~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/powerpc/platforms/embedded6xx/c2k.c

Version: ~ [ linux-5.8-rc3 ] ~ [ linux-5.7.5 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.48 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.129 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.185 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.228 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.228 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  * Board setup routines for the GEFanuc C2K board
  3  *
  4  * Author: Remi Machet <rmachet@slac.stanford.edu>
  5  *
  6  * Originated from prpmc2800.c
  7  *
  8  * 2008 (c) Stanford University
  9  * 2007 (c) MontaVista, Software, Inc.
 10  *
 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.
 14  */
 15 
 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>
 22 #include <linux/of.h>
 23 
 24 #include <asm/machdep.h>
 25 #include <asm/prom.h>
 26 #include <asm/time.h>
 27 
 28 #include <mm/mmu_decl.h>
 29 
 30 #include <sysdev/mv64x60.h>
 31 
 32 #define MV64x60_MPP_CNTL_0      0x0000
 33 #define MV64x60_MPP_CNTL_2      0x0008
 34 
 35 #define MV64x60_GPP_IO_CNTL     0x0000
 36 #define MV64x60_GPP_LEVEL_CNTL  0x0010
 37 #define MV64x60_GPP_VALUE_SET   0x0018
 38 
 39 static void __iomem *mv64x60_mpp_reg_base;
 40 static void __iomem *mv64x60_gpp_reg_base;
 41 
 42 static void __init c2k_setup_arch(void)
 43 {
 44         struct device_node *np;
 45         phys_addr_t paddr;
 46         const unsigned int *reg;
 47 
 48         /*
 49          * ioremap mpp and gpp registers in case they are later
 50          * needed by c2k_reset_board().
 51          */
 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);
 55         of_node_put(np);
 56         mv64x60_mpp_reg_base = ioremap(paddr, reg[1]);
 57 
 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);
 61         of_node_put(np);
 62         mv64x60_gpp_reg_base = ioremap(paddr, reg[1]);
 63 
 64 #ifdef CONFIG_PCI
 65         mv64x60_pci_init();
 66 #endif
 67 }
 68 
 69 static void c2k_reset_board(void)
 70 {
 71         u32 temp;
 72 
 73         local_irq_disable();
 74 
 75         temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0);
 76         temp &= 0xFFFF0FFF;
 77         out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp);
 78 
 79         temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL);
 80         temp |= 0x00000004;
 81         out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp);
 82 
 83         temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL);
 84         temp |= 0x00000004;
 85         out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp);
 86 
 87         temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2);
 88         temp &= 0xFFFF0FFF;
 89         out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp);
 90 
 91         temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL);
 92         temp |= 0x00080000;
 93         out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp);
 94 
 95         temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL);
 96         temp |= 0x00080000;
 97         out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp);
 98 
 99         out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004);
100 }
101 
102 static void c2k_restart(char *cmd)
103 {
104         c2k_reset_board();
105         msleep(100);
106         panic("restart failed\n");
107 }
108 
109 #ifdef CONFIG_NOT_COHERENT_CACHE
110 #define COHERENCY_SETTING "off"
111 #else
112 #define COHERENCY_SETTING "on"
113 #endif
114 
115 void c2k_show_cpuinfo(struct seq_file *m)
116 {
117         seq_printf(m, "Vendor\t\t: GEFanuc\n");
118         seq_printf(m, "coherency\t: %s\n", COHERENCY_SETTING);
119 }
120 
121 /*
122  * Called very early, device-tree isn't unflattened
123  */
124 static int __init c2k_probe(void)
125 {
126         unsigned long root = of_get_flat_dt_root();
127 
128         if (!of_flat_dt_is_compatible(root, "GEFanuc,C2K"))
129                 return 0;
130 
131         printk(KERN_INFO "Detected a GEFanuc C2K board\n");
132 
133         _set_L2CR(0);
134         _set_L2CR(L2CR_L2E | L2CR_L2PE | L2CR_L2I);
135         return 1;
136 }
137 
138 define_machine(c2k) {
139         .name                   = "C2K",
140         .probe                  = c2k_probe,
141         .setup_arch             = c2k_setup_arch,
142         .init_early             = mv64x60_init_early,
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,
148 };
149 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp