--- /dev/null
+/*
+ * Copyright 2003-2013 Broadcom Corporation.
+ * 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 Broadcom
+ * 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 BROADCOM ``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 BROADCOM 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>
+#include <asm/stackframe.h>
+#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>
+#include <asm/netlogic/xlp-hal/cpucontrol.h>
+
+#define CP0_EBASE $15
+#define SYS_CPU_COHERENT_BASE(node) CKSEG1ADDR(XLP_DEFAULT_IO_BASE) + \
+ XLP_IO_SYS_OFFSET(node) + XLP_IO_PCI_HDRSZ + \
+ SYS_CPU_NONCOHERENT_MODE * 4
+
+#define XLP_AX_WORKAROUND /* enable Ax silicon workarounds */
+
+/* Enable XLP features and workarounds in the LSU */
+.macro xlp_config_lsu
+ li t0, LSU_DEFEATURE
+ mfcr t1, t0
+
+ lui t2, 0xc080 /* SUE, Enable Unaligned Access, L2HPE */
+ or t1, t1, t2
+#ifdef XLP_AX_WORKAROUND
+ li t2, ~0xe /* S1RCM */
+ and t1, t1, t2
+#endif
+ mtcr t1, t0
+
+ li t0, ICU_DEFEATURE
+ mfcr t1, t0
+ ori t1, 0x1000 /* Enable Icache partitioning */
+ mtcr t1, t0
+
+
+#ifdef XLP_AX_WORKAROUND
+ li t0, SCHED_DEFEATURE
+ lui t1, 0x0100 /* Disable BRU accepting ALU ops */
+ mtcr t1, t0
+#endif
+.endm
+
+/*
+ * Low level flush for L1D cache on XLP, the normal cache ops does
+ * not do the complete and correct cache flush.
+ */
+.macro xlp_flush_l1_dcache
+ li t0, LSU_DEBUG_DATA0
+ li t1, LSU_DEBUG_ADDR
+ li t2, 0 /* index */
+ li t3, 0x1000 /* loop count */
+1:
+ sll v0, t2, 5
+ mtcr zero, t0
+ ori v1, v0, 0x3 /* way0 | write_enable | write_active */
+ mtcr v1, t1
+2:
+ mfcr v1, t1
+ andi v1, 0x1 /* wait for write_active == 0 */
+ bnez v1, 2b
+ nop
+ mtcr zero, t0
+ ori v1, v0, 0x7 /* way1 | write_enable | write_active */
+ mtcr v1, t1
+3:
+ mfcr v1, t1
+ andi v1, 0x1 /* wait for write_active == 0 */
+ bnez v1, 3b
+ nop
+ addi t2, 1
+ bne t3, t2, 1b
+ nop
+.endm
+
+/*
+ * nlm_reset_entry will be copied to the reset entry point for
+ * XLR and XLP. The XLP cores start here when they are woken up. This
+ * is also the NMI entry point.
+ *
+ * We use scratch reg 6/7 to save k0/k1 and check for NMI first.
+ *
+ * The data corresponding to reset/NMI 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 marks itself ready and
+ * loops in a 'wait'. When the CPU really needs waking up, we send an NMI
+ * IPI 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 */
+
+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
+ andi t1, 0x3 /* t1 <- node */
+ li t2, 0x40000
+ mul t3, t2, t1 /* t3 = node * 0x40000 */
+ srl t0, t0, 2
+ and t0, t0, 0x7 /* t0 <- core */
+ li t1, 0x1
+ sll t0, t1, t0
+ nor t0, t0, zero /* t0 <- ~(1 << core) */
+ li t2, SYS_CPU_COHERENT_BASE(0)
+ add t2, t2, t3 /* t2 <- SYS offset for node */
+ lw t1, 0(t2)
+ and t1, t1, t0
+ sw t1, 0(t2)
+
+ /* read back to ensure complete */
+ lw t1, 0(t2)
+ sync
+
+ /* Configure LSU on Non-0 Cores. */
+ xlp_config_lsu
+ /* FALL THROUGH */
+
+/*
+ * Wake up sibling threads from the initial thread in
+ * a core.
+ */
+EXPORT(nlm_boot_siblings)
+ /* core L1D flush before enable threads */
+ xlp_flush_l1_dcache
+ /* Enable hw threads by writing to MAP_THREADMODE of the core */
+ li t0, CKSEG1ADDR(RESET_DATA_PHYS)
+ lw t1, BOOT_THREAD_MODE(t0) /* t1 <- thread mode */
+ li t0, ((CPU_BLOCKID_MAP << 8) | MAP_THREADMODE)
+ mfcr t2, t0
+ or t2, t2, t1
+ mtcr t2, t0
+
+ /*
+ * The new hardware thread starts at the next instruction
+ * For all the cases other than core 0 thread 0, we will
+ * jump to the secondary wait function.
+ */
+ mfc0 v0, CP0_EBASE, 1
+ andi v0, 0x3ff /* v0 <- node/core */
+
+ /* Init MMU in the first thread after changing THREAD_MODE
+ * register (Ax Errata?)
+ */
+ andi v1, v0, 0x3 /* v1 <- thread id */
+ bnez v1, 2f
+ nop
+
+ li t0, MMU_SETUP
+ li t1, 0
+ mtcr t1, t0
+ _ehb
+
+2: beqz v0, 4f /* boot cpu (cpuid == 0)? */
+ nop
+
+ /* setup status reg */
+ move t1, zero
+#ifdef CONFIG_64BIT
+ ori t1, ST0_KX
+#endif
+ mtc0 t1, CP0_STATUS
+ /* 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
+ */
+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
+ RESTORE_ALL
+ jr ra
+ nop
+EXPORT(nlm_reset_entry_end)
+
+LEAF(nlm_init_boot_cpu)
+#ifdef CONFIG_CPU_XLP
+ xlp_config_lsu
+#endif
+ jr ra
+ nop
+END(nlm_init_boot_cpu)
#include <asm/netlogic/xlp-hal/cpucontrol.h>
#define CP0_EBASE $15
-#define SYS_CPU_COHERENT_BASE(node) CKSEG1ADDR(XLP_DEFAULT_IO_BASE) + \
- XLP_IO_SYS_OFFSET(node) + XLP_IO_PCI_HDRSZ + \
- SYS_CPU_NONCOHERENT_MODE * 4
-
-#define XLP_AX_WORKAROUND /* enable Ax silicon workarounds */
-
-/* Enable XLP features and workarounds in the LSU */
-.macro xlp_config_lsu
- li t0, LSU_DEFEATURE
- mfcr t1, t0
-
- lui t2, 0xc080 /* SUE, Enable Unaligned Access, L2HPE */
- or t1, t1, t2
-#ifdef XLP_AX_WORKAROUND
- li t2, ~0xe /* S1RCM */
- and t1, t1, t2
-#endif
- mtcr t1, t0
-
- li t0, ICU_DEFEATURE
- mfcr t1, t0
- ori t1, 0x1000 /* Enable Icache partitioning */
- mtcr t1, t0
-
-
-#ifdef XLP_AX_WORKAROUND
- li t0, SCHED_DEFEATURE
- lui t1, 0x0100 /* Disable BRU accepting ALU ops */
- mtcr t1, t0
-#endif
-.endm
-
-/*
- * This is the code that will be copied to the reset entry point for
- * XLR and XLP. The XLP cores start here when they are woken up. This
- * is also the NMI entry point.
- */
-.macro xlp_flush_l1_dcache
- li t0, LSU_DEBUG_DATA0
- li t1, LSU_DEBUG_ADDR
- li t2, 0 /* index */
- li t3, 0x1000 /* loop count */
-1:
- sll v0, t2, 5
- mtcr zero, t0
- ori v1, v0, 0x3 /* way0 | write_enable | write_active */
- mtcr v1, t1
-2:
- mfcr v1, t1
- andi v1, 0x1 /* wait for write_active == 0 */
- bnez v1, 2b
- nop
- mtcr zero, t0
- ori v1, v0, 0x7 /* way1 | write_enable | write_active */
- mtcr v1, t1
-3:
- mfcr v1, t1
- andi v1, 0x1 /* wait for write_active == 0 */
- bnez v1, 3b
- nop
- addi t2, 1
- bne t3, t2, 1b
- nop
-.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/NMI 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 */
-
-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
- andi t1, 0x3 /* t1 <- node */
- li t2, 0x40000
- mul t3, t2, t1 /* t3 = node * 0x40000 */
- srl t0, t0, 2
- and t0, t0, 0x7 /* t0 <- core */
- li t1, 0x1
- sll t0, t1, t0
- nor t0, t0, zero /* t0 <- ~(1 << core) */
- li t2, SYS_CPU_COHERENT_BASE(0)
- add t2, t2, t3 /* t2 <- SYS offset for node */
- lw t1, 0(t2)
- and t1, t1, t0
- sw t1, 0(t2)
-
- /* read back to ensure complete */
- lw t1, 0(t2)
- sync
-
- /* Configure LSU on Non-0 Cores. */
- xlp_config_lsu
- /* FALL THROUGH */
-
-/*
- * Wake up sibling threads from the initial thread in
- * a core.
- */
-EXPORT(nlm_boot_siblings)
- /* core L1D flush before enable threads */
- xlp_flush_l1_dcache
- /* Enable hw threads by writing to MAP_THREADMODE of the core */
- li t0, CKSEG1ADDR(RESET_DATA_PHYS)
- lw t1, BOOT_THREAD_MODE(t0) /* t1 <- thread mode */
- li t0, ((CPU_BLOCKID_MAP << 8) | MAP_THREADMODE)
- mfcr t2, t0
- or t2, t2, t1
- mtcr t2, t0
-
- /*
- * The new hardware thread starts at the next instruction
- * For all the cases other than core 0 thread 0, we will
- * jump to the secondary wait function.
- */
- mfc0 v0, CP0_EBASE, 1
- andi v0, 0x3ff /* v0 <- node/core */
-
- /* Init MMU in the first thread after changing THREAD_MODE
- * register (Ax Errata?)
- */
- andi v1, v0, 0x3 /* v1 <- thread id */
- bnez v1, 2f
- nop
-
- li t0, MMU_SETUP
- li t1, 0
- mtcr t1, t0
- _ehb
-
-2: beqz v0, 4f /* boot cpu (cpuid == 0)? */
- nop
-
- /* setup status reg */
- move t1, zero
-#ifdef CONFIG_64BIT
- ori t1, ST0_KX
-#endif
- mtc0 t1, CP0_STATUS
- /* 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
- */
-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
- RESTORE_ALL
- jr ra
- nop
-EXPORT(nlm_reset_entry_end)
+ .set arch=xlr /* for mfcr/mtcr, XLR is sufficient */
FEXPORT(xlp_boot_core0_siblings) /* "Master" cpu starts from here */
- xlp_config_lsu
dmtc0 sp, $4, 2 /* SP saved in UserLocal */
SAVE_ALL
sync
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