diff options
author | Hung-Te Lin <hungte@chromium.org> | 2019-05-27 11:02:00 +0800 |
---|---|---|
committer | Patrick Georgi <pgeorgi@google.com> | 2019-06-03 13:22:01 +0000 |
commit | c345570acce55a2cb13a65bf06c4e1d8069f7b36 (patch) | |
tree | c75a2e8bf0421b2554515d4c866965b14e588eb6 /src/drivers/vpd/vpd_decode.h | |
parent | 6681f05373c2ec07168e279026962d7a63539e93 (diff) |
src/driver/vpd: Update lib_vpd from upstream
Update lib_vpd.c (only containing vpd_decode.c) to latest version from
https://chromium.googlesource.com/chromiumos/platform/vpd
The called module (vpd.c) has been also corrected for new lib_vpd
types and constants.
BUG=chromium:967209
TEST=select VPD config on kukui; make; boots on at least kukui boards.
Change-Id: I3928e9c43cb87caf93fb44ee10434ce80f0a188a
Signed-off-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/33016
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Joel Kitching <kitching@google.com>
Diffstat (limited to 'src/drivers/vpd/vpd_decode.h')
-rw-r--r-- | src/drivers/vpd/vpd_decode.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/src/drivers/vpd/vpd_decode.h b/src/drivers/vpd/vpd_decode.h new file mode 100644 index 0000000000..99ca7efa81 --- /dev/null +++ b/src/drivers/vpd/vpd_decode.h @@ -0,0 +1,68 @@ +/* + * Copyright 2019 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * This is a copy from upstream: + * https://chromium.googlesource.com/chromiumos/platform/vpd/+/master/include/lib/vpd_decode.h + */ + +#ifndef __VPD_DECODE_H +#define __VPD_DECODE_H + +#include <stdint.h> + +enum { + VPD_DECODE_OK = 0, + VPD_DECODE_FAIL = 1, +}; + +enum { + VPD_TYPE_TERMINATOR = 0, + VPD_TYPE_STRING, + VPD_TYPE_INFO = 0xfe, + VPD_TYPE_IMPLICIT_TERMINATOR = 0xff, +}; + +/* Callback for vpd_decode_string to invoke. */ +typedef int vpd_decode_callback( + const u8 *key, u32 key_len, const u8 *value, u32 value_len, + void *arg); + +/* + * vpd_decode_len + * + * Given an encoded string, this function extracts the length of content + * (either key or value). The *consumed will contain the number of bytes + * consumed. + * + * The input_buf points to the first byte of the input buffer. + * + * The *consumed starts from 0, which is actually the next byte to be decoded. + * It can be non-zero to be used in multiple calls. + * + * Returns VPD_DECODE_OK on success, otherwise VPD_DECODE_FAIL. + */ +int vpd_decode_len( + const u32 max_len, const u8 *in, u32 *length, u32 *decoded_len); + +/* + * vpd_decode_string + * + * Given the encoded string, this function invokes callback with extracted + * (key, value). The *consumed will be plused the number of bytes consumed in + * this function. + * + * The input_buf points to the first byte of the input buffer. + * + * The *consumed starts from 0, which is actually the next byte to be decoded. + * It can be non-zero to be used in multiple calls. + * + * If one entry is successfully decoded, sends it to callback and returns the + * result. + */ +int vpd_decode_string( + const u32 max_len, const u8 *input_buf, u32 *consumed, + vpd_decode_callback callback, void *callback_arg); + +#endif /* __VPD_DECODE_H */ |