diff options
author | Furquan Shaikh <furquan@google.com> | 2020-05-04 23:38:53 -0700 |
---|---|---|
committer | Furquan Shaikh <furquan@google.com> | 2020-05-12 20:05:55 +0000 |
commit | f318e03495e9a1d43d64516d77a6ae5f2c4d6999 (patch) | |
tree | 88084526ebbbceb902d0d0e32592425b072cac56 /src/soc/amd/common/block/include/amdblocks | |
parent | dd5264612ae8145c8c8e38d2ff3fb7e47de8e4b2 (diff) | |
download | coreboot-f318e03495e9a1d43d64516d77a6ae5f2c4d6999.tar.xz |
soc/amd/common/block/lpc: Add helpers for managing eSPI decode
This change adds the following helper functions for eSPI decode:
1. espi_open_io_window() - Open generic IO window decoded by eSPI
2. espi_open_mmio_window() - Open generic MMIO window decoded by eSPI
3. espi_configure_decodes() - Configures standard and generic I/O
windows using the espi configuration provided by mainboard in device tree.
BUG=b:153675913,b:154445472
Change-Id: Idb49ef0477280eb46ecad65131d4cd7357618941
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/41073
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/soc/amd/common/block/include/amdblocks')
-rw-r--r-- | src/soc/amd/common/block/include/amdblocks/chip.h | 4 | ||||
-rw-r--r-- | src/soc/amd/common/block/include/amdblocks/espi.h | 31 |
2 files changed, 35 insertions, 0 deletions
diff --git a/src/soc/amd/common/block/include/amdblocks/chip.h b/src/soc/amd/common/block/include/amdblocks/chip.h index 6e3c973c97..b0348115e9 100644 --- a/src/soc/amd/common/block/include/amdblocks/chip.h +++ b/src/soc/amd/common/block/include/amdblocks/chip.h @@ -4,6 +4,7 @@ #ifndef __AMDBLOCKS_CHIP_H__ #define __AMDBLOCKS_CHIP_H__ +#include <amdblocks/espi.h> #include <amdblocks/spi.h> struct soc_amd_common_config { @@ -17,6 +18,9 @@ struct soc_amd_common_config { * TPM speed - 66MHz */ struct spi_config spi_config; + + /* eSPI configuration */ + struct espi_config espi_config; }; /* diff --git a/src/soc/amd/common/block/include/amdblocks/espi.h b/src/soc/amd/common/block/include/amdblocks/espi.h index 82410e58d3..53cc5f9f3f 100644 --- a/src/soc/amd/common/block/include/amdblocks/espi.h +++ b/src/soc/amd/common/block/include/amdblocks/espi.h @@ -4,6 +4,9 @@ #ifndef __AMDBLOCKS_ESPI_H__ #define __AMDBLOCKS_ESPI_H__ +#include <stdint.h> +#include <stddef.h> + /* eSPI MMIO base lives at an offset of 0x10000 from the address in SPI BAR. */ #define ESPI_OFFSET_FROM_BAR 0x10000 @@ -24,4 +27,32 @@ #define ESPI_GENERIC_MMIO_WIN_COUNT 4 #define ESPI_GENERIC_MMIO_MAX_WIN_SIZE 0x10000 +struct espi_config { + /* Bitmap for standard IO decodes. Use ESPI_DECODE_IO_* above. */ + uint32_t std_io_decode_bitmap; + + struct { + uint16_t base; + size_t size; + } generic_io_range[ESPI_GENERIC_IO_WIN_COUNT]; +}; + +/* + * Open I/O window using the provided base and size. + * Return value: 0 = success, -1 = error. + */ +int espi_open_io_window(uint16_t base, size_t size); + +/* + * Open MMIO window using the provided base and size. + * Return value: 0 = success, -1 = error. + */ +int espi_open_mmio_window(uint32_t base, size_t size); + +/* + * Configure generic and standard I/O decode windows using the espi_config structure settings + * provided by mainboard in device tree. + */ +void espi_configure_decodes(void); + #endif /* __AMDBLOCKS_ESPI_H__ */ |