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imx: scu_api: add sc_pm_is_partition_started

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Add sc_pm_is_partition_started to check whether a partition
has been started. This will be used to detect M4 partition booted up or
not, then we could choose which dtb to use. If M4 is up, we need
use dtb, such as imx8qm-mek-rpmsg.dtb.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2019-08-26 08:12:16 +00:00 committed by Stefano Babic
parent 94e4d028b2
commit 8cacd788b4
3 changed files with 32 additions and 1 deletions
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5
arch/arm/include/asm/arch-imx8/sci/rpc.h
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@ -32,7 +32,9 @@
#define SC_RPC_SVC_PAD 6U
#define SC_RPC_SVC_MISC 7U
#define SC_RPC_SVC_IRQ 8U
#define SC_RPC_SVC_ABORT 9U
#define SC_RPC_SVC_SECO 9U
#define SC_RPC_SVC_ABORT 10U
/* Types */
@ -74,6 +76,7 @@ struct sc_rpc_msg_s {
#define PM_FUNC_REBOOT 9U
#define PM_FUNC_REBOOT_PARTITION 12U
#define PM_FUNC_CPU_START 11U
#define PM_FUNC_IS_PARTITION_STARTED 24U
/* MISC RPC */
#define MISC_FUNC_UNKNOWN 0

1
arch/arm/include/asm/arch-imx8/sci/sci.h
View File

@ -81,6 +81,7 @@ int sc_rm_get_memreg_info(sc_ipc_t ipc, sc_rm_mr_t mr, sc_faddr_t *addr_start,
sc_faddr_t *addr_end);
sc_bool_t sc_rm_is_resource_owned(sc_ipc_t ipc, sc_rsrc_t resource);
int sc_rm_set_master_sid(sc_ipc_t ipc, sc_rsrc_t resource, sc_rm_sid_t sid);
sc_bool_t sc_pm_is_partition_started(sc_ipc_t ipc, sc_rm_pt_t pt);
/* PAD API */
int sc_pad_set(sc_ipc_t ipc, sc_pad_t pad, u32 val);

27
drivers/misc/imx8/scu_api.c
View File

@ -119,6 +119,33 @@ int sc_pm_set_resource_power_mode(sc_ipc_t ipc, sc_rsrc_t resource,
return ret;
}
sc_bool_t sc_pm_is_partition_started(sc_ipc_t ipc, sc_rm_pt_t pt)
{
struct udevice *dev = gd->arch.scu_dev;
int size = sizeof(struct sc_rpc_msg_s);
struct sc_rpc_msg_s msg;
int ret;
u8 result;
RPC_VER(&msg) = SC_RPC_VERSION;
RPC_SVC(&msg) = (u8)(SC_RPC_SVC_PM);
RPC_FUNC(&msg) = (u8)(PM_FUNC_IS_PARTITION_STARTED);
RPC_U8(&msg, 0U) = (u8)(pt);
RPC_SIZE(&msg) = 2U;
ret = misc_call(dev, SC_FALSE, &msg, size, &msg, size);
result = RPC_R8(&msg);
if (result != 0 && result != 1) {
printf("%s: partition:%d res:%d\n",
__func__, pt, RPC_R8(&msg));
if (ret)
printf("%s: partition:%d res:%d\n", __func__, pt,
RPC_R8(&msg));
}
return !!result;
}
/* PAD */
int sc_pad_set(sc_ipc_t ipc, sc_pad_t pad, u32 val)
{