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Tue, 09 Apr 2024 06:55:56 -0700 (PDT) From: Caleb Connolly Date: Tue, 09 Apr 2024 15:55:52 +0200 Subject: [PATCH 1/2] dfu: add scsi backend MIME-Version: 1.0 Message-Id: <20240409-b4-dfu-scsi-v1-1-3e1441a60376@linaro.org> References: <20240409-b4-dfu-scsi-v1-0-3e1441a60376@linaro.org> In-Reply-To: <20240409-b4-dfu-scsi-v1-0-3e1441a60376@linaro.org> To: Tom Rini , Simon Glass , Lukasz Majewski , Mattijs Korpershoek Cc: Neil Armstrong , Sumit Garg , Ilias Apalodimas , u-boot@lists.denx.de, Caleb Connolly X-Mailer: b4 0.14-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=17387; i=caleb.connolly@linaro.org; h=from:subject:message-id; bh=cs5uiG8vmgbzSr2VaolCor9ztnNHhWq1Wg/Zpy6t2xE=; b=owEBbQKS/ZANAwAIAQWDMSsZX2S2AcsmYgBmFUjqXaKREtu/myXchmz0RKJ+u3e0wgQbjvEqY KTDhCv2Z7eJAjMEAAEIAB0WIQS2UaFGPGq+0GkMVc0FgzErGV9ktgUCZhVI6gAKCRAFgzErGV9k tkBTD/0dX2EDQoz+5wpYi3f6x4xjtos/y6C++fZVgY4x5DinBTTD1mLCJ0rqTgg64NIZlAN4dTB ibVBGcgoYkeYbFyONW7ilVjQU8hnGs2jkH8LPWtTqCbeJ862j8FI1KUurP3pWO5GaMec7dXKfIt YljvROs3keHhd3EeP9xL8zxI3MJz239vWEe+7tgBMHBVrte4jVl9S3+tBCymc8WZxW8DU7ryIlb woV/5N+kK66WPjYHmEkbh0mVpYNi11BowFqf+teQ3ZpW+VyGjXyOUIYvU9RUCY5+p4ujkmKKNNy K+/No7cNGnGDBrusC3jYfprUUJdckkXLbp/BkW9+/NK+EvxA+65KuaHSN8wQsgOj+JbW8A7nTs6 1dmCk1pXjKb2gbtpLgTIXghU2O5c/IIZ/eW84hKLWbVCnbECJLKdYSdS+3ekmCa/qzD9I+x8tKO Jm1Ao0d4kuwnmpnybg3P8kW6b9kCx7SV0t65tFd4a/CZA9tptV0UJanMbpOLq8MBU10kE5hj8yp hijJfmuZz4Cca15iIRqDpS+abuDL9rmymk+Pmmc9D6FqlN76IoNq/6UhIkpWZrjq2/Z4V934PbM IDC/ST1N7A6NJUvb+jQlqXBDpgfxnm/c6xFey6O05aPxYAoL3BrbuZ1G3ve3TxsNnMWsPfB1UbT pKsgj77GWLyMoFQ== X-Developer-Key: i=caleb.connolly@linaro.org; a=openpgp; fpr=83B24DA7FE145076BC38BB250CD904EB673A7C47 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean 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 --- doc/usage/dfu.rst | 31 ++++ drivers/dfu/Kconfig | 7 + drivers/dfu/Makefile | 1 + drivers/dfu/dfu.c | 5 +- drivers/dfu/dfu_scsi.c | 437 +++++++++++++++++++++++++++++++++++++++++++++++++ include/dfu.h | 26 +++ 6 files changed, 506 insertions(+), 1 deletion(-) diff --git a/doc/usage/dfu.rst b/doc/usage/dfu.rst index 8cc09c308d82..dc4f8d672f99 100644 --- a/doc/usage/dfu.rst +++ b/doc/usage/dfu.rst @@ -166,8 +166,38 @@ 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 + + each element in *dfu_alt_info* being + + * raw raw access to SCSI LUN + * part raw access to partition + * fat file in FAT partition + * ext4 file in EXT4 partition + * skip 0 0 ignore flashed data + * 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 @@ -277,8 +307,9 @@ alternate list separated by '&' with the same format for each :: mmc =;....; nand =;....; ram =;....; + scsi =;....; sf =;....; mtd =;....; virt =;....; diff --git a/drivers/dfu/Kconfig b/drivers/dfu/Kconfig index 0360d9da1427..158c660e6c4e 100644 --- a/drivers/dfu/Kconfig +++ b/drivers/dfu/Kconfig @@ -86,8 +86,15 @@ 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 2adf26e2fe24..8024ad98a7dc 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -548,8 +548,11 @@ 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; @@ -644,9 +647,9 @@ 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..63c3bcffe769 --- /dev/null +++ b/drivers/dfu/dfu_scsi.c @@ -0,0 +1,437 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * DFU SCSI backend (based on MMC backend). + * + * Copyright (C) 2012 Samsung Electronics + * author: Lukasz Majewski + * Copyright (C) 2024 Linaro Ltd. + */ + +#define LOG_DEBUG + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +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 fa1918cd6635..d7f365a7f1ce 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 +99,20 @@ 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 @@ -126,8 +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); @@ -516,8 +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; #if CONFIG_IS_ENABLED(DFU_WRITE_ALT) /**