diff options
| author | Felipe Balbi <felipe.balbi@linux.intel.com> | 2017-04-01 16:21:33 +0300 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2017-04-10 10:02:03 +0800 |
| commit | bb416465fde8393bcbf1f64847b5e3cb021d5c81 (patch) | |
| tree | 51717bb0789c1652a89b5588e63cbecc9003e381 /arch/x86/include | |
| parent | c5f8dd482b4178cda30be7355085a70521cd4813 (diff) | |
| download | u-boot-bb416465fde8393bcbf1f64847b5e3cb021d5c81.tar.gz | |
x86: Add SCU IPC driver for Intel MID platforms
Intel MID platforms have few microcontrollers inside SoC, one of them
is so called System Controller Unit (SCU).
Here is the driver to communicate with microcontroller.
Signed-off-by: Vincent Tinelli <vincent.tinelli@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/cpu.h | 1 | ||||
| -rw-r--r-- | arch/x86/include/asm/scu.h | 28 |
2 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h index c651f2f594..0ee13b1eb1 100644 --- a/arch/x86/include/asm/cpu.h +++ b/arch/x86/include/asm/cpu.h @@ -54,6 +54,7 @@ enum { X86_NONE, X86_SYSCON_ME, /* Intel Management Engine */ X86_SYSCON_PINCONF, /* Intel x86 pin configuration */ + X86_SYSCON_SCU, /* System Controller Unit */ }; struct cpuid_result { diff --git a/arch/x86/include/asm/scu.h b/arch/x86/include/asm/scu.h new file mode 100644 index 0000000000..4d40e495bb --- /dev/null +++ b/arch/x86/include/asm/scu.h @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2017 Intel Corporation + * + * SPDX-License-Identifier: GPL-2.0+ + */ +#ifndef _X86_ASM_SCU_IPC_H_ +#define _X86_ASM_SCU_IPC_H_ + +/* IPC defines the following message types */ +#define IPCMSG_WARM_RESET 0xf0 +#define IPCMSG_COLD_RESET 0xf1 +#define IPCMSG_SOFT_RESET 0xf2 +#define IPCMSG_COLD_BOOT 0xf3 +#define IPCMSG_GET_FW_REVISION 0xf4 +#define IPCMSG_WATCHDOG_TIMER 0xf8 /* Set Kernel Watchdog Threshold */ + +struct ipc_ifwi_version { + u16 minor; + u8 major; + u8 hardware_id; + u32 reserved[3]; +}; + +/* Issue commands to the SCU with or without data */ +int scu_ipc_simple_command(u32 cmd, u32 sub); +int scu_ipc_command(u32 cmd, u32 sub, u32 *in, int inlen, u32 *out, int outlen); + +#endif /* _X86_ASM_SCU_IPC_H_ */ |