I am working on booting a Beaglebone Black with a custom system. But am unable to get it to boot and am seeing an error I haven’t encountered before.
I have updated all the references from /dev/mmcblk0 to /dev/mmcblk1 as well as 0:1 → 1:1, 0:2 → 1:2, 0:3 → 1:3 in the various files.
I built a uSD card with Debian, copied the .fw file with the custom system and then did a fwup -d /dev/mmcblk1 -t complete
The boot looks good right up until Unknown command ‘bootefi’ - try ‘help’ which appears to be a command that is maybe newer then the uBoot with Nerves?? So the uBoot packaged with the fw bundle is not being installed on the eMMC?? But maybe this is just a red herring… since the boot continue on.
FYI: Once completed I plan to document this and provide a patch/script to ease everyone’s pain in flashing the BBBs eMMC.
Here is the diff of the custom system:
diff --git a/fwup-ops.conf b/fwup-ops.conf
index cfed45a..65e066b 100644
--- a/fwup-ops.conf
+++ b/fwup-ops.conf
@@ -146,22 +146,22 @@ task revert.wrongplatform {
# Run "fwup /usr/share/fwup/ops.fw -t status -d /dev/rootdisk0 -q -U" to check the status.
##
task status.aa {
- require-path-on-device("/", "/dev/mmcblk0p2")
+ require-path-on-device("/", "/dev/mmcblk1p2")
require-uboot-variable(uboot-env, "nerves_fw_active", "a")
on-init { info("a") }
}
task status.ab {
- require-path-on-device("/", "/dev/mmcblk0p2")
+ require-path-on-device("/", "/dev/mmcblk1p2")
require-uboot-variable(uboot-env, "nerves_fw_active", "b")
on-init { info("a->b") }
}
task status.bb {
- require-path-on-device("/", "/dev/mmcblk0p3")
+ require-path-on-device("/", "/dev/mmcblk1p3")
require-uboot-variable(uboot-env, "nerves_fw_active", "b")
on-init { info("b") }
}
task status.ba {
- require-path-on-device("/", "/dev/mmcblk0p3")
+ require-path-on-device("/", "/dev/mmcblk1p3")
require-uboot-variable(uboot-env, "nerves_fw_active", "a")
on-init { info("b->a") }
}
diff --git a/fwup_include/fwup-common.conf b/fwup_include/fwup-common.conf
index 5b81a4e..fdbd300 100644
--- a/fwup_include/fwup-common.conf
+++ b/fwup_include/fwup-common.conf
@@ -15,8 +15,8 @@ define(NERVES_FW_PLATFORM, "bbb")
define(NERVES_FW_ARCHITECTURE, "arm")
define(NERVES_FW_AUTHOR, "Big Cove LLC")
-define(NERVES_FW_DEVPATH, "/dev/mmcblk0")
-define(NERVES_FW_APPLICATION_PART0_DEVPATH, "/dev/mmcblk0p4") # Linux part number is 1-based
+define(NERVES_FW_DEVPATH, "/dev/mmcblk1")
+define(NERVES_FW_APPLICATION_PART0_DEVPATH, "/dev/mmcblk1p4") # Linux part number is 1-based
define(NERVES_FW_APPLICATION_PART0_FSTYPE, "f2fs")
define(NERVES_FW_APPLICATION_PART0_TARGET, "/root")
define(NERVES_PROVISIONING, "${NERVES_SYSTEM}/images/fwup_include/provisioning.conf")
diff --git a/rootfs_overlay/etc/erlinit.config b/rootfs_overlay/etc/erlinit.config
index 3794fd0..efa2294 100644
--- a/rootfs_overlay/etc/erlinit.config
+++ b/rootfs_overlay/etc/erlinit.config
@@ -60,8 +60,8 @@
# the history is loaded. If this mount fails due to corruption, etc.,
# nerves_runtime will auto-format it. Your applications will need to handle
# initializing any expected files and folders.
--m /dev/mmcblk0p1:/mnt/boot:vfat:ro,nodev,noexec,nosuid:
--m /dev/mmcblk0p4:/root:f2fs:nodev:
+-m /dev/mmcblk1p1:/mnt/boot:vfat:ro,nodev,noexec,nosuid:
+-m /dev/mmcblk1p4:/root:f2fs:nodev:
-m tmpfs:/sys/fs/cgroup:tmpfs:nodev,noexec,nosuid:mode=755,size=1024k
-m cpu:/sys/fs/cgroup/cpu:cgroup:nodev,noexec,nosuid:cpu
-m memory:/sys/fs/cgroup/memory:cgroup:nodev,noexec,nosuid:memory
diff --git a/rootfs_overlay/etc/fw_env.config b/rootfs_overlay/etc/fw_env.config
index 465b66f..ab148a2 100644
--- a/rootfs_overlay/etc/fw_env.config
+++ b/rootfs_overlay/etc/fw_env.config
@@ -3,4 +3,4 @@
# See fwup.conf for offset and size
# Device name Device offset Env. size Flash sector size Number of sectors
-/dev/mmcblk0 0x100000 0x20000 0x200 256
+/dev/mmcblk1 0x100000 0x20000 0x200 256
diff --git a/uboot/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch b/uboot/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
index b463e47..006a285 100644
--- a/uboot/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
+++ b/uboot/0001-am335x_evm-uEnv.txt-bootz-n-fixes.patch
@@ -1007,7 +1007,7 @@ index 00000000..a9d8f28d
+ "echo Trying to boot Linux from eMMC ...; " \
+ "setenv mmcdev 1; " \
+ "setenv bootpart 1:2; " \
-+ "setenv mmcroot /dev/mmcblk0p2 rw; " \
++ "setenv mmcroot /dev/mmcblk1p2 rw; " \
+ "run mmcboot;\0" \
+ "emmc_android_boot=" \
+ "setenv mmcdev 1; " \
diff --git a/uboot/uboot.env b/uboot/uboot.env
index 7d34ce0..1b8821f 100644
--- a/uboot/uboot.env
+++ b/uboot/uboot.env
@@ -89,11 +89,11 @@ nerves_init=\
fi;\
setenv bootfile zImage.${nerves_fw_active};\
if test ${nerves_fw_active} = "a"; then\
- setenv uenv_root /dev/mmcblk0p2;\
- setenv bootpart 0:2;\
+ setenv uenv_root /dev/mmcblk1p2;\
+ setenv bootpart 1:2;\
else\
- setenv uenv_root /dev/mmcblk0p3;\
- setenv bootpart 0:3;\
+ setenv uenv_root /dev/mmcblk1p3;\
+ setenv bootpart 1:3;\
fi
#
@@ -122,7 +122,7 @@ fdtdir=/boot
fdtfile=undefined
devtype=mmc
# squashfs support is slow, so always load the kernel from FAT (FIXME)
-kernel_bootpart=0:1
+kernel_bootpart=1:1
# Allocate memory for calls to dma_alloc_coherent. USB WiFi adapters
# use this.
Here are the logs from two boots (Debian and Nerves):
####### Booting Nerves from eMMC ########
U-Boot SPL 2021.10 (Jul 13 2024 - 11:43:20 +0000)
Trying to boot from MMC2
U-Boot 2021.10 (Jul 13 2024 - 11:43:20 +0000)
CPU : AM335X-GP rev 2.1
Model: TI AM335x BeagleBone Black
DRAM: 512 MiB
Reset Source: Power-on reset has occurred.
RTC 32KCLK Source: External.
WDT: Started with servicing (60s timeout)
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from MMC… *** Warning - No block device, using default environment
Board: BeagleBone Black
<ethaddr> not set. Validating first E-fuse MAC
BeagleBone Black:
BeagleBone Cape EEPROM: no EEPROM at address: 0x54
BeagleBone Cape EEPROM: no EEPROM at address: 0x55
BeagleBone Cape EEPROM: no EEPROM at address: 0x56
BeagleBone Cape EEPROM: no EEPROM at address: 0x57
Net: eth2: ethernet@4a100000
board_name=[A335BNLT] …
board_rev=[000C] …
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1…
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
Unknown command ‘bootefi’ - try ‘help’
switch to partitions #0, OK
mmc1(part 0) is current device
Checking for: /uEnv.txt …
Checking for: /boot/uEnv.txt …
Bad magic number for SquashFS image.
Bad magic number for SquashFS image.
** Invalid partition 5 **
Couldn’t find partition mmc 1:5
** Invalid partition 6 **
Couldn’t find partition mmc 1:6
** Invalid partition 7 **
Couldn’t find partition mmc 1:7
=>
######### BOOTING DEBIAN ON eMMC ##########
U-Boot SPL 2022.04-ge0d31da5 (Aug 04 2023 - 18:48:26 +0000)
Trying to boot from MMC2
U-Boot 2022.04-ge0d31da5 (Aug 04 2023 - 18:48:26 +0000)
CPU : AM335X-GP rev 2.1
Model: TI AM335x BeagleBone Black
DRAM: 512 MiB
Reset Source: Power-on reset has occurred.
RTC 32KCLK Source: External.
Core: 150 devices, 14 uclasses, devicetree: separate
WDT: Started wdt@44e35000 with servicing (60s timeout)
MMC: OMAP SD/MMC: 0, OMAP SD/MMC: 1
Loading Environment from EXT4… Board: BeagleBone Black
<ethaddr> not set. Validating first E-fuse MAC
BeagleBone Black:
BeagleBone Cape EEPROM: no EEPROM at address: 0x54
BeagleBone Cape EEPROM: no EEPROM at address: 0x55
BeagleBone Cape EEPROM: no EEPROM at address: 0x56
BeagleBone Cape EEPROM: no EEPROM at address: 0x57
Net: eth2: ethernet@4a100000, eth3: usb_ether
Press SPACE to abort autoboot in 0 seconds
board_name=[A335BNLT] …
board_rev=[000C] …
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1…
libfdt fdt_check_header(): FDT_ERR_BADMAGIC
e7e[re[999;999He[6ne8Scanning disk mmc@48060000.blk…
Disk mmc@48060000.blk not ready
Scanning disk mmc@481d8000.blk…
Found 2 disks
No EFI system partition
BootOrder not defined
EFI boot manager: Cannot load any image
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc1(part 0) is current device
gpio: pin 54 (gpio 54) value is 1
Checking for: /uEnv.txt …
Checking for: /boot/uEnv.txt …
gpio: pin 55 (gpio 55) value is 1
1737 bytes read in 3 ms (565.4 KiB/s)
Loaded environment from /boot/uEnv.txt
Checking if uname_r is set in /boot/uEnv.txt…
gpio: pin 56 (gpio 56) value is 1
Running uname_boot …
loading /boot/vmlinuz-5.10.168-ti-r71 …
11342336 bytes read in 715 ms (15.1 MiB/s)
debug: [enable_uboot_overlays=1] …
debug: [enable_uboot_cape_universal=1] …
debug: [uboot_base_dtb_univ=am335x-boneblack-uboot-univ.dtb] …
uboot_overlays: [uboot_base_dtb=am335x-boneblack-uboot-univ.dtb] …
uboot_overlays: Switching too: dtb=am335x-boneblack-uboot-univ.dtb …
loading /boot/dtbs/5.10.168-ti-r71/am335x-boneblack-uboot-univ.dtb …
210757 bytes read in 17 ms (11.8 MiB/s)
Found 0 extension board(s).
uboot_overlays: [fdt_buffer=0x60000] …
uboot_overlays: loading /boot/dtbs/5.10.168-ti-r71/overlays/BB-ADC-00A0.dtbo …
645 bytes read in 4 ms (157.2 KiB/s)
uboot_overlays: loading /lib/firmware/BB-BONE-AUDI-02-00A0.dtbo …
3404 bytes read in 9 ms (369.1 KiB/s)
uboot_overlays: loading /boot/dtbs/5.10.168-ti-r71/overlays/BB-BONE-eMMC1-01-00A0.dtbo …
1605 bytes read in 4 ms (391.6 KiB/s)
uboot_overlays: uboot loading of [BB-HDMI-TDA998x-00A0.dtbo] disabled by /boot/uEnv.txt [disable_uboot_overlay_video=1]…
loading /boot/initrd.img-5.10.168-ti-r71 …
7719588 bytes read in 493 ms (14.9 MiB/s)
debug: [console=ttyS0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk1p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet] …
debug: [bootz 0x82000000 0x88080000:75caa4 88000000] …
Kernel image @ 0x82000000 [ 0x000000 - 0xad1200 ]
## Flattened Device Tree blob at 88000000
Booting using the fdt blob at 0x88000000
Loading Ramdisk to 8f8a3000, end 8ffffaa4 … OK
Loading Device Tree to 8f80b000, end 8f8a2fff … OK
Starting kernel …
[ 0.152114] l3-aon-clkctrl:0000:0: failed to disable
[ 9.645852] debugfs: Directory ‘49000000.dma’ with parent ‘dmaengine’ already present!
[ 9.678658] gpio-of-helper ocp:cape-universal: Failed to get gpio property of ‘P8_03’
[ 9.678686] gpio-of-helper ocp:cape-universal: Failed to create gpio entry
[ 10.091984] mdio_bus 4a101000.mdio: mii_bus 4a101000.mdio couldn’t get reset GPIO
[ 10.284377] omap_voltage_late_init: Voltage driver support not added
Debian GNU/Linux 11 BeagleBone ttyS0
BeagleBoard.org Debian Bullseye IoT Image 2023-09-02
Support: https://bbb.io/debian
default username:password is [debian:temppwd]
BeagleBone login:
