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/*
* 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/idle.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/bootinfo.h>
#include <asm/netlogic/interrupt.h>
#include <asm/netlogic/psb-bootinfo.h>
#include <asm/netlogic/haldefs.h>
#include <asm/netlogic/common.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>
#include <asm/netlogic/xlr/fmn.h>
uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE;
struct psb_info nlm_prom_info;
/* default to uniprocessor */
unsigned int nlm_threads_per_core = 1;
struct nlm_soc_info nlm_nodes[NLM_NR_NODES];
cpumask_t nlm_cpumask = CPU_MASK_CPU0;
static void __init nlm_early_serial_setup(void)
{
struct uart_port s;
unsigned long uart_base;
uart_base = (unsigned long)nlm_mmio_base(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_CLK_HZ;
s.serial_in = nlm_xlr_uart_in;
s.serial_out = nlm_xlr_uart_out;
s.mapbase = uart_base;
s.membase = (unsigned char __iomem *)uart_base;
early_serial_setup(&s);
}
static void nlm_linux_exit(void)
{
uint64_t gpiobase;
gpiobase = nlm_mmio_base(NETLOGIC_IO_GPIO_OFFSET);
/* trigger a chip reset by writing 1 to GPIO_SWRESET_REG */
nlm_write_reg(gpiobase, GPIO_SWRESET_REG, 1);
for ( ; ; )
cpu_wait();
}
void __init plat_mem_setup(void)
{
_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";
}
unsigned int nlm_get_cpu_frequency(void)
{
return (unsigned int)nlm_prom_info.cpu_frequency;
}
void __init prom_free_prom_memory(void)
{
/* Nothing yet */
}
void nlm_percpu_init(int hwcpuid)
{
if (hwcpuid % 4 == 0)
xlr_percpu_fmn_init();
}
static void __init 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);
}
}
static void nlm_init_node(void)
{
struct nlm_soc_info *nodep;
nodep = nlm_current_node();
nodep->picbase = nlm_mmio_base(NETLOGIC_IO_PIC_OFFSET);
nodep->ebase = read_c0_ebase() & (~((1 << 12) - 1));
spin_lock_init(&nodep->piclock);
}
void __init prom_init(void)
{
int *argv, *envp; /* passed as 32 bit ptrs */
struct psb_info *prom_infop;
void *reset_vec;
#ifdef CONFIG_SMP
int i;
#endif
/* 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_init_node();
/* 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));
nlm_early_serial_setup();
build_arcs_cmdline(argv);
prom_add_memory();
#ifdef CONFIG_SMP
for (i = 0; i < 32; i++)
if (nlm_prom_info.online_cpu_map & (1 << i))
cpumask_set_cpu(i, &nlm_cpumask);
nlm_wakeup_secondary_cpus();
register_smp_ops(&nlm_smp_ops);
#endif
xlr_board_info_setup();
xlr_percpu_fmn_init();
}
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