From: Keguang Zhang Date: Wed, 16 Jul 2025 11:25:15 +0000 (+0800) Subject: MIPS: loongson: Add built-in DTB support X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=ec7c2a107a59a60079eff3308e791a3441231f2e;p=users%2Fhch%2Fmisc.git MIPS: loongson: Add built-in DTB support 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 Signed-off-by: Thomas Bogendoerfer --- diff --git a/arch/mips/boot/dts/loongson/Makefile b/arch/mips/boot/dts/loongson/Makefile index e8f76e7ac303..8ee12504d353 100644 --- a/arch/mips/boot/dts/loongson/Makefile +++ b/arch/mips/boot/dts/loongson/Makefile @@ -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 diff --git a/arch/mips/loongson32/Kconfig b/arch/mips/loongson32/Kconfig index a7c500959577..52e925309f15 100644 --- a/arch/mips/loongson32/Kconfig +++ b/arch/mips/loongson32/Kconfig @@ -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.