e0b335bfa --- /dev/null +++ b/arch/powerpc/platforms/85xx/p1023_rds.c @@ -0,0 +1,162 @@ +/* + * Copyright 2010-2011 Freescale Semiconductor, Inc. + * + * Author: Roy Zang <tie-fei.zang@freescale.com> + * + * Description: + * P1023 RDS Board Setup + * + * 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/kernel.h> +#include <linux/init.h> +#include <linux/errno.h> +#include <linux/pci.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/fsl_devices.h> +#include <linux/of_platform.h> +#include <linux/of_device.h> + +#include <asm/system.h> +#include <asm/time.h> +#include <asm/machdep.h> +#include <asm/pci-bridge.h> +#include <mm/mmu_decl.h> +#include <asm/prom.h> +#include <asm/udbg.h> +#include <asm/mpic.h> + +#include <sysdev/fsl_soc.h> +#include <sysdev/fsl_pci.h> + +/* ************************************************************************ + * + * Setup the architecture + * + */ +#ifdef CONFIG_SMP +void __init mpc85xx_smp_init(void); +#endif + +static void __init mpc85xx_rds_setup_arch(void) +{ + struct device_node *np; + + if (ppc_md.progress) + ppc_md.progress("p1023_rds_setup_arch()", 0); + + /* Map BCSR area */ + np = of_find_node_by_name(NULL, "bcsr"); + if (np != NULL) { + static u8 __iomem *bcsr_regs; + + bcsr_regs = of_iomap(np, 0); + of_node_put(np); + + if (!bcsr_regs) { + printk(KERN_ERR + "BCSR: Failed to map bcsr register space\n"); + return; + } else { +#define BCSR15_I2C_BUS0_SEG_CLR 0x07 +#define BCSR15_I2C_BUS0_SEG2 0x02 +/* + * Note: Accessing exclusively i2c devices. + * + * The i2c controller selects initially ID EEPROM in the u-boot; + * but if menu configuration selects RTC support in the kernel, + * the i2c controller switches to select RTC chip in the kernel. + */ +#ifdef CONFIG_RTC_CLASS + /* Enable RTC chip on the segment #2 of i2c */ + clrbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG_CLR); + setbits8(&bcsr_regs[15], BCSR15_I2C_BUS0_SEG2); +#endif + + iounmap(bcsr_regs); + } + } + +#ifdef CONFIG_PCI + for_each_compatible_node(np, "pci", "fsl,p1023-pcie") + fsl_add_bridge(np, 0); +#endif + +#ifdef CONFIG_SMP + mpc85xx_smp_init(); +#endif +} + +static struct of_device_id p1023_ids[] = { + { .type = "soc", }, + { .compatible = "soc", }, + { .compatible = "simple-bus", }, + {}, +}; + + +static int __init p1023_publish_devices(void) +{ + of_platform_bus_probe(NULL, p1023_ids, NULL); + + return 0; +} + +machine_device_initcall(p1023_rds, p1023_publish_devices); + +static void __init mpc85xx_rds_pic_init(void) +{ + struct mpic *mpic; + struct resource r; + struct device_node *np = NULL; + + np = of_find_node_by_type(NULL, "open-pic"); + if (!np) { + printk(KERN_ERR "Could not find open-pic node\n"); + return; + } + + if (of_address_to_resource(np, 0, &r)) { + printk(KERN_ERR "Failed to map mpic register space\n"); + of_node_put(np); + return; + } + + mpic = mpic_alloc(np, r.start, + MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN | + MPIC_BROKEN_FRR_NIRQS | MPIC_SINGLE_DEST_CPU, + 0, 256, " OpenPIC "); + + BUG_ON(mpic == NULL); + of_node_put(np); + + mpic_init(mpic); +} + +static int __init p1023_rds_probe(void) +{ + unsigned long root = of_get_flat_dt_root(); + + return of_flat_dt_is_compatible(root, "fsl,P1023RDS"); + +} + +define_machine(p1023_rds) { + .name = "P1023 RDS", + .probe = p1023_rds_probe, + .setup_arch = mpc85xx_rds_setup_arch, + .init_IRQ = mpc85xx_rds_pic_init, + .get_irq = mpic_get_irq, + .restart = fsl_rstcr_restart, + .calibrate_decr = generic_calibrate_decr, + .progress = udbg_progress, +#ifdef CONFIG_PCI + .pcibios_fixup_bus = fsl_pcibios_fixup_bus, +#endif +}; + |