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// SPDX-License-Identifier: Apache-2.0
/* Copyright 2018-2019 IBM Corp. */
#ifndef __ULTRAVISOR_H
#define __ULTRAVISOR_H
#include <ultravisor-api.h>
#include <processor.h>
#include <types.h>
/* Bit 15 of an address should be set for it to be used as a secure memory area
* for the secure virtual machines */
#define UV_SECURE_MEM_BIT (PPC_BIT(15))
#define MAX_COMPRESSED_UV_IMAGE_SIZE 0x40000 /* 256 Kilobytes */
#define UV_READ_SCOM 0xF114
#define UV_WRITE_SCOM 0xF118
#define UCALL_BUFSIZE 4
#define UV_ACCESS_BIT 0x1ULL << 48
/* Address at which the Ultravisor is loaded for BML and Mambo */
#define UV_LOAD_BASE 0xC0000000
#define UV_LOAD_MAX_SIZE 0x200000
#define UV_FDT_MAX_SIZE 0x100000
#define UV_HB_RESERVE_SIZE 0x4000000;
extern bool uv_present;
#define is_uv_present() uv_present
extern uint64_t uv_base_addr;
extern int start_uv(uint64_t entry, struct uv_opal *uv_opal);
extern bool uv_add_mem_range(__be64 start, __be64 end);
extern void uv_preload_image(void);
extern void uv_decompress_image(void);
extern void init_uv(void);
extern int start_ultravisor(void);
extern long ucall(unsigned long opcode, unsigned long *retbuf, ...);
int fdt_add_wrapping_key(void *fdt);
int wrapping_key_init(void);
static inline bool can_access_xscom(void)
{
return (is_msr_bit_set(MSR_S) || !is_uv_present());
}
static inline int uv_xscom_read(u64 partid, u64 pcb_addr, u64 *val)
{
long rc;
unsigned long retbuf[UCALL_BUFSIZE];
rc = ucall(UV_READ_SCOM, retbuf, partid, pcb_addr);
*val = retbuf[0];
return rc;
}
static inline int uv_xscom_write(u64 partid, u64 pcb_addr, u64 val)
{
unsigned long retbuf[UCALL_BUFSIZE];
return ucall(UV_WRITE_SCOM, retbuf, partid, pcb_addr, val);
}
#endif /* __ULTRAVISOR_H */
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