u-boot/cmd/host.c
Bin Meng 256f6da8cf cmd: host: Print out the block size of the host device
It's useful if we can print out the block size of the host device
in the "host info" command.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2023-10-10 16:25:48 -04:00

274 lines
6.1 KiB
C

// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2012, Google Inc.
*/
#include <common.h>
#include <command.h>
#include <dm.h>
#include <fs.h>
#include <part.h>
#include <sandbox_host.h>
#include <dm/device_compat.h>
#include <dm/device-internal.h>
#include <dm/uclass-internal.h>
#include <linux/errno.h>
#include <linux/log2.h>
static int do_host_load(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
return do_load(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
}
static int do_host_ls(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
return do_ls(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
}
static int do_host_size(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
return do_size(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
}
static int do_host_save(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
return do_save(cmdtp, flag, argc, argv, FS_TYPE_SANDBOX);
}
static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
bool removable = false;
struct udevice *dev;
const char *label;
char *file;
unsigned long blksz = DEFAULT_BLKSZ;
int ret;
/* Skip 'bind' */
argc--;
argv++;
if (argc < 2)
return CMD_RET_USAGE;
if (!strcmp(argv[0], "-r")) {
removable = true;
argc--;
argv++;
}
if (argc < 2 || argc > 3)
return CMD_RET_USAGE;
label = argv[0];
file = argv[1];
if (argc > 2) {
blksz = dectoul(argv[2], NULL);
if (blksz < DEFAULT_BLKSZ || !is_power_of_2(blksz)) {
printf("blksz must be >= 512 and power of 2\n");
return CMD_RET_FAILURE;
}
}
ret = host_create_attach_file(label, file, removable, blksz, &dev);
if (ret) {
printf("Cannot create device / bind file\n");
return CMD_RET_FAILURE;
}
return 0;
}
/**
* parse_host_label() - Parse a device label or sequence number
*
* This shows an error if it returns NULL
*
* @label: String containing the label or sequence number
* Returns: Associated device, or NULL if not found
*/
static struct udevice *parse_host_label(const char *label)
{
struct udevice *dev;
dev = host_find_by_label(label);
if (!dev) {
int devnum;
char *ep;
devnum = hextoul(label, &ep);
if (*ep ||
uclass_find_device_by_seq(UCLASS_HOST, devnum, &dev)) {
printf("No such device '%s'\n", label);
return NULL;
}
}
return dev;
}
static int do_host_unbind(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
const char *label;
int ret;
if (argc < 2)
return CMD_RET_USAGE;
label = argv[1];
dev = parse_host_label(label);
if (!dev)
return CMD_RET_FAILURE;
ret = host_detach_file(dev);
if (ret) {
printf("Cannot detach file (err=%d)\n", ret);
return CMD_RET_FAILURE;
}
ret = device_unbind(dev);
if (ret) {
printf("Cannot attach file\n");
ret = device_unbind(dev);
if (ret)
printf("Cannot unbind device '%s'\n", dev->name);
return CMD_RET_FAILURE;
}
return 0;
}
static void show_host_dev(struct udevice *dev)
{
struct host_sb_plat *plat = dev_get_plat(dev);
struct blk_desc *desc;
struct udevice *blk;
int ret;
printf("%3d ", dev_seq(dev));
if (!plat->fd) {
printf("Not bound to a backing file\n");
return;
}
ret = blk_get_from_parent(dev, &blk);
if (ret) /* cannot happen */
return;
desc = dev_get_uclass_plat(blk);
printf("%12lu %6lu %-15s %s\n", (unsigned long)desc->lba, desc->blksz,
plat->label, plat->filename);
}
static int do_host_info(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
if (argc < 1)
return CMD_RET_USAGE;
dev = NULL;
if (argc >= 2) {
dev = parse_host_label(argv[1]);
if (!dev)
return CMD_RET_FAILURE;
}
printf("%3s %12s %6s %-15s %s\n",
"dev", "blocks", "blksz", "label", "path");
if (dev) {
show_host_dev(dev);
} else {
struct uclass *uc;
uclass_id_foreach_dev(UCLASS_HOST, dev, uc)
show_host_dev(dev);
}
return 0;
}
static int do_host_dev(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct udevice *dev;
const char *label;
if (argc < 1 || argc > 3)
return CMD_RET_USAGE;
if (argc == 1) {
struct host_sb_plat *plat;
dev = host_get_cur_dev();
if (!dev) {
printf("No current host device\n");
return CMD_RET_FAILURE;
}
plat = dev_get_plat(dev);
printf("Current host device: %d: %s\n", dev_seq(dev),
plat->label);
return 0;
}
label = argv[1];
dev = parse_host_label(argv[1]);
if (!dev)
return CMD_RET_FAILURE;
host_set_cur_dev(dev);
return 0;
}
static struct cmd_tbl cmd_host_sub[] = {
U_BOOT_CMD_MKENT(load, 7, 0, do_host_load, "", ""),
U_BOOT_CMD_MKENT(ls, 3, 0, do_host_ls, "", ""),
U_BOOT_CMD_MKENT(save, 6, 0, do_host_save, "", ""),
U_BOOT_CMD_MKENT(size, 3, 0, do_host_size, "", ""),
U_BOOT_CMD_MKENT(bind, 4, 0, do_host_bind, "", ""),
U_BOOT_CMD_MKENT(unbind, 4, 0, do_host_unbind, "", ""),
U_BOOT_CMD_MKENT(info, 3, 0, do_host_info, "", ""),
U_BOOT_CMD_MKENT(dev, 0, 1, do_host_dev, "", ""),
};
static int do_host(struct cmd_tbl *cmdtp, int flag, int argc,
char *const argv[])
{
struct cmd_tbl *c;
/* Skip past 'host' */
argc--;
argv++;
c = find_cmd_tbl(argv[0], cmd_host_sub, ARRAY_SIZE(cmd_host_sub));
if (c)
return c->cmd(cmdtp, flag, argc, argv);
else
return CMD_RET_USAGE;
}
U_BOOT_CMD(
host, 8, 1, do_host,
"Miscellaneous host commands",
"load hostfs - <addr> <filename> [<bytes> <offset>] - "
"load a file from host\n"
"host ls hostfs - <filename> - list files on host\n"
"host save hostfs - <addr> <filename> <bytes> [<offset>] - "
"save a file to host\n"
"host size hostfs - <filename> - determine size of file on host\n"
"host bind [-r] <label> <filename> [<blksz>] - bind \"host\" device to file,\n"
" and optionally set the device's logical block size\n"
" -r = mark as removable\n"
"host unbind <label> - unbind file from \"host\" device\n"
"host info [<label>] - show device binding & info\n"
"host dev [<label>] - set or retrieve the current host device\n"
"host commands use the \"hostfs\" device. The \"host\" device is used\n"
"with standard IO commands such as fatls or ext2load"
);