722bc5b5d9
Add initial infrastructure for Xen para-virtualized block device. This includes compile-time configuration and the skeleton for the future driver implementation. Add new class UCLASS_PVBLOCK which is going to be a parent for virtual block devices. Add new interface type IF_TYPE_PVBLOCK. Implement basic driver setup by reading XenStore configuration. Signed-off-by: Andrii Anisov <andrii_anisov@epam.com> Signed-off-by: Anastasiia Lukianenko <anastasiia_lukianenko@epam.com> Signed-off-by: Oleksandr Andrushchenko <oleksandr_andrushchenko@epam.com>
31 lines
845 B
C
31 lines
845 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2020 EPAM Systems Inc.
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*
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* XEN para-virtualized block device support
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*/
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#include <blk.h>
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#include <common.h>
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#include <command.h>
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/* Current I/O Device */
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static int pvblock_curr_device;
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int do_pvblock(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
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{
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return blk_common_cmd(argc, argv, IF_TYPE_PVBLOCK,
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&pvblock_curr_device);
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}
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U_BOOT_CMD(pvblock, 5, 1, do_pvblock,
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"Xen para-virtualized block device",
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"info - show available block devices\n"
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"pvblock device [dev] - show or set current device\n"
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"pvblock part [dev] - print partition table of one or all devices\n"
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"pvblock read addr blk# cnt\n"
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"pvblock write addr blk# cnt - read/write `cnt'"
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" blocks starting at block `blk#'\n"
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" to/from memory address `addr'");
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