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bd2212d658
Per Appendix A.7 in Q/LS 0013-2014 (龙芯CPU开发系统固件与内核接口规范 V2.2,
lit. Loongson DevSys Firmware Kernel Interface Specification V2.2),
interface_info.size is size of this interface, not size of the LEFI BIOS
ROM.
In any case, the BIOS ROM Size just cannot be several kilobytes (KB) on
Loongson64 LEFI platforms.
Reported-by: Mingcong Bai <jeffbai@aosc.io>
Suggested-by: Icenowy Zheng <uwu@icenowy.me>
Fixes: 6c1bfbd9df ("MIPS: Loongson64: Add /sys/firmware/lefi/boardinfo")
Cc: stable@vger.kernel.org
Signed-off-by: Kexy Biscuit <kexybiscuit@aosc.io>
Acked-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/kobject.h>
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#include <boot_param.h>
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static ssize_t boardinfo_show(struct kobject *kobj,
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struct kobj_attribute *attr, char *buf)
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{
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char board_manufacturer[64] = {0};
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char *tmp_board_manufacturer = board_manufacturer;
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char bios_vendor[64] = {0};
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char *tmp_bios_vendor = bios_vendor;
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strcpy(board_manufacturer, eboard->name);
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strcpy(bios_vendor, einter->description);
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return sprintf(buf,
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"Board Info\n"
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"Manufacturer\t\t: %s\n"
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"Board Name\t\t: %s\n"
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"Family\t\t\t: LOONGSON3\n\n"
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"BIOS Info\n"
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"Vendor\t\t\t: %s\n"
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"Version\t\t\t: %s\n"
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"Release Date\t\t: %s\n",
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strsep(&tmp_board_manufacturer, "-"),
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eboard->name,
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strsep(&tmp_bios_vendor, "-"),
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einter->description,
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especial->special_name);
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}
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static struct kobj_attribute boardinfo_attr = __ATTR(boardinfo, 0444,
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boardinfo_show, NULL);
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static int __init boardinfo_init(void)
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{
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struct kobject *lefi_kobj;
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lefi_kobj = kobject_create_and_add("lefi", firmware_kobj);
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if (!lefi_kobj) {
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pr_err("lefi: Firmware registration failed.\n");
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return -ENOMEM;
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}
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return sysfs_create_file(lefi_kobj, &boardinfo_attr.attr);
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}
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late_initcall(boardinfo_init);
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