/*
- * LinuxBIOS ACPI Table support
+ * This file is part of the coreboot project.
+ *
+ * coreboot ACPI Table support
* written by Stefan Reinauer <stepan@openbios.org>
- * (C) 2004 SUSE LINUX AG
- * (C) 2005 Stefan Reinauer
+ *
+ * Copyright (C) 2004 SUSE LINUX AG
+ * Copyright (C) 2005-2009 coresystems GmbH
*
* ACPI FADT, FACS, and DSDT table support added by
* Nick Barker <nick.barker9@btinternet.com>, and those portions
- * (C) Copyright 2004 Nick Barker
+ * Copyright (C) 2004 Nick Barker
*
- * Copyright 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved.
- * 2005.9 yhlu add SRAT relate
+ * Copyright (C) 2005 ADVANCED MICRO DEVICES, INC. All Rights Reserved.
+ * 2005.9 yhlu add SRAT table generation
*/
/*
* write_acpi_tables()
* acpi_dump_apics()
*
- * See AMD Solo, Island Aruma or Via Epia-M port for more details.
+ * See Kontron 986LCD-M port for a good example of an ACPI implementation
+ * in coreboot.
*/
#include <console/console.h>
#include <string.h>
#include <arch/acpi.h>
+#include <arch/acpigen.h>
#include <device/pci.h>
+#include <cbmem.h>
u8 acpi_checksum(u8 *table, u32 length)
{
return -ret;
}
-/*
- * add an acpi table to rsdt structure, and recalculate checksum
+/**
+ * Add an ACPI table to the RSDT (and XSDT) structure, recalculate length and checksum
*/
-void acpi_add_table(acpi_rsdt_t *rsdt, void *table)
+void acpi_add_table(acpi_rsdp_t *rsdp, void *table)
{
- int i;
+ int i, entries_num;
+ acpi_rsdt_t *rsdt;
+ acpi_xsdt_t *xsdt = NULL;
+
+ /* The RSDT is mandatory ... */
+ rsdt = (acpi_rsdt_t *)rsdp->rsdt_address;
+
+ /* ... while the XSDT is not */
+ if (rsdp->xsdt_address) {
+ xsdt = (acpi_xsdt_t *)((u32)rsdp->xsdt_address);
+ }
- int entries_num = sizeof(rsdt->entry)/sizeof(rsdt->entry[0]);
-
- for (i=0; i<entries_num; i++) {
- if(rsdt->entry[i]==0) {
- rsdt->entry[i]=(u32)table;
- /* fix length to stop kernel winging about invalid entries */
- rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
- /* fix checksum */
- /* hope this won't get optimized away */
- rsdt->header.checksum=0;
- rsdt->header.checksum=acpi_checksum((u8 *)rsdt,
- rsdt->header.length);
-
- printk_debug("ACPI: added table %d/%d Length now %d\n",i+1, entries_num, rsdt->header.length);
- return;
- }
+ /* This should always be MAX_ACPI_TABLES */
+ entries_num = ARRAY_SIZE(rsdt->entry);
+
+ for (i = 0; i < entries_num; i++) {
+ if(rsdt->entry[i] == 0)
+ break;
+ }
+
+ if (i >= entries_num) {
+ printk_err("ACPI: Error: Could not add ACPI table, too many tables.\n");
+ return;
+ }
+
+ /* Add table to the RSDT */
+ rsdt->entry[i] = (u32)table;
+
+ /* Fix RSDT length or the kernel will assume invalid entries */
+ rsdt->header.length = sizeof(acpi_header_t) + (sizeof(u32) * (i+1));
+
+ /* Re-calculate checksum */
+ rsdt->header.checksum = 0; /* Hope this won't get optimized away */
+ rsdt->header.checksum = acpi_checksum((u8 *)rsdt,
+ rsdt->header.length);
+
+ /* And now the same thing for the XSDT. We use the same index as for
+ * now we want the XSDT and RSDT to always be in sync in coreboot.
+ */
+ if (xsdt) {
+ /* Add table to the XSDT */
+ xsdt->entry[i]=(u64)(u32)table;
+
+ /* Fix XSDT length */
+ xsdt->header.length = sizeof(acpi_header_t) +
+ (sizeof(u64) * (i+1));
+
+ /* Re-calculate checksum */
+ xsdt->header.checksum=0;
+ xsdt->header.checksum=acpi_checksum((u8 *)xsdt,
+ xsdt->header.length);
}
- printk_warning("ACPI: could not add ACPI table to RSDT. failed.\n");
+ printk_debug("ACPI: added table %d/%d Length now %d\n",
+ i+1, entries_num, rsdt->header.length);
}
+int acpi_create_mcfg_mmconfig(acpi_mcfg_mmconfig_t *mmconfig, u32 base, u16 seg_nr, u8 start, u8 end)
+{
+ mmconfig->base_address = base;
+ mmconfig->base_reserved = 0;
+ mmconfig->pci_segment_group_number = seg_nr;
+ mmconfig->start_bus_number = start;
+ mmconfig->end_bus_number = end;
+ return (sizeof(acpi_mcfg_mmconfig_t));
+}
int acpi_create_madt_lapic(acpi_madt_lapic_t *lapic, u8 cpu, u8 apic)
{
return(lapic->length);
}
+unsigned long acpi_create_madt_lapics(unsigned long current)
+{
+ device_t cpu;
+ int cpu_index = 0;
+
+ for(cpu = all_devices; cpu; cpu = cpu->next) {
+ if ((cpu->path.type != DEVICE_PATH_APIC) ||
+ (cpu->bus->dev->path.type != DEVICE_PATH_APIC_CLUSTER)) {
+ continue;
+ }
+ if (!cpu->enabled) {
+ continue;
+ }
+ current += acpi_create_madt_lapic((acpi_madt_lapic_t *)current, cpu_index, cpu->path.apic.apic_id);
+ cpu_index++;
+ }
+ return current;
+}
+
int acpi_create_madt_ioapic(acpi_madt_ioapic_t *ioapic, u8 id, u32 addr,u32 gsi_base)
{
ioapic->type=1;
memset((void *)madt, 0, sizeof(acpi_madt_t));
/* fill out header fields */
- memcpy(header->signature, MADT_NAME, 4);
+ memcpy(header->signature, "APIC", 4);
memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, MADT_TABLE, 8);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_madt_t);
header->checksum = acpi_checksum((void *)madt, header->length);
}
+void acpi_create_mcfg(acpi_mcfg_t *mcfg)
+{
+
+ acpi_header_t *header=&(mcfg->header);
+ unsigned long current=(unsigned long)mcfg+sizeof(acpi_mcfg_t);
+
+ memset((void *)mcfg, 0, sizeof(acpi_mcfg_t));
+
+ /* fill out header fields */
+ memcpy(header->signature, "MCFG", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(acpi_mcfg_t);
+ header->revision = 1;
+
+ current = acpi_fill_mcfg(current);
+
+ /* recalculate length */
+ header->length= current - (unsigned long)mcfg;
+
+ header->checksum = acpi_checksum((void *)mcfg, header->length);
+}
+
+/* this can be overriden by platform ACPI setup code,
+ * if it calls acpi_create_ssdt_generator
+ */
+unsigned long __attribute__((weak)) acpi_fill_ssdt_generator(unsigned long current,
+ const char *oem_table_id) {
+ return current;
+}
+
+void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
+{
+ unsigned long current=(unsigned long)ssdt+sizeof(acpi_header_t);
+ memset((void *)ssdt, 0, sizeof(acpi_header_t));
+ memcpy(&ssdt->signature, "SSDT", 4);
+ ssdt->revision = 2;
+ memcpy(&ssdt->oem_id, OEM_ID, 6);
+ memcpy(&ssdt->oem_table_id, oem_table_id, 8);
+ ssdt->oem_revision = 42;
+ memcpy(&ssdt->asl_compiler_id, "CORE", 4);
+ ssdt->asl_compiler_revision = 42;
+ ssdt->length = sizeof(acpi_header_t);
+
+ acpigen_set_current((char *) current);
+ current = acpi_fill_ssdt_generator(current, oem_table_id);
+
+ /* recalculate length */
+ ssdt->length = current - (unsigned long)ssdt;
+ ssdt->checksum = acpi_checksum((void *)ssdt, ssdt->length);
+}
+
int acpi_create_srat_lapic(acpi_srat_lapic_t *lapic, u8 node, u8 apic)
{
+ memset((void *)lapic, 0, sizeof(acpi_srat_lapic_t));
lapic->type=0;
lapic->length=sizeof(acpi_srat_lapic_t);
lapic->flags=1;
memset((void *)srat, 0, sizeof(acpi_srat_t));
/* fill out header fields */
- memcpy(header->signature, SRAT_NAME, 4);
+ memcpy(header->signature, "SRAT", 4);
memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, SRAT_TABLE, 8);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_srat_t);
header->checksum = acpi_checksum((void *)srat, header->length);
}
+void acpi_create_slit(acpi_slit_t *slit)
+{
+
+ acpi_header_t *header=&(slit->header);
+ unsigned long current=(unsigned long)slit+sizeof(acpi_slit_t);
+
+ memset((void *)slit, 0, sizeof(acpi_slit_t));
+
+ /* fill out header fields */
+ memcpy(header->signature, "SLIT", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(acpi_slit_t);
+ header->revision = 1;
+
+ current = acpi_fill_slit(current);
+
+ /* recalculate length */
+ header->length= current - (unsigned long)slit;
+
+ header->checksum = acpi_checksum((void *)slit, header->length);
+}
+
void acpi_create_hpet(acpi_hpet_t *hpet)
{
#define HPET_ADDR 0xfed00000ULL
memset((void *)hpet, 0, sizeof(acpi_hpet_t));
/* fill out header fields */
- memcpy(header->signature, HPET_NAME, 4);
+ memcpy(header->signature, "HPET", 4);
memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, HPET_TABLE, 8);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_hpet_t);
header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
}
-
void acpi_create_facs(acpi_facs_t *facs)
{
+
memset( (void *)facs,0, sizeof(acpi_facs_t));
- memcpy(facs->signature,"FACS",4);
+ memcpy(facs->signature, "FACS", 4);
facs->length = sizeof(acpi_facs_t);
facs->hardware_signature = 0;
facs->firmware_waking_vector = 0;
acpi_header_t *header=&(rsdt->header);
/* fill out header fields */
- memcpy(header->signature, RSDT_NAME, 4);
+ memcpy(header->signature, "RSDT", 4);
memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, RSDT_TABLE, 8);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
memcpy(header->asl_compiler_id, ASLC, 4);
header->length = sizeof(acpi_rsdt_t);
/* fix checksum */
- header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
+ header->checksum = acpi_checksum((void *)rsdt, sizeof(acpi_rsdt_t));
}
-void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt)
+void acpi_write_xsdt(acpi_xsdt_t *xsdt)
+{
+ acpi_header_t *header=&(xsdt->header);
+
+ /* fill out header fields */
+ memcpy(header->signature, "XSDT", 4);
+ memcpy(header->oem_id, OEM_ID, 6);
+ memcpy(header->oem_table_id, ACPI_TABLE_CREATOR, 8);
+ memcpy(header->asl_compiler_id, ASLC, 4);
+
+ header->length = sizeof(acpi_xsdt_t);
+ header->revision = 1;
+
+ /* fill out entries */
+
+ // entries are filled in later, we come with an empty set.
+
+ /* fix checksum */
+
+ header->checksum = acpi_checksum((void *)xsdt, sizeof(acpi_xsdt_t));
+}
+
+void acpi_write_rsdp(acpi_rsdp_t *rsdp, acpi_rsdt_t *rsdt, acpi_xsdt_t *xsdt)
{
+ memset(rsdp, 0, sizeof(acpi_rsdp_t));
memcpy(rsdp->signature, RSDP_SIG, 8);
memcpy(rsdp->oem_id, OEM_ID, 6);
-
rsdp->length = sizeof(acpi_rsdp_t);
rsdp->rsdt_address = (u32)rsdt;
+ /* Some OSes expect an XSDT to be present for RSD PTR
+ * revisions >= 2. If we don't have an ACPI XSDT, force
+ * ACPI 1.0 (and thus RSD PTR revision 0)
+ */
+ if (xsdt == NULL) {
+ rsdp->revision = 0;
+ } else {
+ rsdp->xsdt_address = (u64)(u32)xsdt;
+ rsdp->revision = 2;
+ }
rsdp->checksum = acpi_checksum((void *)rsdp, 20);
rsdp->ext_checksum = acpi_checksum((void *)rsdp, sizeof(acpi_rsdp_t));
}
+#if CONFIG_HAVE_ACPI_RESUME == 1
+void suspend_resume(void)
+{
+ void *wake_vec;
+
+#if 0
+#if CONFIG_MEM_TRAIN_SEQ != 0
+ #error "So far it works on AMD and CONFIG_MEM_TRAIN_SEQ == 0"
+#endif
+
+#if CONFIG_RAMBASE < 0x1F00000
+ #error "For ACPI RESUME you need to have CONFIG_RAMBASE at least 31MB"
+ #error "Chipset support (S3_NVRAM_EARLY and ACPI_IS_WAKEUP_EARLY functions and memory ctrl)"
+ #error "And coreboot memory reserved in mainboard.c"
+#endif
+#endif
+ /* if we happen to be resuming find wakeup vector and jump to OS */
+ wake_vec = acpi_find_wakeup_vector();
+ if (wake_vec)
+ acpi_jump_to_wakeup(wake_vec);
+}
+
+/* this is to be filled by SB code - startup value what was found */
+u8 acpi_slp_type = 0;
+
+int acpi_is_wakeup(void)
+{
+ return (acpi_slp_type == 3);
+}
+
+static acpi_rsdp_t *valid_rsdp(acpi_rsdp_t *rsdp)
+{
+ if (strncmp((char *)rsdp, RSDP_SIG, sizeof(RSDP_SIG) - 1) != 0)
+ return NULL;
+
+ printk_debug("Looking on %p for valid checksum\n", rsdp);
+
+ if (acpi_checksum((void *)rsdp, 20) != 0)
+ return NULL;
+ printk_debug("Checksum 1 passed\n");
+
+ if ((rsdp->revision > 1) && (acpi_checksum((void *)rsdp,
+ rsdp->length) != 0))
+ return NULL;
+
+ printk_debug("Checksum 2 passed all OK\n");
+
+ return rsdp;
+}
+
+static acpi_rsdp_t *rsdp;
+void *acpi_get_wakeup_rsdp(void)
+{
+ return rsdp;
+}
+
+void *acpi_find_wakeup_vector(void)
+{
+ char *p, *end;
+
+ acpi_rsdt_t *rsdt;
+ acpi_facs_t *facs;
+ acpi_fadt_t *fadt;
+ void *wake_vec;
+ int i;
+
+ rsdp = NULL;
+
+ if (!acpi_is_wakeup())
+ return NULL;
+
+ printk_debug("Trying to find the wakeup vector ...\n");
+
+ /* find RSDP */
+ for (p = (char *) 0xe0000; p < (char *) 0xfffff; p+=16) {
+ if ((rsdp = valid_rsdp((acpi_rsdp_t *) p)))
+ break;
+ }
+
+ if (rsdp == NULL)
+ return NULL;
+
+ printk_debug("RSDP found at %p\n", rsdp);
+ rsdt = (acpi_rsdt_t *) rsdp->rsdt_address;
+
+ end = (char *) rsdt + rsdt->header.length;
+ printk_debug("RSDT found at %p ends at %p\n", rsdt, end);
+
+ for (i = 0; ((char *) &rsdt->entry[i]) < end; i++) {
+ fadt = (acpi_fadt_t *) rsdt->entry[i];
+ if (strncmp((char *)fadt, "FACP", 4) == 0)
+ break;
+ fadt = NULL;
+ }
+
+ if (fadt == NULL)
+ return NULL;
+
+ printk_debug("FADT found at %p\n", fadt);
+ facs = (acpi_facs_t *)fadt->firmware_ctrl;
+
+ if (facs == NULL) {
+ printk_debug("No FACS found, wake up from S3 not possible.\n");
+ return NULL;
+ }
+
+ printk_debug("FACS found at %p\n", facs);
+ wake_vec = (void *) facs->firmware_waking_vector;
+ printk_debug("OS waking vector is %p\n", wake_vec);
+ return wake_vec;
+}
+
+extern char *lowmem_backup;
+extern char *lowmem_backup_ptr;
+extern int lowmem_backup_size;
+
+#define WAKEUP_BASE 0x600
+
+void (*acpi_do_wakeup)(u32 vector, u32 backup_source, u32 backup_target, u32
+ backup_size) __attribute__((regparm(0))) = (void *)WAKEUP_BASE;
+
+extern unsigned char __wakeup, __wakeup_size;
+
+void acpi_jump_to_wakeup(void *vector)
+{
+ u32 acpi_backup_memory = (u32) cbmem_find(CBMEM_ID_RESUME);
+
+ if (!acpi_backup_memory) {
+ printk(BIOS_WARNING, "ACPI: Backup memory missing. No S3 Resume.\n");
+ return;
+ }
+
+ // FIXME this should go into the ACPI backup memory, too. No pork saussages.
+ /* just restore the SMP trampoline and continue with wakeup on assembly level */
+ memcpy(lowmem_backup_ptr, lowmem_backup, lowmem_backup_size);
+
+ /* copy wakeup trampoline in place */
+ memcpy(WAKEUP_BASE, &__wakeup, &__wakeup_size);
+
+ acpi_do_wakeup((u32)vector, acpi_backup_memory, CONFIG_RAMBASE, HIGH_MEMORY_SAVE);
+}
+#endif
projects / coreboot.git / blobdiff