From 6dcceddff53ad309b91b61661ae7deab37f272ec Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Mon, 3 Dec 2012 16:17:40 -0600 Subject: 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 Reviewed-on: http://review.coreboot.org/2642 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Ronald G. Minnich --- src/cpu/intel/fit/fit.inc | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 src/cpu/intel/fit/fit.inc (limited to 'src/cpu/intel/fit/fit.inc') 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 -- cgit v1.2.3