diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2012-12-03 16:17:40 -0600 |
|---|---|---|
| committer | Ronald G. Minnich <rminnich@gmail.com> | 2013-03-17 22:53:51 +0100 |
| commit | 6dcceddff53ad309b91b61661ae7deab37f272ec (patch) | |
| tree | 21177990702c7fa3b99ca4d59def9fd4c548008e /src/cpu/intel/fit | |
| parent | 239c2e843f976d5915964c8cb1923305c574f8b5 (diff) | |
x86 intel: Add Firmware Interface Table support
Haswell CPUs require a FIT table in the firmware. This commit
adds rudimentary support for a FIT table. The number of entries
in the table is based on a configuration option. The code only
generates a type 0 entry. A follow-on tool will need to be developed
to populate the FIT entries as well as checksumming the table.
Verified image has a FIT pointer and table when option is selected.
Change-Id: I3a314016a09a1cc26bf1fb5d17aa50853d2ef4f8
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: http://review.coreboot.org/2642
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Diffstat (limited to 'src/cpu/intel/fit')
| -rw-r--r-- | src/cpu/intel/fit/Kconfig | 12 | ||||
| -rw-r--r-- | src/cpu/intel/fit/fit.inc | 30 | ||||
| -rw-r--r-- | src/cpu/intel/fit/fit.lds | 6 |
3 files changed, 48 insertions, 0 deletions
diff --git a/src/cpu/intel/fit/Kconfig b/src/cpu/intel/fit/Kconfig new file mode 100644 index 0000000000..9b57556827 --- /dev/null +++ b/src/cpu/intel/fit/Kconfig @@ -0,0 +1,12 @@ +config CPU_INTEL_FIRMWARE_INTERFACE_TABLE + def_bool n + help + This option selects building a Firmware Interface Table (FIT). + +config CPU_INTEL_NUM_FIT_ENTRIES + int + default 4 + depends on CPU_INTEL_FIRMWARE_INTERFACE_TABLE + help + This option selects the number of empty entries in the FIT table. + diff --git a/src/cpu/intel/fit/fit.inc b/src/cpu/intel/fit/fit.inc new file mode 100644 index 0000000000..e4595c0d6d --- /dev/null +++ b/src/cpu/intel/fit/fit.inc @@ -0,0 +1,30 @@ +.section ".fit_pointer", "a", @progbits + .code32 +.global fit_pointer +fit_pointer: +.long fit_table +.long 0 +.previous + +.section ".rom.data", "a", @progbits +.align 16 +.global fit_table +.global fit_table_end +fit_table: +/* Address for type 0 is '_FIT_ ' */ +.long 0x5449465f +.long 0x2020205f +/* + * There is 1 entry in the table. Other tools will have to update the size + * and checksum when adding entries. + */ +.long 0x00000001 +/* Version */ +.word 0x0100 +/* Type 0 with checksum valid. */ +.byte 0x80 +/* Checksum byte - must add to zero. */ +.byte 0x7d +.fill CONFIG_CPU_INTEL_NUM_FIT_ENTRIES*16 +fit_table_end: +.previous diff --git a/src/cpu/intel/fit/fit.lds b/src/cpu/intel/fit/fit.lds new file mode 100644 index 0000000000..9ccfe82c5f --- /dev/null +++ b/src/cpu/intel/fit/fit.lds @@ -0,0 +1,6 @@ +SECTIONS { + . = 0xffffffc0; + .fit_pointer (.): { + *(.fit_pointer) + } +} |