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authorStefan Brüns2016-08-11 22:52:03 +0200
committerSimon Glass2016-09-18 21:04:38 -0600
commit2945eb73dd988cbd9775395128935256deb9a96e (patch)
tree8c24b28cc1c81ae14fdf8cd3ff8c5c4ca914bb37
parent9a6535e05f17acf03e891266a650cb6029124743 (diff)
sandbox: document support of block device emulation
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Acked-by: Simon Glass <sjg@chromium.org> Changed 'Sandbox' to 'sandbox' in subject: Signed-off-by: Simon Glass <sjg@chromium.org>
-rw-r--r--board/sandbox/README.sandbox19
1 files changed, 19 insertions, 0 deletions
diff --git a/board/sandbox/README.sandbox b/board/sandbox/README.sandbox
index ed820d338e5..02d8ab3d09d 100644
--- a/board/sandbox/README.sandbox
+++ b/board/sandbox/README.sandbox
@@ -320,6 +320,25 @@ CONFIG_SPI_IDLE_VAL
The idle value on the SPI bus
+Block Device Emulation
+----------------------
+
+U-Boot can use raw disk images for block device emulation. To e.g. list
+the contents of the root directory on the second partion of the image
+"disk.raw", you can use the following commands:
+
+=>host bind 0 ./disk.raw
+=>ls host 0:2
+
+A disk image can be created using the following commands:
+
+$> truncate -s 1200M ./disk.raw
+$> echo -e "label: gpt\n,64M,U\n,,L" | /usr/sbin/sfdisk ./disk.raw
+$> lodev=`sudo losetup -P -f --show ./disk.raw`
+$> sudo mkfs.vfat -n EFI -v ${lodev}p1
+$> sudo mkfs.ext4 -L ROOT -v ${lodev}p2
+
+
Writing Sandbox Drivers
-----------------------