release/src-rt-6.x.4708/cfe/cfe/arch/mips/cpu/sb1250/src/cfe_device_ldr.c

   1 /*  *********************************************************************
   2     *  Broadcom Common Firmware Environment (CFE)
   3     *
   4     *  SB1250 PCI Device-mode downloader        File: cfe_device_ldr.c
   5     *
   6     *  This invokes the CFE loader to retrieve an elf binary from the
   7     *  PCI host using the host0 device.
   8     *
   9     *********************************************************************
  10     *
  11     *  Copyright 2000,2001,2002,2003
  12     *  Broadcom Corporation. All rights reserved.
  13     *
  14     *  This software is furnished under license and may be used and
  15     *  copied only in accordance with the following terms and
  16     *  conditions.  Subject to these conditions, you may download,
  17     *  copy, install, use, modify and distribute modified or unmodified
  18     *  copies of this software in source and/or binary form.  No title
  19     *  or ownership is transferred hereby.
  20     *
  21     *  1) Any source code used, modified or distributed must reproduce
  22     *     and retain this copyright notice and list of conditions
  23     *     as they appear in the source file.
  24     *
  25     *  2) No right is granted to use any trade name, trademark, or
  26     *     logo of Broadcom Corporation.  The "Broadcom Corporation"
  27     *     name may not be used to endorse or promote products derived
  28     *     from this software without the prior written permission of
  29     *     Broadcom Corporation.
  30     *
  31     *  3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
  32     *     IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
  33     *     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  34     *     PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
  35     *     SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
  36     *     PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
  37     *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  38     *     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  39     *     GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  40     *     BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  41     *     OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  42     *     TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
  43     *     THE POSSIBILITY OF SUCH DAMAGE.
  44     ********************************************************************* */
  45
  46
  47 #include "sbmips.h"
  48 #include "lib_types.h"
  49 #include "lib_printf.h"
  50
  51 #include "cfe_loader.h"
  52 #include "cfe_timer.h"
  53 #include "sb1250_defs.h"
  54 #include "sb1250_regs.h"
  55 #define K1_PTR64(pa) ((uint64_t *)(PHYS_TO_K1(pa)))
  56
  57 extern cfe_loadargs_t cfe_loadargs;
  58
  59 #define MBOX_ARG_WORD  0
  60 #define MBOX_CMD_WORD  1
  61
  62 int cfe_device_download(int boot, char *options);
  63 int
  64 cfe_device_download(int boot, char *options)
  65 {
  66     cfe_loadargs_t *la = &cfe_loadargs;
  67     int res;
  68     uint64_t *mbox_p = K1_PTR64 (A_IMR_REG(NULL, ISTER(0, R_IMR_MAILBOX_CPU));
  69     uint64_t *mbox_clr = K1_PTR64 (A_IMR_REG(NULL, ISTER(0, R_IMR_MAILBOX_CLR_CPU));
  70     uint64_t *mbox_set = K1_PTR64 (A_IMR_REG(NULL, ISTER(0, R_IMR_MAILBOX_SET_CPU));
  71     uint32_t *cmd_p = ((uint32_t *)mbox_p) + MBOX_CMD_WORD;
  72
  73     xprintf("Loader:elf Filesys:raw Dev:host0");
  74
  75     /* Wait for the host to supply any host-selected options.  There
  76        is no timeout here because we don't know the host's timing and,
  77        on a real device card, probably wouldn't have anything to do
  78        until downloaded. */
  79
  80     while ((*cmd_p & 0x3) == 0) {
  81         POLL();
  82         }
  83
  84     /* Fill out the loadargs */
  85
  86     la->la_flags = LOADFLG_NOISY;
  87
  88     la->la_device = "host0";
  89     la->la_filesys = "raw";
  90     la->la_filename = NULL;
  91
  92     if ((*cmd_p & 0x2) != 0) la->la_flags |= LOADFLG_COMPRESSED;
  93     la->la_options = options;
  94
  95     xprintf(" Options:%s\n", la->la_options);
  96
  97     res = cfe_boot("elf", la);
  98
  99     /* First supply the result code */
 100     *((uint32_t *)mbox_clr + MBOX_ARG_WORD) = 0xffffffff;
 101     *((uint32_t *)mbox_set + MBOX_ARG_WORD) = (uint32_t)res;
 102
 103     /* Then the ack (0x0) */
 104     *((uint32_t *)mbox_clr + MBOX_CMD_WORD) = 0xffffff;
 105
 106     if (res < 0) {
 107         xprintf("Could not download from %s:\n", la->la_device);
 108         return res;
 109         }
 110
 111     if (boot && la->la_entrypt != 0) {
 112         cfe_go(la);
 113         /* We won't actually return to here */
 114         }
 115
 116     return res;
 117 }