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Paul Gortmaker
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Kumar Gala
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Apr 17, 2008
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/* | ||
* SBC8641D board specific routines | ||
* | ||
* Copyright 2008 Wind River Systems Inc. | ||
* | ||
* By Paul Gortmaker (see MAINTAINERS for contact information) | ||
* | ||
* Based largely on the 8641 HPCN support by Freescale Semiconductor Inc. | ||
* | ||
* 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. | ||
*/ | ||
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#include <linux/stddef.h> | ||
#include <linux/kernel.h> | ||
#include <linux/pci.h> | ||
#include <linux/kdev_t.h> | ||
#include <linux/delay.h> | ||
#include <linux/seq_file.h> | ||
#include <linux/of_platform.h> | ||
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#include <asm/system.h> | ||
#include <asm/time.h> | ||
#include <asm/machdep.h> | ||
#include <asm/pci-bridge.h> | ||
#include <asm/mpc86xx.h> | ||
#include <asm/prom.h> | ||
#include <mm/mmu_decl.h> | ||
#include <asm/udbg.h> | ||
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#include <asm/mpic.h> | ||
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#include <sysdev/fsl_pci.h> | ||
#include <sysdev/fsl_soc.h> | ||
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#include "mpc86xx.h" | ||
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static void __init | ||
sbc8641_init_irq(void) | ||
{ | ||
struct mpic *mpic1; | ||
struct device_node *np; | ||
struct resource res; | ||
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/* Determine PIC address. */ | ||
np = of_find_node_by_type(NULL, "open-pic"); | ||
if (np == NULL) | ||
return; | ||
of_address_to_resource(np, 0, &res); | ||
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/* Alloc mpic structure and per isu has 16 INT entries. */ | ||
mpic1 = mpic_alloc(np, res.start, | ||
MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, | ||
0, 256, " MPIC "); | ||
of_node_put(np); | ||
BUG_ON(mpic1 == NULL); | ||
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mpic_init(mpic1); | ||
} | ||
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static void __init | ||
sbc8641_setup_arch(void) | ||
{ | ||
#ifdef CONFIG_PCI | ||
struct device_node *np; | ||
#endif | ||
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if (ppc_md.progress) | ||
ppc_md.progress("sbc8641_setup_arch()", 0); | ||
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#ifdef CONFIG_PCI | ||
for_each_compatible_node(np, "pci", "fsl,mpc8641-pcie") | ||
fsl_add_bridge(np, 0); | ||
#endif | ||
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printk("SBC8641 board from Wind River\n"); | ||
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#ifdef CONFIG_SMP | ||
mpc86xx_smp_init(); | ||
#endif | ||
} | ||
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static void | ||
sbc8641_show_cpuinfo(struct seq_file *m) | ||
{ | ||
struct device_node *root; | ||
uint memsize = total_memory; | ||
const char *model = ""; | ||
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("/"); | ||
if (root) | ||
model = of_get_property(root, "model", NULL); | ||
seq_printf(m, "Machine\t\t: %s\n", model); | ||
of_node_put(root); | ||
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seq_printf(m, "SVR\t\t: 0x%x\n", svid); | ||
seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); | ||
} | ||
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/* | ||
* Called very early, device-tree isn't unflattened | ||
*/ | ||
static int __init sbc8641_probe(void) | ||
{ | ||
unsigned long root = of_get_flat_dt_root(); | ||
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if (of_flat_dt_is_compatible(root, "wind,sbc8641")) | ||
return 1; /* Looks good */ | ||
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return 0; | ||
} | ||
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static long __init | ||
mpc86xx_time_init(void) | ||
{ | ||
unsigned int temp; | ||
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/* Set the time base to zero */ | ||
mtspr(SPRN_TBWL, 0); | ||
mtspr(SPRN_TBWU, 0); | ||
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temp = mfspr(SPRN_HID0); | ||
temp |= HID0_TBEN; | ||
mtspr(SPRN_HID0, temp); | ||
asm volatile("isync"); | ||
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return 0; | ||
} | ||
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static __initdata struct of_device_id of_bus_ids[] = { | ||
{ .compatible = "simple-bus", }, | ||
{}, | ||
}; | ||
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static int __init declare_of_platform_devices(void) | ||
{ | ||
of_platform_bus_probe(NULL, of_bus_ids, NULL); | ||
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return 0; | ||
} | ||
machine_device_initcall(sbc8641, declare_of_platform_devices); | ||
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define_machine(sbc8641) { | ||
.name = "SBC8641D", | ||
.probe = sbc8641_probe, | ||
.setup_arch = sbc8641_setup_arch, | ||
.init_IRQ = sbc8641_init_irq, | ||
.show_cpuinfo = sbc8641_show_cpuinfo, | ||
.get_irq = mpic_get_irq, | ||
.restart = fsl_rstcr_restart, | ||
.time_init = mpc86xx_time_init, | ||
.calibrate_decr = generic_calibrate_decr, | ||
.progress = udbg_progress, | ||
#ifdef CONFIG_PCI | ||
.pcibios_fixup_bus = fsl_pcibios_fixup_bus, | ||
#endif | ||
}; |