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aspeed/scu: Introduce per-SoC SCU types 

and use a class AspeedSCUClass to define each SoC characteristics.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-id: 20190904070506.1052-10-clg@kaod.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Cédric Le Goater 2019-09-04 09:05:05 +02:00 committed by Peter Maydell
parent ae275f7133
commit 9a937f6cc4
3 changed files with 64 additions and 37 deletions
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3
hw/arm/aspeed_soc.c
View File

@ -161,8 +161,9 @@ static void aspeed_soc_init(Object *obj)
&error_abort, NULL);
}
snprintf(typename, sizeof(typename), "aspeed.scu-%s", socname);
sysbus_init_child_obj(obj, "scu", OBJECT(&s->scu), sizeof(s->scu),
TYPE_ASPEED_SCU);
typename);
qdev_prop_set_uint32(DEVICE(&s->scu), "silicon-rev",
sc->info->silicon_rev);
object_property_add_alias(obj, "hw-strap1", OBJECT(&s->scu),

83
hw/misc/aspeed_scu.c
View File

@ -166,23 +166,10 @@ static uint32_t aspeed_scu_get_random(void)
static void aspeed_scu_set_apb_freq(AspeedSCUState *s)
{
uint32_t apb_divider;
switch (s->silicon_rev) {
case AST2400_A0_SILICON_REV:
case AST2400_A1_SILICON_REV:
apb_divider = 2;
break;
case AST2500_A0_SILICON_REV:
case AST2500_A1_SILICON_REV:
apb_divider = 4;
break;
default:
g_assert_not_reached();
}
AspeedSCUClass *asc = ASPEED_SCU_GET_CLASS(s);
s->apb_freq = s->hpll / (SCU_CLK_GET_PCLK_DIV(s->regs[CLK_SEL]) + 1)
/ apb_divider;
/ asc->apb_divider;
}
static uint64_t aspeed_scu_read(void *opaque, hwaddr offset, unsigned size)
@ -303,7 +290,7 @@ static const uint32_t hpll_ast2400_freqs[][4] = {
{ 400, 375, 350, 425 }, /* 25MHz */
};
static uint32_t aspeed_scu_calc_hpll_ast2400(AspeedSCUState *s)
static uint32_t aspeed_2400_scu_calc_hpll(AspeedSCUState *s)
{
uint32_t hpll_reg = s->regs[HPLL_PARAM];
uint8_t freq_select;
@ -334,7 +321,7 @@ static uint32_t aspeed_scu_calc_hpll_ast2400(AspeedSCUState *s)
return hpll_ast2400_freqs[clk_25m_in][freq_select] * 1000000;
}
static uint32_t aspeed_scu_calc_hpll_ast2500(AspeedSCUState *s)
static uint32_t aspeed_2500_scu_calc_hpll(AspeedSCUState *s)
{
uint32_t hpll_reg = s->regs[HPLL_PARAM];
uint32_t multiplier = 1;
@ -357,25 +344,9 @@ static uint32_t aspeed_scu_calc_hpll_ast2500(AspeedSCUState *s)
static void aspeed_scu_reset(DeviceState *dev)
{
AspeedSCUState *s = ASPEED_SCU(dev);
const uint32_t *reset;
uint32_t (*calc_hpll)(AspeedSCUState *s);
AspeedSCUClass *asc = ASPEED_SCU_GET_CLASS(dev);
switch (s->silicon_rev) {
case AST2400_A0_SILICON_REV:
case AST2400_A1_SILICON_REV:
reset = ast2400_a0_resets;
calc_hpll = aspeed_scu_calc_hpll_ast2400;
break;
case AST2500_A0_SILICON_REV:
case AST2500_A1_SILICON_REV:
reset = ast2500_a1_resets;
calc_hpll = aspeed_scu_calc_hpll_ast2500;
break;
default:
g_assert_not_reached();
}
memcpy(s->regs, reset, sizeof(s->regs));
memcpy(s->regs, asc->resets, sizeof(s->regs));
s->regs[SILICON_REV] = s->silicon_rev;
s->regs[HW_STRAP1] = s->hw_strap1;
s->regs[HW_STRAP2] = s->hw_strap2;
@ -385,7 +356,7 @@ static void aspeed_scu_reset(DeviceState *dev)
* All registers are set. Now compute the frequencies of the main clocks
*/
s->clkin = aspeed_scu_get_clkin(s);
s->hpll = calc_hpll(s);
s->hpll = asc->calc_hpll(s);
aspeed_scu_set_apb_freq(s);
}
@ -459,11 +430,51 @@ static const TypeInfo aspeed_scu_info = {
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(AspeedSCUState),
.class_init = aspeed_scu_class_init,
.class_size = sizeof(AspeedSCUClass),
.abstract = true,
};
static void aspeed_2400_scu_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AspeedSCUClass *asc = ASPEED_SCU_CLASS(klass);
dc->desc = "ASPEED 2400 System Control Unit";
asc->resets = ast2400_a0_resets;
asc->calc_hpll = aspeed_2400_scu_calc_hpll;
asc->apb_divider = 2;
}
static const TypeInfo aspeed_2400_scu_info = {
.name = TYPE_ASPEED_2400_SCU,
.parent = TYPE_ASPEED_SCU,
.instance_size = sizeof(AspeedSCUState),
.class_init = aspeed_2400_scu_class_init,
};
static void aspeed_2500_scu_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
AspeedSCUClass *asc = ASPEED_SCU_CLASS(klass);
dc->desc = "ASPEED 2500 System Control Unit";
asc->resets = ast2500_a1_resets;
asc->calc_hpll = aspeed_2500_scu_calc_hpll;
asc->apb_divider = 4;
}
static const TypeInfo aspeed_2500_scu_info = {
.name = TYPE_ASPEED_2500_SCU,
.parent = TYPE_ASPEED_SCU,
.instance_size = sizeof(AspeedSCUState),
.class_init = aspeed_2500_scu_class_init,
};
static void aspeed_scu_register_types(void)
{
type_register_static(&aspeed_scu_info);
type_register_static(&aspeed_2400_scu_info);
type_register_static(&aspeed_2500_scu_info);
}
type_init(aspeed_scu_register_types);

15
include/hw/misc/aspeed_scu.h
View File

@ -15,6 +15,8 @@
#define TYPE_ASPEED_SCU "aspeed.scu"
#define ASPEED_SCU(obj) OBJECT_CHECK(AspeedSCUState, (obj), TYPE_ASPEED_SCU)
#define TYPE_ASPEED_2400_SCU TYPE_ASPEED_SCU "-ast2400"
#define TYPE_ASPEED_2500_SCU TYPE_ASPEED_SCU "-ast2500"
#define ASPEED_SCU_NR_REGS (0x1A8 >> 2)
@ -45,6 +47,19 @@ typedef struct AspeedSCUState {
extern bool is_supported_silicon_rev(uint32_t silicon_rev);
#define ASPEED_SCU_CLASS(klass) \
OBJECT_CLASS_CHECK(AspeedSCUClass, (klass), TYPE_ASPEED_SCU)
#define ASPEED_SCU_GET_CLASS(obj) \
OBJECT_GET_CLASS(AspeedSCUClass, (obj), TYPE_ASPEED_SCU)
typedef struct AspeedSCUClass {
SysBusDeviceClass parent_class;
const uint32_t *resets;
uint32_t (*calc_hpll)(AspeedSCUState *s);
uint32_t apb_divider;
} AspeedSCUClass;
#define ASPEED_SCU_PROT_KEY 0x1688A8A8
/*