soc/amd: factor out non-CAR romstage to common code

Since the romstage code is very similar between all AMD non-CAR SoCs,
factor out a common romstage implementation. All SoCs that select
SOC_AMD_COMMON_BLOCK_PM_CHIPSET_STATE_SAVE call fill_chipset_state, so
this Kconfig option can be used to determine whether to make that call.
In the FSP case, amd_fsp_early_init gets called, while in the case of an
implementation that doesn't rely on an FSP to do the initialization,
cbmem_initialize_empty gets called to set up CBMEM which otherwise would
be done inside the FSP driver code. Since only some SoCs call
fch_disable_legacy_dma_io again in romstage right after
amd_fsp_early_init, introduce the new
SOC_AMD_COMMON_ROMSTAGE_LEGACY_DMA_FIXUP Kconfig option, so that the
SoCs can specify if this call is needed or not.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I4a0695714ba08b13a58b12a490da50cb7f5a1ca9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/80083
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martin.roth@amd.corp-partner.google.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/src/soc/amd/cezanne/Makefile.inc b/src/soc/amd/cezanne/Makefile.inc
index 044d33ead2..dedf98c4bd 100644
--- a/src/soc/amd/cezanne/Makefile.inc
+++ b/src/soc/amd/cezanne/Makefile.inc
@@ -17,7 +17,6 @@ bootblock-y	+= early_fch.c
 bootblock-y	+= espi_util.c
 
 romstage-y	+= fsp_m_params.c
-romstage-y	+= romstage.c
 
 ramstage-y	+= acpi.c
 ramstage-y	+= agesa_acpi.c