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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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 | /****************************************************************************/ /* * linux/arch/sh/boards/snapgear/setup.c * * Copyright (C) 2002 David McCullough <davidm@snapgear.com> * Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org> * * Based on files with the following comments: * * Copyright (C) 2000 Kazumoto Kojima * * Modified for 7751 Solution Engine by * Ian da Silva and Jeremy Siegel, 2001. */ /****************************************************************************/ #include <linux/config.h> #include <linux/init.h> #include <linux/irq.h> #include <linux/interrupt.h> #include <linux/timer.h> #include <linux/delay.h> #include <linux/module.h> #include <linux/sched.h> #include <asm/machvec.h> #include <asm/mach/io.h> #include <asm/irq.h> #include <asm/io.h> #include <asm/cpu/timer.h> extern void (*board_time_init)(void); extern void secureedge5410_rtc_init(void); extern void pcibios_init(void); /****************************************************************************/ /* * EraseConfig handling functions */ static irqreturn_t eraseconfig_interrupt(int irq, void *dev_id, struct pt_regs *regs) { volatile char dummy __attribute__((unused)) = * (volatile char *) 0xb8000000; printk("SnapGear: erase switch interrupt!\n"); return IRQ_HANDLED; } static int __init eraseconfig_init(void) { printk("SnapGear: EraseConfig init\n"); /* Setup "EraseConfig" switch on external IRQ 0 */ if (request_irq(IRL0_IRQ, eraseconfig_interrupt, SA_INTERRUPT, "Erase Config", NULL)) printk("SnapGear: failed to register IRQ%d for Reset witch\n", IRL0_IRQ); else printk("SnapGear: registered EraseConfig switch on IRQ%d\n", IRL0_IRQ); return(0); } module_init(eraseconfig_init); /****************************************************************************/ /* * Initialize IRQ setting * * IRL0 = erase switch * IRL1 = eth0 * IRL2 = eth1 * IRL3 = crypto */ static void __init init_snapgear_IRQ(void) { /* enable individual interrupt mode for externals */ ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR); printk("Setup SnapGear IRQ/IPR ...\n"); make_ipr_irq(IRL0_IRQ, IRL0_IPR_ADDR, IRL0_IPR_POS, IRL0_PRIORITY); make_ipr_irq(IRL1_IRQ, IRL1_IPR_ADDR, IRL1_IPR_POS, IRL1_PRIORITY); make_ipr_irq(IRL2_IRQ, IRL2_IPR_ADDR, IRL2_IPR_POS, IRL2_PRIORITY); make_ipr_irq(IRL3_IRQ, IRL3_IPR_ADDR, IRL3_IPR_POS, IRL3_PRIORITY); } /****************************************************************************/ /* * Fast poll interrupt simulator. */ /* * Leave all of the fast timer/fast poll stuff commented out for now, since * it's not clear whether it actually works or not. Since it wasn't being used * at all in 2.4, we'll assume it's not sane for 2.6 either.. -- PFM */ #if 0 #define FAST_POLL 1000 //#define FAST_POLL_INTR #define FASTTIMER_IRQ 17 #define FASTTIMER_IPR_ADDR INTC_IPRA #define FASTTIMER_IPR_POS 2 #define FASTTIMER_PRIORITY 3 #ifdef FAST_POLL_INTR #define TMU1_TCR_INIT 0x0020 #else #define TMU1_TCR_INIT 0 #endif #define TMU_TSTR_INIT 1 #define TMU1_TCR_CALIB 0x0000 #ifdef FAST_POLL_INTR static void fast_timer_irq(int irq, void *dev_instance, struct pt_regs *regs) { unsigned long timer_status; timer_status = ctrl_inw(TMU1_TCR); timer_status &= ~0x100; ctrl_outw(timer_status, TMU1_TCR); } #endif /* * return the current ticks on the fast timer */ unsigned long fast_timer_count(void) { return(ctrl_inl(TMU1_TCNT)); } /* * setup a fast timer for profiling etc etc */ static void setup_fast_timer() { unsigned long interval; #ifdef FAST_POLL_INTR interval = (current_cpu_data.module_clock/4 + FAST_POLL/2) / FAST_POLL; make_ipr_irq(FASTTIMER_IRQ, FASTTIMER_IPR_ADDR, FASTTIMER_IPR_POS, FASTTIMER_PRIORITY); printk("SnapGear: %dHz fast timer on IRQ %d\n",FAST_POLL,FASTTIMER_IRQ); if (request_irq(FASTTIMER_IRQ, fast_timer_irq, 0, "SnapGear fast timer", NULL) != 0) printk("%s(%d): request_irq() failed?\n", __FILE__, __LINE__); #else printk("SnapGear: fast timer running\n",FAST_POLL,FASTTIMER_IRQ); interval = 0xffffffff; #endif ctrl_outb(ctrl_inb(TMU_TSTR) & ~0x2, TMU_TSTR); /* disable timer 1 */ ctrl_outw(TMU1_TCR_INIT, TMU1_TCR); ctrl_outl(interval, TMU1_TCOR); ctrl_outl(interval, TMU1_TCNT); ctrl_outb(ctrl_inb(TMU_TSTR) | 0x2, TMU_TSTR); /* enable timer 1 */ printk("Timer count 1 = 0x%x\n", fast_timer_count()); udelay(1000); printk("Timer count 2 = 0x%x\n", fast_timer_count()); } #endif /****************************************************************************/ const char *get_system_type(void) { return "SnapGear SecureEdge5410"; } /* * The Machine Vector */ struct sh_machine_vector mv_snapgear __initmv = { .mv_nr_irqs = 72, .mv_inb = snapgear_inb, .mv_inw = snapgear_inw, .mv_inl = snapgear_inl, .mv_outb = snapgear_outb, .mv_outw = snapgear_outw, .mv_outl = snapgear_outl, .mv_inb_p = snapgear_inb_p, .mv_inw_p = snapgear_inw, .mv_inl_p = snapgear_inl, .mv_outb_p = snapgear_outb_p, .mv_outw_p = snapgear_outw, .mv_outl_p = snapgear_outl, .mv_isa_port2addr = snapgear_isa_port2addr, .mv_init_irq = init_snapgear_IRQ, }; ALIAS_MV(snapgear) /* * Initialize the board */ int __init platform_setup(void) { board_time_init = secureedge5410_rtc_init; return 0; } |