diff options
Diffstat (limited to 'arch/mips/netlogic/xlp')
| -rw-r--r-- | arch/mips/netlogic/xlp/Makefile | 2 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/nlm_hal.c | 111 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/platform.c | 108 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/setup.c | 105 | ||||
| -rw-r--r-- | arch/mips/netlogic/xlp/wakeup.c | 102 |
5 files changed, 428 insertions, 0 deletions
diff --git a/arch/mips/netlogic/xlp/Makefile b/arch/mips/netlogic/xlp/Makefile new file mode 100644 index 0000000..b93ed83 --- /dev/null +++ b/arch/mips/netlogic/xlp/Makefile @@ -0,0 +1,2 @@ +obj-y += setup.o platform.o nlm_hal.o +obj-$(CONFIG_SMP) += wakeup.o diff --git a/arch/mips/netlogic/xlp/nlm_hal.c b/arch/mips/netlogic/xlp/nlm_hal.c new file mode 100644 index 0000000..9428e71 --- /dev/null +++ b/arch/mips/netlogic/xlp/nlm_hal.c @@ -0,0 +1,111 @@ +/* + * 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_core_frequency(int core) +{ + unsigned int pll_divf, pll_divr, dfs_div, ext_div; + unsigned int rstval, dfsval, denom; + uint64_t num; + + rstval = nlm_read_sys_reg(nlm_sys_base, SYS_POWER_ON_RESET_CFG); + dfsval = nlm_read_sys_reg(nlm_sys_base, SYS_CORE_DFS_DIV_VALUE); + pll_divf = ((rstval >> 10) & 0x7f) + 1; + pll_divr = ((rstval >> 8) & 0x3) + 1; + ext_div = ((rstval >> 30) & 0x3) + 1; + dfs_div = ((dfsval >> (core * 4)) & 0xf) + 1; + + num = 800000000ULL * pll_divf; + denom = 3 * pll_divr * ext_div * dfs_div; + do_div(num, denom); + return (unsigned int)num; +} + +unsigned int nlm_get_cpu_frequency(void) +{ + return nlm_get_core_frequency(0); +} diff --git a/arch/mips/netlogic/xlp/platform.c b/arch/mips/netlogic/xlp/platform.c new file mode 100644 index 0000000..1f5e4cb --- /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 0000000..acb677a --- /dev/null +++ b/arch/mips/netlogic/xlp/setup.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/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; + +/* 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); + 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/wakeup.c b/arch/mips/netlogic/xlp/wakeup.c new file mode 100644 index 0000000..44d923f --- /dev/null +++ b/arch/mips/netlogic/xlp/wakeup.c @@ -0,0 +1,102 @@ +/* + * 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> + +static void xlp_enable_secondary_cores(void) +{ + 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 ((nlm_coremask & 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 */ + count = 100000; + do { + value = nlm_read_sys_reg(nlm_sys_base, + SYS_CPU_NONCOHERENT_MODE); + } while ((value & coremask) != 0 && count-- > 0); + + if (count == 0) + pr_err("Failed to enable core %d\n", core); + } +} + +void xlp_wakeup_secondary_cpus(void) +{ + /* + * 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(); +} |