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authorAndrey Petrov <andrey.petrov@intel.com>2016-03-02 15:09:27 -0800
committerAaron Durbin <adurbin@chromium.org>2016-03-08 17:28:45 +0100
commit491c016d77fa56461e8669e45796da97bbab3c37 (patch)
treeac58ec3ae89b0cd5a57812afa22f2b8ec6d32725
parent41aa8bc9abd8ce29a716d283c481fd74e9ac9567 (diff)
downloadcoreboot-491c016d77fa56461e8669e45796da97bbab3c37.tar.xz
soc/intel/apollolake: Add cbmem_top() implementation
On Apollolake CPU memory mapping is similar to previous SoC, and we place CBMEM right under TSEG. Change-Id: I606f690449ba98af6e9fc3074d677c7287892164 Signed-off-by: Andrey Petrov <andrey.petrov@intel.com> Reviewed-on: https://review.coreboot.org/13883 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org>
-rw-r--r--src/soc/intel/apollolake/Makefile.inc2
-rw-r--r--src/soc/intel/apollolake/memmap.c27
-rw-r--r--src/soc/intel/apollolake/placeholders.c5
3 files changed, 29 insertions, 5 deletions
diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc
index 81ca688d67..dd2213e869 100644
--- a/src/soc/intel/apollolake/Makefile.inc
+++ b/src/soc/intel/apollolake/Makefile.inc
@@ -20,12 +20,14 @@ romstage-y += placeholders.c
romstage-$(CONFIG_PLATFORM_USES_FSP2_0) += romstage.c
romstage-y += gpio.c
romstage-$(CONFIG_SOC_UART_DEBUG) += uart_early.c
+romstage-y += memmap.c
romstage-y += mmap_boot.c
smm-y += placeholders.c
ramstage-y += placeholders.c
ramstage-y += gpio.c
ramstage-$(CONFIG_SOC_UART_DEBUG) += uart_early.c
+ramstage-y += memmap.c
ramstage-y += mmap_boot.c
CPPFLAGS_common += -I$(src)/soc/intel/apollolake/include
diff --git a/src/soc/intel/apollolake/memmap.c b/src/soc/intel/apollolake/memmap.c
new file mode 100644
index 0000000000..bfff9652da
--- /dev/null
+++ b/src/soc/intel/apollolake/memmap.c
@@ -0,0 +1,27 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corp.
+ * (Written by Andrey Petrov <andrey.petrov@intel.com> for Intel Corp.)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <arch/io.h>
+#include <cbmem.h>
+#include <device/pci.h>
+#include <soc/northbridge.h>
+#include <soc/pci_devs.h>
+
+static uintptr_t smm_region_start(void)
+{
+ return ALIGN_DOWN(pci_read_config32(NB_DEV_ROOT, TSEG), 1*MiB);
+}
+
+void *cbmem_top(void)
+{
+ return (void *)smm_region_start();
+}
diff --git a/src/soc/intel/apollolake/placeholders.c b/src/soc/intel/apollolake/placeholders.c
index 3a818eb1e3..808bd5490b 100644
--- a/src/soc/intel/apollolake/placeholders.c
+++ b/src/soc/intel/apollolake/placeholders.c
@@ -3,11 +3,6 @@
#include <delay.h>
#include <rules.h>
-void *cbmem_top(void)
-{
- return NULL;
-}
-
void southbridge_smi_set_eos(void)
{
}