diff options
| author | Björn Töpel <bjorn@rivosinc.com> | 2023-10-12 13:28:52 +0300 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2023-11-01 16:31:16 +0300 |
| commit | f2de37a572853d340f945a7748f74e3ed8c6b743 (patch) | |
| tree | 74dbab1dc67486573fd42f9fb6d60cab5b6c66d0 /drivers/firmware | |
| parent | 0d82410252ea324f0064e75b9865bb74cccc1dda (diff) | |
| download | linux-f2de37a572853d340f945a7748f74e3ed8c6b743.tar.xz | |
riscv, qemu_fw_cfg: Add support for RISC-V architecture
Qemu fw_cfg support was missing for RISC-V, which made it hard to do
proper vmcore dumps from qemu.
Add the missing RISC-V arch-defines.
You can now do vmcore dumps from qemu. Add "-device vmcoreinfo" to the
qemu command-line. From the qemu monitor:
(qemu) dump-guest-memory vmcore
The vmcore can now be used, e.g., with the "crash" utility.
Acked-by: "Michael S. Tsirkin" <mst@redhat.com>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Tested-by: Clément Léger <cleger@rivosinc.com>
Signed-off-by: Björn Töpel <bjorn@rivosinc.com>
Message-Id: <20231012102852.234442-1-bjorn@kernel.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'drivers/firmware')
| -rw-r--r-- | drivers/firmware/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/firmware/qemu_fw_cfg.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig index b59e3041fd62..f05ff56629b3 100644 --- a/drivers/firmware/Kconfig +++ b/drivers/firmware/Kconfig @@ -155,7 +155,7 @@ config RASPBERRYPI_FIRMWARE config FW_CFG_SYSFS tristate "QEMU fw_cfg device support in sysfs" - depends on SYSFS && (ARM || ARM64 || PARISC || PPC_PMAC || SPARC || X86) + depends on SYSFS && (ARM || ARM64 || 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 a69399a6b7c0..1448f61173b3 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)) +# if (defined(CONFIG_ARM) || defined(CONFIG_ARM64) || defined(CONFIG_RISCV)) # define FW_CFG_CTRL_OFF 0x08 # define FW_CFG_DATA_OFF 0x00 # define FW_CFG_DMA_OFF 0x10 |