[DistroKit] [PATCH v2 3/4] v8a: barebox: enable loading kernel, dtb and initrd via fastboot

[Johannes Zink <j.zink@pengutronix.de>]

This allows to load kernel, dtb and initrd as sparse images to
RAM-files.

While at it, also enable the acm gadget, which exposes the barebox shell
as an USB gadget and autostart the usb gadgets.

Also expose mmc{0,1,2} as fastboot partitions and add init script to
force barebox to detect these devices and have them available for
fastboot.

Signed-off-by: Johannes Zink <j.zink@pengutronix.de>

---

Changes:

v1 -> v2:
 - worked in Ahmad's and Jan's review findings, thanks for your review:
   - use generic names mmc{0,1,2} instead of {sd,emmc, } to allow
     generic reuse of the fastboot partitions across multiple boards
   - use more obvious partition names ram-{kernel,initramfs,oftree} to
   - add init script for detecting /dev/mmc{0,1,2}
---
 configs/platform-v8a/barebox-common-defaultenv/init/detect-mmcs       | 3 +++
 configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.acm        | 1 +
 configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.bbu        | 1 +
 configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.partitions | 1 +
 configs/platform-v8a/barebox-common-defaultenv/nv/usbgadget.autostart | 1 +
 5 files changed, 7 insertions(+)

diff --git a/configs/platform-v8a/barebox-common-defaultenv/init/detect-mmcs b/configs/platform-v8a/barebox-common-defaultenv/init/detect-mmcs
new file mode 100755
index 000000000000..e3433f6da09f
--- /dev/null
+++ b/configs/platform-v8a/barebox-common-defaultenv/init/detect-mmcs
@@ -0,0 +1,3 @@
+#!/bin/sh
+
+detect mmc0 mmc1 mmc2
diff --git a/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.acm b/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.acm
new file mode 100644
index 000000000000..d00491fd7e5b
--- /dev/null
+++ b/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.acm
@@ -0,0 +1 @@
+1
diff --git a/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.bbu b/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.bbu
new file mode 100644
index 000000000000..d00491fd7e5b
--- /dev/null
+++ b/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.bbu
@@ -0,0 +1 @@
+1
diff --git a/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.partitions b/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.partitions
new file mode 100644
index 000000000000..527925e1c58b
--- /dev/null
+++ b/configs/platform-v8a/barebox-common-defaultenv/nv/fastboot.partitions
@@ -0,0 +1 @@
+/dev/mmc0(mmc0)o,/dev/mmc1(mmc1)o,/dev/mmc2(mmc2)o,/tmp/ram-kernel(ram-kernel)c,/tmp/ram-initramfs(ram-initramfs)c,/tmp/ram-oftree(ram-oftree)c
diff --git a/configs/platform-v8a/barebox-common-defaultenv/nv/usbgadget.autostart b/configs/platform-v8a/barebox-common-defaultenv/nv/usbgadget.autostart
new file mode 100644
index 000000000000..d00491fd7e5b
--- /dev/null
+++ b/configs/platform-v8a/barebox-common-defaultenv/nv/usbgadget.autostart
@@ -0,0 +1 @@
+1

-- 
2.39.2