Add a virtual DFU backend to allow board specific read and write
(for OTP update for example).
Signed-off-by: Patrick Delaunay <patrick.delau...@st.com>
---
drivers/dfu/Kconfig | 7 ++++++
drivers/dfu/Makefile | 1 +
drivers/dfu/dfu.c | 5 ++++-
drivers/dfu/dfu_virt.c | 49 ++++++++++++++++++++++++++++++++++++++++++
include/dfu.h | 22 +++++++++++++++++++
5 files changed, 83 insertions(+), 1 deletion(-)
create mode 100644 drivers/dfu/dfu_virt.c
diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig
index ee664a331b..c0e6e5d8f0 100644
--- a/drivers/dfu/Kconfig
+++ b/drivers/dfu/Kconfig
@@ -52,5 +52,12 @@ config DFU_MTD
help
This option enables using DFU to read and write to on any MTD device.
+config DFU_VIRT
+ bool "VIRTUAL flash back end for DFU"
+ help
+ This option enables using DFU to read and write to VIRTUAL device
+ used at board level to manage specific behavior
+ (OTP update for example).
+
endif
endmenu
diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile
index ebb119f398..0d7925c083 100644
--- a/drivers/dfu/Makefile
+++ b/drivers/dfu/Makefile
@@ -10,3 +10,4 @@ obj-$(CONFIG_$(SPL_)DFU_NAND) += dfu_nand.o
obj-$(CONFIG_$(SPL_)DFU_RAM) += dfu_ram.o
obj-$(CONFIG_$(SPL_)DFU_SF) += dfu_sf.o
obj-$(CONFIG_$(SPL_)DFU_TFTP) += dfu_tftp.o
+obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o
diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c
index 4f4a07b790..2697235c24 100644
--- a/drivers/dfu/dfu.c
+++ b/drivers/dfu/dfu.c
@@ -474,6 +474,9 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s,
int alt,
} else if (strcmp(interface, "sf") == 0) {
if (dfu_fill_entity_sf(dfu, devstr, s))
return -1;
+ } else if (strcmp(interface, "virt") == 0) {
+ if (dfu_fill_entity_virt(dfu, devstr, s))
+ return -1;
} else {
printf("%s: Device %s not (yet) supported!\n",
__func__, interface);
@@ -569,7 +572,7 @@ int dfu_config_entities(char *env, char *interface, char
*devstr)
const char *dfu_get_dev_type(enum dfu_device_type t)
{
const char *const dev_t[] = {NULL, "eMMC", "OneNAND", "NAND", "RAM",
- "SF", "MTD"};
+ "SF", "MTD", "VIRT"};
return dev_t[t];
}
diff --git a/drivers/dfu/dfu_virt.c b/drivers/dfu/dfu_virt.c
new file mode 100644
index 0000000000..ea8c71f100
--- /dev/null
+++ b/drivers/dfu/dfu_virt.c
@@ -0,0 +1,49 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2019, STMicroelectronics - All Rights Reserved
+ */
+#include <common.h>
+#include <dfu.h>
+#include <errno.h>
+#include <malloc.h>
+
+int __weak dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset,
+ void *buf, long *len)
+{
+ debug("%s: off=0x%llx, len=0x%x\n", __func__, offset, (u32)*len);
+
+ return 0;
+}
+
+int __weak dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size)
+{
+ *size = 0;
+
+ return 0;
+}
+
+int __weak dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
+ void *buf, long *len)
+{
+ debug("%s: off=0x%llx, len=0x%x\n", __func__, offset, (u32)*len);
+ *len = 0;
+
+ return 0;
+}
+
+int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, char *s)
+{
+ debug("%s: devstr = %s\n", __func__, devstr);
+
+ dfu->dev_type = DFU_DEV_VIRT;
+ dfu->layout = DFU_RAW_ADDR;
+ dfu->data.virt.dev_num = simple_strtoul(devstr, NULL, 10);
+
+ dfu->write_medium = dfu_write_medium_virt;
+ dfu->get_medium_size = dfu_get_medium_size_virt;
+ dfu->read_medium = dfu_read_medium_virt;
+
+ dfu->inited = 0;
+
+ return 0;
+}
diff --git a/include/dfu.h b/include/dfu.h
index a90732cc43..4de7d35914 100644
--- a/include/dfu.h
+++ b/include/dfu.h
@@ -23,6 +23,7 @@ enum dfu_device_type {
DFU_DEV_RAM,
DFU_DEV_SF,
DFU_DEV_MTD,
+ DFU_DEV_VIRT,
};
enum dfu_layout {
@@ -92,6 +93,10 @@ struct sf_internal_data {
unsigned int ubi;
};
+struct virt_internal_data {
+ int dev_num;
+};
+
#define DFU_NAME_SIZE 32
#ifndef CONFIG_SYS_DFU_DATA_BUF_SIZE
#define CONFIG_SYS_DFU_DATA_BUF_SIZE (1024*1024*8) /* 8 MiB */
@@ -120,6 +125,7 @@ struct dfu_entity {
struct nand_internal_data nand;
struct ram_internal_data ram;
struct sf_internal_data sf;
+ struct virt_internal_data virt;
} data;
int (*get_medium_size)(struct dfu_entity *dfu, u64 *size);
@@ -272,6 +278,22 @@ static inline int dfu_fill_entity_mtd(struct dfu_entity
*dfu, char *devstr,
}
#endif
+#ifdef CONFIG_DFU_VIRT
+int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, char *s);
+int dfu_write_medium_virt(struct dfu_entity *dfu, u64 offset,
+ void *buf, long *len);
+int dfu_get_medium_size_virt(struct dfu_entity *dfu, u64 *size);
+int dfu_read_medium_virt(struct dfu_entity *dfu, u64 offset,
+ void *buf, long *len);
+#else
+static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr,
+ char *s)
+{
+ puts("VIRT support not available!\n");
+ return -1;
+}
+#endif
+
/**
* dfu_tftp_write - Write TFTP data to DFU medium
*
--
2.17.1
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