A device may want to write out ACPI tables to describe itself to Linux.
Add a method to permit this.
Reviewed-by: Wolfgang Wallner
Signed-off-by: Simon Glass
---
Changes in v5:
- Drop bisectability changes
Changes in v4:
- Separate out the log newline
Changes in v3: None
Changes in v2:
- Drop definition of ACPI_TABLE_CREATOR
- Make _acpi_write_dev_tables() static and switch argument order
- Generalise the ACPI function recursion with acpi_recurse_method()
arch/sandbox/dts/test.dts | 4 +++
arch/x86/lib/acpi_table.c | 9 -
drivers/core/acpi.c | 62
include/acpi/acpi_table.h | 10 ++
include/dm/acpi.h | 30
lib/acpi/acpi_table.c | 13 +--
test/dm/acpi.c| 74 +--
7 files changed, 187 insertions(+), 15 deletions(-)
diff --git a/arch/sandbox/dts/test.dts b/arch/sandbox/dts/test.dts
index 5fa951ad4b6..1204c14b079 100644
--- a/arch/sandbox/dts/test.dts
+++ b/arch/sandbox/dts/test.dts
@@ -210,6 +210,10 @@
compatible = "denx,u-boot-acpi-test";
};
+ acpi-test2 {
+ compatible = "denx,u-boot-acpi-test";
+ };
+
clocks {
clk_fixed: clk-fixed {
compatible = "fixed-clock";
diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index 4832364f3ca..98f97208339 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -60,15 +60,6 @@ static void acpi_write_rsdp(struct acpi_rsdp *rsdp, struct
acpi_rsdt *rsdt,
sizeof(struct acpi_rsdp));
}
-void acpi_fill_header(struct acpi_table_header *header, char *signature)
-{
- memcpy(header->signature, signature, 4);
- memcpy(header->oem_id, OEM_ID, 6);
- memcpy(header->oem_table_id, OEM_TABLE_ID, 8);
- header->oem_revision = U_BOOT_BUILD_DATE;
- memcpy(header->aslc_id, ASLC_ID, 4);
-}
-
static void acpi_write_rsdt(struct acpi_rsdt *rsdt)
{
struct acpi_table_header *header = &(rsdt->header);
diff --git a/drivers/core/acpi.c b/drivers/core/acpi.c
index 0e64c21bf5b..8a6570c3b95 100644
--- a/drivers/core/acpi.c
+++ b/drivers/core/acpi.c
@@ -11,8 +11,17 @@
#include
#include
#include
+#include
#include
+/* Type of method to call */
+enum method_t {
+ METHOD_WRITE_TABLES,
+};
+
+/* Prototype for all methods */
+typedef int (*acpi_method)(const struct udevice *dev, struct acpi_ctx *ctx);
+
int acpi_copy_name(char *out_name, const char *name)
{
strncpy(out_name, name, ACPI_NAME_MAX);
@@ -31,3 +40,56 @@ int acpi_get_name(const struct udevice *dev, char *out_name)
return -ENOSYS;
}
+
+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;
+ }
+ }
+
+ return NULL;
+}
+
+int acpi_recurse_method(struct acpi_ctx *ctx, struct udevice *parent,
+ enum method_t method)
+{
+ struct udevice *dev;
+ acpi_method func;
+ int ret;
+
+ func = acpi_get_method(parent, method);
+ if (func) {
+ log_debug("\n");
+ log_debug("- %s %p\n", parent->name, func);
+ ret = device_ofdata_to_platdata(parent);
+ if (ret)
+ return log_msg_ret("ofdata", ret);
+ ret = func(parent, ctx);
+ if (ret)
+ return log_msg_ret("func", ret);
+ }
+ device_foreach_child(dev, parent) {
+ ret = acpi_recurse_method(ctx, dev, method);
+ if (ret)
+ return log_msg_ret("recurse", ret);
+ }
+
+ return 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);
+ log_debug("Writing finished, err=%d\n", ret);
+
+ return ret;
+}
diff --git a/include/acpi/acpi_table.h b/include/acpi/acpi_table.h
index 194be9aa589..a2bd929c920 100644
--- a/include/acpi/acpi_table.h
+++ b/include/acpi/acpi_table.h
@@ -505,6 +505,16 @@ int acpi_get_table_revision(enum acpi_tables table);
*/
int acpi_create_dmar(struct acpi_dmar *dmar, enum dmar_flags flags);
+/**
+ * acpi_fill_header() - Set up a new table header
+ *
+ * This sets all fields except length, revision, checksum and aslc_revision
+ *
+ * @header: ACPI header to update
+ * @signature: Table signature to use (4 characters)
+ */
+void acpi_fill_header(struct acpi_table_header *header, char *signature);
+
#endif /* !__ACPI__*/
#include
diff --git a/include/dm/acpi.h b/include/dm/acpi.h
index 49257914ffd..69d69d7f423 100644
--- a/include/dm/acpi.h
+++ b/include/dm/acpi.h
@@ -24,6 +24,1
