/* Support for generating ACPI tables and passing them to Guests * * Copyright (C) 2015 Red Hat Inc * * Author: Michael S. Tsirkin * Author: Igor Mammedov * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * You should have received a copy of the GNU General Public License along * with this program; if not, see . */ #include #include #include #include #include #include #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) { return g_array_new(false, true /* clear */, 1); } static void build_free_array(GArray *array) { g_array_free(array, true); } static void build_prepend_byte(GArray *array, uint8_t val) { g_array_prepend_val(array, val); } static void build_append_byte(GArray *array, uint8_t val) { g_array_append_val(array, val); } static void build_append_array(GArray *array, GArray *val) { g_array_append_vals(array, val->data, val->len); } #define ACPI_NAMESEG_LEN 4 static void build_append_nameseg(GArray *array, const char *seg) { int len; len = strlen(seg); assert(len <= ACPI_NAMESEG_LEN); g_array_append_vals(array, seg, len); /* Pad up to ACPI_NAMESEG_LEN characters if necessary. */ g_array_append_vals(array, "____", ACPI_NAMESEG_LEN - len); } static void GCC_FMT_ATTR(2, 0) build_append_namestringv(GArray *array, const char *format, va_list ap) { char *s; char **segs; char **segs_iter; int seg_count = 0; s = g_strdup_vprintf(format, ap); segs = g_strsplit(s, ".", 0); g_free(s); /* count segments */ segs_iter = segs; while (*segs_iter) { ++segs_iter; ++seg_count; } /* * ACPI 5.0 spec: 20.2.2 Name Objects Encoding: * "SegCount can be from 1 to 255" */ assert(seg_count > 0 && seg_count <= 255); /* handle RootPath || PrefixPath */ s = *segs; while (*s == '\\' || *s == '^') { build_append_byte(array, *s); ++s; } switch (seg_count) { case 1: if (!*s) { build_append_byte(array, 0x00); /* NullName */ } else { build_append_nameseg(array, s); } break; case 2: build_append_byte(array, 0x2E); /* DualNamePrefix */ build_append_nameseg(array, s); build_append_nameseg(array, segs[1]); break; default: build_append_byte(array, 0x2F); /* MultiNamePrefix */ build_append_byte(array, seg_count); /* handle the 1st segment manually due to prefix/root path */ build_append_nameseg(array, s); /* add the rest of segments */ segs_iter = segs + 1; while (*segs_iter) { build_append_nameseg(array, *segs_iter); ++segs_iter; } break; } g_strfreev(segs); } GCC_FMT_ATTR(2, 3) static void build_append_namestring(GArray *array, const char *format, ...) { va_list ap; va_start(ap, format); build_append_namestringv(array, format, ap); va_end(ap); } /* 5.4 Definition Block Encoding */ enum { PACKAGE_LENGTH_1BYTE_SHIFT = 6, /* Up to 63 - use extra 2 bits. */ PACKAGE_LENGTH_2BYTE_SHIFT = 4, PACKAGE_LENGTH_3BYTE_SHIFT = 12, PACKAGE_LENGTH_4BYTE_SHIFT = 20, }; static void build_prepend_package_length(GArray *package, unsigned length, bool incl_self) { uint8_t byte; unsigned length_bytes; if (length + 1 < (1 << PACKAGE_LENGTH_1BYTE_SHIFT)) { length_bytes = 1; } else if (length + 2 < (1 << PACKAGE_LENGTH_3BYTE_SHIFT)) { length_bytes = 2; } else if (length + 3 < (1 << PACKAGE_LENGTH_4BYTE_SHIFT)) { length_bytes = 3; } else { length_bytes = 4; } /* * NamedField uses PkgLength encoding but it doesn't include length * of PkgLength itself. */ if (incl_self) { /* * PkgLength is the length of the inclusive length of the data * and PkgLength's length itself when used for terms with * explitit length. */ length += length_bytes; } switch (length_bytes) { case 1: byte = length; build_prepend_byte(package, byte); return; case 4: byte = length >> PACKAGE_LENGTH_4BYTE_SHIFT; build_prepend_byte(package, byte); length &= (1 << PACKAGE_LENGTH_4BYTE_SHIFT) - 1; /* fall through */ case 3: byte = length >> PACKAGE_LENGTH_3BYTE_SHIFT; build_prepend_byte(package, byte); length &= (1 << PACKAGE_LENGTH_3BYTE_SHIFT) - 1; /* fall through */ case 2: byte = length >> PACKAGE_LENGTH_2BYTE_SHIFT; build_prepend_byte(package, byte); length &= (1 << PACKAGE_LENGTH_2BYTE_SHIFT) - 1; /* fall through */ } /* * Most significant two bits of byte zero indicate how many following bytes * are in PkgLength encoding. */ byte = ((length_bytes - 1) << PACKAGE_LENGTH_1BYTE_SHIFT) | length; build_prepend_byte(package, byte); } static void build_append_pkg_length(GArray *array, unsigned length, bool incl_self) { GArray *tmp = build_alloc_array(); build_prepend_package_length(tmp, length, incl_self); build_append_array(array, tmp); build_free_array(tmp); } static void build_package(GArray *package, uint8_t op) { build_prepend_package_length(package, package->len, true); build_prepend_byte(package, op); } static void build_extop_package(GArray *package, uint8_t op) { build_package(package, op); build_prepend_byte(package, 0x5B); /* ExtOpPrefix */ } static void build_append_int_noprefix(GArray *table, uint64_t value, int size) { int i; for (i = 0; i < size; ++i) { build_append_byte(table, value & 0xFF); value = value >> 8; } } static void build_append_int(GArray *table, uint64_t value) { if (value == 0x00) { build_append_byte(table, 0x00); /* ZeroOp */ } else if (value == 0x01) { build_append_byte(table, 0x01); /* OneOp */ } else if (value <= 0xFF) { build_append_byte(table, 0x0A); /* BytePrefix */ build_append_int_noprefix(table, value, 1); } else if (value <= 0xFFFF) { build_append_byte(table, 0x0B); /* WordPrefix */ build_append_int_noprefix(table, value, 2); } else if (value <= 0xFFFFFFFF) { build_append_byte(table, 0x0C); /* DWordPrefix */ build_append_int_noprefix(table, value, 4); } else { build_append_byte(table, 0x0E); /* QWordPrefix */ build_append_int_noprefix(table, value, 8); } } static GPtrArray *alloc_list; static Aml *aml_alloc(void) { Aml *var = g_new0(typeof(*var), 1); g_ptr_array_add(alloc_list, var); var->block_flags = AML_NO_OPCODE; var->buf = build_alloc_array(); return var; } static Aml *aml_opcode(uint8_t op) { Aml *var = aml_alloc(); var->op = op; var->block_flags = AML_OPCODE; return var; } static Aml *aml_bundle(uint8_t op, AmlBlockFlags flags) { Aml *var = aml_alloc(); var->op = op; var->block_flags = flags; return var; } static void aml_free(gpointer data, gpointer user_data) { Aml *var = data; build_free_array(var->buf); g_free(var); } Aml *init_aml_allocator(void) { Aml *var; assert(!alloc_list); alloc_list = g_ptr_array_new(); var = aml_alloc(); return var; } void free_aml_allocator(void) { g_ptr_array_foreach(alloc_list, aml_free, NULL); g_ptr_array_free(alloc_list, true); alloc_list = 0; } /* pack data with DefBuffer encoding */ static void build_buffer(GArray *array, uint8_t op) { GArray *data = build_alloc_array(); build_append_int(data, array->len); g_array_prepend_vals(array, data->data, data->len); build_free_array(data); build_package(array, op); } void aml_append(Aml *parent_ctx, Aml *child) { GArray *buf = build_alloc_array(); build_append_array(buf, child->buf); switch (child->block_flags) { case AML_OPCODE: build_append_byte(parent_ctx->buf, child->op); break; case AML_EXT_PACKAGE: build_extop_package(buf, child->op); break; case AML_PACKAGE: build_package(buf, child->op); break; case AML_RES_TEMPLATE: build_append_byte(buf, 0x79); /* EndTag */ /* * checksum operations are treated as succeeded if checksum * field is zero. [ACPI Spec 1.0b, 6.4.2.8 End Tag] */ build_append_byte(buf, 0); /* fall through, to pack resources in buffer */ case AML_BUFFER: build_buffer(buf, child->op); break; case AML_NO_OPCODE: break; default: assert(0); break; } build_append_array(parent_ctx->buf, buf); build_free_array(buf); } /* ACPI 1.0b: 16.2.5.1 Namespace Modifier Objects Encoding: DefScope */ Aml *aml_scope(const char *name_format, ...) { va_list ap; Aml *var = aml_bundle(0x10 /* ScopeOp */, AML_PACKAGE); va_start(ap, name_format); build_append_namestringv(var->buf, name_format, ap); va_end(ap); return var; } /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefReturn */ Aml *aml_return(Aml *val) { Aml *var = aml_opcode(0xA4 /* ReturnOp */); aml_append(var, val); return var; } /* * ACPI 1.0b: 16.2.3 Data Objects Encoding: * encodes: ByteConst, WordConst, DWordConst, QWordConst, ZeroOp, OneOp */ Aml *aml_int(const uint64_t val) { Aml *var = aml_alloc(); build_append_int(var->buf, val); return var; } /* * helper to construct NameString, which returns Aml object * for using with aml_append or other aml_* terms */ Aml *aml_name(const char *name_format, ...) { va_list ap; Aml *var = aml_alloc(); va_start(ap, name_format); build_append_namestringv(var->buf, name_format, ap); va_end(ap); return var; } /* ACPI 1.0b: 16.2.5.1 Namespace Modifier Objects Encoding: DefName */ Aml *aml_name_decl(const char *name, Aml *val) { Aml *var = aml_opcode(0x08 /* NameOp */); build_append_namestring(var->buf, "%s", name); aml_append(var, val); return var; } /* ACPI 1.0b: 16.2.6.1 Arg Objects Encoding */ Aml *aml_arg(int pos) { Aml *var; uint8_t op = 0x68 /* ARG0 op */ + pos; assert(pos <= 6); var = aml_opcode(op); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefStore */ Aml *aml_store(Aml *val, Aml *target) { Aml *var = aml_opcode(0x70 /* StoreOp */); aml_append(var, val); aml_append(var, target); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAnd */ Aml *aml_and(Aml *arg1, Aml *arg2) { Aml *var = aml_opcode(0x7B /* AndOp */); aml_append(var, arg1); aml_append(var, arg2); build_append_byte(var->buf, 0x00 /* NullNameOp */); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefOr */ Aml *aml_or(Aml *arg1, Aml *arg2) { Aml *var = aml_opcode(0x7D /* OrOp */); aml_append(var, arg1); aml_append(var, arg2); build_append_byte(var->buf, 0x00 /* NullNameOp */); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefShiftLeft */ Aml *aml_shiftleft(Aml *arg1, Aml *count) { Aml *var = aml_opcode(0x79 /* ShiftLeftOp */); aml_append(var, arg1); aml_append(var, count); build_append_byte(var->buf, 0x00); /* NullNameOp */ return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefShiftRight */ Aml *aml_shiftright(Aml *arg1, Aml *count) { Aml *var = aml_opcode(0x7A /* ShiftRightOp */); aml_append(var, arg1); aml_append(var, count); build_append_byte(var->buf, 0x00); /* NullNameOp */ return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLLess */ Aml *aml_lless(Aml *arg1, Aml *arg2) { Aml *var = aml_opcode(0x95 /* LLessOp */); aml_append(var, arg1); aml_append(var, arg2); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefAdd */ Aml *aml_add(Aml *arg1, Aml *arg2) { Aml *var = aml_opcode(0x72 /* AddOp */); aml_append(var, arg1); aml_append(var, arg2); build_append_byte(var->buf, 0x00 /* NullNameOp */); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefIncrement */ Aml *aml_increment(Aml *arg) { Aml *var = aml_opcode(0x75 /* IncrementOp */); aml_append(var, arg); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefIndex */ Aml *aml_index(Aml *arg1, Aml *idx) { Aml *var = aml_opcode(0x88 /* IndexOp */); aml_append(var, arg1); aml_append(var, idx); build_append_byte(var->buf, 0x00 /* NullNameOp */); return var; } /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefNotify */ Aml *aml_notify(Aml *arg1, Aml *arg2) { Aml *var = aml_opcode(0x86 /* NotifyOp */); aml_append(var, arg1); aml_append(var, arg2); return var; } /* helper to call method with 1 argument */ Aml *aml_call1(const char *method, Aml *arg1) { Aml *var = aml_alloc(); build_append_namestring(var->buf, "%s", method); aml_append(var, arg1); return var; } /* helper to call method with 2 arguments */ Aml *aml_call2(const char *method, Aml *arg1, Aml *arg2) { Aml *var = aml_alloc(); build_append_namestring(var->buf, "%s", method); aml_append(var, arg1); aml_append(var, arg2); return var; } /* helper to call method with 3 arguments */ Aml *aml_call3(const char *method, Aml *arg1, Aml *arg2, Aml *arg3) { Aml *var = aml_alloc(); build_append_namestring(var->buf, "%s", method); aml_append(var, arg1); aml_append(var, arg2); aml_append(var, arg3); return var; } /* helper to call method with 4 arguments */ Aml *aml_call4(const char *method, Aml *arg1, Aml *arg2, Aml *arg3, Aml *arg4) { Aml *var = aml_alloc(); build_append_namestring(var->buf, "%s", method); aml_append(var, arg1); aml_append(var, arg2); aml_append(var, arg3); aml_append(var, 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 5.0: 6.4.3.6 Extended Interrupt Descriptor * Type 1, Large Item Name 0x9 */ Aml *aml_interrupt(AmlConsumerAndProducer con_and_pro, AmlLevelAndEdge level_and_edge, AmlActiveHighAndLow high_and_low, AmlShared shared, uint32_t irq) { Aml *var = aml_alloc(); uint8_t irq_flags = con_and_pro | (level_and_edge << 1) | (high_and_low << 2) | (shared << 3); build_append_byte(var->buf, 0x89); /* Extended irq descriptor */ build_append_byte(var->buf, 6); /* Length, bits[7:0] minimum value = 6 */ build_append_byte(var->buf, 0); /* Length, bits[15:8] minimum value = 0 */ build_append_byte(var->buf, irq_flags); /* Interrupt Vector Information. */ build_append_byte(var->buf, 0x01); /* Interrupt table length = 1 */ /* Interrupt Number */ build_append_byte(var->buf, extract32(irq, 0, 8)); /* bits[7:0] */ build_append_byte(var->buf, extract32(irq, 8, 8)); /* bits[15:8] */ build_append_byte(var->buf, extract32(irq, 16, 8)); /* bits[23:16] */ build_append_byte(var->buf, extract32(irq, 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) { Aml *var = aml_alloc(); build_append_byte(var->buf, 0x47); /* IO port descriptor */ build_append_byte(var->buf, dec); build_append_byte(var->buf, min_base & 0xff); build_append_byte(var->buf, (min_base >> 8) & 0xff); build_append_byte(var->buf, max_base & 0xff); build_append_byte(var->buf, (max_base >> 8) & 0xff); build_append_byte(var->buf, aln); build_append_byte(var->buf, len); return var; } /* * ACPI 1.0b: 6.4.2.1.1 ASL Macro for IRQ Descriptor * * More verbose description at: * ACPI 5.0: 19.5.64 IRQNoFlags (Interrupt Resource Descriptor Macro) * 6.4.2.1 IRQ Descriptor */ Aml *aml_irq_no_flags(uint8_t irq) { uint16_t irq_mask; Aml *var = aml_alloc(); assert(irq < 16); build_append_byte(var->buf, 0x22); /* IRQ descriptor 2 byte form */ irq_mask = 1U << irq; build_append_byte(var->buf, irq_mask & 0xFF); /* IRQ mask bits[7:0] */ build_append_byte(var->buf, irq_mask >> 8); /* IRQ mask bits[15:8] */ return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLNot */ Aml *aml_lnot(Aml *arg) { Aml *var = aml_opcode(0x92 /* LNotOp */); aml_append(var, arg); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefLEqual */ Aml *aml_equal(Aml *arg1, Aml *arg2) { Aml *var = aml_opcode(0x93 /* LequalOp */); aml_append(var, arg1); aml_append(var, arg2); return var; } /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefIfElse */ Aml *aml_if(Aml *predicate) { Aml *var = aml_bundle(0xA0 /* IfOp */, AML_PACKAGE); aml_append(var, predicate); return var; } /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefElse */ Aml *aml_else(void) { Aml *var = aml_bundle(0xA1 /* ElseOp */, AML_PACKAGE); return var; } /* ACPI 1.0b: 16.2.5.3 Type 1 Opcodes Encoding: DefWhile */ Aml *aml_while(Aml *predicate) { Aml *var = aml_bundle(0xA2 /* WhileOp */, AML_PACKAGE); aml_append(var, predicate); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefMethod */ Aml *aml_method(const char *name, int arg_count) { Aml *var = aml_bundle(0x14 /* MethodOp */, AML_PACKAGE); build_append_namestring(var->buf, "%s", name); build_append_byte(var->buf, arg_count); /* MethodFlags: ArgCount */ return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefDevice */ Aml *aml_device(const char *name_format, ...) { va_list ap; Aml *var = aml_bundle(0x82 /* DeviceOp */, AML_EXT_PACKAGE); va_start(ap, name_format); build_append_namestringv(var->buf, name_format, ap); va_end(ap); return var; } /* ACPI 1.0b: 6.4.1 ASL Macros for Resource Descriptors */ Aml *aml_resource_template(void) { /* ResourceTemplate is a buffer of Resources with EndTag at the end */ Aml *var = aml_bundle(0x11 /* BufferOp */, AML_RES_TEMPLATE); return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefBuffer * Pass byte_list as NULL to request uninitialized buffer to reserve space. */ Aml *aml_buffer(int buffer_size, uint8_t *byte_list) { int i; Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER); for (i = 0; i < buffer_size; i++) { if (byte_list == NULL) { build_append_byte(var->buf, 0x0); } else { build_append_byte(var->buf, byte_list[i]); } } return var; } /* ACPI 1.0b: 16.2.5.4 Type 2 Opcodes Encoding: DefPackage */ Aml *aml_package(uint8_t num_elements) { Aml *var = aml_bundle(0x12 /* PackageOp */, AML_PACKAGE); build_append_byte(var->buf, num_elements); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefOpRegion */ Aml *aml_operation_region(const char *name, AmlRegionSpace rs, uint32_t offset, uint32_t len) { Aml *var = aml_alloc(); build_append_byte(var->buf, 0x5B); /* ExtOpPrefix */ build_append_byte(var->buf, 0x80); /* OpRegionOp */ build_append_namestring(var->buf, "%s", name); build_append_byte(var->buf, rs); build_append_int(var->buf, offset); build_append_int(var->buf, len); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: NamedField */ Aml *aml_named_field(const char *name, unsigned length) { Aml *var = aml_alloc(); build_append_nameseg(var->buf, name); build_append_pkg_length(var->buf, length, false); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: ReservedField */ Aml *aml_reserved_field(unsigned length) { Aml *var = aml_alloc(); /* ReservedField := 0x00 PkgLength */ build_append_byte(var->buf, 0x00); build_append_pkg_length(var->buf, length, false); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefField */ Aml *aml_field(const char *name, AmlAccessType type, AmlUpdateRule rule) { Aml *var = aml_bundle(0x81 /* FieldOp */, AML_EXT_PACKAGE); uint8_t flags = rule << 5 | type; build_append_namestring(var->buf, "%s", name); build_append_byte(var->buf, flags); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefCreateDWordField */ Aml *aml_create_dword_field(Aml *srcbuf, Aml *index, const char *name) { Aml *var = aml_alloc(); build_append_byte(var->buf, 0x8A); /* CreateDWordFieldOp */ aml_append(var, srcbuf); aml_append(var, index); build_append_namestring(var->buf, "%s", name); return var; } /* ACPI 1.0b: 16.2.3 Data Objects Encoding: String */ Aml *aml_string(const char *name_format, ...) { Aml *var = aml_opcode(0x0D /* StringPrefix */); va_list ap; char *s; int len; va_start(ap, name_format); len = g_vasprintf(&s, name_format, ap); va_end(ap); g_array_append_vals(var->buf, s, len + 1); g_free(s); return var; } /* ACPI 1.0b: 16.2.6.2 Local Objects Encoding */ Aml *aml_local(int num) { Aml *var; uint8_t op = 0x60 /* Local0Op */ + num; assert(num <= 7); var = aml_opcode(op); return var; } /* ACPI 2.0a: 17.2.2 Data Objects Encoding: DefVarPackage */ Aml *aml_varpackage(uint32_t num_elements) { Aml *var = aml_bundle(0x13 /* VarPackageOp */, AML_PACKAGE); build_append_int(var->buf, num_elements); return var; } /* ACPI 1.0b: 16.2.5.2 Named Objects Encoding: DefProcessor */ Aml *aml_processor(uint8_t proc_id, uint32_t pblk_addr, uint8_t pblk_len, const char *name_format, ...) { va_list ap; Aml *var = aml_bundle(0x83 /* ProcessorOp */, AML_EXT_PACKAGE); va_start(ap, name_format); build_append_namestringv(var->buf, name_format, ap); va_end(ap); build_append_byte(var->buf, proc_id); /* ProcID */ build_append_int_noprefix(var->buf, pblk_addr, sizeof(pblk_addr)); 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_int_noprefix(var->buf, bswap32(id), sizeof(id)); return var; } /* ACPI 1.0b: 6.4.3.5.5 Word Address Space Descriptor: bytes 3-5 */ static Aml *aml_as_desc_header(AmlResourceType type, AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, uint8_t type_flags) { uint8_t flags = max_fixed | min_fixed | dec; Aml *var = aml_alloc(); build_append_byte(var->buf, type); build_append_byte(var->buf, flags); build_append_byte(var->buf, type_flags); /* Type Specific Flags */ return var; } /* ACPI 1.0b: 6.4.3.5.5 Word Address Space Descriptor */ static Aml *aml_word_as_desc(AmlResourceType type, AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, uint16_t addr_gran, uint16_t addr_min, uint16_t addr_max, uint16_t addr_trans, uint16_t len, uint8_t type_flags) { Aml *var = aml_alloc(); build_append_byte(var->buf, 0x88); /* Word Address Space Descriptor */ /* minimum length since we do not encode optional fields */ build_append_byte(var->buf, 0x0D); build_append_byte(var->buf, 0x0); aml_append(var, aml_as_desc_header(type, min_fixed, max_fixed, dec, type_flags)); build_append_int_noprefix(var->buf, addr_gran, sizeof(addr_gran)); build_append_int_noprefix(var->buf, addr_min, sizeof(addr_min)); build_append_int_noprefix(var->buf, addr_max, sizeof(addr_max)); build_append_int_noprefix(var->buf, addr_trans, sizeof(addr_trans)); build_append_int_noprefix(var->buf, len, sizeof(len)); return var; } /* ACPI 1.0b: 6.4.3.5.3 DWord Address Space Descriptor */ static Aml *aml_dword_as_desc(AmlResourceType type, AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, uint32_t addr_gran, uint32_t addr_min, uint32_t addr_max, uint32_t addr_trans, uint32_t len, uint8_t type_flags) { Aml *var = aml_alloc(); build_append_byte(var->buf, 0x87); /* DWord Address Space Descriptor */ /* minimum length since we do not encode optional fields */ build_append_byte(var->buf, 23); build_append_byte(var->buf, 0x0); aml_append(var, aml_as_desc_header(type, min_fixed, max_fixed, dec, type_flags)); build_append_int_noprefix(var->buf, addr_gran, sizeof(addr_gran)); build_append_int_noprefix(var->buf, addr_min, sizeof(addr_min)); build_append_int_noprefix(var->buf, addr_max, sizeof(addr_max)); build_append_int_noprefix(var->buf, addr_trans, sizeof(addr_trans)); build_append_int_noprefix(var->buf, len, sizeof(len)); return var; } /* ACPI 1.0b: 6.4.3.5.1 QWord Address Space Descriptor */ static Aml *aml_qword_as_desc(AmlResourceType type, AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, uint64_t addr_gran, uint64_t addr_min, uint64_t addr_max, uint64_t addr_trans, uint64_t len, uint8_t type_flags) { Aml *var = aml_alloc(); build_append_byte(var->buf, 0x8A); /* QWord Address Space Descriptor */ /* minimum length since we do not encode optional fields */ build_append_byte(var->buf, 0x2B); build_append_byte(var->buf, 0x0); aml_append(var, aml_as_desc_header(type, min_fixed, max_fixed, dec, type_flags)); build_append_int_noprefix(var->buf, addr_gran, sizeof(addr_gran)); build_append_int_noprefix(var->buf, addr_min, sizeof(addr_min)); build_append_int_noprefix(var->buf, addr_max, sizeof(addr_max)); build_append_int_noprefix(var->buf, addr_trans, sizeof(addr_trans)); build_append_int_noprefix(var->buf, len, sizeof(len)); return var; } /* * ACPI 1.0b: 6.4.3.5.6 ASL Macros for WORD Address Descriptor * * More verbose description at: * ACPI 5.0: 19.5.141 WordBusNumber (Word Bus Number Resource Descriptor Macro) */ Aml *aml_word_bus_number(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, uint16_t addr_gran, uint16_t addr_min, uint16_t addr_max, uint16_t addr_trans, uint16_t len) { return aml_word_as_desc(AML_BUS_NUMBER_RANGE, min_fixed, max_fixed, dec, addr_gran, addr_min, addr_max, addr_trans, len, 0); } /* * ACPI 1.0b: 6.4.3.5.6 ASL Macros for WORD Address Descriptor * * More verbose description at: * ACPI 5.0: 19.5.142 WordIO (Word IO Resource Descriptor Macro) */ Aml *aml_word_io(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, AmlISARanges isa_ranges, uint16_t addr_gran, uint16_t addr_min, uint16_t addr_max, uint16_t addr_trans, uint16_t len) { return aml_word_as_desc(AML_IO_RANGE, min_fixed, max_fixed, dec, addr_gran, addr_min, addr_max, addr_trans, len, isa_ranges); } /* * ACPI 1.0b: 6.4.3.5.4 ASL Macros for DWORD Address Descriptor * * More verbose description at: * ACPI 5.0: 19.5.33 DWordIO (DWord IO Resource Descriptor Macro) */ Aml *aml_dword_io(AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlDecode dec, AmlISARanges isa_ranges, uint32_t addr_gran, uint32_t addr_min, uint32_t addr_max, uint32_t addr_trans, uint32_t len) { return aml_dword_as_desc(AML_IO_RANGE, min_fixed, max_fixed, dec, addr_gran, addr_min, addr_max, addr_trans, len, isa_ranges); } /* * ACPI 1.0b: 6.4.3.5.4 ASL Macros for DWORD Address Space Descriptor * * More verbose description at: * ACPI 5.0: 19.5.34 DWordMemory (DWord Memory Resource Descriptor Macro) */ Aml *aml_dword_memory(AmlDecode dec, AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlCacheable cacheable, AmlReadAndWrite read_and_write, uint32_t addr_gran, uint32_t addr_min, uint32_t addr_max, uint32_t addr_trans, uint32_t len) { uint8_t flags = read_and_write | (cacheable << 1); return aml_dword_as_desc(AML_MEMORY_RANGE, min_fixed, max_fixed, dec, addr_gran, addr_min, addr_max, addr_trans, len, flags); } /* * ACPI 1.0b: 6.4.3.5.2 ASL Macros for QWORD Address Space Descriptor * * More verbose description at: * ACPI 5.0: 19.5.102 QWordMemory (QWord Memory Resource Descriptor Macro) */ Aml *aml_qword_memory(AmlDecode dec, AmlMinFixed min_fixed, AmlMaxFixed max_fixed, AmlCacheable cacheable, AmlReadAndWrite read_and_write, uint64_t addr_gran, uint64_t addr_min, uint64_t addr_max, uint64_t addr_trans, uint64_t len) { uint8_t flags = read_and_write | (cacheable << 1); return aml_qword_as_desc(AML_MEMORY_RANGE, min_fixed, max_fixed, dec, addr_gran, addr_min, addr_max, addr_trans, len, flags); } static uint8_t Hex2Byte(const char *src) { int hi, lo; hi = Hex2Digit(src[0]); assert(hi >= 0); assert(hi <= 15); lo = Hex2Digit(src[1]); assert(lo >= 0); assert(lo <= 15); return (hi << 4) | lo; } /* * ACPI 3.0: 17.5.124 ToUUID (Convert String to UUID Macro) * e.g. UUID: aabbccdd-eeff-gghh-iijj-kkllmmnnoopp * call aml_touuid("aabbccdd-eeff-gghh-iijj-kkllmmnnoopp"); */ Aml *aml_touuid(const char *uuid) { Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER); assert(strlen(uuid) == 36); assert(uuid[8] == '-'); assert(uuid[13] == '-'); assert(uuid[18] == '-'); assert(uuid[23] == '-'); build_append_byte(var->buf, Hex2Byte(uuid + 6)); /* dd - at offset 00 */ build_append_byte(var->buf, Hex2Byte(uuid + 4)); /* cc - at offset 01 */ build_append_byte(var->buf, Hex2Byte(uuid + 2)); /* bb - at offset 02 */ build_append_byte(var->buf, Hex2Byte(uuid + 0)); /* aa - at offset 03 */ build_append_byte(var->buf, Hex2Byte(uuid + 11)); /* ff - at offset 04 */ build_append_byte(var->buf, Hex2Byte(uuid + 9)); /* ee - at offset 05 */ build_append_byte(var->buf, Hex2Byte(uuid + 16)); /* hh - at offset 06 */ build_append_byte(var->buf, Hex2Byte(uuid + 14)); /* gg - at offset 07 */ build_append_byte(var->buf, Hex2Byte(uuid + 19)); /* ii - at offset 08 */ build_append_byte(var->buf, Hex2Byte(uuid + 21)); /* jj - at offset 09 */ build_append_byte(var->buf, Hex2Byte(uuid + 24)); /* kk - at offset 10 */ build_append_byte(var->buf, Hex2Byte(uuid + 26)); /* ll - at offset 11 */ build_append_byte(var->buf, Hex2Byte(uuid + 28)); /* mm - at offset 12 */ build_append_byte(var->buf, Hex2Byte(uuid + 30)); /* nn - at offset 13 */ build_append_byte(var->buf, Hex2Byte(uuid + 32)); /* oo - at offset 14 */ build_append_byte(var->buf, Hex2Byte(uuid + 34)); /* pp - at offset 15 */ return var; } /* * ACPI 2.0b: 16.2.3.6.4.3 Unicode Macro (Convert Ascii String To Unicode) */ Aml *aml_unicode(const char *str) { int i = 0; Aml *var = aml_bundle(0x11 /* BufferOp */, AML_BUFFER); do { build_append_byte(var->buf, str[i]); build_append_byte(var->buf, 0); i++; } while (i <= strlen(str)); return var; } void build_header(GArray *linker, GArray *table_data, AcpiTableHeader *h, const char *sig, int len, uint8_t rev) { memcpy(&h->signature, sig, 4); h->length = cpu_to_le32(len); h->revision = rev; memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6); memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4); memcpy(h->oem_table_id + 4, sig, 4); h->oem_revision = cpu_to_le32(1); memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4); h->asl_compiler_revision = cpu_to_le32(1); h->checksum = 0; /* Checksum to be filled in by Guest linker */ bios_linker_loader_add_checksum(linker, ACPI_BUILD_TABLE_FILE, table_data->data, h, len, &h->checksum); } void *acpi_data_push(GArray *table_data, unsigned size) { unsigned off = table_data->len; g_array_set_size(table_data, off + size); return table_data->data + off; } unsigned acpi_data_len(GArray *table) { assert(g_array_get_element_size(table) == 1); return table->len; } void acpi_add_table(GArray *table_offsets, GArray *table_data) { uint32_t offset = cpu_to_le32(table_data->len); g_array_append_val(table_offsets, offset); } void acpi_build_tables_init(AcpiBuildTables *tables) { tables->rsdp = g_array_new(false, true /* clear */, 1); tables->table_data = g_array_new(false, true /* clear */, 1); tables->tcpalog = g_array_new(false, true /* clear */, 1); tables->linker = bios_linker_loader_init(); } void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre) { void *linker_data = bios_linker_loader_cleanup(tables->linker); g_free(linker_data); g_array_free(tables->rsdp, true); g_array_free(tables->table_data, true); g_array_free(tables->tcpalog, mfre); } /* Build rsdt table */ void build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets) { AcpiRsdtDescriptorRev1 *rsdt; size_t rsdt_len; int i; const int table_data_len = (sizeof(uint32_t) * table_offsets->len); rsdt_len = sizeof(*rsdt) + table_data_len; rsdt = acpi_data_push(table_data, rsdt_len); memcpy(rsdt->table_offset_entry, table_offsets->data, table_data_len); for (i = 0; i < table_offsets->len; ++i) { /* rsdt->table_offset_entry to be filled by Guest linker */ bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE, ACPI_BUILD_TABLE_FILE, table_data, &rsdt->table_offset_entry[i], sizeof(uint32_t)); } build_header(linker, table_data, (void *)rsdt, "RSDT", rsdt_len, 1); }