Merge git://www.denx.de/git/u-boot

9 files changed, 506 insertions, 304 deletions

diff --git a/cpu/ppc4xx/405gp_pci.c b/cpu/ppc4xx/405gp_pci.c
index 8bf03e1..2837929 100644
--- a/cpu/ppc4xx/405gp_pci.c
+++ b/cpu/ppc4xx/405gp_pci.c
@@ -77,11 +77,21 @@
 #include <asm/processor.h>
 #include <pci.h>
 
+#ifdef CONFIG_PCI
+
 DECLARE_GLOBAL_DATA_PTR;
 
-#if defined(CONFIG_405GP) || defined(CONFIG_405EP)
+/*
+ * Board-specific pci initialization
+ * Platform code can reimplement pci_pre_init() if needed
+ */
+int __pci_pre_init(struct pci_controller *hose)
+{
+	return 1;
+}
+int pci_pre_init(struct pci_controller *hose) __attribute__((weak, alias("__pci_pre_init")));
 
-#ifdef CONFIG_PCI
+#if defined(CONFIG_405GP) || defined(CONFIG_405EP)
 
 #if defined(CONFIG_PMC405)
 ushort pmc405_pci_subsys_deviceid(void);
@@ -191,6 +201,13 @@ void pci_405gp_init(struct pci_controller *hose)
 	if (hose->pci_fb)
 		pciauto_region_init(hose->pci_fb);
 
+	/* Let board change/modify hose & do initial checks */
+	if (pci_pre_init (hose) == 0) {
+		printf("PCI: Board-specific initialization failed.\n");
+		printf("PCI: Configuration aborted.\n");
+		return;
+	}
+
 	pci_register_hose(hose);
 
 	/*--------------------------------------------------------------------------+
@@ -416,14 +433,12 @@ void pci_init_board(void)
 
 #endif
 
-#endif /* CONFIG_PCI */
-
 #endif /* CONFIG_405GP */
 
 /*-----------------------------------------------------------------------------+
  * CONFIG_440
  *-----------------------------------------------------------------------------*/
-#if defined(CONFIG_440) && defined(CONFIG_PCI)
+#if defined(CONFIG_440)
 
 static struct pci_controller ppc440_hose = {0};
 
@@ -496,14 +511,12 @@ void pci_440_init (struct pci_controller *hose)
 
 	pci_setup_indirect(hose, PCIX0_CFGADR, PCIX0_CFGDATA);
 
-#if defined(CFG_PCI_PRE_INIT)
 	/* Let board change/modify hose & do initial checks */
 	if (pci_pre_init (hose) == 0) {
 		printf("PCI: Board-specific initialization failed.\n");
 		printf("PCI: Configuration aborted.\n");
 		return;
 	}
-#endif
 
 	pci_register_hose( hose );
 
@@ -575,4 +588,5 @@ void pci_init_board(void)
 #endif
 }
 
-#endif /* CONFIG_440 & CONFIG_PCI */
+#endif /* CONFIG_440 */
+#endif /* CONFIG_PCI */
diff --git a/cpu/ppc4xx/44x_spd_ddr.c b/cpu/ppc4xx/44x_spd_ddr.c
index c500d3f..e24cd81 100644
--- a/cpu/ppc4xx/44x_spd_ddr.c
+++ b/cpu/ppc4xx/44x_spd_ddr.c
@@ -262,7 +262,7 @@ typedef struct bank_param BANKPARMS;
 #ifdef CFG_SIMULATE_SPD_EEPROM
 extern unsigned char cfg_simulate_spd_eeprom[128];
 #endif
-void program_tlb(u32 start, u32 size, u32 tlb_word2_i_value);
+void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
 
 static unsigned char spd_read(uchar chip, uint addr);
 static void get_spd_info(unsigned long *dimm_populated,
@@ -373,7 +373,7 @@ long int spd_sdram(void) {
 
 #ifdef CONFIG_PROG_SDRAM_TLB /* this define should eventually be removed */
 	/* and program tlb entries for this size (dynamic) */
-	program_tlb(0, total_size, MY_TLB_WORD2_I_ENABLE);
+	program_tlb(0, 0, total_size, MY_TLB_WORD2_I_ENABLE);
 #endif
 
 	/*
@@ -1340,14 +1340,14 @@ static unsigned long program_bxcr(unsigned long *dimm_populated,
 			 */
 			cr |= SDRAM_BXCR_SDBE;
 
- 			for (i = 0; i < num_banks; i++) {
+			for (i = 0; i < num_banks; i++) {
 				bank_parms[ctrl_bank_num[dimm_num]+i].bank_size_bytes =
 					(4 << 20) * bank_size_id;
 				bank_parms[ctrl_bank_num[dimm_num]+i].cr = cr;
 				debug("DIMM%d-bank %d (SDRAM0_B%dCR): bank_size_bytes=%d\n",
 				      dimm_num, i, ctrl_bank_num[dimm_num]+i,
 				      bank_parms[ctrl_bank_num[dimm_num]+i].bank_size_bytes);
- 			}
+			}
 		}
 	}
 
diff --git a/cpu/ppc4xx/44x_spd_ddr2.c b/cpu/ppc4xx/44x_spd_ddr2.c
index 48b9ee2..b5c0f53 100644
--- a/cpu/ppc4xx/44x_spd_ddr2.c
+++ b/cpu/ppc4xx/44x_spd_ddr2.c
@@ -58,8 +58,8 @@
 #define SDRAM_DDR2	2
 #define SDRAM_NONE	0
 
-#define MAXDIMMS 	2
-#define MAXRANKS 	4
+#define MAXDIMMS	2
+#define MAXRANKS	4
 #define MAXBXCF		4
 #define MAX_SPD_BYTES	256   /* Max number of bytes on the DIMM's SPD EEPROM */
 
@@ -144,7 +144,7 @@ typedef enum ddr_cas_id {
  * Prototypes
  *-----------------------------------------------------------------------------*/
 static unsigned long sdram_memsize(void);
-void program_tlb(u32 start, u32 size, u32 tlb_word2_i_value);
+void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value);
 static void get_spd_info(unsigned long *dimm_populated,
 			 unsigned char *iic0_dimm_addr,
 			 unsigned long num_dimm_banks);
@@ -528,7 +528,7 @@ long int initdram(int board_type)
 	dram_size = sdram_memsize();
 
 	/* and program tlb entries for this size (dynamic) */
-	program_tlb(0, dram_size, MY_TLB_WORD2_I_ENABLE);
+	program_tlb(0, 0, dram_size, MY_TLB_WORD2_I_ENABLE);
 
 	/*------------------------------------------------------------------
 	 * DQS calibration.
diff --git a/cpu/ppc4xx/config.mk b/cpu/ppc4xx/config.mk
index 119e061..4fd5108 100644
--- a/cpu/ppc4xx/config.mk
+++ b/cpu/ppc4xx/config.mk
@@ -22,5 +22,13 @@
 #
 
 PLATFORM_RELFLAGS += -fPIC -ffixed-r14 -meabi -fno-strict-aliasing
+PLATFORM_CPPFLAGS += -DCONFIG_4xx -ffixed-r2 -ffixed-r29 -mstring -msoft-float
 
-PLATFORM_CPPFLAGS += -DCONFIG_4xx -ffixed-r2 -ffixed-r29 -mstring -Wa,-m405 -mcpu=405 -msoft-float
+cfg=$(shell grep configs $(OBJTREE)/include/config.h | sed 's/.*<\(configs.*\)>/\1/')
+is440=$(shell grep CONFIG_440 $(TOPDIR)/include/$(cfg))
+
+ifneq (,$(findstring CONFIG_440,$(is440)))
+PLATFORM_CPPFLAGS += -Wa,-m440 -mcpu=440
+else
+PLATFORM_CPPFLAGS += -Wa,-m405 -mcpu=405
+endif
diff --git a/cpu/ppc4xx/cpu_init.c b/cpu/ppc4xx/cpu_init.c
index 66e8637..351da36 100644
--- a/cpu/ppc4xx/cpu_init.c
+++ b/cpu/ppc4xx/cpu_init.c
@@ -153,7 +153,7 @@ cpu_init_f (void)
 	 */
 	asm volatile("	bl	0f"		::: "lr");
 	asm volatile("0:	mflr	3"		::: "r3");
-	asm volatile("	addi 	4, 0, 14"	::: "r4");
+	asm volatile("	addi	4, 0, 14"	::: "r4");
 	asm volatile("	mtctr	4"		::: "ctr");
 	asm volatile("1:	icbt	0, 3");
 	asm volatile("	addi	3, 3, 32"	::: "r3");
@@ -211,6 +211,8 @@ cpu_init_f (void)
 	val = mfspr(tcr);
 #if defined(CONFIG_440EP) || defined(CONFIG_440GR)
 	val |= 0xb8000000;      /* generate system reset after 1.34 seconds */
+#elif defined(CONFIG_440EPX)
+	val |= 0xb0000000;      /* generate system reset after 1.34 seconds */
 #else
 	val |= 0xf0000000;      /* generate system reset after 2.684 seconds */
 #endif
diff --git a/cpu/ppc4xx/gpio.c b/cpu/ppc4xx/gpio.c
index dd84e58..5235203 100644
--- a/cpu/ppc4xx/gpio.c
+++ b/cpu/ppc4xx/gpio.c
@@ -103,6 +103,18 @@ void gpio_write_bit(int pin, int val)
 		out32(GPIO0_OR + offs, in32(GPIO0_OR + offs) & ~GPIO_VAL(pin));
 }
 
+int gpio_read_out_bit(int pin)
+{
+	u32 offs = 0;
+
+	if (pin >= GPIO_MAX) {
+		offs = 0x100;
+		pin -= GPIO_MAX;
+	}
+
+	return (in32(GPIO0_OR + offs) & GPIO_VAL(pin) ? 1 : 0);
+}
+
 #if defined(CFG_440_GPIO_TABLE)
 void gpio_set_chip_configuration(void)
 {
@@ -157,12 +169,38 @@ void gpio_set_chip_configuration(void)
 				switch (gpio_tab[gpio_core][i].alt_nb) {
 				case GPIO_SEL:
 					if (gpio_core == GPIO0) {
-						reg = in32(GPIO0_TCR) | (0x80000000 >> (j));
+						/*
+						 * Setup output value
+						 * 1 -> high level
+						 * 0 -> low level
+						 * else -> don't touch
+						 */
+						reg = in32(GPIO0_OR);
+						if (gpio_tab[gpio_core][i].out_val == GPIO_OUT_1)
+							reg |= (0x80000000 >> (i));
+						else if (gpio_tab[gpio_core][i].out_val == GPIO_OUT_0)
+							reg &= ~(0x80000000 >> (i));
+						out32(GPIO0_OR, reg);
+
+						reg = in32(GPIO0_TCR) | (0x80000000 >> (i));
 						out32(GPIO0_TCR, reg);
 					}
 
 					if (gpio_core == GPIO1) {
-						reg = in32(GPIO1_TCR) | (0x80000000 >> (j));
+						/*
+						 * Setup output value
+						 * 1 -> high level
+						 * 0 -> low level
+						 * else -> don't touch
+						 */
+						reg = in32(GPIO0_OR);
+						if (gpio_tab[gpio_core][i].out_val == GPIO_OUT_1)
+							reg |= (0x80000000 >> (i));
+						else if (gpio_tab[gpio_core][i].out_val == GPIO_OUT_0)
+							reg &= ~(0x80000000 >> (i));
+						out32(GPIO0_OR, reg);
+
+						reg = in32(GPIO1_TCR) | (0x80000000 >> (i));
 						out32(GPIO1_TCR, reg);
 					}
 
diff --git a/cpu/ppc4xx/start.S b/cpu/ppc4xx/start.S
index 78d0042..6086b6c 100644
--- a/cpu/ppc4xx/start.S
+++ b/cpu/ppc4xx/start.S
@@ -22,26 +22,27 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  * MA 02111-1307 USA
  */
-/*------------------------------------------------------------------------------+ */
-/* */
-/*	 This source code has been made available to you by IBM on an AS-IS */
-/*	 basis.	 Anyone receiving this source is licensed under IBM */
-/*	 copyrights to use it in any way he or she deems fit, including */
-/*	 copying it, modifying it, compiling it, and redistributing it either */
-/*	 with or without modifications.	 No license under IBM patents or */
-/*	 patent applications is to be implied by the copyright license. */
-/* */
-/*	 Any user of this software should understand that IBM cannot provide */
-/*	 technical support for this software and will not be responsible for */
-/*	 any consequences resulting from the use of this software. */
-/* */
-/*	 Any person who transfers this source code or any derivative work */
-/*	 must include the IBM copyright notice, this paragraph, and the */
-/*	 preceding two paragraphs in the transferred software. */
-/* */
-/*	 COPYRIGHT   I B M   CORPORATION 1995 */
-/*	 LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M */
-/*------------------------------------------------------------------------------- */
+/*------------------------------------------------------------------------------+
+ *
+ *	 This source code has been made available to you by IBM on an AS-IS
+ *	 basis.	 Anyone receiving this source is licensed under IBM
+ *	 copyrights to use it in any way he or she deems fit, including
+ *	 copying it, modifying it, compiling it, and redistributing it either
+ *	 with or without modifications.	 No license under IBM patents or
+ *	 patent applications is to be implied by the copyright license.
+ *
+ *	 Any user of this software should understand that IBM cannot provide
+ *	 technical support for this software and will not be responsible for
+ *	 any consequences resulting from the use of this software.
+ *
+ *	 Any person who transfers this source code or any derivative work
+ *	 must include the IBM copyright notice, this paragraph, and the
+ *	 preceding two paragraphs in the transferred software.
+ *
+ *	 COPYRIGHT   I B M   CORPORATION 1995
+ *	 LICENSED MATERIAL  -  PROGRAM PROPERTY OF I B M
+ *-------------------------------------------------------------------------------
+ */
 
 /*  U-Boot - Startup Code for AMCC 4xx PowerPC based Embedded Boards
  *
@@ -59,7 +60,6 @@
  *  address and (s)dram will be positioned at address 0
  */
 #include <config.h>
-#include <mpc8xx.h>
 #include <ppc4xx.h>
 #include <version.h>
 
@@ -110,11 +110,11 @@
 # endif
 #endif /* CFG_INIT_DCACHE_CS */
 
-#define function_prolog(func_name)      .text; \
+#define function_prolog(func_name)	.text; \
 					.align 2; \
 					.globl func_name; \
 					func_name:
-#define function_epilog(func_name)      .type func_name,@function; \
+#define function_epilog(func_name)	.type func_name,@function; \
 					.size func_name,.-func_name
 
 /* We don't want the  MMU yet.
@@ -294,11 +294,13 @@ skip_debug_init:
 	mtspr	ivor7,r1	/* Floating point unavailable */
 	li	r1,0x0c00
 	mtspr	ivor8,r1	/* System call */
-	li	r1,0x1000
-	mtspr	ivor10,r1	/* Decrementer (PIT for 440) */
-	li	r1,0x1400
-	mtspr	ivor13,r1	/* Data TLB error */
+	li	r1,0x0a00
+	mtspr	ivor9,r1	/* Auxiliary Processor unavailable */
+	li	r1,0x0900
+	mtspr	ivor10,r1	/* Decrementer */
 	li	r1,0x1300
+	mtspr	ivor13,r1	/* Data TLB error */
+	li	r1,0x1400
 	mtspr	ivor14,r1	/* Instr TLB error */
 	li	r1,0x2000
 	mtspr	ivor15,r1	/* Debug */
@@ -503,11 +505,81 @@ version_string:
 	.ascii " (", __DATE__, " - ", __TIME__, ")"
 	.ascii CONFIG_IDENT_STRING, "\0"
 
-/*
- * Maybe this should be moved somewhere else because the current
- * location (0x100) is where the CriticalInput Execption should be.
- */
 	. = EXC_OFF_SYS_RESET
+	.globl	_start_of_vectors
+_start_of_vectors:
+
+/* Critical input. */
+	CRIT_EXCEPTION(0x100, CritcalInput, UnknownException)
+
+#ifdef CONFIG_440
+/* Machine check */
+	MCK_EXCEPTION(0x200, MachineCheck, MachineCheckException)
+#else
+	CRIT_EXCEPTION(0x200, MachineCheck, MachineCheckException)
+#endif /* CONFIG_440 */
+
+/* Data Storage exception. */
+	STD_EXCEPTION(0x300, DataStorage, UnknownException)
+
+/* Instruction Storage exception. */
+	STD_EXCEPTION(0x400, InstStorage, UnknownException)
+
+/* External Interrupt exception. */
+	STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
+
+/* Alignment exception. */
+	. = 0x600
+Alignment:
+	EXCEPTION_PROLOG(SRR0, SRR1)
+	mfspr	r4,DAR
+	stw	r4,_DAR(r21)
+	mfspr	r5,DSISR
+	stw	r5,_DSISR(r21)
+	addi	r3,r1,STACK_FRAME_OVERHEAD
+	li	r20,MSR_KERNEL
+	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
+	lwz	r6,GOT(transfer_to_handler)
+	mtlr	r6
+	blrl
+.L_Alignment:
+	.long	AlignmentException - _start + _START_OFFSET
+	.long	int_return - _start + _START_OFFSET
+
+/* Program check exception */
+	. = 0x700
+ProgramCheck:
+	EXCEPTION_PROLOG(SRR0, SRR1)
+	addi	r3,r1,STACK_FRAME_OVERHEAD
+	li	r20,MSR_KERNEL
+	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
+	lwz	r6,GOT(transfer_to_handler)
+	mtlr	r6
+	blrl
+.L_ProgramCheck:
+	.long	ProgramCheckException - _start + _START_OFFSET
+	.long	int_return - _start + _START_OFFSET
+
+#ifdef CONFIG_440
+	STD_EXCEPTION(0x800, FPUnavailable, UnknownException)
+	STD_EXCEPTION(0x900, Decrementer, DecrementerPITException)
+	STD_EXCEPTION(0xa00, APU, UnknownException)
+#endif
+	STD_EXCEPTION(0xc00, SystemCall, UnknownException)
+
+#ifdef CONFIG_440
+	STD_EXCEPTION(0x1300, DataTLBError, UnknownException)
+	STD_EXCEPTION(0x1400, InstructionTLBError, UnknownException)
+#else
+	STD_EXCEPTION(0x1000, PIT, DecrementerPITException)
+	STD_EXCEPTION(0x1100, InstructionTLBMiss, UnknownException)
+	STD_EXCEPTION(0x1200, DataTLBMiss, UnknownException)
+#endif
+	CRIT_EXCEPTION(0x2000, DebugBreakpoint, DebugException )
+
+	.globl	_end_of_vectors
+_end_of_vectors:
+	. = _START_OFFSET
 #endif
 	.globl	_start
 _start:
@@ -817,21 +889,21 @@ _start:
 	 */
 	lis	r3,CFG_OCM_DATA_ADDR@h	/* OCM location */
 	ori	r3,r3,CFG_OCM_DATA_ADDR@l
-	ori	r3,r3,0x8270	/* 32K Offset, 16K for Bank 1, R/W/Enable */
+	ori	r3,r3,0x0270		/* 16K for Bank 1, R/W/Enable */
 	mtdcr	ocmplb3cr1,r3		/* Set PLB Access */
 	ori	r3,r3,0x4000		/* Add 0x4000 for bank 2 */
 	mtdcr	ocmplb3cr2,r3		/* Set PLB Access */
 	isync
 
-	lis	r3,CFG_OCM_DATA_ADDR@h  /* OCM location */
+	lis	r3,CFG_OCM_DATA_ADDR@h	/* OCM location */
 	ori	r3,r3,CFG_OCM_DATA_ADDR@l
-	ori	r3,r3,0x0270            /* 16K for Bank 1, R/W/Enable */
-	mtdcr	ocmdscr1, r3            /* Set Data Side */
-	mtdcr	ocmiscr1, r3            /* Set Instruction Side */
+	ori	r3,r3,0x0270		/* 16K for Bank 1, R/W/Enable */
+	mtdcr	ocmdscr1, r3		/* Set Data Side */
+	mtdcr	ocmiscr1, r3		/* Set Instruction Side */
 	ori	r3,r3,0x4000		/* Add 0x4000 for bank 2 */
-	mtdcr	ocmdscr2, r3            /* Set Data Side */
-	mtdcr	ocmiscr2, r3            /* Set Instruction Side */
-	addis	r3,0,0x0800             /* OCM Data Parity Disable - 1 Wait State */
+	mtdcr	ocmdscr2, r3		/* Set Data Side */
+	mtdcr	ocmiscr2, r3		/* Set Instruction Side */
+	addis	r3,0,0x0800		/* OCM Data Parity Disable - 1 Wait State */
 	mtdcr	ocmdsisdpc,r3
 
 	isync
@@ -850,7 +922,7 @@ _start:
 	mtdcr	ocmdscntl, r4		/* set data-side IRAM config */
 	isync
 
-	lis	r3,CFG_OCM_DATA_ADDR@h  /* OCM location */
+	lis	r3,CFG_OCM_DATA_ADDR@h	/* OCM location */
 	ori	r3,r3,CFG_OCM_DATA_ADDR@l
 	mtdcr	ocmdsarc, r3
 	addis	r4, 0, 0xC000		/* OCM data area enabled */
@@ -1017,107 +1089,6 @@ start_ram:
 
 
 #ifndef CONFIG_NAND_SPL
-/*****************************************************************************/
-	.globl	_start_of_vectors
-_start_of_vectors:
-
-#if 0
-/*TODO Fixup _start above so we can do this*/
-/* Critical input. */
-	CRIT_EXCEPTION(0x100, CritcalInput, CritcalInputException)
-#endif
-
-/* Machine check */
-	CRIT_EXCEPTION(0x200, MachineCheck, MachineCheckException)
-
-/* Data Storage exception. */
-	STD_EXCEPTION(0x300, DataStorage, UnknownException)
-
-/* Instruction Storage exception. */
-	STD_EXCEPTION(0x400, InstStorage, UnknownException)
-
-/* External Interrupt exception. */
-	STD_EXCEPTION(0x500, ExtInterrupt, external_interrupt)
-
-/* Alignment exception. */
-	. = 0x600
-Alignment:
-	EXCEPTION_PROLOG
-	mfspr	r4,DAR
-	stw	r4,_DAR(r21)
-	mfspr	r5,DSISR
-	stw	r5,_DSISR(r21)
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	li	r20,MSR_KERNEL
-	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
-	lwz	r6,GOT(transfer_to_handler)
-	mtlr	r6
-	blrl
-.L_Alignment:
-	.long	AlignmentException - _start + EXC_OFF_SYS_RESET
-	.long	int_return - _start + EXC_OFF_SYS_RESET
-
-/* Program check exception */
-	. = 0x700
-ProgramCheck:
-	EXCEPTION_PROLOG
-	addi	r3,r1,STACK_FRAME_OVERHEAD
-	li	r20,MSR_KERNEL
-	rlwimi	r20,r23,0,16,16		/* copy EE bit from saved MSR */
-	lwz	r6,GOT(transfer_to_handler)
-	mtlr	r6
-	blrl
-.L_ProgramCheck:
-	.long	ProgramCheckException - _start + EXC_OFF_SYS_RESET
-	.long	int_return - _start + EXC_OFF_SYS_RESET
-
-	/* No FPU on MPC8xx.  This exception is not supposed to happen.
-	*/
-	STD_EXCEPTION(0x800, FPUnavailable, UnknownException)
-
-	/* I guess we could implement decrementer, and may have
-	 * to someday for timekeeping.
-	 */
-	STD_EXCEPTION(0x900, Decrementer, timer_interrupt)
-	STD_EXCEPTION(0xa00, Trap_0a, UnknownException)
-	STD_EXCEPTION(0xb00, Trap_0b, UnknownException)
-	STD_EXCEPTION(0xc00, SystemCall, UnknownException)
-	STD_EXCEPTION(0xd00, SingleStep, UnknownException)
-
-	STD_EXCEPTION(0xe00, Trap_0e, UnknownException)
-	STD_EXCEPTION(0xf00, Trap_0f, UnknownException)
-
-	/* On the MPC8xx, this is a software emulation interrupt.  It occurs
-	 * for all unimplemented and illegal instructions.
-	 */
-	STD_EXCEPTION(0x1000, PIT, PITException)
-
-	STD_EXCEPTION(0x1100, InstructionTLBMiss, UnknownException)
-	STD_EXCEPTION(0x1200, DataTLBMiss, UnknownException)
-	STD_EXCEPTION(0x1300, InstructionTLBError, UnknownException)
-	STD_EXCEPTION(0x1400, DataTLBError, UnknownException)
-
-	STD_EXCEPTION(0x1500, Reserved5, UnknownException)
-	STD_EXCEPTION(0x1600, Reserved6, UnknownException)
-	STD_EXCEPTION(0x1700, Reserved7, UnknownException)
-	STD_EXCEPTION(0x1800, Reserved8, UnknownException)
-	STD_EXCEPTION(0x1900, Reserved9, UnknownException)
-	STD_EXCEPTION(0x1a00, ReservedA, UnknownException)
-	STD_EXCEPTION(0x1b00, ReservedB, UnknownException)
-
-	STD_EXCEPTION(0x1c00, DataBreakpoint, UnknownException)
-	STD_EXCEPTION(0x1d00, InstructionBreakpoint, UnknownException)
-	STD_EXCEPTION(0x1e00, PeripheralBreakpoint, UnknownException)
-	STD_EXCEPTION(0x1f00, DevPortBreakpoint, UnknownException)
-
-	CRIT_EXCEPTION(0x2000, DebugBreakpoint, DebugException )
-
-	.globl	_end_of_vectors
-_end_of_vectors:
-
-
-	. = 0x2100
-
 /*
  * This code finishes saving the registers to the exception frame
  * and jumps to the appropriate handler for the exception.
@@ -1133,28 +1104,12 @@ transfer_to_handler:
 	SAVE_4GPRS(8, r21)
 	SAVE_8GPRS(12, r21)
 	SAVE_8GPRS(24, r21)
-#if 0
-	andi.	r23,r23,MSR_PR
-	mfspr	r23,SPRG3		/* if from user, fix up tss.regs */
-	beq	2f
-	addi	r24,r1,STACK_FRAME_OVERHEAD
-	stw	r24,PT_REGS(r23)
-2:	addi	r2,r23,-TSS		/* set r2 to current */
-	tovirt(r2,r2,r23)
-#endif
 	mflr	r23
 	andi.	r24,r23,0x3f00		/* get vector offset */
 	stw	r24,TRAP(r21)
 	li	r22,0
 	stw	r22,RESULT(r21)
 	mtspr	SPRG2,r22		/* r1 is now kernel sp */
-#if 0
-	addi	r24,r2,TASK_STRUCT_SIZE /* check for kernel stack overflow */
-	cmplw	0,r1,r2
-	cmplw	1,r1,r24
-	crand	1,1,4
-	bgt	stack_ovf		/* if r2 < r1 < r2+TASK_STRUCT_SIZE */
-#endif
 	lwz	r24,0(r23)		/* virtual address of handler */
 	lwz	r23,4(r23)		/* where to go when done */
 	mtspr	SRR0,r24
@@ -1215,16 +1170,72 @@ crit_return:
 	REST_GPR(31, r1)
 	lwz	r2,_NIP(r1)	/* Restore environment */
 	lwz	r0,_MSR(r1)
-	mtspr	990,r2		/* SRR2 */
-	mtspr	991,r0		/* SRR3 */
+	mtspr	csrr0,r2
+	mtspr	csrr1,r0
 	lwz	r0,GPR0(r1)
 	lwz	r2,GPR2(r1)
 	lwz	r1,GPR1(r1)
 	SYNC
 	rfci
 
-/* Cache functions.
-*/
+#ifdef CONFIG_440
+mck_return:
+	mfmsr	r28		/* Disable interrupts */
+	li	r4,0
+	ori	r4,r4,MSR_EE
+	andc	r28,r28,r4
+	SYNC			/* Some chip revs need this... */
+	mtmsr	r28
+	SYNC
+	lwz	r2,_CTR(r1)
+	lwz	r0,_LINK(r1)
+	mtctr	r2
+	mtlr	r0
+	lwz	r2,_XER(r1)
+	lwz	r0,_CCR(r1)
+	mtspr	XER,r2
+	mtcrf	0xFF,r0
+	REST_10GPRS(3, r1)
+	REST_10GPRS(13, r1)
+	REST_8GPRS(23, r1)
+	REST_GPR(31, r1)
+	lwz	r2,_NIP(r1)	/* Restore environment */
+	lwz	r0,_MSR(r1)
+	mtspr	mcsrr0,r2
+	mtspr	mcsrr1,r0
+	lwz	r0,GPR0(r1)
+	lwz	r2,GPR2(r1)
+	lwz	r1,GPR1(r1)
+	SYNC
+	rfmci
+#endif /* CONFIG_440 */
+
+
+/*
+ * Cache functions.
+ *
+ * NOTE: currently the 440s run with dcache _disabled_ once relocated to DRAM,
+ * although for some cache-ralated calls stubs have to be provided to satisfy
+ * symbols resolution.
+ * Icache-related functions are used in POST framework.
+ *
+ */
+#ifdef CONFIG_440
+       .globl  dcache_disable
+       .globl  icache_disable	
+       .globl  icache_enable
+dcache_disable:
+icache_disable:
+icache_enable:
+	blr
+
+	.globl	dcache_status
+	.globl	icache_status
+dcache_status:
+icache_status:
+	mr	r3,  0
+	blr
+#else
 flush_dcache:
 	addis	r9,r0,0x0002		/* set mask for EE and CE msr bits */
 	ori	r9,r9,0x8000
@@ -1303,24 +1314,13 @@ dcache_status:
 	mfdccr	r3
 	srwi	r3, r3, 31	/* >>31 => select bit 0 */
 	blr
+#endif
 
 	.globl get_pvr
 get_pvr:
 	mfspr	r3, PVR
 	blr
 
-#if !defined(CONFIG_440)
-	.globl wr_pit
-wr_pit:
-	mtspr	pit, r3
-	blr
-#endif
-
-	.globl wr_tcr
-wr_tcr:
-	mtspr	tcr, r3
-	blr
-
 /*------------------------------------------------------------------------------- */
 /* Function:	 out16 */
 /* Description:	 Output 16 bits */
@@ -1518,7 +1518,7 @@ relocate_code:
  * initialization, now running from RAM.
  */
 
-	addi	r0, r10, in_ram - _start + EXC_OFF_SYS_RESET
+	addi	r0, r10, in_ram - _start + _START_OFFSET
 	mtlr	r0
 	blr				/* NEVER RETURNS! */
 
@@ -1588,7 +1588,7 @@ clear_bss:
 	 */
 	.globl	trap_init
 trap_init:
-	lwz	r7, GOT(_start)
+	lwz	r7, GOT(_start_of_vectors)
 	lwz	r8, GOT(_end_of_vectors)
 
 	li	r9, 0x100		/* reset vector always at 0x100 */
@@ -1608,35 +1608,48 @@ trap_init:
 	/*
 	 * relocate `hdlr' and `int_return' entries
 	 */
-	li	r7, .L_MachineCheck - _start + EXC_OFF_SYS_RESET
-	li	r8, Alignment - _start + EXC_OFF_SYS_RESET
+	li	r7, .L_MachineCheck - _start + _START_OFFSET
+	li	r8, Alignment - _start + _START_OFFSET
 2:
 	bl	trap_reloc
-	addi	r7, r7, 0x100		/* next exception vector	*/
+	addi	r7, r7, 0x100		/* next exception vector */
 	cmplw	0, r7, r8
 	blt	2b
 
-	li	r7, .L_Alignment - _start + EXC_OFF_SYS_RESET
+	li	r7, .L_Alignment - _start + _START_OFFSET
 	bl	trap_reloc
 
-	li	r7, .L_ProgramCheck - _start + EXC_OFF_SYS_RESET
+	li	r7, .L_ProgramCheck - _start + _START_OFFSET
 	bl	trap_reloc
 
-	li	r7, .L_FPUnavailable - _start + EXC_OFF_SYS_RESET
-	li	r8, SystemCall - _start + EXC_OFF_SYS_RESET
-3:
+#ifdef CONFIG_440
+	li	r7, .L_FPUnavailable - _start + _START_OFFSET
 	bl	trap_reloc
-	addi	r7, r7, 0x100		/* next exception vector	*/
-	cmplw	0, r7, r8
-	blt	3b
 
-	li	r7, .L_SingleStep - _start + EXC_OFF_SYS_RESET
-	li	r8, _end_of_vectors - _start + EXC_OFF_SYS_RESET
-4:
+	li	r7, .L_Decrementer - _start + _START_OFFSET
+	bl	trap_reloc
+
+	li	r7, .L_APU - _start + _START_OFFSET
+	bl	trap_reloc
+
+	li	r7, .L_InstructionTLBError - _start + _START_OFFSET
+	bl	trap_reloc
+
+	li	r7, .L_DataTLBError - _start + _START_OFFSET
+	bl	trap_reloc
+#else /* CONFIG_440 */
+	li	r7, .L_PIT - _start + _START_OFFSET
+	bl	trap_reloc
+
+	li	r7, .L_InstructionTLBMiss - _start + _START_OFFSET
+	bl	trap_reloc
+
+	li	r7, .L_DataTLBMiss - _start + _START_OFFSET
+	bl	trap_reloc
+#endif /* CONFIG_440 */
+
+	li	r7, .L_DebugBreakpoint - _start + _START_OFFSET
 	bl	trap_reloc
-	addi	r7, r7, 0x100		/* next exception vector	*/
-	cmplw	0, r7, r8
-	blt	4b
 
 #if !defined(CONFIG_440)
 	addi	r7,r0,0x1000		/* set ME bit (Machine Exceptions) */
@@ -1679,13 +1692,13 @@ trap_reloc:
 +----------------------------------------------------------------------------*/
 	function_prolog(dcbz_area)
 	rlwinm. r5,r4,0,27,31
-	rlwinm  r5,r4,27,5,31
-	beq     ..d_ra2
-	addi    r5,r5,0x0001
-..d_ra2:mtctr   r5
-..d_ag2:dcbz    r0,r3
-	addi    r3,r3,32
-	bdnz    ..d_ag2
+	rlwinm	r5,r4,27,5,31
+	beq	..d_ra2
+	addi	r5,r5,0x0001
+..d_ra2:mtctr	r5
+..d_ag2:dcbz	r0,r3
+	addi	r3,r3,32
+	bdnz	..d_ag2
 	sync
 	blr
 	function_epilog(dcbz_area)
@@ -1694,26 +1707,26 @@ trap_reloc:
 | dflush.  Assume 32K at vector address is cachable.
 +----------------------------------------------------------------------------*/
 	function_prolog(dflush)
-	mfmsr   r9
-	rlwinm  r8,r9,0,15,13
-	rlwinm  r8,r8,0,17,15
-	mtmsr   r8
-	addi    r3,r0,0x0000
-	mtspr   dvlim,r3
-	mfspr   r3,ivpr
-	addi    r4,r0,1024
-	mtctr   r4
+	mfmsr	r9
+	rlwinm	r8,r9,0,15,13
+	rlwinm	r8,r8,0,17,15
+	mtmsr	r8
+	addi	r3,r0,0x0000
+	mtspr	dvlim,r3
+	mfspr	r3,ivpr
+	addi	r4,r0,1024
+	mtctr	r4
 ..dflush_loop:
-	lwz     r6,0x0(r3)
-	addi    r3,r3,32
-	bdnz    ..dflush_loop
-	addi    r3,r3,-32
-	mtctr   r4
-..ag:   dcbf    r0,r3
-	addi    r3,r3,-32
-	bdnz    ..ag
+	lwz	r6,0x0(r3)
+	addi	r3,r3,32
+	bdnz	..dflush_loop
+	addi	r3,r3,-32
+	mtctr	r4
+..ag:	dcbf	r0,r3
+	addi	r3,r3,-32
+	bdnz	..ag
 	sync
-	mtmsr   r9
+	mtmsr	r9
 	blr
 	function_epilog(dflush)
 #endif /* CONFIG_440 */
diff --git a/cpu/ppc4xx/tlb.c b/cpu/ppc4xx/tlb.c
index 50344a4..049a785 100644
--- a/cpu/ppc4xx/tlb.c
+++ b/cpu/ppc4xx/tlb.c
@@ -36,7 +36,8 @@ typedef struct region {
 	unsigned long tlb_word2_i_value;
 } region_t;
 
-static int add_tlb_entry(unsigned long base_addr,
+static int add_tlb_entry(unsigned long phys_addr,
+			 unsigned long virt_addr,
 			 unsigned long tlb_word0_size_value,
 			 unsigned long tlb_word2_i_value)
 {
@@ -55,9 +56,9 @@ static int add_tlb_entry(unsigned long base_addr,
 		return -1;
 
 	/* Second, create the TLB entry */
-	tlb_word0_value = TLB_WORD0_EPN_ENCODE(base_addr) | TLB_WORD0_V_ENABLE |
+	tlb_word0_value = TLB_WORD0_EPN_ENCODE(virt_addr) | TLB_WORD0_V_ENABLE |
 		TLB_WORD0_TS_0 | tlb_word0_size_value;
-	tlb_word1_value = TLB_WORD1_RPN_ENCODE(base_addr) | TLB_WORD1_ERPN_ENCODE(0);
+	tlb_word1_value = TLB_WORD1_RPN_ENCODE(phys_addr) | TLB_WORD1_ERPN_ENCODE(0);
 	tlb_word2_value = TLB_WORD2_U0_DISABLE | TLB_WORD2_U1_DISABLE |
 		TLB_WORD2_U2_DISABLE | TLB_WORD2_U3_DISABLE |
 		TLB_WORD2_W_DISABLE | tlb_word2_i_value |
@@ -81,7 +82,9 @@ static int add_tlb_entry(unsigned long base_addr,
 	return 0;
 }
 
-static void program_tlb_addr(unsigned long base_addr, unsigned long mem_size,
+static void program_tlb_addr(unsigned long phys_addr,
+			     unsigned long virt_addr,
+			     unsigned long mem_size,
 			     unsigned long tlb_word2_i_value)
 {
 	int rc;
@@ -91,70 +94,86 @@ static void program_tlb_addr(unsigned long base_addr, unsigned long mem_size,
 	while (mem_size != 0) {
 		rc = 0;
 		/* Add the TLB entries in to map the region. */
-		if (((base_addr & TLB_256MB_ALIGN_MASK) == base_addr) &&
+		if (((phys_addr & TLB_256MB_ALIGN_MASK) == phys_addr) &&
 		    (mem_size >= TLB_256MB_SIZE)) {
 			/* Add a 256MB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_256MB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_256MB, tlb_i)) == 0) {
 				mem_size -= TLB_256MB_SIZE;
-				base_addr += TLB_256MB_SIZE;
+				phys_addr += TLB_256MB_SIZE;
+				virt_addr += TLB_256MB_SIZE;
 			}
-		} else if (((base_addr & TLB_16MB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_16MB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_16MB_SIZE)) {
 			/* Add a 16MB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_16MB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_16MB, tlb_i)) == 0) {
 				mem_size -= TLB_16MB_SIZE;
-				base_addr += TLB_16MB_SIZE;
+				phys_addr += TLB_16MB_SIZE;
+				virt_addr += TLB_16MB_SIZE;
 			}
-		} else if (((base_addr & TLB_1MB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_1MB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_1MB_SIZE)) {
 			/* Add a 1MB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_1MB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_1MB, tlb_i)) == 0) {
 				mem_size -= TLB_1MB_SIZE;
-				base_addr += TLB_1MB_SIZE;
+				phys_addr += TLB_1MB_SIZE;
+				virt_addr += TLB_1MB_SIZE;
 			}
-		} else if (((base_addr & TLB_256KB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_256KB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_256KB_SIZE)) {
 			/* Add a 256KB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_256KB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_256KB, tlb_i)) == 0) {
 				mem_size -= TLB_256KB_SIZE;
-				base_addr += TLB_256KB_SIZE;
+				phys_addr += TLB_256KB_SIZE;
+				virt_addr += TLB_256KB_SIZE;
 			}
-		} else if (((base_addr & TLB_64KB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_64KB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_64KB_SIZE)) {
 			/* Add a 64KB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_64KB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_64KB, tlb_i)) == 0) {
 				mem_size -= TLB_64KB_SIZE;
-				base_addr += TLB_64KB_SIZE;
+				phys_addr += TLB_64KB_SIZE;
+				virt_addr += TLB_64KB_SIZE;
 			}
-		} else if (((base_addr & TLB_16KB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_16KB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_16KB_SIZE)) {
 			/* Add a 16KB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_16KB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_16KB, tlb_i)) == 0) {
 				mem_size -= TLB_16KB_SIZE;
-				base_addr += TLB_16KB_SIZE;
+				phys_addr += TLB_16KB_SIZE;
+				virt_addr += TLB_16KB_SIZE;
 			}
-		} else if (((base_addr & TLB_4KB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_4KB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_4KB_SIZE)) {
 			/* Add a 4KB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_4KB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_4KB, tlb_i)) == 0) {
 				mem_size -= TLB_4KB_SIZE;
-				base_addr += TLB_4KB_SIZE;
+				phys_addr += TLB_4KB_SIZE;
+				virt_addr += TLB_4KB_SIZE;
 			}
-		} else if (((base_addr & TLB_1KB_ALIGN_MASK) == base_addr) &&
+		} else if (((phys_addr & TLB_1KB_ALIGN_MASK) == phys_addr) &&
 			   (mem_size >= TLB_1KB_SIZE)) {
 			/* Add a 1KB TLB entry */
-			if ((rc = add_tlb_entry(base_addr, TLB_WORD0_SIZE_1KB, tlb_i)) == 0) {
+			if ((rc = add_tlb_entry(phys_addr, virt_addr,
+						TLB_WORD0_SIZE_1KB, tlb_i)) == 0) {
 				mem_size -= TLB_1KB_SIZE;
-				base_addr += TLB_1KB_SIZE;
+				phys_addr += TLB_1KB_SIZE;
+				virt_addr += TLB_1KB_SIZE;
 			}
 		} else {
 			printf("ERROR: no TLB size exists for the base address 0x%0X.\n",
-				base_addr);
+				phys_addr);
 		}
 
 		if (rc != 0)
 			printf("ERROR: no TLB entries available for the base addr 0x%0X.\n",
-				base_addr);
+				phys_addr);
 	}
 
 	return;
@@ -166,16 +185,16 @@ static void program_tlb_addr(unsigned long base_addr, unsigned long mem_size,
  * Common usage for boards with SDRAM DIMM modules to dynamically
  * configure the TLB's for the SDRAM
  */
-void program_tlb(u32 start, u32 size, u32 tlb_word2_i_value)
+void program_tlb(u32 phys_addr, u32 virt_addr, u32 size, u32 tlb_word2_i_value)
 {
 	region_t region_array;
 
-	region_array.base = start;
+	region_array.base = phys_addr;
 	region_array.size = size;
 	region_array.tlb_word2_i_value = tlb_word2_i_value;	/* en-/disable cache */
 
 	/* Call the routine to add in the tlb entries for the memory regions */
-	program_tlb_addr(region_array.base, region_array.size,
+	program_tlb_addr(region_array.base, virt_addr, region_array.size,
 			 region_array.tlb_word2_i_value);
 
 	return;
diff --git a/cpu/ppc4xx/traps.c b/cpu/ppc4xx/traps.c
index 6aecca2..eb9420e 100644..100755
--- a/cpu/ppc4xx/traps.c
+++ b/cpu/ppc4xx/traps.c
@@ -36,6 +36,8 @@
 #include <command.h>
 #include <asm/processor.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 #if (CONFIG_COMMANDS & CFG_CMD_KGDB)
 int (*debugger_exception_handler)(struct pt_regs *) = 0;
 #endif
@@ -45,8 +47,7 @@ extern unsigned long search_exception_table(unsigned long);
 
 /* THIS NEEDS CHANGING to use the board info structure.
  */
-#define END_OF_MEM	0x00400000
-
+#define END_OF_MEM	(gd->bd->bi_memstart + gd->bd->bi_memsize)
 
 static __inline__ void set_tsr(unsigned long val)
 {
@@ -110,7 +111,7 @@ void show_regs(struct pt_regs * regs)
 {
 	int i;
 
-	printf("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DAR: %08lX\n",
+	printf("NIP: %08lX XER: %08lX LR: %08lX REGS: %p TRAP: %04lx DEAR: %08lX\n",
 	       regs->nip, regs->xer, regs->link, regs, regs->trap, regs->dar);
 	printf("MSR: %08lx EE: %01x PR: %01x FP: %01x ME: %01x IR/DR: %01x%01x\n",
 	       regs->msr, regs->msr&MSR_EE ? 1 : 0, regs->msr&MSR_PR ? 1 : 0,
@@ -120,14 +121,12 @@ void show_regs(struct pt_regs * regs)
 
 	printf("\n");
 	for (i = 0;  i < 32;  i++) {
-		if ((i % 8) == 0)
-		{
+		if ((i % 8) == 0) {
 			printf("GPR%02d: ", i);
 		}
 
 		printf("%08lX ", regs->gpr[i]);
-		if ((i % 8) == 7)
-		{
+		if ((i % 8) == 7) {
 			printf("\n");
 		}
 	}
@@ -139,13 +138,16 @@ _exception(int signr, struct pt_regs *regs)
 {
 	show_regs(regs);
 	print_backtrace((unsigned long *)regs->gpr[1]);
-	panic("Exception in kernel pc %lx signal %d",regs->nip,signr);
+	panic("Exception");
 }
 
 void
 MachineCheckException(struct pt_regs *regs)
 {
-	unsigned long fixup;
+	unsigned long fixup, val;
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	u32 value2;
+#endif
 
 	/* Probing PCI using config cycles cause this exception
 	 * when a device is not present.  Catch it and return to
@@ -161,26 +163,132 @@ MachineCheckException(struct pt_regs *regs)
 		return;
 #endif
 
-	printf("Machine check in kernel mode.\n");
+	printf("Machine Check Exception.\n");
 	printf("Caused by (from msr): ");
-	printf("regs %p ",regs);
-	switch( regs->msr & 0x000F0000) {
-	case (0x80000000>>12):
-		printf("Machine check signal - probably due to mm fault\n"
-		       "with mmu off\n");
+	printf("regs %p ", regs);
+
+	val = get_esr();
+
+#if !defined(CONFIG_440)
+	if (val& ESR_IMCP) {
+		printf("Instruction");
+		mtspr(ESR, val & ~ESR_IMCP);
+	} else {
+		printf("Data");
+	}
+	printf(" machine check.\n");
+
+#elif defined(CONFIG_440)
+	if (val& ESR_IMCP){
+		printf("Instruction Synchronous Machine Check exception\n");
+		mtspr(SPRN_ESR, val & ~ESR_IMCP);
+	} else {
+		val = mfspr(MCSR);
+		if (val & MCSR_IB)
+			printf("Instruction Read PLB Error\n");
+		if (val & MCSR_DRB)
+			printf("Data Read PLB Error\n");
+		if (val & MCSR_DWB)
+			printf("Data Write PLB Error\n");
+		if (val & MCSR_TLBP)
+			printf("TLB Parity Error\n");
+		if (val & MCSR_ICP){
+			/*flush_instruction_cache(); */
+			printf("I-Cache Parity Error\n");
+		}
+		if (val & MCSR_DCSP)
+			printf("D-Cache Search Parity Error\n");
+		if (val & MCSR_DCFP)
+			printf("D-Cache Flush Parity Error\n");
+		if (val & MCSR_IMPE)
+			printf("Machine Check exception is imprecise\n");
+
+		/* Clear MCSR */
+		mtspr(SPRN_MCSR, val);
+	}
+#if defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
+	mfsdram(DDR0_00, val) ;
+	printf("DDR0: DDR0_00 %p\n", val);
+	val = (val >> 16) & 0xff;
+	if (val & 0x80)
+		printf("DDR0: At least one interrupt active\n");
+	if (val & 0x40)
+		printf("DDR0: DRAM initialization complete.\n");
+	if (val & 0x20)
+		printf("DDR0: Multiple uncorrectable ECC events.\n");
+	if (val & 0x10)
+		printf("DDR0: Single uncorrectable ECC event.\n");
+	if (val & 0x08)
+		printf("DDR0: Multiple correctable ECC events.\n");
+	if (val & 0x04)
+		printf("DDR0: Single correctable ECC event.\n");
+	if (val & 0x02)
+		printf("Multiple accesses outside the defined"
+		       " physical memory space detected\n");
+	if (val & 0x01)
+		printf("DDR0: Single access outside the defined"
+		       " physical memory space detected.\n");
+
+	mfsdram(DDR0_01, val);
+	val = (val >> 8) & 0x7;
+	switch (val ) {
+	case 0:
+		printf("DDR0: Write Out-of-Range command\n");
+		break;
+	case 1:
+		printf("DDR0: Read Out-of-Range command\n");
 		break;
-	case (0x80000000>>13):
-		printf("Transfer error ack signal\n");
+	case 2:
+		printf("DDR0: Masked write Out-of-Range command\n");
 		break;
-	case (0x80000000>>14):
-		printf("Data parity signal\n");
+	case 4:
+		printf("DDR0: Wrap write Out-of-Range command\n");
 		break;
-	case (0x80000000>>15):
-		printf("Address parity signal\n");
+	case 5:
+		printf("DDR0: Wrap read Out-of-Range command\n");
 		break;
 	default:
-		printf("Unknown values in msr\n");
+		mfsdram(DDR0_01, value2);
+		printf("DDR0: No DDR0 error know 0x%x %p\n", val, value2);
 	}
+	mfsdram(DDR0_23, val);
+	if ( (val >> 16) & 0xff)
+		printf("DDR0: Syndrome for correctable ECC event 0x%x\n",
+		       (val >> 16) & 0xff);
+	mfsdram(DDR0_23, val);
+	if ( (val >> 8) & 0xff)
+		printf("DDR0: Syndrome for uncorrectable ECC event 0x%x\n",
+		       (val >> 8) & 0xff);
+	mfsdram(DDR0_33, val);
+	if (val)
+		printf("DDR0: Address of command that caused an "
+		       "Out-of-Range interrupt %p\n", val);
+	mfsdram(DDR0_34, val);
+	if (val)
+		printf("DDR0: Address of uncorrectable ECC event %p\n", val);
+	mfsdram(DDR0_35, val);
+	if (val)
+		printf("DDR0: Address of uncorrectable ECC event %p\n", val);
+	mfsdram(DDR0_36, val);
+	if (val)
+		printf("DDR0: Data of uncorrectable ECC event 0x%08x\n", val);
+	mfsdram(DDR0_37, val);
+	if (val)
+		printf("DDR0: Data of uncorrectable ECC event 0x%08x\n", val);
+	mfsdram(DDR0_38, val);
+	if (val)
+		printf("DDR0: Address of correctable ECC event %p\n", val);
+	mfsdram(DDR0_39, val);
+	if (val)
+		printf("DDR0: Address of correctable ECC event %p\n", val);
+	mfsdram(DDR0_40, val);
+	if (val)
+		printf("DDR0: Data of correctable ECC event 0x%08x\n", val);
+	mfsdram(DDR0_41, val);
+	if (val)
+		printf("DDR0: Data of correctable ECC event 0x%08x\n", val);
+#endif /* CONFIG_440EPX */
+#endif /* CONFIG_440 */
 	show_regs(regs);
 	print_backtrace((unsigned long *)regs->gpr[1]);
 	panic("machine check");
@@ -224,7 +332,7 @@ ProgramCheckException(struct pt_regs *regs)
 }
 
 void
-PITException(struct pt_regs *regs)
+DecrementerPITException(struct pt_regs *regs)
 {
 	/*
 	 * Reset PIT interrupt
@@ -272,17 +380,17 @@ addr_probe(uint *addr)
 
 	__asm__ __volatile__(			\
 		"1:	lwz %0,0(%1)\n"		\
-						"	eieio\n"		\
-						"	li %0,0\n"		\
-						"2:\n"				\
-						".section .fixup,\"ax\"\n"	\
-						"3:	li %0,-1\n"		\
-						"	b 2b\n"			\
-						".section __ex_table,\"a\"\n"	\
-						"	.align 2\n"		\
-						"	.long 1b,3b\n"		\
-						".text"				\
-						: "=r" (retval) : "r"(addr));
+		"	eieio\n"		\
+		"	li %0,0\n"		\
+		"2:\n"				\
+		".section .fixup,\"ax\"\n"	\
+		"3:	li %0,-1\n"		\
+		"	b 2b\n"			\
+		".section __ex_table,\"a\"\n"	\
+		"	.align 2\n"		\
+		"	.long 1b,3b\n"		\
+		".text"				\
+		: "=r" (retval) : "r"(addr));
 
 	return (retval);
 #endif