2 * Board setup routines for the GEFanuc C2K board
4 * Author: Remi Machet <rmachet@slac.stanford.edu>
6 * Originated from prpmc2800.c
8 * 2008 (c) Stanford University
9 * 2007 (c) MontaVista, Software, Inc.
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License version 2 as published
13 * by the Free Software Foundation.
16 #include <linux/stddef.h>
17 #include <linux/kernel.h>
18 #include <linux/delay.h>
19 #include <linux/interrupt.h>
20 #include <linux/seq_file.h>
21 #include <linux/time.h>
24 #include <asm/machdep.h>
28 #include <mm/mmu_decl.h>
30 #include <sysdev/mv64x60.h>
32 #define MV64x60_MPP_CNTL_0 0x0000
33 #define MV64x60_MPP_CNTL_2 0x0008
35 #define MV64x60_GPP_IO_CNTL 0x0000
36 #define MV64x60_GPP_LEVEL_CNTL 0x0010
37 #define MV64x60_GPP_VALUE_SET 0x0018
39 static void __iomem
*mv64x60_mpp_reg_base
;
40 static void __iomem
*mv64x60_gpp_reg_base
;
42 static void __init
c2k_setup_arch(void)
44 struct device_node
*np
;
46 const unsigned int *reg
;
49 * ioremap mpp and gpp registers in case they are later
50 * needed by c2k_reset_board().
52 np
= of_find_compatible_node(NULL
, NULL
, "marvell,mv64360-mpp");
53 reg
= of_get_property(np
, "reg", NULL
);
54 paddr
= of_translate_address(np
, reg
);
56 mv64x60_mpp_reg_base
= ioremap(paddr
, reg
[1]);
58 np
= of_find_compatible_node(NULL
, NULL
, "marvell,mv64360-gpp");
59 reg
= of_get_property(np
, "reg", NULL
);
60 paddr
= of_translate_address(np
, reg
);
62 mv64x60_gpp_reg_base
= ioremap(paddr
, reg
[1]);
69 static void c2k_reset_board(void)
75 temp
= in_le32(mv64x60_mpp_reg_base
+ MV64x60_MPP_CNTL_0
);
77 out_le32(mv64x60_mpp_reg_base
+ MV64x60_MPP_CNTL_0
, temp
);
79 temp
= in_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_LEVEL_CNTL
);
81 out_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_LEVEL_CNTL
, temp
);
83 temp
= in_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_IO_CNTL
);
85 out_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_IO_CNTL
, temp
);
87 temp
= in_le32(mv64x60_mpp_reg_base
+ MV64x60_MPP_CNTL_2
);
89 out_le32(mv64x60_mpp_reg_base
+ MV64x60_MPP_CNTL_2
, temp
);
91 temp
= in_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_LEVEL_CNTL
);
93 out_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_LEVEL_CNTL
, temp
);
95 temp
= in_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_IO_CNTL
);
97 out_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_IO_CNTL
, temp
);
99 out_le32(mv64x60_gpp_reg_base
+ MV64x60_GPP_VALUE_SET
, 0x00080004);
102 static void __noreturn
c2k_restart(char *cmd
)
106 panic("restart failed\n");
109 #ifdef CONFIG_NOT_COHERENT_CACHE
110 #define COHERENCY_SETTING "off"
112 #define COHERENCY_SETTING "on"
115 void c2k_show_cpuinfo(struct seq_file
*m
)
117 seq_printf(m
, "Vendor\t\t: GEFanuc\n");
118 seq_printf(m
, "coherency\t: %s\n", COHERENCY_SETTING
);
122 * Called very early, device-tree isn't unflattened
124 static int __init
c2k_probe(void)
126 if (!of_machine_is_compatible("GEFanuc,C2K"))
129 printk(KERN_INFO
"Detected a GEFanuc C2K board\n");
132 _set_L2CR(L2CR_L2E
| L2CR_L2PE
| L2CR_L2I
);
134 mv64x60_init_early();
139 define_machine(c2k
) {
142 .setup_arch
= c2k_setup_arch
,
143 .show_cpuinfo
= c2k_show_cpuinfo
,
144 .init_IRQ
= mv64x60_init_irq
,
145 .get_irq
= mv64x60_get_irq
,
146 .restart
= c2k_restart
,
147 .calibrate_decr
= generic_calibrate_decr
,