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MIPS: loongson: Add built-in DTB support

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Since the current bootloader for Loongson-1 does not support FDT,
introduce CONFIG_BUILTIN_DTB_NAME to enable a built-in DTB.

Signed-off-by: Keguang Zhang <keguang.zhang@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
This commit is contained in:
Keguang Zhang
2025-07-16 19:25:15 +08:00
committed by Thomas Bogendoerfer
parent 11741215e2
commit ec7c2a107a
2 changed files with 13 additions and 0 deletions
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5
arch/mips/boot/dts/loongson/Makefile
View File

@@ -1,4 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
ifneq ($(CONFIG_BUILTIN_DTB_NAME),)
dtb-y := $(addsuffix .dtb, $(CONFIG_BUILTIN_DTB_NAME))
else
dtb-$(CONFIG_MACH_LOONGSON64) += loongson64_2core_2k1000.dtb
dtb-$(CONFIG_MACH_LOONGSON64) += loongson64c_4core_ls7a.dtb
dtb-$(CONFIG_MACH_LOONGSON64) += loongson64c_4core_rs780e.dtb
@@ -10,3 +14,4 @@ dtb-$(CONFIG_MACH_LOONGSON32) += cq-t300b.dtb
dtb-$(CONFIG_MACH_LOONGSON32) += ls1b-demo.dtb
dtb-$(CONFIG_MACH_LOONGSON32) += lsgz_1b_dev.dtb
dtb-$(CONFIG_MACH_LOONGSON32) += smartloong-1c.dtb
endif

8
arch/mips/loongson32/Kconfig
View File

@@ -36,3 +36,11 @@ config LOONGSON1_LS1C
endchoice
endif # MACH_LOONGSON32
config BUILTIN_DTB_NAME
string "Source file for built-in DTB"
depends on BUILTIN_DTB
help
Base name (without suffix, relative to arch/mips/boot/dts/loongson)
for the DTS file that will be used to produce the DTB linked into
the kernel.