[coreboot-gerrit] Patch set updated for coreboot: arch/x86: Make postcar library available irrespective of CONFIG_POSTCAR_STAGE
Rizwan Qureshi (rizwan.qureshi@intel.com)
gerrit at coreboot.org
Tue Aug 30 13:11:58 CEST 2016
Rizwan Qureshi (rizwan.qureshi at intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/16331
-gerrit
commit 92795c14f6c2fd1fe6e59e43108a34d196a850d6
Author: Rizwan Qureshi <rizwan.qureshi at intel.com>
Date: Fri Aug 26 21:08:50 2016 +0530
arch/x86: Make postcar library available irrespective of CONFIG_POSTCAR_STAGE
postcar_loader.c has a useful library of funtions for
setting up stack and MTRRs. Make it available in romstage
irrespective of CONFIG_POSTCAR_STAGE for use in stack setup
after Dram init.
The final step of moving the used and max MTRRs on to stack
is moved to a new function, that can be used outside of
postcar phase.
Change-Id: I322b12577d74268d03fe42a9744648763693cddd
Signed-off-by: Rizwan Qureshi <rizwan.qureshi at intel.com>
---
src/arch/x86/Makefile.inc | 2 +-
src/arch/x86/include/arch/cpu.h | 6 ++++++
src/arch/x86/postcar_loader.c | 18 ++++++++++++------
3 files changed, 19 insertions(+), 7 deletions(-)
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 9b16add..38a2a8c 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -213,7 +213,7 @@ romstage-y += memcpy.c
romstage-y += memmove.c
romstage-y += memset.c
romstage-$(CONFIG_X86_TOP4G_BOOTMEDIA_MAP) += mmap_boot.c
-romstage-$(CONFIG_POSTCAR_STAGE) += postcar_loader.c
+romstage-y += postcar_loader.c
romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
ifneq ($(CONFIG_ROMCC),y)
diff --git a/src/arch/x86/include/arch/cpu.h b/src/arch/x86/include/arch/cpu.h
index 5c26bcf..faa2375 100644
--- a/src/arch/x86/include/arch/cpu.h
+++ b/src/arch/x86/include/arch/cpu.h
@@ -274,6 +274,12 @@ void postcar_frame_add_mtrr(struct postcar_frame *pcf,
uintptr_t addr, size_t size, int type);
/*
+ * Push used MTRR and Max MTRRs on to the stack
+ * and return pointer to stack top.
+ */
+void *postcar_commit_mtrrs(struct postcar_frame *pcf);
+
+/*
* Load and run a program that takes control of execution that
* tears down CAR and loads ramstage. The postcar_frame object
* indicates how to set up the frame. If caching is enabled at
diff --git a/src/arch/x86/postcar_loader.c b/src/arch/x86/postcar_loader.c
index cc1d460..b5d8db0 100644
--- a/src/arch/x86/postcar_loader.c
+++ b/src/arch/x86/postcar_loader.c
@@ -84,6 +84,17 @@ void postcar_frame_add_mtrr(struct postcar_frame *pcf,
pcf->num_var_mttrs++;
}
+void *postcar_commit_mtrrs(struct postcar_frame *pcf)
+{
+ /*
+ * Place the number of used variable MTRRs on stack then max number
+ * of variable MTRRs supported in the system.
+ */
+ stack_push(pcf, pcf->num_var_mttrs);
+ stack_push(pcf, pcf->max_var_mttrs);
+ return (void *) pcf->stack;
+}
+
void run_postcar_phase(struct postcar_frame *pcf)
{
struct prog prog =
@@ -93,12 +104,7 @@ void run_postcar_phase(struct postcar_frame *pcf)
.prog = &prog,
};
- /*
- * Place the number of used variable MTRRs on stack then max number
- * of variable MTRRs supported in the system.
- */
- stack_push(pcf, pcf->num_var_mttrs);
- stack_push(pcf, pcf->max_var_mttrs);
+ postcar_commit_mtrrs(pcf);
if (prog_locate(&prog))
die("Failed to locate after CAR program.\n");
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