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acpi: add aml_eisaid() term

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Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2015-02-18 19:14:42 +00:00 committed by Michael S. Tsirkin
parent 3dd1564353
commit a7891dacad
2 changed files with 30 additions and 0 deletions
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29
hw/acpi/aml-build.c
View File

@ -665,3 +665,32 @@ Aml *aml_processor(uint8_t proc_id, uint32_t pblk_addr, uint8_t pblk_len,
build_append_byte(var->buf, pblk_len); /* PblkLen */
return var;
}
static uint8_t Hex2Digit(char c)
{
if (c >= 'A') {
return c - 'A' + 10;
}
return c - '0';
}
/* ACPI 1.0b: 15.2.3.6.4.1 EISAID Macro - Convert EISA ID String To Integer */
Aml *aml_eisaid(const char *str)
{
Aml *var = aml_alloc();
uint32_t id;
g_assert(strlen(str) == 7);
id = (str[0] - 0x40) << 26 |
(str[1] - 0x40) << 21 |
(str[2] - 0x40) << 16 |
Hex2Digit(str[3]) << 12 |
Hex2Digit(str[4]) << 8 |
Hex2Digit(str[5]) << 4 |
Hex2Digit(str[6]);
build_append_byte(var->buf, 0x0C); /* DWordPrefix */
build_append_int_noprefix(var->buf, bswap32(id), sizeof(id));
return var;
}

1
include/hw/acpi/aml-build.h
View File

@ -96,6 +96,7 @@ Aml *aml_string(const char *name_format, ...) GCC_FMT_ATTR(1, 2);
Aml *aml_equal(Aml *arg1, Aml *arg2);
Aml *aml_processor(uint8_t proc_id, uint32_t pblk_addr, uint8_t pblk_len,
const char *name_format, ...) GCC_FMT_ATTR(4, 5);
Aml *aml_eisaid(const char *str);
/* Block AML object primitives */
Aml *aml_scope(const char *name_format, ...) GCC_FMT_ATTR(1, 2);