| Maxime Bizon | e7300d0 | 2009-08-18 13:23:37 +0100 | [diff] [blame] | 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 | { |
| 66 | u32 reg; |
| 67 | |
| 68 | /* mask and clear all external irq */ |
| 69 | reg = bcm_perf_readl(PERF_EXTIRQ_CFG_REG); |
| 70 | reg &= ~EXTIRQ_CFG_MASK_ALL; |
| 71 | reg |= EXTIRQ_CFG_CLEAR_ALL; |
| 72 | bcm_perf_writel(reg, PERF_EXTIRQ_CFG_REG); |
| 73 | |
| 74 | if (BCMCPU_IS_6348() && (bcm63xx_get_cpu_rev() == 0xa1)) |
| 75 | bcm6348_a1_reboot(); |
| 76 | |
| 77 | printk(KERN_INFO "triggering watchdog soft-reset...\n"); |
| 78 | bcm_perf_writel(SYS_PLL_SOFT_RESET, PERF_SYS_PLL_CTL_REG); |
| 79 | while (1) |
| 80 | ; |
| 81 | } |
| 82 | |
| 83 | static void __bcm63xx_machine_reboot(char *p) |
| 84 | { |
| 85 | bcm63xx_machine_reboot(); |
| 86 | } |
| 87 | |
| 88 | /* |
| 89 | * return system type in /proc/cpuinfo |
| 90 | */ |
| 91 | const char *get_system_type(void) |
| 92 | { |
| 93 | static char buf[128]; |
| 94 | snprintf(buf, sizeof(buf), "bcm63xx/%s (0x%04x/0x%04X)", |
| 95 | board_get_name(), |
| 96 | bcm63xx_get_cpu_id(), bcm63xx_get_cpu_rev()); |
| 97 | return buf; |
| 98 | } |
| 99 | |
| 100 | void __init plat_time_init(void) |
| 101 | { |
| 102 | mips_hpt_frequency = bcm63xx_get_cpu_freq() / 2; |
| 103 | } |
| 104 | |
| 105 | void __init plat_mem_setup(void) |
| 106 | { |
| 107 | add_memory_region(0, bcm63xx_get_memory_size(), BOOT_MEM_RAM); |
| 108 | |
| 109 | _machine_halt = bcm63xx_machine_halt; |
| 110 | _machine_restart = __bcm63xx_machine_reboot; |
| 111 | pm_power_off = bcm63xx_machine_halt; |
| 112 | |
| 113 | set_io_port_base(0); |
| 114 | ioport_resource.start = 0; |
| 115 | ioport_resource.end = ~0; |
| 116 | |
| 117 | board_setup(); |
| 118 | } |
| 119 | |
| 120 | int __init bcm63xx_register_devices(void) |
| 121 | { |
| 122 | return board_register_devices(); |
| 123 | } |
| 124 | |
| 125 | arch_initcall(bcm63xx_register_devices); |