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fw_cfg: Add support for LoongArch architecture

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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 <chenhuacai@loongson.cn>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260529140559.1775511-1-chenhuacai@loongson.cn>
This commit is contained in:
Huacai Chen 2026-05-29 22:05:59 +08:00 committed by Michael S. Tsirkin
parent 0d21a1d637
commit 7222e8c856
2 changed files with 2 additions and 2 deletions
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2
drivers/firmware/Kconfig
View File

@ -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

2
drivers/firmware/qemu_fw_cfg.c
View File

@ -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