2 * Copyright 2008 Extreme Engineering Solutions, Inc.
3 * Copyright 2007-2008 Freescale Semiconductor, Inc.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
26 #include <asm/fsl_pci.h>
28 #include <linux/compiler.h>
30 #include <fdt_support.h>
34 static struct pci_controller pci1_hose;
37 static struct pci_controller pcie1_hose;
40 static struct pci_controller pcie2_hose;
43 static struct pci_controller pcie3_hose;
47 * 85xx and 86xx share naming conventions, but different layout.
48 * Correlate names to CPU-specific values to share common
51 #if defined(CONFIG_MPC85xx)
52 #define MPC8xxx_DEVDISR_PCIE1 MPC85xx_DEVDISR_PCIE
53 #define MPC8xxx_DEVDISR_PCIE2 MPC85xx_DEVDISR_PCIE2
54 #define MPC8xxx_DEVDISR_PCIE3 MPC85xx_DEVDISR_PCIE3
55 #define MPC8xxx_PORDEVSR_IO_SEL MPC85xx_PORDEVSR_IO_SEL
56 #define MPC8xxx_PORDEVSR_IO_SEL_SHIFT MPC85xx_PORDEVSR_IO_SEL_SHIFT
57 #define MPC8xxx_PORBMSR_HA MPC85xx_PORBMSR_HA
58 #define MPC8xxx_PORBMSR_HA_SHIFT MPC85xx_PORBMSR_HA_SHIFT
59 #elif defined(CONFIG_MPC86xx)
60 #define MPC8xxx_DEVDISR_PCIE1 MPC86xx_DEVDISR_PCIEX1
61 #define MPC8xxx_DEVDISR_PCIE2 MPC86xx_DEVDISR_PCIEX2
62 #define MPC8xxx_DEVDISR_PCIE3 0 /* 8641 doesn't have PCIe3 */
63 #define MPC8xxx_PORDEVSR_IO_SEL MPC8641_PORDEVSR_IO_SEL
64 #define MPC8xxx_PORDEVSR_IO_SEL_SHIFT MPC8641_PORDEVSR_IO_SEL_SHIFT
65 #define MPC8xxx_PORBMSR_HA MPC8641_PORBMSR_HA
66 #define MPC8xxx_PORBMSR_HA_SHIFT MPC8641_PORBMSR_HA_SHIFT
69 void pci_init_board(void)
71 struct fsl_pci_info pci_info[3];
72 int first_free_busno = 0;
75 __maybe_unused int pcie_configured;
77 #if defined(CONFIG_MPC85xx)
78 volatile ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
79 #elif defined(CONFIG_MPC86xx)
80 immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
81 volatile ccsr_gur_t *gur = &immap->im_gur;
83 u32 devdisr = in_be32(&gur->devdisr);
84 u32 pordevsr = in_be32(&gur->pordevsr);
85 __maybe_unused uint io_sel = (pordevsr & MPC8xxx_PORDEVSR_IO_SEL) >>
86 MPC8xxx_PORDEVSR_IO_SEL_SHIFT;
89 uint pci_spd_norm = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_SPD;
90 uint pci_32 = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_PCI32;
91 uint pci_arb = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1_ARB;
92 uint pcix = in_be32(&gur->pordevsr) & MPC85xx_PORDEVSR_PCI1;
93 uint freq = CONFIG_SYS_CLK_FREQ / 1000 / 1000;
95 if (!(devdisr & MPC85xx_DEVDISR_PCI1)) {
96 SET_STD_PCI_INFO(pci_info[num], 1);
97 pcie_ep = fsl_setup_hose(&pci1_hose, pci_info[num].regs);
98 printf("\n PCI1: %d bit %s, %s %d MHz, %s, %s\n",
100 pcix ? "PCIX" : "PCI",
101 pci_spd_norm ? ">=" : "<=",
102 pcix ? freq * 2 : freq,
103 pcie_ep ? "agent" : "host",
104 pci_arb ? "arbiter" : "external-arbiter");
106 first_free_busno = fsl_pci_init_port(&pci_info[num++],
107 &pci1_hose, first_free_busno);
109 printf(" PCI1: disabled\n");
111 #elif defined CONFIG_MPC8548
112 /* PCI1 not present on MPC8572 */
113 setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_PCI1);
117 pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_1, io_sel);
119 if (pcie_configured && !(devdisr & MPC8xxx_DEVDISR_PCIE1)) {
120 SET_STD_PCIE_INFO(pci_info[num], 1);
121 pcie_ep = fsl_setup_hose(&pcie1_hose, pci_info[num].regs);
122 printf(" PCIE1 connected as %s\n",
123 pcie_ep ? "Endpoint" : "Root Complex");
124 first_free_busno = fsl_pci_init_port(&pci_info[num++],
125 &pcie1_hose, first_free_busno);
127 printf(" PCIE1: disabled\n");
130 setbits_be32(&gur->devdisr, MPC8xxx_DEVDISR_PCIE1);
131 #endif /* CONFIG_PCIE1 */
134 pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_2, io_sel);
136 if (pcie_configured && !(devdisr & MPC8xxx_DEVDISR_PCIE2)) {
137 SET_STD_PCIE_INFO(pci_info[num], 2);
138 pcie_ep = fsl_setup_hose(&pcie2_hose, pci_info[num].regs);
139 printf(" PCIE2 connected as %s\n",
140 pcie_ep ? "Endpoint" : "Root Complex");
141 first_free_busno = fsl_pci_init_port(&pci_info[num++],
142 &pcie2_hose, first_free_busno);
144 printf(" PCIE2: disabled\n");
147 setbits_be32(&gur->devdisr, MPC8xxx_DEVDISR_PCIE2);
148 #endif /* CONFIG_PCIE2 */
151 pcie_configured = is_fsl_pci_cfg(LAW_TRGT_IF_PCIE_3, io_sel);
153 if (pcie_configured && !(devdisr & MPC8xxx_DEVDISR_PCIE3)) {
154 SET_STD_PCIE_INFO(pci_info[num], 3);
155 pcie_ep = fsl_setup_hose(&pcie3_hose, pci_info[num].regs);
156 printf(" PCIE3 connected as %s\n",
157 pcie_ep ? "Endpoint" : "Root Complex");
158 first_free_busno = fsl_pci_init_port(&pci_info[num++],
159 &pcie3_hose, first_free_busno);
161 printf(" PCIE3: disabled\n");
164 setbits_be32(&gur->devdisr, MPC8xxx_DEVDISR_PCIE3);
165 #endif /* CONFIG_PCIE3 */
168 #if defined(CONFIG_OF_BOARD_SETUP)
169 void ft_board_pci_setup(void *blob, bd_t *bd)
173 #endif /* CONFIG_OF_BOARD_SETUP */