Andrey Petrov (andrey.petrov(a)intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13706
-gerrit
commit 34d1abf1716d6243b4b225a78adbe5451a6d0501
Author: Andrey Petrov <andrey.petrov(a)intel.com>
Date: Fri Feb 12 15:12:43 2016 -0800
soc/intel/apollolake: Add support for memory-mapped boot media
On Apollo Lake SPI flash is memory mapped. The mapping is different
to previous platforms. Only "BIOS" region is mapped in contrast to
whole flash. Also, the 128 KiB right below 4 GiB are being decoded by
readonly SRAM. Fail accesses to those regions, rather than returning
false data.
Change-Id: Iac3fa74cd221a5a46ceb34c2a79470290bcc2d84
Signed-off-by: Andrey Petrov <andrey.petrov(a)intel.com>
---
src/mainboard/intel/apollolake_rvp/Kconfig | 9 ++++
src/soc/intel/apollolake/Kconfig | 3 ++
src/soc/intel/apollolake/Makefile.inc | 3 ++
src/soc/intel/apollolake/mmap_boot.c | 74 ++++++++++++++++++++++++++++++
4 files changed, 89 insertions(+)
diff --git a/src/mainboard/intel/apollolake_rvp/Kconfig b/src/mainboard/intel/apollolake_rvp/Kconfig
index 52d3777..9920b46 100644
--- a/src/mainboard/intel/apollolake_rvp/Kconfig
+++ b/src/mainboard/intel/apollolake_rvp/Kconfig
@@ -17,4 +17,13 @@ config MAINBOARD_VENDOR
string
default "Intel"
+config IFD_BIOS_END
+ hex
+ default 0x6FF000
+
+config IFD_BIOS_START
+ hex
+ default 0x1000
+
+
endif
diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig
index bb0cc20..401535f 100644
--- a/src/soc/intel/apollolake/Kconfig
+++ b/src/soc/intel/apollolake/Kconfig
@@ -80,4 +80,7 @@ config C_ENV_BOOTBLOCK_SIZE
hex
default 0x8000
+config X86_TOP4G_BOOTMEDIA_MAP
+ bool
+ default n
endif
diff --git a/src/soc/intel/apollolake/Makefile.inc b/src/soc/intel/apollolake/Makefile.inc
index 7f8beb0..17ddaec 100644
--- a/src/soc/intel/apollolake/Makefile.inc
+++ b/src/soc/intel/apollolake/Makefile.inc
@@ -11,17 +11,20 @@ bootblock-y += bootblock/bootblock.c
bootblock-y += bootblock/cache_as_ram.S
bootblock-y += bootblock/bootblock.c
bootblock-y += gpio.c
+bootblock-y += mmap_boot.c
bootblock-y += placeholders.c
bootblock-y += tsc_freq.c
bootblock-y += uart_early.c
romstage-y += placeholders.c
romstage-y += gpio.c
+romstage-y += mmap_boot.c
romstage-y += uart_early.c
smm-y += placeholders.c
ramstage-y += placeholders.c
ramstage-y += gpio.c
+ramstage-y += mmap_boot.c
ramstage-y += uart_early.c
CPPFLAGS_common += -I$(src)/soc/intel/apollolake/include
diff --git a/src/soc/intel/apollolake/mmap_boot.c b/src/soc/intel/apollolake/mmap_boot.c
new file mode 100644
index 0000000..8a56639
--- /dev/null
+++ b/src/soc/intel/apollolake/mmap_boot.c
@@ -0,0 +1,74 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2015 Intel Corp.
+ * (Written by Andrey Petrov <andrey.petrov(a)intel.com> for Intel Corp.)
+ * (Written by Alexandru Gagniuc <alexandrux.gagniuc(a)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 <boot_device.h>
+#include <cbfs.h>
+#include <commonlib/region.h>
+#include <console/console.h>
+#include <fmap.h>
+
+/* The 128 KiB right below 4G are decoded by readonly SRAM, not boot media */
+#define IFD_BIOS_MAX_MAPPED (CONFIG_IFD_BIOS_END - 128 * KiB)
+#define IFD_MAPPED_SIZE (IFD_BIOS_MAX_MAPPED - CONFIG_IFD_BIOS_START)
+#define IFD_BIOS_SIZE (CONFIG_IFD_BIOS_END - CONFIG_IFD_BIOS_START)
+
+/*
+ * If Apollo Lake is configured to boot from SPI flash "BIOS" region
+ * (as defined in descriptor) is mapped below 4GiB. Form a pointer for
+ * the base.
+ */
+#define VIRTUAL_ROM_BASE ((uintptr_t)(0x100000000ULL - IFD_BIOS_SIZE))
+
+static const struct mem_region_device shadow_dev = MEM_REGION_DEV_INIT(
+ VIRTUAL_ROM_BASE, IFD_BIOS_MAX_MAPPED
+);
+
+/*
+ * This is how we translate physical SPI flash address space into CPU memory-mapped space. In
+ * essence this means "BIOS" region (usually starts at flash physical 0x1000 is mapped to
+ * 4G - IFD_BIOS_SIZE.
+ */
+static const struct xlate_region_device real_dev = XLATE_REGION_INIT(
+ &shadow_dev.rdev, CONFIG_IFD_BIOS_START,
+ IFD_MAPPED_SIZE, CONFIG_ROM_SIZE
+);
+
+const struct region_device *boot_device_ro(void)
+{
+ return &real_dev.rdev;
+}
+
+static int iafw_boot_region_properties(struct cbfs_props *props)
+{
+ struct region regn;
+
+ /* use fmap to locate CBFS area */
+ if (fmap_locate_area("COREBOOT", ®n))
+ return -1;
+
+ props->offset = regn.offset;
+ props->size = regn.size;
+
+ printk(BIOS_DEBUG, "CBFS @ %zx size %zx\n", props->offset, props->size);
+
+ return 0;
+}
+
+/*
+ * Named cbfs_master_header_locator so that it overrides the default, but
+ * incompatible locator in cbfs.c
+ */
+const struct cbfs_locator cbfs_master_header_locator = {
+ .name = "IAFW Locator",
+ .locate = iafw_boot_region_properties,
+};
Andrey Petrov (andrey.petrov(a)intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13803
-gerrit
commit f98ffa015a644b4b0e5e64a51c0d2dc594024080
Author: Andrey Petrov <andrey.petrov(a)intel.com>
Date: Thu Feb 25 17:14:29 2016 -0800
cpu/intel: Compile FIT table for romstage as well
On Apollolake FIT needs to be accessed during romstage, so the
fit_pointer symbol can be used as well.
Change-Id: Id910ec8e2729ccd2f1e5caa0a847c8790638175a
Signed-off-by: Andrey Petrov <andrey.petrov(a)intel.com>
---
src/cpu/intel/fit/Makefile.inc | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/cpu/intel/fit/Makefile.inc b/src/cpu/intel/fit/Makefile.inc
index 4b540ba..7f92806 100644
--- a/src/cpu/intel/fit/Makefile.inc
+++ b/src/cpu/intel/fit/Makefile.inc
@@ -1 +1,2 @@
bootblock-y += fit.S
+romstage-y += fit.S
Andrey Petrov (andrey.petrov(a)intel.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/13803
-gerrit
commit 2e9b8197c355f6fbd914c1d3a87432b0b28c0384
Author: Andrey Petrov <andrey.petrov(a)intel.com>
Date: Thu Feb 25 17:14:29 2016 -0800
cpu/intel: Compile FIT table for romstage as well
On Apollolake FIT needs to be accessed during romstage, so the
fit_pointer symbol can be used as well.
Change-Id: Id910ec8e2729ccd2f1e5caa0a847c8790638175a
Signed-off-by: Andrey Petrov <andrey.petrov(a)intel.com>
---
src/cpu/intel/fit/Makefile.inc | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/cpu/intel/fit/Makefile.inc b/src/cpu/intel/fit/Makefile.inc
index 4b540ba..7f92806 100644
--- a/src/cpu/intel/fit/Makefile.inc
+++ b/src/cpu/intel/fit/Makefile.inc
@@ -1 +1,2 @@
bootblock-y += fit.S
+romstage-y += fit.S