[coreboot-gerrit] New patch to review for coreboot: Calculate HUDSON_FWM_POSITION and display warning on mismatch
Martin Roth (gaumless@gmail.com)
gerrit at coreboot.org
Sun Jun 28 22:13:03 CEST 2015
Martin Roth (gaumless at gmail.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10682
-gerrit
commit f001eba1d2886c6b872edb2671908528c8b96caf
Author: Martin Roth <gaumless at gmail.com>
Date: Sun Jun 28 14:06:23 2015 -0600
Calculate HUDSON_FWM_POSITION and display warning on mismatch
This patch calculates the address where the chipset firmware descriptor
should be located and compares it against the actual value from Kconfig.
If the two don't match, it puts up a warning.
This could probably replace the config variable completely, but I wanted
to see how other people felt before doing that. I seem to recall that
the value used to be calculated, so I figure that there must be a reason
it's done this way at this point.
If we do want to keep the Kconfig setting, this patch could also be
modified to just verify that the HUDSON_FWM_POSITION is inside the ROM
space.
Change-Id: I94addf463e2c694a94eef218ec855103a3bb5da5
Signed-off-by: Martin Roth <gaumless at gmail.com>
---
src/southbridge/amd/agesa/hudson/Makefile.inc | 5 +++++
src/southbridge/amd/pi/hudson/Makefile.inc | 5 +++++
2 files changed, 10 insertions(+)
diff --git a/src/southbridge/amd/agesa/hudson/Makefile.inc b/src/southbridge/amd/agesa/hudson/Makefile.inc
index ea86a32..85e5596 100644
--- a/src/southbridge/amd/agesa/hudson/Makefile.inc
+++ b/src/southbridge/amd/agesa/hudson/Makefile.inc
@@ -34,8 +34,13 @@ ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smi.c smi_util.c
# |0x55AA55AA |EC ROM Address |GEC ROM Address |USB3 ROM |
# +-----------+---------------+----------------+------------+
# EC ROM should be 64K aligned.
+
+HUDSON_FWM_POS_CALC=$(shell let y="0xffffffff - ($(CONFIG_COREBOOT_ROMSIZE_KB) * 1024) + 1 + 0x20000" ; printf "%u\n" $$y)
HUDSON_FWM_POSITION=$(shell printf %u $(CONFIG_HUDSON_FWM_POSITION))
+ifneq ($(HUDSON_FWM_POS_CALC), $(HUDSON_FWM_POSITION))
+$(warning ##### WARNING: CONFIG_HUDSON_FWM_POSITION does not match calculated firmware position $(HUDSON_FWM_POS_CALC) != $(HUDSON_FWM_POSITION) ##### )
+endif
#assume the cbfs header is less than 128 bytes.
ROMSIG_SIZE=16
ifeq ($(CONFIG_HUDSON_XHCI_FWM), y)
diff --git a/src/southbridge/amd/pi/hudson/Makefile.inc b/src/southbridge/amd/pi/hudson/Makefile.inc
index 235ce1e..f56f3dc 100644
--- a/src/southbridge/amd/pi/hudson/Makefile.inc
+++ b/src/southbridge/amd/pi/hudson/Makefile.inc
@@ -58,7 +58,12 @@ ramstage-$(CONFIG_HAVE_SMI_HANDLER) += smi.c smi_util.c
#
# EC ROM should be 64K aligned.
+HUDSON_FWM_POS_CALC=$(shell let y="0xffffffff - ($(CONFIG_COREBOOT_ROMSIZE_KB) * 1024) + 1 + 0x20000" ; printf "%u\n" $$y)
HUDSON_FWM_POSITION=$(shell printf %u $(CONFIG_HUDSON_FWM_POSITION))
+
+ifneq ($(HUDSON_FWM_POS_CALC), $(HUDSON_FWM_POSITION))
+$(warning ##### WARNING: CONFIG_HUDSON_FWM_POSITION does not match calculated firmware position $(HUDSON_FWM_POS_CALC) != $(HUDSON_FWM_POSITION) ##### )
+endif
CBFS_HEADER_SIZE=0x40
#assume the cbfs header is less than $(CBFS_HEADER_SIZE) bytes.
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