From mboxrd@z Thu Jan 1 00:00:00 1970 From: Patrick Delaunay Date: Fri, 19 Jul 2019 14:57:20 +0200 Subject: [U-Boot] [RFC PATCH 08/14] dfu: add DFU virtual backend In-Reply-To: <1563541046-6432-1-git-send-email-patrick.delaunay@st.com> References: <1563541046-6432-1-git-send-email-patrick.delaunay@st.com> Message-ID: <1563541046-6432-9-git-send-email-patrick.delaunay@st.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Add a virtual DFU backend to allow board specific read and write (for OTP update for example). Signed-off-by: Patrick Delaunay --- 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 ee664a3..c0e6e5d 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 ebb119f..0d7925c 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 ab7fdc0..a960b6e 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -473,6 +473,9 @@ 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); @@ -568,7 +571,7 @@ 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 0000000..ea8c71f --- /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 +#include +#include +#include + +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 a90732c..4de7d35 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 * -- 2.7.4