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hw/arm/allwinner: add RTC device support

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Allwinner System-on-Chips usually contain a Real Time Clock (RTC)
for non-volatile system date and time keeping. This commit adds a generic
Allwinner RTC device that supports the RTC devices found in Allwinner SoC
family sun4i (A10), sun7i (A20) and sun6i and newer (A31, H2+, H3, etc).
The following RTC functionality and features are implemented:

 * Year-Month-Day read/write
 * Hour-Minute-Second read/write
 * General Purpose storage

The following boards are extended with the RTC device:

 * Cubieboard (hw/arm/cubieboard.c)
 * Orange Pi PC (hw/arm/orangepi.c)

Signed-off-by: Niek Linnenbank <nieklinnenbank@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20200311221854.30370-13-nieklinnenbank@gmail.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Niek Linnenbank 2020-03-11 23:18:48 +01:00 • committed by Peter Maydell
parent b71d0385e9
commit a9ad9e73a7
8 changed files with 571 additions and 1 deletions
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3
include/hw/arm/allwinner-h3.h
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@ -46,6 +46,7 @@
#include "hw/misc/allwinner-sid.h"
#include "hw/sd/allwinner-sdhost.h"
#include "hw/net/allwinner-sun8i-emac.h"
#include "hw/rtc/allwinner-rtc.h"
#include "target/arm/cpu.h"
#include "sysemu/block-backend.h"
@ -88,6 +89,7 @@ enum {
AW_H3_GIC_CPU,
AW_H3_GIC_HYP,
AW_H3_GIC_VCPU,
AW_H3_RTC,
AW_H3_CPUCFG,
AW_H3_SDRAM
};
@ -129,6 +131,7 @@ typedef struct AwH3State {
AwSidState sid;
AwSdHostState mmc0;
AwSun8iEmacState emac;
AwRtcState rtc;
GICState gic;
MemoryRegion sram_a1;
MemoryRegion sram_a2;