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
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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
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22 * THIS SOFTWARE IS PROVIDED BY NETLOGIC ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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25 * ARE DISCLAIMED. IN NO EVENT SHALL NETLOGIC OR CONTRIBUTORS BE LIABLE
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35 #include <linux/kernel.h>
36 #include <linux/serial_8250.h>
39 #include <asm/reboot.h>
41 #include <asm/bootinfo.h>
43 #include <asm/netlogic/interrupt.h>
44 #include <asm/netlogic/psb-bootinfo.h>
45 #include <asm/netlogic/haldefs.h>
46 #include <asm/netlogic/common.h>
48 #include <asm/netlogic/xlr/xlr.h>
49 #include <asm/netlogic/xlr/iomap.h>
50 #include <asm/netlogic/xlr/pic.h>
51 #include <asm/netlogic/xlr/gpio.h>
52 #include <asm/netlogic/xlr/fmn.h>
54 uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE;
55 struct psb_info nlm_prom_info;
57 /* default to uniprocessor */
58 unsigned int nlm_threads_per_core = 1;
59 struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
60 cpumask_t nlm_cpumask = CPU_MASK_CPU0;
62 static void __init nlm_early_serial_setup(void)
65 unsigned long uart_base;
67 uart_base = (unsigned long)nlm_mmio_base(NETLOGIC_IO_UART_0_OFFSET);
68 memset(&s, 0, sizeof(s));
69 s.flags = ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST;
70 s.iotype = UPIO_MEM32;
72 s.irq = PIC_UART_0_IRQ;
73 s.uartclk = PIC_CLKS_PER_SEC;
74 s.serial_in = nlm_xlr_uart_in;
75 s.serial_out = nlm_xlr_uart_out;
76 s.mapbase = uart_base;
77 s.membase = (unsigned char __iomem *)uart_base;
78 early_serial_setup(&s);
81 static void nlm_linux_exit(void)
85 gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET);
86 /* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
87 nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1);
92 void __init plat_mem_setup(void)
95 _machine_restart = (void (*)(char *))nlm_linux_exit;
96 _machine_halt = nlm_linux_exit;
97 pm_power_off = nlm_linux_exit;
100 const char *get_system_type(void)
102 return "Netlogic XLR/XLS Series";
105 unsigned int nlm_get_cpu_frequency(void)
107 return (unsigned int)nlm_prom_info.cpu_frequency;
110 void __init prom_free_prom_memory(void)
115 void nlm_percpu_init(int hwcpuid)
117 if (hwcpuid % 4 == 0)
118 xlr_percpu_fmn_init();
121 static void __init build_arcs_cmdline(int *argv)
126 remain = sizeof(arcs_cmdline) - 1;
127 arcs_cmdline[0] = '\0';
128 for (i = 0; argv[i] != 0; i++) {
129 arg = (char *)(long)argv[i];
131 if (len + 1 > remain)
133 strcat(arcs_cmdline, arg);
134 strcat(arcs_cmdline, " ");
138 /* Add the default options here */
139 if ((strstr(arcs_cmdline, "console=")) == NULL) {
140 arg = "console=ttyS0,38400 ";
144 strcat(arcs_cmdline, arg);
147 #ifdef CONFIG_BLK_DEV_INITRD
148 if ((strstr(arcs_cmdline, "rdinit=")) == NULL) {
149 arg = "rdinit=/sbin/init ";
153 strcat(arcs_cmdline, arg);
159 panic("Cannot add %s, command line too big!", arg);
162 static void prom_add_memory(void)
164 struct nlm_boot_mem_map *bootm;
166 u64 pref_backup = 512; /* avoid pref walking beyond end */
169 bootm = (void *)(long)nlm_prom_info.psb_mem_map;
170 for (i = 0; i < bootm->nr_map; i++) {
171 if (bootm->map[i].type != BOOT_MEM_RAM)
173 start = bootm->map[i].addr;
174 size = bootm->map[i].size;
176 /* Work around for using bootloader mem */
177 if (i == 0 && start == 0 && size == 0x0c000000)
180 add_memory_region(start, size - pref_backup, BOOT_MEM_RAM);
184 static void nlm_init_node(void)
186 struct nlm_soc_info *nodep;
188 nodep = nlm_current_node();
189 nodep->picbase = nlm_mmio_base(NETLOGIC_IO_PIC_OFFSET);
190 nodep->ebase = read_c0_ebase() & (~((1 << 12) - 1));
191 spin_lock_init(&nodep->piclock);
194 void __init prom_init(void)
196 int i, *argv, *envp; /* passed as 32 bit ptrs */
197 struct psb_info *prom_infop;
199 /* truncate to 32 bit and sign extend all args */
200 argv = (int *)(long)(int)fw_arg1;
201 envp = (int *)(long)(int)fw_arg2;
202 prom_infop = (struct psb_info *)(long)(int)fw_arg3;
204 nlm_prom_info = *prom_infop;
207 nlm_early_serial_setup();
208 build_arcs_cmdline(argv);
212 for (i = 0; i < 32; i++)
213 if (nlm_prom_info.online_cpu_map & (1 << i))
214 cpumask_set_cpu(i, &nlm_cpumask);
215 nlm_wakeup_secondary_cpus();
216 register_smp_ops(&nlm_smp_ops);
218 xlr_board_info_setup();
219 xlr_percpu_fmn_init();