[PATCH v2 06/30] x86: acpi: Store the ACPI context in global_data

[Simon Glass]

At present we create the ACPI context but then drop it after generation of
tables is complete. This is annoying because we have to then search for
tables later.

To fix this, allocate the context and store it in global_data.

Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

(no changes since v1)

 arch/x86/lib/acpi_table.c         | 7 ++++++-
 include/asm-generic/global_data.h | 5 +++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/arch/x86/lib/acpi_table.c b/arch/x86/lib/acpi_table.c
index 6d405b09fde..f0f342d8935 100644
--- a/arch/x86/lib/acpi_table.c
+++ b/arch/x86/lib/acpi_table.c
@@ -494,7 +494,7 @@ void acpi_create_ssdt(struct acpi_ctx *ctx, struct acpi_table_header *ssdt,
  */
 ulong write_acpi_tables(ulong start_addr)
 {
-	struct acpi_ctx sctx, *ctx = &sctx;
+	struct acpi_ctx *ctx;
 	struct acpi_facs *facs;
 	struct acpi_table_header *dsdt;
 	struct acpi_fadt *fadt;
@@ -509,6 +509,11 @@ ulong write_acpi_tables(ulong start_addr)
 	int ret;
 	int i;
 
+	ctx = calloc(1, sizeof(*ctx));
+	if (!ctx)
+		return log_msg_ret("mem", -ENOMEM);
+	gd->acpi_ctx = ctx;
+
 	start = map_sysmem(start_addr, 0);
 
 	debug("ACPI: Writing ACPI tables at %lx\n", start_addr);
diff --git a/include/asm-generic/global_data.h b/include/asm-generic/global_data.h
index d4a4e2215dc..c10033a8692 100644
--- a/include/asm-generic/global_data.h
+++ b/include/asm-generic/global_data.h
@@ -24,6 +24,8 @@
 #include <membuff.h>
 #include <linux/list.h>
 
+struct acpi_ctx;
+
 typedef struct global_data {
 	struct bd_info *bd;
 	unsigned long flags;
@@ -137,6 +139,9 @@ typedef struct global_data {
 #if CONFIG_IS_ENABLED(WDT)
 	struct udevice *watchdog_dev;
 #endif
+#ifdef CONFIG_GENERATE_ACPI_TABLE
+	struct acpi_ctx *acpi_ctx;
+#endif
 } gd_t;
 #endif
 
-- 
2.29.0.rc1.297.gfa9743e501-goog