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Diffstat (limited to 'arch/mips/netlogic/xlp/setup.c')
| -rw-r--r-- | arch/mips/netlogic/xlp/setup.c | 179 |
1 files changed, 179 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c new file mode 100644 index 000000000..9adc0c1b4 --- /dev/null +++ b/arch/mips/netlogic/xlp/setup.c @@ -0,0 +1,179 @@ +/* + * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights + * reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the NetLogic + * license below: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR + * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, + * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE + * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN + * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <linux/kernel.h> +#include <linux/of_fdt.h> +#include <linux/memblock.h> + +#include <asm/idle.h> +#include <asm/reboot.h> +#include <asm/time.h> +#include <asm/bootinfo.h> + +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/common.h> + +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/sys.h> + +uint64_t nlm_io_base; +struct nlm_soc_info nlm_nodes[NLM_NR_NODES]; +cpumask_t nlm_cpumask = CPU_MASK_CPU0; +unsigned int nlm_threads_per_core; + +static void nlm_linux_exit(void) +{ + uint64_t sysbase = nlm_get_node(0)->sysbase; + + if (cpu_is_xlp9xx()) + nlm_write_sys_reg(sysbase, SYS_9XX_CHIP_RESET, 1); + else + nlm_write_sys_reg(sysbase, SYS_CHIP_RESET, 1); + for ( ; ; ) + cpu_wait(); +} + +static void nlm_fixup_mem(void) +{ + const int pref_backup = 512; + struct memblock_region *mem; + + for_each_mem_region(mem) { + memblock_remove(mem->base + mem->size - pref_backup, + pref_backup); + } +} + +static void __init xlp_init_mem_from_bars(void) +{ + uint64_t map[16]; + int i, n; + + n = nlm_get_dram_map(-1, map, ARRAY_SIZE(map)); /* -1 : all nodes */ + for (i = 0; i < n; i += 2) { + /* exclude 0x1000_0000-0x2000_0000, u-boot device */ + if (map[i] <= 0x10000000 && map[i+1] > 0x10000000) + map[i+1] = 0x10000000; + if (map[i] > 0x10000000 && map[i] < 0x20000000) + map[i] = 0x20000000; + + memblock_add(map[i], map[i+1] - map[i]); + } +} + +void __init plat_mem_setup(void) +{ +#ifdef CONFIG_SMP + nlm_wakeup_secondary_cpus(); + + /* update TLB size after waking up threads */ + current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; + + register_smp_ops(&nlm_smp_ops); +#endif + _machine_restart = (void (*)(char *))nlm_linux_exit; + _machine_halt = nlm_linux_exit; + pm_power_off = nlm_linux_exit; + + /* memory and bootargs from DT */ + xlp_early_init_devtree(); + + if (memblock_end_of_DRAM() == 0) { + pr_info("Using DRAM BARs for memory map.\n"); + xlp_init_mem_from_bars(); + } + /* Calculate and setup wired entries for mapped kernel */ + nlm_fixup_mem(); +} + +const char *get_system_type(void) +{ + switch (read_c0_prid() & PRID_IMP_MASK) { + case PRID_IMP_NETLOGIC_XLP9XX: + case PRID_IMP_NETLOGIC_XLP5XX: + case PRID_IMP_NETLOGIC_XLP2XX: + return "Broadcom XLPII Series"; + default: + return "Netlogic XLP Series"; + } +} + +void __init prom_free_prom_memory(void) +{ + /* Nothing yet */ +} + +void xlp_mmu_init(void) +{ + u32 conf4; + + if (cpu_is_xlpii()) { + /* XLPII series has extended pagesize in config 4 */ + conf4 = read_c0_config4() & ~0x1f00u; + write_c0_config4(conf4 | ((PAGE_SHIFT - 10) / 2 << 8)); + } else { + /* enable extended TLB and Large Fixed TLB */ + write_c0_config6(read_c0_config6() | 0x24); + + /* set page mask of extended Fixed TLB in config7 */ + write_c0_config7(PM_DEFAULT_MASK >> + (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2))); + } +} + +void nlm_percpu_init(int hwcpuid) +{ +} + +void __init prom_init(void) +{ + void *reset_vec; + + nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE); + nlm_init_boot_cpu(); + xlp_mmu_init(); + nlm_node_init(0); + xlp_dt_init((void *)(long)fw_arg0); + + /* Update reset entry point with CPU init code */ + reset_vec = (void *)CKSEG1ADDR(RESET_VEC_PHYS); + memset(reset_vec, 0, RESET_VEC_SIZE); + memcpy(reset_vec, (void *)nlm_reset_entry, + (nlm_reset_entry_end - nlm_reset_entry)); + +#ifdef CONFIG_SMP + cpumask_setall(&nlm_cpumask); +#endif +} |