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hw: rtc: Add Goldfish RTC device

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This patch adds model for Google Goldfish virtual platform RTC device.

We will be adding Goldfish RTC device to the QEMU RISC-V virt machine
for providing real date-time to Guest Linux. The corresponding Linux
driver for Goldfish RTC device is already available in upstream Linux.

For now, VM migration support is available but untested for Goldfish RTC
device. It will be hardened in-future when we implement VM migration for
KVM RISC-V.

Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
This commit is contained in:
Anup Patel 2019-11-06 11:56:36 +00:00 • committed by Palmer Dabbelt
parent ae4a70c071
commit 9a5b40b842
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4
hw/rtc/trace-events
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@ -23,3 +23,7 @@ m48txx_nvram_io_read(uint64_t addr, uint64_t value) "io read addr:0x%04" PRIx64
m48txx_nvram_io_write(uint64_t addr, uint64_t value) "io write addr:0x%04" PRIx64 " value:0x%02" PRIx64
m48txx_nvram_mem_read(uint32_t addr, uint32_t value) "mem read addr:0x%04x value:0x%02x"
m48txx_nvram_mem_write(uint32_t addr, uint32_t value) "mem write addr:0x%04x value:0x%02x"
# goldfish_rtc.c
goldfish_rtc_read(uint64_t addr, uint64_t value) "addr 0x%02" PRIx64 " value 0x%08" PRIx64
goldfish_rtc_write(uint64_t addr, uint64_t value) "addr 0x%02" PRIx64 " value 0x%08" PRIx64