2 * A collection of structures, addresses, and values associated with
3 * the Motorola MBX boards. This was originally created for the
4 * MBX860, and probably needs revisions for other boards (like the 821).
5 * When this file gets out of control, we can split it up into more
8 * Copyright (c) 1997 Dan Malek (dmalek@jlc.net)
11 #ifndef __MACH_MBX_DEFS
12 #define __MACH_MBX_DEFS
15 /* A Board Information structure that is given to a program when
16 * EPPC-Bug starts it up.
18 typedef struct bd_info {
19 unsigned int bi_tag; /* Should be 0x42444944 "BDID" */
20 unsigned int bi_size; /* Size of this structure */
21 unsigned int bi_revision; /* revision of this structure */
22 unsigned int bi_bdate; /* EPPCbug date, i.e. 0x11061997 */
23 unsigned int bi_memstart; /* Memory start address */
24 unsigned int bi_memsize; /* Memory (end) size in bytes */
25 unsigned int bi_intfreq; /* Internal Freq, in Hz */
26 unsigned int bi_busfreq; /* Bus Freq, in Hz */
27 unsigned int bi_clun; /* Boot device controller */
28 unsigned int bi_dlun; /* Boot device logical dev */
30 /* These fields are not part of the board information structure
31 * provided by the boot rom. They are filled in by embed_config.c
32 * so we have the information consistent with other platforms.
34 unsigned char bi_enetaddr[6];
35 unsigned int bi_baudrate;
38 /* Memory map for the MBX as configured by EPPC-Bug. We could reprogram
39 * The SIU and PCI bridge, and try to use larger MMU pages, but the
40 * performance gain is not measureable and it certainly complicates the
43 * In a effort to minimize memory usage for embedded applications, any
44 * PCI driver or ISA driver must request or map the region required by
45 * the device. For convenience (and since we can map up to 4 Mbytes with
46 * a single page table page), the MMU initialization will map the
47 * NVRAM, Status/Control registers, CPM Dual Port RAM, and the PCI
48 * Bridge CSRs 1:1 into the kernel address space.
50 #define PCI_ISA_IO_ADDR ((unsigned)0x80000000)
51 #define PCI_ISA_IO_SIZE ((uint)(512 * 1024 * 1024))
52 #define PCI_IDE_ADDR ((unsigned)0x81000000)
53 #define PCI_ISA_MEM_ADDR ((unsigned)0xc0000000)
54 #define PCI_ISA_MEM_SIZE ((uint)(512 * 1024 * 1024))
55 #define PCMCIA_MEM_ADDR ((uint)0xe0000000)
56 #define PCMCIA_MEM_SIZE ((uint)(64 * 1024 * 1024))
57 #define PCMCIA_DMA_ADDR ((uint)0xe4000000)
58 #define PCMCIA_DMA_SIZE ((uint)(64 * 1024 * 1024))
59 #define PCMCIA_ATTRB_ADDR ((uint)0xe8000000)
60 #define PCMCIA_ATTRB_SIZE ((uint)(64 * 1024 * 1024))
61 #define PCMCIA_IO_ADDR ((uint)0xec000000)
62 #define PCMCIA_IO_SIZE ((uint)(64 * 1024 * 1024))
63 #define NVRAM_ADDR ((uint)0xfa000000)
64 #define NVRAM_SIZE ((uint)(1 * 1024 * 1024))
65 #define MBX_CSR_ADDR ((uint)0xfa100000)
66 #define MBX_CSR_SIZE ((uint)(1 * 1024 * 1024))
67 #define IMAP_ADDR ((uint)0xfa200000)
68 #define IMAP_SIZE ((uint)(64 * 1024))
69 #define PCI_CSR_ADDR ((uint)0xfa210000)
70 #define PCI_CSR_SIZE ((uint)(64 * 1024))
72 /* Map additional physical space into well known virtual addresses. Due
73 * to virtual address mapping, these physical addresses are not accessible
74 * in a 1:1 virtual to physical mapping.
76 #define ISA_IO_VIRT_ADDR ((uint)0xfa220000)
77 #define ISA_IO_VIRT_SIZE ((uint)64 * 1024)
79 /* Interrupt assignments.
80 * These are defined (and fixed) by the MBX hardware implementation.
82 #define POWER_FAIL_INT SIU_IRQ0 /* Power fail */
83 #define TEMP_HILO_INT SIU_IRQ1 /* Temperature sensor */
84 #define QSPAN_INT SIU_IRQ2 /* PCI Bridge (DMA CTLR?) */
85 #define ISA_BRIDGE_INT SIU_IRQ3 /* All those PC things */
86 #define COMM_L_INT SIU_IRQ6 /* MBX Comm expansion connector pin */
87 #define STOP_ABRT_INT SIU_IRQ7 /* Stop/Abort header pin */
89 /* CPM Ethernet through SCCx.
91 * Bits in parallel I/O port registers that have to be set/cleared
92 * to configure the pins for SCC1 use. The TCLK and RCLK seem unique
93 * to the MBX860 board. Any two of the four available clocks could be
94 * used, and the MPC860 cookbook manual has an example using different
97 #define PA_ENET_RXD ((ushort)0x0001)
98 #define PA_ENET_TXD ((ushort)0x0002)
99 #define PA_ENET_TCLK ((ushort)0x0200)
100 #define PA_ENET_RCLK ((ushort)0x0800)
101 #define PC_ENET_TENA ((ushort)0x0001)
102 #define PC_ENET_CLSN ((ushort)0x0010)
103 #define PC_ENET_RENA ((ushort)0x0020)
105 /* Control bits in the SICR to route TCLK (CLK2) and RCLK (CLK4) to
106 * SCC1. Also, make sure GR1 (bit 24) and SC1 (bit 25) are zero.
108 #define SICR_ENET_MASK ((uint)0x000000ff)
109 #define SICR_ENET_CLKRT ((uint)0x0000003d)
111 /* The MBX uses the 8259.
113 #define NR_8259_INTS 16
115 #endif /* !__ASSEMBLY__ */
116 #endif /* __MACH_MBX_DEFS */
117 #endif /* __KERNEL__ */