projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 46388c0d RM |
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> | |
| 46388c0d RM |
23 | |
| 24 | #include <asm/machdep.h> | |
| 25 | #include <asm/prom.h> | |
| 26 | #include <asm/system.h> | |
| 27 | #include <asm/time.h> | |
| 28 | ||
| 29 | #include <mm/mmu_decl.h> | |
| 30 | ||
| 31 | #include <sysdev/mv64x60.h> | |
| 32 | ||
| 33 | #define MV64x60_MPP_CNTL_0 0x0000 | |
| 34 | #define MV64x60_MPP_CNTL_2 0x0008 | |
| 35 | ||
| 36 | #define MV64x60_GPP_IO_CNTL 0x0000 | |
| 37 | #define MV64x60_GPP_LEVEL_CNTL 0x0010 | |
| 38 | #define MV64x60_GPP_VALUE_SET 0x0018 | |
| 39 | ||
| 40 | static void __iomem *mv64x60_mpp_reg_base; | |
| 41 | static void __iomem *mv64x60_gpp_reg_base; | |
| 42 | ||
| 43 | static void __init c2k_setup_arch(void) | |
| 44 | { | |
| 45 | struct device_node *np; | |
| 46 | phys_addr_t paddr; | |
| 47 | const unsigned int *reg; | |
| 48 | ||
| 49 | /* | |
| 50 | * ioremap mpp and gpp registers in case they are later | |
| 51 | * needed by c2k_reset_board(). | |
| 52 | */ | |
| 53 | np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-mpp"); | |
| 54 | reg = of_get_property(np, "reg", NULL); | |
| 55 | paddr = of_translate_address(np, reg); | |
| 56 | of_node_put(np); | |
| 57 | mv64x60_mpp_reg_base = ioremap(paddr, reg[1]); | |
| 58 | ||
| 59 | np = of_find_compatible_node(NULL, NULL, "marvell,mv64360-gpp"); | |
| 60 | reg = of_get_property(np, "reg", NULL); | |
| 61 | paddr = of_translate_address(np, reg); | |
| 62 | of_node_put(np); | |
| 63 | mv64x60_gpp_reg_base = ioremap(paddr, reg[1]); | |
| 64 | ||
| 65 | #ifdef CONFIG_PCI | |
| 66 | mv64x60_pci_init(); | |
| 67 | #endif | |
| 68 | } | |
| 69 | ||
| 70 | static void c2k_reset_board(void) | |
| 71 | { | |
| 72 | u32 temp; | |
| 73 | ||
| 74 | local_irq_disable(); | |
| 75 | ||
| 76 | temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0); | |
| 77 | temp &= 0xFFFF0FFF; | |
| 78 | out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp); | |
| 79 | ||
| 80 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); | |
| 81 | temp |= 0x00000004; | |
| 82 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); | |
| 83 | ||
| 84 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); | |
| 85 | temp |= 0x00000004; | |
| 86 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); | |
| 87 | ||
| 88 | temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2); | |
| 89 | temp &= 0xFFFF0FFF; | |
| 90 | out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp); | |
| 91 | ||
| 92 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); | |
| 93 | temp |= 0x00080000; | |
| 94 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); | |
| 95 | ||
| 96 | temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); | |
| 97 | temp |= 0x00080000; | |
| 98 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); | |
| 99 | ||
| 100 | out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004); | |
| 101 | } | |
| 102 | ||
| 103 | static void c2k_restart(char *cmd) | |
| 104 | { | |
| 105 | c2k_reset_board(); | |
| 106 | msleep(100); | |
| 107 | panic("restart failed\n"); | |
| 108 | } | |
| 109 | ||
| 110 | #ifdef CONFIG_NOT_COHERENT_CACHE | |
| 111 | #define COHERENCY_SETTING "off" | |
| 112 | #else | |
| 113 | #define COHERENCY_SETTING "on" | |
| 114 | #endif | |
| 115 | ||
| 116 | void c2k_show_cpuinfo(struct seq_file *m) | |
| 117 | { | |
| 46388c0d | 118 | seq_printf(m, "Vendor\t\t: GEFanuc\n"); |
| 46388c0d RM |
119 | seq_printf(m, "coherency\t: %s\n", COHERENCY_SETTING); |
| 120 | } | |
| 121 | ||
| 122 | /* | |
| 123 | * Called very early, device-tree isn't unflattened | |
| 124 | */ | |
| 125 | static int __init c2k_probe(void) | |
| 126 | { | |
| 127 | unsigned long root = of_get_flat_dt_root(); | |
| 128 | ||
| 129 | if (!of_flat_dt_is_compatible(root, "GEFanuc,C2K")) | |
| 130 | return 0; | |
| 131 | ||
| 132 | printk(KERN_INFO "Detected a GEFanuc C2K board\n"); | |
| 133 | ||
| 134 | _set_L2CR(0); | |
| 135 | _set_L2CR(L2CR_L2E | L2CR_L2PE | L2CR_L2I); | |
| 136 | return 1; | |
| 137 | } | |
| 138 | ||
| 139 | define_machine(c2k) { | |
| 140 | .name = "C2K", | |
| 141 | .probe = c2k_probe, | |
| 142 | .setup_arch = c2k_setup_arch, | |
| 143 | .init_early = mv64x60_init_early, | |
| 144 | .show_cpuinfo = c2k_show_cpuinfo, | |
| 145 | .init_IRQ = mv64x60_init_irq, | |
| 146 | .get_irq = mv64x60_get_irq, | |
| 147 | .restart = c2k_restart, | |
| 148 | .calibrate_decr = generic_calibrate_decr, | |
| 46388c0d | 149 | }; |