| /* |
| * arch/powerpc/platforms/83xx/mpc834x_itx.c |
| * |
| * MPC834x ITX board specific routines |
| * |
| * Maintainer: Kumar Gala <galak@kernel.crashing.org> |
| * |
| * 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/seq_file.h> |
| #include <linux/root_dev.h> |
| |
| #include <asm/system.h> |
| #include <asm/atomic.h> |
| #include <asm/time.h> |
| #include <asm/io.h> |
| #include <asm/machdep.h> |
| #include <asm/ipic.h> |
| #include <asm/bootinfo.h> |
| #include <asm/irq.h> |
| #include <asm/prom.h> |
| #include <asm/udbg.h> |
| #include <sysdev/fsl_soc.h> |
| |
| #include "mpc83xx.h" |
| |
| #include <platforms/83xx/mpc834x_sys.h> |
| |
| #ifndef CONFIG_PCI |
| unsigned long isa_io_base = 0; |
| unsigned long isa_mem_base = 0; |
| #endif |
| |
| #ifdef CONFIG_PCI |
| static int |
| mpc83xx_map_irq(struct pci_dev *dev, unsigned char idsel, unsigned char pin) |
| { |
| static char pci_irq_table[][4] = |
| /* |
| * PCI IDSEL/INTPIN->INTLINE |
| * A B C D |
| */ |
| { |
| {PIRQB, PIRQC, PIRQD, PIRQA}, /* idsel 0x0e */ |
| {PIRQA, PIRQB, PIRQC, PIRQD}, /* idsel 0x0f */ |
| {PIRQC, PIRQD, PIRQA, PIRQB}, /* idsel 0x10 */ |
| }; |
| |
| const long min_idsel = 0x0e, max_idsel = 0x10, irqs_per_slot = 4; |
| return PCI_IRQ_TABLE_LOOKUP; |
| } |
| #endif /* CONFIG_PCI */ |
| |
| /* ************************************************************************ |
| * |
| * Setup the architecture |
| * |
| */ |
| static void __init mpc834x_itx_setup_arch(void) |
| { |
| struct device_node *np; |
| |
| if (ppc_md.progress) |
| ppc_md.progress("mpc834x_itx_setup_arch()", 0); |
| |
| np = of_find_node_by_type(NULL, "cpu"); |
| if (np != 0) { |
| const unsigned int *fp = |
| get_property(np, "clock-frequency", NULL); |
| if (fp != 0) |
| loops_per_jiffy = *fp / HZ; |
| else |
| loops_per_jiffy = 50000000 / HZ; |
| of_node_put(np); |
| } |
| #ifdef CONFIG_PCI |
| for (np = NULL; (np = of_find_node_by_type(np, "pci")) != NULL;) |
| add_bridge(np); |
| |
| ppc_md.pci_swizzle = common_swizzle; |
| ppc_md.pci_map_irq = mpc83xx_map_irq; |
| ppc_md.pci_exclude_device = mpc83xx_exclude_device; |
| #endif |
| |
| #ifdef CONFIG_ROOT_NFS |
| ROOT_DEV = Root_NFS; |
| #else |
| ROOT_DEV = Root_HDA1; |
| #endif |
| } |
| |
| void __init mpc834x_itx_init_IRQ(void) |
| { |
| u8 senses[8] = { |
| 0, /* EXT 0 */ |
| IRQ_SENSE_LEVEL, /* EXT 1 */ |
| IRQ_SENSE_LEVEL, /* EXT 2 */ |
| 0, /* EXT 3 */ |
| #ifdef CONFIG_PCI |
| IRQ_SENSE_LEVEL, /* EXT 4 */ |
| IRQ_SENSE_LEVEL, /* EXT 5 */ |
| IRQ_SENSE_LEVEL, /* EXT 6 */ |
| IRQ_SENSE_LEVEL, /* EXT 7 */ |
| #else |
| 0, /* EXT 4 */ |
| 0, /* EXT 5 */ |
| 0, /* EXT 6 */ |
| 0, /* EXT 7 */ |
| #endif |
| }; |
| |
| ipic_init(get_immrbase() + 0x00700, 0, 0, senses, 8); |
| |
| /* Initialize the default interrupt mapping priorities, |
| * in case the boot rom changed something on us. |
| */ |
| ipic_set_default_priority(); |
| } |
| |
| /* |
| * Called very early, MMU is off, device-tree isn't unflattened |
| */ |
| static int __init mpc834x_itx_probe(void) |
| { |
| /* We always match for now, eventually we should look at the flat |
| dev tree to ensure this is the board we are suppose to run on |
| */ |
| return 1; |
| } |
| |
| define_machine(mpc834x_itx) { |
| .name = "MPC834x ITX", |
| .probe = mpc834x_itx_probe, |
| .setup_arch = mpc834x_itx_setup_arch, |
| .init_IRQ = mpc834x_itx_init_IRQ, |
| .get_irq = ipic_get_irq, |
| .restart = mpc83xx_restart, |
| .time_init = mpc83xx_time_init, |
| .calibrate_decr = generic_calibrate_decr, |
| .progress = udbg_progress, |
| }; |