diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/amd/rumba/auto.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/src/mainboard/amd/rumba/auto.c b/src/mainboard/amd/rumba/auto.c index b15937126b..08fe8ed6ca 100644 --- a/src/mainboard/amd/rumba/auto.c +++ b/src/mainboard/amd/rumba/auto.c @@ -60,8 +60,36 @@ static void msr_init(void) } -static pll_reset(void) +static void pll_reset(void) { + msr_t msr; + + msr = rdmsr(0x4c000014); + print_debug("CGLP_SYS_RSTPLL "); + print_debug_hex32(msr.hi); + print_debug(":"); + print_debug_hex32(msr.lo); + print_debug("\n\r"); + + if ((msr.lo >> 26) & 0x3F) { + print_debug("reboot from BIOS reset\n\r"); + return; + } + print_debug("prgramming PLL\n\r"); + + msr.hi = 0x00000019; + msr.lo = 0x06de0378; + wrmsr(0x4c000014, msr); + msr.lo |= ((0xde << 16) | (1 << 26)); + wrmsr(0x4c000014, msr); + + print_debug("Reset PLL\n\r"); + + msr.lo |= ((1<<14) |(1<<13) | (1<<0)); + wrmsr(0x4c000014,msr); + + print_debug("should not be here\n\r"); + } static void main(unsigned long bist) @@ -76,7 +104,9 @@ static void main(unsigned long bist) uart_init(); console_init(); - print_err("hi\n"); + print_err("hi\n\r"); + + pll_reset(); /* Halt if there was a built in self test failure */ //report_bist_failure(bist); |