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authorJayachandran C <jayachandranc@netlogicmicro.com>2011-05-07 01:36:40 +0530
committerRalf Baechle <ralf@linux-mips.org>2011-05-19 09:55:40 +0100
commit5c642506740ecbf20fb7a9e482287e4e5c639e5c (patch)
tree1bf19bc57f06db54add1d2b4499b0f141919f9f7 /arch/mips/netlogic
parentefa0f81c11021c95b1e72c65868115b6fb4ecc6a (diff)
downloadvexpress-lsk-5c642506740ecbf20fb7a9e482287e4e5c639e5c.tar.gz
MIPS: Platform files for XLR/XLS processor support
* include/asm/netlogic added with files common for all Netlogic processors (common with XLP which will be added later) * include/asm/netlogic/xlr for XLR/XLS chip specific files * netlogic/xlr for XLR/XLS platform files Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com> To: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2334/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/netlogic')
-rw-r--r--arch/mips/netlogic/xlr/irq.c216
-rw-r--r--arch/mips/netlogic/xlr/platform.c98
-rw-r--r--arch/mips/netlogic/xlr/setup.c188
-rw-r--r--arch/mips/netlogic/xlr/smp.c225
-rw-r--r--arch/mips/netlogic/xlr/smpboot.S94
-rw-r--r--arch/mips/netlogic/xlr/time.c51
-rw-r--r--arch/mips/netlogic/xlr/xlr_console.c46
7 files changed, 918 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlr/irq.c b/arch/mips/netlogic/xlr/irq.c
new file mode 100644
index 00000000000..2033f5656f6
--- /dev/null
+++ b/arch/mips/netlogic/xlr/irq.c
@@ -0,0 +1,216 @@
+/*
+ * 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/init.h>
+#include <linux/linkage.h>
+#include <linux/interrupt.h>
+#include <linux/spinlock.h>
+#include <linux/mm.h>
+
+#include <asm/mipsregs.h>
+
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
+
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/mips-extns.h>
+
+static u64 nlm_irq_mask;
+static DEFINE_SPINLOCK(nlm_pic_lock);
+
+static void xlr_pic_enable(struct irq_data *d)
+{
+ nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+ unsigned long flags;
+ nlm_reg_t reg;
+ int irq = d->irq;
+
+ WARN(!PIC_IRQ_IS_IRT(irq), "Bad irq %d", irq);
+
+ spin_lock_irqsave(&nlm_pic_lock, flags);
+ reg = netlogic_read_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE);
+ netlogic_write_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE,
+ reg | (1 << 6) | (1 << 30) | (1 << 31));
+ spin_unlock_irqrestore(&nlm_pic_lock, flags);
+}
+
+static void xlr_pic_mask(struct irq_data *d)
+{
+ nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+ unsigned long flags;
+ nlm_reg_t reg;
+ int irq = d->irq;
+
+ WARN(!PIC_IRQ_IS_IRT(irq), "Bad irq %d", irq);
+
+ spin_lock_irqsave(&nlm_pic_lock, flags);
+ reg = netlogic_read_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE);
+ netlogic_write_reg(mmio, PIC_IRT_1_BASE + irq - PIC_IRQ_BASE,
+ reg | (1 << 6) | (1 << 30) | (0 << 31));
+ spin_unlock_irqrestore(&nlm_pic_lock, flags);
+}
+
+static void xlr_pic_ack(struct irq_data *d)
+{
+ unsigned long flags;
+ nlm_reg_t *mmio;
+ int irq = d->irq;
+
+ WARN(!PIC_IRQ_IS_IRT(irq), "Bad irq %d", irq);
+
+ mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+ spin_lock_irqsave(&nlm_pic_lock, flags);
+ netlogic_write_reg(mmio, PIC_INT_ACK, (1 << (irq - PIC_IRQ_BASE)));
+ spin_unlock_irqrestore(&nlm_pic_lock, flags);
+}
+
+/*
+ * This chip definition handles interrupts routed thru the XLR
+ * hardware PIC, currently IRQs 8-39 are mapped to hardware intr
+ * 0-31 wired the XLR PIC
+ */
+static struct irq_chip xlr_pic = {
+ .name = "XLR-PIC",
+ .irq_enable = xlr_pic_enable,
+ .irq_mask = xlr_pic_mask,
+ .irq_ack = xlr_pic_ack,
+};
+
+static void rsvd_irq_handler(struct irq_data *d)
+{
+ WARN(d->irq >= PIC_IRQ_BASE, "Bad irq %d", d->irq);
+}
+
+/*
+ * Chip definition for CPU originated interrupts(timer, msg) and
+ * IPIs
+ */
+struct irq_chip nlm_cpu_intr = {
+ .name = "XLR-CPU-INTR",
+ .irq_enable = rsvd_irq_handler,
+ .irq_mask = rsvd_irq_handler,
+ .irq_ack = rsvd_irq_handler,
+};
+
+void __init init_xlr_irqs(void)
+{
+ nlm_reg_t *mmio = netlogic_io_mmio(NETLOGIC_IO_PIC_OFFSET);
+ uint32_t thread_mask = 1;
+ int level, i;
+
+ pr_info("Interrupt thread mask [%x]\n", thread_mask);
+ for (i = 0; i < PIC_NUM_IRTS; i++) {
+ level = PIC_IRQ_IS_EDGE_TRIGGERED(i);
+
+ /* Bind all PIC irqs to boot cpu */
+ netlogic_write_reg(mmio, PIC_IRT_0_BASE + i, thread_mask);
+
+ /*
+ * Use local scheduling and high polarity for all IRTs
+ * Invalidate all IRTs, by default
+ */
+ netlogic_write_reg(mmio, PIC_IRT_1_BASE + i,
+ (level << 30) | (1 << 6) | (PIC_IRQ_BASE + i));
+ }
+
+ /* Make all IRQs as level triggered by default */
+ for (i = 0; i < NR_IRQS; i++) {
+ if (PIC_IRQ_IS_IRT(i))
+ irq_set_chip_and_handler(i, &xlr_pic, handle_level_irq);
+ else
+ irq_set_chip_and_handler(i, &nlm_cpu_intr,
+ handle_level_irq);
+ }
+#ifdef CONFIG_SMP
+ irq_set_chip_and_handler(IRQ_IPI_SMP_FUNCTION, &nlm_cpu_intr,
+ nlm_smp_function_ipi_handler);
+ irq_set_chip_and_handler(IRQ_IPI_SMP_RESCHEDULE, &nlm_cpu_intr,
+ nlm_smp_resched_ipi_handler);
+ nlm_irq_mask |=
+ ((1ULL << IRQ_IPI_SMP_FUNCTION) | (1ULL << IRQ_IPI_SMP_RESCHEDULE));
+#endif
+ /* unmask all PIC related interrupts. If no handler is installed by the
+ * drivers, it'll just ack the interrupt and return
+ */
+ for (i = PIC_IRT_FIRST_IRQ; i <= PIC_IRT_LAST_IRQ; i++)
+ nlm_irq_mask |= (1ULL << i);
+
+ nlm_irq_mask |= (1ULL << IRQ_TIMER);
+}
+
+void __init arch_init_irq(void)
+{
+ /* Initialize the irq descriptors */
+ init_xlr_irqs();
+ write_c0_eimr(nlm_irq_mask);
+}
+
+void __cpuinit nlm_smp_irq_init(void)
+{
+ /* set interrupt mask for non-zero cpus */
+ write_c0_eimr(nlm_irq_mask);
+}
+
+asmlinkage void plat_irq_dispatch(void)
+{
+ uint64_t eirr;
+ int i;
+
+ eirr = read_c0_eirr() & read_c0_eimr();
+ if (!eirr)
+ return;
+
+ /* no need of EIRR here, writing compare clears interrupt */
+ if (eirr & (1 << IRQ_TIMER)) {
+ do_IRQ(IRQ_TIMER);
+ return;
+ }
+
+ /* TODO use dcltz: optimize below code */
+ for (i = 63; i != -1; i--) {
+ if (eirr & (1ULL << i))
+ break;
+ }
+ if (i == -1) {
+ pr_err("no interrupt !!\n");
+ return;
+ }
+
+ /* Ack eirr */
+ write_c0_eirr(1ULL << i);
+
+ do_IRQ(i);
+}
diff --git a/arch/mips/netlogic/xlr/platform.c b/arch/mips/netlogic/xlr/platform.c
new file mode 100644
index 00000000000..609ec253464
--- /dev/null
+++ b/arch/mips/netlogic/xlr/platform.c
@@ -0,0 +1,98 @@
+/*
+ * Copyright 2011, Netlogic Microsystems.
+ * Copyright 2004, Matt Porter <mporter@kernel.crashing.org>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/device.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/resource.h>
+#include <linux/serial_8250.h>
+#include <linux/serial_reg.h>
+
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
+
+unsigned int nlm_xlr_uart_in(struct uart_port *p, int offset)
+{
+ nlm_reg_t *mmio;
+ unsigned int value;
+
+ /* XLR uart does not need any mapping of regs */
+ mmio = (nlm_reg_t *)(p->membase + (offset << p->regshift));
+ value = netlogic_read_reg(mmio, 0);
+
+ /* See XLR/XLS errata */
+ if (offset == UART_MSR)
+ value ^= 0xF0;
+ else if (offset == UART_MCR)
+ value ^= 0x3;
+
+ return value;
+}
+
+void nlm_xlr_uart_out(struct uart_port *p, int offset, int value)
+{
+ nlm_reg_t *mmio;
+
+ /* XLR uart does not need any mapping of regs */
+ mmio = (nlm_reg_t *)(p->membase + (offset << p->regshift));
+
+ /* See XLR/XLS errata */
+ if (offset == UART_MSR)
+ value ^= 0xF0;
+ else if (offset == UART_MCR)
+ value ^= 0x3;
+
+ netlogic_write_reg(mmio, 0, value);
+}
+
+#define PORT(_irq) \
+ { \
+ .irq = _irq, \
+ .regshift = 2, \
+ .iotype = UPIO_MEM32, \
+ .flags = (UPF_SKIP_TEST | \
+ UPF_FIXED_TYPE | UPF_BOOT_AUTOCONF),\
+ .uartclk = PIC_CLKS_PER_SEC, \
+ .type = PORT_16550A, \
+ .serial_in = nlm_xlr_uart_in, \
+ .serial_out = nlm_xlr_uart_out, \
+ }
+
+static struct plat_serial8250_port xlr_uart_data[] = {
+ PORT(PIC_UART_0_IRQ),
+ PORT(PIC_UART_1_IRQ),
+ {},
+};
+
+static struct platform_device uart_device = {
+ .name = "serial8250",
+ .id = PLAT8250_DEV_PLATFORM,
+ .dev = {
+ .platform_data = xlr_uart_data,
+ },
+};
+
+static int __init nlm_uart_init(void)
+{
+ nlm_reg_t *mmio;
+
+ mmio = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
+ xlr_uart_data[0].membase = (void __iomem *)mmio;
+ xlr_uart_data[0].mapbase = CPHYSADDR((unsigned long)mmio);
+
+ mmio = netlogic_io_mmio(NETLOGIC_IO_UART_1_OFFSET);
+ xlr_uart_data[1].membase = (void __iomem *)mmio;
+ xlr_uart_data[1].mapbase = CPHYSADDR((unsigned long)mmio);
+
+ return platform_device_register(&uart_device);
+}
+
+arch_initcall(nlm_uart_init);
diff --git a/arch/mips/netlogic/xlr/setup.c b/arch/mips/netlogic/xlr/setup.c
new file mode 100644
index 00000000000..482802569e7
--- /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
+}
diff --git a/arch/mips/netlogic/xlr/smp.c b/arch/mips/netlogic/xlr/smp.c
new file mode 100644
index 00000000000..b495a7f1433
--- /dev/null
+++ b/arch/mips/netlogic/xlr/smp.c
@@ -0,0 +1,225 @@
+/*
+ * 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/delay.h>
+#include <linux/init.h>
+#include <linux/smp.h>
+#include <linux/irq.h>
+
+#include <asm/mmu_context.h>
+
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/mips-extns.h>
+
+#include <asm/netlogic/xlr/iomap.h>
+#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
+
+void core_send_ipi(int logical_cpu, unsigned int action)
+{
+ int cpu = cpu_logical_map(logical_cpu);
+ u32 tid = cpu & 0x3;
+ u32 pid = (cpu >> 2) & 0x07;
+ u32 ipi = (tid << 16) | (pid << 20);
+
+ if (action & SMP_CALL_FUNCTION)
+ ipi |= IRQ_IPI_SMP_FUNCTION;
+ else if (action & SMP_RESCHEDULE_YOURSELF)
+ ipi |= IRQ_IPI_SMP_RESCHEDULE;
+ else
+ return;
+
+ pic_send_ipi(ipi);
+}
+
+void nlm_send_ipi_single(int cpu, unsigned int action)
+{
+ core_send_ipi(cpu, action);
+}
+
+void nlm_send_ipi_mask(const struct cpumask *mask, unsigned int action)
+{
+ int cpu;
+
+ for_each_cpu(cpu, mask) {
+ core_send_ipi(cpu, action);
+ }
+}
+
+/* IRQ_IPI_SMP_FUNCTION Handler */
+void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc)
+{
+ smp_call_function_interrupt();
+}
+
+/* IRQ_IPI_SMP_RESCHEDULE handler */
+void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc)
+{
+ set_need_resched();
+}
+
+void nlm_common_ipi_handler(int irq, struct pt_regs *regs)
+{
+ if (irq == IRQ_IPI_SMP_FUNCTION) {
+ smp_call_function_interrupt();
+ } else {
+ /* Announce that we are for reschduling */
+ set_need_resched();
+ }
+}
+
+/*
+ * Called before going into mips code, early cpu init
+ */
+void nlm_early_init_secondary(void)
+{
+ write_c0_ebase((uint32_t)nlm_common_ebase);
+ /* TLB partition here later */
+}
+
+/*
+ * Code to run on secondary just after probing the CPU
+ */
+static void __cpuinit nlm_init_secondary(void)
+{
+ nlm_smp_irq_init();
+}
+
+void nlm_smp_finish(void)
+{
+#ifdef notyet
+ nlm_common_msgring_cpu_init();
+#endif
+}
+
+void nlm_cpus_done(void)
+{
+}
+
+/*
+ * Boot all other cpus in the system, initialize them, and bring them into
+ * the boot function
+ */
+int nlm_cpu_unblock[NR_CPUS];
+int nlm_cpu_ready[NR_CPUS];
+unsigned long nlm_next_gp;
+unsigned long nlm_next_sp;
+cpumask_t phys_cpu_present_map;
+
+void nlm_boot_secondary(int logical_cpu, struct task_struct *idle)
+{
+ unsigned long gp = (unsigned long)task_thread_info(idle);
+ unsigned long sp = (unsigned long)__KSTK_TOS(idle);
+ int cpu = cpu_logical_map(logical_cpu);
+
+ nlm_next_sp = sp;
+ nlm_next_gp = gp;
+
+ /* barrier */
+ __sync();
+ nlm_cpu_unblock[cpu] = 1;
+}
+
+void __init nlm_smp_setup(void)
+{
+ unsigned int boot_cpu;
+ int num_cpus, i;
+
+ boot_cpu = hard_smp_processor_id();
+ cpus_clear(phys_cpu_present_map);
+
+ cpu_set(boot_cpu, phys_cpu_present_map);
+ __cpu_number_map[boot_cpu] = 0;
+ __cpu_logical_map[0] = boot_cpu;
+ cpu_set(0, cpu_possible_map);
+
+ num_cpus = 1;
+ for (i = 0; i < NR_CPUS; i++) {
+ if (nlm_cpu_ready[i]) {
+ cpu_set(i, phys_cpu_present_map);
+ __cpu_number_map[i] = num_cpus;
+ __cpu_logical_map[num_cpus] = i;
+ cpu_set(num_cpus, cpu_possible_map);
+ ++num_cpus;
+ }
+ }
+
+ pr_info("Phys CPU present map: %lx, possible map %lx\n",
+ (unsigned long)phys_cpu_present_map.bits[0],
+ (unsigned long)cpu_possible_map.bits[0]);
+
+ pr_info("Detected %i Slave CPU(s)\n", num_cpus);
+}
+
+void nlm_prepare_cpus(unsigned int max_cpus)
+{
+}
+
+struct plat_smp_ops nlm_smp_ops = {
+ .send_ipi_single = nlm_send_ipi_single,
+ .send_ipi_mask = nlm_send_ipi_mask,
+ .init_secondary = nlm_init_secondary,
+ .smp_finish = nlm_smp_finish,
+ .cpus_done = nlm_cpus_done,
+ .boot_secondary = nlm_boot_secondary,
+ .smp_setup = nlm_smp_setup,
+ .prepare_cpus = nlm_prepare_cpus,
+};
+
+unsigned long secondary_entry_point;
+
+int nlm_wakeup_secondary_cpus(u32 wakeup_mask)
+{
+ unsigned int tid, pid, ipi, i, boot_cpu;
+ void *reset_vec;
+
+ secondary_entry_point = (unsigned long)prom_pre_boot_secondary_cpus;
+ reset_vec = (void *)CKSEG1ADDR(0x1fc00000);
+ memcpy(reset_vec, nlm_boot_smp_nmi, 0x80);
+ boot_cpu = hard_smp_processor_id();
+
+ for (i = 0; i < NR_CPUS; i++) {
+ if (i == boot_cpu)
+ continue;
+ if (wakeup_mask & (1u << i)) {
+ tid = i & 0x3;
+ pid = (i >> 2) & 0x7;
+ ipi = (tid << 16) | (pid << 20) | (1 << 8);
+ pic_send_ipi(ipi);
+ }
+ }
+
+ return 0;
+}
diff --git a/arch/mips/netlogic/xlr/smpboot.S b/arch/mips/netlogic/xlr/smpboot.S
new file mode 100644
index 00000000000..b8e074402c9
--- /dev/null
+++ b/arch/mips/netlogic/xlr/smpboot.S
@@ -0,0 +1,94 @@
+/*
+ * 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 <asm/asm.h>
+#include <asm/asm-offsets.h>
+#include <asm/regdef.h>
+#include <asm/mipsregs.h>
+
+
+/* Don't jump to linux function from Bootloader stack. Change it
+ * here. Kernel might allocate bootloader memory before all the CPUs are
+ * brought up (eg: Inode cache region) and we better don't overwrite this
+ * memory
+ */
+NESTED(prom_pre_boot_secondary_cpus, 16, sp)
+ .set mips64
+ mfc0 t0, $15, 1 # read ebase
+ andi t0, 0x1f # t0 has the processor_id()
+ sll t0, 2 # offset in cpu array
+
+ PTR_LA t1, nlm_cpu_ready # mark CPU ready
+ PTR_ADDU t1, t0
+ li t2, 1
+ sw t2, 0(t1)
+
+ PTR_LA t1, nlm_cpu_unblock
+ PTR_ADDU t1, t0
+1: lw t2, 0(t1) # wait till unblocked
+ beqz t2, 1b
+ nop
+
+ PTR_LA t1, nlm_next_sp
+ PTR_L sp, 0(t1)
+ PTR_LA t1, nlm_next_gp
+ PTR_L gp, 0(t1)
+
+ PTR_LA t0, nlm_early_init_secondary
+ jalr t0
+ nop
+
+ PTR_LA t0, smp_bootstrap
+ jr t0
+ nop
+END(prom_pre_boot_secondary_cpus)
+
+NESTED(nlm_boot_smp_nmi, 0, sp)
+ .set push
+ .set noat
+ .set mips64
+ .set noreorder
+
+ /* Clear the NMI and BEV bits */
+ MFC0 k0, CP0_STATUS
+ li k1, 0xffb7ffff
+ and k0, k0, k1
+ MTC0 k0, CP0_STATUS
+
+ PTR_LA k1, secondary_entry_point
+ PTR_L k0, 0(k1)
+ jr k0
+ nop
+ .set pop
+END(nlm_boot_smp_nmi)
diff --git a/arch/mips/netlogic/xlr/time.c b/arch/mips/netlogic/xlr/time.c
new file mode 100644
index 00000000000..0d81b262593
--- /dev/null
+++ b/arch/mips/netlogic/xlr/time.c
@@ -0,0 +1,51 @@
+/*
+ * 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/init.h>
+
+#include <asm/time.h>
+#include <asm/netlogic/interrupt.h>
+#include <asm/netlogic/psb-bootinfo.h>
+
+unsigned int __cpuinit get_c0_compare_int(void)
+{
+ return IRQ_TIMER;
+}
+
+void __init plat_time_init(void)
+{
+ mips_hpt_frequency = nlm_prom_info.cpu_frequency;
+ pr_info("MIPS counter frequency [%ld]\n",
+ (unsigned long)mips_hpt_frequency);
+}
diff --git a/arch/mips/netlogic/xlr/xlr_console.c b/arch/mips/netlogic/xlr/xlr_console.c
new file mode 100644
index 00000000000..759df069220
--- /dev/null
+++ b/arch/mips/netlogic/xlr/xlr_console.c
@@ -0,0 +1,46 @@
+/*
+ * 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/types.h>
+#include <asm/netlogic/xlr/iomap.h>
+
+void prom_putchar(char c)
+{
+ nlm_reg_t *mmio;
+
+ mmio = netlogic_io_mmio(NETLOGIC_IO_UART_0_OFFSET);
+ while (netlogic_read_reg(mmio, 0x5) == 0)
+ ;
+ netlogic_write_reg(mmio, 0x0, c);
+}