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* remove my old (and buggy) ramdisc (libFAT-Wrapper) with my new

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real dynamic ramdisk (currently unused)
* added Make.config
This commit is contained in:
ardi@ist-einmalig.de 2009-10-31 23:23:27 +00:00
parent 5ac0aa0df8
commit 12e42498dc
9 changed files with 1141 additions and 222 deletions
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12
Make.config.default Normal file
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@ -0,0 +1,12 @@
#
# to use this file rename Make.config.default to Make.config
# or create a new Make.config
#
# yoy can here add defines
#
# in example i have included a switch to diseble
# the gecko-debug stuff. so also in source gecko.c+gecko.h
#
# NOTE when add, remove or change a define here then a "make clean" is needed
#
CFLAGS += -DNO_DEBUG

4
Makefile
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@ -19,7 +19,7 @@ BUILD := build
SOURCES := source source/libwiigui source/images source/fonts source/sounds \
source/libwbfs source/unzip source/language source/mload source/patches \
source/usbloader source/xml source/network source/settings source/prompts \
source/ramdisc source/wad source/banner source/cheats source/homebrewboot \
source/ramdisk source/wad source/banner source/cheats source/homebrewboot \
source/themes
DATA := data
INCLUDES := source
@ -31,7 +31,7 @@ INCLUDES := source
CFLAGS = -g -O2 -save-temps -Wall $(MACHDEP) $(INCLUDE)
CXXFLAGS = -Xassembler -aln=$@.lst $(CFLAGS)
LDFLAGS = -g $(MACHDEP) -Wl,-Map,$(notdir $@).map,--section-start,.init=0x80B00000
-include $(PROJECTDIR)/Make.config
#---------------------------------------------------------------------------------
# any extra libraries we wish to link with the project
#---------------------------------------------------------------------------------

14
source/gecko.c
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@ -9,9 +9,19 @@
* Wirzenius wrote this portably, Torvalds fucked it up :-)
*/
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <gccore.h>
/* init-globals */
bool geckoinit = false;
#ifndef NO_DEBUG
/* we use this so that we can do without the ctype library */
#define is_digit(c) ((c) >= '0' && (c) <= '9')
@ -271,9 +281,6 @@ int kvsprintf1(char *buf, const char *fmt, va_list args)
}
#include <gccore.h>
bool geckoinit = false;
bool InitGecko()
{
@ -303,3 +310,4 @@ void gprintf(const char *str, ...)
usb_sendbuffer_safe(1,__outstr,len);
}
#endif /* NO_DEBUG */

7
source/gecko.h
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@ -8,9 +8,16 @@ extern "C" {
#endif
//giantpune's functions for USB gecko
#ifndef NO_DEBUG
//use this just like printf();
void gprintf(const char *str, ...);
bool InitGecko();
#else
#define gprintf(...)
#define InitGecko() false
#endif /* NO_DEBUG */
#ifdef __cplusplus
}

1
source/lstub.c
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@ -113,7 +113,6 @@ u64 getStubDest()
ret[5] = stub[5];
ret[6] = stub[12];
ret[7] = stub[13];
ret[8] = 0x00;
memcpy(&retu, ret, 8);

174
source/ramdisc/ramdisc.cpp
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@ -1,174 +0,0 @@
#include <string.h>
#include "ramdisc.h"
static inline u16 u8array_to_u16 (const u8* item, int offset) {
return ( item[offset] | (item[offset + 1] << 8));
}
static inline u32 u8array_to_u32 (const u8* item, int offset) {
return ( item[offset] | (item[offset + 1] << 8) | (item[offset + 2] << 16) | (item[offset + 3] << 24) );
}
static inline void u16_to_u8array (u8* item, int offset, u16 value) {
item[offset] = (u8) value;
item[offset + 1] = (u8)(value >> 8);
}
static inline void u32_to_u8array (u8* item, int offset, u32 value) {
item[offset] = (u8) value;
item[offset + 1] = (u8)(value >> 8);
item[offset + 2] = (u8)(value >> 16);
item[offset + 3] = (u8)(value >> 24);
}
class padding {
public:
padding(u32 Start, u32 NumSectors) {
start = Start;
end = Start + NumSectors;
data = new u8[NumSectors*512];
next = 0;
}
~padding() {
delete [] data;
}
u32 start;
u32 end;
u8 *data;
padding *next;
};
static u32 __ramdisk_sectorsOfPadding;
static padding *__ramdisk_data_start;
static padding *__ramdisk_data_end;
static bool __ramdisk_IsInserted(void) {
return __ramdisk_data_start!=NULL;
}
//forward decleration
static bool __ramdisk_WriteSectors(size_t Sector, size_t numSectors, u8 *Buffer);
bool initRAMDisc(u32 Size, u32 Padding) {
if (__ramdisk_data_start) return true; // is init
if (Size > 16*1024*1024) Size = 16*1024*1024; // maximum 16 MB
if (Size < 16*1024) Size = 16*1024; // minimum 16 MB
if (Padding > Size) Padding = Size; // Padding maximum =Disksize
if (Padding < 4*1024) Padding = 4*1024; // Padding minimum 4kB
__ramdisk_sectorsOfPadding = Padding/512;
__ramdisk_data_start = __ramdisk_data_end = new padding(0, __ramdisk_sectorsOfPadding);
if (!__ramdisk_data_start) return false;
// FAT12 Formatieren
u8 sector[512] = {0, };
sector[0x00d] = 2; /*BPB_sectorsPerCluster*/
sector[0x00e] = 1; /*BPB_reservedSectors*/
sector[0x010] = 1; /*BPB_numFATs*/
u16_to_u8array (sector, 0x011, 48); /*BPB_rootEntries*/
int num_sectors = Size/512;
u16_to_u8array (sector, 0x013, num_sectors); /*BPB_numSectorsSmall*/
int num_clusters = (num_sectors-1-3) /2;
int sectors_per_fat = (num_clusters * 3 + 1023) /1024;
u16_to_u8array (sector, 0x016, sectors_per_fat); /*BPB_sectorsPerFAT*/
//u32_to_u8array (sector, 0x020, Size/512); /*BPB_numSectors*/
sector[0x036] = 'F';
sector[0x037] = 'A';
sector[0x038] = 'T';
sector[0x1fe] = 0x55;
sector[0x1ff] = 0xaa;
if (!__ramdisk_WriteSectors(0, 1, sector))
goto error;
memset(sector, 0, 512);
// clear FAT & rootDir
for (int i=1; i<= sectors_per_fat+3/*sectors_per_rootDir*/; i++)
if (!__ramdisk_WriteSectors(1, 1, sector))
goto error;
return true;
error:
delete __ramdisk_data_start;
__ramdisk_data_start = 0;
return false;
}
void exitRAMDisc() {
while (__ramdisk_data_start) {
padding *tmp = __ramdisk_data_start;
__ramdisk_data_start = __ramdisk_data_start->next;
delete tmp;
}
}
static u8 *__ramdisk_findSector(size_t Sector, size_t *Sectors) {
if (__ramdisk_data_start==NULL) return NULL;
for (padding *tmp = __ramdisk_data_start; tmp; tmp=tmp->next) {
if (tmp->start <= Sector && tmp->end >= Sector) {
if (Sectors) *Sectors = 1+tmp->end-Sector;
return &(tmp->data[(Sector-tmp->start)*512]);
}
}
// not found -> add padding
__ramdisk_data_end->next = new padding((Sector/__ramdisk_sectorsOfPadding)*__ramdisk_sectorsOfPadding, __ramdisk_sectorsOfPadding);
if (__ramdisk_data_end->next) {
__ramdisk_data_end = __ramdisk_data_end->next;
return &( __ramdisk_data_end->data[(Sector-__ramdisk_data_end->start)*512]);
}
return 0;
}
static bool __ImplizitInit = false;
static bool __ramdisk_Startup(void) {
if (!__ramdisk_IsInserted()) {
// Std=8MB/64kB Padding
return (__ImplizitInit = initRAMDisc(8*1024*1024, 64 * 1024));
}
return true;
}
static bool __ramdisk_ReadSectors(size_t Sector, size_t numSectors, u8 *Buffer) {
size_t num_sectors;
while (numSectors) {
if (u8 *buff = __ramdisk_findSector(Sector,&num_sectors)) {
if (num_sectors > numSectors) num_sectors = numSectors;
memcpy(Buffer, buff, num_sectors * 512);
numSectors -= num_sectors;
Buffer+= num_sectors;
} else
return false;
}
return true;
}
static bool __ramdisk_WriteSectors(size_t Sector, size_t numSectors, u8 *Buffer) {
size_t num_sectors;
while (numSectors) {
if (u8 *buff = __ramdisk_findSector(Sector,&num_sectors)) {
if (num_sectors > numSectors) num_sectors = numSectors;
memcpy(buff, Buffer, num_sectors * 512);
numSectors -= num_sectors;
Buffer+= num_sectors;
} else
return false;
}
return true;
}
static bool __ramdisk_ClearStatus(void) {
return true;
}
static bool __ramdisk_Shutdown(void) {
if (__ImplizitInit) {
__ImplizitInit = false;
exitRAMDisc();
}
return true;
}
const DISC_INTERFACE __io_ramdisk = {
DEVICE_TYPE_RAM_DISK,
FEATURE_MEDIUM_CANREAD | FEATURE_MEDIUM_CANWRITE | 0x1000,
(FN_MEDIUM_STARTUP)&__ramdisk_Startup,
(FN_MEDIUM_ISINSERTED)&__ramdisk_IsInserted,
(FN_MEDIUM_READSECTORS)&__ramdisk_ReadSectors,
(FN_MEDIUM_WRITESECTORS)&__ramdisk_WriteSectors,
(FN_MEDIUM_CLEARSTATUS)&__ramdisk_ClearStatus,
(FN_MEDIUM_SHUTDOWN)&__ramdisk_Shutdown
};

39
source/ramdisc/ramdisc.h
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@ -1,39 +0,0 @@
#ifndef __RAMDISC_H
#define __RAMDISC_H
#include <gctypes.h>
#include <ogc/disc_io.h>
#define DEVICE_TYPE_RAM_DISK (('R'<<24)|('A'<<16)|('M'<<8)|'D')
extern const DISC_INTERFACE __io_ramdisk;
/*
initRamDisc initialize a dynamic RAM-disc.
Size is the maximum disksize in a range from 16kB up to 16MB
Padding is the size of blocks to be allocate in a range from 4kB up to Disksize
The RAM-disc is formated in FAT12.
*/
bool initRAMDisc(u32 Size, u32 Padding);
/*
exitRAMDisc destroy all datas
*/
void exitRAMDisc();
/*
NOTE:
if the RAM-disc allready initialized, then initRAMDisc returns with "true" without reinitialize it with the new parameters.
__io_ramdisk.startup() initialize a ramdisc of 8MB with a padding of 64kB
__io_ramdisk.shutdown () will only destroy the RAM-disk, if they from __io_ramdisk.startup () was initialized
if the ramdisc initialized from initRamDisc, then you can remount the filesystem without lost all datas
Example:
fatMount("RAM", &__io_ramdisk, 0, 0, 0);
...
fopen("RAM:/file", ...);
*/
#endif /*__RAMDISC_H*/

1020
source/ramdisk/ramdisk.cpp Normal file
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86
source/ramdisk/ramdisk.h Normal file
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@ -0,0 +1,86 @@
#ifndef __RAMDISK_H
#define __RAMDISK_H
#ifdef __cplusplus
extern "C"
{
#endif
/*
ramdiskCreate initialize a dynamic RAM-disk.
return: Handle for ramdiskMount
*/
void* ramdiskCreate();
/**************************************************
* ramdiskDelete
*
* destroy all datas
* if the ramdisk is allready mounted forces ramdiskUnmount
* IN: a Handle was created witch ramdiskCreate();
**************************************************/
void ramdiskDelete(void* Handle);
/**************************************************
* ramdiskMount
*
* mounts a ramdisk
* IN: mountpoint e.g. "RAM" or "MEM:"
* handle is a Handle was created ramdiskCreate()
* or NULL for auto-create
* OUT: 0 = Error / !0 = OK
**************************************************/
int ramdiskMount(const char *mountpoint, void *handle);
/**************************************************
* ramdiskUnmount
*
* unmounts a ramdisk
* IN: mountpoint e.g "RAM" or "MEM:"
**************************************************/
void ramdiskUnmount(const char *mountpoint);
/*
NOTE:
if the ramdisk not explizit created with ramdiskCreate (e.g ramdiskMount("RAMDISK:", NULL))
the ramdisk is implizit created. When unmount this "auto-created" ramdisk the ramdisk automitic deleted
but if the ramdisk explizit created (with ramdiskCreate),
then we can remount the filesystem without lost all datas.
Example1:
=========
void *ram = ramdiskCreate(); // create ramdisk
ramdiskMount("RAM", ram); // mount the ramdisk
...
fopen("RAM:/file", ...);
...
ramdiskMount("MEM", ram); // remount as MEM: (without lost of data)
...
fopen("RAM:/file", ...);
...
ramdiskUnmount("MEM"); // unmount
...
ramdiskMount("RAM", ram); // remount as RAM: (without lost of data)
...
ramdiskDelete(ram); // unmount and delete
Example2:
=========
ramdiskMount("RAM", NULL); // create and mount the ramdisk
...
fopen("RAM:/file", ...);
...
ramdiskUnmount("RAM"); // unmount and delete
*/
#ifdef __cplusplus
}
#endif
#endif /*__RAMDISK_H*/