/* ----------------------------------------------------------------------- *
*
* Copyright 2009-2011 Erwan Velu - All Rights Reserved
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* -----------------------------------------------------------------------
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <memory.h>
#include "acpi/acpi.h"
/* M1PS flags have to be interpreted as strings */
char *flags_to_string(char *buffer, uint16_t flags)
{
strcpy(buffer, "default");
if ((flags & POLARITY_ACTIVE_HIGH) == POLARITY_ACTIVE_HIGH)
strcpy(buffer, "high");
else if ((flags & POLARITY_ACTIVE_LOW) == POLARITY_ACTIVE_LOW)
strcpy(buffer, "low");
if ((flags & TRIGGER_EDGE) == TRIGGER_EDGE)
strncat(buffer, " edge", 5);
else if ((flags & TRIGGER_LEVEL) == TRIGGER_LEVEL)
strncat(buffer, " level", 6);
else
strncat(buffer, " default", 8);
return buffer;
}
void dbg_printf(const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
vfprintf(stderr, fmt, args);
va_end(args);
}
void init_acpi(s_acpi * acpi)
{
memset(acpi, 0, sizeof(s_acpi));
}
int parse_acpi(s_acpi * acpi)
{
int ret_val;
init_acpi(acpi);
/* Let's seach for RSDP table */
if ((ret_val = search_rsdp(acpi)) != RSDP_TABLE_FOUND)
return ret_val;
/* Let's seach for RSDT table
* That's not a big deal not having it, XSDT is far more relevant */
parse_rsdt(&acpi->rsdt);
if (parse_xsdt(acpi) != XSDT_TABLE_FOUND) {
DEBUG_PRINT(("XSDT Detection failed\n"));
for (int table=0; table <acpi->rsdt.entry_count; table++) {
parse_header((uint64_t *)acpi->rsdt.entry[table],acpi);
}
}
return ACPI_FOUND;
}
void get_acpi_description_header(uint8_t * q, s_acpi_description_header * adh)
{
cp_str_struct(adh->signature);
cp_struct(&adh->length);
cp_struct(&adh->revision);
cp_struct(&adh->checksum);
cp_str_struct(adh->oem_id);
cp_str_struct(adh->oem_table_id);
cp_struct(&adh->oem_revision);
cp_str_struct(adh->creator_id);
cp_struct(&adh->creator_revision);
DEBUG_PRINT(("acpi_header at %p = %s | %s | %s\n", q, adh->signature,adh->oem_id, adh->creator_id ));
}
bool parse_header(uint64_t *address, s_acpi *acpi) {
s_acpi_description_header adh;
memset(&adh, 0, sizeof(adh));
get_acpi_description_header((uint8_t *)address, &adh);
/* Trying to determine the pointed table */
/* Looking for FADT */
if (memcmp(adh.signature, FACP, sizeof(FACP) - 1) == 0) {
DEBUG_PRINT(("FACP table found\n"));
s_fadt *f = &acpi->fadt;
s_facs *fa = &acpi->facs;
s_dsdt *d = &acpi->dsdt;
/* This structure is valid, let's fill it */
f->valid = true;
f->address = address;
memcpy(&f->header, &adh, sizeof(adh));
parse_fadt(f);
/* FACS wasn't already detected
* FADT points to it, let's try to detect it */
if (fa->valid == false) {
fa->address = (uint64_t *)f->x_firmware_ctrl;
parse_facs(fa);
if (fa->valid == false) {
/* Let's try again */
fa->address = (uint64_t *)f->firmware_ctrl;
parse_facs(fa);
}
}
/* DSDT wasn't already detected
* FADT points to it, let's try to detect it */
if (d->valid == false) {
s_acpi_description_header new_adh;
get_acpi_description_header((uint8_t *)f->x_dsdt,
&new_adh);
if (memcmp(new_adh.signature, DSDT, sizeof(DSDT) - 1) == 0) {
DEBUG_PRINT(("DSDT table found via x_dsdt\n"));
d->valid = true;
d->address = (uint64_t *)f->x_dsdt;
memcpy(&d->header, &new_adh, sizeof(new_adh));
parse_dsdt(d);
} else {
/* Let's try again */
get_acpi_description_header((uint8_t *)f->dsdt_address,
&new_adh);
if (memcmp(new_adh.signature, DSDT, sizeof(DSDT) - 1) ==
0) {
DEBUG_PRINT(("DSDT table found via dsdt_address\n"));
d->valid = true;
d->address = (uint64_t *)f->dsdt_address;
memcpy(&d->header, &new_adh, sizeof(new_adh));
parse_dsdt(d);
}
}
}
} /* Looking for MADT */
else if (memcmp(adh.signature, APIC, sizeof(APIC) - 1) == 0) {
DEBUG_PRINT(("MADT table found\n"));
s_madt *m = &acpi->madt;
/* This structure is valid, let's fill it */
m->valid = true;
m->address =address;
memcpy(&m->header, &adh, sizeof(adh));
parse_madt(acpi);
} else if (memcmp(adh.signature, DSDT, sizeof(DSDT) - 1) == 0) {
DEBUG_PRINT(("DSDT table found\n"));
s_dsdt *d = &acpi->dsdt;
/* This structure is valid, let's fill it */
d->valid = true;
d->address = address;
memcpy(&d->header, &adh, sizeof(adh));
parse_dsdt(d);
/* PSDT have to be considered as SSDT. Intel ACPI Spec @ 5.2.11.3 */
} else if ((memcmp(adh.signature, SSDT, sizeof(SSDT) - 1) == 0)
|| (memcmp(adh.signature, PSDT, sizeof(PSDT) - 1) == 0)) {
DEBUG_PRINT(("SSDT table found with %s \n",adh.signature));
if ((acpi->ssdt_count >= MAX_SSDT - 1))
return false;
/* We can have many SSDT, so let's allocate a new one */
if ((acpi->ssdt[acpi->ssdt_count] =
malloc(sizeof(s_ssdt))) == NULL)
return false;
s_ssdt *s = acpi->ssdt[acpi->ssdt_count];
/* This structure is valid, let's fill it */
s->valid = true;
s->address = address;
memcpy(&s->header, &adh, sizeof(adh));
/* Searching how much definition blocks we must copy */
uint32_t definition_block_size = adh.length - ACPI_HEADER_SIZE;
if ((s->definition_block =
malloc(definition_block_size)) != NULL) {
memcpy(s->definition_block,
(s->address + ACPI_HEADER_SIZE),
definition_block_size);
}
/* Increment the number of ssdt we have */
acpi->ssdt_count++;
} else if (memcmp(adh.signature, SBST, sizeof(SBST) - 1) == 0) {
DEBUG_PRINT(("SBST table found\n"));
s_sbst *s = &acpi->sbst;
/* This structure is valid, let's fill it */
s->valid = true;
s->address = address;
memcpy(&s->header, &adh, sizeof(adh));
parse_sbst(s);
} else if (memcmp(adh.signature, ECDT, sizeof(ECDT) - 1) == 0) {
DEBUG_PRINT(("ECDT table found\n"));
s_ecdt *e = &acpi->ecdt;
/* This structure is valid, let's fill it */
e->valid = true;
e->address = address;
memcpy(&e->header, &adh, sizeof(adh));
parse_ecdt(e);
} else if (memcmp(adh.signature, HPET, sizeof(HPET) - 1) == 0) {
DEBUG_PRINT(("HPET table found\n"));
s_hpet *h = &acpi->hpet;
/* This structure is valid, let's fill it */
h->valid = true;
h->address = address;
memcpy(&h->header, &adh, sizeof(adh));
} else if (memcmp(adh.signature, TCPA, sizeof(TCPA) - 1) == 0) {
DEBUG_PRINT(("TCPA table found\n"));
s_tcpa *t = &acpi->tcpa;
/* This structure is valid, let's fill it */
t->valid = true;
t->address = address;
memcpy(&t->header, &adh, sizeof(adh));
} else if (memcmp(adh.signature, MCFG, sizeof(MCFG) - 1) == 0) {
DEBUG_PRINT(("MCFG table found\n"));
s_mcfg *m = &acpi->mcfg;
/* This structure is valid, let's fill it */
m->valid = true;
m->address = address;
memcpy(&m->header, &adh, sizeof(adh));
} else if (memcmp(adh.signature, SLIC, sizeof(SLIC) - 1) == 0) {
DEBUG_PRINT(("SLIC table found\n"));
s_slic *s = &acpi->slic;
/* This structure is valid, let's fill it */
s->valid = true;
s->address = address;
memcpy(&s->header, &adh, sizeof(adh));
} else if (memcmp(adh.signature, BOOT, sizeof(BOOT) - 1) == 0) {
DEBUG_PRINT(("BOOT table found\n"));
s_boot *b = &acpi->boot;
/* This structure is valid, let's fill it */
b->valid = true;
b->address = address;
memcpy(&b->header, &adh, sizeof(adh));
}
return true;
}