Implement ACPI in a per device way
This approach avoids having same basic tables 150-lines mantra over 100 times
in codebase.
Change-Id: I76fb2fbcb9ca0654f2e5fd5d90bd62392165777c
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/6801
Tested-by: build bot (Jenkins)
Reviewed-by: Edward O'Callaghan <eocallaghan@alterapraxis.com>
Reviewed-by: Aaron Durbin <adurbin@google.com>
diff --git a/src/arch/x86/boot/acpi.c b/src/arch/x86/boot/acpi.c
index d76882a..3bfa3bd 100644
--- a/src/arch/x86/boot/acpi.c
+++ b/src/arch/x86/boot/acpi.c
@@ -247,15 +247,17 @@
header->checksum = acpi_checksum((void *)mcfg, header->length);
}
+#if !IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES)
/*
* This can be overridden 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)
+ unsigned long current, const char *oem_table_id)
{
return current;
}
+#endif
void acpi_create_ssdt_generator(acpi_header_t *ssdt, const char *oem_table_id)
{
@@ -273,7 +275,17 @@
ssdt->length = sizeof(acpi_header_t);
acpigen_set_current((char *) current);
- current = acpi_fill_ssdt_generator(current, oem_table_id);
+ {
+#if IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES)
+ device_t dev;
+ for (dev = all_devices; dev; dev = dev->next)
+ if (dev->ops && dev->ops->acpi_fill_ssdt_generator) {
+ current = dev->ops->acpi_fill_ssdt_generator(current, oem_table_id);
+ }
+#else
+ current = acpi_fill_ssdt_generator(current, oem_table_id);
+#endif
+ }
/* (Re)calculate length and checksum. */
ssdt->length = current - (unsigned long)ssdt;
@@ -455,6 +467,24 @@
header->checksum = acpi_checksum((void *)hpet, sizeof(acpi_hpet_t));
}
+unsigned long acpi_write_hpet(unsigned long current, acpi_rsdp_t *rsdp)
+{
+ acpi_hpet_t *hpet;
+
+ /*
+ * We explicitly add these tables later on:
+ */
+ printk(BIOS_DEBUG, "ACPI: * HPET\n");
+
+ hpet = (acpi_hpet_t *) current;
+ current += sizeof(acpi_hpet_t);
+ current = ALIGN(current, 16);
+ acpi_create_hpet(hpet);
+ acpi_add_table(rsdp, hpet);
+
+ return current;
+}
+
void acpi_create_facs(acpi_facs_t *facs)
{
memset((void *)facs, 0, sizeof(acpi_facs_t));
@@ -620,6 +650,123 @@
header->checksum = acpi_checksum((void *)hest, header->length);
}
+#if IS_ENABLED(CONFIG_PER_DEVICE_ACPI_TABLES)
+
+extern const unsigned char AmlCode[];
+
+#define ALIGN_CURRENT current = (ALIGN(current, 16))
+unsigned long write_acpi_tables(unsigned long start)
+{
+ unsigned long current;
+ acpi_rsdp_t *rsdp;
+ acpi_rsdt_t *rsdt;
+ acpi_xsdt_t *xsdt;
+ acpi_fadt_t *fadt;
+ acpi_facs_t *facs;
+#if CONFIG_HAVE_ACPI_SLIC
+ acpi_header_t *slic;
+#endif
+ acpi_header_t *ssdt;
+ acpi_header_t *dsdt;
+ acpi_mcfg_t *mcfg;
+ acpi_madt_t *madt;
+ device_t dev;
+
+ current = start;
+
+ /* Align ACPI tables to 16byte */
+ ALIGN_CURRENT;
+
+ printk(BIOS_INFO, "ACPI: Writing ACPI tables at %lx.\n", start);
+
+ /* We need at least an RSDP and an RSDT Table */
+ rsdp = (acpi_rsdp_t *) current;
+ current += sizeof(acpi_rsdp_t);
+ ALIGN_CURRENT;
+ rsdt = (acpi_rsdt_t *) current;
+ current += sizeof(acpi_rsdt_t);
+ ALIGN_CURRENT;
+ xsdt = (acpi_xsdt_t *) current;
+ current += sizeof(acpi_xsdt_t);
+ ALIGN_CURRENT;
+
+ /* clear all table memory */
+ memset((void *) start, 0, current - start);
+
+ acpi_write_rsdp(rsdp, rsdt, xsdt);
+ acpi_write_rsdt(rsdt);
+ acpi_write_xsdt(xsdt);
+
+ printk(BIOS_DEBUG, "ACPI: * FACS\n");
+ facs = (acpi_facs_t *) current;
+ current += sizeof(acpi_facs_t);
+ ALIGN_CURRENT;
+ acpi_create_facs(facs);
+
+ printk(BIOS_DEBUG, "ACPI: * DSDT\n");
+ dsdt = (acpi_header_t *) current;
+ memcpy(dsdt, &AmlCode, sizeof(acpi_header_t));
+ current += dsdt->length;
+ memcpy(dsdt, &AmlCode, dsdt->length);
+
+ ALIGN_CURRENT;
+
+ printk(BIOS_DEBUG, "ACPI: * FADT\n");
+ fadt = (acpi_fadt_t *) current;
+ current += sizeof(acpi_fadt_t);
+ ALIGN_CURRENT;
+
+ acpi_create_fadt(fadt, facs, dsdt);
+ acpi_add_table(rsdp, fadt);
+
+#if CONFIG_HAVE_ACPI_SLIC
+ printk(BIOS_DEBUG, "ACPI: * SLIC\n");
+ slic = (acpi_header_t *)current;
+ current += acpi_create_slic(current);
+ ALIGN_CURRENT;
+ acpi_add_table(rsdp, slic);
+#endif
+
+ printk(BIOS_DEBUG, "ACPI: * SSDT\n");
+ ssdt = (acpi_header_t *)current;
+ acpi_create_ssdt_generator(ssdt, ACPI_TABLE_CREATOR);
+ current += ssdt->length;
+ acpi_add_table(rsdp, ssdt);
+ ALIGN_CURRENT;
+
+ printk(BIOS_DEBUG, "ACPI: * MCFG\n");
+ mcfg = (acpi_mcfg_t *) current;
+ acpi_create_mcfg(mcfg);
+ if (mcfg->header.length > sizeof(acpi_mcfg_t)) {
+ current += mcfg->header.length;
+ ALIGN_CURRENT;
+ acpi_add_table(rsdp, mcfg);
+ }
+
+ printk(BIOS_DEBUG, "ACPI: * MADT\n");
+
+ madt = (acpi_madt_t *) current;
+ acpi_create_madt(madt);
+ if (madt->header.length > sizeof(acpi_madt_t)) {
+ current+=madt->header.length;
+ acpi_add_table(rsdp,madt);
+ }
+ ALIGN_CURRENT;
+
+ printk(BIOS_DEBUG, "current = %lx\n", current);
+
+ for (dev = all_devices; dev; dev = dev->next) {
+ if (dev->ops && dev->ops->write_acpi_tables) {
+ current = dev->ops->write_acpi_tables(current, rsdp);
+ ALIGN_CURRENT;
+ }
+ }
+
+ printk(BIOS_INFO, "ACPI: done.\n");
+ return current;
+}
+#endif
+
#if CONFIG_HAVE_ACPI_RESUME
void acpi_resume(void *wake_vec)
{