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acpi: Support writing a name

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ACPI supports storing names which are made up of multiple path components.
Several special cases are supported. Add a function to emit a name.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass
2020-07-07 13:11:54 -06:00
committed by Bin Meng
parent 3df33bda5c
commit 7aed90d44c
4 changed files with 231 additions and 0 deletions
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25
include/acpi/acpigen.h
View File

@@ -21,12 +21,15 @@ struct acpi_ctx;
enum {
ZERO_OP = 0x00,
ONE_OP = 0x01,
NAME_OP = 0x08,
BYTE_PREFIX = 0x0a,
WORD_PREFIX = 0x0b,
DWORD_PREFIX = 0x0c,
STRING_PREFIX = 0x0d,
QWORD_PREFIX = 0x0e,
PACKAGE_OP = 0x12,
DUAL_NAME_PREFIX = 0x2e,
MULTI_NAME_PREFIX = 0x2f,
};
/**
@@ -165,4 +168,26 @@ void acpigen_write_integer(struct acpi_ctx *ctx, u64 data);
* @str: String to write
*/
void acpigen_write_string(struct acpi_ctx *ctx, const char *str);
/**
* acpigen_emit_namestring() - Emit an ACPI name
*
* This writes out an ACPI name or path in the required special format. It does
* not add the NAME_OP prefix.
*
* @ctx: ACPI context pointer
* @namepath: Name / path to emit
*/
void acpigen_emit_namestring(struct acpi_ctx *ctx, const char *namepath);
/**
* acpigen_write_name() - Write out an ACPI name
*
* This writes out an ACPI name or path in the required special format with a
* NAME_OP prefix.
*
* @ctx: ACPI context pointer
* @namepath: Name / path to emit
*/
void acpigen_write_name(struct acpi_ctx *ctx, const char *namepath);
#endif

17
include/test/ut.h
View File

@@ -134,6 +134,23 @@ int ut_check_console_dump(struct unit_test_state *uts, int total_bytes);
} \
}
/*
* Assert that two string expressions are equal, up to length of the
* first
*/
#define ut_asserteq_strn(expr1, expr2) { \
const char *_val1 = (expr1), *_val2 = (expr2); \
int _len = strlen(_val1); \
\
if (memcmp(_val1, _val2, _len)) { \
ut_failf(uts, __FILE__, __LINE__, __func__, \
#expr1 " = " #expr2, \
"Expected \"%.*s\", got \"%.*s\"", \
_len, _val1, _len, _val2); \
return CMD_RET_FAILURE; \
} \
}
/* Assert that two memory areas are equal */
#define ut_asserteq_mem(expr1, expr2, len) { \
const u8 *_val1 = (u8 *)(expr1), *_val2 = (u8 *)(expr2); \