arch/m68k-amiga/diag/diag.c

   1 /*
   2     Copyright © 1995-2014, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #define DEBUG 1
   7
   8 #include <aros/debug.h>
   9 #include <exec/types.h>
  10 #include <exec/resident.h>
  11 #include <proto/expansion.h>
  12 #include <aros/asmcall.h>
  13 #include <libraries/expansionbase.h>
  14 #include <libraries/configvars.h>
  15 #include <libraries/configregs.h>
  16
  17 /* This is first RTF_COLDSTART resident.
  18  * Update ExpansionBase->ExecBase, call DAC_CONFIGTIME.
  19  */
  20
  21 #define _STR(A) #A
  22 #define STR(A) _STR(A)
  23
  24 #define NAME "diag init"
  25 #define VERSION 41
  26 #define REVISION 1
  27
  28 static AROS_UFP3 (APTR, Init,
  29                   AROS_UFPA(struct Library *, lh, D0),
  30                   AROS_UFPA(BPTR, segList, A0),
  31                   AROS_UFPA(struct ExecBase *, sysBase, A6));
  32
  33 static const TEXT name_string[] = NAME;
  34 static const TEXT version_string[] =
  35    NAME " " STR(VERSION) "." STR(REVISION) " " ADATE "\n";
  36
  37 extern void diag_end(void);
  38
  39 const struct Resident rom_tag =
  40 {
  41    RTC_MATCHWORD,
  42    (struct Resident *)&rom_tag,
  43    (APTR)&diag_end,
  44    RTF_COLDSTART,
  45    VERSION,
  46    NT_UNKNOWN,
  47    105,
  48    (STRPTR)name_string,
  49    (STRPTR)version_string,
  50    (APTR)Init
  51 };
  52
  53 D(
  54 static void debugRAM(void)
  55 {
  56         struct MemHeader *mh;
  57         ForeachNode(&SysBase->MemList, mh) {
  58                 bug("%08x: %08x - %08x %08x %d '%s'\n",
  59                         mh, mh->mh_Lower, mh->mh_Upper, mh->mh_Attributes,
  60                         mh->mh_Node.ln_Pri, mh->mh_Node.ln_Name ? (const char *)mh->mh_Node.ln_Name : "<null>");
  61         }
  62 }
  63 )
  64
  65 static BOOL calldiagrom(struct ExpansionBase *ExpansionBase, struct ConfigDev *configDev)
  66 {
  67         struct DiagArea *diag = configDev->cd_Rom.er_DiagArea;
  68         UWORD offset = diag->da_DiagPoint;
  69         APTR code = (APTR)(((UBYTE*)diag) + offset);
  70         ULONG ret;
  71
  72         // call autoconfig ROM da_DiagPoint
  73         D(bug("Call boot rom @%p board %p diag %p configdev %p\n",
  74                 code, configDev->cd_BoardAddr, diag, configDev));
  75         ret = AROS_UFC5(ULONG, code,
  76                 AROS_UFCA(APTR, configDev->cd_BoardAddr, A0),
  77                 AROS_UFCA(struct DiagArea*, diag, A2),
  78                 AROS_UFCA(struct ConfigDev*, configDev, A3),
  79                 AROS_UFCA(struct ExpansionBase*, ExpansionBase, A5),
  80                 AROS_UFCA(struct ExecBase*, SysBase, A6));
  81         D(bug(ret ? "->success\n" : "->failed\n"));
  82         return ret != 0;
  83 }
  84
  85
  86 // read one byte from expansion autoconfig ROM
  87 static void copyromdata(struct ConfigDev *configDev, UBYTE buswidth, UWORD size, UBYTE *out)
  88 {
  89         volatile UBYTE *rom = (UBYTE*)(configDev->cd_BoardAddr + configDev->cd_Rom.er_InitDiagVec);
  90         UWORD offset = 0;
  91
  92         switch (buswidth)
  93         {
  94                 case DAC_NIBBLEWIDE:
  95                         while (size-- > 0) {
  96                                 *out++ = (rom[offset * 4 + 0] & 0xf0) | ((rom[offset * 4 + 2] & 0xf0) >> 4);
  97                                 offset++;
  98                         }
  99                         break;
 100                 case DAC_BYTEWIDE:
 101                         while (size-- > 0) {
 102                                 *out++ = rom[offset * 2];
 103                                 offset++;
 104                         }
 105                         break;
 106                 case DAC_WORDWIDE:
 107                 default:
 108                         /* AOS does it this way */
 109                         CopyMem((void*)rom, out, size);
 110                         break;
 111         }
 112 }
 113
 114 static BOOL diagrom(struct ExpansionBase *ExpansionBase, struct ConfigDev *configDev)
 115 {
 116         struct DiagArea *da, datmp;
 117         UBYTE da_config, buswidth;
 118
 119         D(bug("Read boot ROM base=%p cd=%p type=%02x\n", configDev->cd_BoardAddr, configDev, configDev->cd_Rom.er_Type));
 120
 121         if (!(configDev->cd_Rom.er_Type & ERTF_DIAGVALID) || !configDev->cd_Rom.er_InitDiagVec) {
 122                 D(bug("Board without boot ROM\n"));
 123                 return FALSE;
 124         }
 125
 126         copyromdata(configDev, DAC_BYTEWIDE, 1, &da_config);
 127         /* NOTE: lower nibble may not be valid if actual bus type is not BYTEWIDE */
 128         D(bug("da_Config=%02x\n", da_config & 0xf0));
 129         buswidth = da_config & DAC_BUSWIDTH;
 130         if (buswidth == DAC_BUSWIDTH) // illegal
 131                 return FALSE;
 132         if ((da_config & DAC_BOOTTIME) != DAC_CONFIGTIME)
 133                 return FALSE;
 134
 135         // read DiagArea only
 136         copyromdata(configDev, buswidth, sizeof(struct DiagArea), (UBYTE*)&datmp);
 137
 138         D(bug("Size=%04x DiagPoint=%04x BootPoint=%04x Name=%04x\n",
 139                 datmp.da_Size, datmp.da_DiagPoint, datmp.da_BootPoint, datmp.da_Name));
 140         if (datmp.da_Size < sizeof (struct DiagArea))
 141                 return FALSE;
 142
 143         da = AllocMem(datmp.da_Size, MEMF_PUBLIC);
 144         if (!da)
 145                 return FALSE;
 146
 147         configDev->cd_Rom.er_DiagArea = da;
 148         // read rom data, DiagArea is also copied again. AOS compatibility!
 149         copyromdata(configDev, buswidth, datmp.da_Size, (UBYTE*)da);
 150
 151         D(if (da->da_Name != 0 && da->da_Name != 0xffff && da->da_Name < da->da_Size)
 152                 bug("Name='%s'\n", (UBYTE*)da + da->da_Name);)
 153
 154         return TRUE;
 155 }
 156
 157 static void callroms(struct ExpansionBase *ExpansionBase)
 158 {
 159         struct Node *node;
 160         D(bug("callroms\n"));
 161         ForeachNode(&ExpansionBase->BoardList, node) {
 162                 struct ConfigDev *configDev = (struct ConfigDev*)node;
 163                 if (diagrom(ExpansionBase, configDev)) {
 164                         if (!calldiagrom(ExpansionBase, configDev)) {
 165                                 FreeMem(configDev->cd_Rom.er_DiagArea, configDev->cd_Rom.er_DiagArea->da_Size);
 166                                 configDev->cd_Rom.er_DiagArea = NULL;
 167                         }
 168                 }
 169         }
 170         D(bug("callroms done\n"));
 171 }
 172
 173
 174 void InitKickMemDiag(void);
 175
 176 static AROS_UFH3 (APTR, Init,
 177                   AROS_UFHA(struct Library *, lh, D0),
 178                   AROS_UFHA(BPTR, segList, A0),
 179                   AROS_UFHA(struct ExecBase *, SysBase, A6)
 180 )
 181 {
 182    AROS_USERFUNC_INIT
 183
 184    struct ExpansionBase *eb = (struct ExpansionBase*)FindName(&SysBase->LibList, "expansion.library");
 185    if (!eb)
 186         Alert(AT_DeadEnd | AO_ExpansionLib);
 187
 188    eb->eb_Private02 = (IPTR)SysBase;
 189
 190    callroms(eb);
 191
 192    D(debugRAM());
 193
 194    /* ArosBootStrap mode? Check for kick modules again if some of our kick modules
 195     * are located in diag initialized ram (Blizzard A1200 accelerator boards)
 196     */
 197    InitKickMemDiag();
 198
 199    AROS_USERFUNC_EXIT
 200
 201    return NULL;
 202 }