2 * MPC85xx setup and early boot code plus other random bits.
4 * Maintained by Kumar Gala (see MAINTAINERS for contact information)
6 * Copyright 2005 Freescale Semiconductor Inc.
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
14 #include <linux/stddef.h>
15 #include <linux/kernel.h>
16 #include <linux/pci.h>
17 #include <linux/kdev_t.h>
18 #include <linux/delay.h>
19 #include <linux/seq_file.h>
20 #include <linux/of_platform.h>
22 #include <asm/system.h>
24 #include <asm/machdep.h>
25 #include <asm/pci-bridge.h>
27 #include <mm/mmu_decl.h>
30 #include <sysdev/fsl_soc.h>
31 #include <sysdev/fsl_pci.h>
35 #include <sysdev/cpm2_pic.h>
41 static int mpc85xx_exclude_device(struct pci_controller
*hose
,
42 u_char bus
, u_char devfn
)
44 if (bus
== 0 && PCI_SLOT(devfn
) == 0)
45 return PCIBIOS_DEVICE_NOT_FOUND
;
47 return PCIBIOS_SUCCESSFUL
;
49 #endif /* CONFIG_PCI */
51 static void __init
mpc85xx_ads_pic_init(void)
55 struct device_node
*np
= NULL
;
57 np
= of_find_node_by_type(np
, "open-pic");
59 printk(KERN_ERR
"Could not find open-pic node\n");
63 if (of_address_to_resource(np
, 0, &r
)) {
64 printk(KERN_ERR
"Could not map mpic register space\n");
69 mpic
= mpic_alloc(np
, r
.start
,
70 MPIC_PRIMARY
| MPIC_WANTS_RESET
| MPIC_BIG_ENDIAN
,
77 mpc85xx_cpm2_pic_init();
81 * Setup the architecture
88 static const struct cpm_pin mpc8560_ads_pins
[] = {
90 {3, 29, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
91 {3, 30, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
92 {3, 31, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
95 {2, 12, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
96 {2, 13, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
97 {3, 26, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
98 {3, 27, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
99 {3, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
102 {1, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
103 {1, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
104 {1, 20, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
105 {1, 21, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
106 {1, 22, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
107 {1, 23, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
108 {1, 24, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
109 {1, 25, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
110 {1, 26, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
111 {1, 27, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
112 {1, 28, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
113 {1, 29, CPM_PIN_OUTPUT
| CPM_PIN_SECONDARY
},
114 {1, 30, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
115 {1, 31, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
116 {2, 18, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* CLK14 */
117 {2, 19, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* CLK13 */
120 {1, 4, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
121 {1, 5, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
122 {1, 6, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
123 {1, 8, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
124 {1, 9, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
125 {1, 10, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
126 {1, 11, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
127 {1, 12, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
128 {1, 13, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
129 {1, 14, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
130 {1, 15, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
131 {1, 16, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
132 {1, 17, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
},
133 {2, 16, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* CLK16 */
134 {2, 17, CPM_PIN_INPUT
| CPM_PIN_PRIMARY
}, /* CLK15 */
135 {2, 27, CPM_PIN_OUTPUT
| CPM_PIN_PRIMARY
},
138 static void __init
init_ioports(void)
142 for (i
= 0; i
< ARRAY_SIZE(mpc8560_ads_pins
); i
++) {
143 const struct cpm_pin
*pin
= &mpc8560_ads_pins
[i
];
144 cpm2_set_pin(pin
->port
, pin
->pin
, pin
->flags
);
147 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_BRG1
, CPM_CLK_RX
);
148 cpm2_clk_setup(CPM_CLK_SCC1
, CPM_BRG1
, CPM_CLK_TX
);
149 cpm2_clk_setup(CPM_CLK_SCC2
, CPM_BRG2
, CPM_CLK_RX
);
150 cpm2_clk_setup(CPM_CLK_SCC2
, CPM_BRG2
, CPM_CLK_TX
);
151 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK13
, CPM_CLK_RX
);
152 cpm2_clk_setup(CPM_CLK_FCC2
, CPM_CLK14
, CPM_CLK_TX
);
153 cpm2_clk_setup(CPM_CLK_FCC3
, CPM_CLK15
, CPM_CLK_RX
);
154 cpm2_clk_setup(CPM_CLK_FCC3
, CPM_CLK16
, CPM_CLK_TX
);
158 static void __init
mpc85xx_ads_setup_arch(void)
161 struct device_node
*np
;
165 ppc_md
.progress("mpc85xx_ads_setup_arch()", 0);
173 for_each_compatible_node(np
, "pci", "fsl,mpc8540-pci")
174 fsl_add_bridge(np
, 1);
176 ppc_md
.pci_exclude_device
= mpc85xx_exclude_device
;
180 static void mpc85xx_ads_show_cpuinfo(struct seq_file
*m
)
182 uint pvid
, svid
, phid1
;
184 pvid
= mfspr(SPRN_PVR
);
185 svid
= mfspr(SPRN_SVR
);
187 seq_printf(m
, "Vendor\t\t: Freescale Semiconductor\n");
188 seq_printf(m
, "PVR\t\t: 0x%x\n", pvid
);
189 seq_printf(m
, "SVR\t\t: 0x%x\n", svid
);
191 /* Display cpu Pll setting */
192 phid1
= mfspr(SPRN_HID1
);
193 seq_printf(m
, "PLL setting\t: 0x%x\n", ((phid1
>> 24) & 0x3f));
196 static struct of_device_id __initdata of_bus_ids
[] = {
200 { .name
= "localbus", },
201 { .compatible
= "simple-bus", },
202 { .compatible
= "gianfar", },
206 static int __init
declare_of_platform_devices(void)
208 of_platform_bus_probe(NULL
, of_bus_ids
, NULL
);
212 machine_device_initcall(mpc85xx_ads
, declare_of_platform_devices
);
215 * Called very early, device-tree isn't unflattened
217 static int __init
mpc85xx_ads_probe(void)
219 unsigned long root
= of_get_flat_dt_root();
221 return of_flat_dt_is_compatible(root
, "MPC85xxADS");
224 define_machine(mpc85xx_ads
) {
225 .name
= "MPC85xx ADS",
226 .probe
= mpc85xx_ads_probe
,
227 .setup_arch
= mpc85xx_ads_setup_arch
,
228 .init_IRQ
= mpc85xx_ads_pic_init
,
229 .show_cpuinfo
= mpc85xx_ads_show_cpuinfo
,
230 .get_irq
= mpic_get_irq
,
231 .restart
= fsl_rstcr_restart
,
232 .calibrate_decr
= generic_calibrate_decr
,
233 .progress
= udbg_progress
,