Here is a patch to fix the calculation of CPU clock speed on the MPC8245. The PLL ratio table in the current code is just for the 8240.
This is my first patch submission. The patch is in at attachment. If that's the wrong way to include the patch (maybe you want it inline), let me know and I can resubmit.
--- u-boot-1.2.0/cpu/mpc824x/speed.c 2007-02-06 17:56:29.000000000 -0800 +++ u-boot-1.2.0.patch/cpu/mpc824x/speed.c 2007-02-06 17:59:18.000000000 -0800 @@ -98,12 +98,19 @@ ulong get_bus_freq (ulong dummy) /* This gives the Memory to CPU Core multiplier times 10 */ /* The index is the value of PLLRATIO in HID1 */ /* This is documented in the MPC8240 Hardware Specs */ -/* This is not documented for MPC8245 ? FIXME */ +/* MPC8245 data from hardware spec, Rev 9, 1/2007 */ short pllratio_to_factor[] = { +#if defined(CONFIG_MPC8240) 0, 0, 0, 10, 20, 20, 25, 45, 30, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 45, 30, 0, 40, 0, 0, 0, 35, 0, +#elif defined(CONFIG_MPC8245) + 25, 30, 45, 20, 20, 0, 30, 35, + 30, 20, 45, 30, 25, 35, 30, 35, + 20, 25, 20, 30, 35, 40, 40, 20, + 30, 25, 40, 30, 30, 25, 35, 0, +#endif };
/* compute the CPU and memory bus clock frequencies */
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