[PATCH v2 05/10] vmlinux.lds.h: wrap built-in firmware support under FW_LOADER

From: Luis R. Rodriguez
Date: Thu Oct 21 2021 - 11:59:05 EST


From: Luis Chamberlain <mcgrof@xxxxxxxxxx>

The firmware loader built-in firmware is only available when FW_LOADER
is built-in, so tuck away the sections for built-in firmware under it.

This ensures no oddball user tries to uses these sections without
first enabling FW_LOADER=y.

Reviewed-by: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Luis Chamberlain <mcgrof@xxxxxxxxxx>
---
include/asm-generic/vmlinux.lds.h | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 8771c435f34b..62351669add4 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -476,13 +476,7 @@
__end_pci_fixups_suspend_late = .; \
} \
\
- /* Built-in firmware blobs */ \
- .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) { \
- __start_builtin_fw = .; \
- KEEP(*(.builtin_fw)) \
- __end_builtin_fw = .; \
- } \
- \
+ FW_LOADER_BUILT_IN_DATA \
TRACEDATA \
\
PRINTK_INDEX \
@@ -886,6 +880,18 @@
#define ORC_UNWIND_TABLE
#endif

+/* Built-in firmware blobs */
+#ifdef CONFIG_FW_LOADER
+#define FW_LOADER_BUILT_IN_DATA \
+ .builtin_fw : AT(ADDR(.builtin_fw) - LOAD_OFFSET) ALIGN(8) { \
+ __start_builtin_fw = .; \
+ KEEP(*(.builtin_fw)) \
+ __end_builtin_fw = .; \
+ }
+#else
+#define FW_LOADER_BUILT_IN_DATA
+#endif
+
#ifdef CONFIG_PM_TRACE
#define TRACEDATA \
. = ALIGN(4); \
--
2.30.2