Add PCI support for MPC8250 Boards (PM825 module)

3 files changed, 180 insertions, 12 deletions

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
  *