08a4613219
The caching policy for romstage was previously using a 32KiB of cache-as-ram for both the MRC wrapper and the romstage stack/data. It also used a 32KiB code cache region. The BWG's limitations for the code and data region before memory is up was wrong. It consists of a 16-way set associative 1MiB cache. As long as enough addresses are not read there isn't a risk of evicting the data/stack. Now create a 64KiB cache-as-ram region split evenly between romstage and the MRC wrapper. Additionally cache the memory just below 4GiB in CBFS size. This will cover any code and read-only data needed. BUG=chrome-os-partner:22858 BRANCH=None TEST=Built and booted quickly with corresponding changes to MRC warpper. CQ-DEPEND=CL:*146175 Change-Id: I021cecb886a9c0622005edc389136d22905d4520 Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/172150 Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Reviewed-on: http://review.coreboot.org/4868 Tested-by: build bot (Jenkins) Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
229 lines
5.7 KiB
Text
229 lines
5.7 KiB
Text
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config SOC_INTEL_BAYTRAIL
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bool
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help
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Bay Trail M/D part support.
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if SOC_INTEL_BAYTRAIL
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config CPU_SPECIFIC_OPTIONS
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def_bool y
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select CACHE_MRC_SETTINGS
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select CACHE_ROM
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select CAR_MIGRATION
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select COLLECT_TIMESTAMPS
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select CPU_MICROCODE_IN_CBFS
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select DYNAMIC_CBMEM
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select HAVE_SMI_HANDLER
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select MMCONF_SUPPORT
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select MMCONF_SUPPORT_DEFAULT
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select RELOCATABLE_MODULES
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select SMM_MODULES
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select SMM_TSEG
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select SMP
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select SPI_FLASH
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select SSE2
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select SUPPORT_CPU_UCODE_IN_CBFS
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select TSC_CONSTANT_RATE
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select TSC_SYNC_MFENCE
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select UDELAY_TSC
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config BOOTBLOCK_CPU_INIT
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string
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default "soc/intel/baytrail/bootblock/bootblock.c"
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config MMCONF_BASE_ADDRESS
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hex
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default 0xe0000000
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config MAX_CPUS
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int
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default 4
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config CPU_ADDR_BITS
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int
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default 36
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config SMM_TSEG_SIZE
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hex
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default 0x800000
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config SMM_RESERVED_SIZE
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hex
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default 0x100000
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config HAVE_MRC
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bool "Add a Memory Reference Code binary"
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default y
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help
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Select this option to add a blob containing
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memory reference code.
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Note: Without this binary coreboot will not work
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if HAVE_MRC
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config MRC_FILE
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string "Intel memory refeference code path and filename"
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default "3rdparty/northbridge/intel/sandybridge/systemagent-r6.bin"
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help
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The path and filename of the file to use as System Agent
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binary. Note that this points to the sandybridge binary file
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which is will not work, but it serves its purpose to do builds.
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config MRC_BIN_ADDRESS
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hex
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default 0xfffa0000
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config CACHE_MRC_SETTINGS
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bool "Save cached MRC settings"
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default n
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if CACHE_MRC_SETTINGS
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config MRC_SETTINGS_CACHE_BASE
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hex
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default 0xffb00000
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config MRC_SETTINGS_CACHE_SIZE
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hex
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default 0x10000
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endif # CACHE_MRC_SETTINGS
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endif # HAVE_MRC
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# Cache As RAM region layout:
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#
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# +-------------+ DCACHE_RAM_BASE + DCACHE_RAM_SIZE + DCACHE_RAM_MRC_VAR_SIZE
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# | MRC usage |
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# | |
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# +-------------+ DCACHE_RAM_BASE + DCACHE_RAM_SIZE
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# | Stack |\
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# | | | * DCACHE_RAM_ROMSTAGE_STACK_SIZE
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# | v |/
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# +-------------+
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# | ^ |
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# | | |
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# | CAR Globals |
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# +-------------+ DCACHE_RAM_BASE
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#
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# Note that the MRC binary is linked to assume the region marked as "MRC usage"
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# starts at DCACHE_RAM_BASE + DCACHE_RAM_SIZE. If those values change then
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# a new MRC binary needs to be produced with the updated start and size
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# information.
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config DCACHE_RAM_BASE
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hex
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default 0xff800000
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config DCACHE_RAM_SIZE
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hex
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default 0x8000
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help
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The size of the cache-as-ram region required during bootblock
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and/or romstage. Note DCACHE_RAM_SIZE and DCACHE_RAM_MRC_VAR_SIZE
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must add up to a power of 2.
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config DCACHE_RAM_MRC_VAR_SIZE
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hex
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default 0x8000
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help
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The amount of cache-as-ram region required by the reference code.
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config DCACHE_RAM_ROMSTAGE_STACK_SIZE
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hex
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default 0x800
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help
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The amount of anticipated stack usage from the data cache
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during pre-ram rom stage execution.
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config RESET_ON_INVALID_RAMSTAGE_CACHE
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bool "Reset the system on S3 wake when ramstage cache invalid."
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default n
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depends on RELOCATABLE_RAMSTAGE
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help
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The baytrail romstage code caches the loaded ramstage program
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in SMM space. On S3 wake the romstage will copy over a fresh
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ramstage that was cached in the SMM space. This option determines
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the action to take when the ramstage cache is invalid. If selected
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the system will reset otherwise the ramstage will be reloaded from
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cbfs.
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config CBFS_SIZE
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hex "Size of CBFS filesystem in ROM"
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default 0x100000
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help
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On Bay Trail systems the firmware image has to store a lot more
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than just coreboot, including:
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- a firmware descriptor
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- Intel Management Engine firmware
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- MRC cache information
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This option allows to limit the size of the CBFS portion in the
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firmware image.
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config ENABLE_BUILTIN_COM1
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bool "Enable builtin COM1 Serial Port"
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default n
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help
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The PMC has a legacy COM1 serial port. Choose this option to
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configure the pads and enable it. This serial port can be used for
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the debug console.
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config HAVE_ME_BIN
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bool "Add Intel Management Engine firmware"
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default y
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help
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The Intel processor in the selected system requires a special firmware
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for an integrated controller called Management Engine (ME). The ME
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firmware might be provided in coreboot's 3rdparty repository. If
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not and if you don't have the firmware elsewhere, you can still
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build coreboot without it. In this case however, you'll have to make
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sure that you don't overwrite your ME firmware on your flash ROM.
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config ME_BIN_PATH
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string "Path to management engine firmware"
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depends on HAVE_ME_BIN
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default "3rdparty/mainboard/$(MAINBOARDDIR)/me.bin"
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config HAVE_IFD_BIN
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bool
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default y
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config BUILD_WITH_FAKE_IFD
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bool "Build with a fake IFD"
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default y if !HAVE_IFD_BIN
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help
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If you don't have an Intel Firmware Descriptor (ifd.bin) for your
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board, you can select this option and coreboot will build without it.
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Though, the resulting coreboot.rom will not contain all parts required
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to get coreboot running on your board. You can however write only the
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BIOS section to your board's flash ROM and keep the other sections
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untouched. Unfortunately the current version of flashrom doesn't
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support this yet. But there is a patch pending [1].
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WARNING: Never write a complete coreboot.rom to your flash ROM if it
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was built with a fake IFD. It just won't work.
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[1] http://www.flashrom.org/pipermail/flashrom/2013-June/011083.html
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config IFD_BIOS_SECTION
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depends on BUILD_WITH_FAKE_IFD
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string
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default ""
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config IFD_ME_SECTION
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depends on BUILD_WITH_FAKE_IFD
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string
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default ""
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config IFD_PLATFORM_SECTION
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depends on BUILD_WITH_FAKE_IFD
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string
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default ""
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config IFD_BIN_PATH
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string "Path to intel firmware descriptor"
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depends on !BUILD_WITH_FAKE_IFD
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default "3rdparty/mainboard/$(MAINBOARDDIR)/descriptor.bin"
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endif
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