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Diffstat (limited to '')
-rw-r--r-- | arch/powerpc/platforms/embedded6xx/storcenter.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/embedded6xx/storcenter.c b/arch/powerpc/platforms/embedded6xx/storcenter.c new file mode 100644 index 000000000..5f16e80b6 --- /dev/null +++ b/arch/powerpc/platforms/embedded6xx/storcenter.c @@ -0,0 +1,127 @@ +/* + * Board setup routines for the storcenter + * + * Copyright 2007 (C) Oyvind Repvik (nail@nslu2-linux.org) + * Copyright 2007 Andy Wilcox, Jon Loeliger + * + * Based on linkstation.c by G. Liakhovetski + * + * 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/kernel.h> +#include <linux/pci.h> +#include <linux/initrd.h> +#include <linux/of_platform.h> + +#include <asm/time.h> +#include <asm/mpic.h> +#include <asm/pci-bridge.h> + +#include "mpc10x.h" + + +static const struct of_device_id storcenter_of_bus[] __initconst = { + { .name = "soc", }, + {}, +}; + +static int __init storcenter_device_probe(void) +{ + of_platform_bus_probe(NULL, storcenter_of_bus, NULL); + return 0; +} +machine_device_initcall(storcenter, storcenter_device_probe); + + +static int __init storcenter_add_bridge(struct device_node *dev) +{ +#ifdef CONFIG_PCI + int len; + struct pci_controller *hose; + const int *bus_range; + + printk("Adding PCI host bridge %pOF\n", dev); + + hose = pcibios_alloc_controller(dev); + if (hose == NULL) + return -ENOMEM; + + bus_range = of_get_property(dev, "bus-range", &len); + hose->first_busno = bus_range ? bus_range[0] : 0; + hose->last_busno = bus_range ? bus_range[1] : 0xff; + + setup_indirect_pci(hose, MPC10X_MAPB_CNFG_ADDR, MPC10X_MAPB_CNFG_DATA, 0); + + /* Interpret the "ranges" property */ + /* This also maps the I/O region and sets isa_io/mem_base */ + pci_process_bridge_OF_ranges(hose, dev, 1); +#endif + + return 0; +} + +static void __init storcenter_setup_arch(void) +{ + printk(KERN_INFO "IOMEGA StorCenter\n"); +} + +static void __init storcenter_setup_pci(void) +{ + struct device_node *np; + + /* Lookup PCI host bridges */ + for_each_compatible_node(np, "pci", "mpc10x-pci") + storcenter_add_bridge(np); +} + +/* + * Interrupt setup and service. Interrupts on the turbostation come + * from the four PCI slots plus onboard 8241 devices: I2C, DUART. + */ +static void __init storcenter_init_IRQ(void) +{ + struct mpic *mpic; + + mpic = mpic_alloc(NULL, 0, 0, 16, 0, " OpenPIC "); + BUG_ON(mpic == NULL); + + /* + * 16 Serial Interrupts followed by 16 Internal Interrupts. + * I2C is the second internal, so it is at 17, 0x11020. + */ + mpic_assign_isu(mpic, 0, mpic->paddr + 0x10200); + mpic_assign_isu(mpic, 1, mpic->paddr + 0x11000); + + mpic_init(mpic); +} + +static void __noreturn storcenter_restart(char *cmd) +{ + local_irq_disable(); + + /* Set exception prefix high - to the firmware */ + mtmsr(mfmsr() | MSR_IP); + isync(); + + /* Wait for reset to happen */ + for (;;) ; +} + +static int __init storcenter_probe(void) +{ + return of_machine_is_compatible("iomega,storcenter"); +} + +define_machine(storcenter){ + .name = "IOMEGA StorCenter", + .probe = storcenter_probe, + .setup_arch = storcenter_setup_arch, + .discover_phbs = storcenter_setup_pci, + .init_IRQ = storcenter_init_IRQ, + .get_irq = mpic_get_irq, + .restart = storcenter_restart, + .calibrate_decr = generic_calibrate_decr, +}; |