[Qemu-devel] [PATCH v3 37/52] acpi: add aml_eisaid() term

[Igor Mammedov]

Signed-off-by: Igor Mammedov <address@hidden>
---
 hw/acpi/aml-build.c         | 29 +++++++++++++++++++++++++++++
 include/hw/acpi/aml-build.h |  1 +
 2 files changed, 30 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index aa5ef59..90c1272 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -716,3 +716,32 @@ 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_value(var->buf, bswap32(id), sizeof(id));
+    return var;
+}
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 3cf9fbb..84fe4db 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -106,6 +106,7 @@ 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_def_block(const char *signature, uint8_t revision,
-- 
1.8.3.1