linux-kernel - [PATCH 4/4] MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED

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Message-Id: <20180925180825.24659-5-yasha.che3@gmail.com>
Date:   Tue, 25 Sep 2018 21:08:25 +0300
From:   Yasha Cherikovsky <yasha.che3@...il.com>
To:     Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paul.burton@...s.com>,
        James Hogan <jhogan@...nel.org>, linux-mips@...ux-mips.org
Cc:     Yasha Cherikovsky <yasha.che3@...il.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] MIPS: Octeon: Remove special handling of CONFIG_MIPS_ELF_APPENDED_DTB=y

The ELF appended dtb can be accessed now via 'fw_passed_dtb'.

Since raw appended dtb is accessed via that variable too,
this now effectively allows to boot with CONFIG_MIPS_RAW_APPENDED_DTB=y
on Octeon.

Signed-off-by: Yasha Cherikovsky <yasha.che3@...il.com>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: Paul Burton <paul.burton@...s.com>
Cc: James Hogan <jhogan@...nel.org>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
---
 arch/mips/cavium-octeon/setup.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/arch/mips/cavium-octeon/setup.c b/arch/mips/cavium-octeon/setup.c
index a8034d0dcade..3c26054ce72b 100644
--- a/arch/mips/cavium-octeon/setup.c
+++ b/arch/mips/cavium-octeon/setup.c
@@ -1156,7 +1156,6 @@ void __init prom_free_prom_memory(void)
 void __init octeon_fill_mac_addresses(void);
 int octeon_prune_device_tree(void);
 
-extern const char __appended_dtb;
 extern const char __dtb_octeon_3xxx_begin;
 extern const char __dtb_octeon_68xx_begin;
 void __init device_tree_init(void)
@@ -1165,15 +1164,12 @@ void __init device_tree_init(void)
 	bool do_prune;
 	bool fill_mac;
 
-#ifdef CONFIG_MIPS_ELF_APPENDED_DTB
-	if (!fdt_check_header(&__appended_dtb)) {
-		fdt = &__appended_dtb;
+	if (fw_passed_dtb) {
+		fdt = (void *)fw_passed_dtb;
 		do_prune = false;
 		fill_mac = true;
 		pr_info("Using appended Device Tree.\n");
-	} else
-#endif
-	if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) {
+	} else if (octeon_bootinfo->minor_version >= 3 && octeon_bootinfo->fdt_addr) {
 		fdt = phys_to_virt(octeon_bootinfo->fdt_addr);
 		if (fdt_check_header(fdt))
 			panic("Corrupt Device Tree passed to kernel.");
-- 
2.19.0