diff options
Diffstat (limited to 'arch/mips/netlogic/xlp')
| -rw-r--r-- | arch/mips/netlogic/xlp/nlm_hal.c | 105 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/platform.c | 108 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/setup.c | 101 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/smpboot.S | 217 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/wakeup.c | 149 |
5 files changed, 680 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/nlm_hal.c b/arch/mips/netlogic/xlp/nlm_hal.c new file mode 100644 index 000000000000..885f6878594a --- /dev/null +++ b/arch/mips/netlogic/xlp/nlm_hal.c @@ -0,0 +1,105 @@ +/* + * 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 <linux/kernel.h> +#include <linux/mm.h> +#include <linux/delay.h> + +#include <asm/mipsregs.h> +#include <asm/time.h> + +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/pic.h> +#include <asm/netlogic/xlp-hal/sys.h> + +/* These addresses are computed by the nlm_hal_init() */ +uint64_t nlm_io_base; +uint64_t nlm_sys_base; +uint64_t nlm_pic_base; + +/* Main initialization */ +void nlm_hal_init(void) +{ + nlm_io_base = CKSEG1ADDR(XLP_DEFAULT_IO_BASE); + nlm_sys_base = nlm_get_sys_regbase(0); /* node 0 */ + nlm_pic_base = nlm_get_pic_regbase(0); /* node 0 */ +} + +int nlm_irq_to_irt(int irq) +{ + if (!PIC_IRQ_IS_IRT(irq)) + return -1; + + switch (irq) { + case PIC_UART_0_IRQ: + return PIC_IRT_UART_0_INDEX; + case PIC_UART_1_IRQ: + return PIC_IRT_UART_1_INDEX; + default: + return -1; + } +} + +int nlm_irt_to_irq(int irt) +{ + switch (irt) { + case PIC_IRT_UART_0_INDEX: + return PIC_UART_0_IRQ; + case PIC_IRT_UART_1_INDEX: + return PIC_UART_1_IRQ; + default: + return -1; + } +} + +unsigned int nlm_get_cpu_frequency(void) +{ + unsigned int pll_divf, pll_divr, dfs_div, denom; + unsigned int val; + uint64_t num; + + val = nlm_read_sys_reg(nlm_sys_base, SYS_POWER_ON_RESET_CFG); + pll_divf = (val >> 10) & 0x7f; + pll_divr = (val >> 8) & 0x3; + dfs_div = (val >> 17) & 0x3; + + num = pll_divf + 1; + denom = 3 * (pll_divr + 1) * (1 << (dfs_div + 1)); + num = num * 800000000ULL; + do_div(num, denom); + return (unsigned int)num; +} diff --git a/arch/mips/netlogic/xlp/platform.c b/arch/mips/netlogic/xlp/platform.c new file mode 100644 index 000000000000..1f5e4cba891d --- /dev/null +++ b/arch/mips/netlogic/xlp/platform.c @@ -0,0 +1,108 @@ +/* + * 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/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/delay.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/serial.h> +#include <linux/serial_8250.h> +#include <linux/pci.h> +#include <linux/serial_reg.h> +#include <linux/spinlock.h> + +#include <asm/time.h> +#include <asm/addrspace.h> +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/xlp.h> +#include <asm/netlogic/xlp-hal/pic.h> +#include <asm/netlogic/xlp-hal/uart.h> + +static unsigned int nlm_xlp_uart_in(struct uart_port *p, int offset) +{ + return nlm_read_reg(p->iobase, offset); +} + +static void nlm_xlp_uart_out(struct uart_port *p, int offset, int value) +{ + nlm_write_reg(p->iobase, offset, value); +} + +#define PORT(_irq) \ + { \ + .irq = _irq, \ + .regshift = 2, \ + .iotype = UPIO_MEM32, \ + .flags = (UPF_SKIP_TEST|UPF_FIXED_TYPE|\ + UPF_BOOT_AUTOCONF), \ + .uartclk = XLP_IO_CLK, \ + .type = PORT_16550A, \ + .serial_in = nlm_xlp_uart_in, \ + .serial_out = nlm_xlp_uart_out, \ + } + +static struct plat_serial8250_port xlp_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 = xlp_uart_data, + }, +}; + +static int __init nlm_platform_uart_init(void) +{ + unsigned long mmio; + + mmio = (unsigned long)nlm_get_uart_regbase(0, 0); + xlp_uart_data[0].iobase = mmio; + xlp_uart_data[0].membase = (void __iomem *)mmio; + xlp_uart_data[0].mapbase = mmio; + + mmio = (unsigned long)nlm_get_uart_regbase(0, 1); + xlp_uart_data[1].iobase = mmio; + xlp_uart_data[1].membase = (void __iomem *)mmio; + xlp_uart_data[1].mapbase = mmio; + + return platform_device_register(&uart_device); +} + +arch_initcall(nlm_platform_uart_init); diff --git a/arch/mips/netlogic/xlp/setup.c b/arch/mips/netlogic/xlp/setup.c new file mode 100644 index 000000000000..f40a0e73580f --- /dev/null +++ b/arch/mips/netlogic/xlp/setup.c @@ -0,0 +1,101 @@ +/* + * 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 <linux/of_fdt.h> + +#include <asm/netlogic/haldefs.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> + +unsigned long nlm_common_ebase = 0x0; + +static void nlm_linux_exit(void) +{ + nlm_write_sys_reg(nlm_sys_base, SYS_CHIP_RESET, 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 XLP Series"; +} + +void __init prom_free_prom_memory(void) +{ + /* Nothing yet */ +} + +void xlp_mmu_init(void) +{ + write_c0_config6(read_c0_config6() | 0x24); + current_cpu_data.tlbsize = ((read_c0_config6() >> 16) & 0xffff) + 1; + write_c0_config7(PM_DEFAULT_MASK >> + (13 + (ffz(PM_DEFAULT_MASK >> 13) / 2))); +} + +void __init prom_init(void) +{ + void *fdtp; + + fdtp = (void *)(long)fw_arg0; + xlp_mmu_init(); + nlm_hal_init(); + early_init_devtree(fdtp); + + nlm_common_ebase = read_c0_ebase() & (~((1 << 12) - 1)); +#ifdef CONFIG_SMP + nlm_wakeup_secondary_cpus(0xffffffff); + register_smp_ops(&nlm_smp_ops); +#endif +} diff --git a/arch/mips/netlogic/xlp/smpboot.S b/arch/mips/netlogic/xlp/smpboot.S new file mode 100644 index 000000000000..7dd323234d70 --- /dev/null +++ b/arch/mips/netlogic/xlp/smpboot.S @@ -0,0 +1,217 @@ +/* + * 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> +#include <asm/stackframe.h> +#include <asm/asmmacro.h> +#include <asm/addrspace.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 + +.macro __config_lsu + li t0, LSU_DEFEATURE + mfcr t1, t0 + + lui t2, 0x4080 /* Enable Unaligned Access, L2HPE */ + or t1, t1, t2 + li t2, ~0xe /* S1RCM */ + and t1, t1, t2 + mtcr t1, t0 + + li t0, SCHED_DEFEATURE + lui t1, 0x0100 /* Experimental: Disable BRU accepting ALU ops */ + mtcr t1, t0 +.endm + + .set noreorder + .set arch=xlr /* for mfcr/mtcr, XLR is sufficient */ + + __CPUINIT +EXPORT(nlm_reset_entry) + 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. */ + __config_lsu + +/* + * Wake up sibling threads from the initial thread in + * a core. + */ +EXPORT(nlm_boot_siblings) + 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, 0x7f /* v0 <- node/core */ + +#if 1 + /* A0 errata - Write MMU_SETUP after changing thread mode register. */ + andi v1, v0, 0x3 /* v1 <- thread id */ + bnez v1, 2f + nop + + li t0, MMU_SETUP + li t1, 0 + mtcr t1, t0 + ehb +#endif + +2: beqz v0, 3f + nop + + /* setup status reg */ + mfc0 t1, CP0_STATUS + li t0, ST0_BEV + or t1, t0 + xor t1, t0 +#ifdef CONFIG_64BIT + 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 + nop + + /* + * For the boot CPU, we have to restore registers and + * return + */ +3: 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) + +EXPORT(nlm_boot_core0_siblings) /* "Master" (n0c0t0) cpu starts from here */ + __config_lsu + dmtc0 sp, $4, 2 /* SP saved in UserLocal */ + SAVE_ALL + sync + /* find the location to which nlm_boot_siblings was relocated */ + li t0, CKSEG1ADDR(RESET_VEC_PHYS) + dla t1, nlm_reset_entry + dla t2, nlm_boot_siblings + dsubu t2, t1 + daddu t2, t0 + /* call it */ + jr t2 + nop + __FINIT + + __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 + PTR_L sp, 0(t1) + PTR_LA t1, nlm_next_gp + PTR_L gp, 0(t1) + + /* a0 has the processor id */ + PTR_LA t0, nlm_early_init_secondary + jalr t0 + nop + + PTR_LA t0, smp_bootstrap + jr t0 + nop +END(prom_pre_boot_secondary_cpus) + __FINIT diff --git a/arch/mips/netlogic/xlp/wakeup.c b/arch/mips/netlogic/xlp/wakeup.c new file mode 100644 index 000000000000..e081a778678e --- /dev/null +++ b/arch/mips/netlogic/xlp/wakeup.c @@ -0,0 +1,149 @@ +/* + * 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 <linux/kernel.h> +#include <linux/threads.h> + +#include <asm/asm.h> +#include <asm/asm-offsets.h> +#include <asm/mipsregs.h> +#include <asm/addrspace.h> +#include <asm/string.h> + +#include <asm/netlogic/haldefs.h> +#include <asm/netlogic/common.h> +#include <asm/netlogic/mips-extns.h> + +#include <asm/netlogic/xlp-hal/iomap.h> +#include <asm/netlogic/xlp-hal/pic.h> +#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) +{ + uint32_t core, value, coremask; + + for (core = 1; core < 8; core++) { + coremask = 1 << core; + if ((cores_bitmap & coremask) == 0) + continue; + + /* Enable CPU clock */ + value = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL); + value &= ~coremask; + nlm_write_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIS_CTRL, value); + + /* Remove CPU Reset */ + value = nlm_read_sys_reg(nlm_sys_base, SYS_CPU_RESET); + value &= ~coremask; + nlm_write_sys_reg(nlm_sys_base, SYS_CPU_RESET, value); + + /* Poll for CPU to mark itself coherent */ + 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; + + 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; + } + + /* 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) +{ + 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; +} |