Initial revision

4 files changed, 1034 insertions, 0 deletions

diff --git a/board/pcippc2/cpc710_init_ram.c b/board/pcippc2/cpc710_init_ram.c
new file mode 100644
index 0000000..57ed8f0
--- /dev/null
+++ b/board/pcippc2/cpc710_init_ram.c
@@ -0,0 +1,254 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+
+#include "pcippc2.h"
+#include "i2c.h"
+
+typedef struct cpc710_mem_org_s
+{
+  u8		rows;
+  u8		cols;
+  u8		banks2;
+  u8		org;
+} cpc710_mem_org_t;
+
+static int		cpc710_compute_mcer	(u32 *		mcer,
+						 unsigned long *
+								size,
+						 unsigned int	sdram);
+static int		cpc710_eeprom_checksum	(unsigned int	sdram);
+static u8		cpc710_eeprom_read	(unsigned int	sdram,
+						 unsigned int	offset);
+
+static u32		cpc710_mcer_mem [] =
+{
+  0x000003f3,	/* 18 lines,    4 Mb */
+  0x000003e3,	/* 19 lines,    8 Mb */
+  0x000003c3,	/* 20 lines,   16 Mb */
+  0x00000383,	/* 21 lines,   32 Mb */
+  0x00000303,	/* 22 lines,   64 Mb */
+  0x00000203,	/* 23 lines,  128 Mb */
+  0x00000003,	/* 24 lines,  256 Mb */
+  0x00000002,	/* 25 lines,  512 Mb */
+  0x00000001	/* 26 lines, 1024 Mb */
+};
+static cpc710_mem_org_t	cpc710_mem_org [] =
+{
+  { 0x0c, 0x09, 0x02, 0x00 },	/* 0000: 12/ 9/2 */
+  { 0x0d, 0x09, 0x02, 0x00 },	/* 0000: 13/ 9/2 */
+  { 0x0d, 0x0a, 0x02, 0x00 },	/* 0000: 13/10/2 */
+  { 0x0d, 0x0b, 0x02, 0x00 },	/* 0000: 13/11/2 */
+  { 0x0d, 0x0c, 0x02, 0x00 },	/* 0000: 13/12/2 */
+  { 0x0e, 0x0c, 0x02, 0x00 },	/* 0000: 14/12/2 */
+  { 0x0b, 0x08, 0x02, 0x01 },	/* 0001: 11/ 8/2 */
+  { 0x0b, 0x09, 0x01, 0x02 },	/* 0010: 11/ 9/1 */
+  { 0x0b, 0x0a, 0x01, 0x03 },	/* 0011: 11/10/1 */
+  { 0x0c, 0x08, 0x02, 0x04 },	/* 0100: 12/ 8/2 */
+  { 0x0c, 0x0a, 0x02, 0x05 },	/* 0101: 12/10/2 */
+  { 0x0d, 0x08, 0x01, 0x06 },	/* 0110: 13/ 8/1 */
+  { 0x0d, 0x08, 0x02, 0x07 },	/* 0111: 13/ 8/2 */
+  { 0x0d, 0x09, 0x01, 0x08 },	/* 1000: 13/ 9/1 */
+  { 0x0d, 0x0a, 0x01, 0x09 },	/* 1001: 13/10/1 */
+  { 0x0b, 0x08, 0x01, 0x0a },	/* 1010: 11/ 8/1 */
+  { 0x0c, 0x08, 0x01, 0x0b },	/* 1011: 12/ 8/1 */
+  { 0x0c, 0x09, 0x01, 0x0c },	/* 1100: 12/ 9/1 */
+  { 0x0e, 0x09, 0x02, 0x0d },	/* 1101: 14/ 9/2 */
+  { 0x0e, 0x0a, 0x02, 0x0e },	/* 1110: 14/10/2 */
+  { 0x0e, 0x0b, 0x02, 0x0f } 	/* 1111: 14/11/2 */
+};
+
+unsigned long cpc710_ram_init (void)
+{
+  unsigned long 	memsize = 0;
+  unsigned long		bank_size;
+  u32			mcer;
+
+#ifndef CFG_RAMBOOT
+    /* Clear memory banks
+     */
+  out32(REG(SDRAM0, MCER0), 0);
+  out32(REG(SDRAM0, MCER1), 0);
+  out32(REG(SDRAM0, MCER2), 0);
+  out32(REG(SDRAM0, MCER3), 0);
+  out32(REG(SDRAM0, MCER4), 0);
+  out32(REG(SDRAM0, MCER5), 0);
+  out32(REG(SDRAM0, MCER6), 0);
+  out32(REG(SDRAM0, MCER7), 0);
+  iobarrier_rw();
+
+    /* Disable memory
+     */
+  out32(REG(SDRAM0,MCCR), 0x13b06000);
+  iobarrier_rw();
+#endif
+
+    /* Only the first memory bank is initialised now
+     */
+  if (! cpc710_compute_mcer(& mcer, & bank_size, 0))
+  {
+    puts("Unsupported SDRAM type !\n");
+    hang();
+  }
+  memsize += bank_size;
+#ifndef CFG_RAMBOOT
+    /* Enable bank, zero start
+     */
+  out32(REG(SDRAM0, MCER0), mcer | 0x80000000);
+  iobarrier_rw();
+#endif
+
+#ifndef CFG_RAMBOOT
+    /* Enable memory
+     */
+  out32(REG(SDRAM0, MCCR), in32(REG(SDRAM0, MCCR)) | 0x80000000);
+
+    /* Wait until initialisation finished
+     */
+  while (! (in32 (REG(SDRAM0, MCCR)) & 0x20000000))
+  {
+    iobarrier_rw();
+  }
+
+    /* Clear Memory Error Status and Address registers
+     */
+  out32(REG(SDRAM0, MESR), 0);
+  out32(REG(SDRAM0, MEAR), 0);
+  iobarrier_rw();
+
+    /* ECC is not configured now
+     */
+#endif
+
+    /* Memory size counter
+     */
+  out32(REG(CPC0, RGBAN1), memsize);
+
+  return memsize;
+}
+
+static int cpc710_compute_mcer (
+  u32 *			mcer,
+  unsigned long	*	size,
+  unsigned int		sdram)
+{
+  u8			rows;
+  u8			cols;
+  u8			banks2;
+  unsigned int		lines;
+  u32			mc = 0;
+  unsigned int		i;
+  cpc710_mem_org_t *	org = 0;
+
+
+  if (! i2c_reset())
+  {
+    puts("Can't reset I2C!\n");
+    hang();
+  }
+
+  if (! cpc710_eeprom_checksum(sdram))
+  {
+    puts("Invalid EEPROM checksum !\n");
+    hang();
+  }
+
+  rows   = cpc710_eeprom_read(sdram, 3);
+  cols   = cpc710_eeprom_read(sdram, 4);
+    /* Can be 2 or 4 banks; divide by 2
+     */
+  banks2 = cpc710_eeprom_read(sdram, 17) / 2;
+
+  lines = rows + cols + banks2;
+
+  if (lines < 18 || lines > 26)
+  {
+      /* Unsupported configuration
+       */
+    return 0;
+  }
+
+
+  mc |= cpc710_mcer_mem [lines - 18] << 6;
+
+  for (i = 0; i < sizeof(cpc710_mem_org) / sizeof(cpc710_mem_org_t); i++)
+  {
+    cpc710_mem_org_t *	corg = cpc710_mem_org + i;
+
+    if (corg->rows == rows && corg->cols == cols && corg->banks2 == banks2)
+    {
+      org = corg;
+
+      break;
+    }
+  }
+
+  if (! org)
+  {
+      /* Unsupported configuration
+       */
+    return 0;
+  }
+
+  mc |= (u32) org->org << 2;
+
+    /* Supported configuration
+     */
+  *mcer = mc;
+  *size = 1l << (lines + 4);
+
+  return 1;
+}
+
+static int cpc710_eeprom_checksum (
+  unsigned int		sdram)
+{
+  u8			sum = 0;
+  unsigned int		i;
+
+  for (i = 0; i < 63; i++)
+  {
+    sum += cpc710_eeprom_read(sdram, i);
+  }
+
+  return sum == cpc710_eeprom_read(sdram, 63);
+}
+
+static u8 cpc710_eeprom_read (
+  unsigned int		sdram,
+  unsigned int		offset)
+{
+  u8			dev = (sdram << 1) | 0xa0;
+  u8			data;
+
+  if (! i2c_read_byte(& data, dev,offset))
+  {
+    puts("I2C error !\n");
+    hang();
+  }
+
+  return data;
+}
diff --git a/board/pcippc2/cpc710_pci.c b/board/pcippc2/cpc710_pci.c
new file mode 100644
index 0000000..9975cda
--- /dev/null
+++ b/board/pcippc2/cpc710_pci.c
@@ -0,0 +1,309 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+#include <pci.h>
+
+#include "hardware.h"
+#include "pcippc2.h"
+
+struct pci_controller local_hose, cpci_hose;
+
+static u32	cpc710_mapped_ram;
+
+  /* Enable PCI retry timeouts
+   */
+void cpc710_pci_enable_timeout (void)
+{
+  out32(BRIDGE(LOCAL, CFGADDR), 0x50000080);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, CFGDATA), 0x32000000);
+  iobarrier_rw();
+
+  out32(BRIDGE(CPCI, CFGADDR), 0x50000180);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), 0x32000000);
+  iobarrier_rw();
+}
+
+void cpc710_pci_init (void)
+{
+  u32			sdram_size = pcippc2_sdram_size();
+
+  cpc710_mapped_ram = sdram_size < PCI_MEMORY_MAXSIZE ?
+                      sdram_size : PCI_MEMORY_MAXSIZE;
+
+    /* Select the local PCI
+     */
+  out32(REG(CPC0, PCICNFR), 0x80000002);
+  iobarrier_rw();
+
+  out32(REG(CPC0, PCIBAR), BRIDGE_LOCAL_PHYS);
+  iobarrier_rw();
+
+    /* Enable PCI bridge address decoding
+     */
+  out32(REG(CPC0, PCIENB), 0x80000000);
+  iobarrier_rw();
+
+    /* Select the CPCI bridge
+     */
+  out32(REG(CPC0, PCICNFR), 0x80000003);
+  iobarrier_rw();
+
+  out32(REG(CPC0, PCIBAR), BRIDGE_CPCI_PHYS);
+  iobarrier_rw();
+
+    /* Enable PCI bridge address decoding
+     */
+  out32(REG(CPC0, PCIENB), 0x80000000);
+  iobarrier_rw();
+
+    /* Disable configuration accesses
+     */
+  out32(REG(CPC0, PCICNFR), 0x80000000);
+  iobarrier_rw();
+
+    /* Initialise the local PCI
+     */
+  out32(BRIDGE(LOCAL, CRR), 0x7c000000);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, PCIDG), 0x40000000);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, PIBAR), BRIDGE_LOCAL_IO_BUS);
+  out32(BRIDGE(LOCAL, SIBAR), BRIDGE_LOCAL_IO_PHYS);
+  out32(BRIDGE(LOCAL, IOSIZE), -BRIDGE_LOCAL_IO_SIZE);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, PMBAR), BRIDGE_LOCAL_MEM_BUS);
+  out32(BRIDGE(LOCAL, SMBAR), BRIDGE_LOCAL_MEM_PHYS);
+  out32(BRIDGE(LOCAL, MSIZE), -BRIDGE_LOCAL_MEM_SIZE);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, PR), 0x00ffe000);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, ACR), 0xfe000000);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, PSBAR), PCI_MEMORY_BUS >> 24);
+  out32(BRIDGE(LOCAL, BARPS), PCI_MEMORY_PHYS >> 24);
+  out32(BRIDGE(LOCAL, PSSIZE), 256 - (cpc710_mapped_ram >> 24));
+  iobarrier_rw();
+
+    /* Initialise the CPCI bridge
+     */
+  out32(BRIDGE(CPCI, CRR), 0x7c000000);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, PCIDG), 0xC0000000);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, PIBAR), BRIDGE_CPCI_IO_BUS);
+  out32(BRIDGE(CPCI, SIBAR), BRIDGE_CPCI_IO_PHYS);
+  out32(BRIDGE(CPCI, IOSIZE), -BRIDGE_CPCI_IO_SIZE);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, PMBAR), BRIDGE_CPCI_MEM_BUS);
+  out32(BRIDGE(CPCI, SMBAR), BRIDGE_CPCI_MEM_PHYS);
+  out32(BRIDGE(CPCI, MSIZE), -BRIDGE_CPCI_MEM_SIZE);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, PR), 0x80ffe000);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, ACR), 0xdf000000);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, PSBAR), PCI_MEMORY_BUS >> 24);
+  out32(BRIDGE(CPCI, BARPS), PCI_MEMORY_PHYS >> 24);
+  out32(BRIDGE(CPCI, PSSIZE), 256 - (cpc710_mapped_ram >> 24));
+  iobarrier_rw();
+
+    /* Local PCI
+     */
+
+  out32(BRIDGE(LOCAL, CFGADDR), 0x04000080);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, CFGDATA), 0x56010000);
+  iobarrier_rw();
+
+  out32(BRIDGE(LOCAL, CFGADDR), 0x0c000080);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, CFGDATA), PCI_LATENCY_TIMER_VAL << 16);
+  iobarrier_rw();
+
+    /* Set bus and subbus numbers
+     */
+  out32(BRIDGE(LOCAL, CFGADDR), 0x40000080);
+  iobarrier_rw();
+  out32(BRIDGE(LOCAL, CFGDATA), 0x00000000);
+  iobarrier_rw();
+
+  out32(BRIDGE(LOCAL, CFGADDR), 0x50000080);
+  iobarrier_rw();
+    /* PCI retry timeouts will be enabled later
+     */
+  out32(BRIDGE(LOCAL, CFGDATA), 0x00000000);
+  iobarrier_rw();
+
+    /* CPCI
+     */
+
+    /* Set bus and subbus numbers
+     */
+  out32(BRIDGE(CPCI, CFGADDR), 0x40000080);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), 0x01010000);
+  iobarrier_rw();
+
+  out32(BRIDGE(CPCI, CFGADDR), 0x04000180);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), 0x56010000);
+  iobarrier_rw();
+
+  out32(BRIDGE(CPCI, CFGADDR), 0x0c000180);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), PCI_LATENCY_TIMER_VAL << 16);
+  iobarrier_rw();
+
+    /* Write to the PSBAR */
+  out32(BRIDGE(CPCI, CFGADDR), 0x10000180);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), cpu_to_le32(PCI_MEMORY_BUS));
+  iobarrier_rw();
+
+    /* Set bus and subbus numbers
+     */
+  out32(BRIDGE(CPCI, CFGADDR), 0x40000180);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), 0x01ff0000);
+  iobarrier_rw();
+
+  out32(BRIDGE(CPCI, CFGADDR), 0x50000180);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CFGDATA), 0x32000000);
+    /* PCI retry timeouts will be enabled later
+     */
+  out32(BRIDGE(CPCI, CFGDATA), 0x00000000);
+  iobarrier_rw();
+
+    /* Remove reset on the PCI buses
+     */
+  out32(BRIDGE(LOCAL, CRR), 0xfc000000);
+  iobarrier_rw();
+  out32(BRIDGE(CPCI, CRR), 0xfc000000);
+  iobarrier_rw();
+
+  local_hose.first_busno = 0;
+  local_hose.last_busno = 0xff;
+
+  /* System memory space */
+  pci_set_region(local_hose.regions + 0,
+		 PCI_MEMORY_BUS,
+		 PCI_MEMORY_PHYS,
+		 PCI_MEMORY_MAXSIZE,
+		 PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+  /* PCI memory space */
+  pci_set_region(local_hose.regions + 1,
+		 BRIDGE_LOCAL_MEM_BUS,
+		 BRIDGE_LOCAL_MEM_PHYS,
+		 BRIDGE_LOCAL_MEM_SIZE,
+		 PCI_REGION_MEM);
+
+  /* PCI I/O space */
+  pci_set_region(local_hose.regions + 2,
+		 BRIDGE_LOCAL_IO_BUS,
+		 BRIDGE_LOCAL_IO_PHYS,
+		 BRIDGE_LOCAL_IO_SIZE,
+		 PCI_REGION_IO);
+
+  local_hose.region_count = 3;
+
+  pci_setup_indirect(&local_hose,
+		     BRIDGE_LOCAL_PHYS + HW_BRIDGE_CFGADDR,
+		     BRIDGE_LOCAL_PHYS + HW_BRIDGE_CFGDATA);
+
+  pci_register_hose(&local_hose);
+
+  /* Initialize PCI32 bus registers */
+  pci_hose_write_config_byte(&local_hose,
+			  PCI_BDF(local_hose.first_busno,0,0),
+			  CPC710_BUS_NUMBER,
+			  local_hose.first_busno);
+  pci_hose_write_config_byte(&local_hose,
+			  PCI_BDF(local_hose.first_busno,0,0),
+			  CPC710_SUB_BUS_NUMBER,
+			  local_hose.last_busno);
+
+  local_hose.last_busno = pci_hose_scan(&local_hose);
+
+  /* Write out correct max subordinate bus number for local hose */
+  pci_hose_write_config_byte(&local_hose,
+			  PCI_BDF(local_hose.first_busno,0,0),
+			  CPC710_SUB_BUS_NUMBER,
+			  local_hose.last_busno);
+
+  cpci_hose.first_busno = local_hose.last_busno + 1;
+  cpci_hose.last_busno = 0xff;
+
+  /* System memory space */
+  pci_set_region(cpci_hose.regions + 0,
+		 PCI_MEMORY_BUS,
+		 PCI_MEMORY_PHYS,
+		 PCI_MEMORY_MAXSIZE,
+		 PCI_REGION_MEMORY);
+
+  /* PCI memory space */
+  pci_set_region(cpci_hose.regions + 1,
+		 BRIDGE_CPCI_MEM_BUS,
+		 BRIDGE_CPCI_MEM_PHYS,
+		 BRIDGE_CPCI_MEM_SIZE,
+		 PCI_REGION_MEM);
+
+  /* PCI I/O space */
+  pci_set_region(cpci_hose.regions + 2,
+		 BRIDGE_CPCI_IO_BUS,
+		 BRIDGE_CPCI_IO_PHYS,
+		 BRIDGE_CPCI_IO_SIZE,
+		 PCI_REGION_IO);
+
+  cpci_hose.region_count = 3;
+
+  pci_setup_indirect(&cpci_hose,
+		     BRIDGE_CPCI_PHYS + HW_BRIDGE_CFGADDR,
+		     BRIDGE_CPCI_PHYS + HW_BRIDGE_CFGDATA);
+
+  pci_register_hose(&cpci_hose);
+
+  /* Initialize PCI64 bus registers */
+  pci_hose_write_config_byte(&cpci_hose,
+			  PCI_BDF(cpci_hose.first_busno,0,0),
+			  CPC710_BUS_NUMBER,
+			  cpci_hose.first_busno);
+  pci_hose_write_config_byte(&cpci_hose,
+			  PCI_BDF(cpci_hose.first_busno,0,0),
+			  CPC710_SUB_BUS_NUMBER,
+			  cpci_hose.last_busno);
+
+  cpci_hose.last_busno = pci_hose_scan(&cpci_hose);
+
+  /* Write out correct max subordinate bus number for cpci hose */
+  pci_hose_write_config_byte(&cpci_hose,
+			  PCI_BDF(cpci_hose.first_busno,0,0),
+			  CPC710_SUB_BUS_NUMBER,
+			  cpci_hose.last_busno);
+}
diff --git a/board/pcippc2/i2c.c b/board/pcippc2/i2c.c
new file mode 100644
index 0000000..36b1d0f
--- /dev/null
+++ b/board/pcippc2/i2c.c
@@ -0,0 +1,257 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <asm/io.h>
+
+#include "hardware.h"
+#include "i2c.h"
+
+static void		i2c_start	(void);
+static void		i2c_stop	(void);
+static int		i2c_write	(u8		data);
+static void		i2c_read	(u8 *		data);
+
+static inline void	i2c_port_start  (void);
+static inline void	i2c_clock	(unsigned int	val);
+static inline void	i2c_data	(unsigned int	val);
+static inline unsigned int
+			i2c_in		(void);
+static inline void	i2c_write_bit	(unsigned int	val);
+static inline unsigned int
+			i2c_read_bit	(void);
+
+static inline void	i2c_udelay	(unsigned int	time);
+
+int i2c_read_byte (
+  u8 *			data,
+  u8			dev,
+  u8			offset)
+{
+  int			err = 0;
+
+  i2c_start();
+
+  err = ! i2c_write(dev);
+
+  if (! err)
+  {
+    err = ! i2c_write(offset);
+  }
+
+  if (! err)
+  {
+    i2c_start();
+  }
+
+  if (! err)
+  {
+    err = ! i2c_write(dev | 0x01);
+  }
+
+  if (! err)
+  {
+    i2c_read(data);
+  }
+
+  i2c_stop();
+
+  return ! err;
+}
+
+static inline void i2c_udelay (
+  unsigned int		time)
+{
+  int			v;
+
+  asm volatile("mtdec %0" : : "r" (time * ((CFG_BUS_CLK / 4) / 1000000)));
+
+  do
+  {
+    asm volatile("isync; mfdec %0" : "=r" (v));
+  } while (v >= 0);
+}
+
+  /* Low-level hardware access
+   */
+
+#define BIT_GPDATA		0x80000000
+#define BIT_GPCLK		0x40000000
+
+static inline void i2c_port_start (void)
+{
+  out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) & ~(BIT_GPCLK | BIT_GPDATA));
+  out32(REG(CPC0, GPOUT), in32(REG(CPC0, GPOUT)) & ~(BIT_GPCLK | BIT_GPDATA));
+  iobarrier_rw();
+
+  i2c_udelay(1);
+}
+
+static inline void i2c_clock (
+  unsigned int		val)
+{
+  if (val)
+  {
+    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) & ~BIT_GPCLK);
+  }
+  else
+  {
+    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) | BIT_GPCLK);
+  }
+
+  iobarrier_rw();
+
+  i2c_udelay(1);
+}
+
+static inline void i2c_data (
+  unsigned int		val)
+{
+  if (val)
+  {
+    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) & ~BIT_GPDATA);
+  }
+  else
+  {
+    out32(REG(CPC0, GPDIR), in32(REG(CPC0, GPDIR)) | BIT_GPDATA);
+  }
+
+  iobarrier_rw();
+
+  i2c_udelay(1);
+}
+
+static inline unsigned int i2c_in (void)
+{
+  unsigned int		val = ((in32(REG(CPC0, GPIN)) & BIT_GPDATA) != 0)?1:0;
+
+  iobarrier_rw();
+
+  return val;
+}
+
+
+  /* Protocol implementation
+   */
+
+static inline void i2c_write_bit (
+  unsigned int		val)
+{
+  i2c_data(val);
+  i2c_udelay(10);
+  i2c_clock(1);
+  i2c_udelay(10);
+  i2c_clock(0);
+  i2c_udelay(10);
+}
+
+static inline unsigned int i2c_read_bit (void)
+{
+  unsigned int		val;
+
+  i2c_data(1);
+  i2c_udelay(10);
+
+  i2c_clock(1);
+  i2c_udelay(10);
+
+  val = i2c_in();
+
+  i2c_clock(0);
+  i2c_udelay(10);
+
+  return val;
+}
+
+unsigned int i2c_reset (void)
+{
+  unsigned int		val;
+  int i;
+
+  i2c_port_start();
+
+  i=0;
+  do {
+    i2c_udelay(10);
+    i2c_clock(0);
+    i2c_udelay(10);
+    i2c_clock(1);
+    i2c_udelay(10);
+    val = i2c_in();
+    i++;
+  }  while ((i<9)&&(val==0));
+  return (val);
+}
+
+
+static void i2c_start (void)
+{
+  i2c_data(1);
+  i2c_clock(1);
+  i2c_udelay(10);
+  i2c_data(0);
+  i2c_udelay(10);
+  i2c_clock(0);
+  i2c_udelay(10);
+}
+
+static void i2c_stop (void)
+{
+  i2c_data(0);
+  i2c_udelay(10);
+  i2c_clock(1);
+  i2c_udelay(10);
+  i2c_data(1);
+  i2c_udelay(10);
+}
+
+static int i2c_write (
+  u8			data)
+{
+  unsigned int		i;
+
+  for (i = 0; i < 8; i++)
+  {
+    i2c_write_bit(data >> 7);
+    data <<= 1;
+  }
+
+  return i2c_read_bit() == 0;
+}
+
+static void i2c_read (
+  u8 *			data)
+{
+  unsigned int		i;
+  u8			val = 0;
+
+  for (i = 0; i < 8; i++)
+  {
+    val <<= 1;
+    val |= i2c_read_bit();
+  }
+
+  *data = val;
+  i2c_write_bit(1); /* NoAck */
+}
diff --git a/board/pcippc2/pcippc2.c b/board/pcippc2/pcippc2.c
new file mode 100644
index 0000000..e1b065b
--- /dev/null
+++ b/board/pcippc2/pcippc2.c
@@ -0,0 +1,214 @@
+/*
+ * (C) Copyright 2002
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <config.h>
+#include <common.h>
+#include <command.h>
+#include <asm/io.h>
+#include <linux/mtd/doc2000.h>
+#include <watchdog.h>
+#include <pci.h>
+
+#include "hardware.h"
+#include "pcippc2.h"
+#include "sconsole.h"
+#include "fpga_serial.h"
+
+#if defined(CONFIG_WATCHDOG)
+
+static int pcippc2_wdt_init_done = 0;
+
+void pcippc2_wdt_init (void);
+
+#endif
+
+  /* Check board identity
+   */
+int checkboard (void)
+{
+#ifdef CONFIG_PCIPPC2
+	puts ("Board: Gespac PCIPPC-2\n");
+#else
+	puts ("Board: Gespac PCIPPC-6\n");
+#endif
+	return 0;
+}
+
+  /* RAM size is stored in CPC0_RGBAN1
+   */
+u32 pcippc2_sdram_size (void)
+{
+	return in32 (REG (CPC0, RGBAN1));
+}
+
+long initdram (int board_type)
+{
+	return cpc710_ram_init ();
+}
+
+void do_reset (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+	out32 (REG (CPC0, SPOR), 0);
+	iobarrier_rw ();
+	while (1);
+}
+
+int board_pre_init (void)
+{
+	out32 (REG (CPC0, RSTR), 0xC0000000);
+	iobarrier_rw ();
+
+	out32 (REG (CPC0, RSTR), 0xF0000000);
+	iobarrier_rw ();
+
+	out32 (REG (CPC0, UCTL), 0x00F80000);
+
+	out32 (REG (CPC0, SIOC0), 0x30000000);
+
+	out32 (REG (CPC0, ABCNTL), 0x00000000);
+
+	out32 (REG (CPC0, SESR), 0x00000000);
+	out32 (REG (CPC0, SEAR), 0x00000000);
+
+	/* Detect IBM Avignon CPC710 Revision */
+	if ((in32 (REG (CPC0, UCTL)) & 0x000000F0) == CPC710_TYPE_100P)
+		out32 (REG (CPC0, PGCHP), 0xA0000040);
+	else
+		out32 (REG (CPC0, PGCHP), 0x80800040);
+
+
+	out32 (REG (CPC0, ATAS), 0x709C2508);
+
+	iobarrier_rw ();
+
+	return 0;
+}
+
+void after_reloc (ulong dest_addr)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	/* Jump to the main U-Boot board init code
+	 */
+	board_init_r (gd, dest_addr);
+}
+
+int misc_init_r (void)
+{
+	pcippc2_fpga_init ();
+
+#if defined(CONFIG_WATCHDOG)
+	pcippc2_wdt_init ();
+#endif
+
+	fpga_serial_init (sconsole_get_baudrate ());
+
+	sconsole_putc   = fpga_serial_putc;
+	sconsole_puts   = fpga_serial_puts;
+	sconsole_getc   = fpga_serial_getc;
+	sconsole_tstc   = fpga_serial_tstc;
+	sconsole_setbrg = fpga_serial_setbrg;
+
+	sconsole_flush ();
+	return (0);
+}
+
+void pci_init (void)
+{
+	cpc710_pci_init ();
+
+	/* FPGA requires no retry timeouts to be enabled
+	 */
+	cpc710_pci_enable_timeout ();
+}
+
+void doc_init (void)
+{
+	doc_probe (pcippc2_fpga1_phys + HW_FPGA1_DOC);
+}
+
+#if defined(CONFIG_WATCHDOG)
+
+void pcippc2_wdt_init (void)
+{
+	out16r (FPGA (WDT, PROG), 0xffff);
+	out8 (FPGA (WDT, CTRL), 0x1);
+
+	pcippc2_wdt_init_done = 1;
+}
+
+void pcippc2_wdt_done (void)
+{
+	out8 (FPGA (WDT, CTRL), 0x0);
+
+	pcippc2_wdt_init_done = 0;
+}
+
+void pcippc2_wdt_reset (void)
+{
+	if (pcippc2_wdt_init_done == 1)
+		out8 (FPGA (WDT, REFRESH), 0x56);
+}
+
+void watchdog_reset (void)
+{
+	int re_enable = disable_interrupts ();
+
+	pcippc2_wdt_reset ();
+	if (re_enable)
+		enable_interrupts ();
+}
+
+#if (CONFIG_COMMANDS & CFG_CMD_BSP)
+int do_wd (cmd_tbl_t *cmdtp, bd_t *bd, int flag, int argc, char *argv[])
+{
+	switch (argc) {
+	case 1:
+		printf ("Watchdog timer status is %s\n",
+			pcippc2_wdt_init_done == 1 ? "on" : "off");
+
+		return 0;
+	case 2:
+		if (!strcmp(argv[1],"on")) {
+			pcippc2_wdt_init();
+			printf("Watchdog timer now is on\n");
+
+			return 0;
+
+		} else if (!strcmp(argv[1],"off")) {
+			pcippc2_wdt_done();
+			printf("Watchdog timer now is off\n");
+
+			return 0;
+
+		} else
+			break;
+	default:
+		break;
+	}
+	printf ("Usage:\n%s\n", cmdtp->usage);
+	return 1;
+}
+
+#endif	/* CFG_CMD_BSP */
+#endif	/* CONFIG_WATCHDOG */