MIPS: Netlogic: Split reset code out of smpboot.S
The reset and core initialization code should be available for
uniprocessor as well. This changes is just to take out the code
into a different file, without any change to the logic.
The change for uniprocessor initialization code is in a later patch.
Signed-off-by: Jayachandran C <jchandra@broadcom.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/5423/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/netlogic/common/smpboot.S b/arch/mips/netlogic/common/smpboot.S
index 0265174..7c7e884 100644
--- a/arch/mips/netlogic/common/smpboot.S
+++ b/arch/mips/netlogic/common/smpboot.S
@@ -50,197 +50,12 @@
#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