diff options
| author | Furquan Shaikh <furquan@google.com> | 2020-05-04 22:54:22 -0700 |
|---|---|---|
| committer | Furquan Shaikh <furquan@google.com> | 2020-05-12 20:05:43 +0000 |
| commit | dd5264612ae8145c8c8e38d2ff3fb7e47de8e4b2 (patch) | |
| tree | bf67f00d4c4aade3a97b06e0d277ecde3ef18af7 /src/soc | |
| parent | 5cc41f2a6b6aeca1500fe9f55af5858d1c7e4e38 (diff) | |
soc/amd/common/block: Add header file for eSPI register definitions
This change adds eSPI register definitions for I/O and MMIO decode
using eSPI on AMD SoCs. Additionally, it also adds a macro to define
the offset of ESPI MMIO base from SPI MMIO base.
BUG=b:153675913
Change-Id: Ifb70ae0c63cc823334a1d851faf4dda6d1c1fc1a
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41072
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/amd/common/block/include/amdblocks/espi.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/espi.h b/src/soc/amd/common/block/include/amdblocks/espi.h new file mode 100644 index 0000000000..82410e58d3 --- /dev/null +++ b/src/soc/amd/common/block/include/amdblocks/espi.h @@ -0,0 +1,27 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* This file is part of the coreboot project. */ + +#ifndef __AMDBLOCKS_ESPI_H__ +#define __AMDBLOCKS_ESPI_H__ + +/* eSPI MMIO base lives at an offset of 0x10000 from the address in SPI BAR. */ +#define ESPI_OFFSET_FROM_BAR 0x10000 + +#define ESPI_DECODE 0x40 +#define ESPI_DECODE_MMIO_RANGE_EN(range) (1 << (((range) & 3) + 12)) +#define ESPI_DECODE_IO_RANGE_EN(range) (1 << (((range) & 3) + 8)) +#define ESPI_DECODE_IO_0x80_EN (1 << 2) +#define ESPI_DECODE_IO_0X60_0X64_EN (1 << 1) +#define ESPI_DECODE_IO_0X2E_0X2F_EN (1 << 0) + +#define ESPI_IO_RANGE_BASE(range) (0x44 + ((range) & 3) * 2) +#define ESPI_IO_RANGE_SIZE(range) (0x4c + ((range) & 3)) +#define ESPI_MMIO_RANGE_BASE(range) (0x50 + ((range) & 3) * 4) +#define ESPI_MMIO_RANGE_SIZE(range) (0x60 + ((range) & 3) * 2) + +#define ESPI_GENERIC_IO_WIN_COUNT 4 +#define ESPI_GENERIC_IO_MAX_WIN_SIZE 0x100 +#define ESPI_GENERIC_MMIO_WIN_COUNT 4 +#define ESPI_GENERIC_MMIO_MAX_WIN_SIZE 0x10000 + +#endif /* __AMDBLOCKS_ESPI_H__ */ |