MIPS: ath79: Add zboot debug serial support (b3f0a250) · Commits · 戴 / test

Reuse the early printk code to support the serial in zboot. We copy early_printk.c instead of referencing it because we need to build a different object file for the normal kernel and zboot. Signed-off-by:

Alban Bedel <albeu@free.fr> Cc: Andrew Bresticker <abrestic@chromium.org> Cc: Alex Smith <alex.smith@imgtec.com> Cc: Wu Zhangjin <wuzhangjin@gmail.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/12234/ Signed-off-by:

Ralf Baechle <ralf@linux-mips.org>

arch/mips/Kconfig

+1 −1

Original line number	Diff line number	Diff line
		@@ -137,7 +137,7 @@ config ATH79
		select SYS_SUPPORTS_32BIT_KERNEL
		select SYS_SUPPORTS_BIG_ENDIAN
		select SYS_SUPPORTS_MIPS16
		select SYS_SUPPORTS_ZBOOT
		select SYS_SUPPORTS_ZBOOT_UART_PROM
		select USE_OF
		help
		Support for the Atheros AR71XX/AR724X/AR913X SoCs.

arch/mips/boot/compressed/Makefile

+5 −0

Original line number	Diff line number	Diff line
		@@ -37,8 +37,13 @@ vmlinuzobjs-$(CONFIG_DEBUG_ZBOOT) += $(obj)/dbg.o
		vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART16550) += $(obj)/uart-16550.o
		vmlinuzobjs-$(CONFIG_SYS_SUPPORTS_ZBOOT_UART_PROM) += $(obj)/uart-prom.o
		vmlinuzobjs-$(CONFIG_MIPS_ALCHEMY) += $(obj)/uart-alchemy.o
		vmlinuzobjs-$(CONFIG_ATH79) += $(obj)/uart-ath79.o
		endif

		extra-y += uart-ath79.c
		$(obj)/uart-ath79.c: $(srctree)/arch/mips/ath79/early_printk.c
		$(call cmd,shipped)

		vmlinuzobjs-$(CONFIG_KERNEL_XZ) += $(obj)/ashldi3.o $(obj)/bswapsi.o

		extra-y += ashldi3.c bswapsi.c

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