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[Qemu-devel] [PATCH v5 04/20] hw/acpi/aml-build: Add aml_memory32_fixed(


From: Shannon Zhao
Subject: [Qemu-devel] [PATCH v5 04/20] hw/acpi/aml-build: Add aml_memory32_fixed() term
Date: Wed, 15 Apr 2015 21:24:53 +0800

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         | 27 +++++++++++++++++++++++++++
 include/hw/acpi/aml-build.h |  2 ++
 2 files changed, 29 insertions(+)

diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 8d01959..61407b7 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -26,6 +26,7 @@
 #include <string.h>
 #include "hw/acpi/aml-build.h"
 #include "qemu/bswap.h"
+#include "qemu/bitops.h"
 #include "hw/acpi/bios-linker-loader.h"
 
 static GArray *build_alloc_array(void)
@@ -505,6 +506,32 @@ 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(uint32_t addr, uint32_t size,
+                        AmlReadAndWrite read_and_write)
+{
+    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, read_and_write); /* Write status, 1 rw 0 ro */
+
+    /* Range base address */
+    build_append_byte(var->buf, extract32(addr, 0, 8)); /* bits[7:0] */
+    build_append_byte(var->buf, extract32(addr, 8, 8)); /* bits[15:8] */
+    build_append_byte(var->buf, extract32(addr, 16, 8)); /* bits[23:16] */
+    build_append_byte(var->buf, extract32(addr, 24, 8)); /* bits[31:24] */
+
+    /* Range length */
+    build_append_byte(var->buf, extract32(size, 0, 8)); /* bits[7:0] */
+    build_append_byte(var->buf, extract32(size, 8, 8)); /* bits[15:8] */
+    build_append_byte(var->buf, extract32(size, 16, 8)); /* bits[23:16] */
+    build_append_byte(var->buf, extract32(size, 24, 8)); /* 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..154823b 100644
--- a/include/hw/acpi/aml-build.h
+++ b/include/hw/acpi/aml-build.h
@@ -162,6 +162,8 @@ 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(uint32_t addr, uint32_t size,
+                        AmlReadAndWrite read_and_write);
 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





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