Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | /* * Board setup routines for the Motorola PrPMC2800 * * Author: Dale Farnsworth <dale@farnsworth.org> * * 2007 (c) MontaVista, Software, Inc. This file is licensed under * the terms of the GNU General Public License version 2. This program * is licensed "as is" without any warranty of any kind, whether express * or implied. */ #include <linux/stddef.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/seq_file.h> #include <asm/machdep.h> #include <asm/prom.h> #include <asm/system.h> #include <asm/time.h> #include <asm/kexec.h> #include <mm/mmu_decl.h> #include <sysdev/mv64x60.h> #define MV64x60_MPP_CNTL_0 0x0000 #define MV64x60_MPP_CNTL_2 0x0008 #define MV64x60_GPP_IO_CNTL 0x0000 #define MV64x60_GPP_LEVEL_CNTL 0x0010 #define MV64x60_GPP_VALUE_SET 0x0018 #define PLATFORM_NAME_MAX 32 static char prpmc2800_platform_name[PLATFORM_NAME_MAX]; static void __iomem *mv64x60_mpp_reg_base; static void __iomem *mv64x60_gpp_reg_base; static void __init prpmc2800_setup_arch(void) { struct device_node *np; phys_addr_t paddr; const unsigned int *reg; const unsigned int *prop; /* * ioremap mpp and gpp registers in case they are later * needed by prpmc2800_reset_board(). */ np = of_find_compatible_node(NULL, NULL, "marvell,mv64x60-mpp"); reg = of_get_property(np, "reg", NULL); paddr = of_translate_address(np, reg); of_node_put(np); mv64x60_mpp_reg_base = ioremap(paddr, reg[1]); np = of_find_compatible_node(NULL, NULL, "marvell,mv64x60-gpp"); reg = of_get_property(np, "reg", NULL); paddr = of_translate_address(np, reg); of_node_put(np); mv64x60_gpp_reg_base = ioremap(paddr, reg[1]); np = of_find_node_by_type(NULL, "cpu"); prop = of_get_property(np, "clock-frequency", NULL); if (prop) loops_per_jiffy = *prop / HZ; of_node_put(np); #ifdef CONFIG_PCI mv64x60_pci_init(); #endif printk("Motorola %s\n", prpmc2800_platform_name); } static void prpmc2800_reset_board(void) { u32 temp; local_irq_disable(); temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0); temp &= 0xFFFF0FFF; out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_0, temp); temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); temp |= 0x00000004; out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); temp |= 0x00000004; out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); temp = in_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2); temp &= 0xFFFF0FFF; out_le32(mv64x60_mpp_reg_base + MV64x60_MPP_CNTL_2, temp); temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL); temp |= 0x00080000; out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_LEVEL_CNTL, temp); temp = in_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL); temp |= 0x00080000; out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_IO_CNTL, temp); out_le32(mv64x60_gpp_reg_base + MV64x60_GPP_VALUE_SET, 0x00080004); } static void prpmc2800_restart(char *cmd) { volatile ulong i = 10000000; prpmc2800_reset_board(); while (i-- > 0); panic("restart failed\n"); } #ifdef CONFIG_NOT_COHERENT_CACHE #define PPRPM2800_COHERENCY_SETTING "off" #else #define PPRPM2800_COHERENCY_SETTING "on" #endif void prpmc2800_show_cpuinfo(struct seq_file *m) { uint memsize = total_memory; seq_printf(m, "Vendor\t\t: Motorola\n"); seq_printf(m, "Memory\t\t: %d MB\n", memsize / (1024 * 1024)); seq_printf(m, "coherency\t: %s\n", PPRPM2800_COHERENCY_SETTING); } /* * Called very early, device-tree isn't unflattened */ static int __init prpmc2800_probe(void) { unsigned long root = of_get_flat_dt_root(); unsigned long len = PLATFORM_NAME_MAX; void *m; if (!of_flat_dt_is_compatible(root, "motorola,PrPMC2800")) return 0; /* Update ppc_md.name with name from dt */ m = of_get_flat_dt_prop(root, "model", &len); if (m) strncpy(prpmc2800_platform_name, m, min((int)len, PLATFORM_NAME_MAX - 1)); return 1; } define_machine(prpmc2800){ .name = prpmc2800_platform_name, .probe = prpmc2800_probe, .setup_arch = prpmc2800_setup_arch, .show_cpuinfo = prpmc2800_show_cpuinfo, .init_IRQ = mv64x60_init_irq, .get_irq = mv64x60_get_irq, .restart = prpmc2800_restart, .calibrate_decr = generic_calibrate_decr, #ifdef CONFIG_KEXEC .machine_kexec = default_machine_kexec, .machine_kexec_prepare = default_machine_kexec_prepare, .machine_crash_shutdown = default_machine_crash_shutdown, #endif }; |