| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2011 The ChromiumOS Authors. All rights reserved. |
| * Copyright 2014 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 <arch/io.h> |
| #include <arch/cache.h> |
| #include <cpu/cpu.h> |
| #include <bootmode.h> |
| #include <bootstate.h> |
| #include <cbmem.h> |
| #include <console/console.h> |
| #include <device/device.h> |
| #include <soc/nvidia/tegra/dc.h> |
| #include <soc/addressmap.h> |
| #include <soc/clock.h> |
| #include <soc/cpu.h> |
| #include <soc/mc.h> |
| #include <soc/nvidia/tegra/apbmisc.h> |
| #include <string.h> |
| #include <timer.h> |
| #include <soc/sdram.h> |
| #include <soc/sdram_configs.h> |
| |
| #include "chip.h" |
| |
| static void soc_read_resources(device_t dev) |
| { |
| unsigned long index = 0; |
| int i; uintptr_t begin, end; |
| size_t size; |
| |
| for (i = 0; i < CARVEOUT_NUM; i++) { |
| carveout_range(i, &begin, &size); |
| if (size == 0) |
| continue; |
| reserved_ram_resource(dev, index++, begin * KiB, size * KiB); |
| } |
| |
| memory_in_range_below_4gb(&begin, &end); |
| size = end - begin; |
| ram_resource(dev, index++, begin * KiB, size * KiB); |
| |
| memory_in_range_above_4gb(&begin, &end); |
| size = end - begin; |
| ram_resource(dev, index++, begin * KiB, size * KiB); |
| } |
| |
| static struct device_operations soc_ops = { |
| .read_resources = soc_read_resources, |
| .set_resources = DEVICE_NOOP, |
| .enable_resources = DEVICE_NOOP, |
| .init = DEVICE_NOOP, |
| .scan_bus = NULL, |
| }; |
| |
| static void enable_tegra210_dev(device_t dev) |
| { |
| if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) |
| dev->ops = &soc_ops; |
| |
| if (!IS_ENABLED(CONFIG_MAINBOARD_DO_NATIVE_VGA_INIT)) |
| return; |
| |
| if (display_init_required()) |
| display_startup(dev); |
| else |
| printk(BIOS_INFO, "Skipping display init.\n"); |
| } |
| |
| static void tegra210_init(void *chip_info) |
| { |
| struct tegra_revision rev; |
| |
| tegra_revision_info(&rev); |
| |
| printk(BIOS_INFO, "chip %x rev %02x.%x\n", |
| rev.chip_id, rev.major, rev.minor); |
| |
| /* Save sdram parameters to scratch regs to be used in LP0 resume */ |
| sdram_lp0_save_params(get_sdram_config()); |
| printk(BIOS_INFO, "sdram params saved.\n"); |
| } |
| |
| struct chip_operations soc_nvidia_tegra210_ops = { |
| CHIP_NAME("SOC Nvidia Tegra210") |
| .init = tegra210_init, |
| .enable_dev = enable_tegra210_dev, |
| }; |
| |
| static void enable_plld(void *unused) |
| { |
| /* |
| * Configure a conservative 300MHz clock for PLLD. The kernel cannot |
| * handle PLLD not being configured so enable PLLD unconditionally |
| * with a default clock rate. |
| */ |
| clock_configure_plld(300 * MHz); |
| } |
| |
| /* |
| * The PLLD being enabled is done at BS_DEV_INIT time because mainboard_init() |
| * is the first thing called. This ensures PLLD is up and functional before |
| * anything that mainboard can do that implicitly relies on PLLD. |
| */ |
| BOOT_STATE_INIT_ENTRY(BS_DEV_INIT, BS_ON_ENTRY, enable_plld, NULL); |