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 | 26 +++ 6 files changed, 505 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.

+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 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 540d48fab77d..c81fa7724268 100644 --- a/drivers/dfu/dfu.c +++ b/drivers/dfu/dfu.c @@ -547,8 +547,11 @@ 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; @@ -643,9 +646,9 @@ 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 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) /**

GPT partition tables include two bytes worth of vendor defined attributes, per partition. ChromeOS and Qualcomm both use these (with different encoding!) to handle A/B slot switching with a retry counter.

Expose these via the disk_partition struct so that they can be parsed by the relevant board code.

This will be used on Qualcomm boards to determine which slot we're booting on so that we can flash capsule updates to the correct one.

Reviewed-by: Ilias Apalodimas ilias.apalodimas@linaro.org Reviewed-by: Mattijs Korpershoek mkorpershoek@baylibre.com Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- disk/part_efi.c | 1 + include/part.h | 1 + 2 files changed, 2 insertions(+)

diff --git a/disk/part_efi.c b/disk/part_efi.c index b1a03bd165e0..bde4adcfa087 100644 --- a/disk/part_efi.c +++ b/disk/part_efi.c @@ -291,8 +291,9 @@ int part_get_info_efi(struct blk_desc *desc, int part, snprintf((char *)info->name, sizeof(info->name), "%s", print_efiname(&gpt_pte[part - 1])); strcpy((char *)info->type, "U-Boot"); info->bootable = get_bootable(&gpt_pte[part - 1]); + info->type_flags = gpt_pte[part - 1].attributes.fields.type_guid_specific; if (CONFIG_IS_ENABLED(PARTITION_UUIDS)) { uuid_bin_to_str(gpt_pte[part - 1].unique_partition_guid.b, (char *)disk_partition_uuid(info), UUID_STR_FORMAT_GUID); diff --git a/include/part.h b/include/part.h index 32ee40488563..afae51f1b933 100644 --- a/include/part.h +++ b/include/part.h @@ -68,8 +68,9 @@ struct disk_partition { * PART_BOOTABLE the MBR bootable flag is set * PART_EFI_SYSTEM_PARTITION the partition is an EFI system partition */ int bootable; + u16 type_flags; /* top 16 bits of GPT partition attributes */ #if CONFIG_IS_ENABLED(PARTITION_UUIDS) char uuid[UUID_STR_LEN + 1]; /* filesystem UUID as string, if exists */ #endif #ifdef CONFIG_PARTITION_TYPE_GUID

Qualcomm boards flash U-Boot to the boot partition, implement support for determining which slot U-Boot is running from and finding the correct boot partition for that slot and configuring the appropriate DFU string.

For now this only supports boards with SCSI/UFS storage where U-Boot is flashed to the boot partition, and only U-Boot itself is updated. In the future we may also support updating additional firmware components (tz, hyp, xbl) as well as having U-Boot installed to other partitions (e.g. as a first-stage bootloader).

Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- arch/arm/mach-snapdragon/Makefile | 1 + arch/arm/mach-snapdragon/board.c | 3 + arch/arm/mach-snapdragon/capsule_update.c | 147 ++++++++++++++++++++++++++++++ arch/arm/mach-snapdragon/qcom-priv.h | 6 ++ include/configs/qcom.h | 5 + 5 files changed, 162 insertions(+)

diff --git a/arch/arm/mach-snapdragon/Makefile b/arch/arm/mach-snapdragon/Makefile index 7a4495c8108f..343e825c6fdd 100644 --- a/arch/arm/mach-snapdragon/Makefile +++ b/arch/arm/mach-snapdragon/Makefile @@ -2,5 +2,6 @@ # # (C) Copyright 2015 Mateusz Kulikowski mateusz.kulikowski@gmail.com

obj-y += board.o +obj-$(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) += capsule_update.o obj-$(CONFIG_OF_LIVE) += of_fixup.o diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c index b439a19ec7eb..c4a3394706e6 100644 --- a/arch/arm/mach-snapdragon/board.c +++ b/arch/arm/mach-snapdragon/board.c @@ -299,8 +299,11 @@ int board_late_init(void)

configure_env(); qcom_late_init();

+ /* Configure the dfu_string for capsule updates */ + qcom_configure_capsule_updates(); + return 0; }

static void build_mem_map(void) diff --git a/arch/arm/mach-snapdragon/capsule_update.c b/arch/arm/mach-snapdragon/capsule_update.c new file mode 100644 index 000000000000..505f5bf5ae07 --- /dev/null +++ b/arch/arm/mach-snapdragon/capsule_update.c @@ -0,0 +1,147 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Common initialisation for Qualcomm Snapdragon boards. + * + * Copyright (c) 2024 Linaro Ltd. + * Author: Caleb Connolly caleb.connolly@linaro.org + */ + +#define pr_fmt(fmt) "QCOM-FMP: " fmt + +#include <dm/device.h> +#include <dm/uclass.h> +#include <efi.h> +#include <efi_loader.h> +#include <malloc.h> +#include <scsi.h> +#include <part.h> +#include <linux/err.h> + +#include "qcom-priv.h" + +struct efi_fw_image fw_images[] = { + { + .image_type_id = QUALCOMM_UBOOT_BOOT_IMAGE_GUID, + .fw_name = u"QUALCOMM-UBOOT", + .image_index = 1, + }, +}; + +struct efi_capsule_update_info update_info = { + /* Filled in by configure_dfu_string() */ + .dfu_string = NULL, + .num_images = ARRAY_SIZE(fw_images), + .images = fw_images, +}; + +/* LSB first */ +struct part_slot_status { + u16: 2; + u16 active : 1; + u16: 3; + u16 successful : 1; + u16 unbootable : 1; + u16 tries_remaining : 4; +}; + +static int find_boot_partition(const char *partname, struct blk_desc *blk_dev, char *name) +{ + int ret; + int partnum; + struct disk_partition info; + struct part_slot_status *slot_status; + + for (partnum = 1;; partnum++) { + ret = part_get_info(blk_dev, partnum, &info); + if (ret) + return ret; + + slot_status = (struct part_slot_status *)&info.type_flags; + log_io("%16s: Active: %1d, Successful: %1d, Unbootable: %1d, Tries left: %1d\n", + info.name, slot_status->active, + slot_status->successful, slot_status->unbootable, + slot_status->tries_remaining); + if (!strncmp(info.name, partname, strlen(partname)) && slot_status->active) { + log_debug("Found active %s partition: '%s'!\n", partname, info.name); + strlcpy(name, info.name, sizeof(info.name)); + return partnum; + } + } + + return -1; +} + +/** + * qcom_configure_capsule_updates() - Configure the DFU string for capsule updates + * + * U-Boot is flashed to the boot partition on Qualcomm boards. In most cases there + * are two boot partitions, boot_a and boot_b. As we don't currently support doing + * full A/B updates, we only support updating the currently active boot partition. + * + * So we need to find the current slot suffix and the associated boot partition. + * We do this by looking for the boot partition that has the 'active' flag set + * in the GPT partition vendor attribute bits. + */ +void qcom_configure_capsule_updates(void) +{ + struct blk_desc *desc; + int ret = 0, partnum = -1, devnum; + static char dfu_string[32] = { 0 }; + char name[32]; /* GPT partition name */ + char *partname = "boot"; + struct udevice *dev = NULL; + + /* + * There is currently no good way to check how U-Boot is booting, but we have + * a few hueristics, like here checking if our DTB has a kaslr-seed specified + * will tell us if we were chainloaded by another bootloader. + * FIXME: we should do this check once and use some proper API to expose the data. + */ + if (!ofnode_has_property(ofnode_path("/chosen"), "kaslr-seed")) { + log_debug("No initrd address present, skip as we might not be chainloaded\n"); + return; + } + + if (IS_ENABLED(CONFIG_SCSI)) { + /* Scan for SCSI devices */ + ret = scsi_scan(false); + if (ret) { + debug("Failed to scan SCSI devices: %d\n", ret); + return; + } + } + + uclass_foreach_dev_probe(UCLASS_BLK, dev) { + if (device_get_uclass_id(dev) != UCLASS_BLK) + continue; + + desc = dev_get_uclass_plat(dev); + if (!desc || desc->part_type == PART_TYPE_UNKNOWN) + continue; + devnum = desc->devnum; + partnum = find_boot_partition(partname, desc, + name); + if (partnum >= 0) + break; + } + + if (partnum < 0) { + log_err("Failed to find boot partition\n"); + return; + } + + switch (desc->uclass_id) { + case UCLASS_SCSI: + snprintf(dfu_string, 32, "scsi %d=u-boot-bin part %d", devnum, partnum); + break; + case UCLASS_MMC: + snprintf(dfu_string, 32, "mmc 0=u-boot-bin part %d %d", devnum, partnum); + break; + default: + debug("Unsupported storage uclass: %d\n", desc->uclass_id); + return; + } + log_debug("boot partition is %s, DFU string: '%s'\n", name, dfu_string); + + update_info.dfu_string = dfu_string; +} diff --git a/arch/arm/mach-snapdragon/qcom-priv.h b/arch/arm/mach-snapdragon/qcom-priv.h index 0a7ed5eff8b8..74d39197b89f 100644 --- a/arch/arm/mach-snapdragon/qcom-priv.h +++ b/arch/arm/mach-snapdragon/qcom-priv.h @@ -2,8 +2,14 @@

#ifndef __QCOM_PRIV_H__ #define __QCOM_PRIV_H__

+#if IS_ENABLED(CONFIG_EFI_HAVE_CAPSULE_SUPPORT) +void qcom_configure_capsule_updates(void); +#else +void qcom_configure_capsule_updates(void) {} +#endif /* EFI_HAVE_CAPSULE_SUPPORT */ + #if CONFIG_IS_ENABLED(OF_LIVE) /** * qcom_of_fixup_nodes() - Fixup Qualcomm DT nodes * diff --git a/include/configs/qcom.h b/include/configs/qcom.h index e50b3bce5cdd..b6b5acffe5e4 100644 --- a/include/configs/qcom.h +++ b/include/configs/qcom.h @@ -10,8 +10,13 @@ #define __CONFIGS_SNAPDRAGON_H

#define CFG_SYS_BAUDRATE_TABLE { 115200, 230400, 460800, 921600 }

+// 2a5aa852-b856-4d97-baa9-5c5f4421551f +#define QUALCOMM_UBOOT_BOOT_IMAGE_GUID \ + EFI_GUID(0x2a5aa852, 0xb856, 0x4d97, 0xba, 0xa9, \ + 0x5c, 0x5f, 0x44, 0x21, 0x55, 0x1f) + /* Load addressed are calculated during board_late_init(). See arm/mach-snapdragon/board.c */ #define CFG_EXTRA_ENV_SETTINGS \ "stdin=serial,button-kbd\0" \ "stdout=serial,vidconsole\0" \

Capsule updates depend on SYSRESET, which we currently don't select but instead use a custom reset_cpu() implementation which just calls psci_reset().

Clean this up, drop our custom function and require PSCI reset.

There are some Qualcomm platforms that either can or do run without PSCI support, but we didn't handle these properly before anyway.

Reviewed-by: Neil Armstrong neil.armstrong@linaro.org Reviewed-by: Ilias Apalodimas ilias.apalodimas@linaro.org Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- arch/arm/Kconfig | 2 ++ arch/arm/mach-snapdragon/board.c | 5 ----- 2 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 39ad03acd2e4..0d5161358e33 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1084,8 +1084,10 @@ config ARCH_SNAPDRAGON select OF_CONTROL select OF_SEPARATE select SMEM select SPMI + select SYSRESET + select SYSRESET_PSCI select BOARD_LATE_INIT select OF_BOARD select SAVE_PREV_BL_FDT_ADDR select LINUX_KERNEL_IMAGE_HEADER if !ENABLE_ARM_SOC_BOOT0_HOOK diff --git a/arch/arm/mach-snapdragon/board.c b/arch/arm/mach-snapdragon/board.c index c4a3394706e6..b0d9a65bb8f5 100644 --- a/arch/arm/mach-snapdragon/board.c +++ b/arch/arm/mach-snapdragon/board.c @@ -106,13 +106,8 @@ void *board_fdt_blob_setup(int *err)

return (void *)fdt; }

-void reset_cpu(void) -{ - psci_system_reset(); -} - /* * Some Qualcomm boards require GPIO configuration when switching USB modes. * Support setting this configuration via pinctrl state. */

Enable all the necessary options for capsule updates to work, as well as a few additional EFI features.

Signed-off-by: Caleb Connolly caleb.connolly@linaro.org --- configs/qcom_defconfig | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/configs/qcom_defconfig b/configs/qcom_defconfig index f2dfced4bc1e..d1de7158e3f5 100644 --- a/configs/qcom_defconfig +++ b/configs/qcom_defconfig @@ -19,33 +19,39 @@ CONFIG_LOG_MAX_LEVEL=9 CONFIG_LOG_DEFAULT_LEVEL=4 # CONFIG_DISPLAY_CPUINFO is not set CONFIG_DISPLAY_BOARDINFO_LATE=y CONFIG_CMD_BOOTMENU=y +CONFIG_CMD_NVEDIT_EFI=y CONFIG_CMD_EEPROM=y CONFIG_SYS_I2C_EEPROM_BUS=2 CONFIG_SYS_I2C_EEPROM_ADDR_LEN=2 CONFIG_SYS_EEPROM_PAGE_WRITE_BITS=5 # CONFIG_CMD_BIND is not set CONFIG_CMD_CLK=y +CONFIG_CMD_DFU=y CONFIG_CMD_GPIO=y CONFIG_CMD_I2C=y CONFIG_CMD_MMC=y CONFIG_CMD_UFS=y CONFIG_CMD_USB=y CONFIG_CMD_CAT=y CONFIG_CMD_BMP=y +CONFIG_CMD_EFIDEBUG=y CONFIG_CMD_LOG=y CONFIG_OF_LIVE=y CONFIG_BUTTON_QCOM_PMIC=y CONFIG_CLK=y +CONFIG_CLK_STUB=y CONFIG_CLK_QCOM_QCM2290=y CONFIG_CLK_QCOM_QCS404=y CONFIG_CLK_QCOM_SDM845=y CONFIG_CLK_QCOM_SM6115=y CONFIG_CLK_QCOM_SM8250=y CONFIG_CLK_QCOM_SM8550=y CONFIG_CLK_QCOM_SM8650=y -CONFIG_CLK_STUB=y +CONFIG_DFU_MMC=y +CONFIG_DFU_SCSI=y +CONFIG_SYS_DFU_DATA_BUF_SIZE=0x200000 CONFIG_MSM_GPIO=y CONFIG_QCOM_PMIC_GPIO=y CONFIG_DM_I2C=y CONFIG_SYS_I2C_QUP=y @@ -105,6 +111,10 @@ CONFIG_VIDEO=y CONFIG_VIDEO_FONT_16X32=y CONFIG_SYS_WHITE_ON_BLACK=y CONFIG_NO_FB_CLEAR=y CONFIG_VIDEO_SIMPLE=y -CONFIG_HEXDUMP=y +CONFIG_SYMBOL_LOOKUP=y +CONFIG_EFI_RUNTIME_UPDATE_CAPSULE=y +CONFIG_EFI_CAPSULE_ON_DISK=y +CONFIG_EFI_IGNORE_OSINDICATIONS=y +CONFIG_EFI_CAPSULE_FIRMWARE_RAW=y CONFIG_LMB_MAX_REGIONS=64