Dear Reinhard Meyer,
In message 4CDF15BB.1090107@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