[people/ms/u-boot.git] / arch / x86 / include / asm / fw_cfg.h

/*
 * (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
 *
 * SPDX-License-Identifier:	GPL-2.0+
 */

#ifndef __FW_CFG__
#define __FW_CFG__

#define FW_CONTROL_PORT	0x510
#define FW_DATA_PORT		0x511
#define FW_DMA_PORT_LOW	0x514
#define FW_DMA_PORT_HIGH	0x518

#include <linux/list.h>

enum qemu_fwcfg_items {
	FW_CFG_SIGNATURE	= 0x00,
	FW_CFG_ID		= 0x01,
	FW_CFG_UUID		= 0x02,
	FW_CFG_RAM_SIZE		= 0x03,
	FW_CFG_NOGRAPHIC	= 0x04,
	FW_CFG_NB_CPUS		= 0x05,
	FW_CFG_MACHINE_ID	= 0x06,
	FW_CFG_KERNEL_ADDR	= 0x07,
	FW_CFG_KERNEL_SIZE	= 0x08,
	FW_CFG_KERNEL_CMDLINE   = 0x09,
	FW_CFG_INITRD_ADDR	= 0x0a,
	FW_CFG_INITRD_SIZE	= 0x0b,
	FW_CFG_BOOT_DEVICE	= 0x0c,
	FW_CFG_NUMA		= 0x0d,
	FW_CFG_BOOT_MENU	= 0x0e,
	FW_CFG_MAX_CPUS		= 0x0f,
	FW_CFG_KERNEL_ENTRY	= 0x10,
	FW_CFG_KERNEL_DATA	= 0x11,
	FW_CFG_INITRD_DATA	= 0x12,
	FW_CFG_CMDLINE_ADDR	= 0x13,
	FW_CFG_CMDLINE_SIZE	= 0x14,
	FW_CFG_CMDLINE_DATA	= 0x15,
	FW_CFG_SETUP_ADDR	= 0x16,
	FW_CFG_SETUP_SIZE	= 0x17,
	FW_CFG_SETUP_DATA	= 0x18,
	FW_CFG_FILE_DIR		= 0x19,
	FW_CFG_FILE_FIRST	= 0x20,
	FW_CFG_WRITE_CHANNEL	= 0x4000,
	FW_CFG_ARCH_LOCAL	= 0x8000,
	FW_CFG_INVALID		= 0xffff,
};

#define FW_CFG_FILE_SLOTS	0x10
#define FW_CFG_MAX_ENTRY	(FW_CFG_FILE_FIRST + FW_CFG_FILE_SLOTS)
#define FW_CFG_ENTRY_MASK	 ~(FW_CFG_WRITE_CHANNEL | FW_CFG_ARCH_LOCAL)

#define FW_CFG_MAX_FILE_PATH	56

#define QEMU_FW_CFG_SIGNATURE	(('Q' << 24) | ('E' << 16) | ('M' << 8) | 'U')

#define FW_CFG_DMA_ERROR	(1 << 0)
#define FW_CFG_DMA_READ	(1 << 1)
#define FW_CFG_DMA_SKIP	(1 << 2)
#define FW_CFG_DMA_SELECT	(1 << 3)

#define FW_CFG_DMA_ENABLED	(1 << 1)

struct fw_cfg_file {
	__be32 size;
	__be16 select;
	__be16 reserved;
	char name[FW_CFG_MAX_FILE_PATH];
};

struct fw_file {
	struct fw_cfg_file cfg; /* firmware file information */
	unsigned long addr;     /* firmware file in-memory address */
	struct list_head list;  /* list node to link to fw_list */
};

struct fw_cfg_dma_access {
	__be32 control;
	__be32 length;
	__be64 address;
};

/**
 * Initialize QEMU fw_cfg interface
 */
void qemu_fwcfg_init(void);

/**
 * Get system cpu number
 *
 * @return:   cpu number in system
 */
int qemu_fwcfg_online_cpus(void);

#endif
Commit	Line	Data
f60df20a MY	1	/*
	2	* (C) Copyright 2015 Miao Yan <yanmiaobest@gmail.com>
	3	*
	4	* SPDX-License-Identifier: GPL-2.0+
	5	*/
	6
	7	#ifndef __FW_CFG__
	8	#define __FW_CFG__
	9
	10	#define FW_CONTROL_PORT 0x510
	11	#define FW_DATA_PORT 0x511
	12	#define FW_DMA_PORT_LOW 0x514
	13	#define FW_DMA_PORT_HIGH 0x518
	14
25757220 MY	15	#include <linux/list.h>
25757220 MY	16
f60df20a MY	17	enum qemu_fwcfg_items {
	18	FW_CFG_SIGNATURE = 0x00,
	19	FW_CFG_ID = 0x01,
	20	FW_CFG_UUID = 0x02,
	21	FW_CFG_RAM_SIZE = 0x03,
	22	FW_CFG_NOGRAPHIC = 0x04,
	23	FW_CFG_NB_CPUS = 0x05,
	24	FW_CFG_MACHINE_ID = 0x06,
	25	FW_CFG_KERNEL_ADDR = 0x07,
	26	FW_CFG_KERNEL_SIZE = 0x08,
	27	FW_CFG_KERNEL_CMDLINE = 0x09,
	28	FW_CFG_INITRD_ADDR = 0x0a,
	29	FW_CFG_INITRD_SIZE = 0x0b,
	30	FW_CFG_BOOT_DEVICE = 0x0c,
	31	FW_CFG_NUMA = 0x0d,
	32	FW_CFG_BOOT_MENU = 0x0e,
	33	FW_CFG_MAX_CPUS = 0x0f,
	34	FW_CFG_KERNEL_ENTRY = 0x10,
	35	FW_CFG_KERNEL_DATA = 0x11,
	36	FW_CFG_INITRD_DATA = 0x12,
	37	FW_CFG_CMDLINE_ADDR = 0x13,
	38	FW_CFG_CMDLINE_SIZE = 0x14,
	39	FW_CFG_CMDLINE_DATA = 0x15,
	40	FW_CFG_SETUP_ADDR = 0x16,
	41	FW_CFG_SETUP_SIZE = 0x17,
	42	FW_CFG_SETUP_DATA = 0x18,
	43	FW_CFG_FILE_DIR = 0x19,
	44	FW_CFG_FILE_FIRST = 0x20,
	45	FW_CFG_WRITE_CHANNEL = 0x4000,
	46	FW_CFG_ARCH_LOCAL = 0x8000,
	47	FW_CFG_INVALID = 0xffff,
	48	};
	49
	50	#define FW_CFG_FILE_SLOTS 0x10
	51	#define FW_CFG_MAX_ENTRY (FW_CFG_FILE_FIRST + FW_CFG_FILE_SLOTS)
	52	#define FW_CFG_ENTRY_MASK ~(FW_CFG_WRITE_CHANNEL \| FW_CFG_ARCH_LOCAL)
	53
	54	#define FW_CFG_MAX_FILE_PATH 56
	55
	56	#define QEMU_FW_CFG_SIGNATURE (('Q' << 24) \| ('E' << 16) \| ('M' << 8) \| 'U')
	57
	58	#define FW_CFG_DMA_ERROR (1 << 0)
	59	#define FW_CFG_DMA_READ (1 << 1)
	60	#define FW_CFG_DMA_SKIP (1 << 2)
	61	#define FW_CFG_DMA_SELECT (1 << 3)
	62
	63	#define FW_CFG_DMA_ENABLED (1 << 1)
	64
	65	struct fw_cfg_file {
	66	__be32 size;
	67	__be16 select;
	68	__be16 reserved;
	69	char name[FW_CFG_MAX_FILE_PATH];
	70	};
	71
25757220 MY	72	struct fw_file {
	73	struct fw_cfg_file cfg; /* firmware file information */
	74	unsigned long addr; /* firmware file in-memory address */
	75	struct list_head list; /* list node to link to fw_list */
f60df20a MY	76	};
	77
	78	struct fw_cfg_dma_access {
	79	__be32 control;
	80	__be32 length;
	81	__be64 address;
	82	};
	83
	84	/**
	85	* Initialize QEMU fw_cfg interface
	86	*/
	87	void qemu_fwcfg_init(void);
	88
	89	/**
	90	* Get system cpu number
	91	*
	92	* @return: cpu number in system
	93	*/
	94	int qemu_fwcfg_online_cpus(void);
	95
	96	#endif