ppc: Remove CHRP, POWER3 and POWER4 support from arch/ppc

32-bit CHRP machines are now supported only in arch/powerpc, as are
all 64-bit PowerPC processors.  This means that we don't use
Open Firmware on any platform in arch/ppc any more.

This makes PReP support a single-platform option like every other
platform support option in arch/ppc now, thus CONFIG_PPC_MULTIPLATFORM
is gone from arch/ppc.  CONFIG_PPC_PREP is the option that selects
PReP support and is generally what has replaced
CONFIG_PPC_MULTIPLATFORM within arch/ppc.

_machine is all but dead now, being #defined to 0.

Updated Makefiles, comments and Kconfig options generally to reflect
these changes.

Signed-off-by: Paul Mackerras <paulus@samba.org>

1 files changed, 7 insertions, 247 deletions

diff --git a/arch/ppc/kernel/setup.c b/arch/ppc/kernel/setup.c
index 53e9deacee82..7eb91a2e818a 100644
--- a/arch/ppc/kernel/setup.c
+++ b/arch/ppc/kernel/setup.c
@@ -1,5 +1,5 @@
 /*
- * Common prep/chrp boot and setup code.
+ * Common prep boot and setup code.
  */
 
 #include <linux/config.h>
@@ -72,17 +72,12 @@ unsigned long ISA_DMA_THRESHOLD;
 unsigned int DMA_MODE_READ;
 unsigned int DMA_MODE_WRITE;
 
-#ifdef CONFIG_PPC_MULTIPLATFORM
-int _machine = 0;
-EXPORT_SYMBOL(_machine);
-
+#ifdef CONFIG_PPC_PREP
 extern void prep_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);
 
 dev_t boot_dev;
-#endif /* CONFIG_PPC_MULTIPLATFORM */
+#endif /* CONFIG_PPC_PREP */
 
 int have_of;
 EXPORT_SYMBOL(have_of);
@@ -319,72 +314,12 @@ early_init(int r3, int r4, int r5)
 	identify_cpu(offset, 0);
 	do_cpu_ftr_fixups(offset);
 
-#if defined(CONFIG_PPC_OF)
-	reloc_got2(offset);
-
-	/*
-	 * 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
-	 */
-	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
-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
+#ifdef CONFIG_PPC_PREP
 /*
- * The PPC_MULTIPLATFORM version of platform_init...
+ * The PPC_PREP version of platform_init...
  */
 void __init
 platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
@@ -399,161 +334,9 @@ platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
 
 	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;
-	}
-
-#ifdef CONFIG_PPC_PREP
-	/* not much more to do here, if prep */
-	if (_machine == _MACH_prep) {
-		prep_init(r3, r4, r5, r6, r7);
-		return;
-	}
-#endif
-
-#ifdef CONFIG_PPC_OF
-	have_of = 1;
-
-	/* 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) {
-#ifdef CONFIG_PPC_CHRP
-	case _MACH_chrp:
-		chrp_init(r3, r4, r5, r6, r7);
-		break;
-#endif
-	}
-#endif /* CONFIG_PPC_OF */
+	prep_init(r3, r4, r5, r6, r7);
 }
-#endif /* CONFIG_PPC_MULTIPLATFORM */
-
-#ifdef CONFIG_PPC_OF
-#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 = 0;
-
-	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_OF */
+#endif /* CONFIG_PPC_PREP */
 
 struct bi_record *find_bootinfo(void)
 {
@@ -589,23 +372,6 @@ void parse_bootinfo(struct bi_record *rec)
 			initrd_end = data[0] + data[1] + KERNELBASE;
 			break;
 #endif /* CONFIG_BLK_DEV_INITRD */
-#ifdef CONFIG_PPC_MULTIPLATFORM
-		case BI_MACHTYPE:
-			/* Machine types changed with the merge. Since the
-			 * bootinfo are now deprecated, we can just hard code
-			 * the appropriate conversion here for when we are
-			 * called with yaboot which passes us a machine type
-			 * this way.
-			 */
-			switch(data[0]) {
-			case 1: _machine = _MACH_prep; break;
-			case 2: _machine = _MACH_Pmac; break;
-			case 4: _machine = _MACH_chrp; break;
-			default:
-				_machine = data[0];
-			}
-			break;
-#endif
 		case BI_MEMSIZE:
 			boot_mem_size = data[0];
 			break;
@@ -631,9 +397,6 @@ machine_init(unsigned long r3, unsigned long r4, unsigned long r5,
 #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);
 
@@ -799,7 +562,4 @@ void __init setup_arch(char **cmdline_p)
 	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;
 }