Dear Reinhard Meyer,
In message <4cdf15bb.1090...@emk-elektronik.de> you wrote:
>
> >> Correct, that's why its even now copied over to storage in SDRAM...
> >> (at least on ARM:
> >> debug ("relocation Offset is: %08lx\n", gd->reloc_off);
> >> memcpy (id, (void *)gd, sizeof (gd_t));
> >>
> >> relocate_code (addr_sp, id, addr);
> >> )
> >
> > At this time board_early_init_f() has terminated long ago, i. e. the
> > data is not available any more.
>
> Above code is *IN* board_early_init_f !
That's totally broken, then.
See init_sequence[] in "arch/arm/lib/board.c":
239 init_fnc_t *init_sequence[] = {
240 #if defined(CONFIG_ARCH_CPU_INIT)
241 arch_cpu_init, /* basic arch cpu dependent setup */
242 #endif
243 #if defined(CONFIG_BOARD_EARLY_INIT_F)
244 board_early_init_f,
245 #endif
246 timer_init, /* initialize timer */
247 #ifdef CONFIG_FSL_ESDHC
248 get_clocks,
249 #endif
250 env_init, /* initialize environment */
251 init_baudrate, /* initialze baudrate settings */
252 serial_init, /* serial communications setup */
253 console_init_f, /* stage 1 init of console */
254 display_banner, /* say that we are here */
255 #if defined(CONFIG_DISPLAY_CPUINFO)
256 print_cpuinfo, /* display cpu info (and speed) */
257 #endif
258 #if defined(CONFIG_DISPLAY_BOARDINFO)
259 checkboard, /* display board info */
260 #endif
261 #if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
262 init_func_i2c,
263 #endif
264 dram_init, /* configure available RAM banks */
265 #if defined(CONFIG_CMD_PCI) || defined (CONFIG_PCI)
266 arm_pci_init,
267 #endif
268 NULL,
269 };
board_early_init_f() [in line 244] runs a long, long time before the
SDRAM has been tested and initialized, which happens in dram_init()
[in line 264].
You cannot and must not touch SDRAM in board_early_init_f(). And even
more, you must not at all run relocate_code() there!
Best regards,
Wolfgang Denk
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: w...@denx.de
Fools ignore complexity. Pragmatists suffer it. Some can avoid it.
Geniuses remove it.
- Perlis's Programming Proverb #58, SIGPLAN Notices, Sept. 1982
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