Martin Roth has uploaded this change for review.

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soc/amd/picasso: Up stack size to 40k for vboot hash buffer

Increasing the vboot hash buffer size greatly speeds up the SHA
calculations.  Going from a standard 4k buffer to a 36k buffer
takes ~150ms of the boot and resume time.

TEST=Build & boot see that boot time has decreased.
BRANCH=Zork
BUG=b:169217270 - Zork: SHA calculation in vboot takes too long

Signed-off-by: Martin Roth <martinroth@chromium.org>
Change-Id: Ibca868ad7be639c2a0ca1c4ba6d71123d8b83c92
---
M src/soc/amd/picasso/memlayout_psp_verstage.ld
M src/soc/amd/picasso/psp_verstage/Makefile.inc
2 files changed, 4 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/02/46902/1

diff --git a/src/soc/amd/picasso/memlayout_psp_verstage.ld b/src/soc/amd/picasso/memlayout_psp_verstage.ld
index 1da07df..0036e9b 100644
--- a/src/soc/amd/picasso/memlayout_psp_verstage.ld
+++ b/src/soc/amd/picasso/memlayout_psp_verstage.ld
@@ -19,15 +19,15 @@
  * should be sufficient.  This is just for the function mapping the
  * actual stack.
  */
-#define PSP_VERSTAGE_TEMP_STACK_START	0x39000
+#define PSP_VERSTAGE_TEMP_STACK_START	0x32000
 #define PSP_VERSTAGE_TEMP_STACK_SIZE	4K
 
 /*
  * The top of the stack must be 4k aligned, so set the bottom as 4k aligned
  * and make the size a multiple of 4k
  */
-#define PSP_VERSTAGE_STACK_START	0x3B000
-#define PSP_VERSTAGE_STACK_SIZE		8K
+#define PSP_VERSTAGE_STACK_START	0x33000
+#define PSP_VERSTAGE_STACK_SIZE		40K
 
 ENTRY(_psp_vs_start)
 SECTIONS
diff --git a/src/soc/amd/picasso/psp_verstage/Makefile.inc b/src/soc/amd/picasso/psp_verstage/Makefile.inc
index 4f1642b..19083cdaf 100644
--- a/src/soc/amd/picasso/psp_verstage/Makefile.inc
+++ b/src/soc/amd/picasso/psp_verstage/Makefile.inc
@@ -4,6 +4,7 @@
 verstage-generic-ccopts += -I$(src)/vendorcode/amd/fsp/picasso/include
 verstage-generic-ccopts += -D__USER_SPACE__
 CPPFLAGS_common += -I$(VBOOT_SOURCE)/firmware/2lib/include/
+CFLAGS_arm += -Wstack-usage=40960
 
 verstage-y += delay.c
 verstage-y += fch.c

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