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/*
* This file is part of the coreboot project.
*
* Copyright (c) 2015, The Linux Foundation. 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc.
*/
#include <boardid.h>
#include <boot/coreboot_tables.h>
#include <delay.h>
#include <device/device.h>
#include <gpio.h>
#include <soc/clock.h>
#include <soc/soc_services.h>
#include <soc/usb.h>
#include <symbols.h>
#include <vendorcode/google/chromeos/chromeos.h>
#include "mmu.h"
#define USB_ENABLE_GPIO 51
static void setup_usb(void)
{
#if !CONFIG_BOARD_VARIANT_AP148
gpio_tlmm_config_set(USB_ENABLE_GPIO, FUNC_SEL_GPIO,
GPIO_PULL_UP, GPIO_10MA, GPIO_ENABLE);
gpio_set(USB_ENABLE_GPIO, 1);
#endif
usb_clock_config();
setup_usb_host1();
}
#define TPM_RESET_GPIO 22
static void setup_tpm(void)
{
if (board_id() != BOARD_ID_PROTO_0)
return; /* Only proto0 have TPM reset connected to GPIO22 */
gpio_tlmm_config_set(TPM_RESET_GPIO, FUNC_SEL_GPIO, GPIO_PULL_UP,
GPIO_4MA, GPIO_ENABLE);
/*
* Generate a reset pulse. The spec calls for 80 us minimum, let's
* make it twice as long. If the output was driven low originally, the
* reset pulse will be even longer.
*/
gpio_set(TPM_RESET_GPIO, 0);
udelay(160);
gpio_set(TPM_RESET_GPIO, 1);
}
#define SW_RESET_GPIO 26
static void assert_sw_reset(void)
{
if (board_id() == BOARD_ID_PROTO_0)
return;
/*
* only proto0.2 and later care about this. We want to keep the
* ethernet switch in reset, otherwise it comes up in default
* (bridging) mode.
*/
gpio_tlmm_config_set(SW_RESET_GPIO, FUNC_SEL_GPIO,
GPIO_PULL_UP, GPIO_4MA, GPIO_ENABLE);
gpio_set(SW_RESET_GPIO, 1);
}
static void mainboard_init(device_t dev)
{
/* disable mmu and d-cache before setting up secure world.*/
dcache_mmu_disable();
start_tzbsp();
/* Setup mmu and d-cache again as non secure entries. */
setup_mmu(DRAM_INITIALIZED);
start_rpm();
setup_usb();
assert_sw_reset();
setup_tpm();
/* Functionally a 0-cost no-op if NAND is not present */
board_nand_init();
#if IS_ENABLED(CONFIG_CHROMEOS)
/* Copy WIFI calibration data into CBMEM. */
cbmem_add_vpd_calibration_data();
#endif
/*
* Make sure bootloader can issue sounds The frequency is calculated
* as "<frame_rate> * <bit_width> * <channels> * 4", i.e.
*
* 48000 * 2 * 16 * 4 = 6144000
*/
audio_clock_config(6144000);
}
static void mainboard_enable(device_t dev)
{
dev->ops->init = &mainboard_init;
}
struct chip_operations mainboard_ops = {
.name = "storm",
.enable_dev = mainboard_enable,
};
void lb_board(struct lb_header *header)
{
struct lb_range *dma;
dma = (struct lb_range *)lb_new_record(header);
dma->tag = LB_TAB_DMA;
dma->size = sizeof(*dma);
dma->range_start = (uintptr_t)_dma_coherent;
dma->range_size = _dma_coherent_size;
#if IS_ENABLED(CONFIG_CHROMEOS)
/* Retrieve the switch interface MAC addressses. */
lb_table_add_macs_from_vpd(header);
#endif
}
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