Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 511 insertions, 0 deletions

diff --git a/arch/ppc64/kernel/pmac_setup.c b/arch/ppc64/kernel/pmac_setup.c
new file mode 100644
index 000000000000..6cf03d387b91
--- /dev/null
+++ b/arch/ppc64/kernel/pmac_setup.c
@@ -0,0 +1,511 @@
+/*
+ *  arch/ppc/platforms/setup.c
+ *
+ *  PowerPC version
+ *    Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
+ *
+ *  Adapted for Power Macintosh by Paul Mackerras
+ *    Copyright (C) 1996 Paul Mackerras (paulus@cs.anu.edu.au)
+ *
+ *  Derived from "arch/alpha/kernel/setup.c"
+ *    Copyright (C) 1995 Linus Torvalds
+ *
+ *  Maintained by Benjamin Herrenschmidt (benh@kernel.crashing.org)
+ *
+ *  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.
+ *
+ */
+
+/*
+ * bootup setup stuff..
+ */
+
+#undef DEBUG
+
+#include <linux/config.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/stddef.h>
+#include <linux/unistd.h>
+#include <linux/ptrace.h>
+#include <linux/slab.h>
+#include <linux/user.h>
+#include <linux/a.out.h>
+#include <linux/tty.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/ioport.h>
+#include <linux/major.h>
+#include <linux/initrd.h>
+#include <linux/vt_kern.h>
+#include <linux/console.h>
+#include <linux/ide.h>
+#include <linux/pci.h>
+#include <linux/adb.h>
+#include <linux/cuda.h>
+#include <linux/pmu.h>
+#include <linux/irq.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/bitops.h>
+
+#include <asm/processor.h>
+#include <asm/sections.h>
+#include <asm/prom.h>
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/pci-bridge.h>
+#include <asm/iommu.h>
+#include <asm/machdep.h>
+#include <asm/dma.h>
+#include <asm/btext.h>
+#include <asm/cputable.h>
+#include <asm/pmac_feature.h>
+#include <asm/time.h>
+#include <asm/of_device.h>
+#include <asm/lmb.h>
+#include <asm/smu.h>
+
+#include "pmac.h"
+#include "mpic.h"
+
+#ifdef DEBUG
+#define DBG(fmt...) udbg_printf(fmt)
+#else
+#define DBG(fmt...)
+#endif
+
+static int current_root_goodness = -1;
+#define DEFAULT_ROOT_DEVICE Root_SDA1   /* sda1 - slightly silly choice */
+
+extern  int powersave_nap;
+int sccdbg;
+
+sys_ctrler_t sys_ctrler;
+EXPORT_SYMBOL(sys_ctrler);
+
+#ifdef CONFIG_PMAC_SMU
+unsigned long smu_cmdbuf_abs;
+EXPORT_SYMBOL(smu_cmdbuf_abs);
+#endif
+
+extern void udbg_init_scc(struct device_node *np);
+
+void __pmac pmac_show_cpuinfo(struct seq_file *m)
+{
+        struct device_node *np;
+        char *pp;
+        int plen;
+        char* mbname;
+        int mbmodel = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
+                                        PMAC_MB_INFO_MODEL, 0);
+        unsigned int mbflags = pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL,
+                                                 PMAC_MB_INFO_FLAGS, 0);
+
+        if (pmac_call_feature(PMAC_FTR_GET_MB_INFO, NULL, PMAC_MB_INFO_NAME,
+                              (long)&mbname) != 0)
+                mbname = "Unknown";
+        
+        /* find motherboard type */
+        seq_printf(m, "machine\t\t: ");
+        np = find_devices("device-tree");
+        if (np != NULL) {
+                pp = (char *) get_property(np, "model", NULL);
+                if (pp != NULL)
+                        seq_printf(m, "%s\n", pp);
+                else
+                        seq_printf(m, "PowerMac\n");
+                pp = (char *) get_property(np, "compatible", &plen);
+                if (pp != NULL) {
+                        seq_printf(m, "motherboard\t:");
+                        while (plen > 0) {
+                                int l = strlen(pp) + 1;
+                                seq_printf(m, " %s", pp);
+                                plen -= l;
+                                pp += l;
+                        }
+                        seq_printf(m, "\n");
+                }
+        } else
+                seq_printf(m, "PowerMac\n");
+
+        /* print parsed model */
+        seq_printf(m, "detected as\t: %d (%s)\n", mbmodel, mbname);
+        seq_printf(m, "pmac flags\t: %08x\n", mbflags);
+
+        /* Indicate newworld */
+        seq_printf(m, "pmac-generation\t: NewWorld\n");
+}
+
+
+void __init pmac_setup_arch(void)
+{
+        /* init to some ~sane value until calibrate_delay() runs */
+        loops_per_jiffy = 50000000;
+
+        /* Probe motherboard chipset */
+        pmac_feature_init();
+#if 0
+        /* Lock-enable the SCC channel used for debug */
+        if (sccdbg) {
+                np = of_find_node_by_name(NULL, "escc");
+                if (np)
+                        pmac_call_feature(PMAC_FTR_SCC_ENABLE, np,
+                                          PMAC_SCC_ASYNC | PMAC_SCC_FLAG_XMON, 1);
+        }
+#endif
+        /* We can NAP */
+        powersave_nap = 1;
+
+#ifdef CONFIG_ADB_PMU
+        /* Initialize the PMU if any */
+        find_via_pmu();
+#endif
+#ifdef CONFIG_PMAC_SMU
+        /* Initialize the SMU if any */
+        smu_init();
+#endif
+
+        /* Init NVRAM access */
+        pmac_nvram_init();
+
+        /* Setup SMP callback */
+#ifdef CONFIG_SMP
+        pmac_setup_smp();
+#endif
+
+        /* Lookup PCI hosts */
+        pmac_pci_init();
+
+#ifdef CONFIG_DUMMY_CONSOLE
+        conswitchp = &dummy_con;
+#endif
+}
+
+#ifdef CONFIG_SCSI
+void note_scsi_host(struct device_node *node, void *host)
+{
+        /* Obsolete */
+}
+#endif
+
+
+static int initializing = 1;
+
+static int pmac_late_init(void)
+{
+        initializing = 0;
+        return 0;
+}
+
+late_initcall(pmac_late_init);
+
+/* can't be __init - can be called whenever a disk is first accessed */
+void __pmac note_bootable_part(dev_t dev, int part, int goodness)
+{
+        extern dev_t boot_dev;
+        char *p;
+
+        if (!initializing)
+                return;
+        if ((goodness <= current_root_goodness) &&
+            ROOT_DEV != DEFAULT_ROOT_DEVICE)
+                return;
+        p = strstr(saved_command_line, "root=");
+        if (p != NULL && (p == saved_command_line || p[-1] == ' '))
+                return;
+
+        if (!boot_dev || dev == boot_dev) {
+                ROOT_DEV = dev + part;
+                boot_dev = 0;
+                current_root_goodness = goodness;
+        }
+}
+
+void __pmac pmac_restart(char *cmd)
+{
+        switch(sys_ctrler) {
+#ifdef CONFIG_ADB_PMU
+        case SYS_CTRLER_PMU:
+                pmu_restart();
+                break;
+#endif
+
+#ifdef CONFIG_PMAC_SMU
+        case SYS_CTRLER_SMU:
+                smu_restart();
+                break;
+#endif
+        default:
+                ;
+        }
+}
+
+void __pmac pmac_power_off(void)
+{
+        switch(sys_ctrler) {
+#ifdef CONFIG_ADB_PMU
+        case SYS_CTRLER_PMU:
+                pmu_shutdown();
+                break;
+#endif
+#ifdef CONFIG_PMAC_SMU
+        case SYS_CTRLER_SMU:
+                smu_shutdown();
+                break;
+#endif
+        default:
+                ;
+        }
+}
+
+void __pmac pmac_halt(void)
+{
+        pmac_power_off();
+}
+
+#ifdef CONFIG_BOOTX_TEXT
+static int dummy_getc_poll(void)
+{
+        return -1;
+}
+
+static unsigned char dummy_getc(void)
+{
+        return 0;
+}
+
+static void btext_putc(unsigned char c)
+{
+        btext_drawchar(c);
+}
+
+static void __init init_boot_display(void)
+{
+        char *name;
+        struct device_node *np = NULL; 
+        int rc = -ENODEV;
+
+        printk("trying to initialize btext ...\n");
+
+        name = (char *)get_property(of_chosen, "linux,stdout-path", NULL);
+        if (name != NULL) {
+                np = of_find_node_by_path(name);
+                if (np != NULL) {
+                        if (strcmp(np->type, "display") != 0) {
+                                printk("boot stdout isn't a display !\n");
+                                of_node_put(np);
+                                np = NULL;
+                        }
+                }
+        }
+        if (np)
+                rc = btext_initialize(np);
+        if (rc == 0)
+                return;
+
+        for (np = NULL; (np = of_find_node_by_type(np, "display"));) {
+                if (get_property(np, "linux,opened", NULL)) {
+                        printk("trying %s ...\n", np->full_name);
+                        rc = btext_initialize(np);
+                        printk("result: %d\n", rc);
+                }
+                if (rc == 0)
+                        return;
+        }
+}
+#endif /* CONFIG_BOOTX_TEXT */
+
+/* 
+ * Early initialization.
+ */
+void __init pmac_init_early(void)
+{
+        DBG(" -> pmac_init_early\n");
+
+        /* Initialize hash table, from now on, we can take hash faults
+         * and call ioremap
+         */
+        hpte_init_native();
+
+        /* Init SCC */
+        if (strstr(cmd_line, "sccdbg")) {
+                sccdbg = 1;
+                udbg_init_scc(NULL);
+        }
+
+        else {
+#ifdef CONFIG_BOOTX_TEXT
+                init_boot_display();
+
+                ppc_md.udbg_putc = btext_putc;
+                ppc_md.udbg_getc = dummy_getc;
+                ppc_md.udbg_getc_poll = dummy_getc_poll;
+#endif /* CONFIG_BOOTX_TEXT */
+        }
+
+        /* Setup interrupt mapping options */
+        ppc64_interrupt_controller = IC_OPEN_PIC;
+
+        iommu_init_early_u3();
+
+        DBG(" <- pmac_init_early\n");
+}
+
+static int pmac_u3_cascade(struct pt_regs *regs, void *data)
+{
+        return mpic_get_one_irq((struct mpic *)data, regs);
+}
+
+static __init void pmac_init_IRQ(void)
+{
+        struct device_node *irqctrler  = NULL;
+        struct device_node *irqctrler2 = NULL;
+        struct device_node *np = NULL;
+        struct mpic *mpic1, *mpic2;
+
+        /* We first try to detect Apple's new Core99 chipset, since mac-io
+         * is quite different on those machines and contains an IBM MPIC2.
+         */
+        while ((np = of_find_node_by_type(np, "open-pic")) != NULL) {
+                struct device_node *parent = of_get_parent(np);
+                if (parent && !strcmp(parent->name, "u3"))
+                        irqctrler2 = of_node_get(np);
+                else
+                        irqctrler = of_node_get(np);
+                of_node_put(parent);
+        }
+        if (irqctrler != NULL && irqctrler->n_addrs > 0) {
+                unsigned char senses[128];
+
+                printk(KERN_INFO "PowerMac using OpenPIC irq controller at 0x%08x\n",
+                       (unsigned int)irqctrler->addrs[0].address);
+
+                prom_get_irq_senses(senses, 0, 128);
+                mpic1 = mpic_alloc(irqctrler->addrs[0].address,
+                                   MPIC_PRIMARY | MPIC_WANTS_RESET,
+                                   0, 0, 128, 256, senses, 128, " K2-MPIC  ");
+                BUG_ON(mpic1 == NULL);
+                mpic_init(mpic1);               
+
+                if (irqctrler2 != NULL && irqctrler2->n_intrs > 0 &&
+                    irqctrler2->n_addrs > 0) {
+                        printk(KERN_INFO "Slave OpenPIC at 0x%08x hooked on IRQ %d\n",
+                               (u32)irqctrler2->addrs[0].address,
+                               irqctrler2->intrs[0].line);
+
+                        pmac_call_feature(PMAC_FTR_ENABLE_MPIC, irqctrler2, 0, 0);
+                        prom_get_irq_senses(senses, 128, 128 + 128);
+
+                        /* We don't need to set MPIC_BROKEN_U3 here since we don't have
+                         * hypertransport interrupts routed to it
+                         */
+                        mpic2 = mpic_alloc(irqctrler2->addrs[0].address,
+                                           MPIC_BIG_ENDIAN | MPIC_WANTS_RESET,
+                                           0, 128, 128, 0, senses, 128, " U3-MPIC  ");
+                        BUG_ON(mpic2 == NULL);
+                        mpic_init(mpic2);
+                        mpic_setup_cascade(irqctrler2->intrs[0].line,
+                                           pmac_u3_cascade, mpic2);
+                }
+        }
+        of_node_put(irqctrler);
+        of_node_put(irqctrler2);
+}
+
+static void __init pmac_progress(char *s, unsigned short hex)
+{
+        if (sccdbg) {
+                udbg_puts(s);
+                udbg_puts("\n");
+        }
+#ifdef CONFIG_BOOTX_TEXT
+        else if (boot_text_mapped) {
+                btext_drawstring(s);
+                btext_drawstring("\n");
+        }
+#endif /* CONFIG_BOOTX_TEXT */
+}
+
+/*
+ * pmac has no legacy IO, anything calling this function has to
+ * fail or bad things will happen
+ */
+static int pmac_check_legacy_ioport(unsigned int baseport)
+{
+        return -ENODEV;
+}
+
+static int __init pmac_declare_of_platform_devices(void)
+{
+        struct device_node *np;
+
+        np = find_devices("u3");
+        if (np) {
+                for (np = np->child; np != NULL; np = np->sibling)
+                        if (strncmp(np->name, "i2c", 3) == 0) {
+                                of_platform_device_create(np, "u3-i2c");
+                                break;
+                        }
+        }
+
+        return 0;
+}
+
+device_initcall(pmac_declare_of_platform_devices);
+
+/*
+ * Called very early, MMU is off, device-tree isn't unflattened
+ */
+static int __init pmac_probe(int platform)
+{
+        if (platform != PLATFORM_POWERMAC)
+                return 0;
+        /*
+         * On U3, the DART (iommu) must be allocated now since it
+         * has an impact on htab_initialize (due to the large page it
+         * occupies having to be broken up so the DART itself is not
+         * part of the cacheable linar mapping
+         */
+        alloc_u3_dart_table();
+
+#ifdef CONFIG_PMAC_SMU
+        /*
+         * SMU based G5s need some memory below 2Gb, at least the current
+         * driver needs that. We have to allocate it now. We allocate 4k
+         * (1 small page) for now.
+         */
+        smu_cmdbuf_abs = lmb_alloc_base(4096, 4096, 0x80000000UL);
+#endif /* CONFIG_PMAC_SMU */
+
+        return 1;
+}
+
+struct machdep_calls __initdata pmac_md = {
+#ifdef CONFIG_HOTPLUG_CPU
+        .cpu_die                = generic_mach_cpu_die,
+#endif
+        .probe                  = pmac_probe,
+        .setup_arch             = pmac_setup_arch,
+        .init_early             = pmac_init_early,
+        .get_cpuinfo            = pmac_show_cpuinfo,
+        .init_IRQ               = pmac_init_IRQ,
+        .get_irq                = mpic_get_irq,
+        .pcibios_fixup          = pmac_pcibios_fixup,
+        .restart                = pmac_restart,
+        .power_off              = pmac_power_off,
+        .halt                   = pmac_halt,
+        .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               = pmac_progress,
+        .check_legacy_ioport    = pmac_check_legacy_ioport
+};