projects / mirror_ubuntu-artful-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 77e03a22 KG |
1 | /* |
| 2 | * Based on MPC8560 ADS and arch/ppc stx_gp3 ports | |
| 3 | * | |
| 4 | * Maintained by Kumar Gala (see MAINTAINERS for contact information) | |
| 5 | * | |
| 6 | * Copyright 2008 Freescale Semiconductor Inc. | |
| 7 | * | |
| 8 | * Dan Malek <dan@embeddededge.com> | |
| 9 | * Copyright 2004 Embedded Edge, LLC | |
| 10 | * | |
| 11 | * Copied from mpc8560_ads.c | |
| 12 | * Copyright 2002, 2003 Motorola Inc. | |
| 13 | * | |
| 14 | * Ported to 2.6, Matt Porter <mporter@kernel.crashing.org> | |
| 15 | * Copyright 2004-2005 MontaVista Software, Inc. | |
| 16 | * | |
| 17 | * This program is free software; you can redistribute it and/or modify it | |
| 18 | * under the terms of the GNU General Public License as published by the | |
| 19 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 20 | * option) any later version. | |
| 21 | */ | |
| 22 | ||
| 23 | #include <linux/stddef.h> | |
| 24 | #include <linux/kernel.h> | |
| 25 | #include <linux/pci.h> | |
| 26 | #include <linux/kdev_t.h> | |
| 27 | #include <linux/delay.h> | |
| 28 | #include <linux/seq_file.h> | |
| 29 | #include <linux/of_platform.h> | |
| 30 | ||
| 31 | #include <asm/system.h> | |
| 32 | #include <asm/time.h> | |
| 33 | #include <asm/machdep.h> | |
| 34 | #include <asm/pci-bridge.h> | |
| 35 | #include <asm/mpic.h> | |
| 36 | #include <asm/prom.h> | |
| 37 | #include <mm/mmu_decl.h> | |
| 38 | #include <asm/udbg.h> | |
| 39 | ||
| 40 | #include <sysdev/fsl_soc.h> | |
| 41 | #include <sysdev/fsl_pci.h> | |
| 42 | ||
| 43 | #ifdef CONFIG_CPM2 | |
| 44 | #include <asm/cpm2.h> | |
| 45 | #include <sysdev/cpm2_pic.h> | |
| 46 | ||
| 47 | static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) | |
| 48 | { | |
| 49 | int cascade_irq; | |
| 50 | ||
| 51 | while ((cascade_irq = cpm2_get_irq()) >= 0) | |
| 52 | generic_handle_irq(cascade_irq); | |
| 53 | ||
| 54 | desc->chip->eoi(irq); | |
| 55 | } | |
| 56 | #endif /* CONFIG_CPM2 */ | |
| 57 | ||
| 58 | static void __init stx_gp3_pic_init(void) | |
| 59 | { | |
| 60 | struct mpic *mpic; | |
| 61 | struct resource r; | |
| 62 | struct device_node *np; | |
| 63 | #ifdef CONFIG_CPM2 | |
| 64 | int irq; | |
| 65 | #endif | |
| 66 | ||
| 67 | np = of_find_node_by_type(NULL, "open-pic"); | |
| 68 | if (!np) { | |
| 69 | printk(KERN_ERR "Could not find open-pic node\n"); | |
| 70 | return; | |
| 71 | } | |
| 72 | ||
| 73 | if (of_address_to_resource(np, 0, &r)) { | |
| 74 | printk(KERN_ERR "Could not map mpic register space\n"); | |
| 75 | of_node_put(np); | |
| 76 | return; | |
| 77 | } | |
| 78 | ||
| 79 | mpic = mpic_alloc(np, r.start, | |
| 80 | MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, | |
| 81 | 0, 256, " OpenPIC "); | |
| 82 | BUG_ON(mpic == NULL); | |
| 83 | of_node_put(np); | |
| 84 | ||
| 85 | mpic_init(mpic); | |
| 86 | ||
| 87 | #ifdef CONFIG_CPM2 | |
| 88 | /* Setup CPM2 PIC */ | |
| 89 | np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); | |
| 90 | if (np == NULL) { | |
| 91 | printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); | |
| 92 | return; | |
| 93 | } | |
| 94 | irq = irq_of_parse_and_map(np, 0); | |
| 95 | ||
| 96 | if (irq == NO_IRQ) { | |
| 97 | of_node_put(np); | |
| 98 | printk(KERN_ERR "PIC init: got no IRQ for cpm cascade\n"); | |
| 99 | return; | |
| 100 | } | |
| 101 | ||
| 102 | cpm2_pic_init(np); | |
| 103 | of_node_put(np); | |
| 104 | set_irq_chained_handler(irq, cpm2_cascade); | |
| 105 | #endif | |
| 106 | } | |
| 107 | ||
| 108 | /* | |
| 109 | * Setup the architecture | |
| 110 | */ | |
| 111 | static void __init stx_gp3_setup_arch(void) | |
| 112 | { | |
| 113 | #ifdef CONFIG_PCI | |
| 114 | struct device_node *np; | |
| 115 | #endif | |
| 116 | ||
| 117 | if (ppc_md.progress) | |
| 118 | ppc_md.progress("stx_gp3_setup_arch()", 0); | |
| 119 | ||
| 120 | #ifdef CONFIG_CPM2 | |
| 121 | cpm2_reset(); | |
| 122 | #endif | |
| 123 | ||
| 124 | #ifdef CONFIG_PCI | |
| 125 | for_each_compatible_node(np, "pci", "fsl,mpc8540-pci") | |
| 126 | fsl_add_bridge(np, 1); | |
| 127 | #endif | |
| 128 | } | |
| 129 | ||
| 130 | static void stx_gp3_show_cpuinfo(struct seq_file *m) | |
| 131 | { | |
| 132 | uint pvid, svid, phid1; | |
| 77e03a22 KG |
133 | |
| 134 | pvid = mfspr(SPRN_PVR); | |
| 135 | svid = mfspr(SPRN_SVR); | |
| 136 | ||
| 8354be9c | 137 | seq_printf(m, "Vendor\t\t: RPC Electronics STx\n"); |
| 77e03a22 KG |
138 | seq_printf(m, "PVR\t\t: 0x%x\n", pvid); |
| 139 | seq_printf(m, "SVR\t\t: 0x%x\n", svid); | |
| 140 | ||
| 141 | /* Display cpu Pll setting */ | |
| 142 | phid1 = mfspr(SPRN_HID1); | |
| 143 | seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); | |
| 77e03a22 KG |
144 | } |
| 145 | ||
| 146 | static struct of_device_id __initdata of_bus_ids[] = { | |
| 77e03a22 | 147 | { .compatible = "simple-bus", }, |
| 84ba4a58 | 148 | { .compatible = "gianfar", }, |
| 77e03a22 KG |
149 | {}, |
| 150 | }; | |
| 151 | ||
| 152 | static int __init declare_of_platform_devices(void) | |
| 153 | { | |
| 154 | of_platform_bus_probe(NULL, of_bus_ids, NULL); | |
| 155 | ||
| 156 | return 0; | |
| 157 | } | |
| 158 | machine_device_initcall(stx_gp3, declare_of_platform_devices); | |
| 159 | ||
| 160 | /* | |
| 161 | * Called very early, device-tree isn't unflattened | |
| 162 | */ | |
| 163 | static int __init stx_gp3_probe(void) | |
| 164 | { | |
| 165 | unsigned long root = of_get_flat_dt_root(); | |
| 166 | ||
| 167 | return of_flat_dt_is_compatible(root, "stx,gp3-8560"); | |
| 168 | } | |
| 169 | ||
| 170 | define_machine(stx_gp3) { | |
| 171 | .name = "STX GP3", | |
| 172 | .probe = stx_gp3_probe, | |
| 173 | .setup_arch = stx_gp3_setup_arch, | |
| 174 | .init_IRQ = stx_gp3_pic_init, | |
| 175 | .show_cpuinfo = stx_gp3_show_cpuinfo, | |
| 176 | .get_irq = mpic_get_irq, | |
| 177 | .restart = fsl_rstcr_restart, | |
| 178 | .calibrate_decr = generic_calibrate_decr, | |
| 179 | .progress = udbg_progress, | |
| 180 | }; |