diff options
Diffstat (limited to 'hw/acpi')
| -rw-r--r-- | hw/acpi/aml-build.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c index 7a478ae..ad4d7ea 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 +506,33 @@ Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4) return var; } +/* + * ACPI 1.0b: 6.4.3.4 32-Bit Fixed Location Memory Range Descriptor + * (Type 1, Large Item Name 0x6) + */ +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) |