soc/intel/cmn/block/cpu: Set BIOS_DONE on all CPUs

As per Intel Processor EDS, BIOS_DONE bit needs to be set on
all CPUs via MSR.

Also, implement a function to perform any SoC recommended CPU
programming prior to post CPUs init. At present calling
`cpu_soc_bios_done()` for all CPUs from `before_post_cpus_init()`.

Note: It is expected that `before_post_cpus_init()` will be
extended with other CPU programming recommendations in follow up
patches, for example: reload microcode patch etc.

BUG=b:233199592
TEST=Build and boot google/taeko to ChromeOS.

Signed-off-by: Subrata Banik <subratabanik@google.com>
Change-Id: I8066cd724c9f15d259aeb23f3aa71a2d224d5340
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64834
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Lean Sheng Tan <sheng.tan@9elements.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/soc/intel/common/block/include/intelblocks/mp_init.h b/src/soc/intel/common/block/include/intelblocks/mp_init.h
index 8a413eae8ce4..9029c91c4546 100644
--- a/src/soc/intel/common/block/include/intelblocks/mp_init.h
+++ b/src/soc/intel/common/block/include/intelblocks/mp_init.h
@@ -34,6 +34,13 @@ void get_microcode_info(const void **microcode, int *parallel);
 void init_cpus(void);
 
 /*
+ * This function will perform any recommended CPU (BSP and AP) initialization
+ * after coreboot has done the multiprocessor initialization (before FSP-S)
+ * and prior to coreboot perform post_cpus_init (after DRAM resources are set).
+ */
+void before_post_cpus_init(void);
+
+/*
  * SoC Overrides
  *
  * All new SoC must implement below functionality for ramstage.