cfe_api.c
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上传日期:2013-04-10
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文件大小:10k
- /*
- * Copyright (C) 2000, 2001 Broadcom Corporation
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
- /* *********************************************************************
- * Broadcom Common Firmware Environment (CFE)
- *
- * Device Function stubs File: cfe_api.c
- *
- * 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.
- *
- * Author: Mitch Lichtenberg (mpl@broadcom.com)
- *
- ********************************************************************* */
- #include "cfe_xiocb.h"
- #include "cfe_api.h"
- static long cfe_console_handle = -1;
- static int (*cfe_dispfunc)(long handle,cfe_xiocb_t *xiocb) = 0;
- static cfe_xuint_t cfe_handle = 0;
- /*
- * This macro makes a "signed 64-bit pointer" - basically extending a regular
- * pointer to its 64-bit compatibility space equivalent.
- */
- #define BIGPTR(x) (long long) (long) (x)
- typedef unsigned long intptr_t;
- int cfe_init(cfe_xuint_t handle)
- {
- if ((*((unsigned int *) (int) CFE_APISEAL) == CFE_EPTSEAL) ||
- (*((unsigned int *) (int) CFE_APISEAL_RE) == CFE_EPTSEAL) ||
- (*((unsigned int *) (int) CFE_APISEAL_OLD) == CFE_EPTSEAL)) {
- cfe_dispfunc = (cfe_xptr_t) (int) CFE_APIENTRY;
- if (handle) cfe_handle = handle;
- return 0;
- } else {
- return -1;
- }
- }
- int cfe_iocb_dispatch(cfe_xiocb_t *xiocb);
- int cfe_iocb_dispatch(cfe_xiocb_t *xiocb)
- {
- if (!cfe_dispfunc) return -1;
- return (*cfe_dispfunc)(cfe_handle,xiocb);
- }
- static int cfe_strlen(char *name)
- {
- int count = 0;
- while (*name) {
- count++;
- name++;
- }
- return count;
- }
- int cfe_open(char *name)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_DEV_OPEN;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
- xiocb.plist.xiocb_buffer.buf_offset = 0;
- xiocb.plist.xiocb_buffer.buf_ptr = BIGPTR(name);
- xiocb.plist.xiocb_buffer.buf_length = cfe_strlen(name);
- cfe_iocb_dispatch(&xiocb);
- return (xiocb.xiocb_status < 0) ? xiocb.xiocb_status : xiocb.xiocb_handle;
- }
- int cfe_close(int handle)
- {
- cfe_xiocb_t 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_readblk(int handle,cfe_xint_t offset,unsigned char *buffer,int length)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_DEV_READ;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = handle;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
- xiocb.plist.xiocb_buffer.buf_offset = offset;
- xiocb.plist.xiocb_buffer.buf_ptr = BIGPTR(buffer);
- xiocb.plist.xiocb_buffer.buf_length = length;
- cfe_iocb_dispatch(&xiocb);
- return (xiocb.xiocb_status < 0) ? xiocb.xiocb_status : xiocb.plist.xiocb_buffer.buf_retlen;
- }
- int cfe_read(int handle,unsigned char *buffer,int length)
- {
- return cfe_readblk(handle,0,buffer,length);
- }
- int cfe_writeblk(int handle,cfe_xint_t offset,unsigned char *buffer,int length)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_DEV_WRITE;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = handle;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
- xiocb.plist.xiocb_buffer.buf_offset = offset;
- xiocb.plist.xiocb_buffer.buf_ptr = BIGPTR(buffer);
- xiocb.plist.xiocb_buffer.buf_length = length;
- cfe_iocb_dispatch(&xiocb);
- return (xiocb.xiocb_status < 0) ? xiocb.xiocb_status : xiocb.plist.xiocb_buffer.buf_retlen;
- }
- int cfe_write(int handle,unsigned char *buffer,int length)
- {
- return cfe_writeblk(handle,0,buffer,length);
- }
- int cfe_ioctl(int handle,unsigned int ioctlnum,unsigned char *buffer,int length,int *retlen)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_DEV_IOCTL;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = handle;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_buffer_t);
- xiocb.plist.xiocb_buffer.buf_ioctlcmd = (cfe_xint_t) ioctlnum;
- xiocb.plist.xiocb_buffer.buf_ptr = BIGPTR(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_inpstat(int handle)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_DEV_INPSTAT;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = handle;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_inpstat_t);
- 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;
- }
- long long cfe_getticks(void)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_FW_GETTIME;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_time_t);
- xiocb.plist.xiocb_time.ticks = 0;
- cfe_iocb_dispatch(&xiocb);
- return xiocb.plist.xiocb_time.ticks;
- }
- int cfe_getenv(char *name,char *dest,int destlen)
- {
- cfe_xiocb_t 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(xiocb_envbuf_t);
- xiocb.plist.xiocb_envbuf.enum_idx = 0;
- xiocb.plist.xiocb_envbuf.name_ptr = BIGPTR(name);
- xiocb.plist.xiocb_envbuf.name_length = cfe_strlen(name);
- xiocb.plist.xiocb_envbuf.val_ptr = BIGPTR(dest);
- xiocb.plist.xiocb_envbuf.val_length = destlen;
- cfe_iocb_dispatch(&xiocb);
- return xiocb.xiocb_status;
- }
- int cfe_setenv(char *name,char *val)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
- xiocb.plist.xiocb_envbuf.enum_idx = 0;
- xiocb.plist.xiocb_envbuf.name_ptr = BIGPTR(name);
- xiocb.plist.xiocb_envbuf.name_length = cfe_strlen(name);
- xiocb.plist.xiocb_envbuf.val_ptr = BIGPTR(val);
- xiocb.plist.xiocb_envbuf.val_length = cfe_strlen(val);
- cfe_iocb_dispatch(&xiocb);
- return xiocb.xiocb_status;
- }
- int cfe_enummem(long idx, unsigned long long *addr, unsigned long long *size, long *type)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_FW_MEMENUM;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_meminfo_t);
- xiocb.plist.xiocb_meminfo.mi_idx = idx;
- cfe_iocb_dispatch(&xiocb);
- (*addr) = xiocb.plist.xiocb_meminfo.mi_addr;
- (*size) = xiocb.plist.xiocb_meminfo.mi_size;
- (*type) = xiocb.plist.xiocb_meminfo.mi_type;
- return xiocb.xiocb_status;
- }
- int cfe_enumenv(int idx,char *name,int namelen,char *val,int vallen)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_ENV_SET;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_envbuf_t);
- xiocb.plist.xiocb_envbuf.enum_idx = idx;
- xiocb.plist.xiocb_envbuf.name_ptr = BIGPTR(name);
- xiocb.plist.xiocb_envbuf.name_length = namelen;
- xiocb.plist.xiocb_envbuf.val_ptr = BIGPTR(val);
- xiocb.plist.xiocb_envbuf.val_length = vallen;
- cfe_iocb_dispatch(&xiocb);
- return xiocb.xiocb_status;
- }
- int cfe_exit(int warm, int status)
- {
- cfe_xiocb_t 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(xiocb_exitstat_t);
- xiocb.plist.xiocb_exitstat.status = (cfe_xint_t) status;
- cfe_iocb_dispatch(&xiocb);
- return (xiocb.xiocb_status);
- }
- int cfe_flushcache(int flg)
- {
- cfe_xiocb_t 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_getstdhandle(int flg)
- {
- cfe_xiocb_t 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);
- return (xiocb.xiocb_status < 0) ? xiocb.xiocb_status : xiocb.xiocb_handle;
- }
- int cfe_start_cpu(int cpu, void (*fn)(void), long sp, long gp, long a1)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_cpuctl_t);
- 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_stop_cpu(int cpu)
- {
- cfe_xiocb_t xiocb;
- xiocb.xiocb_fcode = CFE_CMD_FW_CPUCTL;
- xiocb.xiocb_status = 0;
- xiocb.xiocb_handle = 0;
- xiocb.xiocb_flags = 0;
- xiocb.xiocb_psize = sizeof(xiocb_cpuctl_t);
- 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;
- }
- void cfe_open_console()
- {
- cfe_console_handle = cfe_getstdhandle(CFE_STDHANDLE_CONSOLE);
- }
- void cfe_console_print(const char *str, int len)
- {
- int res;
- if (cfe_console_handle != -1) {
- do {
- res = cfe_writeblk(cfe_console_handle, 0, str, len);
- if (res < 0)
- break;
- str += res;
- len -= res;
- } while (len);
- }
- }