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drivers: smem: sandbox

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Add Sandbox driver for SMEM. mostly stub operations.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Ramon Fried 2018-07-02 02:57:59 +03:00 committed by Tom Rini
parent 6621bedb96
commit 7fd7e2cf33
6 changed files with 63 additions and 0 deletions
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4
arch/sandbox/dts/test.dts
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@ -382,6 +382,10 @@
remoteproc-name = "remoteproc-test-dev2";
};
smem@0 {
compatible = "sandbox,smem";
};
spi@0 {
#address-cells = <1>;
#size-cells = <0>;

2
configs/sandbox64_defconfig
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@ -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

2
configs/sandbox_defconfig
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@ -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

9
drivers/smem/Kconfig
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@ -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

1
drivers/smem/Makefile
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@ -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

45
drivers/smem/sandbox_smem.c Normal file
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@ -0,0 +1,45 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2018 Ramon Fried <ramon.fried@gmail.com>
*/
#include <common.h>
#include <dm.h>
#include <errno.h>
#include <smem.h>
#include <asm/test.h>
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 = &sandbox_smem_ops,
};