freemyipod r653 - Code Review

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Repository:freemyipod
Revision:r652‎ | r653 | r654 >
Date:02:20, 24 March 2011
Author:theseven
Status:new
Tags:
Comment:
New library: mkfat32
Modified paths:
  • /libs/mkfat32 (added) (history)
  • /libs/mkfat32/Makefile (added) (history)
  • /libs/mkfat32/SOURCES (added) (history)
  • /libs/mkfat32/export (added) (history)
  • /libs/mkfat32/export/libmkfat32.h (added) (history)
  • /libs/mkfat32/ls.x (added) (history)
  • /libs/mkfat32/main.c (added) (history)
  • /libs/mkfat32/version.h (added) (history)

Diff [purge]

Index: libs/mkfat32/export/libmkfat32.h
@@ -0,0 +1,57 @@
 2+//
 3+//
 4+// Copyright 2010 TheSeven
 5+//
 6+//
 7+// This file is part of emCORE.
 8+//
 9+// emCORE is free software: you can redistribute it and/or
 10+// modify it under the terms of the GNU General Public License as
 11+// published by the Free Software Foundation, either version 2 of the
 12+// License, or (at your option) any later version.
 13+//
 14+// emCORE is distributed in the hope that it will be useful,
 15+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 16+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 17+// See the GNU General Public License for more details.
 18+//
 19+// You should have received a copy of the GNU General Public License along
 20+// with emCORE. If not, see <http://www.gnu.org/licenses/>.
 21+//
 22+//
 23+
 24+
 25+#ifndef __EXPORT_LIBMKFAT32_H__
 26+#define __EXPORT_LIBMKFAT32_H__
 27+
 28+#include "emcorelib.h"
 29+
 30+
 31+int mkfat32(int volume, int startsector, int totalsectors, int sectorsize, int secperclus,
 32+ const char* label, void* statususer, void (*statusinit)(void* user, int max),
 33+ void (*statuscallback)(void* user, int current));
 34+
 35+
 36+/* emCORE library identifier */
 37+#define LIBMKFAT32_IDENTIFIER 0x3233464d
 38+
 39+/* increase this every time the api struct changes */
 40+#define LIBMKFAT32_API_VERSION 1
 41+
 42+/* update this to latest version if a change to the api struct breaks
 43+ backwards compatibility (and please take the opportunity to sort in any
 44+ new function which are "waiting" at the end of the function table) */
 45+#define LIBMKFAT32_MIN_API_VERSION 1
 46+
 47+/* NOTE: To support backwards compatibility, only add new functions at
 48+ the end of the structure. Every time you add a new function,
 49+ remember to increase LIBMKFAT32_API_VERSION. If you make changes to the
 50+ existing APIs, also update LIBMKFAT32_MIN_API_VERSION to current version */
 51+
 52+struct libmkfat32_api
 53+{
 54+ typeof(mkfat32)* mkfat32;
 55+};
 56+
 57+
 58+#endif
Index: libs/mkfat32/SOURCES
@@ -0,0 +1 @@
 2+main.c
Index: libs/mkfat32/ls.x
@@ -0,0 +1,42 @@
 2+ENTRY(__emcore_lib_header)
 3+OUTPUT_FORMAT(elf32-littlearm)
 4+OUTPUT_ARCH(arm)
 5+
 6+MEMORY
 7+{
 8+ VIRTUAL : ORIGIN = 0x00000000, LENGTH = 0x10000000
 9+}
 10+
 11+SECTIONS
 12+{
 13+ .text :
 14+ {
 15+ __emcore_lib_base = .;
 16+ KEEP(.emcoreentrypoint*)
 17+ *(.emcoreentrypoint*)
 18+ *(.text*)
 19+ *(.glue_7)
 20+ *(.glue_7t)
 21+ . = ALIGN(0x10);
 22+ } > VIRTUAL
 23+
 24+ .data :
 25+ {
 26+ *(.rodata*)
 27+ . = ALIGN(0x4);
 28+ *(.data*)
 29+ . = ALIGN(0x10);
 30+ } > VIRTUAL
 31+
 32+ .bss (NOLOAD) :
 33+ {
 34+ *(.bss*)
 35+ *(COMMON)
 36+ } > VIRTUAL
 37+
 38+ /DISCARD/ :
 39+ {
 40+ *(.eh_frame)
 41+ }
 42+
 43+}
Index: libs/mkfat32/main.c
@@ -0,0 +1,99 @@
 2+//
 3+//
 4+// Copyright 2010 TheSeven
 5+//
 6+//
 7+// This file is part of emCORE.
 8+//
 9+// emCORE is free software: you can redistribute it and/or
 10+// modify it under the terms of the GNU General Public License as
 11+// published by the Free Software Foundation, either version 2 of the
 12+// License, or (at your option) any later version.
 13+//
 14+// emCORE is distributed in the hope that it will be useful,
 15+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 16+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 17+// See the GNU General Public License for more details.
 18+//
 19+// You should have received a copy of the GNU General Public License along
 20+// with emCORE. If not, see <http://www.gnu.org/licenses/>.
 21+//
 22+//
 23+
 24+
 25+#include "emcorelib.h"
 26+#include "export/libmkfat32.h"
 27+
 28+
 29+struct libmkfat32_api apitable =
 30+{
 31+ .mkfat32 = mkfat32
 32+};
 33+
 34+
 35+EMCORE_LIB_HEADER(LIBMKFAT32_IDENTIFIER, LIBMKFAT32_API_VERSION, LIBMKFAT32_MIN_API_VERSION,
 36+ NULL, NULL, apitable)
 37+
 38+
 39+int mkfat32(int volume, int startsector, int totalsectors, int sectorsize, int secperclus,
 40+ const char* label, void* statususer, void (*statusinit)(void* user, int max),
 41+ void (*statuscallback)(void* user, int current))
 42+{
 43+ uint32_t i, j;
 44+ uint32_t rootdirclus = 2;
 45+ uint32_t fatsectors = 1;
 46+ uint32_t oldfatsectors = 0;
 47+ uint32_t clustercount;
 48+ uint32_t reserved = 2;
 49+ disk_unmount(volume);
 50+ while (fatsectors != oldfatsectors)
 51+ {
 52+ oldfatsectors = fatsectors;
 53+ clustercount = (totalsectors - fatsectors - reserved) / secperclus;
 54+ fatsectors = (clustercount * 4 + sectorsize + 8) / sectorsize;
 55+ }
 56+ uint32_t database = fatsectors + reserved;
 57+ uint32_t clusoffset = 0;
 58+ uint32_t* buf = memalign(0x10, 32 * sectorsize);
 59+ memset(buf, 0, sectorsize);
 60+ memcpy(buf, "\xeb\x58\x00MSWIN5.0", 0xb);
 61+ ((uint8_t*)buf)[0xb] = sectorsize & 0xff;
 62+ ((uint8_t*)buf)[0xc] = sectorsize >> 8;
 63+ ((uint8_t*)buf)[0xd] = secperclus;
 64+ ((uint16_t*)buf)[7] = reserved;
 65+ memcpy(&((uint8_t*)buf)[0x10], "\x01\0\0\0\0\xf8\0\0\x3f\0\xff", 0xb);
 66+ buf[8] = startsector;
 67+ buf[8] = totalsectors;
 68+ buf[9] = fatsectors;
 69+ buf[0xb] = rootdirclus + clusoffset;
 70+ ((uint16_t*)buf)[0x18] = 1;
 71+ ((uint8_t*)buf)[0x40] = 0x80;
 72+ ((uint8_t*)buf)[0x42] = 0x29;
 73+ memcpy(&((uint8_t*)buf)[0x47], label, 0xb);
 74+ memcpy(&((uint8_t*)buf)[0x52], "FAT32 ", 8);
 75+ ((uint16_t*)buf)[0xff] = 0xaa55;
 76+ PASS_RC(storage_write_sectors_md(volume, startsector, 1, buf), 2, 0);
 77+ memset(buf, 0, sectorsize);
 78+ buf[0] = 0x41615252;
 79+ buf[0x79] = 0x61417272;
 80+ buf[0x7a] = clustercount - 1;
 81+ buf[0x7b] = 2;
 82+ buf[0x7f] = 0xaa550000;
 83+ PASS_RC(storage_write_sectors_md(volume, startsector + 1, 1, buf), 2, 1);
 84+ statusinit(statususer, fatsectors);
 85+ uint32_t cursect = 0;
 86+ for (i = 0; i < fatsectors; i += 32)
 87+ {
 88+ memset(buf, 0, 32 * sectorsize);
 89+ if (!i) memcpy(buf, "\xf8\xff\xff\x0f\xff\xff\xff\xff\xff\xff\xff\x0f", 12);
 90+ PASS_RC(storage_write_sectors_md(volume, startsector + reserved + i,
 91+ MIN(fatsectors - i, 32), buf), 2, 2);
 92+ statuscallback(statususer, i);
 93+ }
 94+ memset(buf, 0, secperclus * sectorsize);
 95+ memcpy(buf, label, 11);
 96+ ((uint8_t*)buf)[0xc] = 0x80;
 97+ PASS_RC(storage_write_sectors_md(volume, startsector + database, secperclus, buf), 2, 3);
 98+ free(buf);
 99+ disk_mount(volume);
 100+}
Index: libs/mkfat32/version.h
@@ -0,0 +1,36 @@
 2+//
 3+//
 4+// Copyright 2010 TheSeven
 5+//
 6+//
 7+// This file is part of emBIOS.
 8+//
 9+// emBIOS is free software: you can redistribute it and/or
 10+// modify it under the terms of the GNU General Public License as
 11+// published by the Free Software Foundation, either version 2 of the
 12+// License, or (at your option) any later version.
 13+//
 14+// emBIOS is distributed in the hope that it will be useful,
 15+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 16+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 17+// See the GNU General Public License for more details.
 18+//
 19+// You should have received a copy of the GNU General Public License along
 20+// with emBIOS. If not, see <http://www.gnu.org/licenses/>.
 21+//
 22+//
 23+
 24+
 25+#ifndef __VERSION_H__
 26+#define __VERSION_H__
 27+
 28+
 29+#define VERSION "0.0.1pre"
 30+#define VERSION_MAJOR 0
 31+#define VERSION_MINOR 0
 32+#define VERSION_PATCH 1
 33+#define VERSION_SVN "$REVISION$"
 34+#define VERSION_SVN_INT $REVISIONINT$
 35+
 36+
 37+#endif
\ No newline at end of file
Index: libs/mkfat32/Makefile
@@ -0,0 +1,118 @@
 2+NAME := mkfat32
 3+COMPRESS := true
 4+
 5+EMCOREDIR ?= ../../emcore/trunk/
 6+
 7+ifeq ($(shell uname),WindowsNT)
 8+CCACHE :=
 9+else
 10+CCACHE := $(shell which ccache)
 11+endif
 12+
 13+CROSS ?= arm-elf-eabi-
 14+CC := $(CCACHE) $(CROSS)gcc
 15+AS := $(CROSS)as
 16+LD := $(CROSS)ld
 17+OBJCOPY := $(CROSS)objcopy
 18+ELF2ECA := $(CROSS)elf2emcoreapp
 19+
 20+CFLAGS += -Os -fno-pie -fno-stack-protector -fomit-frame-pointer -I. -I$(EMCOREDIR)/export -ffunction-sections -fdata-sections -mcpu=arm940t -DARM_ARCH=4
 21+LDFLAGS += "$(shell $(CC) -print-libgcc-file-name)" --emit-relocs --gc-sections
 22+
 23+preprocess = $(shell $(CC) $(PPCFLAGS) $(2) -E -P -x c $(1) | grep -v "^\#")
 24+preprocesspaths = $(shell $(CC) $(PPCFLAGS) $(2) -E -P -x c $(1) | grep -v "^\#" | sed -e "s:^..*:$(dir $(1))&:")
 25+
 26+REVISION := $(shell svnversion .)
 27+REVISIONINT := $(shell echo $(REVISION) | sed -e "s/[^0-9].*$$//")
 28+
 29+HELPERS := build/__emcore_armhelpers.o
 30+
 31+SRC := $(call preprocesspaths,SOURCES,-I. -I..)
 32+OBJ := $(SRC:%.c=build/%.o)
 33+OBJ := $(OBJ:%.S=build/%.o) $(HELPERS)
 34+
 35+all: $(NAME)
 36+
 37+-include $(OBJ:%=%.dep)
 38+
 39+$(NAME): build/$(NAME).emcorelib
 40+
 41+build/$(NAME).emcorelib: build/$(NAME).elf
 42+ @echo [EMCLIB] $<
 43+ifeq ($(COMPRESS),true)
 44+ @$(ELF2ECA) -l -z -s 0 -o $@ $^
 45+else
 46+ @$(ELF2ECA) -l -s 0 -o $@ $^
 47+endif
 48+
 49+build/$(NAME).elf: ls.x $(OBJ)
 50+ @echo [LD] $@
 51+ @$(LD) $(LDFLAGS) -o $@ -T ls.x $(OBJ)
 52+
 53+build/%.o: %.c build/version.h
 54+ @echo [CC] $<
 55+ifeq ($(shell uname),WindowsNT)
 56+ @-if not exist $(subst /,\,$(dir $@)) md $(subst /,\,$(dir $@))
 57+else
 58+ @-mkdir -p $(dir $@)
 59+endif
 60+ @$(CC) -c $(CFLAGS) -o $@ $<
 61+ @$(CC) -MM $(CFLAGS) $< > $@.dep.tmp
 62+ @sed -e "s|.*:|$@:|" < $@.dep.tmp > $@.dep
 63+ifeq ($(shell uname),WindowsNT)
 64+ @sed -e "s/.*://" -e "s/\\$$//" < $@.dep.tmp | fmt -1 | sed -e "s/^ *//" -e "s/$$/:/" >> $@.dep
 65+else
 66+ @sed -e 's/.*://' -e 's/\\$$//' < $@.dep.tmp | fmt -1 | sed -e 's/^ *//' -e 's/$$/:/' >> $@.dep
 67+endif
 68+ @rm -f $@.dep.tmp
 69+
 70+build/%.o: %.S build/version.h
 71+ @echo [CC] $<
 72+ifeq ($(shell uname),WindowsNT)
 73+ @-if not exist $(subst /,\,$(dir $@)) md $(subst /,\,$(dir $@))
 74+else
 75+ @-mkdir -p $(dir $@)
 76+endif
 77+ @$(CC) -c $(CFLAGS) -o $@ $<
 78+ @$(CC) -MM $(CFLAGS) $< > $@.dep.tmp
 79+ @sed -e "s|.*:|$@:|" < $@.dep.tmp > $@.dep
 80+ifeq ($(shell uname),WindowsNT)
 81+ @sed -e "s/.*://" -e "s/\\$$//" < $@.dep.tmp | fmt -1 | sed -e "s/^ *//" -e "s/$$/:/" >> $@.dep
 82+else
 83+ @sed -e 's/.*://' -e 's/\\$$//' < $@.dep.tmp | fmt -1 | sed -e 's/^ *//' -e 's/$$/:/' >> $@.dep
 84+endif
 85+ @rm -f $@.dep.tmp
 86+
 87+build/__emcore_%.o: $(EMCOREDIR)/export/%.c
 88+ @echo [CC] $<
 89+ifeq ($(shell uname),WindowsNT)
 90+ @-if not exist $(subst /,\,$(dir $@)) md $(subst /,\,$(dir $@))
 91+else
 92+ @-mkdir -p $(dir $@)
 93+endif
 94+ @$(CC) -c $(CFLAGS) -o $@ $<
 95+
 96+build/__emcore_%.o: $(EMCOREDIR)/export/%.S
 97+ @echo [CC] $<
 98+ifeq ($(shell uname),WindowsNT)
 99+ @-if not exist $(subst /,\,$(dir $@)) md $(subst /,\,$(dir $@))
 100+else
 101+ @-mkdir -p $(dir $@)
 102+endif
 103+ @$(CC) -c $(CFLAGS) -o $@ $<
 104+
 105+build/version.h: version.h .svn/entries build
 106+ @echo [PP] $<
 107+ifeq ($(shell uname),WindowsNT)
 108+ @sed -e "s/\$$REVISION\$$/$(REVISION)/" -e "s/\$$REVISIONINT\$$/$(REVISIONINT)/" < $< > $@
 109+else
 110+ @sed -e 's/\$$REVISION\$$/$(REVISION)/' -e 's/\$$REVISIONINT\$$/$(REVISIONINT)/' < $< > $@
 111+endif
 112+
 113+build:
 114+ @mkdir $@
 115+
 116+clean:
 117+ rm -rf build
 118+
 119+.PHONY: all clean $(NAME)
Index: libs/mkfat32
Property changes on: libs/mkfat32
___________________________________________________________________
Added: svn:ignore
## -0,0 +1 ##
 120+build