/*
* Common SMP definitions
*/
+#define RESET_VEC_PHYS 0x1fc00000
+#define RESET_DATA_PHYS (RESET_VEC_PHYS + (1<<10))
+#define BOOT_THREAD_MODE 0
+#define BOOT_NMI_LOCK 4
+#define BOOT_NMI_HANDLER 8
+
+#ifndef __ASSEMBLY__
struct irq_desc;
extern struct plat_smp_ops nlm_smp_ops;
extern char nlm_reset_entry[], nlm_reset_entry_end[];
void nlm_smp_function_ipi_handler(unsigned int irq, struct irq_desc *desc);
void nlm_smp_resched_ipi_handler(unsigned int irq, struct irq_desc *desc);
void nlm_smp_irq_init(void);
-void prom_pre_boot_secondary_cpus(void);
+void nlm_boot_secondary_cpus(void);
int nlm_wakeup_secondary_cpus(u32 wakeup_mask);
-void nlm_boot_smp_nmi(void);
+void nlm_rmiboot_preboot(void);
+
+static inline void
+nlm_set_nmi_handler(void *handler)
+{
+ char *reset_data;
+
+ reset_data = (char *)CKSEG1ADDR(RESET_DATA_PHYS);
+ *(int64_t *)(reset_data + BOOT_NMI_HANDLER) = (long)handler;
+}
/*
* Misc.
*/
+unsigned int nlm_get_cpu_frequency(void);
+
extern unsigned long nlm_common_ebase;
-unsigned int nlm_get_cpu_frequency(void);
+extern int nlm_threads_per_core;
+extern uint32_t nlm_cpumask, nlm_coremask;
+#endif
#endif /* _NETLOGIC_COMMON_H_ */
#ifndef _NLM_HAL_XLP_H
#define _NLM_HAL_XLP_H
-#define RESET_VEC_PHYS 0x1fc00000
-#define RESET_DATA_PHYS (RESET_VEC_PHYS + (1<<10))
-#define BOOT_THREAD_MODE 0
-
#define PIC_UART_0_IRQ 17
#define PIC_UART_1_IRQ 18
#ifndef __ASSEMBLY__
/* SMP support functions */
-void nlm_boot_core0_siblings(void);
+void xlp_boot_core0_siblings(void);
+void xlp_wakeup_secondary_cpus(void);
void xlp_mmu_init(void);
void nlm_hal_init(void);
unsigned int nlm_xlr_uart_in(struct uart_port *, int);
void nlm_xlr_uart_out(struct uart_port *, int, int);
+/* SMP helpers */
+void xlr_wakeup_secondary_cpus(void);
/* XLS B silicon "Rook" */
static inline unsigned int nlm_chip_is_xls_b(void)
obj-y += irq.o time.o
-obj-$(CONFIG_SMP) += smp.o
+obj-$(CONFIG_SMP) += smp.o smpboot.o
obj-$(CONFIG_EARLY_PRINTK) += earlycons.o
#if defined(CONFIG_CPU_XLP)
#include <asm/netlogic/xlp-hal/iomap.h>
+#include <asm/netlogic/xlp-hal/xlp.h>
#include <asm/netlogic/xlp-hal/pic.h>
#elif defined(CONFIG_CPU_XLR)
#include <asm/netlogic/xlr/iomap.h>
#include <asm/netlogic/xlr/pic.h>
+#include <asm/netlogic/xlr/xlr.h>
#else
#error "Unknown CPU"
#endif
* 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)
/* barrier */
__sync();
- nlm_cpu_unblock[cpu] = 1;
+ nlm_pic_send_ipi(nlm_pic_base, cpu, 1, 1);
}
void __init nlm_smp_setup(void)
(unsigned long)cpu_possible_map.bits[0]);
pr_info("Detected %i Slave CPU(s)\n", num_cpus);
+ nlm_set_nmi_handler(nlm_boot_secondary_cpus);
}
void nlm_prepare_cpus(unsigned int max_cpus)
{
}
+static int nlm_parse_cpumask(u32 cpu_mask)
+{
+ uint32_t core0_thr_mask, core_thr_mask;
+ int threadmode, i;
+
+ core0_thr_mask = cpu_mask & 0xf;
+ switch (core0_thr_mask) {
+ case 1:
+ nlm_threads_per_core = 1;
+ threadmode = 0;
+ break;
+ case 3:
+ nlm_threads_per_core = 2;
+ threadmode = 2;
+ break;
+ case 0xf:
+ nlm_threads_per_core = 4;
+ threadmode = 3;
+ break;
+ default:
+ goto unsupp;
+ }
+
+ /* Verify other cores CPU masks */
+ nlm_coremask = 1;
+ nlm_cpumask = core0_thr_mask;
+ for (i = 1; i < 8; i++) {
+ core_thr_mask = (cpu_mask >> (i * 4)) & 0xf;
+ if (core_thr_mask) {
+ if (core_thr_mask != core0_thr_mask)
+ goto unsupp;
+ nlm_coremask |= 1 << i;
+ nlm_cpumask |= core0_thr_mask << (4 * i);
+ }
+ }
+ return threadmode;
+
+unsupp:
+ panic("Unsupported CPU mask %x\n", cpu_mask);
+ return 0;
+}
+
+int __cpuinit nlm_wakeup_secondary_cpus(u32 wakeup_mask)
+{
+ unsigned long reset_vec;
+ char *reset_data;
+ int threadmode;
+
+ /* Update reset entry point with CPU init code */
+ reset_vec = CKSEG1ADDR(RESET_VEC_PHYS);
+ memcpy((void *)reset_vec, (void *)nlm_reset_entry,
+ (nlm_reset_entry_end - nlm_reset_entry));
+
+ /* verify the mask and setup core config variables */
+ threadmode = nlm_parse_cpumask(wakeup_mask);
+
+ /* Setup CPU init parameters */
+ reset_data = (char *)CKSEG1ADDR(RESET_DATA_PHYS);
+ *(int *)(reset_data + BOOT_THREAD_MODE) = threadmode;
+
+#ifdef CONFIG_CPU_XLP
+ xlp_wakeup_secondary_cpus();
+#else
+ xlr_wakeup_secondary_cpus();
+#endif
+ return 0;
+}
+
struct plat_smp_ops nlm_smp_ops = {
.send_ipi_single = nlm_send_ipi_single,
.send_ipi_mask = nlm_send_ipi_mask,
#include <asm/asmmacro.h>
#include <asm/addrspace.h>
+#include <asm/netlogic/common.h>
+
#include <asm/netlogic/xlp-hal/iomap.h>
#include <asm/netlogic/xlp-hal/xlp.h>
#include <asm/netlogic/xlp-hal/sys.h>
mtcr t1, t0
.endm
+/*
+ * The cores can come start when they are woken up. This is also the NMI
+ * entry, so check that first.
+ *
+ * The data corresponding to reset is stored at RESET_DATA_PHYS location,
+ * this will have the thread mask (used when core is woken up) and the
+ * current NMI handler in case we reached here for an NMI.
+ *
+ * When a core or thread is newly woken up, it loops in a 'wait'. When
+ * the CPU really needs waking up, we send an NMI to it, with the NMI
+ * handler set to prom_boot_secondary_cpus
+ */
+
.set noreorder
+ .set noat
.set arch=xlr /* for mfcr/mtcr, XLR is sufficient */
- __CPUINIT
-EXPORT(nlm_reset_entry)
+FEXPORT(nlm_reset_entry)
+ dmtc0 k0, $22, 6
+ dmtc0 k1, $22, 7
+ mfc0 k0, CP0_STATUS
+ li k1, 0x80000
+ and k1, k0, k1
+ beqz k1, 1f /* go to real reset entry */
+ nop
+ li k1, CKSEG1ADDR(RESET_DATA_PHYS) /* NMI */
+ ld k0, BOOT_NMI_HANDLER(k1)
+ jr k0
+ nop
+
+1: /* Entry point on core wakeup */
mfc0 t0, CP0_EBASE, 1
mfc0 t1, CP0_EBASE, 1
srl t1, 5
ehb
#endif
-2: beqz v0, 3f
+2: beqz v0, 4f
nop
/* setup status reg */
ori t1, ST0_KX
#endif
mtc0 t1, CP0_STATUS
-
- /* SETUP TLBs for a mapped kernel here */
- PTR_LA t0, prom_pre_boot_secondary_cpus
- jalr t0
+ /* mark CPU ready */
+ PTR_LA t1, nlm_cpu_ready
+ sll v1, v0, 2
+ PTR_ADDU t1, v1
+ li t2, 1
+ sw t2, 0(t1)
+ /* Wait until NMI hits */
+3: wait
+ j 3b
nop
/*
* For the boot CPU, we have to restore registers and
* return
*/
-3: dmfc0 t0, $4, 2 /* restore SP from UserLocal */
+4: dmfc0 t0, $4, 2 /* restore SP from UserLocal */
li t1, 0xfadebeef
dmtc0 t1, $4, 2 /* restore SP from UserLocal */
PTR_SUBU sp, t0, PT_SIZE
nop
EXPORT(nlm_reset_entry_end)
-EXPORT(nlm_boot_core0_siblings) /* "Master" (n0c0t0) cpu starts from here */
+FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */
__config_lsu
dmtc0 sp, $4, 2 /* SP saved in UserLocal */
SAVE_ALL
/* call it */
jr t2
nop
- __FINIT
+ /* not reached */
__CPUINIT
-NESTED(prom_pre_boot_secondary_cpus, 16, sp)
- .set mips64
- mfc0 a0, CP0_EBASE, 1 /* read ebase */
- andi a0, 0x3ff /* a0 has the processor_id() */
- sll t0, a0, 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 */
- bnez t2, 2f
- nop
- nop
- nop
- nop
- nop
- nop
- j 1b
- nop
-
-2: PTR_LA t1, nlm_next_sp
+NESTED(nlm_boot_secondary_cpus, 16, sp)
+ 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, smp_bootstrap
jr t0
nop
-END(prom_pre_boot_secondary_cpus)
+END(nlm_boot_secondary_cpus)
+ __FINIT
+
+/*
+ * In case of RMIboot bootloader which is used on XLR boards, the CPUs
+ * be already woken up and waiting in bootloader code.
+ * This will get them out of the bootloader code and into linux. Needed
+ * because the bootloader area will be taken and initialized by linux.
+ */
+ __CPUINIT
+NESTED(nlm_rmiboot_preboot, 16, sp)
+ mfc0 t0, $15, 1 # read ebase
+ andi t0, 0x1f # t0 has the processor_id()
+ andi t2, t0, 0x3 # thread no
+ sll t0, 2 # offset in cpu array
+
+ PTR_LA t1, nlm_cpu_ready # mark CPU ready
+ PTR_ADDU t1, t0
+ li t3, 1
+ sw t3, 0(t1)
+
+ bnez t2, 1f # skip thread programming
+ nop # for non zero hw threads
+
+ /*
+ * MMU setup only for first thread in core
+ */
+ li t0, 0x400
+ mfcr t1, t0
+ li t2, 6 # XLR thread mode mask
+ nor t3, t2, zero
+ and t2, t1, t2 # t2 - current thread mode
+ li v0, CKSEG1ADDR(RESET_DATA_PHYS)
+ lw v1, BOOT_THREAD_MODE(v0) # v1 - new thread mode
+ sll v1, 1
+ beq v1, t2, 1f # same as request value
+ nop # nothing to do */
+
+ and t2, t1, t3 # mask out old thread mode
+ or t1, t2, v1 # put in new value
+ mtcr t1, t0 # update core control
+
+1: wait
+ j 1b
+ nop
+END(nlm_rmiboot_preboot)
__FINIT
obj-y += setup.o platform.o nlm_hal.o
-obj-$(CONFIG_SMP) += smpboot.o wakeup.o
+obj-$(CONFIG_SMP) += wakeup.o
unsigned long nlm_common_ebase = 0x0;
+/* default to uniprocessor */
+uint32_t nlm_coremask = 1, nlm_cpumask = 1;
+int nlm_threads_per_core = 1;
+
static void nlm_linux_exit(void)
{
nlm_write_sys_reg(nlm_sys_base, SYS_CHIP_RESET, 1);
#include <asm/netlogic/xlp-hal/xlp.h>
#include <asm/netlogic/xlp-hal/sys.h>
-unsigned long secondary_entry;
-uint32_t nlm_coremask;
-unsigned int nlm_threads_per_core;
-unsigned int nlm_threadmode;
-
-static void nlm_enable_secondary_cores(unsigned int cores_bitmap)
+static void xlp_enable_secondary_cores(void)
{
- uint32_t core, value, coremask;
+ uint32_t core, value, coremask, syscoremask;
+ int count;
+
+ /* read cores in reset from SYS block */
+ syscoremask = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET);
+
+ /* update user specified */
+ nlm_coremask = nlm_coremask & (syscoremask | 1);
for (core = 1; core < 8; core++) {
coremask = 1 << core;
- if ((cores_bitmap & coremask) == 0)
+ if ((nlm_coremask & coremask) == 0)
continue;
/* Enable CPU clock */
nlm_write_sys_reg(nlm_sys_base, SYS_CPU_RESET, value);
/* Poll for CPU to mark itself coherent */
+ count = 100000;
do {
value = nlm_read_sys_reg(nlm_sys_base,
SYS_CPU_NONCOHERENT_MODE);
- } while ((value & coremask) != 0);
- }
-}
-
-
-static void nlm_parse_cpumask(u32 cpu_mask)
-{
- uint32_t core0_thr_mask, core_thr_mask;
- int i;
+ } while ((value & coremask) != 0 && count-- > 0);
- core0_thr_mask = cpu_mask & 0xf;
- switch (core0_thr_mask) {
- case 1:
- nlm_threads_per_core = 1;
- nlm_threadmode = 0;
- break;
- case 3:
- nlm_threads_per_core = 2;
- nlm_threadmode = 2;
- break;
- case 0xf:
- nlm_threads_per_core = 4;
- nlm_threadmode = 3;
- break;
- default:
- goto unsupp;
+ if (count == 0)
+ pr_err("Failed to enable core %d\n", core);
}
-
- /* Verify other cores CPU masks */
- nlm_coremask = 1;
- for (i = 1; i < 8; i++) {
- core_thr_mask = (cpu_mask >> (i * 4)) & 0xf;
- if (core_thr_mask) {
- if (core_thr_mask != core0_thr_mask)
- goto unsupp;
- nlm_coremask |= 1 << i;
- }
- }
- return;
-
-unsupp:
- panic("Unsupported CPU mask %x\n", cpu_mask);
}
-int __cpuinit nlm_wakeup_secondary_cpus(u32 wakeup_mask)
+void xlp_wakeup_secondary_cpus(void)
{
- unsigned long reset_vec;
- unsigned int *reset_data;
-
- /* Update reset entry point with CPU init code */
- reset_vec = CKSEG1ADDR(RESET_VEC_PHYS);
- memcpy((void *)reset_vec, (void *)nlm_reset_entry,
- (nlm_reset_entry_end - nlm_reset_entry));
-
- /* verify the mask and setup core config variables */
- nlm_parse_cpumask(wakeup_mask);
-
- /* Setup CPU init parameters */
- reset_data = (unsigned int *)CKSEG1ADDR(RESET_DATA_PHYS);
- reset_data[BOOT_THREAD_MODE] = nlm_threadmode;
-
- /* first wakeup core 0 siblings */
- nlm_boot_core0_siblings();
-
- /* enable the reset of the cores */
- nlm_enable_secondary_cores(nlm_coremask);
- return 0;
+ /*
+ * In case of u-boot, the secondaries are in reset
+ * first wakeup core 0 threads
+ */
+ xlp_boot_core0_siblings();
+
+ /* now get other cores out of reset */
+ xlp_enable_secondary_cores();
}
obj-y += setup.o platform.o
-obj-$(CONFIG_SMP) += smpboot.o wakeup.o
+obj-$(CONFIG_SMP) += wakeup.o
uint64_t nlm_io_base = DEFAULT_NETLOGIC_IO_BASE;
uint64_t nlm_pic_base;
-unsigned long nlm_common_ebase = 0x0;
struct psb_info nlm_prom_info;
+unsigned long nlm_common_ebase = 0x0;
+
+/* default to uniprocessor */
+uint32_t nlm_coremask = 1, nlm_cpumask = 1;
+int nlm_threads_per_core = 1;
+
static void __init nlm_early_serial_setup(void)
{
struct uart_port s;
+++ /dev/null
-/*
- * 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/asm.h>
-#include <asm/asm-offsets.h>
-#include <asm/regdef.h>
-#include <asm/mipsregs.h>
-
-/*
- * Early code for secondary CPUs. This will get them out of the bootloader
- * code and into linux. Needed because the bootloader area will be taken
- * and initialized by linux.
- */
- __CPUINIT
-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)
-
-/*
- * NMI code, used for CPU wakeup, copied to reset entry
- */
-EXPORT(nlm_reset_entry)
- .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
-EXPORT(nlm_reset_entry_end)
- __FINIT
#include <asm/netlogic/xlr/iomap.h>
#include <asm/netlogic/xlr/pic.h>
-unsigned long secondary_entry_point;
-
-int __cpuinit nlm_wakeup_secondary_cpus(u32 wakeup_mask)
+int __cpuinit xlr_wakeup_secondary_cpus(void)
{
unsigned int i, boot_cpu;
- void *reset_vec;
- secondary_entry_point = (unsigned long)prom_pre_boot_secondary_cpus;
- reset_vec = (void *)CKSEG1ADDR(0x1fc00000);
- memcpy(reset_vec, (void *)nlm_reset_entry,
- (nlm_reset_entry_end - nlm_reset_entry));
+ /*
+ * In case of RMI boot, hit with NMI to get the cores
+ * from bootloader to linux code.
+ */
boot_cpu = hard_smp_processor_id();
-
+ nlm_set_nmi_handler(nlm_rmiboot_preboot);
for (i = 0; i < NR_CPUS; i++) {
- if (i == boot_cpu || (wakeup_mask & (1u << i)) == 0)
+ if (i == boot_cpu || (nlm_cpumask & (1u << i)) == 0)
continue;
nlm_pic_send_ipi(nlm_pic_base, i, 1, 1); /* send NMI */
}
projects / karo-tx-linux.git / commitdiff