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reios: fix wince cdi loading. implement bios misc 0 call.

This commit is contained in:
Flyinghead 2021-05-21 18:29:56 +02:00
parent c44493cd8a
commit 628b7b7dd9
1 changed files with 34 additions and 6 deletions
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40
core/reios/reios.cpp
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@ -18,11 +18,13 @@
#include "hw/sh4/sh4_core.h"
#include "hw/sh4/sh4_mem.h"
#include "hw/holly/sb_mem.h"
#include "hw/holly/sb.h"
#include "hw/naomi/naomi_cart.h"
#include "iso9660.h"
#include "font.h"
#include "hw/aica/aica.h"
#include "hw/aica/aica_mem.h"
#include "hw/pvr/pvr_regs.h"
#include "oslib/oslib.h"
#include "imgread/common.h"
@ -46,6 +48,7 @@
static MemChip *flashrom;
static u32 base_fad = 45150;
static bool descrambl = false;
static u32 bootSectors;
static void reios_pre_init()
{
@ -110,11 +113,18 @@ static bool reios_locate_bootfile(const char* bootfile)
{
INFO_LOG(REIOS, "Found %.*s at offset %X", bootfile_len, bootfile, i);
u32 lba = decode_iso733(dir->extent);
u32 lba = decode_iso733(dir->extent) + 150;
u32 len = decode_iso733(dir->size);
if (!memcmp(bootfile, "0WINCEOS.BIN", 12))
if (ip_meta.wince == '1')
{
if (descrambl)
{
WARN_LOG(REIOS, "Unsupported CDI: wince == '1'");
delete[] temp;
return false;
}
libGDR_ReadSector(GetMemPtr(0x8ce01000, 0), lba, 1, 2048);
lba++;
len -= 2048;
}
@ -122,10 +132,11 @@ static bool reios_locate_bootfile(const char* bootfile)
INFO_LOG(REIOS, "file LBA: %d", lba);
INFO_LOG(REIOS, "file LEN: %d", len);
bootSectors = (len + 2047) / 2048;
if (descrambl)
descrambl_file(lba + 150, len, GetMemPtr(0x8c010000, 0));
descrambl_file(lba, len, GetMemPtr(0x8c010000, 0));
else
libGDR_ReadSector(GetMemPtr(0x8c010000, 0), lba + 150, (len + 2047) / 2048, 2048);
libGDR_ReadSector(GetMemPtr(0x8c010000, 0), lba, bootSectors, 2048);
delete[] temp;
@ -213,7 +224,7 @@ static void reios_sys_system() {
debugf("reios_sys_system: SYSINFO_ICON");
// r4 = icon number (0-9, but only 5-9 seems to really be icons)
// r5 = destination buffer (704 bytes in size)
r[0] = 704;
r[0] = r[4] > 9 ? -1 : 704;
break;
case 3: //SYSINFO_ID
@ -223,6 +234,7 @@ static void reios_sys_system() {
default:
WARN_LOG(REIOS, "reios_sys_system: unhandled cmd %d", cmd);
r[0] = -1;
break;
}
}
@ -373,13 +385,29 @@ static void reios_sys_misc()
INFO_LOG(REIOS, "reios_sys_misc - r7: 0x%08X, r4 0x%08X, r5 0x%08X, r6 0x%08X", r[7], r[4], r[5], r[6]);
switch (r[4])
{
case 0: // normal init
SB_GDSTARD = 0xc010000 + bootSectors * 2048;
SB_IML2NRM = 0;
r[0] = 0xc0bebc;
VO_BORDER_COL.full = r[0];
break;
case 1: // Exit to BIOS menu
WARN_LOG(REIOS, "SYS_MISC 1");
break;
case 2: // check disk
r[0] = 0;
// Reload part of IP.BIN bootstrap
libGDR_ReadSector(GetMemPtr(0x8c008100, 0), base_fad, 7, 2048);
break;
case 3: // Exit to CD menu
WARN_LOG(REIOS, "SYS_MISC 3");
break;
default:
WARN_LOG(REIOS, "Unknown SYS_MISC call: %d", r[4]);
break;
}
}