The mini root filesystem for -current has been updated:
ftp://ftp.arm.slackware.com/slackwarearm/slackwarearm-devtools/minirootfs/

• a/coreutils-8.31-arm-1.txz
• a/kernel-firmware-20190312_b0d9583-noarch-1.txz
• a/kernel-modules-armv7-4.19.28_armv7-arm-1.txz
• a/kernel_armv7-4.19.28-arm-1.txz
  Added some options to help support the Raspberry Pi 3, plus a number of
  other useful additions for other devices.
  Thanks to abga on LQ.
  CONFIG_FIQ=y
  CONFIG_ARCH_MULTI_V6=y
  CONFIG_ARCH_BCM_HR2=y
  CONFIG_MXC_AVIC=y
  CONFIG_SOC_IMX31=y
  CONFIG_MACH_MX31ADS=y
  CONFIG_MACH_BUG=y
  CONFIG_IMX_HAVE_PLATFORM_IMX_I2C=y
  CONFIG_IMX_HAVE_PLATFORM_IMX_SSI=y
  CONFIG_IMX_HAVE_PLATFORM_IMX_UART=y
  CONFIG_CPU_V6=y
  CONFIG_CPU_V6K=y
  CONFIG_CPU_32v6=y
  CONFIG_CPU_ABRT_EV6=y
  CONFIG_CPU_PABRT_V6=y
  CONFIG_CPU_CACHE_V6=y
  CONFIG_CPU_TLB_V6=y
  CONFIG_DMA_CACHE_RWFO=y
  CONFIG_ARM_ERRATA_411920=y
  CONFIG_ARM_SCPI_PROTOCOL=m
  CONFIG_ARM_SCPI_POWER_DOMAIN=m
  CONFIG_RASPBERRYPI_FIRMWARE=m
  CONFIG_TI_SCI_PROTOCOL=m
  CONFIG_BCM47XX_NVRAM=y
  CONFIG_BCM47XX_SPROM=y
  CONFIG_GOOGLE_FIRMWARE=y
  CONFIG_GOOGLE_COREBOOT_TABLE=m
  CONFIG_GOOGLE_COREBOOT_TABLE_OF=m
  CONFIG_GOOGLE_MEMCONSOLE=m
  CONFIG_GOOGLE_FRAMEBUFFER_COREBOOT=m
  CONFIG_GOOGLE_MEMCONSOLE_COREBOOT=m
  CONFIG_GOOGLE_VPD=m
  CONFIG_TEGRA_IVC=y
  CONFIG_TEGRA_BPMP=y
  CONFIG_SERIAL_8250_BCM2835AUX=m
  CONFIG_HW_RANDOM_TIMERIOMEM=m
  CONFIG_HW_RANDOM_MXC_RNGA=m
  CONFIG_HW_RANDOM_ST=m
  CONFIG_I2C_TEGRA_BPMP=y
  CONFIG_GPIO_RASPBERRYPI_EXP=m
  CONFIG_SENSORS_RASPBERRYPI_HWMON=m
  CONFIG_DA9063_WATCHDOG=m
  CONFIG_DA9062_WATCHDOG=m
  CONFIG_MENF21BMC_WATCHDOG=m
  CONFIG_MENZ069_WATCHDOG=m
  CONFIG_TANGOX_WATCHDOG=m
  CONFIG_ZIIRAVE_WATCHDOG=m
  CONFIG_AT91SAM9X_WATCHDOG=m
  CONFIG_RN5T618_WATCHDOG=m
  CONFIG_BCM47XX_WDT=m
  CONFIG_BCM2835_WDT=m
  CONFIG_MFD_WM8994=m
  CONFIG_SND_BCM2835_SOC_I2S=m
  CONFIG_SND_SOC_IMX_PCM_FIQ=m
  CONFIG_SND_SOC_SAMSUNG=m
  CONFIG_SND_SAMSUNG_PCM=m
  CONFIG_SND_SAMSUNG_SPDIF=m
  CONFIG_SND_SAMSUNG_I2S=m
  CONFIG_SND_SOC_SAMSUNG_SMDK_WM8994=m
  CONFIG_SND_SOC_SAMSUNG_SMDK_SPDIF=m
  CONFIG_SND_SOC_SMDK_WM8994_PCM=m
  CONFIG_SND_SOC_SNOW=m
  CONFIG_SND_SOC_ODROID=m
  CONFIG_SND_SOC_ARNDALE_RT5631_ALC5631=m
  CONFIG_SND_SOC_SAMSUNG_TM2_WM5110=m
  CONFIG_SND_SOC_ARIZONA=m
  CONFIG_SND_SOC_WM_HUBS=m
  CONFIG_SND_SOC_WM_ADSP=m
  CONFIG_SND_SOC_MAX98095=m
  CONFIG_SND_SOC_RT5631=m
  CONFIG_SND_SOC_WM5110=m
  CONFIG_SND_SOC_WM8994=m
  CONFIG_MMC_BCM2835=m
  CONFIG_DMA_BCM2835=m
  CONFIG_BCM_VIDEOCORE=m
  CONFIG_BCM2835_VCHIQ=m
  CONFIG_SND_BCM2835=m
  CONFIG_VIDEO_BCM2835=m
  CONFIG_COMMON_CLK_SCPI=m
  CONFIG_CLK_BCM_HR2=y
  CONFIG_TI_SCI_CLK=m
  CONFIG_QCOM_CLK_APCS_MSM8916=m
  CONFIG_CLK_TEGRA_BPMP=y
  CONFIG_IMX_MBOX=m
  CONFIG_OMAP2PLUS_MBOX=m
  CONFIG_OMAP_MBOX_KFIFO_SIZE=256
  CONFIG_ALTERA_MBOX=m
  CONFIG_BCM2835_MBOX=m
  CONFIG_STI_MBOX=m
  CONFIG_TI_MESSAGE_MANAGER=m
  CONFIG_MAILBOX_TEST=m
  CONFIG_QCOM_APCS_IPC=m
  CONFIG_TEGRA_HSP_MBOX=y
  CONFIG_BCM_PDC_MBOX=m
  CONFIG_STM32_IPCC=m
  CONFIG_MTK_CMDQ_MBOX=m
  CONFIG_SOC_TEGRA_POWERGATE_BPMP=y
  CONFIG_RESET_TEGRA_BPMP=y
  CONFIG_BTREE=y
  CONFIG_GENERIC_ATOMIC64=y
• d/kernel-headers-4.19.28-arm-1.txz
• d/meson-0.50.0-arm-1.txz
• d/ruby-2.6.2-arm-1.txz
• k/kernel-source-4.19.28-arm-1.txz
• l/at-spi2-atk-2.32.0-arm-1.txz
• l/at-spi2-core-2.32.0-arm-1.txz
• l/atk-2.32.0-arm-1.txz
• l/dconf-0.32.0-arm-1.txz
• l/dconf-editor-3.32.0-arm-1.txz
• l/giflib-5.1.7-arm-1.txz
• l/glib-networking-2.60.0.1-arm-1.txz
• l/gsettings-desktop-schemas-3.32.0-arm-1.txz
• l/gtk+3-3.24.7-arm-1.txz
• l/gvfs-1.40.0-arm-1.txz
• l/jasper-2.0.16-arm-1.txz
• l/libsoup-2.66.0-arm-1.txz
• l/python-certifi-2019.3.9-arm-1.txz
• l/vte-0.56.0-arm-1.txz
• n/mobile-broadband-provider-info-20190116-arm-1.txz
• n/mutt-1.11.4-arm-1.txz
• n/postfix-3.4.3-arm-1.txz
• n/samba-4.9.5-arm-1.txz
• x/libFS-1.0.8-arm-1.txz
• x/libXcomposite-0.4.5-arm-1.txz
• x/libXcursor-1.2.0-arm-1.txz
• x/libXdamage-1.1.5-arm-1.txz
• x/liberation-fonts-ttf-2.00.5-noarch-1.txz
• xap/gucharmap-12.0.1-arm-1.txz
• kernels/*

• isolinux/*