| Message ID | 20241012-b4-qcom-capsule-updates-v4-1-abd05f15255f@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | qcom: implement capsule updates | expand |
Hi Caleb, Thank you for the patch. On sam., oct. 12, 2024 at 15:57, Caleb Connolly <caleb.connolly@linaro.org> wrote: > This is extremely similar to the MMC backend, but there are some notable > differences. > > Works with a DFU string like > > scsi 4=u-boot-bin part 11 > > Where "4" is the SCSI dev number (sequential LUN across all SCSI devices) > and "11" is the partition number. > > Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> > --- > doc/usage/dfu.rst | 32 ++++ > drivers/dfu/Kconfig | 7 + > drivers/dfu/Makefile | 1 + > drivers/dfu/dfu.c | 5 +- > drivers/dfu/dfu_scsi.c | 435 +++++++++++++++++++++++++++++++++++++++++++++++++ > include/dfu.h | 27 +++ > 6 files changed, 506 insertions(+), 1 deletion(-) > > diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst > index 8cc09c308d82..f497dcf137a4 100644 > --- a/doc/usage/dfu.rst > +++ b/doc/usage/dfu.rst > @@ -21,8 +21,9 @@ U-Boot implements this DFU capability (CONFIG_DFU) with the command dfu > > Today the supported DFU backends are: > > - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) > +- SCSI (UFS, RAW partition, FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) > - NAND > - RAM > - SF (serial flash) > - MTD (all MTD device: NAND, SPI-NOR, SPI-NAND,...) > @@ -166,8 +167,38 @@ mmc > > Please note that this means the user will be able to execute any > arbitrary commands just like in the u-boot's shell. Can we please add CONFIG_DFU_SCSI in "Configuration Options" section at the beginning of this document? See: https://docs.u-boot.org/en/latest/usage/dfu.html#configuration-options Note: I requested that on v3 here: https://lore.kernel.org/all/87zfs11999.fsf@baylibre.com/ And on v2: here: https://lore.kernel.org/all/87o7a94pe1.fsf@baylibre.com/ With above addressed, feel free to add: Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> And please take this through your tree: Acked-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> > > +scsi > + for UFS storage:: > + > + dfu 0 scsi <dev> > + > + each element in *dfu_alt_info* being > + > + * <name> raw <offset> <size> raw access to SCSI LUN > + * <name> part <part_id> raw access to partition > + * <name> fat <part_id> file in FAT partition > + * <name> ext4 <part_id> file in EXT4 partition > + * <name> skip 0 0 ignore flashed data > + * <name> script 0 0 execute commands in shell > + > + with > + > + size > + is the size of the access area (hexadecimal without "0x") > + or 0 which means whole device > + partid > + is the GPT or DOS partition index. > + dev > + is the SCSI LU (Logical Unit) index (decimal only) > + > + A value of environment variable *dfu_alt_info* for UFS could be:: > + > + u-boot part 4;bl2 raw 0x1e 0x1d > + > + See mmc section above for details on the skip and script types. > + > nand > raw slc nand device:: > > dfu 0 nand <dev> > @@ -277,8 +308,9 @@ alternate list separated by '&' with the same format for each <alt>:: > > mmc <dev>=<alt1>;....;<altN> > nand <dev>=<alt1>;....;<altN> > ram <dev>=<alt1>;....;<altN> > + scsi <dev>=<alt1>;....;<altN> > sf <dev>=<alt1>;....;<altN> > mtd <dev>=<alt1>;....;<altN> > virt <dev>=<alt1>;....;<altN> > > diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig > index aadd7e8cf7f0..3f1a8c4617cd 100644 > --- a/drivers/dfu/Kconfig > +++ b/drivers/dfu/Kconfig > @@ -87,8 +87,15 @@ config DFU_VIRT > This option enables using DFU to read and write to VIRTUAL device > used at board level to manage specific behavior > (OTP update for example). > > +config DFU_SCSI > + bool "SCSI flash back end for DFU" > + help > + This option enables using DFU to read and write to SCSI devices > + used at board level to manage specific behavior > + (OTP update for example). > + > config SET_DFU_ALT_INFO > bool "Dynamic set of DFU alternate information" > help > This option allows to call the function set_dfu_alt_info to > diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile > index dfbf64da6677..3b3ba0994b3a 100644 > --- a/drivers/dfu/Makefile > +++ b/drivers/dfu/Makefile > @@ -10,4 +10,5 @@ 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_WRITE_ALT) += dfu_alt.o > obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o > +obj-$(CONFIG_$(SPL_)DFU_SCSI) += dfu_scsi.o > diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c > index 7a4d7ba2a7ff..756569217bbb 100644 > --- a/drivers/dfu/dfu.c > +++ b/drivers/dfu/dfu.c > @@ -563,8 +563,11 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt, > return -1; > } else if (strcmp(interface, "virt") == 0) { > if (dfu_fill_entity_virt(dfu, devstr, argv, argc)) > return -1; > + } else if (strcmp(interface, "scsi") == 0) { > + if (dfu_fill_entity_scsi(dfu, devstr, argv, argc)) > + return -1; > } else { > printf("%s: Device %s not (yet) supported!\n", > __func__, interface); > return -1; > @@ -659,9 +662,9 @@ 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", "VIRT"}; > + "SF", "MTD", "VIRT", "SCSI"}; > return dev_t[t]; > } > > const char *dfu_get_layout(enum dfu_layout l) > diff --git a/drivers/dfu/dfu_scsi.c b/drivers/dfu/dfu_scsi.c > new file mode 100644 > index 000000000000..9f95194784c1 > --- /dev/null > +++ b/drivers/dfu/dfu_scsi.c > @@ -0,0 +1,435 @@ > +// SPDX-License-Identifier: GPL-2.0+ > +/* > + * DFU SCSI backend (based on MMC backend). > + * > + * Copyright (C) 2012 Samsung Electronics > + * author: Lukasz Majewski <l.majewski@samsung.com> > + * Copyright (C) 2024 Linaro Ltd. > + */ > + > +#include <log.h> > +#include <malloc.h> > +#include <errno.h> > +#include <div64.h> > +#include <dfu.h> > +#include <ext4fs.h> > +#include <fat.h> > +#include <scsi.h> > +#include <part.h> > +#include <command.h> > +#include <linux/printk.h> > + > +static unsigned char *dfu_file_buf; > +static u64 dfu_file_buf_len; > +static u64 dfu_file_buf_offset; > + > +#define scsi_get_blk_desc(dev) ((struct blk_desc *)dev_get_uclass_plat(dev)) > + > +#define find_scsi_device(dev_num, scsi) blk_get_device(UCLASS_SCSI, dev_num, scsi) > + > +static int scsi_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) > +{ > + struct udevice *scsi; > + u32 blk_start, blk_count, n = 0; > + int ret; > + > + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); > + if (ret < 0) { > + pr_err("Device scsi %d - not found!", dfu->data.scsi.lun); > + return -ENODEV; > + } > + > + /* > + * We must ensure that we work in lba_blk_size chunks, so ALIGN > + * this value. > + */ > + *len = ALIGN(*len, dfu->data.scsi.lba_blk_size); > + > + blk_start = dfu->data.scsi.lba_start + (u32)lldiv(offset, dfu->data.scsi.lba_blk_size); > + blk_count = *len / dfu->data.scsi.lba_blk_size; > + if (blk_start + blk_count > dfu->data.scsi.lba_start + dfu->data.scsi.lba_size) { > + puts("Request would exceed designated area!\n"); > + return -EINVAL; > + } > + > + debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__, > + op == DFU_OP_READ ? "scsi READ" : "scsi WRITE", dfu->data.scsi.lun, blk_start, > + blk_count, buf); > + switch (op) { > + case DFU_OP_READ: > + n = blk_dread(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); > + break; > + case DFU_OP_WRITE: > + n = blk_dwrite(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); > + break; > + default: > + pr_err("Operation not supported\n"); > + } > + > + if (n != blk_count) { > + pr_err("scsi block operation failed"); > + return -EIO; > + } > + > + return 0; > +} > + > +static int scsi_file_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, u64 *len) > +{ > + char dev_part_str[8]; > + int ret; > + int fstype; > + loff_t size = 0; > + > + switch (dfu->layout) { > + case DFU_FS_FAT: > + fstype = FS_TYPE_FAT; > + break; > + case DFU_FS_EXT4: > + fstype = FS_TYPE_EXT; > + break; > + case DFU_SKIP: > + return 0; > + default: > + printf("%s: Layout (%s) not (yet) supported!\n", __func__, > + dfu_get_layout(dfu->layout)); > + return -1; > + } > + > + snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d", dfu->data.scsi.dev, > + dfu->data.scsi.part); > + > + ret = fs_set_blk_dev("scsi", dev_part_str, fstype); > + if (ret) { > + puts("dfu: fs_set_blk_dev error!\n"); > + return ret; > + } > + > + switch (op) { > + case DFU_OP_READ: > + ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size); > + if (ret) { > + puts("dfu: fs_read error!\n"); > + return ret; > + } > + *len = size; > + break; > + case DFU_OP_WRITE: > + ret = fs_write(dfu->name, (size_t)buf, offset, *len, &size); > + if (ret) { > + puts("dfu: fs_write error!\n"); > + return ret; > + } > + break; > + case DFU_OP_SIZE: > + ret = fs_size(dfu->name, &size); > + if (ret) { > + puts("dfu: fs_size error!\n"); > + return ret; > + } > + *len = size; > + break; > + default: > + return -1; > + } > + > + return ret; > +} > + > +static int scsi_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len) > +{ > + int ret = 0; > + > + if (offset == 0) { > + dfu_file_buf_len = 0; > + dfu_file_buf_offset = 0; > + } > + > + /* Add to the current buffer. */ > + if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) > + *len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len; > + memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len); > + dfu_file_buf_len += *len; > + > + if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) { > + ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, > + &dfu_file_buf_len); > + dfu_file_buf_offset += dfu_file_buf_len; > + dfu_file_buf_len = 0; > + } > + > + return ret; > +} > + > +static int scsi_file_buf_write_finish(struct dfu_entity *dfu) > +{ > + int ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, > + &dfu_file_buf_len); > + > + /* Now that we're done */ > + dfu_file_buf_len = 0; > + dfu_file_buf_offset = 0; > + > + return ret; > +} > + > +int dfu_write_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) > +{ > + int ret = -1; > + > + switch (dfu->layout) { > + case DFU_RAW_ADDR: > + ret = scsi_block_op(DFU_OP_WRITE, dfu, offset, buf, len); > + break; > + case DFU_FS_FAT: > + case DFU_FS_EXT4: > + ret = scsi_file_buf_write(dfu, offset, buf, len); > + break; > + case DFU_SCRIPT: > + ret = run_command_list(buf, *len, 0); > + break; > + case DFU_SKIP: > + ret = 0; > + break; > + default: > + printf("%s: Layout (%s) not (yet) supported!\n", __func__, > + dfu_get_layout(dfu->layout)); > + } > + > + return ret; > +} > + > +int dfu_flush_medium_scsi(struct dfu_entity *dfu) > +{ > + int ret = 0; > + > + switch (dfu->layout) { > + case DFU_FS_FAT: > + case DFU_FS_EXT4: > + ret = scsi_file_buf_write_finish(dfu); > + break; > + case DFU_SCRIPT: > + /* script may have changed the dfu_alt_info */ > + dfu_reinit_needed = true; > + break; > + case DFU_RAW_ADDR: > + case DFU_SKIP: > + break; > + default: > + printf("%s: Layout (%s) not (yet) supported!\n", __func__, > + dfu_get_layout(dfu->layout)); > + } > + > + return ret; > +} > + > +int dfu_get_medium_size_scsi(struct dfu_entity *dfu, u64 *size) > +{ > + int ret; > + > + switch (dfu->layout) { > + case DFU_RAW_ADDR: > + *size = dfu->data.scsi.lba_size * dfu->data.scsi.lba_blk_size; > + return 0; > + case DFU_FS_FAT: > + case DFU_FS_EXT4: > + ret = scsi_file_op(DFU_OP_SIZE, dfu, 0, NULL, size); > + if (ret < 0) > + return ret; > + return 0; > + case DFU_SCRIPT: > + case DFU_SKIP: > + return 0; > + default: > + printf("%s: Layout (%s) not (yet) supported!\n", __func__, > + dfu_get_layout(dfu->layout)); > + return -1; > + } > +} > + > +static int scsi_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf, long *len) > +{ > + int ret; > + > + if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len || > + offset + *len < dfu_file_buf_offset) { > + u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE; > + > + ret = scsi_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf, &file_len); > + if (ret < 0) > + return ret; > + dfu_file_buf_len = file_len; > + dfu_file_buf_offset = offset; > + } > + if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len) > + return -EINVAL; > + > + /* Add to the current buffer. */ > + memcpy(buf, dfu_file_buf + offset - dfu_file_buf_offset, *len); > + > + return 0; > +} > + > +int dfu_read_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) > +{ > + int ret = -1; > + > + switch (dfu->layout) { > + case DFU_RAW_ADDR: > + ret = scsi_block_op(DFU_OP_READ, dfu, offset, buf, len); > + break; > + case DFU_FS_FAT: > + case DFU_FS_EXT4: > + ret = scsi_file_buf_read(dfu, offset, buf, len); > + break; > + default: > + printf("%s: Layout (%s) not (yet) supported!\n", __func__, > + dfu_get_layout(dfu->layout)); > + } > + > + return ret; > +} > + > +void dfu_free_entity_scsi(struct dfu_entity *dfu) > +{ > + if (dfu_file_buf) { > + free(dfu_file_buf); > + dfu_file_buf = NULL; > + } > +} > + > +/* > + * @param s Parameter string containing space-separated arguments: > + * 1st: > + * raw (raw read/write) > + * fat (files) > + * ext4 (^) > + * part (partition image) > + * 2nd and 3rd: > + * lba_start and lba_size, for raw write > + * scsi_dev and scsi_part, for filesystems and part > + */ > +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, char **argv, int argc) > +{ > + const char *entity_type; > + ssize_t second_arg; > + ssize_t third_arg = -1; > + struct udevice *scsi; > + struct blk_desc *blk_dev; > + int ret; > + char *s; > + > + if (argc < 2) { > + pr_err("Need at least one argument\n"); > + return -EINVAL; > + } > + > + dfu->data.scsi.lun = dectoul(devstr, &s); > + if (*s) > + return -EINVAL; > + > + entity_type = argv[0]; > + /* > + * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8, > + * with default 10. > + */ > + second_arg = simple_strtol(argv[1], &s, 0); > + if (*s) > + return -EINVAL; > + if (argc >= 3) { > + third_arg = simple_strtoul(argv[2], &s, 0); > + if (*s) > + return -EINVAL; > + } > + > + if (scsi_scan(false)) { > + pr_err("Couldn't init scsi device.\n"); > + return -ENODEV; > + } > + > + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); > + if (ret < 0) { > + pr_err("Couldn't find scsi device no. %d.\n", dfu->data.scsi.lun); > + return -ENODEV; > + } > + > + blk_dev = scsi_get_blk_desc(scsi); > + if (!blk_dev) { > + pr_err("Couldn't get block device for scsi device no. %d.\n", dfu->data.scsi.lun); > + return -ENODEV; > + } > + > + /* if it's NOT a raw write */ > + if (strcmp(entity_type, "raw")) { > + dfu->data.scsi.dev = (second_arg != -1) ? second_arg : dfu->data.scsi.lun; > + dfu->data.scsi.part = third_arg; > + } > + > + if (!strcmp(entity_type, "raw")) { > + dfu->layout = DFU_RAW_ADDR; > + dfu->data.scsi.lba_start = second_arg; > + if (third_arg < 0) { > + pr_err("raw requires two arguments\n"); > + return -EINVAL; > + } > + dfu->data.scsi.lba_size = third_arg; > + dfu->data.scsi.lba_blk_size = blk_dev->blksz; > + > + /* > + * In case the size is zero (i.e. scsi raw 0x10 0), > + * assume the user intends to use whole device. > + */ > + if (third_arg == 0) > + dfu->data.scsi.lba_size = blk_dev->lba; > + > + } else if (!strcmp(entity_type, "part")) { > + struct disk_partition partinfo; > + int scsipart = second_arg; > + > + if (third_arg >= 0) { > + pr_err("part only accepts one argument\n"); > + return -EINVAL; > + } > + > + if (part_get_info(blk_dev, scsipart, &partinfo) != 0) { > + pr_err("Couldn't find part #%d on scsi device #%d\n", scsipart, > + dfu->data.scsi.lun); > + return -ENODEV; > + } > + > + dfu->layout = DFU_RAW_ADDR; > + dfu->data.scsi.lba_start = partinfo.start; > + dfu->data.scsi.lba_size = partinfo.size; > + dfu->data.scsi.lba_blk_size = partinfo.blksz; > + } else if (!strcmp(entity_type, "fat")) { > + dfu->layout = DFU_FS_FAT; > + } else if (!strcmp(entity_type, "ext4")) { > + dfu->layout = DFU_FS_EXT4; > + } else if (!strcmp(entity_type, "skip")) { > + dfu->layout = DFU_SKIP; > + } else if (!strcmp(entity_type, "script")) { > + dfu->layout = DFU_SCRIPT; > + } else { > + pr_err("Memory layout (%s) not supported!\n", entity_type); > + return -ENODEV; > + } > + > + dfu->dev_type = DFU_DEV_SCSI; > + dfu->get_medium_size = dfu_get_medium_size_scsi; > + dfu->read_medium = dfu_read_medium_scsi; > + dfu->write_medium = dfu_write_medium_scsi; > + dfu->flush_medium = dfu_flush_medium_scsi; > + dfu->inited = 0; > + dfu->free_entity = dfu_free_entity_scsi; > + > + /* Check if file buffer is ready */ > + if (!dfu_file_buf) { > + dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, CONFIG_SYS_DFU_MAX_FILE_SIZE); > + if (!dfu_file_buf) { > + pr_err("Could not memalign 0x%x bytes\n", CONFIG_SYS_DFU_MAX_FILE_SIZE); > + return -ENOMEM; > + } > + } > + > + return 0; > +} > diff --git a/include/dfu.h b/include/dfu.h > index e25588c33cb8..12f9dfcdfcdf 100644 > --- a/include/dfu.h > +++ b/include/dfu.h > @@ -23,8 +23,9 @@ enum dfu_device_type { > DFU_DEV_RAM, > DFU_DEV_SF, > DFU_DEV_MTD, > DFU_DEV_VIRT, > + DFU_DEV_SCSI, > }; > > enum dfu_layout { > DFU_RAW_ADDR = 1, > @@ -98,8 +99,21 @@ struct sf_internal_data { > struct virt_internal_data { > int dev_num; > }; > > +struct scsi_internal_data { > + int lun; > + > + /* RAW programming */ > + unsigned int lba_start; > + unsigned int lba_size; > + unsigned int lba_blk_size; > + > + /* FAT/EXT */ > + unsigned int dev; // Always 0??? > + unsigned int part; > +}; > + > #if defined(CONFIG_DFU_NAME_MAX_SIZE) > #define DFU_NAME_SIZE CONFIG_DFU_NAME_MAX_SIZE > #else > #define DFU_NAME_SIZE 32 > @@ -125,8 +139,9 @@ struct dfu_entity { > struct nand_internal_data nand; > struct ram_internal_data ram; > struct sf_internal_data sf; > struct virt_internal_data virt; > + struct scsi_internal_data scsi; > } data; > > int (*get_medium_size)(struct dfu_entity *dfu, u64 *size); > > @@ -515,8 +530,20 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, > return -1; > } > #endif > > +#if CONFIG_IS_ENABLED(DFU_SCSI) > +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, > + char **argv, int argc); > +#else > +static inline int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, > + char **argv, int argc) > +{ > + puts("SCSI support not available!\n"); > + return -1; > +} > +#endif > + > extern bool dfu_reinit_needed; > extern bool dfu_alt_info_changed; > > #if CONFIG_IS_ENABLED(DFU_WRITE_ALT) > > -- > 2.46.2
Hi Mattijs, On 15/10/2024 11:32, Mattijs Korpershoek wrote: > Hi Caleb, > > Thank you for the patch. > > On sam., oct. 12, 2024 at 15:57, Caleb Connolly <caleb.connolly@linaro.org> wrote: > >> This is extremely similar to the MMC backend, but there are some notable >> differences. >> >> Works with a DFU string like >> >> scsi 4=u-boot-bin part 11 >> >> Where "4" is the SCSI dev number (sequential LUN across all SCSI devices) >> and "11" is the partition number. >> >> Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> >> --- >> doc/usage/dfu.rst | 32 ++++ >> drivers/dfu/Kconfig | 7 + >> drivers/dfu/Makefile | 1 + >> drivers/dfu/dfu.c | 5 +- >> drivers/dfu/dfu_scsi.c | 435 +++++++++++++++++++++++++++++++++++++++++++++++++ >> include/dfu.h | 27 +++ >> 6 files changed, 506 insertions(+), 1 deletion(-) >> >> diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst >> index 8cc09c308d82..f497dcf137a4 100644 >> --- a/doc/usage/dfu.rst >> +++ b/doc/usage/dfu.rst >> @@ -21,8 +21,9 @@ U-Boot implements this DFU capability (CONFIG_DFU) with the command dfu >> >> Today the supported DFU backends are: >> >> - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) >> +- SCSI (UFS, RAW partition, FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) >> - NAND >> - RAM >> - SF (serial flash) >> - MTD (all MTD device: NAND, SPI-NOR, SPI-NAND,...) >> @@ -166,8 +167,38 @@ mmc >> >> Please note that this means the user will be able to execute any >> arbitrary commands just like in the u-boot's shell. > > Can we please add CONFIG_DFU_SCSI in "Configuration Options" section at > the beginning of this document? > > See: > https://docs.u-boot.org/en/latest/usage/dfu.html#configuration-options > > Note: I requested that on v3 here: > https://lore.kernel.org/all/87zfs11999.fsf@baylibre.com/ > > And on v2: here: > https://lore.kernel.org/all/87o7a94pe1.fsf@baylibre.com/ argh, im sure i made this change but the newer patch must have gotten lost somewhere :// so sorry about that. > > With above addressed, feel free to add: > Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> > > And please take this through your tree: > Acked-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> Thanks! > >> >> +scsi >> + for UFS storage:: >> + >> + dfu 0 scsi <dev> >> + >> + each element in *dfu_alt_info* being >> + >> + * <name> raw <offset> <size> raw access to SCSI LUN >> + * <name> part <part_id> raw access to partition >> + * <name> fat <part_id> file in FAT partition >> + * <name> ext4 <part_id> file in EXT4 partition >> + * <name> skip 0 0 ignore flashed data >> + * <name> script 0 0 execute commands in shell >> + >> + with >> + >> + size >> + is the size of the access area (hexadecimal without "0x") >> + or 0 which means whole device >> + partid >> + is the GPT or DOS partition index. >> + dev >> + is the SCSI LU (Logical Unit) index (decimal only) >> + >> + A value of environment variable *dfu_alt_info* for UFS could be:: >> + >> + u-boot part 4;bl2 raw 0x1e 0x1d >> + >> + See mmc section above for details on the skip and script types. >> + >> nand >> raw slc nand device:: >> >> dfu 0 nand <dev> >> @@ -277,8 +308,9 @@ alternate list separated by '&' with the same format for each <alt>:: >> >> mmc <dev>=<alt1>;....;<altN> >> nand <dev>=<alt1>;....;<altN> >> ram <dev>=<alt1>;....;<altN> >> + scsi <dev>=<alt1>;....;<altN> >> sf <dev>=<alt1>;....;<altN> >> mtd <dev>=<alt1>;....;<altN> >> virt <dev>=<alt1>;....;<altN> >> >> diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig >> index aadd7e8cf7f0..3f1a8c4617cd 100644 >> --- a/drivers/dfu/Kconfig >> +++ b/drivers/dfu/Kconfig >> @@ -87,8 +87,15 @@ config DFU_VIRT >> This option enables using DFU to read and write to VIRTUAL device >> used at board level to manage specific behavior >> (OTP update for example). >> >> +config DFU_SCSI >> + bool "SCSI flash back end for DFU" >> + help >> + This option enables using DFU to read and write to SCSI devices >> + used at board level to manage specific behavior >> + (OTP update for example). >> + >> config SET_DFU_ALT_INFO >> bool "Dynamic set of DFU alternate information" >> help >> This option allows to call the function set_dfu_alt_info to >> diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile >> index dfbf64da6677..3b3ba0994b3a 100644 >> --- a/drivers/dfu/Makefile >> +++ b/drivers/dfu/Makefile >> @@ -10,4 +10,5 @@ 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_WRITE_ALT) += dfu_alt.o >> obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o >> +obj-$(CONFIG_$(SPL_)DFU_SCSI) += dfu_scsi.o >> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c >> index 7a4d7ba2a7ff..756569217bbb 100644 >> --- a/drivers/dfu/dfu.c >> +++ b/drivers/dfu/dfu.c >> @@ -563,8 +563,11 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt, >> return -1; >> } else if (strcmp(interface, "virt") == 0) { >> if (dfu_fill_entity_virt(dfu, devstr, argv, argc)) >> return -1; >> + } else if (strcmp(interface, "scsi") == 0) { >> + if (dfu_fill_entity_scsi(dfu, devstr, argv, argc)) >> + return -1; >> } else { >> printf("%s: Device %s not (yet) supported!\n", >> __func__, interface); >> return -1; >> @@ -659,9 +662,9 @@ 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", "VIRT"}; >> + "SF", "MTD", "VIRT", "SCSI"}; >> return dev_t[t]; >> } >> >> const char *dfu_get_layout(enum dfu_layout l) >> diff --git a/drivers/dfu/dfu_scsi.c b/drivers/dfu/dfu_scsi.c >> new file mode 100644 >> index 000000000000..9f95194784c1 >> --- /dev/null >> +++ b/drivers/dfu/dfu_scsi.c >> @@ -0,0 +1,435 @@ >> +// SPDX-License-Identifier: GPL-2.0+ >> +/* >> + * DFU SCSI backend (based on MMC backend). >> + * >> + * Copyright (C) 2012 Samsung Electronics >> + * author: Lukasz Majewski <l.majewski@samsung.com> >> + * Copyright (C) 2024 Linaro Ltd. >> + */ >> + >> +#include <log.h> >> +#include <malloc.h> >> +#include <errno.h> >> +#include <div64.h> >> +#include <dfu.h> >> +#include <ext4fs.h> >> +#include <fat.h> >> +#include <scsi.h> >> +#include <part.h> >> +#include <command.h> >> +#include <linux/printk.h> >> + >> +static unsigned char *dfu_file_buf; >> +static u64 dfu_file_buf_len; >> +static u64 dfu_file_buf_offset; >> + >> +#define scsi_get_blk_desc(dev) ((struct blk_desc *)dev_get_uclass_plat(dev)) >> + >> +#define find_scsi_device(dev_num, scsi) blk_get_device(UCLASS_SCSI, dev_num, scsi) >> + >> +static int scsi_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) >> +{ >> + struct udevice *scsi; >> + u32 blk_start, blk_count, n = 0; >> + int ret; >> + >> + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); >> + if (ret < 0) { >> + pr_err("Device scsi %d - not found!", dfu->data.scsi.lun); >> + return -ENODEV; >> + } >> + >> + /* >> + * We must ensure that we work in lba_blk_size chunks, so ALIGN >> + * this value. >> + */ >> + *len = ALIGN(*len, dfu->data.scsi.lba_blk_size); >> + >> + blk_start = dfu->data.scsi.lba_start + (u32)lldiv(offset, dfu->data.scsi.lba_blk_size); >> + blk_count = *len / dfu->data.scsi.lba_blk_size; >> + if (blk_start + blk_count > dfu->data.scsi.lba_start + dfu->data.scsi.lba_size) { >> + puts("Request would exceed designated area!\n"); >> + return -EINVAL; >> + } >> + >> + debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__, >> + op == DFU_OP_READ ? "scsi READ" : "scsi WRITE", dfu->data.scsi.lun, blk_start, >> + blk_count, buf); >> + switch (op) { >> + case DFU_OP_READ: >> + n = blk_dread(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); >> + break; >> + case DFU_OP_WRITE: >> + n = blk_dwrite(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); >> + break; >> + default: >> + pr_err("Operation not supported\n"); >> + } >> + >> + if (n != blk_count) { >> + pr_err("scsi block operation failed"); >> + return -EIO; >> + } >> + >> + return 0; >> +} >> + >> +static int scsi_file_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, u64 *len) >> +{ >> + char dev_part_str[8]; >> + int ret; >> + int fstype; >> + loff_t size = 0; >> + >> + switch (dfu->layout) { >> + case DFU_FS_FAT: >> + fstype = FS_TYPE_FAT; >> + break; >> + case DFU_FS_EXT4: >> + fstype = FS_TYPE_EXT; >> + break; >> + case DFU_SKIP: >> + return 0; >> + default: >> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >> + dfu_get_layout(dfu->layout)); >> + return -1; >> + } >> + >> + snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d", dfu->data.scsi.dev, >> + dfu->data.scsi.part); >> + >> + ret = fs_set_blk_dev("scsi", dev_part_str, fstype); >> + if (ret) { >> + puts("dfu: fs_set_blk_dev error!\n"); >> + return ret; >> + } >> + >> + switch (op) { >> + case DFU_OP_READ: >> + ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size); >> + if (ret) { >> + puts("dfu: fs_read error!\n"); >> + return ret; >> + } >> + *len = size; >> + break; >> + case DFU_OP_WRITE: >> + ret = fs_write(dfu->name, (size_t)buf, offset, *len, &size); >> + if (ret) { >> + puts("dfu: fs_write error!\n"); >> + return ret; >> + } >> + break; >> + case DFU_OP_SIZE: >> + ret = fs_size(dfu->name, &size); >> + if (ret) { >> + puts("dfu: fs_size error!\n"); >> + return ret; >> + } >> + *len = size; >> + break; >> + default: >> + return -1; >> + } >> + >> + return ret; >> +} >> + >> +static int scsi_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >> +{ >> + int ret = 0; >> + >> + if (offset == 0) { >> + dfu_file_buf_len = 0; >> + dfu_file_buf_offset = 0; >> + } >> + >> + /* Add to the current buffer. */ >> + if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) >> + *len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len; >> + memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len); >> + dfu_file_buf_len += *len; >> + >> + if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) { >> + ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, >> + &dfu_file_buf_len); >> + dfu_file_buf_offset += dfu_file_buf_len; >> + dfu_file_buf_len = 0; >> + } >> + >> + return ret; >> +} >> + >> +static int scsi_file_buf_write_finish(struct dfu_entity *dfu) >> +{ >> + int ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, >> + &dfu_file_buf_len); >> + >> + /* Now that we're done */ >> + dfu_file_buf_len = 0; >> + dfu_file_buf_offset = 0; >> + >> + return ret; >> +} >> + >> +int dfu_write_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >> +{ >> + int ret = -1; >> + >> + switch (dfu->layout) { >> + case DFU_RAW_ADDR: >> + ret = scsi_block_op(DFU_OP_WRITE, dfu, offset, buf, len); >> + break; >> + case DFU_FS_FAT: >> + case DFU_FS_EXT4: >> + ret = scsi_file_buf_write(dfu, offset, buf, len); >> + break; >> + case DFU_SCRIPT: >> + ret = run_command_list(buf, *len, 0); >> + break; >> + case DFU_SKIP: >> + ret = 0; >> + break; >> + default: >> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >> + dfu_get_layout(dfu->layout)); >> + } >> + >> + return ret; >> +} >> + >> +int dfu_flush_medium_scsi(struct dfu_entity *dfu) >> +{ >> + int ret = 0; >> + >> + switch (dfu->layout) { >> + case DFU_FS_FAT: >> + case DFU_FS_EXT4: >> + ret = scsi_file_buf_write_finish(dfu); >> + break; >> + case DFU_SCRIPT: >> + /* script may have changed the dfu_alt_info */ >> + dfu_reinit_needed = true; >> + break; >> + case DFU_RAW_ADDR: >> + case DFU_SKIP: >> + break; >> + default: >> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >> + dfu_get_layout(dfu->layout)); >> + } >> + >> + return ret; >> +} >> + >> +int dfu_get_medium_size_scsi(struct dfu_entity *dfu, u64 *size) >> +{ >> + int ret; >> + >> + switch (dfu->layout) { >> + case DFU_RAW_ADDR: >> + *size = dfu->data.scsi.lba_size * dfu->data.scsi.lba_blk_size; >> + return 0; >> + case DFU_FS_FAT: >> + case DFU_FS_EXT4: >> + ret = scsi_file_op(DFU_OP_SIZE, dfu, 0, NULL, size); >> + if (ret < 0) >> + return ret; >> + return 0; >> + case DFU_SCRIPT: >> + case DFU_SKIP: >> + return 0; >> + default: >> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >> + dfu_get_layout(dfu->layout)); >> + return -1; >> + } >> +} >> + >> +static int scsi_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >> +{ >> + int ret; >> + >> + if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len || >> + offset + *len < dfu_file_buf_offset) { >> + u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE; >> + >> + ret = scsi_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf, &file_len); >> + if (ret < 0) >> + return ret; >> + dfu_file_buf_len = file_len; >> + dfu_file_buf_offset = offset; >> + } >> + if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len) >> + return -EINVAL; >> + >> + /* Add to the current buffer. */ >> + memcpy(buf, dfu_file_buf + offset - dfu_file_buf_offset, *len); >> + >> + return 0; >> +} >> + >> +int dfu_read_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >> +{ >> + int ret = -1; >> + >> + switch (dfu->layout) { >> + case DFU_RAW_ADDR: >> + ret = scsi_block_op(DFU_OP_READ, dfu, offset, buf, len); >> + break; >> + case DFU_FS_FAT: >> + case DFU_FS_EXT4: >> + ret = scsi_file_buf_read(dfu, offset, buf, len); >> + break; >> + default: >> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >> + dfu_get_layout(dfu->layout)); >> + } >> + >> + return ret; >> +} >> + >> +void dfu_free_entity_scsi(struct dfu_entity *dfu) >> +{ >> + if (dfu_file_buf) { >> + free(dfu_file_buf); >> + dfu_file_buf = NULL; >> + } >> +} >> + >> +/* >> + * @param s Parameter string containing space-separated arguments: >> + * 1st: >> + * raw (raw read/write) >> + * fat (files) >> + * ext4 (^) >> + * part (partition image) >> + * 2nd and 3rd: >> + * lba_start and lba_size, for raw write >> + * scsi_dev and scsi_part, for filesystems and part >> + */ >> +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, char **argv, int argc) >> +{ >> + const char *entity_type; >> + ssize_t second_arg; >> + ssize_t third_arg = -1; >> + struct udevice *scsi; >> + struct blk_desc *blk_dev; >> + int ret; >> + char *s; >> + >> + if (argc < 2) { >> + pr_err("Need at least one argument\n"); >> + return -EINVAL; >> + } >> + >> + dfu->data.scsi.lun = dectoul(devstr, &s); >> + if (*s) >> + return -EINVAL; >> + >> + entity_type = argv[0]; >> + /* >> + * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8, >> + * with default 10. >> + */ >> + second_arg = simple_strtol(argv[1], &s, 0); >> + if (*s) >> + return -EINVAL; >> + if (argc >= 3) { >> + third_arg = simple_strtoul(argv[2], &s, 0); >> + if (*s) >> + return -EINVAL; >> + } >> + >> + if (scsi_scan(false)) { >> + pr_err("Couldn't init scsi device.\n"); >> + return -ENODEV; >> + } >> + >> + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); >> + if (ret < 0) { >> + pr_err("Couldn't find scsi device no. %d.\n", dfu->data.scsi.lun); >> + return -ENODEV; >> + } >> + >> + blk_dev = scsi_get_blk_desc(scsi); >> + if (!blk_dev) { >> + pr_err("Couldn't get block device for scsi device no. %d.\n", dfu->data.scsi.lun); >> + return -ENODEV; >> + } >> + >> + /* if it's NOT a raw write */ >> + if (strcmp(entity_type, "raw")) { >> + dfu->data.scsi.dev = (second_arg != -1) ? second_arg : dfu->data.scsi.lun; >> + dfu->data.scsi.part = third_arg; >> + } >> + >> + if (!strcmp(entity_type, "raw")) { >> + dfu->layout = DFU_RAW_ADDR; >> + dfu->data.scsi.lba_start = second_arg; >> + if (third_arg < 0) { >> + pr_err("raw requires two arguments\n"); >> + return -EINVAL; >> + } >> + dfu->data.scsi.lba_size = third_arg; >> + dfu->data.scsi.lba_blk_size = blk_dev->blksz; >> + >> + /* >> + * In case the size is zero (i.e. scsi raw 0x10 0), >> + * assume the user intends to use whole device. >> + */ >> + if (third_arg == 0) >> + dfu->data.scsi.lba_size = blk_dev->lba; >> + >> + } else if (!strcmp(entity_type, "part")) { >> + struct disk_partition partinfo; >> + int scsipart = second_arg; >> + >> + if (third_arg >= 0) { >> + pr_err("part only accepts one argument\n"); >> + return -EINVAL; >> + } >> + >> + if (part_get_info(blk_dev, scsipart, &partinfo) != 0) { >> + pr_err("Couldn't find part #%d on scsi device #%d\n", scsipart, >> + dfu->data.scsi.lun); >> + return -ENODEV; >> + } >> + >> + dfu->layout = DFU_RAW_ADDR; >> + dfu->data.scsi.lba_start = partinfo.start; >> + dfu->data.scsi.lba_size = partinfo.size; >> + dfu->data.scsi.lba_blk_size = partinfo.blksz; >> + } else if (!strcmp(entity_type, "fat")) { >> + dfu->layout = DFU_FS_FAT; >> + } else if (!strcmp(entity_type, "ext4")) { >> + dfu->layout = DFU_FS_EXT4; >> + } else if (!strcmp(entity_type, "skip")) { >> + dfu->layout = DFU_SKIP; >> + } else if (!strcmp(entity_type, "script")) { >> + dfu->layout = DFU_SCRIPT; >> + } else { >> + pr_err("Memory layout (%s) not supported!\n", entity_type); >> + return -ENODEV; >> + } >> + >> + dfu->dev_type = DFU_DEV_SCSI; >> + dfu->get_medium_size = dfu_get_medium_size_scsi; >> + dfu->read_medium = dfu_read_medium_scsi; >> + dfu->write_medium = dfu_write_medium_scsi; >> + dfu->flush_medium = dfu_flush_medium_scsi; >> + dfu->inited = 0; >> + dfu->free_entity = dfu_free_entity_scsi; >> + >> + /* Check if file buffer is ready */ >> + if (!dfu_file_buf) { >> + dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, CONFIG_SYS_DFU_MAX_FILE_SIZE); >> + if (!dfu_file_buf) { >> + pr_err("Could not memalign 0x%x bytes\n", CONFIG_SYS_DFU_MAX_FILE_SIZE); >> + return -ENOMEM; >> + } >> + } >> + >> + return 0; >> +} >> diff --git a/include/dfu.h b/include/dfu.h >> index e25588c33cb8..12f9dfcdfcdf 100644 >> --- a/include/dfu.h >> +++ b/include/dfu.h >> @@ -23,8 +23,9 @@ enum dfu_device_type { >> DFU_DEV_RAM, >> DFU_DEV_SF, >> DFU_DEV_MTD, >> DFU_DEV_VIRT, >> + DFU_DEV_SCSI, >> }; >> >> enum dfu_layout { >> DFU_RAW_ADDR = 1, >> @@ -98,8 +99,21 @@ struct sf_internal_data { >> struct virt_internal_data { >> int dev_num; >> }; >> >> +struct scsi_internal_data { >> + int lun; >> + >> + /* RAW programming */ >> + unsigned int lba_start; >> + unsigned int lba_size; >> + unsigned int lba_blk_size; >> + >> + /* FAT/EXT */ >> + unsigned int dev; // Always 0??? >> + unsigned int part; >> +}; >> + >> #if defined(CONFIG_DFU_NAME_MAX_SIZE) >> #define DFU_NAME_SIZE CONFIG_DFU_NAME_MAX_SIZE >> #else >> #define DFU_NAME_SIZE 32 >> @@ -125,8 +139,9 @@ struct dfu_entity { >> struct nand_internal_data nand; >> struct ram_internal_data ram; >> struct sf_internal_data sf; >> struct virt_internal_data virt; >> + struct scsi_internal_data scsi; >> } data; >> >> int (*get_medium_size)(struct dfu_entity *dfu, u64 *size); >> >> @@ -515,8 +530,20 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, >> return -1; >> } >> #endif >> >> +#if CONFIG_IS_ENABLED(DFU_SCSI) >> +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, >> + char **argv, int argc); >> +#else >> +static inline int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, >> + char **argv, int argc) >> +{ >> + puts("SCSI support not available!\n"); >> + return -1; >> +} >> +#endif >> + >> extern bool dfu_reinit_needed; >> extern bool dfu_alt_info_changed; >> >> #if CONFIG_IS_ENABLED(DFU_WRITE_ALT) >> >> -- >> 2.46.2
On jeu., oct. 17, 2024 at 15:16, Caleb Connolly <caleb.connolly@linaro.org> wrote: > Hi Mattijs, > > On 15/10/2024 11:32, Mattijs Korpershoek wrote: >> Hi Caleb, >> >> Thank you for the patch. >> >> On sam., oct. 12, 2024 at 15:57, Caleb Connolly <caleb.connolly@linaro.org> wrote: >> >>> This is extremely similar to the MMC backend, but there are some notable >>> differences. >>> >>> Works with a DFU string like >>> >>> scsi 4=u-boot-bin part 11 >>> >>> Where "4" is the SCSI dev number (sequential LUN across all SCSI devices) >>> and "11" is the partition number. >>> >>> Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> >>> --- >>> doc/usage/dfu.rst | 32 ++++ >>> drivers/dfu/Kconfig | 7 + >>> drivers/dfu/Makefile | 1 + >>> drivers/dfu/dfu.c | 5 +- >>> drivers/dfu/dfu_scsi.c | 435 +++++++++++++++++++++++++++++++++++++++++++++++++ >>> include/dfu.h | 27 +++ >>> 6 files changed, 506 insertions(+), 1 deletion(-) >>> >>> diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst >>> index 8cc09c308d82..f497dcf137a4 100644 >>> --- a/doc/usage/dfu.rst >>> +++ b/doc/usage/dfu.rst >>> @@ -21,8 +21,9 @@ U-Boot implements this DFU capability (CONFIG_DFU) with the command dfu >>> >>> Today the supported DFU backends are: >>> >>> - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) >>> +- SCSI (UFS, RAW partition, FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) >>> - NAND >>> - RAM >>> - SF (serial flash) >>> - MTD (all MTD device: NAND, SPI-NOR, SPI-NAND,...) >>> @@ -166,8 +167,38 @@ mmc >>> >>> Please note that this means the user will be able to execute any >>> arbitrary commands just like in the u-boot's shell. >> >> Can we please add CONFIG_DFU_SCSI in "Configuration Options" section at >> the beginning of this document? >> >> See: >> https://docs.u-boot.org/en/latest/usage/dfu.html#configuration-options >> >> Note: I requested that on v3 here: >> https://lore.kernel.org/all/87zfs11999.fsf@baylibre.com/ >> >> And on v2: here: >> https://lore.kernel.org/all/87o7a94pe1.fsf@baylibre.com/ > > argh, im sure i made this change but the newer patch must have gotten > lost somewhere :// so sorry about that. No worries, stuff like this can happen! >> >> With above addressed, feel free to add: >> Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> >> >> And please take this through your tree: >> Acked-by: Mattijs Korpershoek <mkorpershoek@baylibre.com> > > Thanks! >> >>> >>> +scsi >>> + for UFS storage:: >>> + >>> + dfu 0 scsi <dev> >>> + >>> + each element in *dfu_alt_info* being >>> + >>> + * <name> raw <offset> <size> raw access to SCSI LUN >>> + * <name> part <part_id> raw access to partition >>> + * <name> fat <part_id> file in FAT partition >>> + * <name> ext4 <part_id> file in EXT4 partition >>> + * <name> skip 0 0 ignore flashed data >>> + * <name> script 0 0 execute commands in shell >>> + >>> + with >>> + >>> + size >>> + is the size of the access area (hexadecimal without "0x") >>> + or 0 which means whole device >>> + partid >>> + is the GPT or DOS partition index. >>> + dev >>> + is the SCSI LU (Logical Unit) index (decimal only) >>> + >>> + A value of environment variable *dfu_alt_info* for UFS could be:: >>> + >>> + u-boot part 4;bl2 raw 0x1e 0x1d >>> + >>> + See mmc section above for details on the skip and script types. >>> + >>> nand >>> raw slc nand device:: >>> >>> dfu 0 nand <dev> >>> @@ -277,8 +308,9 @@ alternate list separated by '&' with the same format for each <alt>:: >>> >>> mmc <dev>=<alt1>;....;<altN> >>> nand <dev>=<alt1>;....;<altN> >>> ram <dev>=<alt1>;....;<altN> >>> + scsi <dev>=<alt1>;....;<altN> >>> sf <dev>=<alt1>;....;<altN> >>> mtd <dev>=<alt1>;....;<altN> >>> virt <dev>=<alt1>;....;<altN> >>> >>> diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig >>> index aadd7e8cf7f0..3f1a8c4617cd 100644 >>> --- a/drivers/dfu/Kconfig >>> +++ b/drivers/dfu/Kconfig >>> @@ -87,8 +87,15 @@ config DFU_VIRT >>> This option enables using DFU to read and write to VIRTUAL device >>> used at board level to manage specific behavior >>> (OTP update for example). >>> >>> +config DFU_SCSI >>> + bool "SCSI flash back end for DFU" >>> + help >>> + This option enables using DFU to read and write to SCSI devices >>> + used at board level to manage specific behavior >>> + (OTP update for example). >>> + >>> config SET_DFU_ALT_INFO >>> bool "Dynamic set of DFU alternate information" >>> help >>> This option allows to call the function set_dfu_alt_info to >>> diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile >>> index dfbf64da6677..3b3ba0994b3a 100644 >>> --- a/drivers/dfu/Makefile >>> +++ b/drivers/dfu/Makefile >>> @@ -10,4 +10,5 @@ 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_WRITE_ALT) += dfu_alt.o >>> obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o >>> +obj-$(CONFIG_$(SPL_)DFU_SCSI) += dfu_scsi.o >>> diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c >>> index 7a4d7ba2a7ff..756569217bbb 100644 >>> --- a/drivers/dfu/dfu.c >>> +++ b/drivers/dfu/dfu.c >>> @@ -563,8 +563,11 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt, >>> return -1; >>> } else if (strcmp(interface, "virt") == 0) { >>> if (dfu_fill_entity_virt(dfu, devstr, argv, argc)) >>> return -1; >>> + } else if (strcmp(interface, "scsi") == 0) { >>> + if (dfu_fill_entity_scsi(dfu, devstr, argv, argc)) >>> + return -1; >>> } else { >>> printf("%s: Device %s not (yet) supported!\n", >>> __func__, interface); >>> return -1; >>> @@ -659,9 +662,9 @@ 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", "VIRT"}; >>> + "SF", "MTD", "VIRT", "SCSI"}; >>> return dev_t[t]; >>> } >>> >>> const char *dfu_get_layout(enum dfu_layout l) >>> diff --git a/drivers/dfu/dfu_scsi.c b/drivers/dfu/dfu_scsi.c >>> new file mode 100644 >>> index 000000000000..9f95194784c1 >>> --- /dev/null >>> +++ b/drivers/dfu/dfu_scsi.c >>> @@ -0,0 +1,435 @@ >>> +// SPDX-License-Identifier: GPL-2.0+ >>> +/* >>> + * DFU SCSI backend (based on MMC backend). >>> + * >>> + * Copyright (C) 2012 Samsung Electronics >>> + * author: Lukasz Majewski <l.majewski@samsung.com> >>> + * Copyright (C) 2024 Linaro Ltd. >>> + */ >>> + >>> +#include <log.h> >>> +#include <malloc.h> >>> +#include <errno.h> >>> +#include <div64.h> >>> +#include <dfu.h> >>> +#include <ext4fs.h> >>> +#include <fat.h> >>> +#include <scsi.h> >>> +#include <part.h> >>> +#include <command.h> >>> +#include <linux/printk.h> >>> + >>> +static unsigned char *dfu_file_buf; >>> +static u64 dfu_file_buf_len; >>> +static u64 dfu_file_buf_offset; >>> + >>> +#define scsi_get_blk_desc(dev) ((struct blk_desc *)dev_get_uclass_plat(dev)) >>> + >>> +#define find_scsi_device(dev_num, scsi) blk_get_device(UCLASS_SCSI, dev_num, scsi) >>> + >>> +static int scsi_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) >>> +{ >>> + struct udevice *scsi; >>> + u32 blk_start, blk_count, n = 0; >>> + int ret; >>> + >>> + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); >>> + if (ret < 0) { >>> + pr_err("Device scsi %d - not found!", dfu->data.scsi.lun); >>> + return -ENODEV; >>> + } >>> + >>> + /* >>> + * We must ensure that we work in lba_blk_size chunks, so ALIGN >>> + * this value. >>> + */ >>> + *len = ALIGN(*len, dfu->data.scsi.lba_blk_size); >>> + >>> + blk_start = dfu->data.scsi.lba_start + (u32)lldiv(offset, dfu->data.scsi.lba_blk_size); >>> + blk_count = *len / dfu->data.scsi.lba_blk_size; >>> + if (blk_start + blk_count > dfu->data.scsi.lba_start + dfu->data.scsi.lba_size) { >>> + puts("Request would exceed designated area!\n"); >>> + return -EINVAL; >>> + } >>> + >>> + debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__, >>> + op == DFU_OP_READ ? "scsi READ" : "scsi WRITE", dfu->data.scsi.lun, blk_start, >>> + blk_count, buf); >>> + switch (op) { >>> + case DFU_OP_READ: >>> + n = blk_dread(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); >>> + break; >>> + case DFU_OP_WRITE: >>> + n = blk_dwrite(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); >>> + break; >>> + default: >>> + pr_err("Operation not supported\n"); >>> + } >>> + >>> + if (n != blk_count) { >>> + pr_err("scsi block operation failed"); >>> + return -EIO; >>> + } >>> + >>> + return 0; >>> +} >>> + >>> +static int scsi_file_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, u64 *len) >>> +{ >>> + char dev_part_str[8]; >>> + int ret; >>> + int fstype; >>> + loff_t size = 0; >>> + >>> + switch (dfu->layout) { >>> + case DFU_FS_FAT: >>> + fstype = FS_TYPE_FAT; >>> + break; >>> + case DFU_FS_EXT4: >>> + fstype = FS_TYPE_EXT; >>> + break; >>> + case DFU_SKIP: >>> + return 0; >>> + default: >>> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >>> + dfu_get_layout(dfu->layout)); >>> + return -1; >>> + } >>> + >>> + snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d", dfu->data.scsi.dev, >>> + dfu->data.scsi.part); >>> + >>> + ret = fs_set_blk_dev("scsi", dev_part_str, fstype); >>> + if (ret) { >>> + puts("dfu: fs_set_blk_dev error!\n"); >>> + return ret; >>> + } >>> + >>> + switch (op) { >>> + case DFU_OP_READ: >>> + ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size); >>> + if (ret) { >>> + puts("dfu: fs_read error!\n"); >>> + return ret; >>> + } >>> + *len = size; >>> + break; >>> + case DFU_OP_WRITE: >>> + ret = fs_write(dfu->name, (size_t)buf, offset, *len, &size); >>> + if (ret) { >>> + puts("dfu: fs_write error!\n"); >>> + return ret; >>> + } >>> + break; >>> + case DFU_OP_SIZE: >>> + ret = fs_size(dfu->name, &size); >>> + if (ret) { >>> + puts("dfu: fs_size error!\n"); >>> + return ret; >>> + } >>> + *len = size; >>> + break; >>> + default: >>> + return -1; >>> + } >>> + >>> + return ret; >>> +} >>> + >>> +static int scsi_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >>> +{ >>> + int ret = 0; >>> + >>> + if (offset == 0) { >>> + dfu_file_buf_len = 0; >>> + dfu_file_buf_offset = 0; >>> + } >>> + >>> + /* Add to the current buffer. */ >>> + if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) >>> + *len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len; >>> + memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len); >>> + dfu_file_buf_len += *len; >>> + >>> + if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) { >>> + ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, >>> + &dfu_file_buf_len); >>> + dfu_file_buf_offset += dfu_file_buf_len; >>> + dfu_file_buf_len = 0; >>> + } >>> + >>> + return ret; >>> +} >>> + >>> +static int scsi_file_buf_write_finish(struct dfu_entity *dfu) >>> +{ >>> + int ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, >>> + &dfu_file_buf_len); >>> + >>> + /* Now that we're done */ >>> + dfu_file_buf_len = 0; >>> + dfu_file_buf_offset = 0; >>> + >>> + return ret; >>> +} >>> + >>> +int dfu_write_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >>> +{ >>> + int ret = -1; >>> + >>> + switch (dfu->layout) { >>> + case DFU_RAW_ADDR: >>> + ret = scsi_block_op(DFU_OP_WRITE, dfu, offset, buf, len); >>> + break; >>> + case DFU_FS_FAT: >>> + case DFU_FS_EXT4: >>> + ret = scsi_file_buf_write(dfu, offset, buf, len); >>> + break; >>> + case DFU_SCRIPT: >>> + ret = run_command_list(buf, *len, 0); >>> + break; >>> + case DFU_SKIP: >>> + ret = 0; >>> + break; >>> + default: >>> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >>> + dfu_get_layout(dfu->layout)); >>> + } >>> + >>> + return ret; >>> +} >>> + >>> +int dfu_flush_medium_scsi(struct dfu_entity *dfu) >>> +{ >>> + int ret = 0; >>> + >>> + switch (dfu->layout) { >>> + case DFU_FS_FAT: >>> + case DFU_FS_EXT4: >>> + ret = scsi_file_buf_write_finish(dfu); >>> + break; >>> + case DFU_SCRIPT: >>> + /* script may have changed the dfu_alt_info */ >>> + dfu_reinit_needed = true; >>> + break; >>> + case DFU_RAW_ADDR: >>> + case DFU_SKIP: >>> + break; >>> + default: >>> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >>> + dfu_get_layout(dfu->layout)); >>> + } >>> + >>> + return ret; >>> +} >>> + >>> +int dfu_get_medium_size_scsi(struct dfu_entity *dfu, u64 *size) >>> +{ >>> + int ret; >>> + >>> + switch (dfu->layout) { >>> + case DFU_RAW_ADDR: >>> + *size = dfu->data.scsi.lba_size * dfu->data.scsi.lba_blk_size; >>> + return 0; >>> + case DFU_FS_FAT: >>> + case DFU_FS_EXT4: >>> + ret = scsi_file_op(DFU_OP_SIZE, dfu, 0, NULL, size); >>> + if (ret < 0) >>> + return ret; >>> + return 0; >>> + case DFU_SCRIPT: >>> + case DFU_SKIP: >>> + return 0; >>> + default: >>> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >>> + dfu_get_layout(dfu->layout)); >>> + return -1; >>> + } >>> +} >>> + >>> +static int scsi_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >>> +{ >>> + int ret; >>> + >>> + if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len || >>> + offset + *len < dfu_file_buf_offset) { >>> + u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE; >>> + >>> + ret = scsi_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf, &file_len); >>> + if (ret < 0) >>> + return ret; >>> + dfu_file_buf_len = file_len; >>> + dfu_file_buf_offset = offset; >>> + } >>> + if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len) >>> + return -EINVAL; >>> + >>> + /* Add to the current buffer. */ >>> + memcpy(buf, dfu_file_buf + offset - dfu_file_buf_offset, *len); >>> + >>> + return 0; >>> +} >>> + >>> +int dfu_read_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) >>> +{ >>> + int ret = -1; >>> + >>> + switch (dfu->layout) { >>> + case DFU_RAW_ADDR: >>> + ret = scsi_block_op(DFU_OP_READ, dfu, offset, buf, len); >>> + break; >>> + case DFU_FS_FAT: >>> + case DFU_FS_EXT4: >>> + ret = scsi_file_buf_read(dfu, offset, buf, len); >>> + break; >>> + default: >>> + printf("%s: Layout (%s) not (yet) supported!\n", __func__, >>> + dfu_get_layout(dfu->layout)); >>> + } >>> + >>> + return ret; >>> +} >>> + >>> +void dfu_free_entity_scsi(struct dfu_entity *dfu) >>> +{ >>> + if (dfu_file_buf) { >>> + free(dfu_file_buf); >>> + dfu_file_buf = NULL; >>> + } >>> +} >>> + >>> +/* >>> + * @param s Parameter string containing space-separated arguments: >>> + * 1st: >>> + * raw (raw read/write) >>> + * fat (files) >>> + * ext4 (^) >>> + * part (partition image) >>> + * 2nd and 3rd: >>> + * lba_start and lba_size, for raw write >>> + * scsi_dev and scsi_part, for filesystems and part >>> + */ >>> +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, char **argv, int argc) >>> +{ >>> + const char *entity_type; >>> + ssize_t second_arg; >>> + ssize_t third_arg = -1; >>> + struct udevice *scsi; >>> + struct blk_desc *blk_dev; >>> + int ret; >>> + char *s; >>> + >>> + if (argc < 2) { >>> + pr_err("Need at least one argument\n"); >>> + return -EINVAL; >>> + } >>> + >>> + dfu->data.scsi.lun = dectoul(devstr, &s); >>> + if (*s) >>> + return -EINVAL; >>> + >>> + entity_type = argv[0]; >>> + /* >>> + * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8, >>> + * with default 10. >>> + */ >>> + second_arg = simple_strtol(argv[1], &s, 0); >>> + if (*s) >>> + return -EINVAL; >>> + if (argc >= 3) { >>> + third_arg = simple_strtoul(argv[2], &s, 0); >>> + if (*s) >>> + return -EINVAL; >>> + } >>> + >>> + if (scsi_scan(false)) { >>> + pr_err("Couldn't init scsi device.\n"); >>> + return -ENODEV; >>> + } >>> + >>> + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); >>> + if (ret < 0) { >>> + pr_err("Couldn't find scsi device no. %d.\n", dfu->data.scsi.lun); >>> + return -ENODEV; >>> + } >>> + >>> + blk_dev = scsi_get_blk_desc(scsi); >>> + if (!blk_dev) { >>> + pr_err("Couldn't get block device for scsi device no. %d.\n", dfu->data.scsi.lun); >>> + return -ENODEV; >>> + } >>> + >>> + /* if it's NOT a raw write */ >>> + if (strcmp(entity_type, "raw")) { >>> + dfu->data.scsi.dev = (second_arg != -1) ? second_arg : dfu->data.scsi.lun; >>> + dfu->data.scsi.part = third_arg; >>> + } >>> + >>> + if (!strcmp(entity_type, "raw")) { >>> + dfu->layout = DFU_RAW_ADDR; >>> + dfu->data.scsi.lba_start = second_arg; >>> + if (third_arg < 0) { >>> + pr_err("raw requires two arguments\n"); >>> + return -EINVAL; >>> + } >>> + dfu->data.scsi.lba_size = third_arg; >>> + dfu->data.scsi.lba_blk_size = blk_dev->blksz; >>> + >>> + /* >>> + * In case the size is zero (i.e. scsi raw 0x10 0), >>> + * assume the user intends to use whole device. >>> + */ >>> + if (third_arg == 0) >>> + dfu->data.scsi.lba_size = blk_dev->lba; >>> + >>> + } else if (!strcmp(entity_type, "part")) { >>> + struct disk_partition partinfo; >>> + int scsipart = second_arg; >>> + >>> + if (third_arg >= 0) { >>> + pr_err("part only accepts one argument\n"); >>> + return -EINVAL; >>> + } >>> + >>> + if (part_get_info(blk_dev, scsipart, &partinfo) != 0) { >>> + pr_err("Couldn't find part #%d on scsi device #%d\n", scsipart, >>> + dfu->data.scsi.lun); >>> + return -ENODEV; >>> + } >>> + >>> + dfu->layout = DFU_RAW_ADDR; >>> + dfu->data.scsi.lba_start = partinfo.start; >>> + dfu->data.scsi.lba_size = partinfo.size; >>> + dfu->data.scsi.lba_blk_size = partinfo.blksz; >>> + } else if (!strcmp(entity_type, "fat")) { >>> + dfu->layout = DFU_FS_FAT; >>> + } else if (!strcmp(entity_type, "ext4")) { >>> + dfu->layout = DFU_FS_EXT4; >>> + } else if (!strcmp(entity_type, "skip")) { >>> + dfu->layout = DFU_SKIP; >>> + } else if (!strcmp(entity_type, "script")) { >>> + dfu->layout = DFU_SCRIPT; >>> + } else { >>> + pr_err("Memory layout (%s) not supported!\n", entity_type); >>> + return -ENODEV; >>> + } >>> + >>> + dfu->dev_type = DFU_DEV_SCSI; >>> + dfu->get_medium_size = dfu_get_medium_size_scsi; >>> + dfu->read_medium = dfu_read_medium_scsi; >>> + dfu->write_medium = dfu_write_medium_scsi; >>> + dfu->flush_medium = dfu_flush_medium_scsi; >>> + dfu->inited = 0; >>> + dfu->free_entity = dfu_free_entity_scsi; >>> + >>> + /* Check if file buffer is ready */ >>> + if (!dfu_file_buf) { >>> + dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, CONFIG_SYS_DFU_MAX_FILE_SIZE); >>> + if (!dfu_file_buf) { >>> + pr_err("Could not memalign 0x%x bytes\n", CONFIG_SYS_DFU_MAX_FILE_SIZE); >>> + return -ENOMEM; >>> + } >>> + } >>> + >>> + return 0; >>> +} >>> diff --git a/include/dfu.h b/include/dfu.h >>> index e25588c33cb8..12f9dfcdfcdf 100644 >>> --- a/include/dfu.h >>> +++ b/include/dfu.h >>> @@ -23,8 +23,9 @@ enum dfu_device_type { >>> DFU_DEV_RAM, >>> DFU_DEV_SF, >>> DFU_DEV_MTD, >>> DFU_DEV_VIRT, >>> + DFU_DEV_SCSI, >>> }; >>> >>> enum dfu_layout { >>> DFU_RAW_ADDR = 1, >>> @@ -98,8 +99,21 @@ struct sf_internal_data { >>> struct virt_internal_data { >>> int dev_num; >>> }; >>> >>> +struct scsi_internal_data { >>> + int lun; >>> + >>> + /* RAW programming */ >>> + unsigned int lba_start; >>> + unsigned int lba_size; >>> + unsigned int lba_blk_size; >>> + >>> + /* FAT/EXT */ >>> + unsigned int dev; // Always 0??? >>> + unsigned int part; >>> +}; >>> + >>> #if defined(CONFIG_DFU_NAME_MAX_SIZE) >>> #define DFU_NAME_SIZE CONFIG_DFU_NAME_MAX_SIZE >>> #else >>> #define DFU_NAME_SIZE 32 >>> @@ -125,8 +139,9 @@ struct dfu_entity { >>> struct nand_internal_data nand; >>> struct ram_internal_data ram; >>> struct sf_internal_data sf; >>> struct virt_internal_data virt; >>> + struct scsi_internal_data scsi; >>> } data; >>> >>> int (*get_medium_size)(struct dfu_entity *dfu, u64 *size); >>> >>> @@ -515,8 +530,20 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, >>> return -1; >>> } >>> #endif >>> >>> +#if CONFIG_IS_ENABLED(DFU_SCSI) >>> +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, >>> + char **argv, int argc); >>> +#else >>> +static inline int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, >>> + char **argv, int argc) >>> +{ >>> + puts("SCSI support not available!\n"); >>> + return -1; >>> +} >>> +#endif >>> + >>> extern bool dfu_reinit_needed; >>> extern bool dfu_alt_info_changed; >>> >>> #if CONFIG_IS_ENABLED(DFU_WRITE_ALT) >>> >>> -- >>> 2.46.2 > > -- > // Caleb (they/them)
diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst index 8cc09c308d82..f497dcf137a4 100644 --- a/doc/usage/dfu.rst +++ b/doc/usage/dfu.rst @@ -21,8 +21,9 @@ U-Boot implements this DFU capability (CONFIG_DFU) with the command dfu Today the supported DFU backends are: - MMC (RAW or FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) +- SCSI (UFS, RAW partition, FAT / EXT2 / EXT3 / EXT4 file system / SKIP / SCRIPT) - NAND - RAM - SF (serial flash) - MTD (all MTD device: NAND, SPI-NOR, SPI-NAND,...) @@ -166,8 +167,38 @@ mmc Please note that this means the user will be able to execute any arbitrary commands just like in the u-boot's shell. +scsi + for UFS storage:: + + dfu 0 scsi <dev> + + each element in *dfu_alt_info* being + + * <name> raw <offset> <size> raw access to SCSI LUN + * <name> part <part_id> raw access to partition + * <name> fat <part_id> file in FAT partition + * <name> ext4 <part_id> file in EXT4 partition + * <name> skip 0 0 ignore flashed data + * <name> script 0 0 execute commands in shell + + with + + size + is the size of the access area (hexadecimal without "0x") + or 0 which means whole device + partid + is the GPT or DOS partition index. + dev + is the SCSI LU (Logical Unit) index (decimal only) + + A value of environment variable *dfu_alt_info* for UFS could be:: + + u-boot part 4;bl2 raw 0x1e 0x1d + + See mmc section above for details on the skip and script types. + nand raw slc nand device:: dfu 0 nand <dev> @@ -277,8 +308,9 @@ alternate list separated by '&' with the same format for each <alt>:: mmc <dev>=<alt1>;....;<altN> nand <dev>=<alt1>;....;<altN> ram <dev>=<alt1>;....;<altN> + scsi <dev>=<alt1>;....;<altN> sf <dev>=<alt1>;....;<altN> mtd <dev>=<alt1>;....;<altN> virt <dev>=<alt1>;....;<altN> diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig index aadd7e8cf7f0..3f1a8c4617cd 100644 --- a/drivers/dfu/Kconfig +++ b/drivers/dfu/Kconfig @@ -87,8 +87,15 @@ config DFU_VIRT This option enables using DFU to read and write to VIRTUAL device used at board level to manage specific behavior (OTP update for example). +config DFU_SCSI + bool "SCSI flash back end for DFU" + help + This option enables using DFU to read and write to SCSI devices + used at board level to manage specific behavior + (OTP update for example). + config SET_DFU_ALT_INFO bool "Dynamic set of DFU alternate information" help This option allows to call the function set_dfu_alt_info to diff --git a/drivers/dfu/Makefile b/drivers/dfu/Makefile index dfbf64da6677..3b3ba0994b3a 100644 --- a/drivers/dfu/Makefile +++ b/drivers/dfu/Makefile @@ -10,4 +10,5 @@ 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_WRITE_ALT) += dfu_alt.o obj-$(CONFIG_$(SPL_)DFU_VIRT) += dfu_virt.o +obj-$(CONFIG_$(SPL_)DFU_SCSI) += dfu_scsi.o diff --git a/drivers/dfu/dfu.c b/drivers/dfu/dfu.c index 7a4d7ba2a7ff..756569217bbb 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -563,8 +563,11 @@ static int dfu_fill_entity(struct dfu_entity *dfu, char *s, int alt, return -1; } else if (strcmp(interface, "virt") == 0) { if (dfu_fill_entity_virt(dfu, devstr, argv, argc)) return -1; + } else if (strcmp(interface, "scsi") == 0) { + if (dfu_fill_entity_scsi(dfu, devstr, argv, argc)) + return -1; } else { printf("%s: Device %s not (yet) supported!\n", __func__, interface); return -1; @@ -659,9 +662,9 @@ 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", "VIRT"}; + "SF", "MTD", "VIRT", "SCSI"}; return dev_t[t]; } const char *dfu_get_layout(enum dfu_layout l) diff --git a/drivers/dfu/dfu_scsi.c b/drivers/dfu/dfu_scsi.c new file mode 100644 index 000000000000..9f95194784c1 --- /dev/null +++ b/drivers/dfu/dfu_scsi.c @@ -0,0 +1,435 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * DFU SCSI backend (based on MMC backend). + * + * Copyright (C) 2012 Samsung Electronics + * author: Lukasz Majewski <l.majewski@samsung.com> + * Copyright (C) 2024 Linaro Ltd. + */ + +#include <log.h> +#include <malloc.h> +#include <errno.h> +#include <div64.h> +#include <dfu.h> +#include <ext4fs.h> +#include <fat.h> +#include <scsi.h> +#include <part.h> +#include <command.h> +#include <linux/printk.h> + +static unsigned char *dfu_file_buf; +static u64 dfu_file_buf_len; +static u64 dfu_file_buf_offset; + +#define scsi_get_blk_desc(dev) ((struct blk_desc *)dev_get_uclass_plat(dev)) + +#define find_scsi_device(dev_num, scsi) blk_get_device(UCLASS_SCSI, dev_num, scsi) + +static int scsi_block_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, long *len) +{ + struct udevice *scsi; + u32 blk_start, blk_count, n = 0; + int ret; + + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); + if (ret < 0) { + pr_err("Device scsi %d - not found!", dfu->data.scsi.lun); + return -ENODEV; + } + + /* + * We must ensure that we work in lba_blk_size chunks, so ALIGN + * this value. + */ + *len = ALIGN(*len, dfu->data.scsi.lba_blk_size); + + blk_start = dfu->data.scsi.lba_start + (u32)lldiv(offset, dfu->data.scsi.lba_blk_size); + blk_count = *len / dfu->data.scsi.lba_blk_size; + if (blk_start + blk_count > dfu->data.scsi.lba_start + dfu->data.scsi.lba_size) { + puts("Request would exceed designated area!\n"); + return -EINVAL; + } + + debug("%s: %s dev: %d start: %d cnt: %d buf: 0x%p\n", __func__, + op == DFU_OP_READ ? "scsi READ" : "scsi WRITE", dfu->data.scsi.lun, blk_start, + blk_count, buf); + switch (op) { + case DFU_OP_READ: + n = blk_dread(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); + break; + case DFU_OP_WRITE: + n = blk_dwrite(scsi_get_blk_desc(scsi), blk_start, blk_count, buf); + break; + default: + pr_err("Operation not supported\n"); + } + + if (n != blk_count) { + pr_err("scsi block operation failed"); + return -EIO; + } + + return 0; +} + +static int scsi_file_op(enum dfu_op op, struct dfu_entity *dfu, u64 offset, void *buf, u64 *len) +{ + char dev_part_str[8]; + int ret; + int fstype; + loff_t size = 0; + + switch (dfu->layout) { + case DFU_FS_FAT: + fstype = FS_TYPE_FAT; + break; + case DFU_FS_EXT4: + fstype = FS_TYPE_EXT; + break; + case DFU_SKIP: + return 0; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + return -1; + } + + snprintf(dev_part_str, sizeof(dev_part_str), "%d:%d", dfu->data.scsi.dev, + dfu->data.scsi.part); + + ret = fs_set_blk_dev("scsi", dev_part_str, fstype); + if (ret) { + puts("dfu: fs_set_blk_dev error!\n"); + return ret; + } + + switch (op) { + case DFU_OP_READ: + ret = fs_read(dfu->name, (size_t)buf, offset, *len, &size); + if (ret) { + puts("dfu: fs_read error!\n"); + return ret; + } + *len = size; + break; + case DFU_OP_WRITE: + ret = fs_write(dfu->name, (size_t)buf, offset, *len, &size); + if (ret) { + puts("dfu: fs_write error!\n"); + return ret; + } + break; + case DFU_OP_SIZE: + ret = fs_size(dfu->name, &size); + if (ret) { + puts("dfu: fs_size error!\n"); + return ret; + } + *len = size; + break; + default: + return -1; + } + + return ret; +} + +static int scsi_file_buf_write(struct dfu_entity *dfu, u64 offset, void *buf, long *len) +{ + int ret = 0; + + if (offset == 0) { + dfu_file_buf_len = 0; + dfu_file_buf_offset = 0; + } + + /* Add to the current buffer. */ + if (dfu_file_buf_len + *len > CONFIG_SYS_DFU_MAX_FILE_SIZE) + *len = CONFIG_SYS_DFU_MAX_FILE_SIZE - dfu_file_buf_len; + memcpy(dfu_file_buf + dfu_file_buf_len, buf, *len); + dfu_file_buf_len += *len; + + if (dfu_file_buf_len == CONFIG_SYS_DFU_MAX_FILE_SIZE) { + ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, + &dfu_file_buf_len); + dfu_file_buf_offset += dfu_file_buf_len; + dfu_file_buf_len = 0; + } + + return ret; +} + +static int scsi_file_buf_write_finish(struct dfu_entity *dfu) +{ + int ret = scsi_file_op(DFU_OP_WRITE, dfu, dfu_file_buf_offset, dfu_file_buf, + &dfu_file_buf_len); + + /* Now that we're done */ + dfu_file_buf_len = 0; + dfu_file_buf_offset = 0; + + return ret; +} + +int dfu_write_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) +{ + int ret = -1; + + switch (dfu->layout) { + case DFU_RAW_ADDR: + ret = scsi_block_op(DFU_OP_WRITE, dfu, offset, buf, len); + break; + case DFU_FS_FAT: + case DFU_FS_EXT4: + ret = scsi_file_buf_write(dfu, offset, buf, len); + break; + case DFU_SCRIPT: + ret = run_command_list(buf, *len, 0); + break; + case DFU_SKIP: + ret = 0; + break; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + } + + return ret; +} + +int dfu_flush_medium_scsi(struct dfu_entity *dfu) +{ + int ret = 0; + + switch (dfu->layout) { + case DFU_FS_FAT: + case DFU_FS_EXT4: + ret = scsi_file_buf_write_finish(dfu); + break; + case DFU_SCRIPT: + /* script may have changed the dfu_alt_info */ + dfu_reinit_needed = true; + break; + case DFU_RAW_ADDR: + case DFU_SKIP: + break; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + } + + return ret; +} + +int dfu_get_medium_size_scsi(struct dfu_entity *dfu, u64 *size) +{ + int ret; + + switch (dfu->layout) { + case DFU_RAW_ADDR: + *size = dfu->data.scsi.lba_size * dfu->data.scsi.lba_blk_size; + return 0; + case DFU_FS_FAT: + case DFU_FS_EXT4: + ret = scsi_file_op(DFU_OP_SIZE, dfu, 0, NULL, size); + if (ret < 0) + return ret; + return 0; + case DFU_SCRIPT: + case DFU_SKIP: + return 0; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + return -1; + } +} + +static int scsi_file_buf_read(struct dfu_entity *dfu, u64 offset, void *buf, long *len) +{ + int ret; + + if (offset == 0 || offset >= dfu_file_buf_offset + dfu_file_buf_len || + offset + *len < dfu_file_buf_offset) { + u64 file_len = CONFIG_SYS_DFU_MAX_FILE_SIZE; + + ret = scsi_file_op(DFU_OP_READ, dfu, offset, dfu_file_buf, &file_len); + if (ret < 0) + return ret; + dfu_file_buf_len = file_len; + dfu_file_buf_offset = offset; + } + if (offset + *len > dfu_file_buf_offset + dfu_file_buf_len) + return -EINVAL; + + /* Add to the current buffer. */ + memcpy(buf, dfu_file_buf + offset - dfu_file_buf_offset, *len); + + return 0; +} + +int dfu_read_medium_scsi(struct dfu_entity *dfu, u64 offset, void *buf, long *len) +{ + int ret = -1; + + switch (dfu->layout) { + case DFU_RAW_ADDR: + ret = scsi_block_op(DFU_OP_READ, dfu, offset, buf, len); + break; + case DFU_FS_FAT: + case DFU_FS_EXT4: + ret = scsi_file_buf_read(dfu, offset, buf, len); + break; + default: + printf("%s: Layout (%s) not (yet) supported!\n", __func__, + dfu_get_layout(dfu->layout)); + } + + return ret; +} + +void dfu_free_entity_scsi(struct dfu_entity *dfu) +{ + if (dfu_file_buf) { + free(dfu_file_buf); + dfu_file_buf = NULL; + } +} + +/* + * @param s Parameter string containing space-separated arguments: + * 1st: + * raw (raw read/write) + * fat (files) + * ext4 (^) + * part (partition image) + * 2nd and 3rd: + * lba_start and lba_size, for raw write + * scsi_dev and scsi_part, for filesystems and part + */ +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, char **argv, int argc) +{ + const char *entity_type; + ssize_t second_arg; + ssize_t third_arg = -1; + struct udevice *scsi; + struct blk_desc *blk_dev; + int ret; + char *s; + + if (argc < 2) { + pr_err("Need at least one argument\n"); + return -EINVAL; + } + + dfu->data.scsi.lun = dectoul(devstr, &s); + if (*s) + return -EINVAL; + + entity_type = argv[0]; + /* + * Base 0 means we'll accept (prefixed with 0x or 0) base 16, 8, + * with default 10. + */ + second_arg = simple_strtol(argv[1], &s, 0); + if (*s) + return -EINVAL; + if (argc >= 3) { + third_arg = simple_strtoul(argv[2], &s, 0); + if (*s) + return -EINVAL; + } + + if (scsi_scan(false)) { + pr_err("Couldn't init scsi device.\n"); + return -ENODEV; + } + + ret = find_scsi_device(dfu->data.scsi.lun, &scsi); + if (ret < 0) { + pr_err("Couldn't find scsi device no. %d.\n", dfu->data.scsi.lun); + return -ENODEV; + } + + blk_dev = scsi_get_blk_desc(scsi); + if (!blk_dev) { + pr_err("Couldn't get block device for scsi device no. %d.\n", dfu->data.scsi.lun); + return -ENODEV; + } + + /* if it's NOT a raw write */ + if (strcmp(entity_type, "raw")) { + dfu->data.scsi.dev = (second_arg != -1) ? second_arg : dfu->data.scsi.lun; + dfu->data.scsi.part = third_arg; + } + + if (!strcmp(entity_type, "raw")) { + dfu->layout = DFU_RAW_ADDR; + dfu->data.scsi.lba_start = second_arg; + if (third_arg < 0) { + pr_err("raw requires two arguments\n"); + return -EINVAL; + } + dfu->data.scsi.lba_size = third_arg; + dfu->data.scsi.lba_blk_size = blk_dev->blksz; + + /* + * In case the size is zero (i.e. scsi raw 0x10 0), + * assume the user intends to use whole device. + */ + if (third_arg == 0) + dfu->data.scsi.lba_size = blk_dev->lba; + + } else if (!strcmp(entity_type, "part")) { + struct disk_partition partinfo; + int scsipart = second_arg; + + if (third_arg >= 0) { + pr_err("part only accepts one argument\n"); + return -EINVAL; + } + + if (part_get_info(blk_dev, scsipart, &partinfo) != 0) { + pr_err("Couldn't find part #%d on scsi device #%d\n", scsipart, + dfu->data.scsi.lun); + return -ENODEV; + } + + dfu->layout = DFU_RAW_ADDR; + dfu->data.scsi.lba_start = partinfo.start; + dfu->data.scsi.lba_size = partinfo.size; + dfu->data.scsi.lba_blk_size = partinfo.blksz; + } else if (!strcmp(entity_type, "fat")) { + dfu->layout = DFU_FS_FAT; + } else if (!strcmp(entity_type, "ext4")) { + dfu->layout = DFU_FS_EXT4; + } else if (!strcmp(entity_type, "skip")) { + dfu->layout = DFU_SKIP; + } else if (!strcmp(entity_type, "script")) { + dfu->layout = DFU_SCRIPT; + } else { + pr_err("Memory layout (%s) not supported!\n", entity_type); + return -ENODEV; + } + + dfu->dev_type = DFU_DEV_SCSI; + dfu->get_medium_size = dfu_get_medium_size_scsi; + dfu->read_medium = dfu_read_medium_scsi; + dfu->write_medium = dfu_write_medium_scsi; + dfu->flush_medium = dfu_flush_medium_scsi; + dfu->inited = 0; + dfu->free_entity = dfu_free_entity_scsi; + + /* Check if file buffer is ready */ + if (!dfu_file_buf) { + dfu_file_buf = memalign(CONFIG_SYS_CACHELINE_SIZE, CONFIG_SYS_DFU_MAX_FILE_SIZE); + if (!dfu_file_buf) { + pr_err("Could not memalign 0x%x bytes\n", CONFIG_SYS_DFU_MAX_FILE_SIZE); + return -ENOMEM; + } + } + + return 0; +} diff --git a/include/dfu.h b/include/dfu.h index e25588c33cb8..12f9dfcdfcdf 100644 --- a/include/dfu.h +++ b/include/dfu.h @@ -23,8 +23,9 @@ enum dfu_device_type { DFU_DEV_RAM, DFU_DEV_SF, DFU_DEV_MTD, DFU_DEV_VIRT, + DFU_DEV_SCSI, }; enum dfu_layout { DFU_RAW_ADDR = 1, @@ -98,8 +99,21 @@ struct sf_internal_data { struct virt_internal_data { int dev_num; }; +struct scsi_internal_data { + int lun; + + /* RAW programming */ + unsigned int lba_start; + unsigned int lba_size; + unsigned int lba_blk_size; + + /* FAT/EXT */ + unsigned int dev; // Always 0??? + unsigned int part; +}; + #if defined(CONFIG_DFU_NAME_MAX_SIZE) #define DFU_NAME_SIZE CONFIG_DFU_NAME_MAX_SIZE #else #define DFU_NAME_SIZE 32 @@ -125,8 +139,9 @@ struct dfu_entity { struct nand_internal_data nand; struct ram_internal_data ram; struct sf_internal_data sf; struct virt_internal_data virt; + struct scsi_internal_data scsi; } data; int (*get_medium_size)(struct dfu_entity *dfu, u64 *size); @@ -515,8 +530,20 @@ static inline int dfu_fill_entity_virt(struct dfu_entity *dfu, char *devstr, return -1; } #endif +#if CONFIG_IS_ENABLED(DFU_SCSI) +int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, + char **argv, int argc); +#else +static inline int dfu_fill_entity_scsi(struct dfu_entity *dfu, char *devstr, + char **argv, int argc) +{ + puts("SCSI support not available!\n"); + return -1; +} +#endif + extern bool dfu_reinit_needed; extern bool dfu_alt_info_changed; #if CONFIG_IS_ENABLED(DFU_WRITE_ALT)
This is extremely similar to the MMC backend, but there are some notable differences. Works with a DFU string like scsi 4=u-boot-bin part 11 Where "4" is the SCSI dev number (sequential LUN across all SCSI devices) and "11" is the partition number. Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org> --- doc/usage/dfu.rst | 32 ++++ drivers/dfu/Kconfig | 7 + drivers/dfu/Makefile | 1 + drivers/dfu/dfu.c | 5 +- drivers/dfu/dfu_scsi.c | 435 +++++++++++++++++++++++++++++++++++++++++++++++++ include/dfu.h | 27 +++ 6 files changed, 506 insertions(+), 1 deletion(-)