mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-12 14:23:00 +00:00
a924641632
At present this is really just a debugging aid, but it is a bit untidy. Add proper columns and display the type name instead of a number. Sample output for coral: => acpi items Seq Type Addr Size Device/Writer --- ----- -------- ---- ------------- 0 other 79925000 240 0base 1 other 79925240 40 1facs 2 dsdt 799252a4 58 board 3 dsdt 799252fc 10 lpc 4 other 79925280 32f0 3dsdt 5 other 79928570 1000 4gnvs 6 other 79929570 100 5fact 7 other 79929670 30 5mcfg 8 other 799296a0 50 5spcr 9 other 799296f0 50 5tpm2 a other 79929740 70 5x86 b ssdt 799297d4 fe maxim-codec c ssdt 799298d2 28 i2c2@16,0 d ssdt 799298fa 270 da-codec e ssdt 79929b6a 28 i2c2@16,1 f ssdt 79929b92 28 i2c2@16,2 10 ssdt 79929bba 83 tpm@50 11 ssdt 79929c3d 28 i2c2@16,3 12 ssdt 79929c65 282 elan-touchscreen@10 13 ssdt 79929ee7 285 raydium-touchscreen@39 14 ssdt 7992a16c 28 i2c2@17,0 15 ssdt 7992a194 d8 elan-touchpad@15 16 ssdt 7992a26c 163 synaptics-touchpad@2c 17 ssdt 7992a3cf 28 i2c2@17,1 18 ssdt 7992a3f7 111 wacom-digitizer@9 19 ssdt 7992a508 8f sdmmc@1b,0 1a ssdt 7992a597 4b wifi 1b ssdt 7992a5e2 1a0 cpu@0 1c ssdt 7992a782 1a0 cpu@1 1d ssdt 7992a922 1a0 cpu@2 1e ssdt 7992aac2 211 cpu@3 1f other 799297b0 1530 6ssdt 20 other 7992ace0 2f10 8dev Signed-off-by: Simon Glass <sjg@chromium.org>
389 lines
8.8 KiB
C
389 lines
8.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Core driver model support for ACPI table generation
|
|
*
|
|
* Copyright 2019 Google LLC
|
|
* Written by Simon Glass <sjg@chromium.org>
|
|
*/
|
|
|
|
#define LOG_CATEOGRY LOGC_ACPI
|
|
|
|
#include <common.h>
|
|
#include <dm.h>
|
|
#include <log.h>
|
|
#include <malloc.h>
|
|
#include <mapmem.h>
|
|
#include <acpi/acpi_device.h>
|
|
#include <dm/acpi.h>
|
|
#include <dm/device-internal.h>
|
|
#include <dm/root.h>
|
|
|
|
#define MAX_ACPI_ITEMS 100
|
|
|
|
/**
|
|
* Type of table that we collected
|
|
*
|
|
* @TYPE_NONE: Not yet known
|
|
* @TYPE_SSDT: Items in the Secondary System Description Table
|
|
* @TYPE_DSDT: Items in the Differentiated System Description Table
|
|
* @TYPE_OTHER: Other (whole)
|
|
*/
|
|
enum gen_type_t {
|
|
TYPE_NONE,
|
|
TYPE_SSDT,
|
|
TYPE_DSDT,
|
|
TYPE_OTHER,
|
|
};
|
|
|
|
const char *gen_type_str[] = {
|
|
"-",
|
|
"ssdt",
|
|
"dsdt",
|
|
"other",
|
|
};
|
|
|
|
/* Type of method to call */
|
|
enum method_t {
|
|
METHOD_WRITE_TABLES,
|
|
METHOD_FILL_SSDT,
|
|
METHOD_INJECT_DSDT,
|
|
METHOD_SETUP_NHLT,
|
|
};
|
|
|
|
/* Prototype for all methods */
|
|
typedef int (*acpi_method)(const struct udevice *dev, struct acpi_ctx *ctx);
|
|
|
|
/**
|
|
* struct acpi_item - Holds info about ACPI data generated by a driver method
|
|
*
|
|
* @dev: Device that generated this data
|
|
* @type: Table type it refers to
|
|
* @writer: Writer that wrote this table
|
|
* @base: Pointer to base of table in its original location
|
|
* @buf: Buffer allocated to contain the data (NULL if not allocated)
|
|
* @size: Size of the data in bytes
|
|
*/
|
|
struct acpi_item {
|
|
struct udevice *dev;
|
|
const struct acpi_writer *writer;
|
|
enum gen_type_t type;
|
|
const char *base;
|
|
char *buf;
|
|
int size;
|
|
};
|
|
|
|
/* List of ACPI items collected */
|
|
static struct acpi_item acpi_item[MAX_ACPI_ITEMS];
|
|
static int item_count;
|
|
|
|
int acpi_copy_name(char *out_name, const char *name)
|
|
{
|
|
strncpy(out_name, name, ACPI_NAME_LEN);
|
|
out_name[ACPI_NAME_LEN] = '\0';
|
|
|
|
return 0;
|
|
}
|
|
|
|
int acpi_get_name(const struct udevice *dev, char *out_name)
|
|
{
|
|
struct acpi_ops *aops;
|
|
const char *name;
|
|
int ret;
|
|
|
|
aops = device_get_acpi_ops(dev);
|
|
if (aops && aops->get_name)
|
|
return aops->get_name(dev, out_name);
|
|
name = dev_read_string(dev, "acpi,name");
|
|
if (name)
|
|
return acpi_copy_name(out_name, name);
|
|
ret = acpi_device_infer_name(dev, out_name);
|
|
if (ret)
|
|
return log_msg_ret("dev", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int acpi_get_path(const struct udevice *dev, char *out_path, int maxlen)
|
|
{
|
|
const char *path;
|
|
int ret;
|
|
|
|
path = dev_read_string(dev, "acpi,path");
|
|
if (path) {
|
|
if (strlen(path) >= maxlen)
|
|
return -ENOSPC;
|
|
strcpy(out_path, path);
|
|
return 0;
|
|
}
|
|
ret = acpi_device_path(dev, out_path, maxlen);
|
|
if (ret)
|
|
return log_msg_ret("dev", ret);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* add_item() - Add a new item to the list of data collected
|
|
*
|
|
* @ctx: ACPI context
|
|
* @dev: Device that generated the data, if type != TYPE_OTHER
|
|
* @writer: Writer entry that generated the data, if type == TYPE_OTHER
|
|
* @type: Table type it refers to
|
|
* @start: The start of the data (the end is obtained from ctx->current)
|
|
* Return: 0 if OK, -ENOSPC if too many items, -ENOMEM if out of memory
|
|
*/
|
|
static int add_item(struct acpi_ctx *ctx, struct udevice *dev,
|
|
const struct acpi_writer *writer, enum gen_type_t type,
|
|
void *start)
|
|
{
|
|
struct acpi_item *item;
|
|
void *end = ctx->current;
|
|
|
|
if (item_count == MAX_ACPI_ITEMS) {
|
|
log_err("Too many items\n");
|
|
return log_msg_ret("mem", -ENOSPC);
|
|
}
|
|
|
|
item = &acpi_item[item_count];
|
|
item->dev = dev;
|
|
item->writer = writer;
|
|
item->type = type;
|
|
item->size = end - start;
|
|
item->base = start;
|
|
if (!item->size)
|
|
return 0;
|
|
if (type != TYPE_OTHER) {
|
|
item->buf = malloc(item->size);
|
|
if (!item->buf)
|
|
return log_msg_ret("mem", -ENOMEM);
|
|
memcpy(item->buf, start, item->size);
|
|
}
|
|
item_count++;
|
|
log_debug("* %s: Added type %d, %p, size %x\n", dev->name, type, start,
|
|
item->size);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int acpi_add_other_item(struct acpi_ctx *ctx, const struct acpi_writer *writer,
|
|
void *start)
|
|
{
|
|
return add_item(ctx, NULL, writer, TYPE_OTHER, start);
|
|
}
|
|
|
|
void acpi_dump_items(enum acpi_dump_option option)
|
|
{
|
|
int i;
|
|
|
|
printf("Seq Type Base Size Device/Writer\n");
|
|
printf("--- ----- -------- ---- -------------\n");
|
|
for (i = 0; i < item_count; i++) {
|
|
struct acpi_item *item = &acpi_item[i];
|
|
|
|
printf("%3x %-5s %8lx %5x %s\n", i,
|
|
gen_type_str[item->type],
|
|
(ulong)map_to_sysmem(item->base), item->size,
|
|
item->dev ? item->dev->name : item->writer->name);
|
|
if (option == ACPI_DUMP_CONTENTS) {
|
|
print_buffer(0, item->buf ? item->buf : item->base, 1,
|
|
item->size, 0);
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct acpi_item *find_acpi_item(const char *devname)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < item_count; i++) {
|
|
struct acpi_item *item = &acpi_item[i];
|
|
|
|
if (item->dev && !strcmp(devname, item->dev->name))
|
|
return item;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/**
|
|
* sort_acpi_item_type - Sort the ACPI items into the desired order
|
|
*
|
|
* This looks up the ordering in the device tree and then adds each item one by
|
|
* one into the supplied buffer
|
|
*
|
|
* @ctx: ACPI context
|
|
* @start: Start position to put the sorted items. The items will follow each
|
|
* other in sorted order
|
|
* @type: Type of items to sort
|
|
* Return: 0 if OK, -ve on error
|
|
*/
|
|
static int sort_acpi_item_type(struct acpi_ctx *ctx, void *start,
|
|
enum gen_type_t type)
|
|
{
|
|
const u32 *order;
|
|
int size;
|
|
int count;
|
|
void *ptr;
|
|
void *end = ctx->current;
|
|
|
|
ptr = start;
|
|
order = ofnode_read_chosen_prop(type == TYPE_DSDT ?
|
|
"u-boot,acpi-dsdt-order" :
|
|
"u-boot,acpi-ssdt-order", &size);
|
|
if (!order) {
|
|
log_debug("Failed to find ordering, leaving as is\n");
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* This algorithm rewrites the context buffer without changing its
|
|
* length. So there is no need to update ctx-current
|
|
*/
|
|
count = size / sizeof(u32);
|
|
while (count--) {
|
|
struct acpi_item *item;
|
|
const char *name;
|
|
ofnode node;
|
|
|
|
node = ofnode_get_by_phandle(fdt32_to_cpu(*order++));
|
|
name = ofnode_get_name(node);
|
|
item = find_acpi_item(name);
|
|
if (!item) {
|
|
log_err("Failed to find item '%s'\n", name);
|
|
return log_msg_ret("find", -ENOENT);
|
|
}
|
|
if (item->type == type) {
|
|
log_debug(" - add %s\n", item->dev->name);
|
|
memcpy(ptr, item->buf, item->size);
|
|
ptr += item->size;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If the sort order is missing an item then the output will be too
|
|
* small. Report this error since the item needs to be added to the
|
|
* ordering for the ACPI tables to be complete.
|
|
*/
|
|
if (ptr != end) {
|
|
log_warning("*** Missing bytes: ptr=%p, end=%p\n", ptr, end);
|
|
return -ENXIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
acpi_method acpi_get_method(struct udevice *dev, enum method_t method)
|
|
{
|
|
struct acpi_ops *aops;
|
|
|
|
aops = device_get_acpi_ops(dev);
|
|
if (aops) {
|
|
switch (method) {
|
|
case METHOD_WRITE_TABLES:
|
|
return aops->write_tables;
|
|
case METHOD_FILL_SSDT:
|
|
return aops->fill_ssdt;
|
|
case METHOD_INJECT_DSDT:
|
|
return aops->inject_dsdt;
|
|
case METHOD_SETUP_NHLT:
|
|
return aops->setup_nhlt;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
int acpi_recurse_method(struct acpi_ctx *ctx, struct udevice *parent,
|
|
enum method_t method, enum gen_type_t type)
|
|
{
|
|
struct udevice *dev;
|
|
acpi_method func;
|
|
int ret;
|
|
|
|
func = acpi_get_method(parent, method);
|
|
if (func) {
|
|
log_debug("- method %d, %s %p\n", method, parent->name, func);
|
|
ret = device_of_to_plat(parent);
|
|
if (ret)
|
|
return log_msg_ret("ofdata", ret);
|
|
ctx->tab_start = ctx->current;
|
|
ret = func(parent, ctx);
|
|
if (ret)
|
|
return log_msg_ret("func", ret);
|
|
|
|
/* Add the item to the internal list */
|
|
if (type != TYPE_NONE) {
|
|
ret = add_item(ctx, parent, NULL, type, ctx->tab_start);
|
|
if (ret)
|
|
return log_msg_ret("add", ret);
|
|
}
|
|
}
|
|
device_foreach_child(dev, parent) {
|
|
ret = acpi_recurse_method(ctx, dev, method, type);
|
|
if (ret)
|
|
return log_msg_ret("recurse", ret);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int acpi_fill_ssdt(struct acpi_ctx *ctx)
|
|
{
|
|
void *start = ctx->current;
|
|
int ret;
|
|
|
|
log_debug("Writing SSDT tables\n");
|
|
ret = acpi_recurse_method(ctx, dm_root(), METHOD_FILL_SSDT, TYPE_SSDT);
|
|
log_debug("Writing SSDT finished, err=%d\n", ret);
|
|
ret = sort_acpi_item_type(ctx, start, TYPE_SSDT);
|
|
if (ret)
|
|
return log_msg_ret("build", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int acpi_inject_dsdt(struct acpi_ctx *ctx)
|
|
{
|
|
void *start = ctx->current;
|
|
int ret;
|
|
|
|
log_debug("Writing DSDT tables\n");
|
|
ret = acpi_recurse_method(ctx, dm_root(), METHOD_INJECT_DSDT,
|
|
TYPE_DSDT);
|
|
log_debug("Writing DSDT finished, err=%d\n", ret);
|
|
ret = sort_acpi_item_type(ctx, start, TYPE_DSDT);
|
|
if (ret)
|
|
return log_msg_ret("build", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void acpi_reset_items(void)
|
|
{
|
|
item_count = 0;
|
|
}
|
|
|
|
int acpi_write_dev_tables(struct acpi_ctx *ctx)
|
|
{
|
|
int ret;
|
|
|
|
log_debug("Writing device tables\n");
|
|
ret = acpi_recurse_method(ctx, dm_root(), METHOD_WRITE_TABLES,
|
|
TYPE_NONE);
|
|
log_debug("Writing finished, err=%d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int acpi_setup_nhlt(struct acpi_ctx *ctx, struct nhlt *nhlt)
|
|
{
|
|
int ret;
|
|
|
|
log_debug("Setup NHLT\n");
|
|
ctx->nhlt = nhlt;
|
|
ret = acpi_recurse_method(ctx, dm_root(), METHOD_SETUP_NHLT, TYPE_NONE);
|
|
log_debug("Setup finished, err=%d\n", ret);
|
|
|
|
return ret;
|
|
}
|