Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (74 commits)
  Blackfin serial driver: pending a unique anomaly id, tie the break flood issue to ANOMALY_05000230
  blackfin enable arbitary speed serial setting
  Blackfin arch: Remove cruft - CONFIG_DEBUG_SERIAL_EARLY_INIT and DEBUG_KERNEL_START
  Blackfin arch: fix typo in register name
  Blackfin arch: trim the Blackfin arch MAINTAINERS list
  Blackfin arch: fix bug libstdc++ calling writev with an iovec containing { NULL, 0 } fails on Blackfin
  Blackfin arch: Export strcpy - occasionally get module link failures otherwise
  Blackfin arch: the load address is not safe to point to as a workaround for ANOMALY 05000281
  Blackfin arch: show_mem can not be marked as init, since it is called during OOM condition
  Blackfin arch: flush/inv the correct range when using write back cache and fix bugs find by dmacopy
  Blackfin arch: update kgdb patch
  Blackfin arch: Comply with revised Anomaly Workarounds for BF533 05000311 and BF561 05000323
  Blackfin arch: Print out debug info, as early as possible
  Blackfin arch: Enable earlyprintk earlier - so any error after our interrupt tables are set up will print out
  Blackfin arch: fix endless loop bug when a double fault happens
  Blackfin arch: Initial patch to add earlyprintk support
  Blackfin arch: add TWIx_REGBASE and SPIx_REGBASE to specific CPU header files, use the new REGBASE for board platform resources
  Blackfin arch: modify the insX/outsX and dma_insX/dma_outsX to be compatible with other archs
  Blackfin arch: add more common defines for output sections
  Blackfin arch: cleanup IO and DMA_IO API function definitions according to other arches
  ...

Documentation/kernel-parameters.txt

@@ -35,6 +35,7 @@ parameter is applicable:
 	APIC	APIC support is enabled.
 	APM	Advanced Power Management support is enabled.
 	AX25	Appropriate AX.25 support is enabled.
+	BLACKFIN Blackfin architecture is enabled.
 	DRM	Direct Rendering Management support is enabled.
 	EDD	BIOS Enhanced Disk Drive Services (EDD) is enabled
 	EFI	EFI Partitioning (GPT) is enabled
@@ -550,7 +551,7 @@ and is between 256 and 4096 characters. It is defined in the file
 
 	dtc3181e=	[HW,SCSI]
 
-	earlyprintk=	[X86-32,X86-64,SH]
+	earlyprintk=	[X86-32,X86-64,SH,BLACKFIN]
 			earlyprintk=vga
 			earlyprintk=serial[,ttySn[,baudrate]]
 

MAINTAINERS

@@ -718,34 +718,8 @@ M:	rpurdie@rpsys.net
 S:	Maintained
 
 BLACKFIN ARCHITECTURE
-P:	Aubrey Li
-M:	aubrey.li@analog.com
-P:	Bernd Schmidt
-M:	bernd.schmidt@analog.com
 P:	Bryan Wu
 M:	bryan.wu@analog.com
-P:	Grace Pan
-M:	grace.pan@analog.com
-P:	Marc Hoffman
-M:	marc.hoffman@analog.com
-P:	Michael Hennerich
-M:	michael.hennerich@analog.com
-P:	Mike Frysinger
-M:	michael.frysinger@analog.com
-P:	Jerry Zeng
-M:	jerry.zeng@analog.com
-P:	Jie Zhang
-M:	jie.zhang@analog.com
-P:	Robin Getz
-M:	robin.getz@analog.com
-P:	Roy Huang
-M:	roy.huang@analog.com
-P:	Sonic Zhang
-M:	sonic.zhang@analog.com
-P:	Vivi Li
-M:	vivi.li@analog.com
-P:	Yi Li
-M:	yi.li@analog.com
 L:	uclinux-dist-devel@blackfin.uclinux.org (subscribers-only)
 W:	http://blackfin.uclinux.org
 S:	Supported

arch/blackfin/kernel/Makefile

@@ -7,11 +7,10 @@ extra-y := init_task.o vmlinux.lds
 obj-y := \
 	entry.o process.o bfin_ksyms.o ptrace.o setup.o signal.o \
 	sys_bfin.o time.o traps.o irqchip.o dma-mapping.o flat.o \
-	fixed_code.o cplbinit.o cacheinit.o
+	fixed_code.o cplbinit.o cacheinit.o reboot.o bfin_gpio.o
 
-obj-$(CONFIG_BF53x)		     += bfin_gpio.o
-obj-$(CONFIG_BF561)		     += bfin_gpio.o
 obj-$(CONFIG_MODULES)                += module.o
 obj-$(CONFIG_BFIN_DMA_5XX)           += bfin_dma_5xx.o
 obj-$(CONFIG_DUAL_CORE_TEST_MODULE)  += dualcore_test.o
 obj-$(CONFIG_KGDB)                   += kgdb.o
+obj-$(CONFIG_EARLY_PRINTK)           += early_printk.o

arch/blackfin/kernel/bfin_dma_5xx.c

@@ -73,6 +73,11 @@ static int __init blackfin_dma_init(void)
 	/* Mark MEMDMA Channel 0 as requested since we're using it internally */
 	dma_ch[CH_MEM_STREAM0_DEST].chan_status = DMA_CHANNEL_REQUESTED;
 	dma_ch[CH_MEM_STREAM0_SRC].chan_status = DMA_CHANNEL_REQUESTED;
+
+#if defined(CONFIG_DEB_DMA_URGENT)
+	bfin_write_EBIU_DDRQUE(bfin_read_EBIU_DDRQUE()
+			 | DEB1_URGENT | DEB2_URGENT | DEB3_URGENT);
+#endif
 	return 0;
 }
 
@@ -265,10 +270,23 @@ void set_dma_next_desc_addr(unsigned int channel, unsigned long addr)
 
 	dma_ch[channel].regs->next_desc_ptr = addr;
 	SSYNC();
-	pr_debug("set_dma_start_addr() : END\n");
+	pr_debug("set_dma_next_desc_addr() : END\n");
 }
 EXPORT_SYMBOL(set_dma_next_desc_addr);
 
+void set_dma_curr_desc_addr(unsigned int channel, unsigned long addr)
+{
+	pr_debug("set_dma_curr_desc_addr() : BEGIN \n");
+
+	BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+	       && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+	dma_ch[channel].regs->curr_desc_ptr = addr;
+	SSYNC();
+	pr_debug("set_dma_curr_desc_addr() : END\n");
+}
+EXPORT_SYMBOL(set_dma_curr_desc_addr);
+
 void set_dma_x_count(unsigned int channel, unsigned short x_count)
 {
 	BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
@@ -345,6 +363,16 @@ void set_dma_sg(unsigned int channel, struct dmasg *sg, int nr_sg)
 }
 EXPORT_SYMBOL(set_dma_sg);
 
+void set_dma_curr_addr(unsigned int channel, unsigned long addr)
+{
+	BUG_ON(!(dma_ch[channel].chan_status != DMA_CHANNEL_FREE
+	       && channel < MAX_BLACKFIN_DMA_CHANNEL));
+
+	dma_ch[channel].regs->curr_addr_ptr = addr;
+	SSYNC();
+}
+EXPORT_SYMBOL(set_dma_curr_addr);
+
 /*------------------------------------------------------------------------------
  *	Get the DMA status of a specific DMA channel from the system.
  *-----------------------------------------------------------------------------*/
@@ -408,6 +436,10 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
 		blackfin_dcache_flush_range((unsigned int)src,
 					    (unsigned int)(src + size));
 
+	if ((unsigned long)dest < memory_end)
+		blackfin_dcache_invalidate_range((unsigned int)dest,
+						 (unsigned int)(dest + size));
+
 	bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
 
 	if ((unsigned long)src < (unsigned long)dest)
@@ -515,6 +547,8 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
 		}
 	}
 
+	SSYNC();
+
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE))
 		;
 
@@ -524,9 +558,6 @@ static void *__dma_memcpy(void *dest, const void *src, size_t size)
 	bfin_write_MDMA_S0_CONFIG(0);
 	bfin_write_MDMA_D0_CONFIG(0);
 
-	if ((unsigned long)dest < memory_end)
-		blackfin_dcache_invalidate_range((unsigned int)dest,
-						 (unsigned int)(dest + size));
 	local_irq_restore(flags);
 
 	return dest;
@@ -555,13 +586,14 @@ void *safe_dma_memcpy(void *dest, const void *src, size_t size)
 }
 EXPORT_SYMBOL(safe_dma_memcpy);
 
-void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsb(unsigned long addr, const void *buf, unsigned short len)
 {
 	unsigned long flags;
 
 	local_irq_save(flags);
 
-	blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len);
+	blackfin_dcache_flush_range((unsigned int)buf,
+			 (unsigned int)(buf) + len);
 
 	bfin_write_MDMA_D0_START_ADDR(addr);
 	bfin_write_MDMA_D0_X_COUNT(len);
@@ -576,6 +608,8 @@ void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
 	bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_8);
 	bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_8);
 
+	SSYNC();
+
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
 
 	bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -588,10 +622,13 @@ void dma_outsb(void __iomem *addr, const void *buf, unsigned short len)
 EXPORT_SYMBOL(dma_outsb);
 
 
-void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insb(unsigned long addr, void *buf, unsigned short len)
 {
 	unsigned long flags;
 
+	blackfin_dcache_invalidate_range((unsigned int)buf,
+			 (unsigned int)(buf) + len);
+
 	local_irq_save(flags);
 	bfin_write_MDMA_D0_START_ADDR(buf);
 	bfin_write_MDMA_D0_X_COUNT(len);
@@ -606,7 +643,7 @@ void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
 	bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_8);
 	bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_8);
 
-	blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+	SSYNC();
 
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
 
@@ -619,13 +656,14 @@ void dma_insb(const void __iomem *addr, void *buf, unsigned short len)
 }
 EXPORT_SYMBOL(dma_insb);
 
-void dma_outsw(void __iomem *addr, const void  *buf, unsigned short len)
+void dma_outsw(unsigned long addr, const void  *buf, unsigned short len)
 {
 	unsigned long flags;
 
 	local_irq_save(flags);
 
-	blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len);
+	blackfin_dcache_flush_range((unsigned int)buf,
+			 (unsigned int)(buf) + len * sizeof(short));
 
 	bfin_write_MDMA_D0_START_ADDR(addr);
 	bfin_write_MDMA_D0_X_COUNT(len);
@@ -640,6 +678,8 @@ void dma_outsw(void __iomem *addr, const void  *buf, unsigned short len)
 	bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16);
 	bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_16);
 
+	SSYNC();
+
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
 
 	bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -651,10 +691,13 @@ void dma_outsw(void __iomem *addr, const void  *buf, unsigned short len)
 }
 EXPORT_SYMBOL(dma_outsw);
 
-void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insw(unsigned long addr, void *buf, unsigned short len)
 {
 	unsigned long flags;
 
+	blackfin_dcache_invalidate_range((unsigned int)buf,
+			 (unsigned int)(buf) + len * sizeof(short));
+
 	local_irq_save(flags);
 
 	bfin_write_MDMA_D0_START_ADDR(buf);
@@ -670,7 +713,7 @@ void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
 	bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_16);
 	bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_16);
 
-	blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+	SSYNC();
 
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
 
@@ -683,13 +726,14 @@ void dma_insw(const void __iomem *addr, void *buf, unsigned short len)
 }
 EXPORT_SYMBOL(dma_insw);
 
-void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
+void dma_outsl(unsigned long addr, const void *buf, unsigned short len)
 {
 	unsigned long flags;
 
 	local_irq_save(flags);
 
-	blackfin_dcache_flush_range((unsigned int)buf, (unsigned int)(buf) + len);
+	blackfin_dcache_flush_range((unsigned int)buf,
+			 (unsigned int)(buf) + len * sizeof(long));
 
 	bfin_write_MDMA_D0_START_ADDR(addr);
 	bfin_write_MDMA_D0_X_COUNT(len);
@@ -704,6 +748,8 @@ void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
 	bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_32);
 	bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_32);
 
+	SSYNC();
+
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
 
 	bfin_write_MDMA_D0_IRQ_STATUS(DMA_DONE | DMA_ERR);
@@ -715,10 +761,13 @@ void dma_outsl(void __iomem *addr, const void *buf, unsigned short len)
 }
 EXPORT_SYMBOL(dma_outsl);
 
-void dma_insl(const void __iomem *addr, void *buf, unsigned short len)
+void dma_insl(unsigned long addr, void *buf, unsigned short len)
 {
 	unsigned long flags;
 
+	blackfin_dcache_invalidate_range((unsigned int)buf,
+			 (unsigned int)(buf) + len * sizeof(long));
+
 	local_irq_save(flags);
 
 	bfin_write_MDMA_D0_START_ADDR(buf);
@@ -734,7 +783,7 @@ void dma_insl(const void __iomem *addr, void *buf, unsigned short len)
 	bfin_write_MDMA_S0_CONFIG(DMAEN | WDSIZE_32);
 	bfin_write_MDMA_D0_CONFIG(WNR | DI_EN | DMAEN | WDSIZE_32);
 
-	blackfin_dcache_invalidate_range((unsigned int)buf, (unsigned int)(buf) + len);
+	SSYNC();
 
 	while (!(bfin_read_MDMA_D0_IRQ_STATUS() & DMA_DONE));
 

arch/blackfin/kernel/bfin_ksyms.c

@@ -60,6 +60,7 @@ EXPORT_SYMBOL(csum_partial_copy);
  * their interface isn't gonna change any time soon now, so
  * it's OK to leave it out of version control.
  */
+EXPORT_SYMBOL(strcpy);
 EXPORT_SYMBOL(memcpy);
 EXPORT_SYMBOL(memset);
 EXPORT_SYMBOL(memcmp);

arch/blackfin/kernel/cacheinit.c

@@ -21,9 +21,10 @@
 
 #include <asm/cacheflush.h>
 #include <asm/blackfin.h>
+#include <asm/cplb.h>
 #include <asm/cplbinit.h>
 
-#if defined(CONFIG_BLKFIN_CACHE)
+#if defined(CONFIG_BFIN_ICACHE)
 void bfin_icache_init(void)
 {
 	unsigned long *table = icplb_table;
@@ -44,7 +45,7 @@ void bfin_icache_init(void)
 }
 #endif
 
-#if defined(CONFIG_BLKFIN_DCACHE)
+#if defined(CONFIG_BFIN_DCACHE)
 void bfin_dcache_init(void)
 {
 	unsigned long *table = dcplb_table;

arch/blackfin/kernel/cplbinit.c

@@ -23,6 +23,7 @@
 #include <linux/module.h>
 
 #include <asm/blackfin.h>
+#include <asm/cplb.h>
 #include <asm/cplbinit.h>
 
 u_long icplb_table[MAX_CPLBS+1];
@@ -56,7 +57,7 @@ struct s_cplb {
 	struct cplb_tab switch_d;
 };
 
-#if defined(CONFIG_BLKFIN_DCACHE) || defined(CONFIG_BLKFIN_CACHE)
+#if defined(CONFIG_BFIN_DCACHE) || defined(CONFIG_BFIN_ICACHE)
 static struct cplb_desc cplb_data[] = {
 	{
 		.start = 0,
@@ -230,8 +231,8 @@ static void __fill_code_cplbtab(struct cplb_tab *t, int i, u32 a_start, u32 a_en
 				cplb_data[i].psize,
 				cplb_data[i].i_conf);
 	} else {
-#if (defined(CONFIG_BLKFIN_CACHE) && defined(ANOMALY_05000263))
-		if (i == SDRAM_KERN) {
+#if defined(CONFIG_BFIN_ICACHE)
+		if (ANOMALY_05000263 && i == SDRAM_KERN) {
 			fill_cplbtab(t,
 					cplb_data[i].start,
 					cplb_data[i].end,

arch/blackfin/kernel/early_printk.c

+/*
+ * File:         arch/blackfin/kernel/early_printk.c
+ * Based on:     arch/x86_64/kernel/early_printk.c
+ * Author:       Robin Getz <rgetz@blackfin.uclinux.org
+ *
+ * Created:      14Aug2007
+ * Description:  allow a console to be used for early printk
+ *
+ * Modified:
+ *               Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/serial_core.h>
+#include <linux/console.h>
+#include <linux/string.h>
+#include <asm/blackfin.h>
+#include <asm/irq_handler.h>
+#include <asm/early_printk.h>
+
+#ifdef CONFIG_SERIAL_BFIN
+extern struct console *bfin_earlyserial_init(unsigned int port,
+						unsigned int cflag);
+#endif
+
+static struct console *early_console;
+
+/* Default console */
+#define DEFAULT_PORT 0
+#define DEFAULT_CFLAG CS8|B57600
+
+/* Default console for early crashes */
+#define DEFAULT_EARLY_PORT "serial,uart0,57600"
+
+#ifdef CONFIG_SERIAL_CORE
+/* What should get here is "0,57600" */
+static struct console * __init earlyserial_init(char *buf)
+{
+	int baud, bit;
+	char parity;
+	unsigned int serial_port = DEFAULT_PORT;
+	unsigned int cflag = DEFAULT_CFLAG;
+
+	serial_port = simple_strtoul(buf, &buf, 10);
+	buf++;
+
+	cflag = 0;
+	baud = simple_strtoul(buf, &buf, 10);
+	switch (baud) {
+	case 1200:
+		cflag |= B1200;
+		break;
+	case 2400:
+		cflag |= B2400;
+		break;
+	case 4800:
+		cflag |= B4800;
+		break;
+	case 9600:
+		cflag |= B9600;
+		break;
+	case 19200:
+		cflag |= B19200;
+		break;
+	case 38400:
+		cflag |= B38400;
+		break;
+	case 115200:
+		cflag |= B115200;
+		break;
+	default:
+		cflag |= B57600;
+	}
+
+	parity = buf[0];
+	buf++;
+	switch (parity) {
+	case 'e':
+		cflag |= PARENB;
+		break;
+	case 'o':
+		cflag |= PARODD;
+		break;
+	}
+
+	bit = simple_strtoul(buf, &buf, 10);
+	switch (bit) {
+	case 5:
+		cflag |= CS5;
+		break;
+	case 6:
+		cflag |= CS5;
+		break;
+	case 7:
+		cflag |= CS5;
+		break;
+	default:
+		cflag |= CS8;
+	}
+
+#ifdef CONFIG_SERIAL_BFIN
+	return bfin_earlyserial_init(serial_port, cflag);
+#else
+	return NULL;
+#endif
+
+}
+#endif
+
+int __init setup_early_printk(char *buf)
+{
+
+	/* Crashing in here would be really bad, so check both the var
+	   and the pointer before we start using it
+	 */
+	if (!buf)
+		return 0;
+
+	if (!*buf)
+		return 0;
+
+	if (early_console != NULL)
+		return 0;
+
+#ifdef CONFIG_SERIAL_BFIN
+	/* Check for Blackfin Serial */
+	if (!strncmp(buf, "serial,uart", 11)) {
+		buf += 11;
+		early_console = earlyserial_init(buf);
+	}
+#endif
+#ifdef CONFIG_FB
+		/* TODO: add framebuffer console support */
+#endif
+
+	if (likely(early_console)) {
+		early_console->flags |= CON_BOOT;
+
+		register_console(early_console);
+		printk(KERN_INFO "early printk enabled on %s%d\n",
+			early_console->name,
+			early_console->index);
+	}
+
+	return 0;
+}
+
+/*
+ * Set up a temporary Event Vector Table, so if something bad happens before
+ * the kernel is fully started, it doesn't vector off into somewhere we don't
+ * know
+ */
+
+asmlinkage void __init init_early_exception_vectors(void)
+{
+	SSYNC();
+
+	/* cannot program in software:
+	 * evt0 - emulation (jtag)
+	 * evt1 - reset
+	 */
+	bfin_write_EVT2(early_trap);
+	bfin_write_EVT3(early_trap);
+	bfin_write_EVT5(early_trap);
+	bfin_write_EVT6(early_trap);
+	bfin_write_EVT7(early_trap);
+	bfin_write_EVT8(early_trap);
+	bfin_write_EVT9(early_trap);
+	bfin_write_EVT10(early_trap);
+	bfin_write_EVT11(early_trap);
+	bfin_write_EVT12(early_trap);
+	bfin_write_EVT13(early_trap);
+	bfin_write_EVT14(early_trap);
+	bfin_write_EVT15(early_trap);
+	CSYNC();
+
+	/* Set all the return from interupt, exception, NMI to a known place
+	 * so if we do a RETI, RETX or RETN by mistake - we go somewhere known
+	 * Note - don't change RETS - we are in a subroutine, or
+	 * RETE - since it might screw up if emulator is attached
+	 */
+	asm("\tRETI = %0; RETX = %0; RETN = %0;\n"
+		: : "p"(early_trap));
+
+}
+
+asmlinkage void __init early_trap_c(struct pt_regs *fp, void *retaddr)
+{
+	/* This can happen before the uart is initialized, so initialize
+	 * the UART now
+	 */
+	if (likely(early_console == NULL))
+		setup_early_printk(DEFAULT_EARLY_PORT);
+
+	dump_bfin_regs(fp, retaddr);
+	dump_bfin_trace_buffer();
+
+	panic("Died early");
+}
+
+early_param("earlyprintk", setup_early_printk);

arch/blackfin/kernel/irqchip.c

@@ -34,6 +34,7 @@
 #include <linux/kallsyms.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <asm/trace.h>
 
 static unsigned long irq_err_count;
 static spinlock_t irq_controller_lock;
@@ -97,9 +98,8 @@ int show_interrupts(struct seq_file *p, void *v)
  */
 
 #ifdef CONFIG_DO_IRQ_L1
-asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)__attribute__((l1_text));
+__attribute__((l1_text))
 #endif
-
 asmlinkage void asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
 {
 	struct pt_regs *old_regs;
@@ -144,4 +144,12 @@ void __init init_IRQ(void)
 	}
 
 	init_arch_irq();
+
+#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND
+	/* Now that evt_ivhw is set up, turn this on */
+	trace_buff_offset = 0;
+	bfin_write_TBUFCTL(BFIN_TRACE_ON);
+	printk(KERN_INFO "Hardware Trace expanded to %ik\n",
+	  1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN);
+#endif
 }

arch/blackfin/kernel/process.c

@@ -134,31 +134,6 @@ void cpu_idle(void)
 	}
 }
 
-void machine_restart(char *__unused)
-{
-#if defined(CONFIG_BLKFIN_CACHE)
-	bfin_write_IMEM_CONTROL(0x01);
-	SSYNC();
-#endif
-	bfin_reset();
-	/* Dont do anything till the reset occurs */
-	while (1) {
-		SSYNC();
-	}
-}
-
-void machine_halt(void)
-{
-	for (;;)
-		asm volatile ("idle");
-}
-
-void machine_power_off(void)
-{
-	for (;;)
-		asm volatile ("idle");
-}
-
 void show_regs(struct pt_regs *regs)
 {
 	printk(KERN_NOTICE "\n");
@@ -420,7 +395,8 @@ void finish_atomic_sections (struct pt_regs *regs)
 #if defined(CONFIG_ACCESS_CHECK)
 int _access_ok(unsigned long addr, unsigned long size)
 {
-
+	if (size == 0)
+		return 1;
 	if (addr > (addr + size))
 		return 0;
 	if (segment_eq(get_fs(), KERNEL_DS))

arch/blackfin/kernel/ptrace.c

@@ -44,6 +44,7 @@
 #include <asm/processor.h>
 #include <asm/asm-offsets.h>
 #include <asm/dma.h>
+#include <asm/fixed_code.h>
 
 #define MAX_SHARED_LIBS 3
 #define TEXT_OFFSET 0
@@ -169,6 +170,9 @@ static inline int is_user_addr_valid(struct task_struct *child,
 		    && start + len <= (unsigned long)sraml->addr + sraml->length)
 			return 0;
 
+	if (start >= FIXED_CODE_START && start + len <= FIXED_CODE_END)
+		return 0;
+
 	return -EIO;
 }
 
@@ -215,8 +219,12 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 				copied = sizeof(tmp);
 			} else
 #endif
-			copied =
-			    access_process_vm(child, addr + add, &tmp,
+			if (addr + add >= FIXED_CODE_START
+			    && addr + add + sizeof(tmp) <= FIXED_CODE_END) {
+				memcpy(&tmp, (const void *)(addr + add), sizeof(tmp));
+				copied = sizeof(tmp);
+			} else
+				copied = access_process_vm(child, addr + add, &tmp,
 							   sizeof(tmp), 0);
 			pr_debug("ptrace: copied size %d [0x%08lx]\n", copied, tmp);
 			if (copied != sizeof(tmp))
@@ -281,8 +289,12 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 				copied = sizeof(data);
 			} else
 #endif
-			copied =
-			    access_process_vm(child, addr + add, &data,
+			if (addr + add >= FIXED_CODE_START
+			    && addr + add + sizeof(data) <= FIXED_CODE_END) {
+				memcpy((void *)(addr + add), &data, sizeof(data));
+				copied = sizeof(data);
+			} else
+				copied = access_process_vm(child, addr + add, &data,
 							   sizeof(data), 1);
 			pr_debug("ptrace: copied size %d\n", copied);
 			if (copied != sizeof(data))

arch/blackfin/kernel/reboot.c

+/*
+ * arch/blackfin/kernel/reboot.c - handle shutdown/reboot
+ *
+ * Copyright 2004-2007 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/interrupt.h>
+#include <asm/bfin-global.h>
+#include <asm/reboot.h>
+#include <asm/system.h>
+
+#if defined(BF537_FAMILY) || defined(BF533_FAMILY)
+#define SYSCR_VAL 	0x0
+#elif defined(BF561_FAMILY)
+#define SYSCR_VAL 	0x20
+#elif defined(BF548_FAMILY)
+#define SYSCR_VAL 	0x10
+#endif
+
+/* A system soft reset makes external memory unusable
+ * so force this function into L1.
+ */
+__attribute__((l1_text))
+void bfin_reset(void)
+{
+	/* force BMODE and disable Core B (as needed) */
+	bfin_write_SYSCR(SYSCR_VAL);
+
+	/* we use asm ssync here because it's save and we save some L1 */
+	asm("ssync;");
+
+	while (1) {
+		/* initiate system soft reset with magic 0x7 */
+		bfin_write_SWRST(0x7);
+		asm("ssync;");
+		/* clear system soft reset */
+		bfin_write_SWRST(0);
+		asm("ssync;");
+		/* issue core reset */
+		asm("raise 1");
+	}
+}
+
+__attribute__((weak))
+void native_machine_restart(char *cmd)
+{
+}
+
+void machine_restart(char *cmd)
+{
+	native_machine_restart(cmd);
+	local_irq_disable();
+	bfin_reset();
+}
+
+__attribute__((weak))
+void native_machine_halt(void)
+{
+	idle_with_irq_disabled();
+}
+
+void machine_halt(void)
+{
+	native_machine_halt();
+}
+
+__attribute__((weak))
+void native_machine_power_off(void)
+{
+	idle_with_irq_disabled();
+}
+
+void machine_power_off(void)
+{
+	native_machine_power_off();
+}

arch/blackfin/kernel/vmlinux.lds.S

@@ -49,7 +49,8 @@ SECTIONS
 		TEXT_TEXT
 		SCHED_TEXT
 		LOCK_TEXT
-		*(.text.lock)
+		KPROBES_TEXT
+		*(.text.*)
 		*(.fixup)
 
 		. = ALIGN(16);
@@ -61,7 +62,7 @@ SECTIONS
 		__etext = .;
 	}
 
-	RODATA
+	RO_DATA(PAGE_SIZE)
 
 	.data :
 	{
@@ -72,50 +73,63 @@ SECTIONS
 		__sdata = .;
 		. = ALIGN(THREAD_SIZE);
 		*(.data.init_task)
-		DATA_DATA
-		CONSTRUCTORS
 
 		. = ALIGN(32);
 		*(.data.cacheline_aligned)
 
+		DATA_DATA
+		*(.data.*)
+		CONSTRUCTORS
+
 		. = ALIGN(THREAD_SIZE);
 		__edata = .;
 	}
 
 	___init_begin = .;
-	.init :
+
+	.init.text :
 	{
 		. = ALIGN(PAGE_SIZE);
 		__sinittext = .;
 		*(.init.text)
 		__einittext = .;
+	}
+	.init.data :
+	{
+		. = ALIGN(16);
 		*(.init.data)
+	}
+	.init.setup :
+	{
 		. = ALIGN(16);
 		___setup_start = .;
 		*(.init.setup)
 		___setup_end = .;
-		___start___param = .;
-		*(__param)
-		___stop___param = .;
+	}
+	.initcall.init :
+	{
 		___initcall_start = .;
 		INITCALLS
 		___initcall_end = .;
+	}
+	.con_initcall.init :
+	{
 		___con_initcall_start = .;
 		*(.con_initcall.init)
 		___con_initcall_end = .;
-		___security_initcall_start = .;
-		*(.security_initcall.init)
-		___security_initcall_end = .;
+	}
+	SECURITY_INIT
+	.init.ramfs :
+	{
 		. = ALIGN(4);
 		___initramfs_start = .;
 		*(.init.ramfs)
 		___initramfs_end = .;
-		. = ALIGN(4);
 	}
 
 	__l1_lma_start = .;
 
-	.text_l1 L1_CODE_START : AT(LOADADDR(.init) + SIZEOF(.init))
+	.text_l1 L1_CODE_START : AT(LOADADDR(.init.ramfs) + SIZEOF(.init.ramfs))
 	{
 		. = ALIGN(4);
 		__stext_l1 = .;
@@ -164,13 +178,19 @@ SECTIONS
 	{
 		. = ALIGN(4);
 		___bss_start = .;
-		*(.bss)
+		*(.bss .bss.*)
 		*(COMMON)
 		. = ALIGN(4);
 		___bss_stop = .;
 		__end = .;
 	}
 
+	STABS_DEBUG
+
+	DWARF_DEBUG
+
+	NOTES
+
 	/DISCARD/ :
 	{
 		*(.exit.text)