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, 778 insertions, 0 deletions

diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
new file mode 100644
index 000000000000..e97ce635b99e
--- /dev/null
+++ b/arch/ppc/kernel/setup.c
@@ -0,0 +1,778 @@
+/*
+ * Common prep/pmac/chrp boot and setup code.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/string.h>
+#include <linux/sched.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/reboot.h>
+#include <linux/delay.h>
+#include <linux/initrd.h>
+#include <linux/ide.h>
+#include <linux/tty.h>
+#include <linux/bootmem.h>
+#include <linux/seq_file.h>
+#include <linux/root_dev.h>
+#include <linux/cpu.h>
+#include <linux/console.h>
+
+#include <asm/residual.h>
+#include <asm/io.h>
+#include <asm/prom.h>
+#include <asm/processor.h>
+#include <asm/pgtable.h>
+#include <asm/bootinfo.h>
+#include <asm/setup.h>
+#include <asm/amigappc.h>
+#include <asm/smp.h>
+#include <asm/elf.h>
+#include <asm/cputable.h>
+#include <asm/bootx.h>
+#include <asm/btext.h>
+#include <asm/machdep.h>
+#include <asm/uaccess.h>
+#include <asm/system.h>
+#include <asm/pmac_feature.h>
+#include <asm/sections.h>
+#include <asm/nvram.h>
+#include <asm/xmon.h>
+#include <asm/ocp.h>
+
+#if defined(CONFIG_85xx) || defined(CONFIG_83xx)
+#include <asm/ppc_sys.h>
+#endif
+
+#if defined CONFIG_KGDB
+#include <asm/kgdb.h>
+#endif
+
+extern void platform_init(unsigned long r3, unsigned long r4,
+		unsigned long r5, unsigned long r6, unsigned long r7);
+extern void bootx_init(unsigned long r4, unsigned long phys);
+extern void identify_cpu(unsigned long offset, unsigned long cpu);
+extern void do_cpu_ftr_fixups(unsigned long offset);
+extern void reloc_got2(unsigned long offset);
+
+extern void ppc6xx_idle(void);
+extern void power4_idle(void);
+
+extern boot_infos_t *boot_infos;
+struct ide_machdep_calls ppc_ide_md;
+char *sysmap;
+unsigned long sysmap_size;
+
+/* Used with the BI_MEMSIZE bootinfo parameter to store the memory
+   size value reported by the boot loader. */
+unsigned long boot_mem_size;
+
+unsigned long ISA_DMA_THRESHOLD;
+unsigned long DMA_MODE_READ, DMA_MODE_WRITE;
+
+#ifdef CONFIG_PPC_MULTIPLATFORM
+int _machine = 0;
+
+extern void prep_init(unsigned long r3, unsigned long r4,
+		unsigned long r5, unsigned long r6, unsigned long r7);
+extern void pmac_init(unsigned long r3, unsigned long r4,
+		unsigned long r5, unsigned long r6, unsigned long r7);
+extern void chrp_init(unsigned long r3, unsigned long r4,
+		unsigned long r5, unsigned long r6, unsigned long r7);
+#endif /* CONFIG_PPC_MULTIPLATFORM */
+
+#ifdef CONFIG_MAGIC_SYSRQ
+unsigned long SYSRQ_KEY = 0x54;
+#endif /* CONFIG_MAGIC_SYSRQ */
+
+#ifdef CONFIG_VGA_CONSOLE
+unsigned long vgacon_remap_base;
+#endif
+
+struct machdep_calls ppc_md;
+
+/*
+ * These are used in binfmt_elf.c to put aux entries on the stack
+ * for each elf executable being started.
+ */
+int dcache_bsize;
+int icache_bsize;
+int ucache_bsize;
+
+#if defined(CONFIG_VGA_CONSOLE) || defined(CONFIG_FB_VGA16) || \
+    defined(CONFIG_FB_VGA16_MODULE) || defined(CONFIG_FB_VESA)
+struct screen_info screen_info = {
+	0, 25,			/* orig-x, orig-y */
+	0,			/* unused */
+	0,			/* orig-video-page */
+	0,			/* orig-video-mode */
+	80,			/* orig-video-cols */
+	0,0,0,			/* ega_ax, ega_bx, ega_cx */
+	25,			/* orig-video-lines */
+	1,			/* orig-video-isVGA */
+	16			/* orig-video-points */
+};
+#endif /* CONFIG_VGA_CONSOLE || CONFIG_FB_VGA16 || CONFIG_FB_VESA */
+
+void machine_restart(char *cmd)
+{
+#ifdef CONFIG_NVRAM
+	nvram_sync();
+#endif
+	ppc_md.restart(cmd);
+}
+
+EXPORT_SYMBOL(machine_restart);
+
+void machine_power_off(void)
+{
+#ifdef CONFIG_NVRAM
+	nvram_sync();
+#endif
+	ppc_md.power_off();
+}
+
+EXPORT_SYMBOL(machine_power_off);
+
+void machine_halt(void)
+{
+#ifdef CONFIG_NVRAM
+	nvram_sync();
+#endif
+	ppc_md.halt();
+}
+
+EXPORT_SYMBOL(machine_halt);
+
+void (*pm_power_off)(void) = machine_power_off;
+
+#ifdef CONFIG_TAU
+extern u32 cpu_temp(unsigned long cpu);
+extern u32 cpu_temp_both(unsigned long cpu);
+#endif /* CONFIG_TAU */
+
+int show_cpuinfo(struct seq_file *m, void *v)
+{
+	int i = (int) v - 1;
+	int err = 0;
+	unsigned int pvr;
+	unsigned short maj, min;
+	unsigned long lpj;
+
+	if (i >= NR_CPUS) {
+		/* Show summary information */
+#ifdef CONFIG_SMP
+		unsigned long bogosum = 0;
+		for (i = 0; i < NR_CPUS; ++i)
+			if (cpu_online(i))
+				bogosum += cpu_data[i].loops_per_jiffy;
+		seq_printf(m, "total bogomips\t: %lu.%02lu\n",
+			   bogosum/(500000/HZ), bogosum/(5000/HZ) % 100);
+#endif /* CONFIG_SMP */
+
+		if (ppc_md.show_cpuinfo != NULL)
+			err = ppc_md.show_cpuinfo(m);
+		return err;
+	}
+
+#ifdef CONFIG_SMP
+	if (!cpu_online(i))
+		return 0;
+	pvr = cpu_data[i].pvr;
+	lpj = cpu_data[i].loops_per_jiffy;
+#else
+	pvr = mfspr(SPRN_PVR);
+	lpj = loops_per_jiffy;
+#endif
+
+	seq_printf(m, "processor\t: %d\n", i);
+	seq_printf(m, "cpu\t\t: ");
+
+	if (cur_cpu_spec[i]->pvr_mask)
+		seq_printf(m, "%s", cur_cpu_spec[i]->cpu_name);
+	else
+		seq_printf(m, "unknown (%08x)", pvr);
+#ifdef CONFIG_ALTIVEC
+	if (cur_cpu_spec[i]->cpu_features & CPU_FTR_ALTIVEC)
+		seq_printf(m, ", altivec supported");
+#endif
+	seq_printf(m, "\n");
+
+#ifdef CONFIG_TAU
+	if (cur_cpu_spec[i]->cpu_features & CPU_FTR_TAU) {
+#ifdef CONFIG_TAU_AVERAGE
+		/* more straightforward, but potentially misleading */
+		seq_printf(m,  "temperature \t: %u C (uncalibrated)\n",
+			   cpu_temp(i));
+#else
+		/* show the actual temp sensor range */
+		u32 temp;
+		temp = cpu_temp_both(i);
+		seq_printf(m, "temperature \t: %u-%u C (uncalibrated)\n",
+			   temp & 0xff, temp >> 16);
+#endif
+	}
+#endif /* CONFIG_TAU */
+
+	if (ppc_md.show_percpuinfo != NULL) {
+		err = ppc_md.show_percpuinfo(m, i);
+		if (err)
+			return err;
+	}
+
+	switch (PVR_VER(pvr)) {
+	case 0x0020:	/* 403 family */
+		maj = PVR_MAJ(pvr) + 1;
+		min = PVR_MIN(pvr);
+		break;
+	case 0x1008:	/* 740P/750P ?? */
+		maj = ((pvr >> 8) & 0xFF) - 1;
+		min = pvr & 0xFF;
+		break;
+	case 0x8083:	/* e300 */
+		maj = PVR_MAJ(pvr);
+		min = PVR_MIN(pvr);
+		break;
+	case 0x8020:	/* e500 */
+		maj = PVR_MAJ(pvr);
+		min = PVR_MIN(pvr);
+		break;
+	default:
+		maj = (pvr >> 8) & 0xFF;
+		min = pvr & 0xFF;
+		break;
+	}
+
+	seq_printf(m, "revision\t: %hd.%hd (pvr %04x %04x)\n",
+		   maj, min, PVR_VER(pvr), PVR_REV(pvr));
+
+	seq_printf(m, "bogomips\t: %lu.%02lu\n",
+		   lpj / (500000/HZ), (lpj / (5000/HZ)) % 100);
+
+#if defined(CONFIG_85xx) || defined(CONFIG_83xx)
+	if (cur_ppc_sys_spec->ppc_sys_name)
+		seq_printf(m, "chipset\t\t: %s\n",
+			cur_ppc_sys_spec->ppc_sys_name);
+#endif
+
+#ifdef CONFIG_SMP
+	seq_printf(m, "\n");
+#endif
+
+	return 0;
+}
+
+static void *c_start(struct seq_file *m, loff_t *pos)
+{
+	int i = *pos;
+
+	return i <= NR_CPUS? (void *) (i + 1): NULL;
+}
+
+static void *c_next(struct seq_file *m, void *v, loff_t *pos)
+{
+	++*pos;
+	return c_start(m, pos);
+}
+
+static void c_stop(struct seq_file *m, void *v)
+{
+}
+
+struct seq_operations cpuinfo_op = {
+	.start =c_start,
+	.next =	c_next,
+	.stop =	c_stop,
+	.show =	show_cpuinfo,
+};
+
+/*
+ * We're called here very early in the boot.  We determine the machine
+ * type and call the appropriate low-level setup functions.
+ *  -- Cort <cort@fsmlabs.com>
+ *
+ * Note that the kernel may be running at an address which is different
+ * from the address that it was linked at, so we must use RELOC/PTRRELOC
+ * to access static data (including strings).  -- paulus
+ */
+__init
+unsigned long
+early_init(int r3, int r4, int r5)
+{
+ 	unsigned long phys;
+	unsigned long offset = reloc_offset();
+
+ 	/* Default */
+ 	phys = offset + KERNELBASE;
+
+	/* First zero the BSS -- use memset, some arches don't have
+	 * caches on yet */
+	memset_io(PTRRELOC(&__bss_start), 0, _end - __bss_start);
+
+	/*
+	 * Identify the CPU type and fix up code sections
+	 * that depend on which cpu we have.
+	 */
+	identify_cpu(offset, 0);
+	do_cpu_ftr_fixups(offset);
+
+#if defined(CONFIG_PPC_MULTIPLATFORM)
+	reloc_got2(offset);
+
+	/* If we came here from BootX, clear the screen,
+	 * set up some pointers and return. */
+	if ((r3 == 0x426f6f58) && (r5 == 0))
+		bootx_init(r4, phys);
+
+	/*
+	 * don't do anything on prep
+	 * for now, don't use bootinfo because it breaks yaboot 0.5
+	 * and assume that if we didn't find a magic number, we have OF
+	 */
+	else if (*(unsigned long *)(0) != 0xdeadc0de)
+		phys = prom_init(r3, r4, (prom_entry)r5);
+
+	reloc_got2(-offset);
+#endif
+
+	return phys;
+}
+
+#ifdef CONFIG_PPC_OF
+/*
+ * Assume here that all clock rates are the same in a
+ * smp system.  -- Cort
+ */
+int __openfirmware
+of_show_percpuinfo(struct seq_file *m, int i)
+{
+	struct device_node *cpu_node;
+	u32 *fp;
+	int s;
+	
+	cpu_node = find_type_devices("cpu");
+	if (!cpu_node)
+		return 0;
+	for (s = 0; s < i && cpu_node->next; s++)
+		cpu_node = cpu_node->next;
+	fp = (u32 *)get_property(cpu_node, "clock-frequency", NULL);
+	if (fp)
+		seq_printf(m, "clock\t\t: %dMHz\n", *fp / 1000000);
+	return 0;
+}
+
+void __init
+intuit_machine_type(void)
+{
+	char *model;
+	struct device_node *root;
+	
+	/* ask the OF info if we're a chrp or pmac */
+	root = find_path_device("/");
+	if (root != 0) {
+		/* assume pmac unless proven to be chrp -- Cort */
+		_machine = _MACH_Pmac;
+		model = get_property(root, "device_type", NULL);
+		if (model && !strncmp("chrp", model, 4))
+			_machine = _MACH_chrp;
+		else {
+			model = get_property(root, "model", NULL);
+			if (model && !strncmp(model, "IBM", 3))
+				_machine = _MACH_chrp;
+		}
+	}
+}
+#endif
+
+#ifdef CONFIG_PPC_MULTIPLATFORM
+/*
+ * The PPC_MULTIPLATFORM version of platform_init...
+ */
+void __init
+platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	      unsigned long r6, unsigned long r7)
+{
+#ifdef CONFIG_BOOTX_TEXT
+	if (boot_text_mapped) {
+		btext_clearscreen();
+		btext_welcome();
+	}
+#endif
+
+	parse_bootinfo(find_bootinfo());
+
+	/* if we didn't get any bootinfo telling us what we are... */
+	if (_machine == 0) {
+		/* prep boot loader tells us if we're prep or not */
+		if ( *(unsigned long *)(KERNELBASE) == (0xdeadc0de) )
+			_machine = _MACH_prep;
+	}
+
+	/* not much more to do here, if prep */
+	if (_machine == _MACH_prep) {
+		prep_init(r3, r4, r5, r6, r7);
+		return;
+	}
+
+	/* prom_init has already been called from __start */
+	if (boot_infos)
+		relocate_nodes();
+
+	/* If we aren't PReP, we can find out if we're Pmac
+	 * or CHRP with this. */
+	if (_machine == 0)
+		intuit_machine_type();
+
+	/* finish_device_tree may need _machine defined. */
+	finish_device_tree();
+
+	/*
+	 * If we were booted via quik, r3 points to the physical
+	 * address of the command-line parameters.
+	 * If we were booted from an xcoff image (i.e. netbooted or
+	 * booted from floppy), we get the command line from the
+	 * bootargs property of the /chosen node.
+	 * If an initial ramdisk is present, r3 and r4
+	 * are used for initrd_start and initrd_size,
+	 * otherwise they contain 0xdeadbeef.
+	 */
+	if (r3 >= 0x4000 && r3 < 0x800000 && r4 == 0) {
+		strlcpy(cmd_line, (char *)r3 + KERNELBASE,
+			sizeof(cmd_line));
+	} else if (boot_infos != 0) {
+		/* booted by BootX - check for ramdisk */
+		if (boot_infos->kernelParamsOffset != 0)
+			strlcpy(cmd_line, (char *) boot_infos
+				+ boot_infos->kernelParamsOffset,
+				sizeof(cmd_line));
+#ifdef CONFIG_BLK_DEV_INITRD
+		if (boot_infos->ramDisk) {
+			initrd_start = (unsigned long) boot_infos
+				+ boot_infos->ramDisk;
+			initrd_end = initrd_start + boot_infos->ramDiskSize;
+			initrd_below_start_ok = 1;
+		}
+#endif
+	} else {
+		struct device_node *chosen;
+		char *p;
+	
+#ifdef CONFIG_BLK_DEV_INITRD
+		if (r3 && r4 && r4 != 0xdeadbeef) {
+			if (r3 < KERNELBASE)
+				r3 += KERNELBASE;
+			initrd_start = r3;
+			initrd_end = r3 + r4;
+			ROOT_DEV = Root_RAM0;
+			initrd_below_start_ok = 1;
+		}
+#endif
+		chosen = find_devices("chosen");
+		if (chosen != NULL) {
+			p = get_property(chosen, "bootargs", NULL);
+			if (p && *p) {
+				strlcpy(cmd_line, p, sizeof(cmd_line));
+			}
+		}
+	}
+#ifdef CONFIG_ADB
+	if (strstr(cmd_line, "adb_sync")) {
+		extern int __adb_probe_sync;
+		__adb_probe_sync = 1;
+	}
+#endif /* CONFIG_ADB */
+
+	switch (_machine) {
+	case _MACH_Pmac:
+		pmac_init(r3, r4, r5, r6, r7);
+		break;
+	case _MACH_chrp:
+		chrp_init(r3, r4, r5, r6, r7);
+		break;
+	}
+}
+
+#ifdef CONFIG_SERIAL_CORE_CONSOLE
+extern char *of_stdout_device;
+
+static int __init set_preferred_console(void)
+{
+	struct device_node *prom_stdout;
+	char *name;
+	int offset;
+
+	if (of_stdout_device == NULL)
+		return -ENODEV;
+
+	/* The user has requested a console so this is already set up. */
+	if (strstr(saved_command_line, "console="))
+		return -EBUSY;
+
+	prom_stdout = find_path_device(of_stdout_device);
+	if (!prom_stdout)
+		return -ENODEV;
+
+	name = (char *)get_property(prom_stdout, "name", NULL);
+	if (!name)
+		return -ENODEV;
+
+	if (strcmp(name, "serial") == 0) {
+		int i;
+		u32 *reg = (u32 *)get_property(prom_stdout, "reg", &i);
+		if (i > 8) {
+			switch (reg[1]) {
+				case 0x3f8:
+					offset = 0;
+					break;
+				case 0x2f8:
+					offset = 1;
+					break;
+				case 0x898:
+					offset = 2;
+					break;
+				case 0x890:
+					offset = 3;
+					break;
+				default:
+					/* We dont recognise the serial port */
+					return -ENODEV;
+			}
+		}
+	} else if (strcmp(name, "ch-a") == 0)
+		offset = 0;
+	else if (strcmp(name, "ch-b") == 0)
+		offset = 1;
+	else
+		return -ENODEV;
+	return add_preferred_console("ttyS", offset, NULL);
+}
+console_initcall(set_preferred_console);
+#endif /* CONFIG_SERIAL_CORE_CONSOLE */
+#endif /* CONFIG_PPC_MULTIPLATFORM */
+
+struct bi_record *find_bootinfo(void)
+{
+	struct bi_record *rec;
+
+	rec = (struct bi_record *)_ALIGN((ulong)__bss_start+(1<<20)-1,(1<<20));
+	if ( rec->tag != BI_FIRST ) {
+		/*
+		 * This 0x10000 offset is a terrible hack but it will go away when
+		 * we have the bootloader handle all the relocation and
+		 * prom calls -- Cort
+		 */
+		rec = (struct bi_record *)_ALIGN((ulong)__bss_start+0x10000+(1<<20)-1,(1<<20));
+		if ( rec->tag != BI_FIRST )
+			return NULL;
+	}
+	return rec;
+}
+
+void parse_bootinfo(struct bi_record *rec)
+{
+	if (rec == NULL || rec->tag != BI_FIRST)
+		return;
+	while (rec->tag != BI_LAST) {
+		ulong *data = rec->data;
+		switch (rec->tag) {
+		case BI_CMD_LINE:
+			strlcpy(cmd_line, (void *)data, sizeof(cmd_line));
+			break;
+		case BI_SYSMAP:
+			sysmap = (char *)((data[0] >= (KERNELBASE)) ? data[0] :
+					  (data[0]+KERNELBASE));
+			sysmap_size = data[1];
+			break;
+#ifdef CONFIG_BLK_DEV_INITRD
+		case BI_INITRD:
+			initrd_start = data[0] + KERNELBASE;
+			initrd_end = data[0] + data[1] + KERNELBASE;
+			break;
+#endif /* CONFIG_BLK_DEV_INITRD */
+#ifdef CONFIG_PPC_MULTIPLATFORM
+		case BI_MACHTYPE:
+			_machine = data[0];
+			break;
+#endif
+		case BI_MEMSIZE:
+			boot_mem_size = data[0];
+			break;
+		}
+		rec = (struct bi_record *)((ulong)rec + rec->size);
+	}
+}
+
+/*
+ * Find out what kind of machine we're on and save any data we need
+ * from the early boot process (devtree is copied on pmac by prom_init()).
+ * This is called very early on the boot process, after a minimal
+ * MMU environment has been set up but before MMU_init is called.
+ */
+void __init
+machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
+	     unsigned long r6, unsigned long r7)
+{
+#ifdef CONFIG_CMDLINE
+	strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
+#endif /* CONFIG_CMDLINE */
+
+#ifdef CONFIG_6xx
+	ppc_md.power_save = ppc6xx_idle;
+#endif
+#ifdef CONFIG_POWER4
+	ppc_md.power_save = power4_idle;
+#endif
+
+	platform_init(r3, r4, r5, r6, r7);
+
+	if (ppc_md.progress)
+		ppc_md.progress("id mach(): done", 0x200);
+}
+
+/* Checks "l2cr=xxxx" command-line option */
+int __init ppc_setup_l2cr(char *str)
+{
+	if (cpu_has_feature(CPU_FTR_L2CR)) {
+		unsigned long val = simple_strtoul(str, NULL, 0);
+		printk(KERN_INFO "l2cr set to %lx\n", val);
+		_set_L2CR(0);		/* force invalidate by disable cache */
+		_set_L2CR(val);		/* and enable it */
+	}
+	return 1;
+}
+__setup("l2cr=", ppc_setup_l2cr);
+
+#ifdef CONFIG_GENERIC_NVRAM
+
+/* Generic nvram hooks used by drivers/char/gen_nvram.c */
+unsigned char nvram_read_byte(int addr)
+{
+	if (ppc_md.nvram_read_val)
+		return ppc_md.nvram_read_val(addr);
+	return 0xff;
+}
+EXPORT_SYMBOL(nvram_read_byte);
+
+void nvram_write_byte(unsigned char val, int addr)
+{
+	if (ppc_md.nvram_write_val)
+		ppc_md.nvram_write_val(addr, val);
+}
+EXPORT_SYMBOL(nvram_write_byte);
+
+void nvram_sync(void)
+{
+	if (ppc_md.nvram_sync)
+		ppc_md.nvram_sync();
+}
+EXPORT_SYMBOL(nvram_sync);
+
+#endif /* CONFIG_NVRAM */
+
+static struct cpu cpu_devices[NR_CPUS];
+
+int __init ppc_init(void)
+{
+	int i;
+
+	/* clear the progress line */
+	if ( ppc_md.progress ) ppc_md.progress("             ", 0xffff);
+
+	/* register CPU devices */
+	for (i = 0; i < NR_CPUS; i++)
+		if (cpu_possible(i))
+			register_cpu(&cpu_devices[i], i, NULL);
+
+	/* call platform init */
+	if (ppc_md.init != NULL) {
+		ppc_md.init();
+	}
+	return 0;
+}
+
+arch_initcall(ppc_init);
+
+/* Warning, IO base is not yet inited */
+void __init setup_arch(char **cmdline_p)
+{
+	extern char *klimit;
+	extern void do_init_bootmem(void);
+
+	/* so udelay does something sensible, assume <= 1000 bogomips */
+	loops_per_jiffy = 500000000 / HZ;
+
+#ifdef CONFIG_PPC_MULTIPLATFORM
+	/* This could be called "early setup arch", it must be done
+	 * now because xmon need it
+	 */
+	if (_machine == _MACH_Pmac)
+		pmac_feature_init();	/* New cool way */
+#endif
+
+#ifdef CONFIG_XMON
+	xmon_map_scc();
+	if (strstr(cmd_line, "xmon"))
+		xmon(NULL);
+#endif /* CONFIG_XMON */
+	if ( ppc_md.progress ) ppc_md.progress("setup_arch: enter", 0x3eab);
+
+#if defined(CONFIG_KGDB)
+	if (ppc_md.kgdb_map_scc)
+		ppc_md.kgdb_map_scc();
+	set_debug_traps();
+	if (strstr(cmd_line, "gdb")) {
+		if (ppc_md.progress)
+			ppc_md.progress("setup_arch: kgdb breakpoint", 0x4000);
+		printk("kgdb breakpoint activated\n");
+		breakpoint();
+	}
+#endif
+
+	/*
+	 * Set cache line size based on type of cpu as a default.
+	 * Systems with OF can look in the properties on the cpu node(s)
+	 * for a possibly more accurate value.
+	 */
+	if (cpu_has_feature(CPU_FTR_SPLIT_ID_CACHE)) {
+		dcache_bsize = cur_cpu_spec[0]->dcache_bsize;
+		icache_bsize = cur_cpu_spec[0]->icache_bsize;
+		ucache_bsize = 0;
+	} else
+		ucache_bsize = dcache_bsize = icache_bsize
+			= cur_cpu_spec[0]->dcache_bsize;
+
+	/* reboot on panic */
+	panic_timeout = 180;
+
+	init_mm.start_code = PAGE_OFFSET;
+	init_mm.end_code = (unsigned long) _etext;
+	init_mm.end_data = (unsigned long) _edata;
+	init_mm.brk = (unsigned long) klimit;
+
+	/* Save unparsed command line copy for /proc/cmdline */
+	strlcpy(saved_command_line, cmd_line, COMMAND_LINE_SIZE);
+	*cmdline_p = cmd_line;
+
+	/* set up the bootmem stuff with available memory */
+	do_init_bootmem();
+	if ( ppc_md.progress ) ppc_md.progress("setup_arch: bootmem", 0x3eab);
+
+#ifdef CONFIG_PPC_OCP
+	/* Initialize OCP device list */
+	ocp_early_init();
+	if ( ppc_md.progress ) ppc_md.progress("ocp: exit", 0x3eab);
+#endif
+
+#ifdef CONFIG_DUMMY_CONSOLE
+	conswitchp = &dummy_con;
+#endif
+
+	ppc_md.setup_arch();
+	if ( ppc_md.progress ) ppc_md.progress("arch: exit", 0x3eab);
+
+	paging_init();
+
+	/* this is for modules since _machine can be a define -- Cort */
+	ppc_md.ppc_machine = _machine;
+}