ksi8560.c (4857B)
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/time.h> 24#include <asm/machdep.h> 25#include <asm/pci-bridge.h> 26#include <asm/mpic.h> 27#include <mm/mmu_decl.h> 28#include <asm/udbg.h> 29 30#include <sysdev/fsl_soc.h> 31#include <sysdev/fsl_pci.h> 32 33#include <asm/cpm2.h> 34#include <sysdev/cpm2_pic.h> 35 36#include "mpc85xx.h" 37 38#define KSI8560_CPLD_HVR 0x04 /* Hardware Version Register */ 39#define KSI8560_CPLD_PVR 0x08 /* PLD Version Register */ 40#define KSI8560_CPLD_RCR1 0x30 /* Reset Command Register 1 */ 41 42#define KSI8560_CPLD_RCR1_CPUHR 0x80 /* CPU Hard Reset */ 43 44static void __iomem *cpld_base = NULL; 45 46static void __noreturn machine_restart(char *cmd) 47{ 48 if (cpld_base) 49 out_8(cpld_base + KSI8560_CPLD_RCR1, KSI8560_CPLD_RCR1_CPUHR); 50 else 51 printk(KERN_ERR "Can't find CPLD base, hang forever\n"); 52 53 for (;;); 54} 55 56static void __init ksi8560_pic_init(void) 57{ 58 struct mpic *mpic = mpic_alloc(NULL, 0, MPIC_BIG_ENDIAN, 59 0, 256, " OpenPIC "); 60 BUG_ON(mpic == NULL); 61 mpic_init(mpic); 62 63 mpc85xx_cpm2_pic_init(); 64} 65 66#ifdef CONFIG_CPM2 67/* 68 * Setup I/O ports 69 */ 70struct cpm_pin { 71 int port, pin, flags; 72}; 73 74static struct cpm_pin __initdata ksi8560_pins[] = { 75 /* SCC1 */ 76 {3, 29, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 77 {3, 30, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 78 {3, 31, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 79 80 /* SCC2 */ 81 {3, 26, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 82 {3, 27, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 83 {3, 28, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 84 85 /* FCC1 */ 86 {0, 14, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 87 {0, 15, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 88 {0, 16, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 89 {0, 17, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, 90 {0, 18, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 91 {0, 19, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 92 {0, 20, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 93 {0, 21, CPM_PIN_OUTPUT | CPM_PIN_PRIMARY}, 94 {0, 26, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 95 {0, 27, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 96 {0, 28, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 97 {0, 29, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY}, 98 {0, 30, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 99 {0, 31, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, 100 {2, 23, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK9 */ 101 {2, 22, CPM_PIN_INPUT | CPM_PIN_PRIMARY}, /* CLK10 */ 102 103}; 104 105static void __init init_ioports(void) 106{ 107 int i; 108 109 for (i = 0; i < ARRAY_SIZE(ksi8560_pins); i++) { 110 struct cpm_pin *pin = &ksi8560_pins[i]; 111 cpm2_set_pin(pin->port, pin->pin, pin->flags); 112 } 113 114 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_RX); 115 cpm2_clk_setup(CPM_CLK_SCC1, CPM_BRG1, CPM_CLK_TX); 116 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_RX); 117 cpm2_clk_setup(CPM_CLK_SCC2, CPM_BRG2, CPM_CLK_TX); 118 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK9, CPM_CLK_RX); 119 cpm2_clk_setup(CPM_CLK_FCC1, CPM_CLK10, CPM_CLK_TX); 120} 121#endif 122 123/* 124 * Setup the architecture 125 */ 126static void __init ksi8560_setup_arch(void) 127{ 128 struct device_node *cpld; 129 130 cpld = of_find_compatible_node(NULL, NULL, "emerson,KSI8560-cpld"); 131 if (cpld) 132 cpld_base = of_iomap(cpld, 0); 133 else 134 printk(KERN_ERR "Can't find CPLD in device tree\n"); 135 136 if (ppc_md.progress) 137 ppc_md.progress("ksi8560_setup_arch()", 0); 138 139#ifdef CONFIG_CPM2 140 cpm2_reset(); 141 init_ioports(); 142#endif 143} 144 145static void ksi8560_show_cpuinfo(struct seq_file *m) 146{ 147 uint pvid, svid, phid1; 148 149 pvid = mfspr(SPRN_PVR); 150 svid = mfspr(SPRN_SVR); 151 152 seq_printf(m, "Vendor\t\t: Emerson Network Power\n"); 153 seq_printf(m, "Board\t\t: KSI8560\n"); 154 155 if (cpld_base) { 156 seq_printf(m, "Hardware rev\t: %d\n", 157 in_8(cpld_base + KSI8560_CPLD_HVR)); 158 seq_printf(m, "CPLD rev\t: %d\n", 159 in_8(cpld_base + KSI8560_CPLD_PVR)); 160 } else 161 seq_printf(m, "Unknown Hardware and CPLD revs\n"); 162 163 seq_printf(m, "PVR\t\t: 0x%x\n", pvid); 164 seq_printf(m, "SVR\t\t: 0x%x\n", svid); 165 166 /* Display cpu Pll setting */ 167 phid1 = mfspr(SPRN_HID1); 168 seq_printf(m, "PLL setting\t: 0x%x\n", ((phid1 >> 24) & 0x3f)); 169} 170 171machine_device_initcall(ksi8560, mpc85xx_common_publish_devices); 172 173/* 174 * Called very early, device-tree isn't unflattened 175 */ 176static int __init ksi8560_probe(void) 177{ 178 return of_machine_is_compatible("emerson,KSI8560"); 179} 180 181define_machine(ksi8560) { 182 .name = "KSI8560", 183 .probe = ksi8560_probe, 184 .setup_arch = ksi8560_setup_arch, 185 .init_IRQ = ksi8560_pic_init, 186 .show_cpuinfo = ksi8560_show_cpuinfo, 187 .get_irq = mpic_get_irq, 188 .restart = machine_restart, 189 .calibrate_decr = generic_calibrate_decr, 190};