Add Sandbox driver for SMEM. mostly stub operations.
Signed-off-by: Ramon Fried
---
Changes in v2: None
arch/sandbox/dts/test.dts | 4
configs/sandbox64_defconfig | 2 ++
configs/sandbox_defconfig | 2 ++
drivers/smem/Kconfig| 9
drivers/smem/Makefile | 1 +
drivers/smem/sandbox_smem.c | 45 +
6 files changed, 63 insertions(+)
create mode 100644 drivers/smem/sandbox_smem.c
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 5752bf547e..01e6bc0367 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -382,6 +382,10 @@
remoteproc-name = "remoteproc-test-dev2";
};
+ smem@0 {
+ compatible = "sandbox,smem";
+ };
+
spi@0 {
#address-cells = <1>;
#size-cells = <0>;
diff --git a/configs/sandbox64_defconfig b/configs/sandbox64_defconfig
index 20a2ab3ffb..1fa85a819c 100644
--- a/configs/sandbox64_defconfig
+++ b/configs/sandbox64_defconfig
@@ -199,3 +199,5 @@ CONFIG_UT_TIME=y
CONFIG_UT_DM=y
CONFIG_UT_ENV=y
CONFIG_UT_OVERLAY=y
+CONFIG_SMEM=y
+CONFIG_SANDBOX_SMEM=y
diff --git a/configs/sandbox_defconfig b/configs/sandbox_defconfig
index 2fc84a16c9..47f6bfd87f 100644
--- a/configs/sandbox_defconfig
+++ b/configs/sandbox_defconfig
@@ -200,3 +200,5 @@ CONFIG_UT_TIME=y
CONFIG_UT_DM=y
CONFIG_UT_ENV=y
CONFIG_UT_OVERLAY=y
+CONFIG_SMEM=y
+CONFIG_SANDBOX_SMEM=y
diff --git a/drivers/smem/Kconfig b/drivers/smem/Kconfig
index 77ad02e236..3aa32a6c13 100644
--- a/drivers/smem/Kconfig
+++ b/drivers/smem/Kconfig
@@ -3,6 +3,15 @@ menuconfig SMEM
if SMEM
+config SANDBOX_SMEM
+bool "Sandbox Shared Memory Manager (SMEM)"
+depends on SANDBOX && DM
+help
+ enable SMEM support for sandbox. This is an emulation of a real SMEM
+ manager.
+ The sandbox driver allocates a shared memory from the heap and
+ initialzies it on start.
+
config MSM_SMEM
bool "Qualcomm Shared Memory Manager (SMEM)"
depends on DM
diff --git a/drivers/smem/Makefile b/drivers/smem/Makefile
index 605b8fc290..af3e9b5088 100644
--- a/drivers/smem/Makefile
+++ b/drivers/smem/Makefile
@@ -2,5 +2,6 @@
#
# Makefile for the U-Boot SMEM interface drivers
+obj-$(CONFIG_SANDBOX_SMEM) += sandbox_smem.o
obj-$(CONFIG_SMEM) += smem-uclass.o
obj-$(CONFIG_MSM_SMEM) += msm_smem.o
diff --git a/drivers/smem/sandbox_smem.c b/drivers/smem/sandbox_smem.c
new file mode 100644
index 00..7397e4407a
--- /dev/null
+++ b/drivers/smem/sandbox_smem.c
@@ -0,0 +1,45 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2018 Ramon Fried
+ */
+
+#include
+#include
+#include
+#include
+#include
+
+static int sandbox_smem_alloc(unsigned int host,
+ unsigned int item, size_t size)
+{
+ return 0;
+}
+
+static void *sandbox_smem_get(unsigned int host,
+ unsigned int item, size_t *size)
+{
+ return NULL;
+}
+
+static int sandbox_smem_get_free_space(unsigned int host)
+{
+ return 0;
+}
+
+static const struct smem_ops sandbox_smem_ops = {
+ .alloc = sandbox_smem_alloc,
+ .get= sandbox_smem_get,
+ .get_free_space = sandbox_smem_get_free_space,
+};
+
+static const struct udevice_id sandbox_smem_ids[] = {
+ { .compatible = "sandbox,smem" },
+ { }
+};
+
+U_BOOT_DRIVER(smem_sandbox) = {
+ .name = "smem_sandbox",
+ .id = UCLASS_SMEM,
+ .of_match = sandbox_smem_ids,
+ .ops= _smem_ops,
+};
--
2.17.1
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