Hi All!
On our MPC8260ADS board the 2.4.18 kernel starts fine from PPCBoot, but
after
"Warning: real time clock seems stuck!"
message, (which seems true) stops on
"Calibrating delay loop... "
message. (which proves the previous assumption)
Where to find the initial settings of the 8260 timer?
In the PPCBoot or in the kernel?
Best Regards
Ludwig
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
I had this problem before. Make sure the frequency members of the bd_t
structure are in Hz, not MHz.
I made a change in M8260Setup.c:
void __init
platform_init(unsigned long r3, unsigned long r4, unsigned long r5,
unsigned long r6, unsigned long r7)
{
/* PEM : added */
bd_t *binfo;
binfo = (bd_t *)__res;
if ( r3 )
memcpy( (void *)__res,(void *)(r3+KERNELBASE), sizeof(bd_t) );
/* PEM : frequencies reported by ppcboot are in MHz, not Hz */
/* Linux makes calculations assuming they are in Hz */
binfo->bi_intfreq *= 1000000L; /* Internal Freq, in MHz */
binfo->bi_busfreq *= 1000000L; /* Bus Freq, in MHz */
binfo->bi_cpmfreq *= 1000000L; /* CPM_CLK Freq, in MHz */
binfo->bi_brgfreq *= 1000000L; /* BRG_CLK Freq, in MHz */
binfo->bi_sccfreq *= 1000000L; /* SCC_CLK Freq, in MHz */
binfo->bi_vco *= 1000000L; /* VCO Out from PLL, in MHz */
Not sure if this is the correct place to do this, but it worked for me. I
suppose you could also rebuild ppcboot, but I didn't feel like doing this.
Pete--- M�sz�ros_Lajos <ludwigm@siemens.hu> wrote:
Hi All!
On our MPC8260ADS board the 2.4.18 kernel starts fine from PPCBoot, but
after
"Warning: real time clock seems stuck!"
message, (which seems true) stops on
"Calibrating delay loop... "
message. (which proves the previous assumption)
Where to find the initial settings of the 8260 timer?
In the PPCBoot or in the kernel?
Best Regards
Ludwig
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/