diff options
Diffstat (limited to 'target/linux/amazon/files/arch/mips/amazon/setup.c')
| -rw-r--r-- | target/linux/amazon/files/arch/mips/amazon/setup.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/target/linux/amazon/files/arch/mips/amazon/setup.c b/target/linux/amazon/files/arch/mips/amazon/setup.c deleted file mode 100644 index ff1a109d44..0000000000 --- a/target/linux/amazon/files/arch/mips/amazon/setup.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * Copyright (C) 2004 Peng Liu <peng.liu@infineon.com> - * Copyright (C) 2007 John Crispin <blogic@openwrt.org> - * Copyright (C) 2007 Felix Fietkau <nbd@openwrt.org> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - * - */ - -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/module.h> -#include <linux/interrupt.h> -#include <linux/delay.h> - -#include <asm/reboot.h> -#include <asm/system.h> -#include <asm/time.h> -#include <asm/cpu.h> -#include <asm/bootinfo.h> -#include <asm/irq.h> -#include <asm/mipsregs.h> -#include <asm/amazon/amazon.h> -#include <asm/amazon/irq.h> -#include <asm/amazon/model.h> - -static unsigned int r4k_offset; -static unsigned int r4k_cur; - -/* required in arch/mips/kernel/kspd.c */ -unsigned long cpu_khz; - -static void amazon_reboot_setup(void); - -/* the CPU clock rate - lifted from u-boot */ -unsigned int amazon_get_cpu_hz(void) -{ - /*-----------------------------------*/ - /**CGU CPU Clock Reduction Register***/ - /*-----------------------------------*/ - switch(amazon_readl(AMAZON_CGU_CPUCRD) & 0x3){ - case 0: - /*divider ration 1/1, 235 MHz clock */ - return 235000000; - case 1: - /*divider ration 2/3, 235 MHz clock, clock not accurate, here */ - return 150000000; - case 2: - /*divider ration 1/2, 235 MHz clock */ - return 117500000; - default: - /*divider ration 1/4, 235 MHz clock */ - return 58750000; - } -} - -/* the FPI clock rate - lifted from u-boot */ -unsigned int amazon_get_fpi_hz(void) -{ - unsigned int clkCPU; - clkCPU = amazon_get_cpu_hz(); - - /*-------------------------------------*/ - /***CGU Clock Divider Select Register***/ - /*-------------------------------------*/ - switch (amazon_readl(AMAZON_CGU_DIV) & 0x3) - { - case 1: - return clkCPU >> 1; - case 2: - return clkCPU >> 2; - default: - return clkCPU; - /* '11' is reserved */ - } -} -EXPORT_SYMBOL(amazon_get_fpi_hz); - -/* this doesn't really belong here, but it's a convenient location */ -unsigned int amazon_get_cpu_ver(void) -{ - static unsigned int cpu_ver = 0; - if (cpu_ver == 0) - cpu_ver = amazon_readl(AMAZON_MCD_CHIPID) & 0xFFFFF000; - return cpu_ver; -} - -static inline u32 amazon_get_counter_resolution(void) -{ - u32 res; - __asm__ __volatile__( - ".set push\n" - ".set mips32r2\n" - ".set noreorder\n" - "rdhwr %0, $3\n" - "ehb\n" - ".set pop\n" - : "=&r" (res) - : /* no input */ - : "memory"); - instruction_hazard(); - return res; -} - -void __init plat_time_init(void) -{ - mips_hpt_frequency = amazon_get_cpu_hz() / amazon_get_counter_resolution(); - r4k_offset = mips_hpt_frequency / HZ; - printk("mips_hpt_frequency:%d\n", mips_hpt_frequency); - printk("r4k_offset: %08x(%d)\n", r4k_offset, r4k_offset); - - r4k_cur = (read_c0_count() + r4k_offset); - write_c0_compare(r4k_cur); - - /* enable the timer in the PMU */ - amazon_writel(amazon_readl(AMAZON_PMU_PWDCR)| AMAZON_PMU_PWDCR_GPT|AMAZON_PMU_PWDCR_FPI, AMAZON_PMU_PWDCR); - - /* setup the GPTU for timer tick f_fpi == f_gptu*/ - amazon_writel(0x0100, AMAZON_GPTU_CLC); - amazon_writel(0xffff, AMAZON_GPTU_CAPREL); - amazon_writel(0x80C0, AMAZON_GPTU_T6CON); -} - -void __init plat_mem_setup(void) -{ - u32 chipid = 0; - u32 part_no = 0; - - chipid = amazon_readl(AMAZON_MCD_CHIPID); - part_no = AMAZON_MCD_CHIPID_PART_NUMBER_GET(chipid); - - if(part_no == AMAZON_CHIPID_YANGTSE){ - printk("Yangtse Version\n"); - } else if (part_no == AMAZON_CHIPID_STANDARD) { - printk(SYSTEM_MODEL_NAME "\n"); - } else { - printk("unknown version %8x\n",part_no); - } - - amazon_reboot_setup(); - - //stop reset TPE and DFE - amazon_writel(0, AMAZON_RST_REQ); - //clock - amazon_writel(0x3fff, AMAZON_PMU_PWDCR); - //reenable trace capability - part_no = readl(AMAZON_BCU_ECON); - - ioport_resource.start = IOPORT_RESOURCE_START; - ioport_resource.end = IOPORT_RESOURCE_END; - iomem_resource.start = IOMEM_RESOURCE_START; - iomem_resource.end = IOMEM_RESOURCE_END; -} - -static void amazon_machine_restart(char *command) -{ - local_irq_disable(); - amazon_writel(AMAZON_RST_ALL, AMAZON_RST_REQ); - for (;;) ; -} - -static void amazon_machine_halt(void) -{ - printk(KERN_NOTICE "System halted.\n"); - local_irq_disable(); - for (;;) ; -} - -static void amazon_machine_power_off(void) -{ - printk(KERN_NOTICE "Please turn off the power now.\n"); - local_irq_disable(); - for (;;) ; -} - -static void amazon_reboot_setup(void) -{ - _machine_restart = amazon_machine_restart; - _machine_halt = amazon_machine_halt; - pm_power_off = amazon_machine_power_off; -} |