projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| e7300d04 MB |
1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public | |
| 3 | * License. See the file "COPYING" in the main directory of this archive | |
| 4 | * for more details. | |
| 5 | * | |
| 6 | * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> | |
| 7 | */ | |
| 8 | ||
| 9 | #include <linux/init.h> | |
| 10 | #include <linux/kernel.h> | |
| 11 | #include <linux/delay.h> | |
| 12 | #include <linux/bootmem.h> | |
| 13 | #include <linux/ioport.h> | |
| 14 | #include <linux/pm.h> | |
| 15 | #include <asm/bootinfo.h> | |
| 16 | #include <asm/time.h> | |
| 17 | #include <asm/reboot.h> | |
| 18 | #include <asm/cacheflush.h> | |
| 19 | #include <bcm63xx_board.h> | |
| 20 | #include <bcm63xx_cpu.h> | |
| 21 | #include <bcm63xx_regs.h> | |
| 22 | #include <bcm63xx_io.h> | |
| 23 | ||
| 24 | void bcm63xx_machine_halt(void) | |
| 25 | { | |
| 26 | printk(KERN_INFO "System halted\n"); | |
| 27 | while (1) | |
| 28 | ; | |
| 29 | } | |
| 30 | ||
| 31 | static void bcm6348_a1_reboot(void) | |
| 32 | { | |
| 33 | u32 reg; | |
| 34 | ||
| 35 | /* soft reset all blocks */ | |
| 36 | printk(KERN_INFO "soft-reseting all blocks ...\n"); | |
| 37 | reg = bcm_perf_readl(PERF_SOFTRESET_REG); | |
| 38 | reg &= ~SOFTRESET_6348_ALL; | |
| 39 | bcm_perf_writel(reg, PERF_SOFTRESET_REG); | |
| 40 | mdelay(10); | |
| 41 | ||
| 42 | reg = bcm_perf_readl(PERF_SOFTRESET_REG); | |
| 43 | reg |= SOFTRESET_6348_ALL; | |
| 44 | bcm_perf_writel(reg, PERF_SOFTRESET_REG); | |
| 45 | mdelay(10); | |
| 46 | ||
| 47 | /* Jump to the power on address. */ | |
| 48 | printk(KERN_INFO "jumping to reset vector.\n"); | |
| 49 | /* set high vectors (base at 0xbfc00000 */ | |
| 50 | set_c0_status(ST0_BEV | ST0_ERL); | |
| 51 | /* run uncached in kseg0 */ | |
| 52 | change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED); | |
| 53 | __flush_cache_all(); | |
| 54 | /* remove all wired TLB entries */ | |
| 55 | write_c0_wired(0); | |
| 56 | __asm__ __volatile__( | |
| 57 | "jr\t%0" | |
| 58 | : | |
| 59 | : "r" (0xbfc00000)); | |
| 60 | while (1) | |
| 61 | ; | |
| 62 | } | |
| 63 | ||
| 64 | void bcm63xx_machine_reboot(void) | |
| 65 | { | |
| 6224892c MB |
66 | u32 reg, perf_regs[2] = { 0, 0 }; |
| 67 | unsigned int i; | |
| e7300d04 MB |
68 | |
| 69 | /* mask and clear all external irq */ | |
| 6224892c MB |
70 | switch (bcm63xx_get_cpu_id()) { |
| 71 | case BCM6338_CPU_ID: | |
| 72 | perf_regs[0] = PERF_EXTIRQ_CFG_REG_6338; | |
| 73 | break; | |
| 74 | case BCM6348_CPU_ID: | |
| 75 | perf_regs[0] = PERF_EXTIRQ_CFG_REG_6348; | |
| 76 | break; | |
| 77 | case BCM6358_CPU_ID: | |
| 78 | perf_regs[0] = PERF_EXTIRQ_CFG_REG_6358; | |
| 79 | break; | |
| 80 | } | |
| 81 | ||
| 82 | for (i = 0; i < 2; i++) { | |
| 83 | reg = bcm_perf_readl(perf_regs[i]); | |
| 84 | if (BCMCPU_IS_6348()) { | |
| 85 | reg &= ~EXTIRQ_CFG_MASK_ALL_6348; | |
| 86 | reg |= EXTIRQ_CFG_CLEAR_ALL_6348; | |
| 87 | } else { | |
| 88 | reg &= ~EXTIRQ_CFG_MASK_ALL; | |
| 89 | reg |= EXTIRQ_CFG_CLEAR_ALL; | |
| 90 | } | |
| 91 | bcm_perf_writel(reg, perf_regs[i]); | |
| 92 | } | |
| e7300d04 MB |
93 | |
| 94 | if (BCMCPU_IS_6348() && (bcm63xx_get_cpu_rev() == 0xa1)) | |
| 95 | bcm6348_a1_reboot(); | |
| 96 | ||
| 97 | printk(KERN_INFO "triggering watchdog soft-reset...\n"); | |
| e85d59df FF |
98 | reg = bcm_perf_readl(PERF_SYS_PLL_CTL_REG); |
| 99 | reg |= SYS_PLL_SOFT_RESET; | |
| 100 | bcm_perf_writel(reg, PERF_SYS_PLL_CTL_REG); | |
| e7300d04 MB |
101 | while (1) |
| 102 | ; | |
| 103 | } | |
| 104 | ||
| 105 | static void __bcm63xx_machine_reboot(char *p) | |
| 106 | { | |
| 107 | bcm63xx_machine_reboot(); | |
| 108 | } | |
| 109 | ||
| 110 | /* | |
| 111 | * return system type in /proc/cpuinfo | |
| 112 | */ | |
| 113 | const char *get_system_type(void) | |
| 114 | { | |
| 115 | static char buf[128]; | |
| 116 | snprintf(buf, sizeof(buf), "bcm63xx/%s (0x%04x/0x%04X)", | |
| 117 | board_get_name(), | |
| 118 | bcm63xx_get_cpu_id(), bcm63xx_get_cpu_rev()); | |
| 119 | return buf; | |
| 120 | } | |
| 121 | ||
| 122 | void __init plat_time_init(void) | |
| 123 | { | |
| 124 | mips_hpt_frequency = bcm63xx_get_cpu_freq() / 2; | |
| 125 | } | |
| 126 | ||
| 127 | void __init plat_mem_setup(void) | |
| 128 | { | |
| 129 | add_memory_region(0, bcm63xx_get_memory_size(), BOOT_MEM_RAM); | |
| 130 | ||
| 131 | _machine_halt = bcm63xx_machine_halt; | |
| 132 | _machine_restart = __bcm63xx_machine_reboot; | |
| 133 | pm_power_off = bcm63xx_machine_halt; | |
| 134 | ||
| 135 | set_io_port_base(0); | |
| 136 | ioport_resource.start = 0; | |
| 137 | ioport_resource.end = ~0; | |
| 138 | ||
| 139 | board_setup(); | |
| 140 | } | |
| 141 | ||
| 142 | int __init bcm63xx_register_devices(void) | |
| 143 | { | |
| 144 | return board_register_devices(); | |
| 145 | } | |
| 146 | ||
| d64ed7ad | 147 | device_initcall(bcm63xx_register_devices); |