Add PCI support for MPC8250 Boards (PM825 module)

9 files changed, 481 insertions, 15 deletions

diff --git a/CHANGELOG b/CHANGELOG
index 35a6e4a..b80fed3 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -2,6 +2,8 @@
 Changes since U-Boot 0.2.2:
 ======================================================================
 
+* Add PCI support for MPC8250 Boards (PM825 module)
+
 * Patch by Stefan Roese, 25 Mar 2003:
   - PCI405 update.
 
diff --git a/board/pm826/pm826.c b/board/pm826/pm826.c
index 3ba8ca9..926d74b 100644
--- a/board/pm826/pm826.c
+++ b/board/pm826/pm826.c
@@ -24,6 +24,7 @@
 #include <common.h>
 #include <ioports.h>
 #include <mpc8260.h>
+#include <pci.h>
 
 /*
  * I/O Port configuration table
@@ -349,3 +350,12 @@ void doc_init (void)
 	doc_probe (CFG_DOC_BASE);
 }
 #endif
+
+struct pci_controller hose;
+
+extern void pci_mpc8250_init(struct pci_controller *);
+
+void pci_init_board(void)
+{
+	pci_mpc8250_init(&hose);
+}
diff --git a/common/cmd_boot.c b/common/cmd_boot.c
index 93ab10f..2604e41 100644
--- a/common/cmd_boot.c
+++ b/common/cmd_boot.c
@@ -50,6 +50,7 @@ static void print_num(const char *, ulong);
 
 #ifndef CONFIG_ARM	/* PowerPC and other */
 
+#ifdef CONFIG_PPC
 static void print_str(const char *, const char *);
 
 int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
@@ -110,6 +111,34 @@ int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
 	return 0;
 }
 
+#else /* MIPS */
+
+int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	int i;
+	bd_t *bd = gd->bd;
+
+	print_num ("boot_params",	(ulong)bd->bi_boot_params);
+	print_num ("memstart",		(ulong)bd->bi_memstart);
+	print_num ("memsize",		(ulong)bd->bi_memsize);
+	print_num ("flashstart",	(ulong)bd->bi_flashstart);
+	print_num ("flashsize",		(ulong)bd->bi_flashsize);
+	print_num ("flashoffset",	(ulong)bd->bi_flashoffset);
+
+	printf ("ethaddr     =");
+	for (i=0; i<6; ++i) {
+		printf ("%c%02X", i ? ':' : ' ', bd->bi_enetaddr[i]);
+	}
+	printf ("\nip_addr     = ");
+	print_IPaddr (bd->bi_ip_addr);
+	printf ("\nbaudrate    = %d bps\n", bd->bi_baudrate);
+
+	return 0;
+}
+#endif  /* MIPS */
+
 #else	/* ARM */
 
 int do_bdinfo ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
@@ -150,12 +179,12 @@ static void print_num(const char *name, ulong value)
 	printf ("%-12s= 0x%08lX\n", name, value);
 }
 
-#ifndef	CONFIG_ARM
+#ifdef CONFIG_PPC
 static void print_str(const char *name, const char *str)
 {
 	printf ("%-12s= %6s MHz\n", name, str);
 }
-#endif	/* CONFIG_ARM */
+#endif	/* CONFIG_PPC */
 
 #endif	/* CFG_CMD_BDI */
 
diff --git a/cpu/mpc8260/Makefile b/cpu/mpc8260/Makefile
index 80afc96..22d323e 100644
--- a/cpu/mpc8260/Makefile
+++ b/cpu/mpc8260/Makefile
@@ -28,7 +28,7 @@ LIB	= lib$(CPU).a
 START	= start.o kgdb.o
 OBJS	= traps.o serial_smc.o serial_scc.o cpu.o cpu_init.o speed.o \
 	  interrupts.o ether_scc.o ether_fcc.o i2c.o commproc.o \
-	  bedbug_603e.o status_led.o
+	  bedbug_603e.o status_led.o pci.o
 
 all:	.depend $(START) $(LIB)
 
diff --git a/cpu/mpc8260/pci.c b/cpu/mpc8260/pci.c
new file mode 100644
index 0000000..f9f1e27
--- /dev/null
+++ b/cpu/mpc8260/pci.c
@@ -0,0 +1,244 @@
+/*
+ * (C) Copyright 2003
+ * 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 <common.h>
+
+#ifdef CONFIG_PCI
+
+#include <pci.h>
+#include <asm/m8260_pci.h>
+
+/*
+ *   Local->PCI map (from CPU)                             controlled by
+ *   MPC826x master window
+ *
+ *   0x80000000 - 0xBFFFFFFF    Total CPU2PCI space        PCIBR0
+ *                       
+ *   0x80000000 - 0x8FFFFFFF    PCI Mem with prefetch      (Outbound ATU #1)
+ *   0x90000000 - 0x9FFFFFFF    PCI Mem w/o  prefetch      (Outbound ATU #2)
+ *   0xA0000000 - 0xAFFFFFFF    32-bit PCI IO              (Outbound ATU #3)
+ *                      
+ *   PCI->Local map (from PCI)
+ *   MPC826x slave window                                  controlled by
+ *
+ *   0x00000000 - 0x07FFFFFF    MPC826x local memory       (Inbound ATU #1)
+ */
+
+/* 
+ * Slave window that allows PCI masters to access MPC826x local memory. 
+ * This window is set up using the first set of Inbound ATU registers
+ */
+
+#define PCI_SLV_MEM_LOCAL	CFG_SDRAM_BASE		/* Local base */
+#define PCI_SLV_MEM_BUS		0x00000000		/* PCI base */
+#define PICMR0_MASK_ATTRIB	(PICMR_MASK_512MB | PICMR_ENABLE | \
+                          	 PICMR_PREFETCH_EN)
+
+/* 
+ * This is the window that allows the CPU to access PCI address space.
+ * It will be setup with the SIU PCIBR0 register. All three PCI master
+ * windows, which allow the CPU to access PCI prefetch, non prefetch,
+ * and IO space (see below), must all fit within this window. 
+ */
+
+#define PCI_MSTR_LOCAL		0x80000000		/* Local base */
+#define PCIMSK0_MASK		PCIMSK_1GB		/* Size of window */
+
+/* 
+ * Master window that allows the CPU to access PCI Memory (prefetch).
+ * This window will be setup with the first set of Outbound ATU registers
+ * in the bridge.
+ */
+
+#define PCI_MSTR_MEM_LOCAL	0x80000000          /* Local base */
+#define PCI_MSTR_MEM_BUS	0x80000000          /* PCI base   */
+#define CPU_PCI_MEM_START	PCI_MSTR_MEM_LOCAL
+#define PCI_MSTR_MEM_SIZE	0x10000000          /* 256MB */
+#define POCMR0_MASK_ATTRIB	(POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PREFETCH_EN)
+
+/* 
+ * Master window that allows the CPU to access PCI Memory (non-prefetch).
+ * This window will be setup with the second set of Outbound ATU registers
+ * in the bridge.
+ */
+
+#define PCI_MSTR_MEMIO_LOCAL    0x90000000          /* Local base */
+#define PCI_MSTR_MEMIO_BUS      0x90000000          /* PCI base   */
+#define CPU_PCI_MEMIO_START     PCI_MSTR_MEMIO_LOCAL
+#define PCI_MSTR_MEMIO_SIZE     0x10000000          /* 256MB */
+#define POCMR1_MASK_ATTRIB      (POCMR_MASK_256MB | POCMR_ENABLE)
+
+/* 
+ * Master window that allows the CPU to access PCI IO space.
+ * This window will be setup with the third set of Outbound ATU registers
+ * in the bridge.
+ */
+
+#define PCI_MSTR_IO_LOCAL       0xA0000000          /* Local base */
+#define PCI_MSTR_IO_BUS         0xA0000000          /* PCI base   */
+#define CPU_PCI_IO_START        PCI_MSTR_IO_LOCAL
+#define PCI_MSTR_IO_SIZE        0x10000000          /* 256MB */
+#define POCMR2_MASK_ATTRIB      (POCMR_MASK_256MB | POCMR_ENABLE | POCMR_PCI_IO)
+
+/* PCI bus configuration registers.
+ */
+
+#define PCI_CLASS_BRIDGE_CTLR	0x06
+
+
+static inline void  pci_outl(u32 addr, u32 data)
+{
+    *(volatile u32 *) addr = cpu_to_le32(data);
+}
+
+void pci_mpc8250_init(struct pci_controller *hose)
+{
+    u16 tempShort;
+    u32 immr_addr = CFG_IMMR;
+    volatile immap_t *immap = (immap_t *) CFG_IMMR;
+    pci_dev_t host_devno = PCI_BDF(0, 0, 0);
+
+    pci_setup_indirect(hose, CFG_IMMR + PCI_CFG_ADDR_REG,
+	                         CFG_IMMR + PCI_CFG_DATA_REG);
+
+    /* 
+     * Setting required to enable IRQ1-IRQ7 (SIUMCR [DPPC]), 
+     * and local bus for PCI (SIUMCR [LBPC]).
+     */
+    immap->im_siu_conf.sc_siumcr = 0x00640000;
+
+    /* Make PCI lowest priority */
+    /* Each 4 bits is a device bus request  and the MS 4bits 
+       is highest priority */
+    /* Bus               4bit value 
+	   ---               ----------
+       CPM high          0b0000
+       CPM middle        0b0001
+	   CPM low           0b0010
+       PCI reguest       0b0011
+       Reserved          0b0100
+       Reserved          0b0101
+       Internal Core     0b0110
+       External Master 1 0b0111
+       External Master 2 0b1000
+       External Master 3 0b1001
+       The rest are reserved */
+    immap->im_siu_conf.sc_ppc_alrh = 0x61207893;
+
+    /* Park bus on core while modifying PCI Bus accesses */
+    immap->im_siu_conf.sc_ppc_acr = 0x6;
+
+    /* 
+     * Set up master window that allows the CPU to access PCI space. This 
+     * window is set up using the first SIU PCIBR registers.
+     */
+    *(volatile unsigned long*)(immr_addr + M8265_PCIMSK0) = PCIMSK0_MASK;
+    *(volatile unsigned long*)(immr_addr + M8265_PCIBR0) =
+	    PCI_MSTR_LOCAL | PCIBR_ENABLE;
+
+    /* Release PCI RST (by default the PCI RST signal is held low)  */
+    pci_outl (immr_addr | PCI_GCR_REG, PCIGCR_PCI_BUS_EN);
+
+    /* give it some time */
+    udelay(1000);
+
+    /* 
+     * Set up master window that allows the CPU to access PCI Memory (prefetch) 
+     * space. This window is set up using the first set of Outbound ATU registers.
+     */
+    pci_outl (immr_addr | POTAR_REG0, PCI_MSTR_MEM_BUS >> 12);      /* PCI base */
+    pci_outl (immr_addr | POBAR_REG0, PCI_MSTR_MEM_LOCAL >> 12);    /* Local base */
+    pci_outl (immr_addr | POCMR_REG0, POCMR0_MASK_ATTRIB);    /* Size & attribute */
+
+    /* 
+     * Set up master window that allows the CPU to access PCI Memory (non-prefetch) 
+     * space. This window is set up using the second set of Outbound ATU registers.
+     */
+    pci_outl (immr_addr | POTAR_REG1, PCI_MSTR_MEMIO_BUS >> 12);    /* PCI base */
+    pci_outl (immr_addr | POBAR_REG1, PCI_MSTR_MEMIO_LOCAL >> 12);  /* Local base */
+    pci_outl (immr_addr | POCMR_REG1, POCMR1_MASK_ATTRIB);    /* Size & attribute */
+    
+    /* 
+     * Set up master window that allows the CPU to access PCI IO space. This window
+     * is set up using the third set of Outbound ATU registers.
+     */
+    pci_outl (immr_addr | POTAR_REG2, PCI_MSTR_IO_BUS >> 12);       /* PCI base */
+    pci_outl (immr_addr | POBAR_REG2, PCI_MSTR_IO_LOCAL >> 12);     /* Local base */
+    pci_outl (immr_addr | POCMR_REG2, POCMR2_MASK_ATTRIB);    /* Size & attribute */
+
+    /* 
+     * Set up slave window that allows PCI masters to access MPC826x local memory. 
+     * This window is set up using the first set of Inbound ATU registers
+     */
+    pci_outl (immr_addr | PITAR_REG0, PCI_SLV_MEM_LOCAL >> 12);     /* Local base */
+    pci_outl (immr_addr | PIBAR_REG0, PCI_SLV_MEM_BUS >> 12);       /* PCI base */
+    pci_outl (immr_addr | PICMR_REG0, PICMR0_MASK_ATTRIB);    /* Size & attribute */
+
+     /* See above for description - puts PCI request as highest priority */
+    immap->im_siu_conf.sc_ppc_alrh = 0x03124567;
+
+    /* Park the bus on the PCI */
+    immap->im_siu_conf.sc_ppc_acr = PPC_ACR_BUS_PARK_PCI;
+
+    /* Host mode - specify the bridge as a host-PCI bridge */
+
+    pci_hose_write_config_byte(hose, host_devno, PCI_CLASS_CODE,
+	                           PCI_CLASS_BRIDGE_CTLR);
+
+    /* Enable the host bridge to be a master on the PCI bus, and to act as a PCI memory target */
+    pci_hose_read_config_word(hose, host_devno, PCI_COMMAND, &tempShort);
+    pci_hose_write_config_word(hose, host_devno, PCI_COMMAND,
+		         tempShort | PCI_COMMAND_MASTER | PCI_COMMAND_MEMORY);
+
+    hose->first_busno = 0;
+    hose->last_busno = 0xff;
+
+    /* System memory space */
+    pci_set_region(hose->regions + 0,
+		       CFG_SDRAM_BASE,
+		       CFG_SDRAM_BASE,
+		       0x4000000,
+		       PCI_REGION_MEM | PCI_REGION_MEMORY);
+
+    /* PCI memory space */
+    pci_set_region(hose->regions + 1,
+		       PCI_MSTR_MEM_BUS,
+		       PCI_MSTR_MEM_LOCAL,
+		       PCI_MSTR_MEM_SIZE,
+		       PCI_REGION_MEM);
+
+    /* PCI I/O space */
+    pci_set_region(hose->regions + 2,
+		       PCI_MSTR_IO_BUS,
+		       PCI_MSTR_IO_LOCAL,
+		       PCI_MSTR_IO_SIZE,
+		       PCI_REGION_IO);
+
+    hose->region_count = 3;
+
+    pci_register_hose(hose);
+
+    hose->last_busno = pci_hose_scan(hose);
+}
+
+#endif	/* CONFIG_PCI */
diff --git a/drivers/pci_indirect.c b/drivers/pci_indirect.c
index 08be082..f7b4422 100644
--- a/drivers/pci_indirect.c
+++ b/drivers/pci_indirect.c
@@ -21,15 +21,28 @@
 #define cfg_read(val, addr, type, op)	*val = op((type)(addr))
 #define cfg_write(val, addr, type, op)	op((type *)(addr), (val))
 
+#ifdef CONFIG_PM826
 #define INDIRECT_PCI_OP(rw, size, type, op, mask)			 \
 static int								 \
 indirect_##rw##_config_##size(struct pci_controller *hose, 		 \
 			      pci_dev_t dev, int offset, type val)	 \
 {									 \
 	out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); 	 \
+	sync();								 \
 	cfg_##rw(val, hose->cfg_data + (offset & mask), type, op);	 \
 	return 0;    					 		 \
 }
+#else
+#define INDIRECT_PCI_OP(rw, size, type, op, mask)			 \
+static int								 \
+indirect_##rw##_config_##size(struct pci_controller *hose, 		 \
+			      pci_dev_t dev, int offset, type val)	 \
+{									 \
+	out_le32(hose->cfg_addr, dev | (offset & 0xfc) | 0x80000000); 	 \
+	cfg_##rw(val, hose->cfg_data + (offset & mask), type, op);	 \
+	return 0;    					 		 \
+}
+#endif
 
 #define INDIRECT_PCI_OP_ERRATA6(rw, size, type, op, mask)		 \
 static int								 \
diff --git a/include/asm-mips/u-boot.h b/include/asm-mips/u-boot.h
index ff189d9..0de0b4d 100644
--- a/include/asm-mips/u-boot.h
+++ b/include/asm-mips/u-boot.h
@@ -25,19 +25,17 @@
 #define _U_BOOT_H_	1
 
 typedef struct bd_info {
-    int			bi_baudrate;	/* serial console baudrate */
-    unsigned long	bi_ip_addr;	/* IP Address */
-    unsigned char	bi_enetaddr[6]; /* Ethernet adress */
-    struct environment_s	       *bi_env;
-    ulong	        bi_arch_number;	/* unique id for this board */
-    ulong	        bi_boot_params;	/* where this board expects params */
-    struct				/* RAM configuration */
-    {
-	ulong start;
-	ulong size;
-    } 			bi_dram[CONFIG_NR_DRAM_BANKS];
+	int		bi_baudrate;	/* serial console baudrate */
+	unsigned long	bi_ip_addr;	/* IP Address */
+	unsigned char	bi_enetaddr[6];	/* Ethernet adress */
+	unsigned long	bi_arch_number;	/* unique id for this board */
+	unsigned long	bi_boot_params;	/* where this board expects params */
+	unsigned long	bi_memstart;	/* start of DRAM memory */
+	unsigned long	bi_memsize;	/* size	 of DRAM memory in bytes */
+	unsigned long	bi_flashstart;	/* start of FLASH memory */
+	unsigned long	bi_flashsize;	/* size  of FLASH memory */
+	unsigned long	bi_flashoffset;	/* reserved area for startup monitor */
 } bd_t;
-
 #define bi_env_data bi_env->data
 #define bi_env_crc  bi_env->crc
 
diff --git a/include/asm-ppc/m8260_pci.h b/include/asm-ppc/m8260_pci.h
new file mode 100644
index 0000000..2675658
--- /dev/null
+++ b/include/asm-ppc/m8260_pci.h
@@ -0,0 +1,166 @@
+
+#ifndef _PPC_KERNEL_M8260_PCI_H
+#define _PPC_KERNEL_M8260_PCI_H
+
+#define M8265_PCIBR0	0x101ac
+#define M8265_PCIBR1	0x101b0
+#define M8265_PCIMSK0	0x101c4
+#define M8265_PCIMSK1	0x101c8
+
+/* Bit definitions for PCIBR registers */
+
+#define PCIBR_ENABLE        0x00000001
+
+/* Bit definitions for PCIMSK registers */
+
+#define PCIMSK_32KB         0xFFFF8000  /* Size of window, smallest */
+#define PCIMSK_64KB         0xFFFF0000
+#define PCIMSK_128KB        0xFFFE0000
+#define PCIMSK_256KB        0xFFFC0000
+#define PCIMSK_512KB        0xFFF80000
+#define PCIMSK_1MB          0xFFF00000
+#define PCIMSK_2MB          0xFFE00000
+#define PCIMSK_4MB          0xFFC00000
+#define PCIMSK_8MB          0xFF800000
+#define PCIMSK_16MB         0xFF000000
+#define PCIMSK_32MB         0xFE000000
+#define PCIMSK_64MB         0xFC000000
+#define PCIMSK_128MB        0xF8000000
+#define PCIMSK_256MB        0xF0000000
+#define PCIMSK_512MB        0xE0000000
+#define PCIMSK_1GB          0xC0000000  /* Size of window, largest */
+
+
+#define M826X_SCCR_PCI_MODE_EN 0x100
+
+
+/*
+ * Outbound ATU registers (3 sets). These registers control how 60x bus (local) 
+ * addresses are translated to PCI addresses when the MPC826x is a PCI bus 
+ * master (initiator).
+ */
+
+#define POTAR_REG0          0x10800     /* PCI Outbound Translation Addr registers */
+#define POTAR_REG1          0x10818
+#define POTAR_REG2          0x10830
+
+#define POBAR_REG0          0x10808     /* PCI Outbound Base Addr registers */
+#define POBAR_REG1          0x10820
+#define POBAR_REG2          0x10838
+
+#define POCMR_REG0          0x10810     /* PCI Outbound Comparison Mask registers */
+#define POCMR_REG1          0x10828
+#define POCMR_REG2          0x10840
+
+/* Bit definitions for POMCR registers */
+
+#define POCMR_MASK_4KB      0x000FFFFF
+#define POCMR_MASK_8KB      0x000FFFFE
+#define POCMR_MASK_16KB     0x000FFFFC
+#define POCMR_MASK_32KB     0x000FFFF8
+#define POCMR_MASK_64KB     0x000FFFF0
+#define POCMR_MASK_128KB    0x000FFFE0
+#define POCMR_MASK_256KB    0x000FFFC0
+#define POCMR_MASK_512KB    0x000FFF80
+#define POCMR_MASK_1MB      0x000FFF00
+#define POCMR_MASK_2MB      0x000FFE00
+#define POCMR_MASK_4MB      0x000FFC00
+#define POCMR_MASK_8MB      0x000FF800
+#define POCMR_MASK_16MB     0x000FF000
+#define POCMR_MASK_32MB     0x000FE000
+#define POCMR_MASK_64MB     0x000FC000
+#define POCMR_MASK_128MB    0x000F8000
+#define POCMR_MASK_256MB    0x000F0000
+#define POCMR_MASK_512MB    0x000E0000
+#define POCMR_MASK_1GB      0x000C0000
+
+#define POCMR_ENABLE        0x80000000
+#define POCMR_PCI_IO        0x40000000
+#define POCMR_PREFETCH_EN   0x20000000
+
+/* Soft PCI reset */
+
+#define PCI_GCR_REG         0x10880
+
+/* Bit definitions for PCI_GCR registers */
+
+#define PCIGCR_PCI_BUS_EN   0x1
+
+/*
+ * Inbound ATU registers (2 sets). These registers control how PCI addresses 
+ * are translated to 60x bus (local) addresses when the MPC826x is a PCI bus target.
+ */
+
+#define PITAR_REG1          0x108D0
+#define PIBAR_REG1          0x108D8
+#define PICMR_REG1          0x108E0
+#define PITAR_REG0          0x108E8
+#define PIBAR_REG0          0x108F0
+#define PICMR_REG0          0x108F8
+
+/* Bit definitions for PCI Inbound Comparison Mask registers */
+
+#define PICMR_MASK_4KB       0x000FFFFF
+#define PICMR_MASK_8KB       0x000FFFFE
+#define PICMR_MASK_16KB      0x000FFFFC
+#define PICMR_MASK_32KB      0x000FFFF8
+#define PICMR_MASK_64KB      0x000FFFF0
+#define PICMR_MASK_128KB     0x000FFFE0
+#define PICMR_MASK_256KB     0x000FFFC0
+#define PICMR_MASK_512KB     0x000FFF80
+#define PICMR_MASK_1MB       0x000FFF00
+#define PICMR_MASK_2MB       0x000FFE00
+#define PICMR_MASK_4MB       0x000FFC00
+#define PICMR_MASK_8MB       0x000FF800
+#define PICMR_MASK_16MB      0x000FF000
+#define PICMR_MASK_32MB      0x000FE000
+#define PICMR_MASK_64MB      0x000FC000
+#define PICMR_MASK_128MB     0x000F8000
+#define PICMR_MASK_256MB     0x000F0000
+#define PICMR_MASK_512MB     0x000E0000
+#define PICMR_MASK_1GB       0x000C0000
+
+#define PICMR_ENABLE         0x80000000
+#define PICMR_NO_SNOOP_EN    0x40000000
+#define PICMR_PREFETCH_EN    0x20000000
+
+/* PCI error Registers */
+
+#define	PCI_ERROR_STATUS_REG		0x10884
+#define	PCI_ERROR_MASK_REG		0x10888
+#define	PCI_ERROR_CONTROL_REG		0x1088C
+#define PCI_ERROR_ADRS_CAPTURE_REG      0x10890
+#define PCI_ERROR_DATA_CAPTURE_REG      0x10898
+#define PCI_ERROR_CTRL_CAPTURE_REG      0x108A0
+
+/* PCI error Register bit defines */
+
+#define	PCI_ERROR_PCI_ADDR_PAR			0x00000001
+#define	PCI_ERROR_PCI_DATA_PAR_WR		0x00000002
+#define	PCI_ERROR_PCI_DATA_PAR_RD		0x00000004
+#define	PCI_ERROR_PCI_NO_RSP			0x00000008
+#define	PCI_ERROR_PCI_TAR_ABT			0x00000010
+#define	PCI_ERROR_PCI_SERR			0x00000020
+#define	PCI_ERROR_PCI_PERR_RD			0x00000040
+#define	PCI_ERROR_PCI_PERR_WR			0x00000080
+#define	PCI_ERROR_I2O_OFQO			0x00000100
+#define	PCI_ERROR_I2O_IPQO			0x00000200
+#define	PCI_ERROR_IRA				0x00000400
+#define	PCI_ERROR_NMI				0x00000800
+#define	PCI_ERROR_I2O_DBMC			0x00001000
+
+/*
+ * Register pair used to generate configuration cycles on the PCI bus
+ * and access the MPC826x's own PCI configuration registers.
+ */
+
+#define PCI_CFG_ADDR_REG     0x10900
+#define PCI_CFG_DATA_REG     0x10904
+
+/* Bus parking decides where the bus control sits when idle */
+/* If modifying memory controllers for PCI park on the core */
+
+#define PPC_ACR_BUS_PARK_CORE 0x6
+#define PPC_ACR_BUS_PARK_PCI  0x3
+
+#endif /* _PPC_KERNEL_M8260_PCI_H */
diff --git a/include/configs/PM826.h b/include/configs/PM826.h
index d95596c..05f7130 100644
--- a/include/configs/PM826.h
+++ b/include/configs/PM826.h
@@ -303,6 +303,10 @@
 # define CFG_RAMBOOT
 #endif
 
+#define CONFIG_PCI
+#define CONFIG_PCI_PNP
+#define CONFIG_EEPRO100
+
 /*
  * Internal Definitions
  *