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qemu-irix/hw/acpi/aml-build.c

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/* Support for generating ACPI tables and passing them to Guests
*
* Copyright (C) 2015 Red Hat Inc
*
* Author: Michael S. Tsirkin <mst@redhat.com>
* Author: Igor Mammedov <imammedo@redhat.com>
*
* 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 <http://www.gnu.org/licenses/>.
*/
#include <glib/gprintf.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <stdbool.h>
#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)
{
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)
{
#if GLIB_CHECK_VERSION(2, 22, 0)
assert(g_array_get_element_size(table) == 1);
#endif
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);
}
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