![Fabian Frederick](/assets/img/avatar_default.png)
There was only one use of __initdata_refok and __exit_refok
__init_refok was used 46 times against 82 for __ref.
Those definitions are obsolete since commit 312b1485fb
("Introduce new
section reference annotations tags: __ref, __refdata, __refconst")
This patch removes the following compatibility definitions and replaces
them treewide.
/* compatibility defines */
#define __init_refok __ref
#define __initdata_refok __refdata
#define __exit_refok __ref
I can also provide separate patches if necessary.
(One patch per tree and check in 1 month or 2 to remove old definitions)
[akpm@linux-foundation.org: coding-style fixes]
Link: http://lkml.kernel.org/r/1466796271-3043-1-git-send-email-fabf@skynet.be
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
637 lines
14 KiB
C
637 lines
14 KiB
C
/*
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* Powermac setup and early boot code plus other random bits.
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*
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* PowerPC version
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* Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
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*
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* Adapted for Power Macintosh by Paul Mackerras
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* Copyright (C) 1996 Paul Mackerras (paulus@samba.org)
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*
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* Derived from "arch/alpha/kernel/setup.c"
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* Copyright (C) 1995 Linus Torvalds
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*
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* Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org)
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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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*/
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/*
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* bootup setup stuff..
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*/
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#include <linux/init.h>
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#include <linux/errno.h>
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#include <linux/sched.h>
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#include <linux/kernel.h>
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#include <linux/mm.h>
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#include <linux/stddef.h>
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#include <linux/unistd.h>
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#include <linux/ptrace.h>
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#include <linux/export.h>
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#include <linux/user.h>
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#include <linux/tty.h>
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#include <linux/string.h>
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#include <linux/delay.h>
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#include <linux/ioport.h>
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#include <linux/major.h>
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#include <linux/initrd.h>
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#include <linux/vt_kern.h>
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#include <linux/console.h>
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#include <linux/pci.h>
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#include <linux/adb.h>
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#include <linux/cuda.h>
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#include <linux/pmu.h>
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#include <linux/irq.h>
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/bitops.h>
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#include <linux/suspend.h>
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#include <linux/of_device.h>
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#include <linux/of_platform.h>
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#include <asm/reg.h>
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#include <asm/sections.h>
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#include <asm/prom.h>
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#include <asm/pgtable.h>
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#include <asm/io.h>
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#include <asm/pci-bridge.h>
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#include <asm/ohare.h>
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#include <asm/mediabay.h>
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#include <asm/machdep.h>
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#include <asm/dma.h>
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#include <asm/cputable.h>
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#include <asm/btext.h>
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#include <asm/pmac_feature.h>
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#include <asm/time.h>
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#include <asm/mmu_context.h>
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#include <asm/iommu.h>
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#include <asm/smu.h>
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#include <asm/pmc.h>
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#include <asm/udbg.h>
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#include "pmac.h"
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#undef SHOW_GATWICK_IRQS
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int ppc_override_l2cr = 0;
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int ppc_override_l2cr_value;
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int has_l2cache = 0;
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int pmac_newworld;
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static int current_root_goodness = -1;
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extern struct machdep_calls pmac_md;
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#define DEFAULT_ROOT_DEVICE Root_SDA1 /* sda1 - slightly silly choice */
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#ifdef CONFIG_PPC64
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int sccdbg;
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#endif
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sys_ctrler_t sys_ctrler = SYS_CTRLER_UNKNOWN;
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EXPORT_SYMBOL(sys_ctrler);
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static void pmac_show_cpuinfo(struct seq_file *m)
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{
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struct device_node *np;
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const char *pp;
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int plen;
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int mbmodel;
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unsigned int mbflags;
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char* mbname;
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mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
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PMAC_MB_INFO_MODEL, 0);
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mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
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PMAC_MB_INFO_FLAGS, 0);
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if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
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(long) &mbname) != 0)
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mbname = "Unknown";
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/* find motherboard type */
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seq_printf(m, "machine\t\t: ");
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np = of_find_node_by_path("/");
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if (np != NULL) {
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pp = of_get_property(np, "model", NULL);
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if (pp != NULL)
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seq_printf(m, "%s\n", pp);
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else
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seq_printf(m, "PowerMac\n");
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pp = of_get_property(np, "compatible", &plen);
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if (pp != NULL) {
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seq_printf(m, "motherboard\t:");
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while (plen > 0) {
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int l = strlen(pp) + 1;
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seq_printf(m, " %s", pp);
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plen -= l;
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pp += l;
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}
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seq_printf(m, "\n");
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}
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of_node_put(np);
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} else
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seq_printf(m, "PowerMac\n");
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/* print parsed model */
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seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
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seq_printf(m, "pmac flags\t: %08x\n", mbflags);
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/* find l2 cache info */
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np = of_find_node_by_name(NULL, "l2-cache");
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if (np == NULL)
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np = of_find_node_by_type(NULL, "cache");
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if (np != NULL) {
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const unsigned int *ic =
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of_get_property(np, "i-cache-size", NULL);
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const unsigned int *dc =
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of_get_property(np, "d-cache-size", NULL);
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seq_printf(m, "L2 cache\t:");
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has_l2cache = 1;
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if (of_get_property(np, "cache-unified", NULL) != 0 && dc) {
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seq_printf(m, " %dK unified", *dc / 1024);
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} else {
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if (ic)
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seq_printf(m, " %dK instruction", *ic / 1024);
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if (dc)
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seq_printf(m, "%s %dK data",
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(ic? " +": ""), *dc / 1024);
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}
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pp = of_get_property(np, "ram-type", NULL);
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if (pp)
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seq_printf(m, " %s", pp);
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seq_printf(m, "\n");
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of_node_put(np);
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}
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/* Indicate newworld/oldworld */
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seq_printf(m, "pmac-generation\t: %s\n",
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pmac_newworld ? "NewWorld" : "OldWorld");
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}
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#ifndef CONFIG_ADB_CUDA
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int find_via_cuda(void)
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{
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struct device_node *dn = of_find_node_by_name(NULL, "via-cuda");
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if (!dn)
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return 0;
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of_node_put(dn);
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printk("WARNING ! Your machine is CUDA-based but your kernel\n");
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printk(" wasn't compiled with CONFIG_ADB_CUDA option !\n");
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return 0;
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}
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#endif
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#ifndef CONFIG_ADB_PMU
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int find_via_pmu(void)
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{
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struct device_node *dn = of_find_node_by_name(NULL, "via-pmu");
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if (!dn)
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return 0;
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of_node_put(dn);
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printk("WARNING ! Your machine is PMU-based but your kernel\n");
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printk(" wasn't compiled with CONFIG_ADB_PMU option !\n");
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return 0;
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}
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#endif
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#ifndef CONFIG_PMAC_SMU
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int smu_init(void)
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{
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/* should check and warn if SMU is present */
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return 0;
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}
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#endif
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#ifdef CONFIG_PPC32
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static volatile u32 *sysctrl_regs;
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static void __init ohare_init(void)
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{
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struct device_node *dn;
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/* this area has the CPU identification register
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and some registers used by smp boards */
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sysctrl_regs = (volatile u32 *) ioremap(0xf8000000, 0x1000);
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/*
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* Turn on the L2 cache.
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* We assume that we have a PSX memory controller iff
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* we have an ohare I/O controller.
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*/
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dn = of_find_node_by_name(NULL, "ohare");
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if (dn) {
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of_node_put(dn);
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if (((sysctrl_regs[2] >> 24) & 0xf) >= 3) {
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if (sysctrl_regs[4] & 0x10)
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sysctrl_regs[4] |= 0x04000020;
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else
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sysctrl_regs[4] |= 0x04000000;
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if(has_l2cache)
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printk(KERN_INFO "Level 2 cache enabled\n");
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}
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}
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}
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static void __init l2cr_init(void)
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{
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/* Checks "l2cr-value" property in the registry */
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if (cpu_has_feature(CPU_FTR_L2CR)) {
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struct device_node *np = of_find_node_by_name(NULL, "cpus");
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if (np == 0)
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np = of_find_node_by_type(NULL, "cpu");
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if (np != 0) {
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const unsigned int *l2cr =
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of_get_property(np, "l2cr-value", NULL);
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if (l2cr != 0) {
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ppc_override_l2cr = 1;
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ppc_override_l2cr_value = *l2cr;
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_set_L2CR(0);
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_set_L2CR(ppc_override_l2cr_value);
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}
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of_node_put(np);
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}
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}
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if (ppc_override_l2cr)
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printk(KERN_INFO "L2CR overridden (0x%x), "
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"backside cache is %s\n",
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ppc_override_l2cr_value,
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(ppc_override_l2cr_value & 0x80000000)
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? "enabled" : "disabled");
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}
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#endif
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static void __init pmac_setup_arch(void)
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{
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struct device_node *cpu, *ic;
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const int *fp;
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unsigned long pvr;
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pvr = PVR_VER(mfspr(SPRN_PVR));
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/* Set loops_per_jiffy to a half-way reasonable value,
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for use until calibrate_delay gets called. */
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loops_per_jiffy = 50000000 / HZ;
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cpu = of_find_node_by_type(NULL, "cpu");
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if (cpu != NULL) {
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fp = of_get_property(cpu, "clock-frequency", NULL);
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if (fp != NULL) {
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if (pvr >= 0x30 && pvr < 0x80)
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/* PPC970 etc. */
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loops_per_jiffy = *fp / (3 * HZ);
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else if (pvr == 4 || pvr >= 8)
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/* 604, G3, G4 etc. */
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loops_per_jiffy = *fp / HZ;
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else
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/* 601, 603, etc. */
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loops_per_jiffy = *fp / (2 * HZ);
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}
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of_node_put(cpu);
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}
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/* See if newworld or oldworld */
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ic = of_find_node_with_property(NULL, "interrupt-controller");
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if (ic) {
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pmac_newworld = 1;
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of_node_put(ic);
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}
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/* Lookup PCI hosts */
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pmac_pci_init();
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#ifdef CONFIG_PPC32
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ohare_init();
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l2cr_init();
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#endif /* CONFIG_PPC32 */
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find_via_cuda();
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find_via_pmu();
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smu_init();
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#if defined(CONFIG_NVRAM) || defined(CONFIG_NVRAM_MODULE) || \
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defined(CONFIG_PPC64)
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pmac_nvram_init();
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#endif
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#ifdef CONFIG_PPC32
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#ifdef CONFIG_BLK_DEV_INITRD
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if (initrd_start)
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ROOT_DEV = Root_RAM0;
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else
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#endif
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ROOT_DEV = DEFAULT_ROOT_DEVICE;
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#endif
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#ifdef CONFIG_ADB
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if (strstr(boot_command_line, "adb_sync")) {
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extern int __adb_probe_sync;
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__adb_probe_sync = 1;
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}
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#endif /* CONFIG_ADB */
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}
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#ifdef CONFIG_SCSI
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void note_scsi_host(struct device_node *node, void *host)
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{
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}
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EXPORT_SYMBOL(note_scsi_host);
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#endif
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static int initializing = 1;
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static int pmac_late_init(void)
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{
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initializing = 0;
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return 0;
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}
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machine_late_initcall(powermac, pmac_late_init);
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/*
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* This is __ref because we check for "initializing" before
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* touching any of the __init sensitive things and "initializing"
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* will be false after __init time. This can't be __init because it
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* can be called whenever a disk is first accessed.
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*/
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void __ref note_bootable_part(dev_t dev, int part, int goodness)
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{
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char *p;
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if (!initializing)
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return;
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if ((goodness <= current_root_goodness) &&
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ROOT_DEV != DEFAULT_ROOT_DEVICE)
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return;
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p = strstr(boot_command_line, "root=");
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if (p != NULL && (p == boot_command_line || p[-1] == ' '))
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return;
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ROOT_DEV = dev + part;
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current_root_goodness = goodness;
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}
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#ifdef CONFIG_ADB_CUDA
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static void __noreturn cuda_restart(void)
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{
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struct adb_request req;
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cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_RESET_SYSTEM);
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for (;;)
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cuda_poll();
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}
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static void __noreturn cuda_shutdown(void)
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{
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struct adb_request req;
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cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_POWERDOWN);
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for (;;)
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cuda_poll();
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}
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#else
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#define cuda_restart()
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#define cuda_shutdown()
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#endif
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#ifndef CONFIG_ADB_PMU
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#define pmu_restart()
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#define pmu_shutdown()
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#endif
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#ifndef CONFIG_PMAC_SMU
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#define smu_restart()
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#define smu_shutdown()
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#endif
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static void __noreturn pmac_restart(char *cmd)
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{
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switch (sys_ctrler) {
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case SYS_CTRLER_CUDA:
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cuda_restart();
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break;
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case SYS_CTRLER_PMU:
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pmu_restart();
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break;
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case SYS_CTRLER_SMU:
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smu_restart();
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break;
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default: ;
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}
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while (1) ;
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}
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static void __noreturn pmac_power_off(void)
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{
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switch (sys_ctrler) {
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case SYS_CTRLER_CUDA:
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cuda_shutdown();
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break;
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case SYS_CTRLER_PMU:
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pmu_shutdown();
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break;
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case SYS_CTRLER_SMU:
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smu_shutdown();
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break;
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default: ;
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}
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while (1) ;
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}
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static void __noreturn
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pmac_halt(void)
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{
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pmac_power_off();
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}
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/*
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* Early initialization.
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*/
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static void __init pmac_init(void)
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{
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/* Enable early btext debug if requested */
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if (strstr(boot_command_line, "btextdbg")) {
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udbg_adb_init_early();
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register_early_udbg_console();
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}
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/* Probe motherboard chipset */
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pmac_feature_init();
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/* Initialize debug stuff */
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udbg_scc_init(!!strstr(boot_command_line, "sccdbg"));
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udbg_adb_init(!!strstr(boot_command_line, "btextdbg"));
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#ifdef CONFIG_PPC64
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iommu_init_early_dart(&pmac_pci_controller_ops);
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#endif
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/* SMP Init has to be done early as we need to patch up
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* cpu_possible_mask before interrupt stacks are allocated
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* or kaboom...
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*/
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#ifdef CONFIG_SMP
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pmac_setup_smp();
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#endif
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}
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static int __init pmac_declare_of_platform_devices(void)
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{
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struct device_node *np;
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np = of_find_node_by_name(NULL, "valkyrie");
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if (np) {
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of_platform_device_create(np, "valkyrie", NULL);
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of_node_put(np);
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}
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np = of_find_node_by_name(NULL, "platinum");
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if (np) {
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of_platform_device_create(np, "platinum", NULL);
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of_node_put(np);
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}
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np = of_find_node_by_type(NULL, "smu");
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if (np) {
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of_platform_device_create(np, "smu", NULL);
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of_node_put(np);
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}
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np = of_find_node_by_type(NULL, "fcu");
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if (np == NULL) {
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/* Some machines have strangely broken device-tree */
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np = of_find_node_by_path("/u3@0,f8000000/i2c@f8001000/fan@15e");
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|
}
|
|
if (np) {
|
|
of_platform_device_create(np, "temperature", NULL);
|
|
of_node_put(np);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
machine_device_initcall(powermac, pmac_declare_of_platform_devices);
|
|
|
|
#ifdef CONFIG_SERIAL_PMACZILOG_CONSOLE
|
|
/*
|
|
* This is called very early, as part of console_init() (typically just after
|
|
* time_init()). This function is respondible for trying to find a good
|
|
* default console on serial ports. It tries to match the open firmware
|
|
* default output with one of the available serial console drivers.
|
|
*/
|
|
static int __init check_pmac_serial_console(void)
|
|
{
|
|
struct device_node *prom_stdout = NULL;
|
|
int offset = 0;
|
|
const char *name;
|
|
#ifdef CONFIG_SERIAL_PMACZILOG_TTYS
|
|
char *devname = "ttyS";
|
|
#else
|
|
char *devname = "ttyPZ";
|
|
#endif
|
|
|
|
pr_debug(" -> check_pmac_serial_console()\n");
|
|
|
|
/* The user has requested a console so this is already set up. */
|
|
if (strstr(boot_command_line, "console=")) {
|
|
pr_debug(" console was specified !\n");
|
|
return -EBUSY;
|
|
}
|
|
|
|
if (!of_chosen) {
|
|
pr_debug(" of_chosen is NULL !\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
/* We are getting a weird phandle from OF ... */
|
|
/* ... So use the full path instead */
|
|
name = of_get_property(of_chosen, "linux,stdout-path", NULL);
|
|
if (name == NULL) {
|
|
pr_debug(" no linux,stdout-path !\n");
|
|
return -ENODEV;
|
|
}
|
|
prom_stdout = of_find_node_by_path(name);
|
|
if (!prom_stdout) {
|
|
pr_debug(" can't find stdout package %s !\n", name);
|
|
return -ENODEV;
|
|
}
|
|
pr_debug("stdout is %s\n", prom_stdout->full_name);
|
|
|
|
name = of_get_property(prom_stdout, "name", NULL);
|
|
if (!name) {
|
|
pr_debug(" stdout package has no name !\n");
|
|
goto not_found;
|
|
}
|
|
|
|
if (strcmp(name, "ch-a") == 0)
|
|
offset = 0;
|
|
else if (strcmp(name, "ch-b") == 0)
|
|
offset = 1;
|
|
else
|
|
goto not_found;
|
|
of_node_put(prom_stdout);
|
|
|
|
pr_debug("Found serial console at %s%d\n", devname, offset);
|
|
|
|
return add_preferred_console(devname, offset, NULL);
|
|
|
|
not_found:
|
|
pr_debug("No preferred console found !\n");
|
|
of_node_put(prom_stdout);
|
|
return -ENODEV;
|
|
}
|
|
console_initcall(check_pmac_serial_console);
|
|
|
|
#endif /* CONFIG_SERIAL_PMACZILOG_CONSOLE */
|
|
|
|
/*
|
|
* Called very early, MMU is off, device-tree isn't unflattened
|
|
*/
|
|
static int __init pmac_probe(void)
|
|
{
|
|
if (!of_machine_is_compatible("Power Macintosh") &&
|
|
!of_machine_is_compatible("MacRISC"))
|
|
return 0;
|
|
|
|
#ifdef CONFIG_PPC32
|
|
/* isa_io_base gets set in pmac_pci_init */
|
|
ISA_DMA_THRESHOLD = ~0L;
|
|
DMA_MODE_READ = 1;
|
|
DMA_MODE_WRITE = 2;
|
|
#endif /* CONFIG_PPC32 */
|
|
|
|
pm_power_off = pmac_power_off;
|
|
|
|
pmac_init();
|
|
|
|
return 1;
|
|
}
|
|
|
|
define_machine(powermac) {
|
|
.name = "PowerMac",
|
|
.probe = pmac_probe,
|
|
.setup_arch = pmac_setup_arch,
|
|
.show_cpuinfo = pmac_show_cpuinfo,
|
|
.init_IRQ = pmac_pic_init,
|
|
.get_irq = NULL, /* changed later */
|
|
.pci_irq_fixup = pmac_pci_irq_fixup,
|
|
.restart = pmac_restart,
|
|
.halt = pmac_halt,
|
|
.time_init = pmac_time_init,
|
|
.get_boot_time = pmac_get_boot_time,
|
|
.set_rtc_time = pmac_set_rtc_time,
|
|
.get_rtc_time = pmac_get_rtc_time,
|
|
.calibrate_decr = pmac_calibrate_decr,
|
|
.feature_call = pmac_do_feature_call,
|
|
.progress = udbg_progress,
|
|
#ifdef CONFIG_PPC64
|
|
.power_save = power4_idle,
|
|
.enable_pmcs = power4_enable_pmcs,
|
|
#endif /* CONFIG_PPC64 */
|
|
#ifdef CONFIG_PPC32
|
|
.pcibios_after_init = pmac_pcibios_after_init,
|
|
.phys_mem_access_prot = pci_phys_mem_access_prot,
|
|
#endif
|
|
};
|