Add device tree support to arch/nios2. Signed-off-by: Ley Foon Tan <lftan@xxxxxxxxxx> --- arch/nios2/boot/dts/3c120_devboard.dts | 205 +++++++++++++++++++++++++++++++++ arch/nios2/boot/linked_dtb.S | 19 +++ arch/nios2/include/asm/prom.h | 26 +++++ arch/nios2/kernel/prom.c | 67 +++++++++++ arch/nios2/platform/platform.c | 69 +++++++++++ 5 files changed, 386 insertions(+) create mode 100644 arch/nios2/boot/dts/3c120_devboard.dts create mode 100644 arch/nios2/boot/linked_dtb.S create mode 100644 arch/nios2/include/asm/prom.h create mode 100644 arch/nios2/kernel/prom.c create mode 100644 arch/nios2/platform/platform.c diff --git a/arch/nios2/boot/dts/3c120_devboard.dts b/arch/nios2/boot/dts/3c120_devboard.dts new file mode 100644 index 0000000..cad29a9 --- /dev/null +++ b/arch/nios2/boot/dts/3c120_devboard.dts @@ -0,0 +1,205 @@ +/* + * Copyright (C) 2013 Altera Corporation + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + * This file is generated by sopc2dts. + */ + +/dts-v1/; + +/ { + model = "ALTR,qsys_ghrd_3c120"; + compatible = "ALTR,qsys_ghrd_3c120"; + #address-cells = < 1 >; + #size-cells = < 1 >; + + cpus { + #address-cells = < 1 >; + #size-cells = < 0 >; + + cpu: cpu@0x0 { + device_type = "cpu"; + compatible = "ALTR,nios2-1.0"; + reg = < 0x00000000 >; + interrupt-controller; + #interrupt-cells = < 1 >; + clock-frequency = < 125000000 >; + dcache-line-size = < 32 >; + icache-line-size = < 32 >; + dcache-size = < 32768 >; + icache-size = < 32768 >; + ALTR,implementation = "fast"; + ALTR,pid-num-bits = < 8 >; + ALTR,tlb-num-ways = < 16 >; + ALTR,tlb-num-entries = < 128 >; + ALTR,tlb-ptr-sz = < 7 >; + ALTR,has-div = < 1 >; + ALTR,has-mul = < 1 >; + ALTR,reset-addr = < 0xc2800000 >; + ALTR,fast-tlb-miss-addr = < 0xc7fff400 >; + ALTR,exception-addr = < 0xd0000020 >; + ALTR,has-initda = < 1 >; + ALTR,has-mmu = < 1 >; + }; //end cpu@0x0 (cpu) + }; //end cpus + + memory@0 { + device_type = "memory"; + reg = < 0x10000000 0x08000000 + 0x07FFF400 0x00000400 >; + }; //end memory@0 + + sopc@0 { + device_type = "soc"; + ranges; + #address-cells = < 1 >; + #size-cells = < 1 >; + compatible = "ALTR,avalon", "simple-bus"; + bus-frequency = < 125000000 >; + + pb_cpu_to_io: bridge@0x8000000 { + compatible = "simple-bus"; + reg = < 0x08000000 0x00800000 >; + #address-cells = < 1 >; + #size-cells = < 1 >; + ranges = < 0x00400000 0x08400000 0x00000020 + 0x00004D40 0x08004D40 0x00000008 + 0x00004D50 0x08004D50 0x00000008 + 0x00004000 0x08004000 0x00000400 + 0x00004400 0x08004400 0x00000040 + 0x00004800 0x08004800 0x00000040 + 0x00002000 0x08002000 0x00002000 + 0x00004C80 0x08004C80 0x00000020 + 0x00004CC0 0x08004CC0 0x00000010 + 0x00004CE0 0x08004CE0 0x00000010 + 0x00004D00 0x08004D00 0x00000010 >; + + timer_1ms: timer@0x400000 { + compatible = "ALTR,timer-1.0"; + reg = < 0x00400000 0x00000020 >; + interrupt-parent = < &cpu >; + interrupts = < 11 >; + clock-frequency = < 125000000 >; + }; //end timer@0x400000 (timer_1ms) + + sysid: sysid@0x4d40 { + compatible = "ALTR,sysid-1.0"; + reg = < 0x00004D40 0x00000008 >; + id = < 0 >; + timestamp = < 1364882880 >; + }; //end sysid@0x4d40 (sysid) + + jtag_uart: serial@0x4d50 { + compatible = "ALTR,juart-1.0"; + reg = < 0x00004D50 0x00000008 >; + interrupt-parent = < &cpu >; + interrupts = < 1 >; + }; //end serial@0x4d50 (jtag_uart) + + tse_mac: ethernet@0x4000 { + compatible = "ALTR,tse-1.0"; + reg = < 0x00004000 0x00000400 + 0x00004400 0x00000040 + 0x00004800 0x00000040 + 0x00002000 0x00002000 >; + reg-names = "control_port", "rx_csr", "tx_csr", "s1"; + interrupt-parent = < &cpu >; + interrupts = < 2 3 >; + interrupt-names = "rx_irq", "tx_irq"; + rx-fifo-depth = < 8192 >; + tx-fifo-depth = < 8192 >; + address-bits = < 48 >; + max-frame-size = < 1518 >; + local-mac-address = [ 02 00 00 00 00 00 ]; + phy-mode = "rgmii-id"; + ALTR,mii-id = < 0 >; + phy-handle = < &phy0 >; + tse_mac_mdio: mdio { + compatible = "altr,tse-mdio"; + #address-cells = < 1 >; + #size-cells = < 0 >; + phy0: ethernet-phy@18 { + reg = < 18 >; + device_type = "ethernet-phy"; + }; + }; + }; //end ethernet@0x4000 (tse_mac) + + uart: serial@0x4c80 { + compatible = "ALTR,uart-1.0"; + reg = < 0x00004C80 0x00000020 >; + interrupt-parent = < &cpu >; + interrupts = < 10 >; + current-speed = < 115200 >; + clock-frequency = < 62500000 >; + }; //end serial@0x4c80 (uart) + + user_led_pio_8out: gpio@0x4cc0 { + compatible = "ALTR,pio-1.0"; + reg = < 0x00004CC0 0x00000010 >; + width = < 8 >; + resetvalue = < 255 >; + #gpio-cells = < 2 >; + gpio-controller; + }; //end gpio@0x4cc0 (user_led_pio_8out) + + user_dipsw_pio_8in: gpio@0x4ce0 { + compatible = "ALTR,pio-1.0"; + reg = < 0x00004CE0 0x00000010 >; + interrupt-parent = < &cpu >; + interrupts = < 8 >; + width = < 8 >; + resetvalue = < 0 >; + edge_type = < 2 >; + level_trigger = < 0 >; + altr,interrupt_type = < 3 >; + #gpio-cells = < 2 >; + gpio-controller; + }; //end gpio@0x4ce0 (user_dipsw_pio_8in) + + user_pb_pio_4in: gpio@0x4d00 { + compatible = "ALTR,pio-1.0"; + reg = < 0x00004D00 0x00000010 >; + interrupt-parent = < &cpu >; + interrupts = < 9 >; + width = < 4 >; + resetvalue = < 0 >; + edge_type = < 2 >; + level_trigger = < 0 >; + altr,interrupt_type = < 3 >; + #gpio-cells = < 2 >; + gpio-controller; + }; //end gpio@0x4d00 (user_pb_pio_4in) + }; //end bridge@0x8000000 (pb_cpu_to_io) + + cfi_flash_64m: flash@0x0 { + compatible = "cfi-flash"; + reg = < 0x00000000 0x04000000 >; + bank-width = < 2 >; + device-width = < 1 >; + #address-cells = < 1 >; + #size-cells = < 1 >; + + partition@800000 { + reg = < 0x00800000 0x01E00000 >; + label = "JFFS2 Filesystem"; + }; //end partition@800000 + }; //end flash@0x0 (cfi_flash_64m) + }; //end sopc@0 + + chosen { + bootargs = "debug console=ttyJ0,115200"; + }; //end chosen +}; //end / diff --git a/arch/nios2/boot/linked_dtb.S b/arch/nios2/boot/linked_dtb.S new file mode 100644 index 0000000..071f922db338e2cb4064bc77bf346f50e584d04f --- /dev/null +++ b/arch/nios2/boot/linked_dtb.S @@ -0,0 +1,19 @@ +/* + * Copyright (C) 2011 Thomas Chou <thomas@xxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ +.section .dtb.init.rodata,"a" +.incbin "arch/nios2/boot/system.dtb" diff --git a/arch/nios2/include/asm/prom.h b/arch/nios2/include/asm/prom.h new file mode 100644 index 0000000..7a71e4c50a42134ffceabd233f83b5d1c48917c1 --- /dev/null +++ b/arch/nios2/include/asm/prom.h @@ -0,0 +1,26 @@ +/* + * Copyright (C) 2010 Thomas Chou <thomas@xxxxxxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#ifndef _ASM_NIOS2_PROM_H +#define _ASM_NIOS2_PROM_H + +extern int __dtb_start; + +extern unsigned long early_altera_uart_or_juart_console(void); + +#endif /* _ASM_NIOS2_PROM_H */ diff --git a/arch/nios2/kernel/prom.c b/arch/nios2/kernel/prom.c new file mode 100644 index 0000000..a2d8308b939c33496e1416253b37c018d88c0c7f --- /dev/null +++ b/arch/nios2/kernel/prom.c @@ -0,0 +1,67 @@ +/* + * Device tree support + * + * Copyright (C) 2013 Altera Corporation + * Copyright (C) 2010 Thomas Chou <thomas@xxxxxxxxxxxxx> + * + * Based on MIPS support for CONFIG_OF device tree support + * + * Copyright (C) 2010 Cisco Systems Inc. <dediao@xxxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + * + */ + +#include <linux/init.h> +#include <linux/types.h> +#include <linux/bootmem.h> +#include <linux/of.h> +#include <linux/of_fdt.h> +#include <linux/io.h> + +#include <asm/prom.h> +#include <asm/sections.h> + +void __init early_init_dt_add_memory_arch(u64 base, u64 size) +{ + u64 kernel_start = (u64)virt_to_phys(_text); + + if (!memory_size && + (kernel_start >= base) && (kernel_start < (base + size))) + memory_size = size; + + return; +} + +void * __init early_init_dt_alloc_memory_arch(u64 size, u64 align) +{ + return __alloc_bootmem(size, align, __pa(MAX_DMA_ADDRESS)); +} + +void __init early_init_devtree(void *params) +{ + if (params && be32_to_cpup((__be32 *)params) == OF_DT_HEADER) + initial_boot_params = params; +#if defined(CONFIG_NIOS2_DTB_AT_PHYS_ADDR) + else if (be32_to_cpup((__be32 *)CONFIG_NIOS2_DTB_PHYS_ADDR) == + OF_DT_HEADER) + initial_boot_params = (void *)CONFIG_NIOS2_DTB_PHYS_ADDR; +#endif + else if (be32_to_cpu((__be32)__dtb_start) == OF_DT_HEADER) + initial_boot_params = (void *)&__dtb_start; + else + return; + + early_init_dt_scan(initial_boot_params); +} diff --git a/arch/nios2/platform/platform.c b/arch/nios2/platform/platform.c new file mode 100644 index 0000000..2e5b8f624f4d593a2d9bf544ea7cc06b076b44b4 --- /dev/null +++ b/arch/nios2/platform/platform.c @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2013 Altera Corporation + * Copyright (C) 2011 Thomas Chou + * Copyright (C) 2011 Walter Goossens + * + * This file is subject to the terms and conditions of the GNU General + * Public License. See the file COPYING in the main directory of this + * archive for more details. + */ + +#include <linux/init.h> +#include <linux/of_platform.h> +#include <linux/of_address.h> +#include <linux/of_fdt.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/sys_soc.h> +#include <linux/io.h> + +#define NIOS2_ID_DEFAULT (0x1) +#define NIOS2_REVISION_DEFAULT (0x1) + +static struct of_device_id altera_of_bus_ids[] __initdata = { + { .compatible = "simple-bus", }, + { .compatible = "altr,avalon", }, + {} +}; + +static void __init nios2_soc_device_init(void) +{ + struct soc_device *soc_dev; + struct soc_device_attribute *soc_dev_attr; + const char *machine; + + machine = of_flat_dt_get_machine_name(); + if (!machine) + return; + + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL); + if (!soc_dev_attr) + return; + + soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "%u", NIOS2_ID_DEFAULT); + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "%d", + NIOS2_REVISION_DEFAULT); + soc_dev_attr->machine = kasprintf(GFP_KERNEL, "%s", machine); + soc_dev_attr->family = "Nios II"; + + soc_dev = soc_device_register(soc_dev_attr); + if (IS_ERR_OR_NULL(soc_dev)) { + kfree(soc_dev_attr->soc_id); + kfree(soc_dev_attr->machine); + kfree(soc_dev_attr->revision); + kfree(soc_dev_attr); + return; + } + + return; +} + +static int __init nios2_device_probe(void) +{ + nios2_soc_device_init(); + + of_platform_bus_probe(NULL, altera_of_bus_ids, NULL); + return 0; +} + +device_initcall(nios2_device_probe); -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
