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blk: sandbox: Support binding a device with a given logical block size

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Allow optionally set the logical block size of the host device to
bind in the "host bind" command. If not given, defaults to 512.

Signed-off-by: Bin Meng <bmeng@tinylab.org>
This commit is contained in:
Bin Meng
2023-09-26 16:43:33 +08:00
committed by Tom Rini
parent 77ca9d7457
commit 8897faba2d
5 changed files with 37 additions and 14 deletions
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16
cmd/host.c
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@@ -13,6 +13,7 @@
#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[])
@@ -45,6 +46,7 @@ static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc,
struct udevice *dev;
const char *label;
char *file;
unsigned long blksz = DEFAULT_BLKSZ;
int ret;
/* Skip 'bind' */
@@ -59,12 +61,19 @@ static int do_host_bind(struct cmd_tbl *cmdtp, int flag, int argc,
argv++;
}
if (argc != 2)
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, &dev);
ret = host_create_attach_file(label, file, removable, blksz, &dev);
if (ret) {
printf("Cannot create device / bind file\n");
return CMD_RET_FAILURE;
@@ -253,7 +262,8 @@ U_BOOT_CMD(
"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> - bind \"host\" device to file\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"