diff options
author | Simon Glass <sjg@chromium.org> | 2019-12-09 03:40:10 +0300 |
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committer | Bin Meng <bmeng.cn@gmail.com> | 2019-12-15 06:44:28 +0300 |
commit | 40fb08e9172c88e5399655cb4b098e0af83ff7dd (patch) | |
tree | 40c0d98ce95c7080056ba41b15d85d84edecfda3 /arch/x86/cpu/apollolake/pch.c | |
parent | 8bd5dcd89581018f163e3424c8d2a3268ca79544 (diff) | |
download | u-boot-40fb08e9172c88e5399655cb4b098e0af83ff7dd.tar.xz |
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>
Diffstat (limited to 'arch/x86/cpu/apollolake/pch.c')
-rw-r--r-- | arch/x86/cpu/apollolake/pch.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/x86/cpu/apollolake/pch.c b/arch/x86/cpu/apollolake/pch.c new file mode 100644 index 0000000000..1a5a985221 --- /dev/null +++ b/arch/x86/cpu/apollolake/pch.c @@ -0,0 +1,36 @@ +// 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, +}; |