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cmd: blkls: Add blkls command

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Add a command to print a list of available block device drivers,
and for each, the list of known block devices.

Signed-off-by: Niel Fourie <lusus@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stefan Roese <sr@denx.de>
This commit is contained in:
Niel Fourie 2020-03-30 17:22:58 +02:00 committed by Tom Rini
parent 2e48836895
commit e369790843
4 changed files with 72 additions and 0 deletions
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7
cmd/Kconfig
View file

@ -1088,6 +1088,13 @@ config CMD_LOADS
help
Load an S-Record file over serial line
config CMD_LSBLK
depends on BLK
bool "lsblk - list block drivers and devices"
help
Print list of available block device drivers, and for each, the list
of known block devices.
config CMD_MMC
bool "mmc"
help

1
cmd/Makefile
View file

@ -84,6 +84,7 @@ obj-$(CONFIG_CMD_LED) += led.o
obj-$(CONFIG_CMD_LICENSE) += license.o
obj-y += load.o
obj-$(CONFIG_CMD_LOG) += log.o
obj-$(CONFIG_CMD_LSBLK) += lsblk.o
obj-$(CONFIG_ID_EEPROM) += mac.o
obj-$(CONFIG_CMD_MD5SUM) += md5sum.o
obj-$(CONFIG_CMD_MEMORY) += mem.o

51
cmd/lsblk.c Normal file
View file

@ -0,0 +1,51 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2020
* Niel Fourie, DENX Software Engineering, lusus@denx.de.
*/
#include <common.h>
#include <dm.h>
static int do_lsblk(struct cmd_tbl *cmdtp, int flag, int argc, char * const argv[])
{
struct driver *d = ll_entry_start(struct driver, driver);
const int n_ents = ll_entry_count(struct driver, driver);
struct driver *entry;
struct udevice *udev;
struct uclass *uc;
struct blk_desc *desc;
int ret, i;
ret = uclass_get(UCLASS_BLK, &uc);
if (ret) {
puts("Could not get BLK uclass.\n");
return CMD_RET_FAILURE;
}
puts("Block Driver Devices\n");
puts("-----------------------------\n");
for (entry = d; entry < d + n_ents; entry++) {
if (entry->id != UCLASS_BLK)
continue;
i = 0;
printf("%-20.20s", entry->name);
uclass_foreach_dev(udev, uc) {
if (udev->driver != entry)
continue;
desc = dev_get_uclass_platdata(udev);
printf("%c %s %u", i ? ',' : ':',
blk_get_if_type_name(desc->if_type),
desc->devnum);
i++;
}
if (!i)
puts(": <none>");
puts("\n");
}
return CMD_RET_SUCCESS;
}
U_BOOT_CMD(lsblk, 1, 0, do_lsblk, "list block drivers and devices",
"- display list of block device drivers and attached block devices"
);

13
test/py/tests/test_lsblk.py Normal file
View file

@ -0,0 +1,13 @@
# SPDX-License-Identifier: GPL-2.0+
# Copyright (C) 2020
# Niel Fourie, DENX Software Engineering, lusus@denx.de
import pytest
@pytest.mark.buildconfigspec('blk')
@pytest.mark.buildconfigspec('cmd_lsblk')
def test_lsblk(u_boot_console):
"""Test that `lsblk` prints a result which includes `host`."""
output = u_boot_console.run_command('lsblk')
assert "Block Driver" in output
assert "sandbox_host_blk" in output