projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ee98e0f WZ |
1 | /* Board-specific reboot/shutdown routines |
| 2 | * | |
| 3 | * Copyright (c) 2009 Philippe Vachon <philippe@cowpig.ca> | |
| 4 | * | |
| 5 | * Copyright (C) 2009 Lemote Inc. | |
| f7a904df | 6 | * Author: Wu Zhangjin, wuzhangjin@gmail.com |
| 2ee98e0f WZ |
7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it | |
| 9 | * under the terms of the GNU General Public License as published by the | |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your | |
| 11 | * option) any later version. | |
| 12 | */ | |
| 13 | ||
| 14 | #include <linux/io.h> | |
| 15 | #include <linux/delay.h> | |
| 16 | #include <linux/types.h> | |
| 17 | ||
| 18 | #include <asm/bootinfo.h> | |
| 19 | ||
| 20 | #include <loongson.h> | |
| 21 | ||
| 22 | #include <cs5536/cs5536.h> | |
| 70ab711d | 23 | #include "ec_kb3310b.h" |
| 2ee98e0f WZ |
24 | |
| 25 | static void reset_cpu(void) | |
| 26 | { | |
| 27 | /* | |
| 28 | * reset cpu to full speed, this is needed when enabling cpu frequency | |
| 29 | * scalling | |
| 30 | */ | |
| 31 | LOONGSON_CHIPCFG0 |= 0x7; | |
| 32 | } | |
| 33 | ||
| 34 | /* reset support for fuloong2f */ | |
| 35 | ||
| 36 | static void fl2f_reboot(void) | |
| 37 | { | |
| 38 | reset_cpu(); | |
| 39 | ||
| 40 | /* send a reset signal to south bridge. | |
| 41 | * | |
| 42 | * NOTE: if enable "Power Management" in kernel, rtl8169 will not reset | |
| 43 | * normally with this reset operation and it will not work in PMON, but | |
| 44 | * you can type halt command and then reboot, seems the hardware reset | |
| 45 | * logic not work normally. | |
| 46 | */ | |
| 47 | { | |
| 48 | u32 hi, lo; | |
| 49 | _rdmsr(DIVIL_MSR_REG(DIVIL_SOFT_RESET), &hi, &lo); | |
| 50 | lo |= 0x00000001; | |
| 51 | _wrmsr(DIVIL_MSR_REG(DIVIL_SOFT_RESET), hi, lo); | |
| 52 | } | |
| 53 | } | |
| 54 | ||
| 55 | static void fl2f_shutdown(void) | |
| 56 | { | |
| 57 | u32 hi, lo, val; | |
| 58 | int gpio_base; | |
| 59 | ||
| 60 | /* get gpio base */ | |
| 61 | _rdmsr(DIVIL_MSR_REG(DIVIL_LBAR_GPIO), &hi, &lo); | |
| 62 | gpio_base = lo & 0xff00; | |
| 63 | ||
| 64 | /* make cs5536 gpio13 output enable */ | |
| 65 | val = inl(gpio_base + GPIOL_OUT_EN); | |
| 66 | val &= ~(1 << (16 + 13)); | |
| 67 | val |= (1 << 13); | |
| 68 | outl(val, gpio_base + GPIOL_OUT_EN); | |
| 69 | mmiowb(); | |
| 70 | /* make cs5536 gpio13 output low level voltage. */ | |
| 71 | val = inl(gpio_base + GPIOL_OUT_VAL) & ~(1 << (13)); | |
| 72 | val |= (1 << (16 + 13)); | |
| 73 | outl(val, gpio_base + GPIOL_OUT_VAL); | |
| 74 | mmiowb(); | |
| 75 | } | |
| 76 | ||
| 77 | /* reset support for yeeloong2f and mengloong2f notebook */ | |
| 78 | ||
| 2ee98e0f WZ |
79 | void ml2f_reboot(void) |
| 80 | { | |
| 81 | reset_cpu(); | |
| 82 | ||
| 83 | /* sending an reset signal to EC(embedded controller) */ | |
| 70ab711d | 84 | ec_write(REG_RESET, BIT_RESET_ON); |
| 2ee98e0f WZ |
85 | } |
| 86 | ||
| 87 | #define yl2f89_reboot ml2f_reboot | |
| 88 | ||
| 89 | /* menglong(7inches) laptop has different shutdown logic from 8.9inches */ | |
| 90 | #define EC_SHUTDOWN_IO_PORT_HIGH 0xff2d | |
| 91 | #define EC_SHUTDOWN_IO_PORT_LOW 0xff2e | |
| 92 | #define EC_SHUTDOWN_IO_PORT_DATA 0xff2f | |
| 93 | #define REG_SHUTDOWN_HIGH 0xFC | |
| 94 | #define REG_SHUTDOWN_LOW 0x29 | |
| 95 | #define BIT_SHUTDOWN_ON (1 << 1) | |
| 96 | ||
| 97 | static void ml2f_shutdown(void) | |
| 98 | { | |
| 99 | u8 val; | |
| 100 | u64 i; | |
| 101 | ||
| 102 | outb(REG_SHUTDOWN_HIGH, EC_SHUTDOWN_IO_PORT_HIGH); | |
| 103 | outb(REG_SHUTDOWN_LOW, EC_SHUTDOWN_IO_PORT_LOW); | |
| 104 | mmiowb(); | |
| 105 | val = inb(EC_SHUTDOWN_IO_PORT_DATA); | |
| 106 | outb(val & (~BIT_SHUTDOWN_ON), EC_SHUTDOWN_IO_PORT_DATA); | |
| 107 | mmiowb(); | |
| 108 | /* need enough wait here... how many microseconds needs? */ | |
| 109 | for (i = 0; i < 0x10000; i++) | |
| 110 | delay(); | |
| 111 | outb(val | BIT_SHUTDOWN_ON, EC_SHUTDOWN_IO_PORT_DATA); | |
| 112 | mmiowb(); | |
| 113 | } | |
| 114 | ||
| 115 | static void yl2f89_shutdown(void) | |
| 116 | { | |
| 117 | /* cpu-gpio0 output low */ | |
| 118 | LOONGSON_GPIODATA &= ~0x00000001; | |
| 119 | /* cpu-gpio0 as output */ | |
| 120 | LOONGSON_GPIOIE &= ~0x00000001; | |
| 121 | } | |
| 122 | ||
| 123 | void mach_prepare_reboot(void) | |
| 124 | { | |
| 125 | switch (mips_machtype) { | |
| 126 | case MACH_LEMOTE_FL2F: | |
| e13fb776 | 127 | case MACH_LEMOTE_NAS: |
| 6e552c9b | 128 | case MACH_LEMOTE_LL2F: |
| 2ee98e0f WZ |
129 | fl2f_reboot(); |
| 130 | break; | |
| 131 | case MACH_LEMOTE_ML2F7: | |
| 132 | ml2f_reboot(); | |
| 133 | break; | |
| 134 | case MACH_LEMOTE_YL2F89: | |
| 135 | yl2f89_reboot(); | |
| 136 | break; | |
| 137 | default: | |
| 138 | break; | |
| 139 | } | |
| 140 | } | |
| 141 | ||
| 142 | void mach_prepare_shutdown(void) | |
| 143 | { | |
| 144 | switch (mips_machtype) { | |
| 145 | case MACH_LEMOTE_FL2F: | |
| e13fb776 | 146 | case MACH_LEMOTE_NAS: |
| 6e552c9b | 147 | case MACH_LEMOTE_LL2F: |
| 2ee98e0f WZ |
148 | fl2f_shutdown(); |
| 149 | break; | |
| 150 | case MACH_LEMOTE_ML2F7: | |
| 151 | ml2f_shutdown(); | |
| 152 | break; | |
| 153 | case MACH_LEMOTE_YL2F89: | |
| 154 | yl2f89_shutdown(); | |
| 155 | break; | |
| 156 | default: | |
| 157 | break; | |
| 158 | } | |
| 159 | } |