4e8aae89a3
This adds support for the Wind River SBC8641D board, based largely on the mpc86xx_hpcn support. The biggest difference is the lack of the Uli and the i8259 cascade, which simplifies things. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
164 lines
3.4 KiB
C
164 lines
3.4 KiB
C
/*
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* SBC8641D board specific routines
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*
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* Copyright 2008 Wind River Systems Inc.
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*
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* By Paul Gortmaker (see MAINTAINERS for contact information)
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*
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* Based largely on the 8641 HPCN support by Freescale Semiconductor Inc.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/stddef.h>
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#include <linux/kernel.h>
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#include <linux/pci.h>
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#include <linux/kdev_t.h>
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#include <linux/delay.h>
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#include <linux/seq_file.h>
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#include <linux/of_platform.h>
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#include <asm/system.h>
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#include <asm/time.h>
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#include <asm/machdep.h>
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#include <asm/pci-bridge.h>
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#include <asm/mpc86xx.h>
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#include <asm/prom.h>
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#include <mm/mmu_decl.h>
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#include <asm/udbg.h>
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#include <asm/mpic.h>
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#include <sysdev/fsl_pci.h>
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#include <sysdev/fsl_soc.h>
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#include "mpc86xx.h"
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static void __init
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sbc8641_init_irq(void)
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{
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struct mpic *mpic1;
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struct device_node *np;
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struct resource res;
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/* Determine PIC address. */
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np = of_find_node_by_type(NULL, "open-pic");
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if (np == NULL)
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return;
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of_address_to_resource(np, 0, &res);
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/* Alloc mpic structure and per isu has 16 INT entries. */
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mpic1 = mpic_alloc(np, res.start,
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MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN,
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0, 256, " MPIC ");
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of_node_put(np);
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BUG_ON(mpic1 == NULL);
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mpic_init(mpic1);
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}
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static void __init
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sbc8641_setup_arch(void)
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{
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#ifdef CONFIG_PCI
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struct device_node *np;
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#endif
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if (ppc_md.progress)
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ppc_md.progress("sbc8641_setup_arch()", 0);
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#ifdef CONFIG_PCI
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for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie")
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fsl_add_bridge(np, 0);
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#endif
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printk("SBC8641 board from Wind River\n");
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#ifdef CONFIG_SMP
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mpc86xx_smp_init();
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#endif
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}
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static void
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sbc8641_show_cpuinfo(struct seq_file *m)
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{
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struct device_node *root;
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uint memsize = total_memory;
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const char *model = "";
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uint svid = mfspr(SPRN_SVR);
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seq_printf(m, "Vendor\t\t: Wind River Systems\n");
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root = of_find_node_by_path("/");
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if (root)
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model = of_get_property(root, "model", NULL);
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seq_printf(m, "Machine\t\t: %s\n", model);
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of_node_put(root);
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seq_printf(m, "SVR\t\t: 0x%x\n", svid);
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seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024));
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}
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/*
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* Called very early, device-tree isn't unflattened
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*/
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static int __init sbc8641_probe(void)
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{
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unsigned long root = of_get_flat_dt_root();
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if (of_flat_dt_is_compatible(root, "wind,sbc8641"))
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return 1; /* Looks good */
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return 0;
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}
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static long __init
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mpc86xx_time_init(void)
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{
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unsigned int temp;
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/* Set the time base to zero */
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mtspr(SPRN_TBWL, 0);
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mtspr(SPRN_TBWU, 0);
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temp = mfspr(SPRN_HID0);
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temp |= HID0_TBEN;
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mtspr(SPRN_HID0, temp);
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asm volatile("isync");
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return 0;
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}
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static __initdata struct of_device_id of_bus_ids[] = {
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{ .compatible = "simple-bus", },
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{},
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};
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static int __init declare_of_platform_devices(void)
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{
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of_platform_bus_probe(NULL, of_bus_ids, NULL);
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return 0;
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}
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machine_device_initcall(sbc8641, declare_of_platform_devices);
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define_machine(sbc8641) {
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.name = "SBC8641D",
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.probe = sbc8641_probe,
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.setup_arch = sbc8641_setup_arch,
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.init_IRQ = sbc8641_init_irq,
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.show_cpuinfo = sbc8641_show_cpuinfo,
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.get_irq = mpic_get_irq,
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.restart = fsl_rstcr_restart,
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.time_init = mpc86xx_time_init,
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.calibrate_decr = generic_calibrate_decr,
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.progress = udbg_progress,
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#ifdef CONFIG_PCI
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.pcibios_fixup_bus = fsl_pcibios_fixup_bus,
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#endif
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};
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