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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2000, 2001, 2002 Broadcom Corporation
*/
/*
*
* Broadcom Common Firmware Environment (CFE)
*
* This module contains device function stubs (small routines to
* call the standard "iocb" interface entry point to CFE).
* There should be one routine here per iocb function call.
*
* Authors: Mitch Lichtenberg, Chris Demetriou
*/
#include <asm/fw/cfe/cfe_api.h>
#include "cfe_api_int.h"
/* Cast from a native pointer to a cfe_xptr_t and back. */
#define XPTR_FROM_NATIVE(n) ((cfe_xptr_t) (intptr_t) (n))
#define NATIVE_FROM_XPTR(x) ((void *) (intptr_t) (x))
int cfe_iocb_dispatch(struct cfe_xiocb *xiocb);
/*
* Declare the dispatch function with args of "intptr_t".
* This makes sure whatever model we're compiling in
* puts the pointers in a single register. For example,
* combining -mlong64 and -mips1 or -mips2 would lead to
* trouble, since the handle and IOCB pointer will be
* passed in two registers each, and CFE expects one.
*/
static int (*cfe_dispfunc) (intptr_t handle, intptr_t xiocb);
static u64 cfe_handle;
int cfe_init(u64 handle, u64 ept)
{
cfe_dispfunc = NATIVE_FROM_XPTR(ept);
cfe_handle = handle;
return 0;
}
int cfe_iocb_dispatch(struct cfe_xiocb * xiocb)
{
if (!cfe_dispfunc)
return -1;
return (*cfe_dispfunc) ((intptr_t) cfe_handle, (intptr_t) xiocb);
}
int cfe_close(int handle)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_CLOSE;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = handle;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = 0;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_cpu_start(int cpu, void (*fn) (void), long sp, long gp, long a1)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_START;
xiocb.plist.xiocb_cpuctl.gp_val = gp;
xiocb.plist.xiocb_cpuctl.sp_val = sp;
xiocb.plist.xiocb_cpuctl.a1_val = a1;
xiocb.plist.xiocb_cpuctl.start_addr = (long) fn;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_cpu_stop(int cpu)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_cpuctl);
xiocb.plist.xiocb_cpuctl.cpu_number = cpu;
xiocb.plist.xiocb_cpuctl.cpu_command = CFE_CPU_CMD_STOP;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_enumenv(int idx, char *name, int namelen, char *val, int vallen)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
xiocb.plist.xiocb_envbuf.enum_idx = idx;
xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
xiocb.plist.xiocb_envbuf.name_length = namelen;
xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
xiocb.plist.xiocb_envbuf.val_length = vallen;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int
cfe_enummem(int idx, int flags, u64 *start, u64 *length, u64 *type)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = flags;
xiocb.xiocb_psize = sizeof(struct xiocb_meminfo);
xiocb.plist.xiocb_meminfo.mi_idx = idx;
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
*start = xiocb.plist.xiocb_meminfo.mi_addr;
*length = xiocb.plist.xiocb_meminfo.mi_size;
*type = xiocb.plist.xiocb_meminfo.mi_type;
return 0;
}
int cfe_exit(int warm, int status)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_RESTART;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = warm ? CFE_FLG_WARMSTART : 0;
xiocb.xiocb_psize = sizeof(struct xiocb_exitstat);
xiocb.plist.xiocb_exitstat.status = status;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_flushcache(int flg)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_FLUSHCACHE;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = flg;
xiocb.xiocb_psize = 0;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_getdevinfo(char *name)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_GETINFO;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
xiocb.plist.xiocb_buffer.buf_offset = 0;
xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
xiocb.plist.xiocb_buffer.buf_length = strlen(name);
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
return xiocb.plist.xiocb_buffer.buf_ioctlcmd;
}
int cfe_getenv(char *name, char *dest, int destlen)
{
struct cfe_xiocb xiocb;
*dest = 0;
xiocb.xiocb_fcode = CFE_CMD_ENV_GET;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
xiocb.plist.xiocb_envbuf.enum_idx = 0;
xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
xiocb.plist.xiocb_envbuf.name_length = strlen(name);
xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(dest);
xiocb.plist.xiocb_envbuf.val_length = destlen;
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_getfwinfo(cfe_fwinfo_t * info)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_GETINFO;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_fwinfo);
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
info->fwi_version = xiocb.plist.xiocb_fwinfo.fwi_version;
info->fwi_totalmem = xiocb.plist.xiocb_fwinfo.fwi_totalmem;
info->fwi_flags = xiocb.plist.xiocb_fwinfo.fwi_flags;
info->fwi_boardid = xiocb.plist.xiocb_fwinfo.fwi_boardid;
info->fwi_bootarea_va = xiocb.plist.xiocb_fwinfo.fwi_bootarea_va;
info->fwi_bootarea_pa = xiocb.plist.xiocb_fwinfo.fwi_bootarea_pa;
info->fwi_bootarea_size =
xiocb.plist.xiocb_fwinfo.fwi_bootarea_size;
return 0;
}
int cfe_getstdhandle(int flg)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_GETHANDLE;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = flg;
xiocb.xiocb_psize = 0;
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
return xiocb.xiocb_handle;
}
int64_t
cfe_getticks(void)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_time);
xiocb.plist.xiocb_time.ticks = 0;
cfe_iocb_dispatch(&xiocb);
return xiocb.plist.xiocb_time.ticks;
}
int cfe_inpstat(int handle)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = handle;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_inpstat);
xiocb.plist.xiocb_inpstat.inp_status = 0;
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
return xiocb.plist.xiocb_inpstat.inp_status;
}
int
cfe_ioctl(int handle, unsigned int ioctlnum, unsigned char *buffer,
int length, int *retlen, u64 offset)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = handle;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
xiocb.plist.xiocb_buffer.buf_offset = offset;
xiocb.plist.xiocb_buffer.buf_ioctlcmd = ioctlnum;
xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
xiocb.plist.xiocb_buffer.buf_length = length;
cfe_iocb_dispatch(&xiocb);
if (retlen)
*retlen = xiocb.plist.xiocb_buffer.buf_retlen;
return xiocb.xiocb_status;
}
int cfe_open(char *name)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
xiocb.plist.xiocb_buffer.buf_offset = 0;
xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(name);
xiocb.plist.xiocb_buffer.buf_length = strlen(name);
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
return xiocb.xiocb_handle;
}
int cfe_read(int handle, unsigned char *buffer, int length)
{
return cfe_readblk(handle, 0, buffer, length);
}
int cfe_readblk(int handle, s64 offset, unsigned char *buffer, int length)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = handle;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
xiocb.plist.xiocb_buffer.buf_offset = offset;
xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
xiocb.plist.xiocb_buffer.buf_length = length;
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
return xiocb.plist.xiocb_buffer.buf_retlen;
}
int cfe_setenv(char *name, char *val)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = 0;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_envbuf);
xiocb.plist.xiocb_envbuf.enum_idx = 0;
xiocb.plist.xiocb_envbuf.name_ptr = XPTR_FROM_NATIVE(name);
xiocb.plist.xiocb_envbuf.name_length = strlen(name);
xiocb.plist.xiocb_envbuf.val_ptr = XPTR_FROM_NATIVE(val);
xiocb.plist.xiocb_envbuf.val_length = strlen(val);
cfe_iocb_dispatch(&xiocb);
return xiocb.xiocb_status;
}
int cfe_write(int handle, const char *buffer, int length)
{
return cfe_writeblk(handle, 0, buffer, length);
}
int cfe_writeblk(int handle, s64 offset, const char *buffer, int length)
{
struct cfe_xiocb xiocb;
xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
xiocb.xiocb_status = 0;
xiocb.xiocb_handle = handle;
xiocb.xiocb_flags = 0;
xiocb.xiocb_psize = sizeof(struct xiocb_buffer);
xiocb.plist.xiocb_buffer.buf_offset = offset;
xiocb.plist.xiocb_buffer.buf_ptr = XPTR_FROM_NATIVE(buffer);
xiocb.plist.xiocb_buffer.buf_length = length;
cfe_iocb_dispatch(&xiocb);
if (xiocb.xiocb_status < 0)
return xiocb.xiocb_status;
return xiocb.plist.xiocb_buffer.buf_retlen;
}
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