Signed-off-by: Igor Mammedov <imamm...@redhat.com>
---
hw/acpi/acpi_gen_utils.c | 31 +++++++++++++++++++++++++++++++
include/hw/acpi/acpi_gen_utils.h | 1 +
2 files changed, 32 insertions(+)
diff --git a/hw/acpi/acpi_gen_utils.c b/hw/acpi/acpi_gen_utils.c
index 4606d1e..68d1855 100644
--- a/hw/acpi/acpi_gen_utils.c
+++ b/hw/acpi/acpi_gen_utils.c
@@ -2,7 +2,9 @@
#include <stdarg.h>
#include <assert.h>
#include <stdbool.h>
+#include <string.h>
#include "hw/acpi/acpi_gen_utils.h"
+#include "qemu/bswap.h"
GArray *build_alloc_array(void)
{
@@ -633,3 +635,32 @@ acpi_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 5.0: 19.5.36 EISAID (EISA ID String To Integer Conversion Macro) */
+AcpiAml acpi_eisaid(const char *str)
+{
+ AcpiAml var = aml_allocate_internal(0, NON_BLOCK);
+ 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_value(var.buf, bswap32(id), sizeof(id));
+ return var;
+}
diff --git a/include/hw/acpi/acpi_gen_utils.h b/include/hw/acpi/acpi_gen_utils.h
index 753171f..02d5aa8 100644
--- a/include/hw/acpi/acpi_gen_utils.h
+++ b/include/hw/acpi/acpi_gen_utils.h
@@ -64,6 +64,7 @@ AcpiAml acpi_equal(AcpiAml arg1, AcpiAml arg2);
AcpiAml GCC_FMT_ATTR(4, 5)
acpi_processor(uint8_t proc_id, uint32_t pblk_addr, uint8_t pblk_len,
const char *name_format, ...);
+AcpiAml acpi_eisaid(const char *str);
/* Block ASL object primitives */
AcpiAml acpi_if(AcpiAml predicate);
--
1.8.3.1
