linux-kernel - [PATCH v4 3/4] RISC-V: pi: Add kernel/pi/pi.h

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Message-ID: <20240709173937.510084-4-jesse@rivosinc.com>
Date: Tue,  9 Jul 2024 13:39:36 -0400
From: Jesse Taube <jesse@...osinc.com>
To: linux-riscv@...ts.infradead.org
Cc: Ard Biesheuvel <ardb@...nel.org>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Jesse Taube <jesse@...osinc.com>,
	Alexandre Ghiti <alexghiti@...osinc.com>,
	Conor Dooley <conor.dooley@...rochip.com>,
	Masahiro Yamada <masahiroy@...nel.org>,
	Wende Tan <twd2.me@...il.com>,
	Christophe JAILLET <christophe.jaillet@...adoo.fr>,
	Sami Tolvanen <samitolvanen@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Baoquan He <bhe@...hat.com>,
	"Mike Rapoport (IBM)" <rppt@...nel.org>,
	"Vishal Moola (Oracle)" <vishal.moola@...il.com>,
	linux-kernel@...r.kernel.org,
	llvm@...ts.linux.dev,
	Charlie Jenkins <charlie@...osinc.com>
Subject: [PATCH v4 3/4] RISC-V: pi: Add kernel/pi/pi.h

Add pi.h header for declarations of the kernel/pi prefixed functions
and any other related declarations.

Suggested-by: Charlie Jenkins <charlie@...osinc.com>
Signed-off-by: Jesse Taube <jesse@...osinc.com>
Reviewed-by: Alexandre Ghiti <alexghiti@...osinc.com>
---
V1 -> V2:
 - New patch
V2 -> V3:
 - Spelling
V3 -> V4:
 - No changes
---
 arch/riscv/kernel/pi/cmdline_early.c | 10 ++--------
 arch/riscv/kernel/pi/fdt_early.c     |  7 +------
 arch/riscv/kernel/pi/pi.h            | 17 +++++++++++++++++
 3 files changed, 20 insertions(+), 14 deletions(-)
 create mode 100644 arch/riscv/kernel/pi/pi.h

diff --git a/arch/riscv/kernel/pi/cmdline_early.c b/arch/riscv/kernel/pi/cmdline_early.c
index f6d4dedffb84..fbcdc9e4e143 100644
--- a/arch/riscv/kernel/pi/cmdline_early.c
+++ b/arch/riscv/kernel/pi/cmdline_early.c
@@ -6,15 +6,9 @@
 #include <asm/pgtable.h>
 #include <asm/setup.h>
 
-static char early_cmdline[COMMAND_LINE_SIZE];
+#include "pi.h"
 
-/*
- * Declare the functions that are exported (but prefixed) here so that LLVM
- * does not complain it lacks the 'static' keyword (which, if added, makes
- * LLVM complain because the function is actually unused in this file).
- */
-u64 set_satp_mode_from_cmdline(uintptr_t dtb_pa);
-bool set_nokaslr_from_cmdline(uintptr_t dtb_pa);
+static char early_cmdline[COMMAND_LINE_SIZE];
 
 static char *get_early_cmdline(uintptr_t dtb_pa)
 {
diff --git a/arch/riscv/kernel/pi/fdt_early.c b/arch/riscv/kernel/pi/fdt_early.c
index 899610e042ab..40ee299702bf 100644
--- a/arch/riscv/kernel/pi/fdt_early.c
+++ b/arch/riscv/kernel/pi/fdt_early.c
@@ -3,12 +3,7 @@
 #include <linux/init.h>
 #include <linux/libfdt.h>
 
-/*
- * Declare the functions that are exported (but prefixed) here so that LLVM
- * does not complain it lacks the 'static' keyword (which, if added, makes
- * LLVM complain because the function is actually unused in this file).
- */
-u64 get_kaslr_seed(uintptr_t dtb_pa);
+#include "pi.h"
 
 u64 get_kaslr_seed(uintptr_t dtb_pa)
 {
diff --git a/arch/riscv/kernel/pi/pi.h b/arch/riscv/kernel/pi/pi.h
new file mode 100644
index 000000000000..493c8cb7c0e6
--- /dev/null
+++ b/arch/riscv/kernel/pi/pi.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _RISCV_PI_H_
+#define _RISCV_PI_H_
+
+#include <linux/types.h>
+
+/*
+ * The following functions are exported (but prefixed). Declare them here so
+ * that LLVM does not complain it lacks the 'static' keyword (which, if
+ * added, makes LLVM complain because the function is unused).
+ */
+
+u64 get_kaslr_seed(uintptr_t dtb_pa);
+bool set_nokaslr_from_cmdline(uintptr_t dtb_pa);
+u64 set_satp_mode_from_cmdline(uintptr_t dtb_pa);
+
+#endif /* _RISCV_PI_H_ */
-- 
2.45.2