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210 lines
5.5 KiB
210 lines
5.5 KiB
/*
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* Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
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* reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the NetLogic
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* license below:
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <linux/kernel.h>
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#include <linux/serial_8250.h>
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#include <linux/pm.h>
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#include <asm/idle.h>
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#include <asm/reboot.h>
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#include <asm/time.h>
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#include <asm/bootinfo.h>
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#include <asm/netlogic/interrupt.h>
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#include <asm/netlogic/psb-bootinfo.h>
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#include <asm/netlogic/haldefs.h>
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#include <asm/netlogic/common.h>
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#include <asm/netlogic/xlr/xlr.h>
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#include <asm/netlogic/xlr/iomap.h>
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#include <asm/netlogic/xlr/pic.h>
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#include <asm/netlogic/xlr/gpio.h>
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#include <asm/netlogic/xlr/fmn.h>
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uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE;
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struct psb_info nlm_prom_info;
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/* default to uniprocessor */
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unsigned int nlm_threads_per_core = 1;
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struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
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cpumask_t nlm_cpumask = CPU_MASK_CPU0;
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static void nlm_linux_exit(void)
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{
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uint64_t gpiobase;
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gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET);
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/* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
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nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1);
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for ( ; ; )
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cpu_wait();
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}
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void __init plat_mem_setup(void)
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{
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_machine_restart = (void (*)(char *))nlm_linux_exit;
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_machine_halt = nlm_linux_exit;
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pm_power_off = nlm_linux_exit;
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}
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const char *get_system_type(void)
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{
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return "Netlogic XLR/XLS Series";
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}
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unsigned int nlm_get_cpu_frequency(void)
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{
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return (unsigned int)nlm_prom_info.cpu_frequency;
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}
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void __init prom_free_prom_memory(void)
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{
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/* Nothing yet */
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}
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void nlm_percpu_init(int hwcpuid)
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{
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if (hwcpuid % 4 == 0)
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xlr_percpu_fmn_init();
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}
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static void __init build_arcs_cmdline(int *argv)
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{
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int i, remain, len;
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char *arg;
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remain = sizeof(arcs_cmdline) - 1;
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arcs_cmdline[0] = '\0';
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for (i = 0; argv[i] != 0; i++) {
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arg = (char *)(long)argv[i];
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len = strlen(arg);
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if (len + 1 > remain)
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break;
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strcat(arcs_cmdline, arg);
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strcat(arcs_cmdline, " ");
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remain -= len + 1;
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}
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/* Add the default options here */
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if ((strstr(arcs_cmdline, "console=")) == NULL) {
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arg = "console=ttyS0,38400 ";
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len = strlen(arg);
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if (len > remain)
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goto fail;
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strcat(arcs_cmdline, arg);
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remain -= len;
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}
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#ifdef CONFIG_BLK_DEV_INITRD
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if ((strstr(arcs_cmdline, "rdinit=")) == NULL) {
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arg = "rdinit=/sbin/init ";
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len = strlen(arg);
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if (len > remain)
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goto fail;
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strcat(arcs_cmdline, arg);
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remain -= len;
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}
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#endif
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return;
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fail:
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panic("Cannot add %s, command line too big!", arg);
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}
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static void prom_add_memory(void)
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{
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struct nlm_boot_mem_map *bootm;
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u64 start, size;
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u64 pref_backup = 512; /* avoid pref walking beyond end */
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int i;
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bootm = (void *)(long)nlm_prom_info.psb_mem_map;
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for (i = 0; i < bootm->nr_map; i++) {
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if (bootm->map[i].type != BOOT_MEM_RAM)
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continue;
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start = bootm->map[i].addr;
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size = bootm->map[i].size;
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/* Work around for using bootloader mem */
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if (i == 0 && start == 0 && size == 0x0c000000)
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size = 0x0ff00000;
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add_memory_region(start, size - pref_backup, BOOT_MEM_RAM);
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}
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}
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static void nlm_init_node(void)
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{
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struct nlm_soc_info *nodep;
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nodep = nlm_current_node();
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nodep->picbase = nlm_mmio_base(NETLOGIC_IO_PIC_OFFSET);
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nodep->ebase = read_c0_ebase() & MIPS_EBASE_BASE;
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spin_lock_init(&nodep->piclock);
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}
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void __init prom_init(void)
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{
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int *argv, *envp; /* passed as 32 bit ptrs */
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struct psb_info *prom_infop;
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void *reset_vec;
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#ifdef CONFIG_SMP
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int i;
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#endif
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/* truncate to 32 bit and sign extend all args */
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argv = (int *)(long)(int)fw_arg1;
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envp = (int *)(long)(int)fw_arg2;
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prom_infop = (struct psb_info *)(long)(int)fw_arg3;
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nlm_prom_info = *prom_infop;
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nlm_init_node();
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/* Update reset entry point with CPU init code */
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reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS);
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memset(reset_vec, 0, RESET_VEC_SIZE);
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memcpy(reset_vec, (void *)nlm_reset_entry,
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(nlm_reset_entry_end - nlm_reset_entry));
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build_arcs_cmdline(argv);
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prom_add_memory();
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#ifdef CONFIG_SMP
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for (i = 0; i < 32; i++)
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if (nlm_prom_info.online_cpu_map & (1 << i))
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cpumask_set_cpu(i, &nlm_cpumask);
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nlm_wakeup_secondary_cpus();
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register_smp_ops(&nlm_smp_ops);
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#endif
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xlr_board_info_setup();
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xlr_percpu_fmn_init();
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}
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