diff options
Diffstat (limited to 'cpu/mpc83xx/cpu_init.c')
| -rw-r--r-- | cpu/mpc83xx/cpu_init.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/cpu/mpc83xx/cpu_init.c b/cpu/mpc83xx/cpu_init.c index 6ed0992c0..999fe7196 100644 --- a/cpu/mpc83xx/cpu_init.c +++ b/cpu/mpc83xx/cpu_init.c @@ -46,6 +46,37 @@ void cpu_init_f (volatile immap_t * im) /* Clear initial global data */ memset ((void *) gd, 0, sizeof (gd_t)); + /* system performance tweaking */ + +#ifdef CFG_ACR_PIPE_DEP + /* Arbiter pipeline depth */ + im->arbiter.acr = (im->arbiter.acr & ~ACR_PIPE_DEP) | (3 << ACR_PIPE_DEP_SHIFT); +#endif + +#ifdef CFG_SPCR_TSEC1EP + /* TSEC1 Emergency priority */ + im->sysconf.spcr = (im->sysconf.spcr & ~SPCR_TSEC1EP) | (3 << SPCR_TSEC1EP_SHIFT); +#endif + +#ifdef CFG_SPCR_TSEC2EP + /* TSEC2 Emergency priority */ + im->sysconf.spcr = (im->sysconf.spcr & ~SPCR_TSEC2EP) | (3 << SPCR_TSEC2EP_SHIFT); +#endif + +#ifdef CFG_SCCR_TSEC1CM + /* TSEC1 clock mode */ + im->clk.sccr = (im->clk.sccr & ~SCCR_TSEC1CM) | (1 << SCCR_TSEC1CM_SHIFT); +#endif +#ifdef CFG_SCCR_TSEC2CM + /* TSEC2 & I2C1 clock mode */ + im->clk.sccr = (im->clk.sccr & ~SCCR_TSEC2CM) | (1 << SCCR_TSEC2CM_SHIFT); +#endif + +#ifdef CFG_ACR_RPTCNT + /* Arbiter repeat count */ + im->arbiter.acr = ((im->arbiter.acr & ~(ACR_RPTCNT)) | (3 << ACR_RPTCNT_SHIFT)); +#endif + /* RSR - Reset Status Register - clear all status (4.6.1.3) */ gd->reset_status = im->reset.rsr; im->reset.rsr = ~(RSR_RES); |