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[karo-tx-uboot.git] / board / freescale / mpc8349itx / pci.c
1 /*
2  * Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
3  *
4  * SPDX-License-Identifier:     GPL-2.0+
5  */
6
7 #include <common.h>
8
9 #include <asm/mmu.h>
10 #include <asm/io.h>
11 #include <mpc83xx.h>
12 #include <pci.h>
13 #include <i2c.h>
14 #include <asm/fsl_i2c.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17
18 static struct pci_region pci1_regions[] = {
19         {
20                 bus_start: CONFIG_SYS_PCI1_MEM_BASE,
21                 phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
22                 size: CONFIG_SYS_PCI1_MEM_SIZE,
23                 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
24         },
25         {
26                 bus_start: CONFIG_SYS_PCI1_IO_BASE,
27                 phys_start: CONFIG_SYS_PCI1_IO_PHYS,
28                 size: CONFIG_SYS_PCI1_IO_SIZE,
29                 flags: PCI_REGION_IO
30         },
31         {
32                 bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
33                 phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
34                 size: CONFIG_SYS_PCI1_MMIO_SIZE,
35                 flags: PCI_REGION_MEM
36         },
37 };
38
39 #ifdef CONFIG_MPC83XX_PCI2
40 static struct pci_region pci2_regions[] = {
41         {
42                 bus_start: CONFIG_SYS_PCI2_MEM_BASE,
43                 phys_start: CONFIG_SYS_PCI2_MEM_PHYS,
44                 size: CONFIG_SYS_PCI2_MEM_SIZE,
45                 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
46         },
47         {
48                 bus_start: CONFIG_SYS_PCI2_IO_BASE,
49                 phys_start: CONFIG_SYS_PCI2_IO_PHYS,
50                 size: CONFIG_SYS_PCI2_IO_SIZE,
51                 flags: PCI_REGION_IO
52         },
53         {
54                 bus_start: CONFIG_SYS_PCI2_MMIO_BASE,
55                 phys_start: CONFIG_SYS_PCI2_MMIO_PHYS,
56                 size: CONFIG_SYS_PCI2_MMIO_SIZE,
57                 flags: PCI_REGION_MEM
58         },
59 };
60 #endif
61
62 void pci_init_board(void)
63 {
64         volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
65         volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
66         volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
67 #ifndef CONFIG_MPC83XX_PCI2
68         struct pci_region *reg[] = { pci1_regions };
69 #else
70         struct pci_region *reg[] = { pci1_regions, pci2_regions };
71 #endif
72         u8 reg8;
73
74 #if defined(CONFIG_SYS_I2C)
75         i2c_set_bus_num(1);
76         /* Read the PCI_M66EN jumper setting */
77         if ((i2c_read(CONFIG_SYS_I2C_8574_ADDR2, 0, 0, &reg8, sizeof(reg8)) == 0) ||
78             (i2c_read(CONFIG_SYS_I2C_8574A_ADDR2, 0, 0, &reg8, sizeof(reg8)) == 0)) {
79                 if (reg8 & I2C_8574_PCI66)
80                         clk->occr = 0xff000000; /* 66 MHz PCI */
81                 else
82                         clk->occr = 0xff600001; /* 33 MHz PCI */
83         } else {
84                 clk->occr = 0xff600001; /* 33 MHz PCI */
85         }
86 #else
87         clk->occr = 0xff000000; /* 66 MHz PCI */
88 #endif
89         udelay(2000);
90
91         /* Configure PCI Local Access Windows */
92         pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
93         pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
94
95         pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
96         pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_32M;
97
98         udelay(2000);
99
100 #ifndef CONFIG_MPC83XX_PCI2
101         mpc83xx_pci_init(1, reg);
102 #else
103         mpc83xx_pci_init(2, reg);
104 #endif
105 }