diff options
Diffstat (limited to 'src/soc/intel/common/block/fast_spi/Kconfig')
| -rw-r--r-- | src/soc/intel/common/block/fast_spi/Kconfig | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/src/soc/intel/common/block/fast_spi/Kconfig b/src/soc/intel/common/block/fast_spi/Kconfig index 936927219d..eb2373ca8b 100644 --- a/src/soc/intel/common/block/fast_spi/Kconfig +++ b/src/soc/intel/common/block/fast_spi/Kconfig @@ -11,3 +11,48 @@ config FAST_SPI_DISABLE_WRITE_STATUS default y help Disable the write status SPI opcode in Intel Fast SPI block. + +config FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW + bool + depends on SOC_INTEL_COMMON_BLOCK_FAST_SPI + help + Fast SPI controller on the platform supports additional + window for memory mapping BIOS region (region 1) on the SPI + flash beyond the standard limit of 16MiB. Depending upon the + size of the SPI flash part used by the mainboard, two decode + windows will be enabled: + 1. Fixed decode window up to a maximum size of 16MiB under + 4G boundary. + 2. Extended decode window up to a maximum size provided by + the platform to map the rest of the BIOS region. + SoC selecting this config is expected to provide the base and + maximum size of the extended window in the host address space + using configs EXT_BIOS_WIN_BASE and EXT_BIOS_WIN_SIZE. + +config EXT_BIOS_WIN_BASE + hex + help + If an additional window for mapping BIOS region greater than + 16MiB is supported, then this config is used to provide the + base address reserved for the mapping. Since the mapping is + done at the top of the window, depending upon the size of the + BIOS region, the actual base address configured in the fast + SPI controller can be higher at runtime. + +config EXT_BIOS_WIN_SIZE + hex + help + Maximum size of the extended window reserved for mapping BIOS + region greater than 16MiB. The actual mapped window might be + smaller depending upon the size of the BIOS region. + +if FAST_SPI_SUPPORTS_EXT_BIOS_WINDOW + +# Disable X86_TOP4G_BOOTMEDIA_MAP because the fast SPI controller +# driver provides a custom boot media device when multiple decode +# windows are used for the BIOS region. + +config X86_TOP4G_BOOTMEDIA_MAP + default n + +endif |