[Qemu-devel] [PATCH v4 04/20] hw/acpi/aml-build: Add aml_memory32_fixed() term

[Shannon Zhao]

From: Shannon Zhao <address@hidden>

Add aml_memory32_fixed() for describing device mmio region in resource template.
These can be used to generating DSDT table for ACPI on ARM.

Signed-off-by: Shannon Zhao <address@hidden>
Signed-off-by: Shannon Zhao <address@hidden>
---
 hw/acpi/aml-build.c         | 22 ++++++++++++++++++++++
 include/hw/acpi/aml-build.h |  1 +
 2 files changed, 23 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 8d01959..fefe7c7 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -505,6 +505,28 @@ Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, 
Aml *arg3, Aml *arg4)
     return var;
 }
 
+/*
+ * ACPI 1.0: 6.4.3.4 Memory32Fixed (Memory Resource Descriptor Macro)
+ */
+Aml *aml_memory32_fixed(uint64_t addr, uint64_t size, uint8_t rw_flag)
+{
+    Aml *var = aml_alloc();
+    build_append_byte(var->buf, 0x86); /* Memory32Fixed Resource Descriptor */
+    build_append_byte(var->buf, 9); /* Length, bits[7:0] value = 9 */
+    build_append_byte(var->buf, 0); /* Length, bits[15:8] value = 0 */
+    build_append_byte(var->buf, rw_flag); /* Write status, 1 rw 0 ro */
+    build_append_byte(var->buf, addr & 0xff); /* Range base address bits[7:0] 
*/
+    build_append_byte(var->buf, (addr >> 8) & 0xff); /* Range base address 
bits[15:8] */
+    build_append_byte(var->buf, (addr >> 16) & 0xff); /* Range base address 
bits[23:16] */
+    build_append_byte(var->buf, (addr >> 24) & 0xff); /* Range base address 
bits[31:24] */
+
+    build_append_byte(var->buf, size & 0xff); /* Range length bits[7:0] */
+    build_append_byte(var->buf, (size >> 8) & 0xff); /* Range length 
bits[15:8] */
+    build_append_byte(var->buf, (size >> 16) & 0xff); /* Range length 
bits[23:16] */
+    build_append_byte(var->buf, (size >> 24) & 0xff); /* Range length 
bits[31:24] */
+    return var;
+}
+
 /* ACPI 1.0b: 6.4.2.5 I/O Port Descriptor */
 Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base,
             uint8_t aln, uint8_t len)
diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h
index 1705001..baa0652 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -162,6 +162,7 @@ Aml *aml_call1(const char *method, Aml *arg1);
 Aml *aml_call2(const char *method, Aml *arg1, Aml *arg2);
 Aml *aml_call3(const char *method, Aml *arg1, Aml *arg2, Aml *arg3);
 Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4);
+Aml *aml_memory32_fixed(uint64_t addr, uint64_t size, uint8_t rw_flag);
 Aml *aml_io(AmlIODecode dec, uint16_t min_base, uint16_t max_base,
             uint8_t aln, uint8_t len);
 Aml *aml_operation_region(const char *name, AmlRegionSpace rs,
-- 
2.0.4