nihilazo
/
rockbox
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Use the asm optimised UCL decompressor for the flash bootloader as well. Verified working on Player, Recorder v1, Ondio SP and Ondio FM. 

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@18928 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2008-10-30 00:17:45 +00:00
parent c91d7873c7
commit e13e318c37
5 changed files with 10 additions and 73 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
flash/bootloader/Makefile
View File

@ -46,7 +46,7 @@ endif
SRC := $(wildcard *.c)
OBJS := $(SRC:%.c=$(OBJDIR)/%.o)
OBJS := $(SRC:%.c=$(OBJDIR)/%.o) $(OBJDIR)/sh_nrv2e_d8.o
ifdef NO_ROM
LINKFILE = $(OBJDIR)/no_rom.lds
@ -64,9 +64,12 @@ ifndef NO_ROM
$(TOOLSDIR)/scramble $(OBJDIR)/$(TARGET).bin $(OBJDIR)/$(TARGET).ajz
endif
$(OBJDIR)/$(TARGET).elf : $(OBJS)
$(CC) -Os -nostdlib -o $(OBJDIR)/$(TARGET).elf -L$(OBJDIR) -T$(LINKFILE) -Wl,-Map,$(OBJDIR)/$(TARGET).map
$(OBJDIR)/$(TARGET).elf : $(OBJS)
$(CC) -Os -nostdlib -o $@ $(OBJS) -T$(LINKFILE) -Wl,-Map,$(OBJDIR)/$(TARGET).map
# cross-reference, saves code duplication
$(OBJDIR)/sh_nrv2e_d8.o : ../../firmware/decompressor/sh_nrv2e_d8.S
$(CC) $(CFLAGS) -c $< -o $@
clean:
-rm -f \

69
flash/bootloader/bootloader.c
View File

@ -29,7 +29,6 @@
// prototypes
static void PlatformInit(void);
static int ucl_nrv2e_decompress_8(const UINT8 *src, UINT8 *dst, UINT32* dst_len);
static void DecompressStart(tImage* pImage);
#ifdef USE_ADC
static int ReadADC(int channel);
@ -41,7 +40,7 @@ static void SetLed(BOOL bOn);
static void UartInit(void);
static UINT8 UartRead(void);
static void UartWrite(UINT8 byte);
static void MiniMon(void);
static void MiniMon(void);
#ifdef NO_ROM
@ -188,72 +187,6 @@ static void PlatformInit(void)
}
/* Thinned out version of the UCL 2e decompression sourcecode
* Original (C) Markus F.X.J Oberhumer under GNU GPL license */
#define GETBIT(bb, src, ilen) \
(((bb = bb & 0x7f ? bb*2 : ((unsigned)src[ilen++]*2+1)) >> 8) & 1)
static int ucl_nrv2e_decompress_8(
const UINT8 *src, UINT8 *dst, UINT32* dst_len)
{
UINT32 bb = 0;
unsigned ilen = 0, olen = 0, last_m_off = 1;
for (;;)
{
unsigned m_off, m_len;
while (GETBIT(bb,src,ilen))
{
dst[olen++] = src[ilen++];
}
m_off = 1;
for (;;)
{
m_off = m_off*2 + GETBIT(bb,src,ilen);
if (GETBIT(bb,src,ilen)) break;
m_off = (m_off-1)*2 + GETBIT(bb,src,ilen);
}
if (m_off == 2)
{
m_off = last_m_off;
m_len = GETBIT(bb,src,ilen);
}
else
{
m_off = (m_off-3)*256 + src[ilen++];
if (m_off == 0xffffffff)
break;
m_len = (m_off ^ 0xffffffff) & 1;
m_off >>= 1;
last_m_off = ++m_off;
}
if (m_len)
m_len = 1 + GETBIT(bb,src,ilen);
else if (GETBIT(bb,src,ilen))
m_len = 3 + GETBIT(bb,src,ilen);
else
{
m_len++;
do {
m_len = m_len*2 + GETBIT(bb,src,ilen);
} while (!GETBIT(bb,src,ilen));
m_len += 3;
}
m_len += (m_off > 0x500);
{
const UINT8 *m_pos;
m_pos = dst + olen - m_off;
dst[olen++] = *m_pos++;
do dst[olen++] = *m_pos++; while (--m_len > 0);
}
}
*dst_len = olen;
return ilen;
}
/* move the image into place and start it */
static void DecompressStart(tImage* pImage)
{

1
flash/bootloader/bootloader.h
View File

@ -77,6 +77,7 @@ typedef struct
#define FW_VERSION *(unsigned short*)(FLASH_BASE + 0xFE) // firmware version
// prototypes
int ucl_nrv2e_decompress_8(const UINT8 *src, UINT8 *dst, UINT32* dst_len);
void _main(void) __attribute__ ((section (".startup")));
int main(void);

2
flash/bootloader/bootloader.lds
View File

@ -1,5 +1,4 @@
OUTPUT_FORMAT(elf32-sh)
INPUT(bootloader.o)
MEMORY
{
@ -19,6 +18,7 @@ SECTIONS
.text :
{
*(.text)
*(.icode)
. = ALIGN(0x4);
} > IRAM

2
flash/bootloader/no_rom.lds
View File

@ -2,7 +2,6 @@
where the flash ROM is mirrored to address zero */
OUTPUT_FORMAT(elf32-sh)
INPUT(bootloader.o)
MEMORY
{
@ -29,6 +28,7 @@ SECTIONS
{
_begin_text = .;
*(.text)
*(.icode)
. = ALIGN(0x4);
_end_text = .;
} > IRAM