2005-10-26 05:53:19 -06:00
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#ifndef _ASM_POWERPC_MACHDEP_H
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#define _ASM_POWERPC_MACHDEP_H
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2005-10-19 07:11:21 -06:00
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#ifdef __KERNEL__
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2005-04-16 16:20:36 -06:00
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/seq_file.h>
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#include <linux/init.h>
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#include <linux/dma-mapping.h>
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#include <asm/setup.h>
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2005-10-19 07:11:21 -06:00
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/* We export this macro for external modules like Alsa to know if
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* ppc_md.feature_call is implemented or not
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*/
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#define CONFIG_PPC_HAS_FEATURE_CALLS
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2005-04-16 16:20:36 -06:00
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struct pt_regs;
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struct pci_bus;
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struct device_node;
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struct iommu_table;
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struct rtc_time;
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struct file;
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[PATCH] powerpc: Merge kexec
This patch merges, to some extent, the PPC32 and PPC64 kexec implementations.
We adopt the PPC32 approach of having ppc_md callbacks for the kexec functions.
The current PPC64 implementation becomes the "default" implementation for PPC64
which platforms can select if they need no special treatment.
I've added these default callbacks to pseries/maple/cell/powermac, this means
iSeries no longer supports kexec - but it never worked anyway.
I've renamed PPC32's machine_kexec_simple to default_machine_kexec, inline with
PPC64. Judging by the comments it might be better named machine_kexec_non_of,
or something, but at the moment it's the only implementation for PPC32 so it's
the "default".
Kexec requires machine_shutdown(), which is in machine_kexec.c on PPC32, but we
already have in setup-common.c on powerpc. All this does is call
ppc_md.nvram_sync, which only powermac implements, so instead make
machine_shutdown a ppc_md member and have it call core99_nvram_sync directly
on powermac.
I've also stuck relocate_kernel.S into misc_32.S for powerpc.
Built for ARCH=ppc, and 32 & 64 bit ARCH=powerpc, with KEXEC=y/n. Booted on
P5 LPAR and successfully kexec'ed.
Should apply on top of 493f25ef4087395891c99fcfe2c72e62e293e89f.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 05:35:00 -07:00
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#ifdef CONFIG_KEXEC
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struct kimage;
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#endif
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2005-04-16 16:20:36 -06:00
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#ifdef CONFIG_SMP
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struct smp_ops_t {
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void (*message_pass)(int target, int msg);
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int (*probe)(void);
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void (*kick_cpu)(int nr);
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void (*setup_cpu)(int nr);
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void (*take_timebase)(void);
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void (*give_timebase)(void);
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int (*cpu_enable)(unsigned int nr);
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int (*cpu_disable)(void);
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void (*cpu_die)(unsigned int nr);
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int (*cpu_bootable)(unsigned int nr);
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};
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#endif
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struct machdep_calls {
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2006-03-28 05:15:54 -07:00
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char *name;
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2005-10-19 07:11:21 -06:00
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#ifdef CONFIG_PPC64
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2005-04-16 16:20:36 -06:00
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void (*hpte_invalidate)(unsigned long slot,
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unsigned long va,
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2005-11-06 17:06:55 -07:00
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int psize,
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2005-04-16 16:20:36 -06:00
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int local);
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long (*hpte_updatepp)(unsigned long slot,
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unsigned long newpp,
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unsigned long va,
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2005-11-06 17:06:55 -07:00
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int pize,
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2005-04-16 16:20:36 -06:00
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int local);
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void (*hpte_updateboltedpp)(unsigned long newpp,
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2005-11-06 17:06:55 -07:00
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unsigned long ea,
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int psize);
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2005-04-16 16:20:36 -06:00
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long (*hpte_insert)(unsigned long hpte_group,
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unsigned long va,
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unsigned long prpn,
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2005-11-06 17:06:55 -07:00
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unsigned long rflags,
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2005-07-13 02:11:42 -06:00
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unsigned long vflags,
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2005-11-06 17:06:55 -07:00
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int psize);
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2005-04-16 16:20:36 -06:00
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long (*hpte_remove)(unsigned long hpte_group);
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2005-09-19 21:52:50 -06:00
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void (*flush_hash_range)(unsigned long number, int local);
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2005-04-16 16:20:36 -06:00
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/* special for kexec, to be called in real mode, linar mapping is
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* destroyed as well */
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void (*hpte_clear_all)(void);
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void (*tce_build)(struct iommu_table * tbl,
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long index,
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long npages,
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unsigned long uaddr,
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enum dma_data_direction direction);
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void (*tce_free)(struct iommu_table *tbl,
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long index,
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long npages);
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void (*tce_flush)(struct iommu_table *tbl);
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void (*iommu_dev_setup)(struct pci_dev *dev);
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void (*iommu_bus_setup)(struct pci_bus *bus);
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2005-06-23 01:09:54 -06:00
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void (*irq_bus_setup)(struct pci_bus *bus);
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2006-03-28 05:15:54 -07:00
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#endif /* CONFIG_PPC64 */
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2005-04-16 16:20:36 -06:00
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2006-03-28 05:15:54 -07:00
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int (*probe)(void);
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2005-04-16 16:20:36 -06:00
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void (*setup_arch)(void);
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void (*init_early)(void);
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/* Optional, may be NULL. */
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2005-10-20 01:02:01 -06:00
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void (*show_cpuinfo)(struct seq_file *m);
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void (*show_percpuinfo)(struct seq_file *m, int i);
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2005-04-16 16:20:36 -06:00
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void (*init_IRQ)(void);
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int (*get_irq)(struct pt_regs *);
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2005-11-11 06:06:05 -07:00
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#ifdef CONFIG_KEXEC
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void (*kexec_cpu_down)(int crash_shutdown, int secondary);
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#endif
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2005-04-16 16:20:36 -06:00
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/* PCI stuff */
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2005-10-19 07:11:21 -06:00
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/* Called after scanning the bus, before allocating resources */
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2005-04-16 16:20:36 -06:00
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void (*pcibios_fixup)(void);
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ppc64: Set up PCI tree from Open Firmware device tree
This adds code which gives us the option on ppc64 of instantiating the
PCI tree (the tree of pci_bus and pci_dev structs) from the Open
Firmware device tree rather than by probing PCI configuration space.
The OF device tree has a node for each PCI device and bridge in the
system, with properties that tell us what addresses the firmware has
configured for them and other details.
There are a couple of reasons why this is needed. First, on systems
with a hypervisor, there is a PCI-PCI bridge per slot under the PCI
host bridges. These PCI-PCI bridges have special isolation features
for virtualization. We can't write to their config space, and we are
not supposed to be reading their config space either. The firmware
tells us about the address ranges that they pass in the OF device
tree.
Secondly, on powermacs, the interrupt controller is in a PCI device
that may be behind a PCI-PCI bridge. If we happened to take an
interrupt just at the point when the device or a bridge on the path to
it was disabled for probing, we would crash when we try to access the
interrupt controller.
I have implemented a platform-specific function which is called for
each PCI bridge (host or PCI-PCI) to say whether the code should look
in the device tree or use normal PCI probing for the devices under
that bridge. On pSeries machines we use the device tree if we're
running under a hypervisor, otherwise we use normal probing. On
powermacs we use normal probing for the AGP bridge, since the device
for the AGP bridge itself isn't shown in the device tree (at least on
my G5), and the device tree for everything else.
This has been tested on a dual G5 powermac, a partition on a POWER5
machine (running under the hypervisor), and a legacy iSeries
partition.
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-09-12 01:17:36 -06:00
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int (*pci_probe_mode)(struct pci_bus *);
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2005-04-16 16:20:36 -06:00
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void (*restart)(char *cmd);
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void (*power_off)(void);
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void (*halt)(void);
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void (*panic)(char *str);
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void (*cpu_die)(void);
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2005-10-19 07:11:21 -06:00
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long (*time_init)(void); /* Optional, may be NULL */
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2005-04-16 16:20:36 -06:00
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int (*set_rtc_time)(struct rtc_time *);
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void (*get_rtc_time)(struct rtc_time *);
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2005-10-19 07:11:21 -06:00
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unsigned long (*get_boot_time)(void);
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unsigned char (*rtc_read_val)(int addr);
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void (*rtc_write_val)(int addr, unsigned char val);
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2005-04-16 16:20:36 -06:00
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void (*calibrate_decr)(void);
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void (*progress)(char *, unsigned short);
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/* Interface for platform error logging */
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void (*log_error)(char *buf, unsigned int err_type, int fatal);
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2005-10-22 00:02:39 -06:00
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unsigned char (*nvram_read_val)(int addr);
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void (*nvram_write_val)(int addr, unsigned char val);
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2005-04-16 16:20:36 -06:00
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ssize_t (*nvram_write)(char *buf, size_t count, loff_t *index);
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ssize_t (*nvram_read)(char *buf, size_t count, loff_t *index);
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ssize_t (*nvram_size)(void);
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2005-10-19 07:11:21 -06:00
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void (*nvram_sync)(void);
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2005-04-16 16:20:36 -06:00
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/* Exception handlers */
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2006-01-04 12:55:53 -07:00
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int (*system_reset_exception)(struct pt_regs *regs);
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2005-04-16 16:20:36 -06:00
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int (*machine_check_exception)(struct pt_regs *regs);
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/* Motherboard/chipset features. This is a kind of general purpose
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* hook used to control some machine specific features (like reset
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* lines, chip power control, etc...).
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*/
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long (*feature_call)(unsigned int feature, ...);
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/* Check availability of legacy devices like i8042 */
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int (*check_legacy_ioport)(unsigned int baseport);
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/* Get legacy PCI/IDE interrupt mapping */
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int (*pci_get_legacy_ide_irq)(struct pci_dev *dev, int channel);
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/* Get access protection for /dev/mem */
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pgprot_t (*phys_mem_access_prot)(struct file *file,
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2005-10-28 18:46:18 -06:00
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unsigned long pfn,
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2005-04-16 16:20:36 -06:00
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unsigned long size,
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pgprot_t vma_prot);
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2005-07-07 18:56:28 -06:00
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/* Idle loop for this platform, leave empty for default idle loop */
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2005-10-19 07:11:21 -06:00
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void (*idle_loop)(void);
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2005-08-08 19:13:36 -06:00
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2006-03-26 21:03:03 -07:00
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/*
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* Function for waiting for work with reduced power in idle loop;
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* called with interrupts disabled.
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*/
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void (*power_save)(void);
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2005-10-19 07:11:21 -06:00
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/* Function to enable performance monitor counters for this
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platform, called once per cpu. */
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2005-08-08 19:13:36 -06:00
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void (*enable_pmcs)(void);
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2005-10-19 07:11:21 -06:00
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2005-11-06 19:12:03 -07:00
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/* Set DABR for this platform, leave empty for default implemenation */
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int (*set_dabr)(unsigned long dabr);
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2005-10-19 07:11:21 -06:00
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#ifdef CONFIG_PPC32 /* XXX for now */
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/* A general init function, called by ppc_init in init/main.c.
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May be NULL. */
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void (*init)(void);
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void (*setup_io_mappings)(void);
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void (*early_serial_map)(void);
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void (*kgdb_map_scc)(void);
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/*
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* optional PCI "hooks"
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*/
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/* Called after PPC generic resource fixup to perform
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machine specific fixups */
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void (*pcibios_fixup_resources)(struct pci_dev *);
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/* Called for each PCI bus in the system when it's probed */
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void (*pcibios_fixup_bus)(struct pci_bus *);
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/* Called when pci_enable_device() is called (initial=0) or
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* when a device with no assigned resource is found (initial=1).
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* Returns 0 to allow assignment/enabling of the device. */
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int (*pcibios_enable_device_hook)(struct pci_dev *, int initial);
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/* For interrupt routing */
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unsigned char (*pci_swizzle)(struct pci_dev *, unsigned char *);
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int (*pci_map_irq)(struct pci_dev *, unsigned char, unsigned char);
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/* Called in indirect_* to avoid touching devices */
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int (*pci_exclude_device)(unsigned char, unsigned char);
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/* Called at then very end of pcibios_init() */
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void (*pcibios_after_init)(void);
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[PATCH] powerpc: Merge kexec
This patch merges, to some extent, the PPC32 and PPC64 kexec implementations.
We adopt the PPC32 approach of having ppc_md callbacks for the kexec functions.
The current PPC64 implementation becomes the "default" implementation for PPC64
which platforms can select if they need no special treatment.
I've added these default callbacks to pseries/maple/cell/powermac, this means
iSeries no longer supports kexec - but it never worked anyway.
I've renamed PPC32's machine_kexec_simple to default_machine_kexec, inline with
PPC64. Judging by the comments it might be better named machine_kexec_non_of,
or something, but at the moment it's the only implementation for PPC32 so it's
the "default".
Kexec requires machine_shutdown(), which is in machine_kexec.c on PPC32, but we
already have in setup-common.c on powerpc. All this does is call
ppc_md.nvram_sync, which only powermac implements, so instead make
machine_shutdown a ppc_md member and have it call core99_nvram_sync directly
on powermac.
I've also stuck relocate_kernel.S into misc_32.S for powerpc.
Built for ARCH=ppc, and 32 & 64 bit ARCH=powerpc, with KEXEC=y/n. Booted on
P5 LPAR and successfully kexec'ed.
Should apply on top of 493f25ef4087395891c99fcfe2c72e62e293e89f.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 05:35:00 -07:00
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#endif /* CONFIG_PPC32 */
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2005-10-19 07:11:21 -06:00
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/* Called to shutdown machine specific hardware not already controlled
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* by other drivers.
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*/
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void (*machine_shutdown)(void);
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[PATCH] powerpc: Merge kexec
This patch merges, to some extent, the PPC32 and PPC64 kexec implementations.
We adopt the PPC32 approach of having ppc_md callbacks for the kexec functions.
The current PPC64 implementation becomes the "default" implementation for PPC64
which platforms can select if they need no special treatment.
I've added these default callbacks to pseries/maple/cell/powermac, this means
iSeries no longer supports kexec - but it never worked anyway.
I've renamed PPC32's machine_kexec_simple to default_machine_kexec, inline with
PPC64. Judging by the comments it might be better named machine_kexec_non_of,
or something, but at the moment it's the only implementation for PPC32 so it's
the "default".
Kexec requires machine_shutdown(), which is in machine_kexec.c on PPC32, but we
already have in setup-common.c on powerpc. All this does is call
ppc_md.nvram_sync, which only powermac implements, so instead make
machine_shutdown a ppc_md member and have it call core99_nvram_sync directly
on powermac.
I've also stuck relocate_kernel.S into misc_32.S for powerpc.
Built for ARCH=ppc, and 32 & 64 bit ARCH=powerpc, with KEXEC=y/n. Booted on
P5 LPAR and successfully kexec'ed.
Should apply on top of 493f25ef4087395891c99fcfe2c72e62e293e89f.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-11-14 05:35:00 -07:00
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#ifdef CONFIG_KEXEC
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2005-10-19 07:11:21 -06:00
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/* Called to do the minimal shutdown needed to run a kexec'd kernel
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* to run successfully.
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* XXX Should we move this one out of kexec scope?
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*/
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2005-12-04 00:39:12 -07:00
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void (*machine_crash_shutdown)(struct pt_regs *regs);
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2005-10-19 07:11:21 -06:00
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/* Called to do what every setup is needed on image and the
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* reboot code buffer. Returns 0 on success.
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* Provide your own (maybe dummy) implementation if your platform
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* claims to support kexec.
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*/
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int (*machine_kexec_prepare)(struct kimage *image);
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/* Called to handle any machine specific cleanup on image */
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void (*machine_kexec_cleanup)(struct kimage *image);
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/* Called to perform the _real_ kexec.
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* Do NOT allocate memory or fail here. We are past the point of
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* no return.
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*/
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void (*machine_kexec)(struct kimage *image);
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#endif /* CONFIG_KEXEC */
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2006-06-07 15:15:10 -06:00
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#ifdef CONFIG_PCI_MSI
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int (*enable_msi)(struct pci_dev *pdev);
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void (*disable_msi)(struct pci_dev *pdev);
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#endif /* CONFIG_PCI_MSI */
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2005-04-16 16:20:36 -06:00
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};
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2006-03-26 21:03:03 -07:00
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extern void power4_idle(void);
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extern void ppc6xx_idle(void);
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2005-07-07 18:56:28 -06:00
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2006-03-28 05:15:54 -07:00
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/*
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* ppc_md contains a copy of the machine description structure for the
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* current platform. machine_id contains the initial address where the
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* description was found during boot.
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*/
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2005-04-16 16:20:36 -06:00
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extern struct machdep_calls ppc_md;
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2006-03-28 05:15:54 -07:00
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extern struct machdep_calls *machine_id;
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#define __machine_desc __attribute__ ((__section__ (".machine.desc")))
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2006-04-22 18:42:04 -06:00
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#define define_machine(name) \
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extern struct machdep_calls mach_##name; \
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EXPORT_SYMBOL(mach_##name); \
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struct machdep_calls mach_##name __machine_desc =
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2006-03-28 05:15:54 -07:00
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#define machine_is(name) \
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({ \
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extern struct machdep_calls mach_##name \
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__attribute__((weak)); \
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machine_id == &mach_##name; \
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})
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extern void probe_machine(void);
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2005-04-16 16:20:36 -06:00
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extern char cmd_line[COMMAND_LINE_SIZE];
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#ifdef CONFIG_PPC_PMAC
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/*
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* Power macintoshes have either a CUDA, PMU or SMU controlling
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* system reset, power, NVRAM, RTC.
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*/
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typedef enum sys_ctrler_kind {
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SYS_CTRLER_UNKNOWN = 0,
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SYS_CTRLER_CUDA = 1,
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SYS_CTRLER_PMU = 2,
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SYS_CTRLER_SMU = 3,
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} sys_ctrler_t;
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extern sys_ctrler_t sys_ctrler;
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#endif /* CONFIG_PPC_PMAC */
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2005-10-19 07:11:21 -06:00
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extern void setup_pci_ptrs(void);
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#ifdef CONFIG_SMP
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/* Poor default implementations */
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extern void __devinit smp_generic_give_timebase(void);
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extern void __devinit smp_generic_take_timebase(void);
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#endif /* CONFIG_SMP */
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2005-04-16 16:20:36 -06:00
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/* Functions to produce codes on the leds.
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* The SRC code should be unique for the message category and should
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* be limited to the lower 24 bits (the upper 8 are set by these funcs),
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* and (for boot & dump) should be sorted numerically in the order
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* the events occur.
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*/
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/* Print a boot progress message. */
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void ppc64_boot_msg(unsigned int src, const char *msg);
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/* Print a termination message (print only -- does not stop the kernel) */
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void ppc64_terminate_msg(unsigned int src, const char *msg);
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static inline void log_error(char *buf, unsigned int err_type, int fatal)
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{
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if (ppc_md.log_error)
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ppc_md.log_error(buf, err_type, fatal);
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}
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#endif /* __KERNEL__ */
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2005-10-26 05:53:19 -06:00
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#endif /* _ASM_POWERPC_MACHDEP_H */
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