linux-kernel - [PATCH v3 1/2] firmware: dmi: Add macro SMBIOS_ENTRY_POINT_SCAN

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Message-Id: <1580875204-18052-1-git-send-email-yangtiezhu@loongson.cn>
Date:   Wed,  5 Feb 2020 12:00:03 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Paul Burton <paulburton@...nel.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Jean Delvare <jdelvare@...e.com>,
        Jean Delvare <jdelvare@...e.de>
Cc:     Yinglu Yang <yangyinglu@...ngson.cn>,
        Jiaxun Yang <jiaxun.yang@...goat.com>,
        Huacai Chen <chenhc@...ote.com>,
        Xuefeng Li <lixuefeng@...ngson.cn>, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v3 1/2] firmware: dmi: Add macro SMBIOS_ENTRY_POINT_SCAN_START

Use SMBIOS_ENTRY_POINT_SCAN_START instead of 0xF0000, because other
archtecture maybe use a special start address such as 0xFFFE000 for
Loongson platform.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
Reviewed-by: Jean Delvare <jdelvare@...e.de>
---

v3:
  - split the v2 patch into two patches
  - make MIPS DMI config depend on MACH_LOONGSON64

v2:
  - add SMBIOS_ENTRY_POINT_SCAN_START suggested by Jean
  - refine definitions and Kconfig by Jiaxun

 drivers/firmware/dmi_scan.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/dmi_scan.c b/drivers/firmware/dmi_scan.c
index 2045566..f59163c 100644
--- a/drivers/firmware/dmi_scan.c
+++ b/drivers/firmware/dmi_scan.c
@@ -11,6 +11,10 @@
 #include <asm/dmi.h>
 #include <asm/unaligned.h>
 
+#ifndef SMBIOS_ENTRY_POINT_SCAN_START
+#define SMBIOS_ENTRY_POINT_SCAN_START 0xF0000
+#endif
+
 struct kobject *dmi_kobj;
 EXPORT_SYMBOL_GPL(dmi_kobj);
 
@@ -663,7 +667,7 @@ static void __init dmi_scan_machine(void)
 			return;
 		}
 	} else if (IS_ENABLED(CONFIG_DMI_SCAN_MACHINE_NON_EFI_FALLBACK)) {
-		p = dmi_early_remap(0xF0000, 0x10000);
+		p = dmi_early_remap(SMBIOS_ENTRY_POINT_SCAN_START, 0x10000);
 		if (p == NULL)
 			goto error;
 
-- 
1.8.3.1