From: Huacai Chen Date: Fri, 29 May 2026 14:05:59 +0000 (+0800) Subject: fw_cfg: Add support for LoongArch architecture X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7222e8c8567e2aa1a2f1b4d3e40158d64ce538b6;p=thirdparty%2Flinux.git fw_cfg: Add support for LoongArch architecture Qemu fw_cfg support was missing for LoongArch, which made some functions unusable in virtual machines. So add the missing LoongArch defines. Signed-off-by: Huacai Chen Signed-off-by: Michael S. Tsirkin Message-ID: <20260529140559.1775511-1-chenhuacai@loongson.cn> --- diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index bbd2155d84838..9ec7477163899 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -121,7 +121,7 @@ config RASPBERRYPI_FIRMWARE config FW_CFG_SYSFS tristate "QEMU fw_cfg device support in sysfs" - depends on SYSFS && (ARM || ARM64 || PARISC || PPC_PMAC || RISCV || SPARC || X86) + depends on SYSFS && (ARM || ARM64 || LOONGARCH || PARISC || PPC_PMAC || RISCV || SPARC || X86) depends on HAS_IOPORT_MAP default n help diff --git a/drivers/firmware/qemu_fw_cfg.c b/drivers/firmware/qemu_fw_cfg.c index 87a5421bc7d5e..0c51a9df589f5 100644 --- a/drivers/firmware/qemu_fw_cfg.c +++ b/drivers/firmware/qemu_fw_cfg.c @@ -211,7 +211,7 @@ static void fw_cfg_io_cleanup(void) /* arch-specific ctrl & data register offsets are not available in ACPI, DT */ #if !(defined(FW_CFG_CTRL_OFF) && defined(FW_CFG_DATA_OFF)) -# if (defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_RISCV)) +# if (defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_LOONGARCH) || defined(CONFIG_RISCV)) # define FW_CFG_CTRL_OFF 0x08 # define FW_CFG_DATA_OFF 0x00 # define FW_CFG_DMA_OFF 0x10