November 2021 - U-Boot

[PATCH v2] smbios: Fix table when no string is present
by matthias.bgg＠kernel.org 31 Jan '24

31 Jan '24

From: Matthias Brugger <mbrugger(a)suse.com> When no string is present in a table, next_ptr points to the same location as eos. When calculating the string table length, we would only reserve one \0. By spec a SMBIOS table has to end with two \0\0 when no strings a present. Signed-off-by: Matthias Brugger <mbrugger(a)suse.com> --- Changes in v2: - check in smbios_string_table_len if no string present and return value accordingly lib/smbios.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/lib/smbios.c b/lib/smbios.c index 9eb226ec9f..fd57d8694f 100644 --- a/lib/smbios.c +++ b/lib/smbios.c @@ -191,6 +191,10 @@ int smbios_update_version(const char *version) */ static int smbios_string_table_len(const struct smbios_ctx *ctx) { + /* In case no string is defined we have to return two \0 */ + if (ctx->next_ptr == ctx->eos) + return 2; + /* Allow for the final \0 after all strings */ return (ctx->next_ptr + 1) - ctx->eos; } -- 2.30.2

3 2

[PATCH v1] qemu-arm: round down memory to multiple of 2MB
by Igor Opaniuk 31 Jan '24

31 Jan '24

From: Igor Opaniuk <igor.opaniuk(a)foundries.io> When LPAE is enabled, 1:1 mapping is created using 2 MB blocks. In case amount of memory provided to QEMU is not multiple of 2 MB, round down the amount of available memory to avoid hang during MMU initialization. How to reproduce: qemu-system-arm -machine virt -m 1058 -nographic -bios u-boot.bin - boots qemu-system-arm -machine virt -m 1057 -nographic -bios u-boot.bin - hangs DRAM: 1 GiB initcall: 60011df8 initcall: 60011904 New Stack Pointer is: 80fffe90 initcall: 60011a20 initcall: 60011bcc initcall: 60011bd4 initcall: 600119b4 Relocation Offset is: 22042000 Relocating to 82042000, new gd at 81001ed0, sp at 80fffe90 initcall: 60011b8c initcall: 82053ea0 initcall: 82053ea8 initcall: 60012040 (relocated to 82054040) dram_bank_mmu_setup: bank: 0 --- hang here during mmu init --- Fixes: 3fa914af82("arm: qemu: implement enable_caches()") Signed-off-by: Igor Opaniuk <igor.opaniuk(a)foundries.io> --- board/emulation/qemu-arm/qemu-arm.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/board/emulation/qemu-arm/qemu-arm.c b/board/emulation/qemu-arm/qemu-arm.c index aa68bef469..841dd7af0e 100644 --- a/board/emulation/qemu-arm/qemu-arm.c +++ b/board/emulation/qemu-arm/qemu-arm.c @@ -84,6 +84,18 @@ int dram_init(void) if (fdtdec_setup_mem_size_base() != 0) return -EINVAL; + /* + * When LPAE is enabled (ARMv7), + * 1:1 mapping is created using 2 MB blocks. + * + * In case amount of memory provided to QEMU + * is not multiple of 2 MB, round down the amount + * of available memory to avoid hang during MMU + * initialization. + */ + if (CONFIG_IS_ENABLED(ARMV7_LPAE)) + gd->ram_size -= (gd->ram_size % 0x200000); + return 0; } -- 2.25.1

3 6

[PATCH v1 1/1] Makefile.lib: Always rebuild DSDT
by Andy Shevchenko 09 Dec '23

09 Dec '23

The dsdt.asl is usually combined out of several files that are included in the main one. Whenever we change the content of any of such files, build system is not able to recognize them. Hence the easiest way is to force DSDT rebuild each time we run make. Signed-off-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> --- scripts/Makefile.lib | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index 07696e86bb54..8c3c893b398a 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -441,7 +441,7 @@ cmd_acpi_c_asl= \ iasl -p $@ -tc $(ASL_TMP) $(if $(KBUILD_VERBOSE:1=), >/dev/null) && \ mv $(patsubst %.c,%.hex,$@) $@ -$(obj)/dsdt.c: $(src)/dsdt.asl +$(obj)/dsdt.c: $(src)/dsdt.asl FORCE $(call cmd,acpi_c_asl) $(Q)sed -i -e "s,dsdt_aml_code,AmlCode," $@ -- 2.33.0

5 9

[BUG] efi_loader: incorrect creation of device paths
by Heinrich Schuchardt 19 Jul '23

19 Jul '23

Hello Takahiro, in a prior mail we have discussed the creation of device paths for USB mass storage devices. On the sand boxyou get the following devices after 'usb start': Class Index Probed Driver Name ----------------------------------------------------------- usb 0 [ + ] usb_sandbox |-- usb@1 usb_hub 0 [ + ] usb_hub | `-- hub usb_mass_s 0 [ + ] usb_mass_storage | |-- usb_mass_storage blk 3 [ ] usb_storage_blk | | `-- usb_mass_storage.lun0 usb_mass_s 1 [ + ] usb_mass_storage | |-- usb_mass_storage blk 4 [ ] usb_storage_blk | | `-- usb_mass_storage.lun0 usb_mass_s 2 [ + ] usb_mass_storage | `-- usb_mass_storage blk 5 [ ] usb_storage_blk | `-- usb_mass_storage.lun0 For of these storage devices we try to create the same device path which is not allowable: => usb start starting USB... Bus usb@1: scanning bus usb@1 for devices... 5 USB Device(s) found scanning usb for storage devices... 3 Storage Device(s) found => => efidebug dh Scanning disk mmc2.blk... handle 0000000015e34f00, /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/SD(2)/SD(0) Scanning disk mmc1.blk... handle 0000000015e36b30, /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/SD(1)/SD(1) Scanning disk mmc0.blk... handle 0000000015e35b00, /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/SD(0)/SD(2) Scanning disk usb_mass_storage.lun0... handle 0000000015e35c10, /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/UsbClass(0x1234,0x5678,0x9,0x0,0x0)/UsbClass(0x1234,0x5678,0x0,0x0,0x0) fs_devread read outside partition 2 Failed to mount ext2 filesystem... BTRFS: superblock end 69632 is larger than device size 512 Scanning disk usb_mass_storage.lun0... handle 0000000015e361f0, /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/UsbClass(0x1234,0x5678,0x9,0x0,0x0)/UsbClass(0x1234,0x5678,0x0,0x0,0x0) ERROR: failure to add disk device usb_mass_storage.lun0, r = 20 Error: Cannot initialize UEFI sub-system, r = 20 I will provide a patch that will allow the first USB device to be used and avoids stopping the boot process. But we really have to walk the dm tree to create a device patch for USB devices based on port IDs. We should add a new field to struct uclass_driver: struct efi_device_path *get_node(udevice *dev); This function shall return a pointer to an freshly allocated buffer with the device node for the device. To build the devicepath we can then walk the dm tree. To make migration easier: If the function pointer or the return value is NULL we can create a CTRL() node as dummy using the uclass_id and the device number. Best regards Heinrich

3 8

[PATCH] usb: eth: lan78xx: Fix logic in lan78xx_read_otp() to avoid a warning
by Tom Rini 20 Jun '23

20 Jun '23

In lan78xx_read_otp() we want to know if sig is LAN78XX_OTP_INDICATOR_1 or LAN78XX_OTP_INDICATOR_2. In the case of matching the first one we set offset to itself, and clang warns about this. Rework the logic so that if sig is the second indicator we adjust the offset as today and if it does not match the first indicator we return -EINVAL Cc: Marek Vasut <marex(a)denx.de> Signed-off-by: Tom Rini <trini(a)konsulko.com> --- drivers/usb/eth/lan78xx.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/usb/eth/lan78xx.c b/drivers/usb/eth/lan78xx.c index e34ad2603fbb..d147412990de 100644 --- a/drivers/usb/eth/lan78xx.c +++ b/drivers/usb/eth/lan78xx.c @@ -146,11 +146,9 @@ static int lan78xx_read_otp(struct usb_device *udev, u32 offset, ret = lan78xx_read_raw_otp(udev, 0, 1, &sig); if (!ret) { - if (sig == LAN78XX_OTP_INDICATOR_1) - offset = offset; - else if (sig == LAN78XX_OTP_INDICATOR_2) + if (sig == LAN78XX_OTP_INDICATOR_2) offset += 0x100; - else + else if (sig != LAN78XX_OTP_INDICATOR_1) return -EINVAL; ret = lan78xx_read_raw_otp(udev, offset, length, data); if (ret) -- 2.17.1

2 2

[PATCH] RFC: nvedit: support doing one (extra) expansion of the value in "env set"
by Rasmus Villemoes 02 Feb '23

02 Feb '23

Currently, there's no way to fetch the value of an environment variable whose name is stored in some other variable, or generated from such - in non-working pseudo-code, ${${varname}} ${array${index}} This forces some scripts to needlessly duplicate logic and hardcode assumptions. For example, in an A/B scheme with three variables BOOT_ORDER # Either "A B" or "B A" depending on which slot was last updated BOOT_A_LEFT # 0..3 BOOT_B_LEFT # 0..3 when one needs to determine the slot to boot from, one does something like setenv found for slot in $BOOT_ORDER ; do if test "x$found" != "x" ; then # work around lack of break elif test "x$slot" = "xA" ; then if test $BOOT_A_LEFT -gt 0 ; then setexpr BOOT_A_LEFT $BOOT_A_LEFT - 1 setenv found A setenv bootargs ${bootargs_A} setenv ubivol ${ubivol_A} # more setup based on A fi elif test "x$slot" = "xB" ; then if test $BOOT_B_LEFT -gt 0 ; then # the same ... fi fi done This is already bad enough, but extending that to A/B/C is tedious and prone to copy-pastos. So this is an attempt at allowing one to do "env set -E var value1 value2" with the effect that, of course, normal variable expansion happens on the command line, the valueX are joined with spaces as usual, and then one more pass is done over that string replacing occurrences of ${foo}. The above would become setenv found for slot in $BOOT_ORDER ; do if test "x$found" != "x" ; then # work around lack of break else env set -E boot_left "\${BOOT_${slot}_LEFT}" if test $boot_left -gt 0 ; then setexpr BOOT_${slot}_LEFT $boot_left - 1 env set found $slot env set -E bootargs "\${bootargs_${slot}}" env set -E ubivol "\${ubivol_${slot}}" fi fi done I'm pleasantly surprised it was that easy to implement, but of course I'm cheating a bit (cli_simple_process_macros is only available if CONFIG_CMDLINE, though I think cli_simple.o could be unconditionally built and then link-time GC should get rid of the excess functions). This has been lightly tested in the sandbox. I'll add some proper unit tests, update the help texts and try to handle the Kconfig issue if this is something that might be accepted. Signed-off-by: Rasmus Villemoes <rasmus.villemoes(a)prevas.dk> --- cmd/nvedit.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/cmd/nvedit.c b/cmd/nvedit.c index 81d94cd193..ff6ffcb674 100644 --- a/cmd/nvedit.c +++ b/cmd/nvedit.c @@ -224,7 +224,7 @@ DONE: */ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) { - int i, len; + int i, len, expand = 0; char *name, *value, *s; struct env_entry e, *ep; @@ -244,6 +244,9 @@ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) case 'f': /* force */ env_flag |= H_FORCE; break; + case 'E': + expand = 1; + break; default: return CMD_RET_USAGE; } @@ -287,6 +290,18 @@ static int _do_env_set(int flag, int argc, char * const argv[], int env_flag) if (s != value) *--s = '\0'; + if (expand) { + char *expanded = malloc(CONFIG_SYS_CBSIZE); + + if (expanded == NULL) { + printf("## Can't malloc %d bytes\n", CONFIG_SYS_CBSIZE); + free(value); + return 1; + } + cli_simple_process_macros(value, expanded); + free(value); + value = expanded; + } e.key = name; e.data = value; hsearch_r(e, ENV_ENTER, &ep, &env_htab, env_flag); -- 2.23.0

5 20

linksys wrt1900acs v2 boot problem
by Dilyan Lazarov 07 Jan '23

07 Jan '23

Hi, I have a problem with my linksys wrt1900acs. My main question is this a hardware problem or software problem? Is it possible to address? I have started researching and have tried with "kwboot" under Windows VM - Ubuntu 20 - Linux but I have a problem with usb serial connection. I have tried several things but I understand that it isn't possible to start USB to Serial on a Windows VM. I will expect your response. Thank you in advance. All the best Dilyan I see the following Log from U-Boot with PuTTy under Windows 10: BootROM - 1.73 Booting from NAND flash General initialization - Version: 1.0.0 Detected Device ID 6820 High speed PHY - Version: 2.0 Init RD NAS topology Serdes Lane 3 is USB3 Serdes Lane 4 is SGMII board SerDes lanes topology details: | Lane # | Speed | Type | -------------------------------- | 0 | 06 | SATA0 | | 1 | 05 | PCIe0 | | 2 | 06 | SATA1 | | 3 | 05 | USB3 HOST1 | | 4 | 05 | PCIe1 | | 5 | 00 | SGMII2 | -------------------------------- :** Link is Gen1, check the EP capability PCIe, Idx 0: Link upgraded to Gen2 based on client cpabilities :** Link is Gen1, check the EP capability PCIe, Idx 1: remains Gen1 High speed PHY - Ended Successfully DDR3 Training Sequence - Ver TIP-1.26.0 mvSysEnvGetTopologyUpdateInfo: TWSI Read failed WL Supp: IF 0 busId 1 Failed ! WL Supp: IF 0 failed ddr3TipDynamicWriteLevelingSupp failure ******** DRAM initialization Failed (res 0x1) ******** DDR3 run algorithm - FAILED 0x1 DDR3 Training Sequence - FAILED ********** DRAM initialization failed! ******** -- Dilyan

3 2

kwboot : bug when board stops acking
by SC 06 Jan '23

06 Jan '23

Hi list, I think there's a bug in kwboot. I have a faulty board that stops acking xmodem frames after a certain number of packets and kwboot instead of exiting continues to send frames up to 100%. With the one second retry timer it's very long! More than 2 hours :-( The bug is in the kwboot_xm_sendblock() fonction : https://gitlab.denx.de/u-boot/u-boot/blob/master/tools/kwboot.c#L375 kwboot_tty_recv detects the timeout but the return value is based on the last character received (line 403) The variable c is not initialized so if it keeps the previous value which is ACK => rc=0 => infinite loop There are several ways to fix the bug: * Surround the "switch(c)" with a test: if ( !((rc == -1) && (errno == ETIMEDOUT)) ) { rc = -1; switch (c) { case ACK: rc = 0; break; case NAK: errno = EBADMSG; break; case CAN: errno = ECANCELED; break; default: errno = EPROTO; break; } } return rc; * In the case of a TIMEOUT set c to a specific value and add the case in the switch Do you agree with my diagnosis? What is the best solution to fix this bug? Should I provide a patch? Thank you, Stephane

3 2

Netgear RN102 U-Boot Nand Driver Modification
by Abdus Rainey 06 Jan '23

06 Jan '23

I have recently modded a Netgear RN102 NAND flash from 128 MB to 4096 MB (Samsung k9gbg08u0a) but i have a problem with NAND initialization. I can boot with kwboot which is unique for Armada CPU's. Here is my log from kwboot with my stock mtd0: root@whitepawnxeon:/home/jigsaw/Downloads# kwboot -t -B 115200 /dev/ttyUSB0 -b mtd0stockuboot.img -p Sending boot message. Please reboot the target...- Sending boot image... 0 % [......................................................................] 0 % [......................................................................] 1 % [......................................................................] 1 % [......................................................................] 2 % [......................................................................] 2 % [......................................................................] 3 % [......................................................................] 3 % [......................................................................] 4 % [......................................................................] 5 % [......... General initialization - Version: 1.0.0 High speed PHY - Version: 2.1.4 (COM-PHY-V20) Update PEX Device ID 0x6710 High speed PHY - Ended Successfully 0000 DDR3 Training Sequence - Ver 5.7.1 DDR3 Training Sequence - Run without PBS. DDR3 Training Sequence - Ended Successfully .............................................................] 5 % [......................................................................] 6 % [......................................................................] 6 % [......................................................................] 7 % [......................................................................] 7 % [......................................................................] 8 % [......................................................................] 9 % [......................................................................] 9 % [......................................................................] 10 % [......................................................................] 10 % [......................................................................] 11 % [......................................................................] 11 % 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| __ ) ___ ___ | |_ | | | |___| _ \ / _ \ / _ \| __| | |_| |___| |_) | (_) | (_) | |_ \___/ |____/ \___/ \___/ \__| ** LOADER ** U-Boot 2011.12-gec25d27-dirty (Oct 26 2015 - 16:53:05) Marvell version: v2011.12 2014_T2.0p1 06/23/2015 ReadyNAS-102 V2.0 Board: DB-88F6710-BP SoC: MV6710 A1 CPU: Marvell PJ4B v7 UP (Rev 1) LE CPU @ 1200 [MHz] L2 @ 600 [MHz] TClock @ 200 [MHz] DDR @ 600 [MHz] DDR 16Bit Width, FastPath Memory Access DRAM: 512 MiB Map: Code: 0x1feef000:0x1ff9ef34 BSS: 0x1ffef0a0 Stack: 0x1f9eeef8 Heap: 0x1f9ef000:0x1feef000 NAND: (ID 0xd7ec) nand_get_flash_type: second ID read did not match ac,d7 against ec,52 No NAND device found!!! 0 MiB MMC: MRVL_MMC: 0 *** Warning - readenv() failed, using default environment Initialize and scan all PCI interfaces PEX unit.port(active IF[-first bus]): ------------------------------------------ PEX 0: Root Complex Interface, Detected Link X1, GEN 2.0 PEX 1: Root Complex Interface, Detected Link X1, GEN 2.0 FPU not initialized USB 0: Host Mode USB 1: Host Mode Shutting down unused interfaces: GBE0 SDIO AUDIO TDM Modules/Interfaces Detected: RGMII1 Phy PEX0 (Lane 0) PEX1 (Lane 1) SATA0 (Lane 2) SATA1 (Lane 3) Net: , egiga1 [PRIME] Detect MVT/MP board... Saving Environment to NAND... Erasing Nand... Attempt to erase non page aligned data Power On! Updating env to v3... Saving Environment to NAND... Erasing Nand... Attempt to erase non page aligned data raise: Signal # 8 caught raise: Signal # 8 caught __ __ _ _ | \/ | __ _ _ ____ _____| | | | |\/| |/ _` | '__\ \ / / _ \ | | | | | | (_| | | \ V / __/ | | |_| |_|\__,_|_| \_/ \___|_|_| _ _ ____ _ | | | | | __ ) ___ ___ | |_ | | | |___| _ \ / _ \ / _ \| __| | |_| |___| |_) | (_) | (_) | |_ \___/ |____/ \___/ \___/ \__| ** LOADER ** U-Boot 2011.12-gec25d27-dirty (Oct 26 2015 - 16:53:05) Marvell version: v2011.12 2014_T2.0p1 06/23/2015 ReadyNAS-102 V2.0 Board: DB-88F6710-BP SoC: MV6710 A1 CPU: Marvell PJ4B v7 UP (Rev 1) LE CPU @ 1200 [MHz] L2 @ 600 [MHz] TClock @ 200 [MHz] DDR @ 600 [MHz] DDR 16Bit Width, FastPath Memory Access DRAM: 512 MiB Map: Code: 0x1feef000:0x1ff9ef34 BSS: 0x1ffef0a0 Stack: 0x1f9eeef8 Heap: 0x1f9ef000:0x1feef000 NAND: (ID 0xd7ec) nand_get_flash_type: second ID read did not match ac,d7 against ec,53 No NAND device found!!! 0 MiB MMC: MRVL_MMC: 0 *** Warning - readenv() failed, using default environment Initialize and scan all PCI interfaces PEX unit.port(active IF[-first bus]): ------------------------------------------ PEX 0: Root Complex Interface, Detected Link X1, GEN 2.0 PEX 1: Root Complex Interface, Detected Link X1, GEN 2.0 FPU not initialized USB 0: Host Mode USB 1: Host Mode Shutting down unused interfaces: GBE0 SDIO AUDIO TDM Modules/Interfaces Detected: RGMII1 Phy PEX0 (Lane 0) PEX1 (Lane 1) SATA0 (Lane 2) SATA1 (Lane 3) Net: , egiga1 [PRIME] Detect MVT/MP board... Saving Environment to NAND... Erasing Nand... Attempt to erase non page aligned data Power On! Updating env to v3... Saving Environment to NAND... Erasing Nand... Attempt to erase non page aligned data raise: Signal # 8 caught raise: Signal # 8 caught __ __ _ _ | \/ | __ _ _ ____ _____| | | | |\/| |/ _` | '__\ \ / / _ \ | | | | | | (_| | | \ V / __/ | | |_| |_|\__,_|_| \_/ \___|_|_| _ _ ____ _ | | | | | __ ) ___ ___ | |_ | | | |___| _ \ / _ \ / _ \| __| | |_| |___| |_) | (_) | (_) | |_ \___/ |____/ \___/ \___/ \__| ** LOADER ** U-Boot 2011.12-gec25d27-dirty (Oct 26 2015 - 16:53:05) Marvell version: v2011.12 2014_T2.0p1 06/23/2015 ReadyNAS-102 V2.0 Board: DB-88F6710-BP SoC: MV6710 A1 CPU: Marvell PJ4B v7 UP (Rev 1) LE CPU @ 1200 [MHz] L2 @ 600 [MHz] TClock @ 200 [MHz] DDR @ 600 [MHz] DDR 16Bit Width, FastPath Memory Access DRAM: 512 MiB Map: Code: 0x1feef000:0x1ff9ef34 BSS: 0x1ffef0a0 Stack: 0x1f9eeef8 Heap: 0x1f9ef000:0x1feef000 NAND: (ID 0xd7ec) nand_get_flash_type: second ID read did not match ac,d7 against ec,53 No NAND device found!!! 0 MiB MMC: MRVL_MMC: 0 *** Warning - readenv() failed, using default environment Initialize and scan all PCI interfaces PEX unit.port(active IF[-first bus]): ------------------------------------------ PEX 0: Root Complex Interface, Detected Link X1, GEN 2.0 PEX 1: Root Complex Interface, Detected Link X1, GEN 2.0 FPU not initialized USB 0: Host Mode USB 1: Host Mode Shutting down unused interfaces: GBE0 SDIO AUDIO TDM Modules/Interfaces Detected: RGMII1 Phy PEX0 (Lane 0) PEX1 (Lane 1) SATA0 (Lane 2) SATA1 (Lane 3) Net: , egiga1 [PRIME] As you can see u-boot sees device id and manufacturer id but cannot recognize it.My stock u-boot is very old and i get u-boot source code from Netgear GPL.(ReadyNASOS_V6.6.0_WW_src.zip) In here https://forum.doozan.com/read.php?2,106589,108204#msg-108204 you can see my whole story about this device. Can someone suggest any solution?

2 1

Nokia RX51 U-Boot USB support updates?
by Tom Rini 27 Nov '22

27 Nov '22

Hey all, So, the DM_USB migration deadline issue has been addressed by the series here: https://patchwork.ozlabs.org/project/uboot/list/?series=252793&state=* which splits out host and gadget support from the CONFIG_USB symbol itself. The migration deadline was for host support, and as noted, N900 is gadget only. That particular issue is resolved. But investigating that issue lead me to figure out some other problems, that I do need someone to say how will be addressed. Now that the other board removal series has been applied, and then with: https://patchwork.ozlabs.org/project/uboot/patch/20210708014348.4010-1-trin… also applied (for which the maintainer is happy to take), this brings N900 as the last and only user of the "old" musb driver (the "new" musb driver is now almost 9 years old) and also the last and only user of the usbtty driver. I suspect that moving to the "new" MUSB driver, for gadget only, and with that enabling DM_USB_GADGET should be a mechanical affair, so long as you can fit within the space constraints of the platform. I'm not immediately sure how hard it will be to update usbtty.c to modern gadget APIs. If there are size problems, then, well, we need solutions proposed (it's possible that some of the usb-uclass.c code is host-only and needs moving, but that likely won't stop gadget from needing it for gadget related information, to bring up a specific example). It's also likely that the MUSB support needs a little further clean-up for supporting building as gadget-only when there's some common code under a host-only check. What I would like is for someone to step forward and say they'll pick up this work. Is there an immediate deadline? No. I don't think that would be helpful. I'm not going to dictate how long it takes for someone to do the work, that's for the person doing the work to say how long they think it'll take. Thanks all! -- Tom

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