diff options
Diffstat (limited to 'kernel/arch/mips/bcm63xx/setup.c')
| -rw-r--r-- | kernel/arch/mips/bcm63xx/setup.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/kernel/arch/mips/bcm63xx/setup.c b/kernel/arch/mips/bcm63xx/setup.c new file mode 100644 index 000000000..240fb4ffa --- /dev/null +++ b/kernel/arch/mips/bcm63xx/setup.c @@ -0,0 +1,170 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> + */ + +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/bootmem.h> +#include <linux/ioport.h> +#include <linux/pm.h> +#include <asm/bootinfo.h> +#include <asm/time.h> +#include <asm/reboot.h> +#include <asm/cacheflush.h> +#include <bcm63xx_board.h> +#include <bcm63xx_cpu.h> +#include <bcm63xx_regs.h> +#include <bcm63xx_io.h> +#include <bcm63xx_gpio.h> + +void bcm63xx_machine_halt(void) +{ + printk(KERN_INFO "System halted\n"); + while (1) + ; +} + +static void bcm6348_a1_reboot(void) +{ + u32 reg; + + /* soft reset all blocks */ + printk(KERN_INFO "soft-resetting all blocks ...\n"); + reg = bcm_perf_readl(PERF_SOFTRESET_REG); + reg &= ~SOFTRESET_6348_ALL; + bcm_perf_writel(reg, PERF_SOFTRESET_REG); + mdelay(10); + + reg = bcm_perf_readl(PERF_SOFTRESET_REG); + reg |= SOFTRESET_6348_ALL; + bcm_perf_writel(reg, PERF_SOFTRESET_REG); + mdelay(10); + + /* Jump to the power on address. */ + printk(KERN_INFO "jumping to reset vector.\n"); + /* set high vectors (base at 0xbfc00000 */ + set_c0_status(ST0_BEV | ST0_ERL); + /* run uncached in kseg0 */ + change_c0_config(CONF_CM_CMASK, CONF_CM_UNCACHED); + __flush_cache_all(); + /* remove all wired TLB entries */ + write_c0_wired(0); + __asm__ __volatile__( + "jr\t%0" + : + : "r" (0xbfc00000)); + while (1) + ; +} + +void bcm63xx_machine_reboot(void) +{ + u32 reg, perf_regs[2] = { 0, 0 }; + unsigned int i; + + /* mask and clear all external irq */ + switch (bcm63xx_get_cpu_id()) { + case BCM3368_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_3368; + break; + case BCM6328_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_6328; + break; + case BCM6338_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_6338; + break; + case BCM6345_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_6345; + break; + case BCM6348_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_6348; + break; + case BCM6358_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_6358; + break; + case BCM6362_CPU_ID: + perf_regs[0] = PERF_EXTIRQ_CFG_REG_6362; + break; + } + + for (i = 0; i < 2; i++) { + if (!perf_regs[i]) + break; + + reg = bcm_perf_readl(perf_regs[i]); + if (BCMCPU_IS_6348()) { + reg &= ~EXTIRQ_CFG_MASK_ALL_6348; + reg |= EXTIRQ_CFG_CLEAR_ALL_6348; + } else { + reg &= ~EXTIRQ_CFG_MASK_ALL; + reg |= EXTIRQ_CFG_CLEAR_ALL; + } + bcm_perf_writel(reg, perf_regs[i]); + } + + if (BCMCPU_IS_6348() && (bcm63xx_get_cpu_rev() == 0xa1)) + bcm6348_a1_reboot(); + + printk(KERN_INFO "triggering watchdog soft-reset...\n"); + if (BCMCPU_IS_6328()) { + bcm_wdt_writel(1, WDT_SOFTRESET_REG); + } else { + reg = bcm_perf_readl(PERF_SYS_PLL_CTL_REG); + reg |= SYS_PLL_SOFT_RESET; + bcm_perf_writel(reg, PERF_SYS_PLL_CTL_REG); + } + while (1) + ; +} + +static void __bcm63xx_machine_reboot(char *p) +{ + bcm63xx_machine_reboot(); +} + +/* + * return system type in /proc/cpuinfo + */ +const char *get_system_type(void) +{ + static char buf[128]; + snprintf(buf, sizeof(buf), "bcm63xx/%s (0x%04x/0x%02X)", + board_get_name(), + bcm63xx_get_cpu_id(), bcm63xx_get_cpu_rev()); + return buf; +} + +void __init plat_time_init(void) +{ + mips_hpt_frequency = bcm63xx_get_cpu_freq() / 2; +} + +void __init plat_mem_setup(void) +{ + add_memory_region(0, bcm63xx_get_memory_size(), BOOT_MEM_RAM); + + _machine_halt = bcm63xx_machine_halt; + _machine_restart = __bcm63xx_machine_reboot; + pm_power_off = bcm63xx_machine_halt; + + set_io_port_base(0); + ioport_resource.start = 0; + ioport_resource.end = ~0; + + board_setup(); +} + +int __init bcm63xx_register_devices(void) +{ + /* register gpiochip */ + bcm63xx_gpio_init(); + + return board_register_devices(); +} + +arch_initcall(bcm63xx_register_devices); |