2 * Copyright 2003-2011 NetLogic Microsystems, Inc. (NetLogic). All rights
5 * This software is available to you under a choice of one of two
6 * licenses. You may choose to be licensed under the terms of the GNU
7 * General Public License (GPL) Version 2, available from the file
8 * COPYING in the main directory of this source tree, or the NetLogic
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in
19 * the documentation and/or other materials provided with the
22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
24 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
29 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
30 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
31 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
32 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 #include <linux/kernel.h>
36 #include <linux/serial_8250.h>
39 #include <asm/reboot.h>
41 #include <asm/bootinfo.h>
42 #include <asm/smp-ops.h>
44 #include <asm/netlogic/interrupt.h>
45 #include <asm/netlogic/psb-bootinfo.h>
47 #include <asm/netlogic/xlr/xlr.h>
48 #include <asm/netlogic/xlr/iomap.h>
49 #include <asm/netlogic/xlr/pic.h>
50 #include <asm/netlogic/xlr/gpio.h>
52 unsigned long netlogic_io_base = (unsigned long)(DEFAULT_NETLOGIC_IO_BASE);
53 unsigned long nlm_common_ebase = 0x0;
54 struct psb_info nlm_prom_info;
56 static void nlm_early_serial_setup(void)
61 uart_base = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
62 memset(&s, 0, sizeof(s));
63 s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
64 s.iotype = UPIO_MEM32;
66 s.irq = PIC_UART_0_IRQ;
67 s.uartclk = PIC_CLKS_PER_SEC;
68 s.serial_in = nlm_xlr_uart_in;
69 s.serial_out = nlm_xlr_uart_out;
70 s.mapbase = (unsigned long)uart_base;
71 s.membase = (unsigned char __iomem *)uart_base;
72 early_serial_setup(&s);
75 static void nlm_linux_exit(void)
79 mmio = netlogic_io_mmio(NETLOGIC_IO_GPIO_OFFSET);
80 /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
81 netlogic_write_reg(mmio, NETLOGIC_GPIO_SWRESET_REG, 1);
86 void __init plat_mem_setup(void)
89 _machine_restart = (void (*)(char *))nlm_linux_exit;
90 _machine_halt = nlm_linux_exit;
91 pm_power_off = nlm_linux_exit;
94 const char *get_system_type(void)
96 return "Netlogic XLR/XLS Series";
99 void __init prom_free_prom_memory(void)
104 static void build_arcs_cmdline(int *argv)
109 remain = sizeof(arcs_cmdline) - 1;
110 arcs_cmdline[0] = '\0';
111 for (i = 0; argv[i] != 0; i++) {
112 arg = (char *)(long)argv[i];
114 if (len + 1 > remain)
116 strcat(arcs_cmdline, arg);
117 strcat(arcs_cmdline, " ");
121 /* Add the default options here */
122 if ((strstr(arcs_cmdline, "console=")) == NULL) {
123 arg = "console=ttyS0,38400 ";
127 strcat(arcs_cmdline, arg);
130 #ifdef CONFIG_BLK_DEV_INITRD
131 if ((strstr(arcs_cmdline, "rdinit=")) == NULL) {
132 arg = "rdinit=/sbin/init ";
136 strcat(arcs_cmdline, arg);
142 panic("Cannot add %s, command line too big!", arg);
145 static void prom_add_memory(void)
147 struct nlm_boot_mem_map *bootm;
149 u64 pref_backup = 512; /* avoid pref walking beyond end */
152 bootm = (void *)(long)nlm_prom_info.psb_mem_map;
153 for (i = 0; i < bootm->nr_map; i++) {
154 if (bootm->map[i].type != BOOT_MEM_RAM)
156 start = bootm->map[i].addr;
157 size = bootm->map[i].size;
159 /* Work around for using bootloader mem */
160 if (i == 0 && start == 0 && size == 0x0c000000)
163 add_memory_region(start, size - pref_backup, BOOT_MEM_RAM);
167 void __init prom_init(void)
169 int *argv, *envp; /* passed as 32 bit ptrs */
170 struct psb_info *prom_infop;
172 /* truncate to 32 bit and sign extend all args */
173 argv = (int *)(long)(int)fw_arg1;
174 envp = (int *)(long)(int)fw_arg2;
175 prom_infop = (struct psb_info *)(long)(int)fw_arg3;
177 nlm_prom_info = *prom_infop;
179 nlm_early_serial_setup();
180 build_arcs_cmdline(argv);
181 nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1));
185 nlm_wakeup_secondary_cpus(nlm_prom_info.online_cpu_map);
186 register_smp_ops(&nlm_smp_ops);