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Diffstat (limited to 'arch/mips/netlogic/xlr/setup.c')
| -rw-r--r-- | arch/mips/netlogic/xlr/setup.c | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlr/setup.c b/arch/mips/netlogic/xlr/setup.c new file mode 100644 index 000000000000..482802569e74 --- /dev/null +++ b/arch/mips/netlogic/xlr/setup.c @@ -0,0 +1,188 @@ +/* + * 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/serial_8250.h> +#include <linux/pm.h> + +#include <asm/reboot.h> +#include <asm/time.h> +#include <asm/bootinfo.h> +#include <asm/smp-ops.h> + +#include <asm/netlogic/interrupt.h> +#include <asm/netlogic/psb-bootinfo.h> + +#include <asm/netlogic/xlr/xlr.h> +#include <asm/netlogic/xlr/iomap.h> +#include <asm/netlogic/xlr/pic.h> +#include <asm/netlogic/xlr/gpio.h> + +unsigned long netlogic_io_base = (unsigned long)(DEFAULT_NETLOGIC_IO_BASE); +unsigned long nlm_common_ebase = 0x0; +struct psb_info nlm_prom_info; + +static void nlm_early_serial_setup(void) +{ + struct uart_port s; + nlm_reg_t *uart_base; + + uart_base = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET); + memset(&s, 0, sizeof(s)); + s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST; + s.iotype = UPIO_MEM32; + s.regshift = 2; + s.irq = PIC_UART_0_IRQ; + s.uartclk = PIC_CLKS_PER_SEC; + s.serial_in = nlm_xlr_uart_in; + s.serial_out = nlm_xlr_uart_out; + s.mapbase = (unsigned long)uart_base; + s.membase = (unsigned char __iomem *)uart_base; + early_serial_setup(&s); +} + +static void nlm_linux_exit(void) +{ + nlm_reg_t *mmio; + + mmio = netlogic_io_mmio(NETLOGIC_IO_GPIO_OFFSET); + /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */ + netlogic_write_reg(mmio, NETLOGIC_GPIO_SWRESET_REG, 1); + for ( ; ; ) + cpu_wait(); +} + +void __init plat_mem_setup(void) +{ + panic_timeout = 5; + _machine_restart = (void (*)(char *))nlm_linux_exit; + _machine_halt = nlm_linux_exit; + pm_power_off = nlm_linux_exit; +} + +const char *get_system_type(void) +{ + return "Netlogic XLR/XLS Series"; +} + +void __init prom_free_prom_memory(void) +{ + /* Nothing yet */ +} + +static void build_arcs_cmdline(int *argv) +{ + int i, remain, len; + char *arg; + + remain = sizeof(arcs_cmdline) - 1; + arcs_cmdline[0] = '\0'; + for (i = 0; argv[i] != 0; i++) { + arg = (char *)(long)argv[i]; + len = strlen(arg); + if (len + 1 > remain) + break; + strcat(arcs_cmdline, arg); + strcat(arcs_cmdline, " "); + remain -= len + 1; + } + + /* Add the default options here */ + if ((strstr(arcs_cmdline, "console=")) == NULL) { + arg = "console=ttyS0,38400 "; + len = strlen(arg); + if (len > remain) + goto fail; + strcat(arcs_cmdline, arg); + remain -= len; + } +#ifdef CONFIG_BLK_DEV_INITRD + if ((strstr(arcs_cmdline, "rdinit=")) == NULL) { + arg = "rdinit=/sbin/init "; + len = strlen(arg); + if (len > remain) + goto fail; + strcat(arcs_cmdline, arg); + remain -= len; + } +#endif + return; +fail: + panic("Cannot add %s, command line too big!", arg); +} + +static void prom_add_memory(void) +{ + struct nlm_boot_mem_map *bootm; + u64 start, size; + u64 pref_backup = 512; /* avoid pref walking beyond end */ + int i; + + bootm = (void *)(long)nlm_prom_info.psb_mem_map; + for (i = 0; i < bootm->nr_map; i++) { + if (bootm->map[i].type != BOOT_MEM_RAM) + continue; + start = bootm->map[i].addr; + size = bootm->map[i].size; + + /* Work around for using bootloader mem */ + if (i == 0 && start == 0 && size == 0x0c000000) + size = 0x0ff00000; + + add_memory_region(start, size - pref_backup, BOOT_MEM_RAM); + } +} + +void __init prom_init(void) +{ + int *argv, *envp; /* passed as 32 bit ptrs */ + struct psb_info *prom_infop; + + /* truncate to 32 bit and sign extend all args */ + argv = (int *)(long)(int)fw_arg1; + envp = (int *)(long)(int)fw_arg2; + prom_infop = (struct psb_info *)(long)(int)fw_arg3; + + nlm_prom_info = *prom_infop; + + nlm_early_serial_setup(); + build_arcs_cmdline(argv); + nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1)); + prom_add_memory(); + +#ifdef CONFIG_SMP + nlm_wakeup_secondary_cpus(nlm_prom_info.online_cpu_map); + register_smp_ops(&nlm_smp_ops); +#endif +} |