diff options
| -rw-r--r-- | src/mainboard/lowrisc/Kconfig | 16 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/Kconfig.name | 2 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/Kconfig | 38 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/Kconfig.name | 2 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/Makefile.inc | 28 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/board_info.txt | 3 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/devicetree.cb | 20 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/mainboard.c | 31 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/memlayout.ld | 31 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/rom_media.c | 30 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/romstage.c | 23 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/uart.c | 40 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/util.c | 103 |
13 files changed, 367 insertions, 0 deletions
diff --git a/src/mainboard/lowrisc/Kconfig b/src/mainboard/lowrisc/Kconfig new file mode 100644 index 0000000000..ba0fbe7499 --- /dev/null +++ b/src/mainboard/lowrisc/Kconfig @@ -0,0 +1,16 @@ +if VENDOR_LOWRISC + +choice + prompt "Mainboard model" + +source "src/mainboard/lowrisc/*/Kconfig.name" + +endchoice + +source "src/mainboard/lowrisc/*/Kconfig" + +config MAINBOARD_VENDOR + string + default "lowrisc" + +endif # VENDOR_LOWRISC diff --git a/src/mainboard/lowrisc/Kconfig.name b/src/mainboard/lowrisc/Kconfig.name new file mode 100644 index 0000000000..4c992fc2bb --- /dev/null +++ b/src/mainboard/lowrisc/Kconfig.name @@ -0,0 +1,2 @@ +config VENDOR_LOWRISC + bool "lowrisc" diff --git a/src/mainboard/lowrisc/nexys4ddr/Kconfig b/src/mainboard/lowrisc/nexys4ddr/Kconfig new file mode 100644 index 0000000000..f0a3637d1c --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/Kconfig @@ -0,0 +1,38 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2016 Google Inc. +## +## This software is licensed under the terms of the GNU General Public +## License version 2, as published by the Free Software Foundation, and +## may be copied, distributed, and modified under those terms. +## +## 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. + +if BOARD_LOWRISC_NEXYS4DDR + +config BOARD_SPECIFIC_OPTIONS # dummy + def_bool y + select SOC_LOWRISC_LOWRISC + select BOARD_ROMSIZE_KB_4096 + select DRIVERS_UART_8250MEM + select BOOT_DEVICE_NOT_SPI_FLASH + select UART_OVERRIDE_REFCLK + select UART_OVERRIDE_INPUT_CLOCK_DIVIDER + +config MAINBOARD_DIR + string + default lowrisc/nexys4ddr + +config MAINBOARD_PART_NUMBER + string + default "LOWRISC NEXYS4DDR" + +config MAX_CPUS + int + default 1 + +endif # BOARD_LOWRISC_NEXYS4DDR diff --git a/src/mainboard/lowrisc/nexys4ddr/Kconfig.name b/src/mainboard/lowrisc/nexys4ddr/Kconfig.name new file mode 100644 index 0000000000..f99b3cc649 --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/Kconfig.name @@ -0,0 +1,2 @@ +config BOARD_LOWRISC_NEXYS4DDR + bool "nexys4ddr" diff --git a/src/mainboard/lowrisc/nexys4ddr/Makefile.inc b/src/mainboard/lowrisc/nexys4ddr/Makefile.inc new file mode 100644 index 0000000000..69519b189e --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/Makefile.inc @@ -0,0 +1,28 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2016 Google Inc. +## +## This software is licensed under the terms of the GNU General Public +## License version 2, as published by the Free Software Foundation, and +## may be copied, distributed, and modified under those terms. +## +## 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. + +bootblock-y += uart.c +bootblock-y += util.c +bootblock-y += rom_media.c +romstage-y += romstage.c +romstage-y += uart.c +romstage-y += util.c +romstage-y += rom_media.c +ramstage-y += uart.c +ramstage-y += util.c +ramstage-y += rom_media.c + +bootblock-y += memlayout.ld +romstage-y += memlayout.ld +ramstage-y += memlayout.ld diff --git a/src/mainboard/lowrisc/nexys4ddr/board_info.txt b/src/mainboard/lowrisc/nexys4ddr/board_info.txt new file mode 100644 index 0000000000..a305030ddb --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/board_info.txt @@ -0,0 +1,3 @@ +Board name: lowrisc nexys4ddr +Category: eval +Board URL: https://www.google.com/search?q=Tutorial+for+the+debug+preview+of+lowRISC&oq=Tutorial+for+the+debug+preview+of+lowRISC&btnI diff --git a/src/mainboard/lowrisc/nexys4ddr/devicetree.cb b/src/mainboard/lowrisc/nexys4ddr/devicetree.cb new file mode 100644 index 0000000000..e857276d5f --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/devicetree.cb @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## Copyright (C) 2016 Google, Inc. +## +## This software is licensed under the terms of the GNU General Public +## License version 2, as published by the Free Software Foundation, and +## may be copied, distributed, and modified under those terms. +## +## 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. + +chip soc/ucb/riscv + device cpu_cluster 0 on end + chip drivers/generic/generic # I2C0 controller + device i2c 6 on end # Fake component for testing + end +end diff --git a/src/mainboard/lowrisc/nexys4ddr/mainboard.c b/src/mainboard/lowrisc/nexys4ddr/mainboard.c new file mode 100644 index 0000000000..b2ce39886c --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/mainboard.c @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + */ + +#include <device/device.h> +#include <symbols.h> + +static void mainboard_enable(device_t dev) +{ + /* + * TODO: Get this size from the hardware-supplied configuration string. + */ + const size_t ram_size = 1*GiB; + + ram_resource(dev, 0, (uintptr_t)_dram / KiB, ram_size / KiB); +} + +struct chip_operations mainboard_ops = { + .enable_dev = mainboard_enable, +}; diff --git a/src/mainboard/lowrisc/nexys4ddr/memlayout.ld b/src/mainboard/lowrisc/nexys4ddr/memlayout.ld new file mode 100644 index 0000000000..0348c47366 --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/memlayout.ld @@ -0,0 +1,31 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * 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; version 2 of the License. + * + * 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. + */ + +#include <memlayout.h> + +#include <arch/header.ld> + +#define START 0x80000000 + +SECTIONS +{ + DRAM_START(START) + BOOTBLOCK(START, 64K) + STACK(START + 8M, 64K) + ROMSTAGE(START + 8M + 64K, 128K) + PRERAM_CBMEM_CONSOLE(START + 8M + 192k, 8K) + PAGETABLES(START + 8M + 200K, 56K) + RAMSTAGE(START + 8M + 256K, 256K) +} diff --git a/src/mainboard/lowrisc/nexys4ddr/rom_media.c b/src/mainboard/lowrisc/nexys4ddr/rom_media.c new file mode 100644 index 0000000000..7d4ed00fe1 --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/rom_media.c @@ -0,0 +1,30 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2015 Google Inc. + * Copyright 2016 Jonathan Neuschäfer <j.neuschaefer@gmx.net> + * + * 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; version 2 of + * the License. + * + * 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. + */ +#include <boot_device.h> +#include <symbols.h> + +/* + * _dram is the start of RAM. We currently need to load coreboot.rom into + * RAM. The actual "rom" code on the FPGAs is in a block ram. + */ +static const struct mem_region_device boot_dev = + MEM_REGION_DEV_RO_INIT(_dram, CONFIG_ROM_SIZE); + +const struct region_device *boot_device_ro(void) +{ + return &boot_dev.rdev; +} diff --git a/src/mainboard/lowrisc/nexys4ddr/romstage.c b/src/mainboard/lowrisc/nexys4ddr/romstage.c new file mode 100644 index 0000000000..1509efb0f1 --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/romstage.c @@ -0,0 +1,23 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2016 Google, Inc. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * 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. + */ + +#include <program_loading.h> +#include <console/console.h> + +void main(void) +{ + console_init(); + run_ramstage(); +} diff --git a/src/mainboard/lowrisc/nexys4ddr/uart.c b/src/mainboard/lowrisc/nexys4ddr/uart.c new file mode 100644 index 0000000000..e3c233f80b --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/uart.c @@ -0,0 +1,40 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * 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; version 2 of the License. + * + * 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. + */ + +#include <types.h> +#include <console/uart.h> +#include <arch/io.h> +#include <boot/coreboot_tables.h> +#include <spike_util.h> + +uintptr_t uart_platform_base(int idx) +{ + return (uintptr_t) 0x42000000; +} + +/* these are currently not quite right but they are here for reference + * and will be fixed when lowrisc gives us a standard clock + * and set of values. */ +// divisor = clk_freq / (16 * Baud) +unsigned int uart_input_clock_divider(void) +{ + return (25 * 1000 * 1000u / (16u * 115200u)) % 0x100; +} + +// System clock 25 MHz, 115200 baud rate +unsigned int uart_platform_refclk(void) +{ + return (25 * 1000 * 1000u / (16u * 115200u)) >> 8; +} diff --git a/src/mainboard/lowrisc/nexys4ddr/util.c b/src/mainboard/lowrisc/nexys4ddr/util.c new file mode 100644 index 0000000000..32cdb6d573 --- /dev/null +++ b/src/mainboard/lowrisc/nexys4ddr/util.c @@ -0,0 +1,103 @@ +/* + * Copyright (c) 2013, The Regents of the University of California (Regents). + * All Rights Reserved. + * + * 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. + * 3. Neither the name of the Regents nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, + * INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING + * LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS + * DOCUMENTATION, EVEN IF REGENTS HAS BEEN ADVISED OF THE POSSIBILITY + * OF SUCH DAMAGE. + * + * REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE. THE SOFTWARE AND ACCOMPANYING + * DOCUMENTATION, IF ANY, PROVIDED HEREUNDER IS PROVIDED "AS + * IS". REGENTS HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, + * UPDATES, ENHANCEMENTS, OR MODIFICATIONS. + */ + +#include <arch/barrier.h> +#include <arch/errno.h> +#include <atomic.h> +#include <console/console.h> +#include <spike_util.h> +#include <string.h> +#include <vm.h> + +uintptr_t mcall_query_memory(uintptr_t id, memory_block_info *info) +{ + if (id == 0) { + mprv_write_ulong(&info->base, 2U*GiB); + + /* TODO: Return the correct value */ + mprv_write_ulong(&info->size, 1*GiB); + return 0; + } + + return -1; +} + +uintptr_t mcall_send_ipi(uintptr_t recipient) +{ + die("mcall_send_ipi is currently not implemented"); + return 0; +} + +uintptr_t mcall_clear_ipi(void) +{ + // only clear SSIP if no other events are pending + if (HLS()->device_response_queue_head == NULL) { + clear_csr(mip, MIP_SSIP); + /* Ensure the other hart sees it. */ + mb(); + } + + return atomic_swap(&HLS()->ipi_pending, 0); +} + +uintptr_t mcall_shutdown(void) +{ + die("mcall_shutdown is currently not implemented"); + return 0; +} + +uintptr_t mcall_set_timer(unsigned long long when) +{ + printk(BIOS_DEBUG, "mcall_set_timer is currently not implemented, ignoring\n"); + return 0; +} + +uintptr_t mcall_dev_req(sbi_device_message *m) +{ + die("mcall_dev_req is currently not implemented"); + return 0; +} + +uintptr_t mcall_dev_resp(void) +{ + die("mcall_dev_resp is currently not implemented"); + return 0; +} + +void hls_init(uint32_t hart_id) +{ + memset(HLS(), 0, sizeof(*HLS())); + HLS()->hart_id = hart_id; +} + +uintptr_t mcall_console_putchar(uint8_t ch) +{ + do_putchar(ch); + return 0; +} |