Hi all,
I run across an issue when startup the MPC8536DS board by using
the latest git tree. The system hanged when initialized the DDR.
U-Boot 2009.08-00197-g15fba32 (Sep 17 2009 - 18:15:50)
CPU: 8536E, Version: 1.1, (0x803f0091)
Core: E500, Version: 3.0, (0x80210030)
Clock Configuration:
CPU0:1499.985 MHz,
CCB:499.995 MHz,
DDR:333.330 MHz (666.660 MT/s data rate) (Asynchronous),
LBC:31.250 MHz
L1: D-cache 32 kB enabled
I-cache 32 kB enabled
Board: MPC8536DS Sys ID: 0x15, Sys Ver: 0x10, FPGA Ver: 0x13, vBank: 0
I2C: ready
DRAM: Initializing....ERROR
2 GB left unmapped
DDR:
I traced the code and found the variable law_sz_enc got an
error value when call __ilog2_u64 in the function set_ddr_laws.
The inline function __ilog2_u64 will call fls inline function
finally, but the fls is defined as a variable by the commit
52d61227b66d4099b39c8309ab37cb67ee09a405 in the platform specific
bitops.h file.
include/asm-ppc/bitops.h:
static __inline__ int fls(unsigned int x)
{
return __ilog2(x) + 1;
}
#define fls
So when called fls, which one will be used?
>From the experiments, I got the latter called, but I don't find
the root reason, any clues?
Thanks,
Mingkai
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