powerpc: Merge in 64-bit powermac support.

This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c to
arch/powerpc/platforms/powermac/*.c and makes various minor tweaks
elsewhere.  On the powermac we now initialize ppc_md by copying
the whole pmac_md structure into it, which required some changes in
the ordering of initializations of individual fields of it.
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/powerpc/Kconfig

@@ -290,6 +290,7 @@ config PPC_PMAC
 config PPC_PMAC64
 	bool
 	depends on PPC_PMAC && POWER4
+	select U3_DART
 	default y
 
 config PPC_PREP

arch/powerpc/kernel/head_64.S

@@ -1501,20 +1501,17 @@ copy_to_here:
 	.section ".text";
 	.align 2 ;
 
-	.globl	pmac_secondary_start_1	
-pmac_secondary_start_1:	
-	li	r24, 1
-	b	.pmac_secondary_start
-	
-	.globl pmac_secondary_start_2
-pmac_secondary_start_2:	
-	li	r24, 2
-	b	.pmac_secondary_start
-	
-	.globl pmac_secondary_start_3
-pmac_secondary_start_3:
-	li	r24, 3
-	b	.pmac_secondary_start
+	.globl	__secondary_start_pmac_0
+__secondary_start_pmac_0:
+	/* NB the entries for cpus 0, 1, 2 must each occupy 8 bytes. */
+	li	r24,0
+	b	1f
+	li	r24,1
+	b	1f
+	li	r24,2
+	b	1f
+	li	r24,3
+1:
 	
 _GLOBAL(pmac_secondary_start)
 	/* turn on 64-bit mode */

arch/powerpc/kernel/prom_init.c

@@ -772,7 +772,7 @@ static unsigned long __init prom_next_cell(int s, cell_t **cellp)
 	}
 	r = *p++;
 #ifdef CONFIG_PPC64
-	if (s) {
+	if (s > 1) {
 		r <<= 32;
 		r |= *(p++);
 	}
@@ -2059,7 +2059,7 @@ unsigned long __init prom_init(unsigned long r3, unsigned long r4,
 	reloc_got2(-offset);
 #endif
 
-	__start(hdr, 0, 0);
+	__start(hdr, KERNELBASE + offset, 0);
 
 	return 0;
 }

arch/powerpc/kernel/setup_32.c

@@ -464,14 +464,11 @@ void __init machine_init(unsigned long dt_ptr, unsigned long phys)
 	strlcpy(cmd_line, CONFIG_CMDLINE, sizeof(cmd_line));
 #endif /* CONFIG_CMDLINE */
 
+	platform_init();
+
 #ifdef CONFIG_6xx
 	ppc_md.power_save = ppc6xx_idle;
 #endif
-#ifdef CONFIG_POWER4
-	ppc_md.power_save = power4_idle;
-#endif
-
-	platform_init();
 
 	if (ppc_md.progress)
 		ppc_md.progress("id mach(): done", 0x200);

arch/powerpc/platforms/Makefile

-ifeq ($(CONFIG_PPC32),y)
+ifeq ($(CONFIG_PPC_MERGE),y)
 obj-$(CONFIG_PPC_PMAC)		+= powermac/
 endif
 obj-$(CONFIG_4xx)		+= 4xx/

arch/powerpc/platforms/powermac/Makefile

-obj-$(CONFIG_PPC_PMAC)		+= pic.o setup.o time.o feature.o pci.o \
+obj-y				+= pic.o setup.o time.o feature.o pci.o \
 				   sleep.o low_i2c.o cache.o
 obj-$(CONFIG_PMAC_BACKLIGHT)	+= backlight.o
 obj-$(CONFIG_CPU_FREQ_PMAC)	+= cpufreq.o
-ifeq ($(CONFIG_PPC_PMAC),y)
 obj-$(CONFIG_NVRAM)		+= nvram.o
+# ppc64 pmac doesn't define CONFIG_NVRAM but needs nvram stuff
+obj-$(CONFIG_PPC64)		+= nvram.o
 obj-$(CONFIG_SMP)		+= smp.o
-endif

arch/powerpc/platforms/powermac/feature.c

@@ -2960,7 +2960,6 @@ static void dump_HT_speeds(char *name, u32 cfg, u32 frq)
 
 void __init pmac_check_ht_link(void)
 {
-#if 0 /* Disabled for now */
 	u32	ufreq, freq, ucfg, cfg;
 	struct device_node *pcix_node;
 	u8	px_bus, px_devfn;
@@ -2991,10 +2990,8 @@ void __init pmac_check_ht_link(void)
 	early_read_config_dword(px_hose, px_bus, px_devfn, 0xc8, &cfg);
 	early_read_config_dword(px_hose, px_bus, px_devfn, 0xd0, &freq);
 	dump_HT_speeds("PCI-X HT Downlink", cfg, freq);
-#endif
 }
-
-#endif /* CONFIG_POWER4 */
+#endif /* 0 */
 
 /*
  * Early video resume hook

arch/powerpc/platforms/powermac/nvram.c

@@ -48,6 +48,7 @@
 /* On Core99, nvram is either a sharp, a micron or an AMD flash */
 #define SM_FLASH_STATUS_DONE	0x80
 #define SM_FLASH_STATUS_ERR	0x38
+
 #define SM_FLASH_CMD_ERASE_CONFIRM	0xd0
 #define SM_FLASH_CMD_ERASE_SETUP	0x20
 #define SM_FLASH_CMD_RESET		0xff
@@ -75,11 +76,11 @@ struct core99_header {
  * Read and write the non-volatile RAM on PowerMacs and CHRP machines.
  */
 static int nvram_naddrs;
-static volatile unsigned char *nvram_addr;
 static volatile unsigned char *nvram_data;
-static int nvram_mult, is_core_99;
+static int is_core_99;
 static int core99_bank = 0;
 static int nvram_partitions[3];
+// XXX Turn that into a sem
 static DEFINE_SPINLOCK(nv_lock);
 
 extern int pmac_newworld;
@@ -105,6 +106,52 @@ static void core99_nvram_write_byte(int addr, unsigned char val)
 	nvram_image[addr] = val;
 }
 
+static ssize_t core99_nvram_read(char *buf, size_t count, loff_t *index)
+{
+	int i;
+
+	if (nvram_image == NULL)
+		return -ENODEV;
+	if (*index > NVRAM_SIZE)
+		return 0;
+
+	i = *index;
+	if (i + count > NVRAM_SIZE)
+		count = NVRAM_SIZE - i;
+
+	memcpy(buf, &nvram_image[i], count);
+	*index = i + count;
+	return count;
+}
+
+static ssize_t core99_nvram_write(char *buf, size_t count, loff_t *index)
+{
+	int i;
+
+	if (nvram_image == NULL)
+		return -ENODEV;
+	if (*index > NVRAM_SIZE)
+		return 0;
+
+	i = *index;
+	if (i + count > NVRAM_SIZE)
+		count = NVRAM_SIZE - i;
+
+	memcpy(&nvram_image[i], buf, count);
+	*index = i + count;
+	return count;
+}
+
+static ssize_t core99_nvram_size(void)
+{
+	if (nvram_image == NULL)
+		return -ENODEV;
+	return NVRAM_SIZE;
+}
+
+#ifdef CONFIG_PPC32
+static volatile unsigned char *nvram_addr;
+static int nvram_mult;
 
 static unsigned char direct_nvram_read_byte(int addr)
 {
@@ -181,7 +228,7 @@ static void pmu_nvram_write_byte(int addr, unsigned char val)
 }
 
 #endif /* CONFIG_ADB_PMU */
-
+#endif /* CONFIG_PPC32 */
 
 static u8 chrp_checksum(struct chrp_header* hdr)
 {
@@ -249,7 +296,7 @@ static int sm_erase_bank(int bank)
 	timeout = 0;
 	do {
 		if (++timeout > 1000000) {
-			printk(KERN_ERR "nvram: Sharp/Miron flash erase timeout !\n");
+			printk(KERN_ERR "nvram: Sharp/Micron flash erase timeout !\n");
 			break;
 		}
 		out_8(base, SM_FLASH_CMD_READ_STATUS);
@@ -411,7 +458,7 @@ static void __init lookup_partitions(void)
 		buffer[16] = 0;
 		do {
 			for (i=0;i<16;i++)
-				buffer[i] = nvram_read_byte(offset+i);
+				buffer[i] = ppc_md.nvram_read_val(offset+i);
 			if (!strcmp(hdr->name, "common"))
 				nvram_partitions[pmac_nvram_OF] = offset + 0x10;
 			if (!strcmp(hdr->name, "APL,MacOS75")) {
@@ -467,31 +514,19 @@ static void core99_nvram_sync(void)
 #endif
 }
 
-void __init pmac_nvram_init(void)
+static int __init core99_nvram_setup(struct device_node *dp)
 {
-	struct device_node *dp;
-
-	nvram_naddrs = 0;
-
-	dp = find_devices("nvram");
-	if (dp == NULL) {
-		printk(KERN_ERR "Can't find NVRAM device\n");
-		return;
-	}
-	nvram_naddrs = dp->n_addrs;
-	is_core_99 = device_is_compatible(dp, "nvram,flash");
-	if (is_core_99) {
 	int i;
 	u32 gen_bank0, gen_bank1;
 
 	if (nvram_naddrs < 1) {
 		printk(KERN_ERR "nvram: no address\n");
-			return;
+		return -EINVAL;
 	}
 	nvram_image = alloc_bootmem(NVRAM_SIZE);
 	if (nvram_image == NULL) {
 		printk(KERN_ERR "nvram: can't allocate ram image\n");
-			return;
+		return -ENOMEM;
 	}
 	nvram_data = ioremap(dp->addrs[0].address, NVRAM_SIZE*2);
 	nvram_naddrs = 1; /* Make sure we get the correct case */
@@ -510,6 +545,9 @@ void __init pmac_nvram_init(void)
 
 	ppc_md.nvram_read_val	= core99_nvram_read_byte;
 	ppc_md.nvram_write_val	= core99_nvram_write_byte;
+	ppc_md.nvram_read	= core99_nvram_read;
+	ppc_md.nvram_write	= core99_nvram_write;
+	ppc_md.nvram_size	= core99_nvram_size;
 	ppc_md.nvram_sync	= core99_nvram_sync;
 	/* 
 	 * Maybe we could be smarter here though making an exclusive list
@@ -525,7 +563,27 @@ void __init pmac_nvram_init(void)
 		core99_erase_bank = sm_erase_bank;
 		core99_write_bank = sm_write_bank;
 	}
-	} else if (_machine == _MACH_chrp && nvram_naddrs == 1) {
+	return 0;
+}
+
+int __init pmac_nvram_init(void)
+{
+	struct device_node *dp;
+	int err = 0;
+
+	nvram_naddrs = 0;
+
+	dp = find_devices("nvram");
+	if (dp == NULL) {
+		printk(KERN_ERR "Can't find NVRAM device\n");
+		return -ENODEV;
+	}
+	nvram_naddrs = dp->n_addrs;
+	is_core_99 = device_is_compatible(dp, "nvram,flash");
+	if (is_core_99)
+		err = core99_nvram_setup(dp);
+#ifdef CONFIG_PPC32
+	else if (_machine == _MACH_chrp && nvram_naddrs == 1) {
 		nvram_data = ioremap(dp->addrs[0].address + isa_mem_base,
 				     dp->addrs[0].size);
 		nvram_mult = 1;
@@ -547,11 +605,14 @@ void __init pmac_nvram_init(void)
 		ppc_md.nvram_read_val	= pmu_nvram_read_byte;
 		ppc_md.nvram_write_val	= pmu_nvram_write_byte;
 #endif /* CONFIG_ADB_PMU */
-	} else {
-		printk(KERN_ERR "Don't know how to access NVRAM with %d addresses\n",
-		       nvram_naddrs);
+	}
+#endif
+	else {
+		printk(KERN_ERR "Incompatible type of NVRAM\n");
+		return -ENXIO;
 	}
 	lookup_partitions();
+	return err;
 }
 
 int pmac_get_partition(int partition)
@@ -561,9 +622,9 @@ int pmac_get_partition(int partition)
 
 u8 pmac_xpram_read(int xpaddr)
 {
-	int offset = nvram_partitions[pmac_nvram_XPRAM];
+	int offset = pmac_get_partition(pmac_nvram_XPRAM);
 
-	if (offset < 0)
+	if (offset < 0 || xpaddr < 0 || xpaddr > 0x100)
 		return 0xff;
 
 	return ppc_md.nvram_read_val(xpaddr + offset);
@@ -571,9 +632,9 @@ u8 pmac_xpram_read(int xpaddr)
 
 void pmac_xpram_write(int xpaddr, u8 data)
 {
-	int offset = nvram_partitions[pmac_nvram_XPRAM];
+	int offset = pmac_get_partition(pmac_nvram_XPRAM);
 
-	if (offset < 0)
+	if (offset < 0 || xpaddr < 0 || xpaddr > 0x100)
 		return;
 
 	ppc_md.nvram_write_val(xpaddr + offset, data);

arch/powerpc/platforms/powermac/pic.c

@@ -430,7 +430,6 @@ void __init pmac_pic_init(void)
 
 		printk(KERN_INFO "PowerMac using OpenPIC irq controller at 0x%08x\n",
 		       (unsigned int)irqctrler->addrs[0].address);
-		ppc_md.get_irq = mpic_get_irq;
 		pmac_call_feature(PMAC_FTR_ENABLE_MPIC, irqctrler, 0, 0);
 
 		prom_get_irq_senses(senses, 0, 128);
@@ -483,6 +482,7 @@ void __init pmac_pic_init(void)
 	 * a Grand Central nor an OHare, then it's an Heathrow
 	 * (or Paddington).
 	 */
+	ppc_md.get_irq = pmac_get_irq;
 	if (find_devices("gc"))
 		level_mask[0] = GC_LEVEL_MASK;
 	else if (find_devices("ohare")) {

arch/powerpc/platforms/powermac/pmac.h

@@ -19,7 +19,7 @@ extern int pmac_set_rtc_time(struct rtc_time *);
 extern void pmac_read_rtc_time(void);
 extern void pmac_calibrate_decr(void);
 extern void pmac_pcibios_fixup(void);
-extern void pmac_find_bridges(void);
+extern void pmac_pci_init(void);
 extern unsigned long pmac_ide_get_base(int index);
 extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
 	unsigned long data_port, unsigned long ctrl_port, int *irq);
@@ -41,7 +41,7 @@ extern unsigned long pmac_ide_get_base(int index);
 extern void pmac_ide_init_hwif_ports(hw_regs_t *hw,
 	unsigned long data_port, unsigned long ctrl_port, int *irq);
 
-extern void pmac_nvram_init(void);
+extern int pmac_nvram_init(void);
 
 extern struct hw_interrupt_type pmac_pic;
 

arch/powerpc/platforms/powermac/time.c

@@ -33,6 +33,7 @@
 #include <asm/machdep.h>
 #include <asm/time.h>
 #include <asm/nvram.h>
+#include <asm/smu.h>
 
 #undef DEBUG
 
@@ -68,8 +69,8 @@
 
 long __init pmac_time_init(void)
 {
-#ifdef CONFIG_NVRAM
 	s32 delta = 0;
+#ifdef CONFIG_NVRAM
 	int dst;
 	
 	delta = ((s32)pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x9)) << 16;
@@ -80,110 +81,181 @@ long __init pmac_time_init(void)
 	dst = ((pmac_xpram_read(PMAC_XPRAM_MACHINE_LOC + 0x8) & 0x80) != 0);
 	printk("GMT Delta read from XPRAM: %d minutes, DST: %s\n", delta/60,
 		dst ? "on" : "off");
-	return delta;
-#else
-	return 0;
 #endif
+	return delta;
 }
 
-unsigned long pmac_get_boot_time(void)
+static void to_rtc_time(unsigned long now, struct rtc_time *tm)
+{
+	to_tm(now, tm);
+	tm->tm_year -= 1900;
+	tm->tm_mon -= 1;
+}
+
+static unsigned long from_rtc_time(struct rtc_time *tm)
+{
+	return mktime(tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
+		      tm->tm_hour, tm->tm_min, tm->tm_sec);
+}
+
+#ifdef CONFIG_ADB_CUDA
+static unsigned long cuda_get_time(void)
 {
-#if defined(CONFIG_ADB_CUDA) || defined(CONFIG_ADB_PMU)
 	struct adb_request req;
 	unsigned long now;
-#endif
 
-	/* Get the time from the RTC */
-	switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
-	case SYS_CTRLER_CUDA:
 	if (cuda_request(&req, NULL, 2, CUDA_PACKET, CUDA_GET_TIME) < 0)
 		return 0;
 	while (!req.complete)
 		cuda_poll();
 	if (req.reply_len != 7)
-			printk(KERN_ERR "pmac_get_rtc_time: got %d byte reply\n",
+		printk(KERN_ERR "cuda_get_time: got %d byte reply\n",
 		       req.reply_len);
 	now = (req.reply[3] << 24) + (req.reply[4] << 16)
 		+ (req.reply[5] << 8) + req.reply[6];
+	if (now < RTC_OFFSET)
+		return 0;
 	return now - RTC_OFFSET;
-#endif /* CONFIG_ADB_CUDA */
+}
+
+#define cuda_get_rtc_time(tm)	to_rtc_time(cuda_get_time(), (tm))
+
+static int cuda_set_rtc_time(struct rtc_time *tm)
+{
+	unsigned int nowtime;
+	struct adb_request req;
+
+	nowtime = from_rtc_time(tm) + RTC_OFFSET;
+	if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
+			 nowtime >> 24, nowtime >> 16, nowtime >> 8,
+			 nowtime) < 0)
+		return -ENXIO;
+	while (!req.complete)
+		cuda_poll();
+	if ((req.reply_len != 3) && (req.reply_len != 7))
+		printk(KERN_ERR "cuda_set_rtc_time: got %d byte reply\n",
+		       req.reply_len);
+	return 0;
+}
+
+#else
+#define cuda_get_time()		0
+#define cuda_get_rtc_time(tm)
+#define cuda_set_rtc_time(tm)	0
+#endif
+
 #ifdef CONFIG_ADB_PMU
-	case SYS_CTRLER_PMU:
+static unsigned long pmu_get_time(void)
+{
+	struct adb_request req;
+	unsigned long now;
+
 	if (pmu_request(&req, NULL, 1, PMU_READ_RTC) < 0)
 		return 0;
-		while (!req.complete)
-			pmu_poll();
+	pmu_wait_complete(&req);
 	if (req.reply_len != 4)
-			printk(KERN_ERR "pmac_get_rtc_time: got %d byte reply\n",
+		printk(KERN_ERR "pmu_get_time: got %d byte reply from PMU\n",
 		       req.reply_len);
 	now = (req.reply[0] << 24) + (req.reply[1] << 16)
 		+ (req.reply[2] << 8) + req.reply[3];
-		return now - RTC_OFFSET;
-#endif /* CONFIG_ADB_PMU */
-	default: ;
-	}
+	if (now < RTC_OFFSET)
 		return 0;
+	return now - RTC_OFFSET;
 }
 
-void pmac_get_rtc_time(struct rtc_time *tm)
+#define pmu_get_rtc_time(tm)	to_rtc_time(pmu_get_time(), (tm))
+
+static int pmu_set_rtc_time(struct rtc_time *tm)
 {
-	unsigned long now;
+	unsigned int nowtime;
+	struct adb_request req;
 
-	now = pmac_get_boot_time();
-	to_tm(now, tm);
-	tm->tm_year -= 1900;
-	tm->tm_mon -= 1;		/* month is 0-based */
+	nowtime = from_rtc_time(tm) + RTC_OFFSET;
+	if (pmu_request(&req, NULL, 5, PMU_SET_RTC, nowtime >> 24,
+			nowtime >> 16, nowtime >> 8, nowtime) < 0)
+		return -ENXIO;
+	pmu_wait_complete(&req);
+	if (req.reply_len != 0)
+		printk(KERN_ERR "pmu_set_rtc_time: %d byte reply from PMU\n",
+		       req.reply_len);
+	return 0;
 }
 
-int pmac_set_rtc_time(struct rtc_time *tm)
-{
-	unsigned long nowtime;
-#if defined(CONFIG_ADB_CUDA) || defined(CONFIG_ADB_PMU)
-	struct adb_request req;
+#else
+#define pmu_get_time()		0
+#define pmu_get_rtc_time(tm)
+#define pmu_set_rtc_time(tm)	0
 #endif
 
-	nowtime = mktime(tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
-			 tm->tm_hour, tm->tm_min, tm->tm_sec);
-	nowtime += RTC_OFFSET;
+#ifdef CONFIG_PMAC_SMU
+static unsigned long smu_get_time(void)
+{
+	struct rtc_time tm;
 
+	if (smu_get_rtc_time(&tm, 1))
+		return 0;
+	return from_rtc_time(&tm);
+}
+
+#else
+#define smu_get_time()			0
+#define smu_get_rtc_time(tm, spin)
+#define smu_set_rtc_time(tm, spin)	0
+#endif
+
+unsigned long pmac_get_boot_time(void)
+{
+	/* Get the time from the RTC, used only at boot time */
 	switch (sys_ctrler) {
-#ifdef CONFIG_ADB_CUDA
 	case SYS_CTRLER_CUDA:
-		if (cuda_request(&req, NULL, 6, CUDA_PACKET, CUDA_SET_TIME,
-				 nowtime >> 24, nowtime >> 16, nowtime >> 8,
-				 nowtime) < 0)
-			return 0;
-		while (!req.complete)
-			cuda_poll();
-		if ((req.reply_len != 3) && (req.reply_len != 7))
-			printk(KERN_ERR "pmac_set_rtc_time: got %d byte reply\n",
-			       req.reply_len);
-		return 1;
-#endif /* CONFIG_ADB_CUDA */
-#ifdef CONFIG_ADB_PMU
+		return cuda_get_time();
 	case SYS_CTRLER_PMU:
-		if (pmu_request(&req, NULL, 5, PMU_SET_RTC,
-				nowtime >> 24, nowtime >> 16, nowtime >> 8, nowtime) < 0)
-			return 0;
-		while (!req.complete)
-			pmu_poll();
-		if (req.reply_len != 0)
-			printk(KERN_ERR "pmac_set_rtc_time: got %d byte reply\n",
-			       req.reply_len);
-		return 1;
-#endif /* CONFIG_ADB_PMU */
+		return pmu_get_time();
+	case SYS_CTRLER_SMU:
+		return smu_get_time();
 	default:
 		return 0;
 	}
 }
 
+void pmac_get_rtc_time(struct rtc_time *tm)
+{
+	/* Get the time from the RTC, used only at boot time */
+	switch (sys_ctrler) {
+	case SYS_CTRLER_CUDA:
+		cuda_get_rtc_time(tm);
+		break;
+	case SYS_CTRLER_PMU:
+		pmu_get_rtc_time(tm);
+		break;
+	case SYS_CTRLER_SMU:
+		smu_get_rtc_time(tm, 1);
+		break;
+	default:
+		;
+	}
+}
+
+int pmac_set_rtc_time(struct rtc_time *tm)
+{
+	switch (sys_ctrler) {
+	case SYS_CTRLER_CUDA:
+		return cuda_set_rtc_time(tm);
+	case SYS_CTRLER_PMU:
+		return pmu_set_rtc_time(tm);
+	case SYS_CTRLER_SMU:
+		return smu_set_rtc_time(tm, 1);
+	default:
+		return -ENODEV;
+	}
+}
+
+#ifdef CONFIG_PPC32
 /*
  * Calibrate the decrementer register using VIA timer 1.
  * This is used both on powermacs and CHRP machines.
  */
-int __init
-via_calibrate_decr(void)
+int __init via_calibrate_decr(void)
 {
 	struct device_node *vias;
 	volatile unsigned char __iomem *via;
@@ -217,15 +289,12 @@ via_calibrate_decr(void)
 	dend = get_dec();
 
 	ppc_tb_freq = (dstart - dend) * 100 / 6;
-	tb_ticks_per_jiffy = (dstart - dend) / ((6 * HZ)/100);
-
-	printk(KERN_INFO "via_calibrate_decr: ticks per jiffy = %lu (%u ticks)\n",
-	       tb_ticks_per_jiffy, dstart - dend);
 
 	iounmap(via);
 	
 	return 1;
 }
+#endif
 
 #ifdef CONFIG_PM
 /*
@@ -262,19 +331,17 @@ static struct pmu_sleep_notifier time_sleep_notifier = {
 
 /*
  * Query the OF and get the decr frequency.
- * This was taken from the pmac time_init() when merging the prep/pmac
- * time functions.
  */
-void __init
-pmac_calibrate_decr(void)
+void __init pmac_calibrate_decr(void)
 {
-	struct device_node *cpu;
-	unsigned int freq, *fp;
-
 #ifdef CONFIG_PM
+	/* XXX why here? */
 	pmu_register_sleep_notifier(&time_sleep_notifier);
 #endif /* CONFIG_PM */
 
+	generic_calibrate_decr();
+
+#ifdef CONFIG_PPC32
 	/* We assume MacRISC2 machines have correct device-tree
 	 * calibration. That's better since the VIA itself seems
 	 * to be slightly off. --BenH
@@ -293,18 +360,5 @@ pmac_calibrate_decr(void)
 	if (machine_is_compatible("PowerMac3,5"))
 		if (via_calibrate_decr())
 			return;
-	/*
-	 * The cpu node should have a timebase-frequency property
-	 * to tell us the rate at which the decrementer counts.
-	 */
-	cpu = find_type_devices("cpu");
-	if (cpu == 0)
-		panic("can't find cpu node in time_init");
-	fp = (unsigned int *) get_property(cpu, "timebase-frequency", NULL);
-	if (fp == 0)
-		panic("can't get cpu timebase frequency");
-	freq = *fp;
-	printk("time_init: decrementer frequency = %u.%.6u MHz\n",
-	       freq/1000000, freq%1000000);
-	ppc_tb_freq = freq;
+#endif
 }

include/asm-powerpc/machdep.h

@@ -119,6 +119,8 @@ struct machdep_calls {
 	/* Interface for platform error logging */
 	void 		(*log_error)(char *buf, unsigned int err_type, int fatal);
 
+	unsigned char 	(*nvram_read_val)(int addr);
+	void		(*nvram_write_val)(int addr, unsigned char val);
 	ssize_t		(*nvram_write)(char *buf, size_t count, loff_t *index);
 	ssize_t		(*nvram_read)(char *buf, size_t count, loff_t *index);	
 	ssize_t		(*nvram_size)(void);		
@@ -165,15 +167,11 @@ struct machdep_calls {
 	unsigned long	heartbeat_reset;
 	unsigned long	heartbeat_count;
 
-	unsigned long	(*find_end_of_memory)(void);
 	void		(*setup_io_mappings)(void);
 
 	void		(*early_serial_map)(void);
 	void		(*kgdb_map_scc)(void);
 
-	unsigned char 	(*nvram_read_val)(int addr);
-	void		(*nvram_write_val)(int addr, unsigned char val);
-
 	/*
 	 * optional PCI "hooks"
 	 */

include/asm-ppc64/system.h

@@ -148,6 +148,8 @@ struct thread_struct;
 extern struct task_struct * _switch(struct thread_struct *prev,
 				    struct thread_struct *next);
 
+extern int powersave_nap;	/* set if nap mode can be used in idle loop */
+
 /*
  * Atomic exchange
  *

include/asm-ppc64/udbg.h

@@ -28,4 +28,7 @@ extern unsigned long udbg_ifdebug(unsigned long flags);
 extern void __init ppcdbg_initialize(void);
 
 extern void udbg_init_uart(void __iomem *comport, unsigned int speed);
+
+struct device_node;
+extern void udbg_init_scc(struct device_node *np);
 #endif