From: Shannon Zhao <shannon.z...@linaro.org>
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 <zhaoshengl...@huawei.com>
Signed-off-by: Shannon Zhao <shannon.z...@linaro.org>
---
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
