1 /* 2 * Board setup routines for the Emerson KSI8560 3 * 4 * Author: Alexandr Smirnov <asmirnov@ru.mvista.com> 5 * 6 * Based on mpc85xx_ads.c maintained by Kumar Gala 7 * 8 * 2008 (c) MontaVista, Software, Inc. This file is licensed under 9 * the terms of the GNU General Public License version 2. This program 10 * is licensed "as is" without any warranty of any kind, whether express 11 * or implied. 12 * 13 */ 14 15 #include <linux/stddef.h> 16 #include <linux/kernel.h> 17 #include <linux/pci.h> 18 #include <linux/kdev_t.h> 19 #include <linux/delay.h> 20 #include <linux/seq_file.h> 21 #include <linux/of_platform.h> 22 23 #include <asm/system.h> 24 #include <asm/time.h> 25 #include <asm/machdep.h> 26 #include <asm/pci-bridge.h> 27 #include <asm/mpic.h> 28 #include <mm/mmu_decl.h> 29 #include <asm/udbg.h> 30 #include <asm/prom.h> 31 32 #include <sysdev/fsl_soc.h> 33 #include <sysdev/fsl_pci.h> 34 35 #include <asm/cpm2.h> 36 #include <sysdev/cpm2_pic.h> 37 38 #include "mpc85xx.h" 39 40 #define KSI8560_CPLD_HVR 0x04 /* Hardware Version Register */ 41 #define KSI8560_CPLD_PVR 0x08 /* PLD Version Register */ 42 #define KSI8560_CPLD_RCR1 0x30 /* Reset Command Register 1 */ 43 44 #define KSI8560_CPLD_RCR1_CPUHR 0x80 /* CPU Hard Reset */ 45 46 static void __iomem *cpld_base = NULL; 47 48 static void machine_restart(char *cmd) 49 { 50 if (cpld_base) 51 out_8(cpld_base + KSI8560_CPLD_RCR1, KSI8560_CPLD_RCR1_CPUHR); 52 else 53 printk(KERN_ERR "Can't find CPLD base, hang forever\n"); 54 55 for (;;); 56 } 57 58 static void __init ksi8560_pic_init(void) 59 { 60 struct mpic *mpic = mpic_alloc(NULL, 0, 61 MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 62 0, 256, " OpenPIC "); 63 BUG_ON(mpic == NULL); 64 mpic_init(mpic); 65 66 mpc85xx_cpm2_pic_init(); 67 } 68 69 #ifdef CONFIG_CPM2 70 /* 71 * Setup I/O ports 72 */ 73 struct cpm_pin { 74 int port, pin, flags; 75 }; 76 77 static struct cpm_pin __initdata ksi8560_pins[] = { 78 /* SCC1 */ 79 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 80 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 81 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 82 83 /* SCC2 */ 84 {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 85 {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 86 {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 87 88 /* FCC1 */ 89 {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 90 {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 91 {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 92 {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 93 {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 94 {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 95 {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 96 {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 97 {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 98 {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 99 {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 100 {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 101 {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 102 {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 103 {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */ 104 {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */ 105 106 }; 107 108 static void __init init_ioports(void) 109 { 110 int i; 111 112 for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) { 113 struct cpm_pin *pin = &ksi8560_pins[i]; 114 cpm2_set_pin(pin->port, pin->pin, pin->flags); 115 } 116 117 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); 118 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); 119 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); 120 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); 121 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX); 122 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX); 123 } 124 #endif 125 126 /* 127 * Setup the architecture 128 */ 129 static void __init ksi8560_setup_arch(void) 130 { 131 struct device_node *cpld; 132 133 cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld"); 134 if (cpld) 135 cpld_base = of_iomap(cpld, 0); 136 else 137 printk(KERN_ERR "Can't find CPLD in device tree\n"); 138 139 if (ppc_md.progress) 140 ppc_md.progress("ksi8560_setup_arch()", 0); 141 142 #ifdef CONFIG_CPM2 143 cpm2_reset(); 144 init_ioports(); 145 #endif 146 } 147 148 static void ksi8560_show_cpuinfo(struct seq_file *m) 149 { 150 uint pvid, svid, phid1; 151 152 pvid = mfspr(SPRN_PVR); 153 svid = mfspr(SPRN_SVR); 154 155 seq_printf(m, "Vendor\t\t: Emerson Network Power\n"); 156 seq_printf(m, "Board\t\t: KSI8560\n"); 157 158 if (cpld_base) { 159 seq_printf(m, "Hardware rev\t: %d\n", 160 in_8(cpld_base + KSI8560_CPLD_HVR)); 161 seq_printf(m, "CPLD rev\t: %d\n", 162 in_8(cpld_base + KSI8560_CPLD_PVR)); 163 } else 164 seq_printf(m, "Unknown Hardware and CPLD revs\n"); 165 166 seq_printf(m, "PVR\t\t: 0x%x\n", pvid); 167 seq_printf(m, "SVR\t\t: 0x%x\n", svid); 168 169 /* Display cpu Pll setting */ 170 phid1 = mfspr(SPRN_HID1); 171 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); 172 } 173 174 machine_device_initcall(ksi8560, mpc85xx_common_publish_devices); 175 176 /* 177 * Called very early, device-tree isn't unflattened 178 */ 179 static int __init ksi8560_probe(void) 180 { 181 unsigned long root = of_get_flat_dt_root(); 182 183 return of_flat_dt_is_compatible(root, "emerson,KSI8560"); 184 } 185 186 define_machine(ksi8560) { 187 .name = "KSI8560", 188 .probe = ksi8560_probe, 189 .setup_arch = ksi8560_setup_arch, 190 .init_IRQ = ksi8560_pic_init, 191 .show_cpuinfo = ksi8560_show_cpuinfo, 192 .get_irq = mpic_get_irq, 193 .restart = machine_restart, 194 .calibrate_decr = generic_calibrate_decr, 195 }; 196