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 39#define KSI8560_CPLD_HVR 0x04 /* Hardware Version Register */ 40#define KSI8560_CPLD_PVR 0x08 /* PLD Version Register */ 41#define KSI8560_CPLD_RCR1 0x30 /* Reset Command Register 1 */ 42 43#define KSI8560_CPLD_RCR1_CPUHR 0x80 /* CPU Hard Reset */ 44 45static void __iomem *cpld_base = NULL; 46 47static void machine_restart(char *cmd) 48{ 49 if (cpld_base) 50 out_8(cpld_base + KSI8560_CPLD_RCR1, KSI8560_CPLD_RCR1_CPUHR); 51 else 52 printk(KERN_ERR "Can't find CPLD base, hang forever\n"); 53 54 for (;;); 55} 56 57static void cpm2_cascade(unsigned int irq, struct irq_desc *desc) 58{ 59 int cascade_irq; 60 61 while ((cascade_irq = cpm2_get_irq()) >= 0) 62 generic_handle_irq(cascade_irq); 63 64 desc->chip->eoi(irq); 65} 66 67static void __init ksi8560_pic_init(void) 68{ 69 struct mpic *mpic; 70 struct resource r; 71 struct device_node *np; 72#ifdef CONFIG_CPM2 73 int irq; 74#endif 75 76 np = of_find_node_by_type(NULL, "open-pic"); 77 78 if (np == NULL) { 79 printk(KERN_ERR "Could not find open-pic node\n"); 80 return; 81 } 82 83 if (of_address_to_resource(np, 0, &r)) { 84 printk(KERN_ERR "Could not map mpic register space\n"); 85 of_node_put(np); 86 return; 87 } 88 89 mpic = mpic_alloc(np, r.start, 90 MPIC_PRIMARY | MPIC_WANTS_RESET | MPIC_BIG_ENDIAN, 91 0, 256, " OpenPIC "); 92 BUG_ON(mpic == NULL); 93 of_node_put(np); 94 95 mpic_init(mpic); 96 97#ifdef CONFIG_CPM2 98 /* Setup CPM2 PIC */ 99 np = of_find_compatible_node(NULL, NULL, "fsl,cpm2-pic"); 100 if (np == NULL) { 101 printk(KERN_ERR "PIC init: can not find fsl,cpm2-pic node\n"); 102 return; 103 } 104 irq = irq_of_parse_and_map(np, 0); 105 106 cpm2_pic_init(np); 107 of_node_put(np); 108 set_irq_chained_handler(irq, cpm2_cascade); 109#endif 110} 111 112#ifdef CONFIG_CPM2 113/* 114 * Setup I/O ports 115 */ 116struct cpm_pin { 117 int port, pin, flags; 118}; 119 120static struct cpm_pin __initdata ksi8560_pins[] = { 121 /* SCC1 */ 122 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 123 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 124 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 125 126 /* SCC2 */ 127 {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 128 {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 129 {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 130 131 /* FCC1 */ 132 {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 133 {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 134 {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 135 {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 136 {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 137 {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 138 {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 139 {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 140 {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 141 {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 142 {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 143 {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 144 {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 145 {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 146 {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */ 147 {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */ 148 149}; 150 151static void __init init_ioports(void) 152{ 153 int i; 154 155 for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) { 156 struct cpm_pin *pin = &ksi8560_pins[i]; 157 cpm2_set_pin(pin->port, pin->pin, pin->flags); 158 } 159 160 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); 161 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); 162 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); 163 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); 164 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX); 165 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX); 166} 167#endif 168 169/* 170 * Setup the architecture 171 */ 172static void __init ksi8560_setup_arch(void) 173{ 174 struct device_node *cpld; 175 176 cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld"); 177 if (cpld) 178 cpld_base = of_iomap(cpld, 0); 179 else 180 printk(KERN_ERR "Can't find CPLD in device tree\n"); 181 182 if (ppc_md.progress) 183 ppc_md.progress("ksi8560_setup_arch()", 0); 184 185#ifdef CONFIG_CPM2 186 cpm2_reset(); 187 init_ioports(); 188#endif 189} 190 191static void ksi8560_show_cpuinfo(struct seq_file *m) 192{ 193 uint pvid, svid, phid1; 194 195 pvid = mfspr(SPRN_PVR); 196 svid = mfspr(SPRN_SVR); 197 198 seq_printf(m, "Vendor\t\t: Emerson Network Power\n"); 199 seq_printf(m, "Board\t\t: KSI8560\n"); 200 201 if (cpld_base) { 202 seq_printf(m, "Hardware rev\t: %d\n", 203 in_8(cpld_base + KSI8560_CPLD_HVR)); 204 seq_printf(m, "CPLD rev\t: %d\n", 205 in_8(cpld_base + KSI8560_CPLD_PVR)); 206 } else 207 seq_printf(m, "Unknown Hardware and CPLD revs\n"); 208 209 seq_printf(m, "PVR\t\t: 0x%x\n", pvid); 210 seq_printf(m, "SVR\t\t: 0x%x\n", svid); 211 212 /* Display cpu Pll setting */ 213 phid1 = mfspr(SPRN_HID1); 214 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); 215} 216 217static struct of_device_id __initdata of_bus_ids[] = { 218 { .type = "soc", }, 219 { .type = "simple-bus", }, 220 { .name = "cpm", }, 221 { .name = "localbus", }, 222 { .compatible = "gianfar", }, 223 {}, 224}; 225 226static int __init declare_of_platform_devices(void) 227{ 228 of_platform_bus_probe(NULL, of_bus_ids, NULL); 229 230 return 0; 231} 232machine_device_initcall(ksi8560, declare_of_platform_devices); 233 234/* 235 * Called very early, device-tree isn't unflattened 236 */ 237static int __init ksi8560_probe(void) 238{ 239 unsigned long root = of_get_flat_dt_root(); 240 241 return of_flat_dt_is_compatible(root, "emerson,KSI8560"); 242} 243 244define_machine(ksi8560) { 245 .name = "KSI8560", 246 .probe = ksi8560_probe, 247 .setup_arch = ksi8560_setup_arch, 248 .init_IRQ = ksi8560_pic_init, 249 .show_cpuinfo = ksi8560_show_cpuinfo, 250 .get_irq = mpic_get_irq, 251 .restart = machine_restart, 252 .calibrate_decr = generic_calibrate_decr, 253}; 254