New patch to review for coreboot: 263f9a5 pistachio: add SOC descriptor

[Stefan Reinauer]

Stefan Reinauer ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9192

-gerrit

commit 263f9a563feabf8a68a523f8d114873651b725dc
Author: Vadim Bendebury 
Date:   Mon Dec 1 18:34:37 2014 -0800

pistachio: add SOC descriptor

With this descriptor added ramstage properly allocates memory
    resources and creates entries in coreboot table. This also allows to
    proceed to booting depthcharge, as it now can be loaded into the
    existing memory.

BRANCH=none
    BUG=chrome-os-partner:31438

TEST=with the set of patches applied the firmware properly finds
         depthcharge in CBFS, uncompresses it and attempts to start:

...
      Booting payload fallback/payload from cbfs
      Loading segment from rom address 0x9b000058
        code (compression=1)
        New segment dstaddr 0x80124020 memsize 0x2099a0 srcaddr 0x9b000090 filesize 0xbbe
      Loading segment from rom address 0x9b000074
        Entry Point 0x80124038
      Loading Segment: addr: 0x0000000080124020 memsz: 0x00000000002099a0 filesz: 0x0000000000000bbe
      lb: [0x0000000080000000, 0x0000000080013858)
      Post relocation: addr: 0x0000000080124020 memsz: 0x00000000002099a0 filesz: 0x0000000000000bbe
      using LZMA
      [ 0x80124020, 8012596c, 0x8032d9c0) <- 9b000090
      Clearing Segment: addr: 0x000000008012596c memsz: 0x0000000000208054
      dest 80124020, end 8032d9c0, bouncebuffer 8ffd4f50
      Loaded segments
      BS: BS_PAYLOAD_LOAD times (us): entry 129 run 34579421 exit 129
      Jumping to boot code at 80124038
      ERROR: dropped a timestamp entry
      CPU0: stack: 9a00c800 - 9a00d800, lowest used address 9a00d498, stack used: 872 bytes
      entry    = 80124038

Change-Id: I15809e146407d66b04f2a97c47c961fdccb8e175
    Signed-off-by: Stefan Reinauer 
    Original-Commit-Id: a1577c5532a064426a3ea88b6f7f30ccdae24eaf
    Original-Change-Id: Ifed5550f2c18430e9ae06ad1ecacaa13191b5995
    Original-Signed-off-by: Vadim Bendebury 
    Original-Reviewed-on: https://chromium-review.googlesource.com/232571
    Original-Reviewed-by: Aaron Durbin 
---
 src/mainboard/google/urara/devicetree.cb |  1 +
 src/soc/imgtec/pistachio/Makefile.inc    |  1 +
 src/soc/imgtec/pistachio/soc.c           | 48 ++++++++++++++++++++++++++++++++
 3 files changed, 50 insertions(+)

diff --git a/src/mainboard/google/urara/devicetree.cb b/src/mainboard/google/urara/devicetree.cb
index a328b9d..e3eb091 100644
--- a/src/mainboard/google/urara/devicetree.cb
+++ b/src/mainboard/google/urara/devicetree.cb
@@ -20,6 +20,7 @@
 #

chip soc/imgtec/pistachio
+	device cpu_cluster 0 on end
    chip drivers/generic/generic # I2C0 controller
    	device i2c 6 on end # Fake component for testing
    end
diff --git a/src/soc/imgtec/pistachio/Makefile.inc b/src/soc/imgtec/pistachio/Makefile.inc
index 1f39714..d693a1c 100644
--- a/src/soc/imgtec/pistachio/Makefile.inc
+++ b/src/soc/imgtec/pistachio/Makefile.inc
@@ -34,6 +34,7 @@ bootblock-y += monotonic_timer.c

ramstage-y += cbmem.c
 ramstage-y += monotonic_timer.c
+ramstage-y += soc.c

romstage-y += cbmem.c
 romstage-y += romstage.c
diff --git a/src/soc/imgtec/pistachio/soc.c b/src/soc/imgtec/pistachio/soc.c
new file mode 100644
index 0000000..7c2884f
--- /dev/null
+++ b/src/soc/imgtec/pistachio/soc.c
@@ -0,0 +1,48 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2014 The Chromium OS Authors.
+ *
+ * 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; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <console/console.h>
+#include <device/device.h>
+#include <symbols.h>
+
+static void soc_read_resources(device_t dev)
+{
+	ram_resource(dev, 0, (uintptr_t)_dram / KiB,
+		     (CONFIG_DRAM_SIZE_MB * MiB) / KiB);
+}
+
+static void soc_init(device_t dev)
+{
+	printk(BIOS_INFO, "CPU: Imgtec Pistachio\n");
+}
+
+static struct device_operations soc_ops = {
+	.read_resources = soc_read_resources,
+	.init		= soc_init,
+};
+
+static void enable_soc_dev(device_t dev)
+{
+	dev->ops = &soc_ops;
+}
+
+struct chip_operations soc_imgtec_pistachio_ops = {
+	CHIP_NAME("SOC: Imgtec Pistachio")
+	.enable_dev = enable_soc_dev,
+};