From: Igor Mammedov <[email protected]>
Signed-off-by: Igor Mammedov <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
---
include/hw/acpi/aml-build.h | 1 +
hw/acpi/aml-build.c | 29 +++++++++++++++++++++++++++++
2 files changed, 30 insertions(+)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 58bbbfe..bf94155 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -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);
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 9081b49..eeb006f 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -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;
+}
--
MST
