u-boot-brain/arch/x86/cpu/apollolake/pch.c
Simon Glass 40fb08e917 x86: apl: Add PCH driver
Add a driver for the Apollo Lake Platform Controller Hub. It does not have
any functionality and is just a placeholder for now.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
2019-12-15 11:44:28 +08:00

37 lines
668 B
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright 2019 Google LLC
*/
#include <common.h>
#include <dm.h>
#include <pch.h>
#include <spl.h>
#include <asm/lpc_common.h>
#define BIOS_CTRL 0xdc
static int apl_set_spi_protect(struct udevice *dev, bool protect)
{
if (spl_phase() == PHASE_SPL)
return lpc_set_spi_protect(dev, BIOS_CTRL, protect);
return 0;
}
static const struct pch_ops apl_pch_ops = {
.set_spi_protect = apl_set_spi_protect,
};
static const struct udevice_id apl_pch_ids[] = {
{ .compatible = "intel,apl-pch" },
{ }
};
U_BOOT_DRIVER(apl_pch) = {
.name = "apl_pch",
.id = UCLASS_PCH,
.of_match = apl_pch_ids,
.ops = &apl_pch_ops,
};