diff options
| author | Simon Glass <sjg@chromium.org> | 2019-12-08 17:40:10 -0700 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2019-12-15 11:44:28 +0800 |
| commit | 40fb08e9172c88e5399655cb4b098e0af83ff7dd (patch) | |
| tree | 40c0d98ce95c7080056ba41b15d85d84edecfda3 /arch | |
| parent | 8bd5dcd89581018f163e3424c8d2a3268ca79544 (diff) | |
| download | u-boot-40fb08e9172c88e5399655cb4b098e0af83ff7dd.zip u-boot-40fb08e9172c88e5399655cb4b098e0af83ff7dd.tar.gz u-boot-40fb08e9172c88e5399655cb4b098e0af83ff7dd.tar.bz2 | |
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')
| -rw-r--r-- | arch/x86/cpu/apollolake/Makefile | 1 | ||||
| -rw-r--r-- | arch/x86/cpu/apollolake/pch.c | 36 | ||||
| -rw-r--r-- | arch/x86/include/asm/arch-apollolake/pch.h | 9 |
3 files changed, 46 insertions, 0 deletions
diff --git a/arch/x86/cpu/apollolake/Makefile b/arch/x86/cpu/apollolake/Makefile index 31045a0..36eefcb 100644 --- a/arch/x86/cpu/apollolake/Makefile +++ b/arch/x86/cpu/apollolake/Makefile @@ -7,5 +7,6 @@ obj-$(CONFIG_SPL_BUILD) += systemagent.o obj-y += hostbridge.o obj-y += itss.o obj-y += lpc.o +obj-y += pch.o obj-y += pmc.o obj-y += uart.o diff --git a/arch/x86/cpu/apollolake/pch.c b/arch/x86/cpu/apollolake/pch.c new file mode 100644 index 0000000..1a5a985 --- /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, +}; diff --git a/arch/x86/include/asm/arch-apollolake/pch.h b/arch/x86/include/asm/arch-apollolake/pch.h new file mode 100644 index 0000000..bf3e167 --- /dev/null +++ b/arch/x86/include/asm/arch-apollolake/pch.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright 2019 Google LLC + */ + +#ifndef _ASM_ARCH_PCH_H +#define _ASM_ARCH_PCH_H + +#endif /* _ASM_ARCH_PCH_H */ |