2 * Copyright (C) 2006-2009 Freescale Semiconductor, Inc.
4 * SPDX-License-Identifier: GPL-2.0+
13 #include <asm/fsl_i2c.h>
15 DECLARE_GLOBAL_DATA_PTR;
17 static struct pci_region pci1_regions[] = {
19 bus_start: CONFIG_SYS_PCI1_MEM_BASE,
20 phys_start: CONFIG_SYS_PCI1_MEM_PHYS,
21 size: CONFIG_SYS_PCI1_MEM_SIZE,
22 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
25 bus_start: CONFIG_SYS_PCI1_IO_BASE,
26 phys_start: CONFIG_SYS_PCI1_IO_PHYS,
27 size: CONFIG_SYS_PCI1_IO_SIZE,
31 bus_start: CONFIG_SYS_PCI1_MMIO_BASE,
32 phys_start: CONFIG_SYS_PCI1_MMIO_PHYS,
33 size: CONFIG_SYS_PCI1_MMIO_SIZE,
38 #ifdef CONFIG_MPC83XX_PCI2
39 static struct pci_region pci2_regions[] = {
41 bus_start: CONFIG_SYS_PCI2_MEM_BASE,
42 phys_start: CONFIG_SYS_PCI2_MEM_PHYS,
43 size: CONFIG_SYS_PCI2_MEM_SIZE,
44 flags: PCI_REGION_MEM | PCI_REGION_PREFETCH
47 bus_start: CONFIG_SYS_PCI2_IO_BASE,
48 phys_start: CONFIG_SYS_PCI2_IO_PHYS,
49 size: CONFIG_SYS_PCI2_IO_SIZE,
53 bus_start: CONFIG_SYS_PCI2_MMIO_BASE,
54 phys_start: CONFIG_SYS_PCI2_MMIO_PHYS,
55 size: CONFIG_SYS_PCI2_MMIO_SIZE,
61 #ifndef CONFIG_PCISLAVE
64 u8 val8, orig_i2c_bus;
66 * Assign PIB PMC slot to desired PCI bus
68 /* Switch temporarily to I2C bus #2 */
69 orig_i2c_bus = i2c_get_bus_num();
73 i2c_write(0x23, 0x6, 1, &val8, 1);
74 i2c_write(0x23, 0x7, 1, &val8, 1);
76 i2c_write(0x23, 0x2, 1, &val8, 1);
77 i2c_write(0x23, 0x3, 1, &val8, 1);
80 i2c_write(0x26, 0x6, 1, &val8, 1);
82 i2c_write(0x26, 0x7, 1, &val8, 1);
83 #if defined(PCI_64BIT)
84 val8 = 0xf4; /* PMC2:PCI1/64-bit */
85 #elif defined(PCI_ALL_PCI1)
86 val8 = 0xf3; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI1 */
87 #elif defined(PCI_ONE_PCI1)
88 val8 = 0xf9; /* PMC1:PCI1 PMC2:PCI2 PMC3:PCI2 */
90 val8 = 0xf5; /* PMC1:PCI1 PMC2:PCI1 PMC3:PCI2 */
92 i2c_write(0x26, 0x2, 1, &val8, 1);
94 i2c_write(0x26, 0x3, 1, &val8, 1);
96 i2c_write(0x27, 0x6, 1, &val8, 1);
97 i2c_write(0x27, 0x7, 1, &val8, 1);
99 i2c_write(0x27, 0x2, 1, &val8, 1);
101 i2c_write(0x27, 0x3, 1, &val8, 1);
104 #if defined(PCI_64BIT)
105 printf("PCI1: 64-bit on PMC2\n");
106 #elif defined(PCI_ALL_PCI1)
107 printf("PCI1: 32-bit on PMC1, PMC2, PMC3\n");
108 #elif defined(PCI_ONE_PCI1)
109 printf("PCI1: 32-bit on PMC1\n");
110 printf("PCI2: 32-bit on PMC2, PMC3\n");
112 printf("PCI1: 32-bit on PMC1, PMC2\n");
113 printf("PCI2: 32-bit on PMC3\n");
115 /* Reset to original I2C bus */
116 i2c_set_bus_num(orig_i2c_bus);
119 void pci_init_board(void)
121 volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
122 volatile clk83xx_t *clk = (volatile clk83xx_t *)&immr->clk;
123 volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
124 #ifndef CONFIG_MPC83XX_PCI2
125 struct pci_region *reg[] = { pci1_regions };
127 struct pci_region *reg[] = { pci1_regions, pci2_regions };
130 /* initialize the PCA9555PW IO expander on the PIB board */
133 /* Enable all 8 PCI_CLK_OUTPUTS */
134 clk->occr = 0xff000000;
137 /* Configure PCI Local Access Windows */
138 pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
139 pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
141 pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
142 pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M;
146 #ifndef CONFIG_MPC83XX_PCI2
147 mpc83xx_pci_init(1, reg);
149 mpc83xx_pci_init(2, reg);
154 void pci_init_board(void)
156 volatile immap_t *immr = (volatile immap_t *)CONFIG_SYS_IMMR;
157 volatile law83xx_t *pci_law = immr->sysconf.pcilaw;
158 volatile pcictrl83xx_t *pci_ctrl = &immr->pci_ctrl[0];
159 struct pci_region *reg[] = { pci1_regions };
161 /* Configure PCI Local Access Windows */
162 pci_law[0].bar = CONFIG_SYS_PCI1_MEM_PHYS & LAWBAR_BAR;
163 pci_law[0].ar = LAWAR_EN | LAWAR_SIZE_1G;
165 pci_law[1].bar = CONFIG_SYS_PCI1_IO_PHYS & LAWBAR_BAR;
166 pci_law[1].ar = LAWAR_EN | LAWAR_SIZE_4M;
168 mpc83xx_pci_init(1, reg);
170 /* Configure PCI Inbound Translation Windows (3 1MB windows) */
171 pci_ctrl->pitar0 = 0x0;
172 pci_ctrl->pibar0 = 0x0;
173 pci_ctrl->piwar0 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
174 PIWAR_WTT_SNOOP | PIWAR_IWS_1M;
176 pci_ctrl->pitar1 = 0x0;
177 pci_ctrl->pibar1 = 0x0;
178 pci_ctrl->piebar1 = 0x0;
179 pci_ctrl->piwar1 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
180 PIWAR_WTT_SNOOP | PIWAR_IWS_1M;
182 pci_ctrl->pitar2 = 0x0;
183 pci_ctrl->pibar2 = 0x0;
184 pci_ctrl->piebar2 = 0x0;
185 pci_ctrl->piwar2 = PIWAR_EN | PIWAR_PF | PIWAR_RTT_SNOOP |
186 PIWAR_WTT_SNOOP | PIWAR_IWS_1M;
188 /* Unlock the configuration bit */
189 mpc83xx_pcislave_unlock(0);
190 printf("PCI: Agent mode enabled\n");
192 #endif /* CONFIG_PCISLAVE */