Hi,
I'm trying to port linux into Roger-Board, but i don't know why linux not
booting on this board.would somebody help me with some hints and tips about
porting ?.
I'm using linux 2.4.17 kernel with patch 2.4.17-rmk3. The Roger-board have
following feature:
SA1110 cpu stepping 4
64 MB SDRAM samsung
32 MB StrataFlash memory (2 * 28F128J3A,with 16 bit data width, on modules
with one flash memory bank)
JTag Interface
LCD Hitachi
3 Serial Ports
....
I have port the bootloader blob-2.0.5-pre2 on the Roger and it works fein!(i
think), it can download kernel and ramdisk images, than write to flash
memory. when i give the kommand "boot", i see following messages on the
console and the system hang up:
Starting kernel ...
Uncompressing Linux........................... done, booting the kernel.
I have copy the file nanoengine.c to roger.c and modified the code as
follow:
static void __init
fixup_roger(struct machine_desc *desc, struct param_struct *params,
char **cmdline, struct meminfo *mi)
{
SET_BANK( 0, 0xc0000000, 32*1024*1024 );
SET_BANK( 1, 0xc8000000, 32*1024*1024 );
mi->nr_banks = 2;
ROOT_DEV = MKDEV(RAMDISK_MAJOR,0);
setup_ramdisk( 1, 0, 0, 8192 );
setup_initrd( __phys_to_virt(0xc0800000), 4*1024*1024 );
//setup_initrd(0xc0800000, 4*1024*1024 );
/* Get command line parameters passed from the loader (if any) */
if( *((char*)0xc0000100) )
*cmdline = ((char *)0xc0000100);
}
static struct map_desc roger_io_desc[] __initdata = {
/* virtual physical length domain r w c b */
{ 0xe8000000, 0x00000000, 0x02000000, DOMAIN_IO, 1, 1, 0, 0 }, /* Flash
bank 0 */
LAST_DESC
};
static void __init roger_map_io(void)
{
sa1100_map_io();
iotable_init(roger_io_desc);
sa1100_register_uart(0, 1);
sa1100_register_uart(1, 2);
sa1100_register_uart(2, 3);
Ser1SDCR0 |= SDCR0_UART;
/* disable IRDA -- UART2 is used as a normal serial port */
Ser2UTCR4=0;
Ser2HSCR0 = 0;
}
MACHINE_START(ROGER, "Roger SD")
BOOT_MEM(0xc0000000, 0x80000000, 0xf8000000)
FIXUP(fixup_roger)
MAPIO(roger_map_io)
INITIRQ(sa1100_init_irq)
MACHINE_END
Memory map on Roger:
0x0000 0000 static bank select 0
0x0800 0000 module flash bank1
0x1000 0000 static bank select 2
0x8000 0000 peripheral control module registers
0x9000 0000 system control module registers
0xc000 0000 module SDRAM bank
who can i configured true memory map and memory timing ?
any ideas?
Thanks,
Anoulak
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