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hw: wdt_aspeed: Add AST2600 support

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The AST2600 has four watchdogs, and they each have a 0x40 of registers.

When running as part of an ast2600 system we must check a different
offset for the system reset control register in the SCU.

Signed-off-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20190925143248.10000-12-clg@kaod.org
[clg: - reworked model integration into new object class ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Joel Stanley 2019-09-25 16:32:36 +02:00 committed by Peter Maydell
parent 6112bd6d9b
commit 6b2b2a703c
3 changed files with 31 additions and 1 deletions
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29
hw/watchdog/wdt_aspeed.c
View file

@ -40,12 +40,14 @@
#define WDT_DRIVE_TYPE_MASK (0xFF << 24)
#define WDT_PUSH_PULL_MAGIC (0xA8 << 24)
#define WDT_OPEN_DRAIN_MAGIC (0x8A << 24)
#define WDT_RESET_MASK1 (0x1c / 4)
#define WDT_TIMEOUT_STATUS (0x10 / 4)
#define WDT_TIMEOUT_CLEAR (0x14 / 4)
#define WDT_RESTART_MAGIC 0x4755
#define AST2600_SCU_RESET_CONTROL1 (0x40 / 4)
#define SCU_RESET_CONTROL1 (0x04 / 4)
#define SCU_RESET_SDRAM BIT(0)
@ -74,6 +76,8 @@ static uint64_t aspeed_wdt_read(void *opaque, hwaddr offset, unsigned size)
return s->regs[WDT_CTRL];
case WDT_RESET_WIDTH:
return s->regs[WDT_RESET_WIDTH];
case WDT_RESET_MASK1:
return s->regs[WDT_RESET_MASK1];
case WDT_TIMEOUT_STATUS:
case WDT_TIMEOUT_CLEAR:
qemu_log_mask(LOG_UNIMP,
@ -146,6 +150,11 @@ static void aspeed_wdt_write(void *opaque, hwaddr offset, uint64_t data,
s->regs[WDT_RESET_WIDTH] |= data & awc->ext_pulse_width_mask;
break;
case WDT_RESET_MASK1:
/* TODO: implement */
s->regs[WDT_RESET_MASK1] = data;
break;
case WDT_TIMEOUT_STATUS:
case WDT_TIMEOUT_CLEAR:
qemu_log_mask(LOG_UNIMP,
@ -316,12 +325,32 @@ static const TypeInfo aspeed_2500_wdt_info = {
.class_init = aspeed_2500_wdt_class_init,
};
static void aspeed_2600_wdt_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AspeedWDTClass *awc = ASPEED_WDT_CLASS(klass);
dc->desc = "ASPEED 2600 Watchdog Controller";
awc->offset = 0x40;
awc->ext_pulse_width_mask = 0xfffff; /* TODO */
awc->reset_ctrl_reg = AST2600_SCU_RESET_CONTROL1;
awc->reset_pulse = aspeed_2500_wdt_reset_pulse;
}
static const TypeInfo aspeed_2600_wdt_info = {
.name = TYPE_ASPEED_2600_WDT,
.parent = TYPE_ASPEED_WDT,
.instance_size = sizeof(AspeedWDTState),
.class_init = aspeed_2600_wdt_class_init,
};
static void wdt_aspeed_register_types(void)
{
watchdog_add_model(&model);
type_register_static(&aspeed_wdt_info);
type_register_static(&aspeed_2400_wdt_info);
type_register_static(&aspeed_2500_wdt_info);
type_register_static(&aspeed_2600_wdt_info);
}
type_init(wdt_aspeed_register_types)

2
include/hw/arm/aspeed_soc.h
View file

@ -27,7 +27,7 @@
#include "hw/sd/aspeed_sdhci.h"
#define ASPEED_SPIS_NUM 2
#define ASPEED_WDTS_NUM 3
#define ASPEED_WDTS_NUM 4
#define ASPEED_CPUS_NUM 2
#define ASPEED_MACS_NUM 2

1
include/hw/watchdog/wdt_aspeed.h
View file

@ -18,6 +18,7 @@
OBJECT_CHECK(AspeedWDTState, (obj), TYPE_ASPEED_WDT)
#define TYPE_ASPEED_2400_WDT TYPE_ASPEED_WDT "-ast2400"
#define TYPE_ASPEED_2500_WDT TYPE_ASPEED_WDT "-ast2500"
#define TYPE_ASPEED_2600_WDT TYPE_ASPEED_WDT "-ast2600"
#define ASPEED_WDT_REGS_MAX (0x20 / 4)